Self-cleaning abrasive belt

Abstract

This utility model relates to the field of abrasive belt technology and discloses a self-cleaning abrasive belt, comprising: a nylon base used as the belt substrate; a cotton base used as the intermediate layer substrate of the belt, the cotton base being fixedly connected to the sidewall of the nylon base; sandpaper used for polishing, the surface of the sandpaper being filled with loosely packed abrasive, the sidewall of the sandpaper being fixedly connected to the outer wall of the cotton base; and an adhesive applied between the nylon base, cotton base, and sandpaper, the adhesive being used to fix and connect the cloth base and the polishing layer, the sandpaper having a trapezoidal groove inside. In this utility model, the self-cleaning abrasive belt effectively solves the problem of abrasive chip accumulation and clogging during traditional abrasive belt grinding through the design of the trapezoidal groove connecting to the chip removal hole. The trapezoidal groove on the surface of the sandpaper guides the abrasive chips to gather towards the chip removal hole, and together with the chip removal hole penetrating the nylon base, cotton base, and sandpaper, the abrasive chips are quickly discharged.

Description

Technical Field

[0001] This utility model relates to the field of abrasive belt technology, and in particular to a self-cleaning abrasive belt. Background Technology

[0002] Abrasive belts, as key tools for surface finishing, are widely used in grinding and polishing processes in metal, wood, and composite materials. With the increasing demands for processing efficiency and quality in modern manufacturing, the problem of abrasive chip retention during long-term continuous operation of traditional belts has become increasingly prominent. This is especially true in high-load precision machining scenarios, where abrasive clogging can lead to a sharp decline in cutting performance. To address this technical challenge, self-cleaning abrasive belts have emerged. Through an innovative chip removal structure design, they achieve autonomous chip removal during the grinding process while maintaining the basic grinding function of the belt. The development of these products not only responds to the industrial sector's demand for automated processing equipment but also aligns with the technological development trend of reducing manual intervention and material waste in green manufacturing, providing a new solution for the continuous optimization of grinding processes.

[0003] Existing abrasive belts typically employ a multi-layered composite structure, consisting of a substrate layer, an adhesive layer, and an abrasive grain layer. The substrate is often made of cotton cloth, polyester fiber, or paper-based materials, with abrasive grains such as alumina and silicon carbide fixed to the surface using a resin adhesive. Their working principle relies on the scraping action of the abrasive grains' micro-cutting edges on the workpiece surface. The debris generated during grinding is removed by the centrifugal force generated by the belt's rotation or by auxiliary airflow. Some improved products enhance chip removal by incorporating wavy patterns or intermittent grooves on the substrate surface, but these structures are mostly limited to shallow designs within a single material layer. Furthermore, current technologies generally rely on increasing the belt speed or adding external dust collection devices to alleviate chip accumulation, without fundamentally altering the belt's own chip removal mechanism.

[0004] The core problem facing current belt abrasive technology is that the fine chips generated during grinding easily form a dense accumulation layer between the abrasive grains. Due to the lack of a systematic design in the chip removal channels of traditional belts, grinding chips gradually fill the chip-holding space between the abrasive grains, forming a hardened layer that covers the cutting edge, leading to a continuous decrease in the effective grinding area. This blockage not only causes fluctuations in grinding force and sudden temperature rises, resulting in burns or scratches on the workpiece surface, but also forces frequent equipment shutdowns for manual cleaning, severely restricting the continuous operation efficiency of automated production lines. This problem worsens exponentially, especially when precision grinding viscous materials (such as aluminum alloys and resin-based composites), becoming a key bottleneck restricting machining quality and tool life. Therefore, a self-cleaning abrasive belt is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a self-cleaning abrasive belt, which aims to improve the problem in the prior art that fine debris generated during grinding easily forms a dense accumulation layer between abrasive grains.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A self-cleaning abrasive belt, comprising:

[0008] Nylon base, the nylon base being used as abrasive belt substrate;

[0009] Cotton base, which is used as the substrate for the intermediate layer of the abrasive belt, and the cotton base is fixedly connected to the sidewall of the nylon base;

[0010] Sandpaper, the sandpaper being used for sanding and polishing materials, the surface of the sandpaper being filled with loosely packed sand, and the sidewalls of the sandpaper being fixedly connected to the outer wall of the cotton base;

[0011] An adhesive is applied between the nylon base, cotton base, and sandpaper. The adhesive is used to fix and connect the cloth base and the sanding layer. The sandpaper has a trapezoidal groove inside. The nylon base, cotton base, and sandpaper all have chip removal holes inside. The chip removal holes penetrate the interior of the nylon base, cotton base, and sandpaper. The trapezoidal groove is connected to the chip removal holes. The outer wall of the nylon base has a trapezoidal groove.

[0012] As a further description of the above technical solution:

[0013] The nylon base is woven from nylon filaments and has a plain or twill weave structure.

[0014] As a further description of the above technical solution:

[0015] The cotton base is a cotton fabric, and the cotton base is completely bonded and fixed to one side surface of the nylon base by the adhesive.

[0016] As a further description of the above technical solution:

[0017] The sandpaper contains corundum or silicon carbide abrasives, and the abrasives are evenly distributed on the surface of the sandpaper.

[0018] As a further description of the above technical solution:

[0019] The trapezoidal groove is formed on the side of the sandpaper away from the cotton base, and the trapezoidal groove extends along the length or width of the sandpaper.

[0020] As a further description of the above technical solution:

[0021] The chip removal holes are regularly distributed on the nylon base, cotton base, and sandpaper, and the axis of the chip removal holes is perpendicular to the surface of the nylon base.

[0022] This utility model has the following beneficial effects:

[0023] This self-cleaning abrasive belt effectively solves the problem of slag buildup and clogging during traditional belt grinding through its trapezoidal groove and chip removal hole design. The trapezoidal groove on the sandpaper surface guides the slag to gather towards the chip removal hole, which, together with the chip removal hole penetrating the nylon base, cotton base, and sandpaper, enables rapid slag removal, preventing the abrasive grains from being covered and losing their cutting ability. The composite substrate structure of nylon and cotton base enhances the overall strength and flexibility of the belt, and the uniform distribution of loosely packed abrasive further reduces the risk of slag adhesion. This design reduces production interruptions caused by frequent shutdowns for belt cleaning, extends the belt's service life, and at the same time, smooth chip removal reduces grinding heat accumulation, improves the surface finish of the workpiece, and enhances the belt's applicability and stability in grinding various materials such as metal and wood. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a self-cleaning abrasive belt proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the sandpaper structure of a self-cleaning abrasive belt proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the exploded structure of a cotton-based self-cleaning abrasive belt proposed in this utility model.

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of a nylon-based structure for a self-cleaning abrasive belt proposed in this utility model;

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Nylon base; 2. Cotton base; 3. Sandpaper; 4. Trapezoidal groove; 5. Anti-slip groove; 6. Adhesive; 7. Chip removal hole. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 - Figure 6This utility model provides an embodiment of a self-cleaning abrasive belt, comprising: a nylon base 1, which serves as the core load-bearing layer to provide the strong and tough substrate required for the abrasive belt. The nylon base 1 is precision-woven from high-strength nylon filaments, forming a stable plain or twill weave structure, giving the abrasive belt excellent overall tensile strength and durability; a cotton base 2, which serves as a key intermediate substrate to enhance the abrasive belt's cushioning and vibration absorption performance and flexibility. The cotton base 2 is firmly and completely bonded to the sidewall surface of the nylon base 1 by an adhesive 6, forming a composite substrate structure, significantly improving the overall adaptability and fatigue resistance of the abrasive belt; and sandpaper 3, which serves as a functional layer directly involved in grinding for polishing the workpiece. The sandpaper 3 is tightly bonded to the outer wall of the cotton base 2 by an adhesive 6. Its surface is carefully filled with specially treated loosely packed abrasive, which is a high-hardness corundum or silicon carbide abrasive, and is evenly distributed in a scientifically controlled manner to effectively reduce the risk of abrasive shavings adhesion. The high-performance adhesive 6 is evenly applied to the interface between the nylon base 1, cotton base 2, and sandpaper 3. Its core function is to provide strong and reliable adhesion, ensuring a stable and durable bond between the cloth base layer and the abrasive layer. The sandpaper 3 has precisely cut trapezoidal grooves 4 with a specific geometric shape inside. These grooves are key abrasive shavings guiding channels, located away from the working surface of the sandpaper 3 from the cotton base 2. On the side surface, and regularly extending along the length or width of the sandpaper 3, crucial chip removal holes 7 are perforated throughout the nylon base 1, cotton base 2, and sandpaper 3. These chip removal holes 7 are regularly distributed on the three layers of material, with their axes strictly perpendicular to the surface of the nylon base 1, forming a through-type chip removal channel from the grinding surface to the bottom of the substrate. The trapezoidal groove 4 and the chip removal holes 7 are structurally designed to be interconnected. The trapezoidal groove 4 efficiently guides and gathers the grinding chips generated during grinding to the inlet of the chip removal hole 7. The outer wall of the nylon base 1 also has anti-slip grooves 5, which further assist in the flow and discharge of grinding chips. The nylon base 1 is made of high-modulus nylon filaments, forming a dense woven structure with plain or twill weave, providing a high-quality sanding belt. Provides a solid framework support. The cotton base 2 is made of natural cotton fabric and is fully bonded and fixed to one side of the nylon base 1 through the adhesive 6, effectively absorbing grinding impact and transmitting flexibility. The sandpaper 3 uses corundum or silicon carbide high-hardness abrasives. Its uniform distribution pattern on the surface of the sandpaper 3 ensures the stability and consistency of the grinding force. The trapezoidal groove 4 is precisely opened on the side of the sandpaper 3 away from the cotton base 2 where the grinding operation is performed, and is optimized and extended along the length or width of the sandpaper 3. The chip removal holes 7 are distributed on the three key materials of nylon base 1, cotton base 2 and sandpaper 3 according to the preset rules. Their axes are strictly perpendicular to the surface of nylon base 1, ensuring the shortest and most efficient chip removal path.

[0034] Working principle: When the self-cleaning abrasive belt is working, the entire belt rotates with the grinding equipment. The loosely distributed abrasive on the surface of the abrasive paper 3 comes into contact with the material to be processed, generating a grinding effect. The abrasive chips are driven away from the workpiece surface by the grinding force. Because the loosely distributed abrasive is evenly distributed on the surface of the abrasive paper 3, the abrasive chips do not easily accumulate in large quantities between the abrasive grains. Some of the abrasive chips enter the trapezoidal groove 4 opened on the surface under the movement of the abrasive paper 3. The trapezoidal groove 4 extends along the length or width of the abrasive paper 3, forming a directional channel. Under the inertia of the continuous movement of the belt, the abrasive chips move along the trapezoidal groove 4 towards the chip discharge hole 7. When the abrasive chips reach the trapezoidal groove 7, the chips are discharged into the chip discharge hole 7. When the groove 4 connects with the chip removal hole 7, the chip removal hole 7, driven by gravity and airflow, enters the sandpaper 3, cotton base 2 and nylon base 1. The chip removal hole 7 is regularly distributed and its axis is perpendicular to the surface of the nylon base 1. The abrasive chips move in the chip removal hole 7 in a direction perpendicular to the surface of the abrasive belt, and finally pass through the nylon base 1 and are discharged from the abrasive belt. At the same time, the anti-slip groove 5 on the outer wall of the nylon base 1 can help to guide the abrasive chips discharged from the chip removal hole 7 and prevent them from accumulating on the back of the abrasive belt. The adhesive 6 firmly connects the nylon base 1, cotton base 2 and sandpaper 3 to ensure that each layer moves synchronously during movement and ensures that the chip removal channel is stable and unobstructed.

Claims

1. A self-cleaning abrasive belt, characterized in that, include: Nylon base (1), said nylon base (1) is used as a sanding belt substrate; Cotton base (2), the cotton base (2) is used as the substrate of the intermediate layer of the abrasive belt, and the cotton base (2) is fixedly connected to the side wall of the nylon base (1); Sandpaper (3), the sandpaper (3) is used to polish materials, the surface of the sandpaper (3) is filled with loose sand, and the sidewall of the sandpaper (3) is fixedly connected to the outer wall of the cotton base (2); Adhesive (6) is applied between the nylon base (1), cotton base (2) and sandpaper (3). The adhesive (6) is used to fix and connect the cloth base and the sanding layer. The sandpaper (3) has a trapezoidal groove (4) inside. The nylon base (1), cotton base (2) and sandpaper (3) all have chip removal holes (7) inside. The chip removal holes (7) penetrate the inside of the nylon base (1), cotton base (2) and sandpaper (3). The trapezoidal groove (4) is connected to the chip removal hole (7). The outer wall of the nylon base (1) has an anti-slip groove (5).

2. The self-cleaning abrasive belt according to claim 1, characterized in that: The nylon base (1) is woven from nylon filaments and has a plain or twill weave structure.

3. The self-cleaning abrasive belt according to claim 1, characterized in that: The cotton base (2) is a cotton fabric, and the cotton base (2) is completely bonded and fixed to one side surface of the nylon base (1) by the adhesive (6).

4. The self-cleaning abrasive belt according to claim 1, characterized in that: The loosely planted abrasive of the sandpaper (3) is corundum or silicon carbide abrasive, and the loosely planted abrasive is evenly distributed on the surface of the sandpaper (3).

5. The self-cleaning abrasive belt according to claim 1, characterized in that: The trapezoidal groove (4) is formed on the side surface of the sandpaper (3) away from the cotton base (2), and the trapezoidal groove (4) extends along the length or width direction of the sandpaper (3).

6. The self-cleaning abrasive belt according to claim 1, characterized in that: The chip removal holes (7) are regularly distributed on the nylon base (1), cotton base (2) and sandpaper (3), and the axis of the chip removal holes (7) is perpendicular to the surface of the nylon base (1).

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