Grinding brush with brush wires arranged in tower shape

Abstract

The grinding brush comprises brush wire bundles evenly distributed on a brush support, the section of each brush wire bundle is trapezoidal, one end of each brush wire bundle is fixedly connected with the brush support, the peripheral brush wires incline towards the axis of the brush wire bundles to form a structure with a trapezoidal longitudinal section, namely a tower-shaped structure, and the ends of the brush wire bundles are gathered together. The supporting force of the brush wire bundle at the initial stage of use of the grinding brush is effectively improved, the brush wires at the root of the brush wire bundle are dispersed, so that the brush wire utilization rate is increased to 83% from 61%, the use cost of the grinding brush is effectively reduced, the brush wires are gradually shortened along with abrasion, and the brush wires are gradually dispersed; the defects that the brush wires are shortened, the dispersion effect of the brush wires is greatly reduced, and meanwhile the supporting force and the grinding force are increased are effectively overcome, gaps exist between the brush wires at the roots of the brush wires, cleaning and disinfection of the grinding brush are facilitated, the phenomena of brush wire lodging and wire breaking caused by mutual friction between the brush wires can be effectively reduced, and the service life of the grinding brush is prolonged. The problem that the brush wires on the end face are uneven in height can be solved by controlling the length of the brush wires, and brush wire waste caused by flat wires is avoided.

Description

Technical Field

[0001] The invention relates to an industrial abrasive brush, in particular to an abrasive brush with bristles arranged in a tower shape. Background Art

[0002] Currently, the main function of industrial abrasive brush products is to use the flexibility of their brush filaments to perform contoured elastic grinding on the workpiece surface. Its manufacturing process uses materials such as clips, tacks, metal wires (strips), silk threads, adhesives, or fixes the brush filaments by thermoplastic means. The abrasive brush products of the above processes basically have a structure in which the bundled brush filaments are fixed in the wire planting holes or wire planting grooves on the brush holder. The characteristic of this brush filament arrangement structure is that the brush filament bundles extend outward in parallel or radially along the wire planting holes, that is, the cross-section of the brush filament bundle at the working end is equal to or significantly larger than the cross-section of the brush filament bundle in the wire planting holes. After long-term use, this traditional brush filament bundle structure of abrasive brushes gradually exposes the following disadvantages:

[0003] 1. In grinding, polishing and other operations, the contour dispersion of the brush bundle and the uniform grinding force are the key to obtaining the consistency of the surface effect of the ground material. The abrasive brush with traditional structure brush bundle has very different performance and effect in the early stage of use compared with the later stage of use. This is because during the use of the abrasive brush, the brush filaments are longer in the early stage, and the dispersion of the brush bundle is the best, but the supporting force and grinding force are also the worst; during use, as the brush filaments are gradually shortened due to wear, the dispersion and profiling effect of the brush filaments gradually decreases, and at the same time, the supporting force and grinding force gradually increase; in this process, in order to obtain consistency in the surface effect of the grinded material, it is necessary to frequently stop the equipment to adjust the pressure and speed of the grinding head to balance the relationship between the brush filament profiling dispersion, supporting force and grinding force. Even so, the result is unsatisfactory; when the brush filaments are worn to a certain extent, the brush bundle no longer has dispersion performance, and its supporting force and grinding force basically reach the peak, forming uneven grinding marks on the surface of the grinded material, completely losing its profiling elastic grinding function and resulting in scrapping. At this time, there are still quite long brush filaments that cannot be fully utilized, resulting in increased use costs, material waste and environmental pollution.

[0004] 2. Traditional abrasive brushes with bundled filaments have loose ends and a compact base, and most of the bundle is secured in a blind hole. This makes it difficult to effectively remove small particles of dirt and even bacteria trapped between the filaments. For example, when a toothbrush reaches its replacement period, it's usually due to excessive bacterial counts, rather than physical issues like wear and tear or wire retraction. During use, the abrasive material and abrasive particles that fall off the filaments accumulate at the base of the bundle, directly affecting the surface finish of the abraded material and causing abnormal wear of the filaments.

[0005] 3. Due to the structural characteristics of the brush filament bundle being loose at the top and tight at the bottom, the stress of the brush filament is concentrated in the area where it is combined with the brush support during operation. When the brush filament moves at a high frequency, the brush filaments rub against each other violently. The wear of the brush filaments caused by friction gradually weakens their supporting force and even causes the filaments to break. This phenomenon is particularly serious for abrasive brushes used in industrial fields.

[0006] 4. Usually, bundled brush wires are made by folding a certain number of brush wires in half and then inserting them into the wire planting hole. The fixed depths of the brush wires in the same wire planting hole are different, resulting in uneven heights of the brush wire ends. It is necessary to add a flat wire process to cut the brush wires, which leads to waste of brush wire materials. Summary of the Invention

[0007] The present invention provides an abrasive brush with bristles arranged in a tower shape, so as to overcome the disadvantages of the prior art.

[0008] To achieve the purpose of the present invention, the abrasive brush in which the brush filaments are arranged in a tower shape, wherein the brush filament bundle is composed of an effective number of brush filaments, and it includes a brush filament bundle evenly distributed on the brush holder, characterized in that the longitudinal cross-section of the brush filament bundle is a trapezoidal structure, the diameter of the brush filament is 0.1 to 10 mm, the cross-section of the brush holder is circular, annular, elliptical, rectangular, trapezoidal, fan-shaped, triangular or polygonal, and one end of the brush filament bundle is fixedly connected to the brush holder.

[0009] The technical progress achieved by the present invention:

[0010] 1. Because the outer filaments of the brush bundle are inclined toward the axis of the brush bundle, forming a trapezoidal or tower-shaped arrangement structure in longitudinal section, the working end of the brush bundle, i.e., the top of the trapezoidal brush bundle, forms a cluster. Compared with columnar or radial brush bundle structures, the tower-shaped brush bundle of the present invention has a higher overall support force and grinding force in the early stage of grinding. Moreover, because the brush filaments are longer at this time, the dispersion performance of the brush filaments is not affected. During grinding, as the brush filaments gradually become shorter due to wear, the brush filaments begin to gradually disperse. At the same time, as the brush filaments gradually lose the support of adjacent brush filaments, their grinding force gradually decreases. This effectively improves and overcomes the disadvantages of traditional brush bundle structures, where the brush filaments become shorter, the brush filament dispersion effect is greatly reduced, and the support force and grinding force increase. It effectively improves the support force of the brush bundle in the early stage of use and the disadvantage of poor brush filament dispersion effect in the later stage of use. After self-testing and comparison with customer usage data, the number of times the equipment needs to be stopped to adjust has dropped from an average of 26 times to an average of 7 times, greatly improving production efficiency. By the time the abrasive brush is scrapped, the remaining brush wire length has been reduced from an average of 12 mm to less than 5 mm. The dispersion of the brush wires at the root of the brush wire bundle has increased the brush wire utilization rate from the original 61% to 83%, effectively improving the brush wire utilization rate and reducing the cost of using the abrasive brush.

[0011] 2. Due to the gradually dispersed filament bundle structure at the root of the brush filament bundle of the present invention, there are gaps between the brush filaments at the root of the brush filaments located in the stress area of ​​the brush support, which can effectively reduce the brush filaments falling over and breaking caused by friction between the brush filaments.

[0012] 3. The present invention can solve the problem of uneven height of brush filaments at the end faces by simply controlling the length of the brush filaments. Compared with the traditional abrasive brush with a bundled structure, the present invention avoids the waste of brush filaments caused by the flattening process.

[0013] 4. Since the working end of the brush bundle is gathered together and the root is naturally dispersed, the dispersed brush filaments are connected and fixed to the brush holder with liquid resin adhesive. The natural dispersion of the root of the brush bundle leaves gaps between the brush filaments. The abrasive particles and other dirt that fall off the brush filaments are difficult to accumulate between the brush filaments, and it is conducive to the cleaning of the abrasive brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the existing bundle-arranged grinding brush structure.

[0015] Figure 2 This is a schematic diagram of the brush filament bundle arrangement structure of the present invention.

[0016] Figure 3 for Figure 2 AA section structural diagram. DETAILED DESCRIPTION

[0017] like Figure 2 、 Figure 3 As shown, the present invention relates to an abrasive brush with brush filaments arranged in a tower shape, which includes a brush filament bundle evenly arranged on a brush holder, the brush filament bundle is composed of an effective number of brush filaments 2, and the cross section of the brush holder 3 is circular (or can be made into a suitable cross-sectional shape such as a circular ring, an ellipse, a rectangle, a trapezoid, a fan, a triangle or a polygon according to different uses), and Figure 1 Compared with the traditional brush bundle 1 shown, the brush filaments 2 fixedly connected to the brush holder 3 form an arrangement structure with a trapezoidal longitudinal cross-section, that is, the top ends of the brush filaments 2 are gathered together, and the other ends are naturally dispersed or evenly dispersed to form a brush bundle structure with a trapezoidal longitudinal cross-section, that is, a tower-shaped arrangement, and the lower ends of the dispersed brush filaments 2 are fixedly connected to the brush holder 3.

[0018] Implementation process of the present invention:

[0019] After a brush bundle consisting of multiple brush filaments 2 with a diameter of 0.1 to 10 mm and containing abrasive particles of different particle sizes such as silicon carbide, ceramics, artificial diamonds, etc. is inserted into the conical sockets (grooves) evenly distributed on the brush bundle plug-in board, the top of the brush bundle is gathered, and the lower end of the brush bundle is naturally dispersed. A height-fixing module is placed under the brush bundle plug-in board. The height-fixing module of the selected height is used to control the height of the brush bundle extending out of the resin adhesive 3, i.e., the brush holder. Then, an appropriate amount of resin adhesive 3 is injected into the glue injection groove of the brush holder. The plug-in board with the brush bundle inserted is placed vertically above the glue injection groove, and the dispersed end of the brush bundle is immersed in the liquid resin adhesive 3. The height-fixing module is then used to adjust the distance between the operating table and the plug-in board. After the resin adhesive 3 is completely cured, the brush bundle plug-in board and the height-fixing module are removed to complete the present invention. After the present invention is assembled on the flange 4, the brushing operation can be carried out. The brush filament material of the present invention can also be plastic brush filament, metal brush filament, animal hair, plant fiber, etc. The scope of use of the present invention includes but is not limited to dust prevention, combing, cleaning, grinding, polishing, etc.

[0020] The technical solution of the present invention has undergone laboratory scale-up pilot testing, i.e., a smaller-scale test of the product before large-scale mass production. The process scale-up process has good reproducibility. After the pilot test, a user survey was conducted on a small scale. The survey results show that the tower-shaped arrangement of the brush filaments has a higher overall support force in the initial grinding stage, while not affecting the dispersion performance of the brush filaments. This greatly improves production efficiency and brush filament utilization, effectively solves the problems of lodging and wire breakage caused by mutual friction and wear between the brush filaments, and makes it difficult for stains to remain between the brush filaments, which is conducive to cleaning and disinfection of the brush. The present invention can also adjust the support force of the brush filaments 2 by increasing or decreasing the amount of glue injection, i.e., the fixed depth of the brush filaments, and the length of the brush filaments. The technical solution of the present invention is a product with a complete and reasonable structure designed based on independent research and development, and has high user satisfaction.

Claims

1. An abrasive brush with brush filaments arranged in a tower shape, comprising a brush filament bundle evenly distributed on a brush holder, wherein the brush filament bundle is composed of an effective number of brush filaments, characterized in that The longitudinal cross-section of the brush filament bundle is a trapezoidal structure, the diameter of the brush filament is 0.1 to 10 mm, the cross-section of the brush holder is circular, annular, elliptical, rectangular, trapezoidal, fan-shaped or triangular, and one end of the brush filament bundle is fixedly connected to the brush holder.

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