High efficiency i-beam sander

Abstract

The utility model discloses a high -efficient I -shaped polishing wheel, it includes the wheel body, the outer circumferential surface of wheel body has the circumferential groove of width greater than the thickness of the workpiece of need polishing, the upper surface of wheel body is equipped with magic paste felt surface, the upper groove wall and lower groove wall of circumferential groove are equipped with second annular polishing layer and first annular polishing layer correspondingly, the lower surface of wheel body is equipped with the outer circle polishing layer. The utility model whole simple structure, the whole is I -shaped, realizes only with one consumable can be on a device high -efficiently complete three -side polishing, need not to change consumable or overturn workpiece, greatly simplifies the operation process, has promoted the consistency and automation level of polishing, has improved production efficiency, satisfies the automation production demand.

Description

Technical Field

[0001] This utility model relates to the field of grinding wheel technology, and in particular to a high-efficiency I-shaped grinding wheel. Background Technology

[0002] When grinding workpieces, sandpaper is usually used, and the sandpaper is attached to the grinding disc base by Velcro. For example, utility model patent "CN212706168U", entitled "A Novel Grinding Disc", discloses a novel grinding disc, which includes a grinding disc base, Velcro, and sponge sandpaper. The back of the grinding disc base is provided with a screw for connecting to a grinding device. The Velcro is fixedly connected to the bottom of the grinding disc base, and the sponge sandpaper is glued to the Velcro.

[0003] Taking the sanding of a mobile phone mid-frame as an example, the mid-frame typically consists of three surfaces that need to be sanded: surface A (the upper small plane), surface B (the outer plane), and surface C (the lower small plane). During the sanding process, a large-size sandpaper (e.g., 3-inch, 75mm diameter) is usually used first to sand surface B, and then smaller-size sandpaper (1-inch or 2-inch) is used to sand surfaces A and C respectively. When sanding surface C, the mid-frame needs to be removed, flipped, and re-clamped. This method not only requires frequent sandpaper changes and workpiece flipping, extending the sanding time, but also heavily relies on manual operation, resulting in low efficiency and failing to meet the needs of automated production. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a high-efficiency I-shaped grinding wheel with a reasonable structural design and multi-faceted grinding capability.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A high-efficiency I-shaped grinding wheel includes a wheel body. The outer circumferential surface of the wheel body has a circumferential groove with a width greater than the thickness of the workpiece to be ground. The upper surface of the wheel body is provided with a Velcro felt surface, which has good adhesion properties and facilitates mating with components with Velcro hooks, making it convenient for the grinding wheel to be installed and removed. A second annular grinding layer and a first annular grinding layer are respectively provided on the upper and lower groove walls of the circumferential groove, and an outer circular grinding layer is provided on the lower surface of the wheel body.

[0007] In a preferred embodiment of this invention, the wheel body is generally H-shaped. The wheel body includes a first disc, a support column, and a second disc connected sequentially from bottom to top.

[0008] In a preferred embodiment of this invention, the first disc is made of EVA, sponge, or polyurethane foam with a thickness of 3-7 mm and a hardness of 40-90 HC. The second disc is also made of EVA, sponge, or polyurethane foam with a thickness of 3-7 mm and a hardness of 40-90 HC. The EVA, sponge, or polyurethane foam with a hardness of 40-90 HC provides stable support and can adapt to the slight undulations on the workpiece surface, improving the uniformity of grinding.

[0009] In a preferred embodiment of this invention, the support column is made of EVA with a thickness of 7-10mm and a hardness of 70-100HC. Using EVA material to make the support column, with a hardness of 70-100HC, provides a certain degree of elasticity and strength, ensuring structural stability while adapting to vibrations during the grinding process. The specific thickness allows for grinding of workpieces of different thicknesses, demonstrating good versatility.

[0010] In a preferred embodiment of this invention, the number of support columns is one or two stacked and bonded together. When the workpiece is thick, two stacked and bonded support columns can be used to increase the support height, ensuring a proper positional relationship between the grinding wheel and the workpiece and grinding stability.

[0011] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed, with an overall I-shape. Due to the circumferential groove, a suitable spatial relationship is formed between the grinding wheel and the workpiece. This allows for grinding operations on different surfaces of the workpiece using the outer circular grinding layer, the first annular grinding layer, and the second annular grinding layer. This enables efficient three-sided grinding on a single machine using only one consumable, without the need to change consumables or flip the workpiece. This greatly simplifies the operation process, improves grinding consistency and automation, increases production efficiency, and meets the needs of automated production. Furthermore, the hook and loop felt surface has excellent adhesion properties, facilitating compatibility with components with hook and loop hooks, and simplifying the installation and removal of the grinding wheel. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0014] Figure 3 This is an exploded structural diagram of the present invention. Detailed Implementation

[0015] Example: See Figures 1-3 This utility model provides a high-efficiency I-shaped grinding wheel, which includes a wheel body. The outer circumferential surface of the wheel body has a circumferential groove with a width greater than the thickness of the workpiece to be ground. The wheel body is generally I-shaped.

[0016] The wheel body comprises a first disc 1, a support column 7, and a second disc 4 connected sequentially from bottom to top. Specifically, the first disc 1 is preferably made of EVA, sponge, or polyurethane foam with a thickness of 3-7 mm and a hardness of 40-90 HC. The second disc 4 is also made of EVA, sponge, or polyurethane foam with a thickness of 3-7 mm and a hardness of 40-90 HC. The EVA, sponge, or polyurethane foam with a hardness of 40-90 HC provides stable support and can adapt to the slight undulations on the workpiece surface, improving the uniformity of grinding.

[0017] The support column 7 is preferably made of EVA with a thickness of 7-10mm and a hardness of 70-100HC. Using EVA material to make the support column 7, and with a hardness of 70-100HC, provides a certain degree of elasticity and strength, ensuring structural stability while adapting to vibrations during the grinding process. The specific thickness allows it to meet the grinding needs of workpieces of different thicknesses, demonstrating good versatility.

[0018] The upper surface of the wheel is provided with a Velcro felt surface, which has good adhesion properties and is easy to cooperate with components with Velcro hook surfaces, facilitating the installation and removal of the grinding wheel. The upper and lower groove walls of the circumferential groove are respectively provided with a second annular grinding layer and a first annular grinding layer, and the lower surface of the wheel is provided with an outer circular grinding layer.

[0019] In manufacturing, the high-efficiency I-shaped grinding wheel of this utility model is preferably made by the following steps:

[0020] (1) Prepare EVA with a thickness of 4mm and a hardness of 70HC, cut it to obtain a first disk 1 and a second disk 4 with a circular shape;

[0021] (2) Prepare pyramid sandpaper with a thickness of 0.1-0.7mm, cut it to obtain a first circular sandpaper and a first and second annular sandpaper. Use a water-based adhesive to attach the first circular sandpaper to the outer surface of the first disc 1 to form an outer circular polishing layer 2. Use a water-based adhesive to attach the first annular sandpaper to the inner surface of the first disc 1 to form a first annular polishing layer 3. Use a water-based adhesive to attach the first annular sandpaper to the inner surface of the second disc 4 to form a second annular polishing layer 5. The first and second annular sandpapers have the same external dimensions.

[0022] (3) Prepare long-pile fabric and cut it to obtain a pile fabric layer with a circular shape. Then, use a water-based adhesive to stick the pile fabric layer to the outer surface of the second disc 4 to form a Velcro felt surface 6.

[0023] (4) Taking a workpiece with a thickness of 7mm as an example, prepare EVA with a thickness of 10mm and a hardness of 100HC, and cut it to obtain a circular support column 7. When the workpiece is thicker, two overlapping support columns 7 can be used to increase the support height, which increases the flexibility and adaptability of the support column 7. It can be adjusted according to different situations in actual production to meet diverse grinding needs, improve the versatility and practicality of the grinding wheel, and ensure the appropriate positional relationship and grinding stability between the grinding wheel and the workpiece. One end of the support column 7 is passed through the first annular sandpaper and bonded to the center of the inner surface of the first disc 1, and the other end of the support column 7 is passed through the second annular sandpaper and bonded to the center of the inner surface of the second disc 4. The outer diameter of the support column is two-thirds to three-quarters of the outer diameter of the first disc, that is, the support column is smaller than the first disc 1 and the second disc 4, forming a circumferential groove, and the whole is in the shape of an I-beam.

[0024] In other embodiments, the wheel body can also be an integral structure, that is, the first disc 1, the support column 7, and the second disc 4 are integrally connected, and a circumferential groove is directly machined on the outer circumferential surface of the wheel body. Then, sand is applied to the upper and lower groove walls and the lower surface of the wheel body with glue to form a second annular polishing layer 5, a first annular polishing layer 3, and an outer circular polishing layer 2.

[0025] During polishing, the circumferential groove creates a suitable spatial relationship between the polishing wheel and the workpiece, allowing the outer circular polishing layer 2, the first annular polishing layer 3, and the second annular polishing layer 5 to polish different surfaces of the workpiece. Taking the polishing of a mobile phone frame as an example, the mobile phone frame typically includes three surfaces to be polished: surface A (upper small plane), surface B (outer plane), and surface C (lower small plane). During polishing, the mobile phone frame workpiece is inserted into the central recess of the I-shaped polishing wheel. As the I-shaped polishing wheel descends, the first annular polishing layer 3 polishes surface A (upper surface), and as the I-shaped polishing wheel rises, the second annular polishing layer 5 polishes surface C (lower surface). The workpiece in the middle of the phone frame exits the concave position of the I-shaped grinding wheel. The I-shaped grinding wheel rotates 90 degrees, and the outer circular grinding layer 2 grinds the B side (side) of the workpiece. This allows for efficient three-sided grinding on a single machine using only one consumable, eliminating the need to change consumables or flip the workpiece. This greatly simplifies the operation process, improves grinding consistency and automation, increases production efficiency, and meets the needs of automated production. Furthermore, the Velcro felt surface 6 of the grinding wheel has excellent adhesion, facilitating its compatibility with components featuring Velcro hooks, and making the installation and removal of the grinding wheel convenient.

[0026] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. The use of other grinding wheels that are the same as or similar to these wheels is within the protection scope of this utility model.

Claims

1. A high-efficiency I-beam shaped grinding wheel, comprising a wheel body, characterized in that, The outer circumferential surface of the wheel has a circumferential groove with a width greater than the thickness of the workpiece to be polished. The upper surface of the wheel is provided with a Velcro felt surface. The upper and lower groove walls of the circumferential groove are respectively provided with a second annular polishing layer and a first annular polishing layer. The lower surface of the wheel is provided with an outer circular polishing layer.

2. The high-efficiency I-shaped grinding wheel according to claim 1, characterized in that, The wheel body is generally H-shaped.

3. The high-efficiency I-shaped grinding wheel according to claim 1 or 2, characterized in that, The wheel body includes a first disc, a support column, and a second disc connected sequentially from bottom to top.

4. The high-efficiency I-shaped grinding wheel according to claim 3, characterized in that, The first disc is made of EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC.

5. The high-efficiency I-shaped grinding wheel according to claim 3, characterized in that, The second disc is made of EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC.

6. The high-efficiency I-beam grinding wheel according to claim 3, characterized in that, The support column is made of EVA with a thickness of 7-10mm and a density of 70-100HC.

7. The high-efficiency I-beam grinding wheel according to claim 3, characterized in that, The number of support columns is one or two stacked and bonded together.

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