Multi-wheel for grinding

Abstract

The present invention relates to a multi-wheel for grinding, comprising: a rotary handle; a pair of rotating disks which are provided at both end portions of the rotating handle so as to be spaced apart from each other in a direction facing each other, and which have a coupling hole formed in the center portion thereof to be coupled to the rotating handle; the plurality of grinding discs are arranged between the rotating discs and are used for grinding a processed object; and scattering discs which are interposed between the polishing discs and between the polishing discs and the rotating disc so that the working fluid ejected toward the polishing discs is scattered toward the tip sides of the polishing discs. As the working fluid collides with the scattering disc rotating at a high speed, a part of the working fluid generates ungranulated mist, so that the periphery of the grinding disc is always kept moisture, the spraying range area of the working fluid can be increased to the maximum extent, and the use cost of the working fluid can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to a grinding wheel, and more particularly, to a grinding wheel in which a working fluid injected toward the wheel is dispersed toward the wheel again, thereby ensuring that sufficient moisture is always maintained around the wheel. This not only improves grinding efficiency but also effectively reduces waste of the working fluid. Background Art

[0002] Typically, flat panel display panels such as liquid crystal displays (LCDs) or organic laser displays (OLEDs), or light guide plates (LGPs) disposed in LCDs, require the original panels to be cut into desired sizes before use.

[0003] Hereinafter, the processing objects such as the original plate, glass substrate, light guide plate and other panels are collectively referred to as substrates.

[0004] As mentioned above, the edges of the cut substrates need to be ground. Figure 1 Several typical grinding wheels are shown.

[0005] As shown in the figure, the upper wheels 20a, 20b and the lower wheel 30 are staggered in a non-overlapping manner so as to be able to grind the upper and lower edges of the substrate S at the same time. The upper wheels 20a, 20b and the lower wheel 30 are provided with grinding discs that directly contact the substrate to grind the edges.

[0006] When the edge of the substrate S is polished using a conventional polishing wheel, polishing powder is generated. The polishing powder thus generated adheres to the surface of the substrate, thereby contaminating the substrate.

[0007] Therefore, during the grinding process, it is necessary not only to spray a working fluid to remove grinding powder, but also to reduce the wear rate and temperature of the high-speed rotating grinding disk.

[0008] However, when the grinding device sprays coolant, the coolant is directly discharged to the outside after contacting the grinding disc once. In order to supply a sufficient amount of coolant, a large amount of coolant needs to be sprayed. Therefore, there is a limitation in reducing the amount of coolant used.

[0009] Prior art literature

[0010] Patent Literature

[0011] Patent Document 1: Korean Patent Gazette No. 2137058 (July 17, 2020) Summary of the Invention

[0012] In order to solve the above-mentioned problems, the purpose of the present invention is to provide the following grinding wheels, so that the working fluid injected toward the multi-wheels is scattered toward the multi-wheel side again, ensuring that sufficient moisture is always maintained around the multi-wheels, thereby not only improving the grinding efficiency but also effectively reducing the waste of working fluid.

[0013] In order to achieve the above-mentioned purpose, the multi-wheel for grinding of the present invention includes: a rotating shank portion; a pair of rotating disks, which are arranged at the two side ends of the rotating shank portion in directions facing each other, and a coupling hole is formed in the center portion for coupling with the rotating shank portion; a plurality of grinding disks, which are arranged between the rotating disks and are used to grind the workpiece; and a scattering disk, which is interposed between the grinding disks and between the grinding disks and the rotating disks, so that the working fluid injected toward the grinding disks is scattered toward the tip side of the grinding disks.

[0014] The scattering disk includes: a disk body in an annular shape, with a through hole formed in the center thereof for allowing the rotating handle to pass through; and a plurality of blades formed at intervals on the outer peripheral surface of the disk body.

[0015] The blades protrude outward from the circumferential surface of the disk body and are inclined toward the axial direction with reference to an imaginary line at the center of the circumferential surface of the disk body in the width direction when the disk body is viewed from a side direction perpendicular to the axial direction.

[0016] The number of the scattering disks corresponds to the number of the grinding disks, and the blades formed on each scattering disk are inclined in the axial direction so that the scattered working fluid is directed toward the tip end side of the adjacent grinding disk.

[0017] When viewed from the axial direction of the disk body, the blades are inclined toward the rotation direction of the disk body.

[0018] When the disk body is viewed from the axial direction, the blades are inclined at an angle of 0° to 90° in the circumferential direction with reference to a virtual line passing through the center of the disk body.

[0019] According to the structure as described above, the present invention can provide the following effect. Since a scattering disk is provided on the rotating handle to cause the working fluid sprayed toward the grinding disk to scatter again toward the side of the grinding disk, as the working fluid collides with the high-speed rotating scattering disk, a part of the working fluid generates ungranulated mist, thereby ensuring that moisture is always maintained around the grinding disk. As a result, not only can the spray range area of ​​the working fluid be maximized, but the cost of using the working fluid can also be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a perspective view showing the structure of a conventional multi-wheel for grinding.

[0021] Figure 2 It is a perspective view showing a multi-wheel for grinding according to an embodiment of the present invention.

[0022] Figure 3 for Figure 2 Exploded three-dimensional diagram.

[0023] Figure 4 To show Figure 3 A three-dimensional diagram of the composition and structure of the scatter disc.

[0024] Figure 5 for Figure 2 Side view and cross-sectional view.

[0025] Figure 6 When viewed from the side at a right angle to the axis Figure 3 Figure of the scattered disk.

[0026] Figure 7 Observed from the axial direction Figure 3 Figure of the scattered disk.

[0027] Description of Reference Signs

[0028] 100: Rotating handle

[0029] 200a, 200b: Rotating disk

[0030] 300: Grinding disc

[0031] 400: Scattered disc

[0032] 410: disk body

[0033] 420: Blade DETAILED DESCRIPTION

[0034] Hereinafter, a multi-wheel for grinding according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0035] For reference, in this specification and claims, the terms and words used should not be limited to the ordinary meaning or dictionary meaning, and should be interpreted based on the meaning and concept that are consistent with the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the terminology in order to explain his own invention in the best way.

[0036] Furthermore, in this specification, the embodiments described and the structures shown in the accompanying drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. It should be understood that at the time of applying for the present invention, there may be a variety of equivalent technical solutions and variations that can replace them.

[0037] Below, refer to Figures 2 to 7The preferred embodiments of the present invention are described in detail.

[0038] As shown in the figure, the multi-wheel for grinding of the present invention includes: a rotating handle 100; a pair of rotating disks 200a and 200b, which are arranged at the two side ends of the rotating handle 100 in directions facing each other, and a coupling hole 201 is formed in the center portion to be coupled with the rotating handle 100; a plurality of grinding disks 300, which are arranged between the rotating disks 200a and 200b and are used to grind the workpiece; and a scattering disk 400, which is interposed between the grinding disks 300 and between the grinding disks and the rotating disks 200a and 200b, so that the working fluid injected toward the grinding disk 300 is scattered toward the tip side of the grinding disk 300.

[0039] First, the rotating handle 100 is connected to the rotating shaft of the motor as a structural element, and includes a shank 110 having a predetermined length and a flange 120 formed at one end of the shank 110 .

[0040] A rotating shaft receiving portion 111 is formed at one end of the handle 110 and is coupled to the rotating shaft of the motor. A threaded fastening hole 112 is formed at the other end for fastening the handle 110 and the rotating shaft via a fastening unit (not shown). Figure 5 ).

[0041] Furthermore, a plurality of communicating fastening holes H are formed in a circumferential direction of the flange portion 120 .

[0042] The rotating disks 200a and 200b are a pair of disc-shaped structures arranged at the two side ends of the rotating handle 100, and are separated and arranged on one side and the other side in directions facing each other. A coupling hole 201 is formed in the center to be inserted into the rotating handle 100.

[0043] The rotating disks 200a and 200b are connected to the rotating handle 100 and rotate along with the rotating handle.

[0044] Furthermore, a plurality of interconnected fastening holes H are formed on the rotating disks 200a, 200b, the grinding disk 300 and the scattering disk 400 to be described later.

[0045] Therefore, when the fastening unit corresponding to the communicating fastening hole H is fastened, the rotating handle 100 , the rotating disks 200 a and 200 b , the grinding disk 300 , and the scattering disk 400 are press-bonded to form an integrated structure.

[0046] In addition, various coupling protrusions (not shown) and coupling grooves (not shown) are additionally formed between the handle 110 of the rotating handle 100 and the rotating disks 200a, 200b, the grinding disk 300 and the scattering disk 400 so that they can complement each other, thereby preventing the disks from slipping in the direction of rotation when the rotating handle 100 rotates.

[0047] The grinding disc 300 is disposed between the rotating discs 200a and 200b and grinds the grinding surface or edge of the workpiece through rotational friction. The grinding disc 300 may be a large disc having a diameter larger than that of the rotating discs 200a and 200b.

[0048] Specifically, the grinding disc 300 includes a plurality of grinding wheels 310 formed at predetermined intervals, and a grinding tip 320 detachably provided on an outer circumference of the grinding wheel 310 .

[0049] Preferably, the grinding tips 320 provided on the plurality of grinding wheels 310 should have different roughness.

[0050] That is, preferably, the grinding roughness of the grinding tip 320 gradually decreases or increases from one side to the other side.

[0051] Furthermore, the grinding disc 300 can be manufactured in different widths according to the type or purpose of the workpiece to be ground.

[0052] The workpiece is a flat-plate component used in multiple industrial fields, such as a printed circuit board, a display panel, a glass substrate, wood, a metal plate, etc.

[0053] On the other hand, the scattering disk 400 is located between the grinding disks 300 and between the grinding disks 300 and the rotating disks 200a and 200b. During the grinding process, the working fluid sprayed toward the grinding disk 300 and then falling can be scattered again toward the grinding tip 320 side of the grinding disk 300.

[0054] The scattering disk 400 of the present invention includes: a disk body 410 in an annular shape, with a through hole 401 formed in the center for the rotating handle 100 to pass through; and a plurality of blades 420 formed on the outer circumference of the disk body 410 in a spaced manner.

[0055] The disk body 410 is in the shape of a disk having a smaller diameter than the rotating disks 200 a and 200 b and the grinding disk 300 .

[0056] Furthermore, a plurality of communicating fastening holes H as described above are also formed on the axial surface of the disk body 410 .

[0057] The blades 420 protrude outward from the circumferential surface of the disk body 410. When the disk body 410 is viewed from a side direction perpendicular to the axial direction, the blades 420 form an arc shape inclined toward the axial direction with the imaginary line A at the center of the circumferential surface of the disk body 410 in the width direction as a reference (see Figure 6 ).

[0058] That is, the blade 420 is in an arc shape, which is very helpful for causing the fallen working fluid to fly back toward the grinding disc 300 , that is, toward the upper part or the lower part.

[0059] Moreover, if Figure 3 and Figure 6 As shown, the number of the scattering discs 400 corresponds to the number of the grinding discs 300 , and the blades 420 formed on each scattering disc 400 can be designed to be inclined toward the axial direction so that the scattered working fluid is directed toward the grinding tip 320 side of the adjacent grinding disc 300 .

[0060] And, as Figure 7 As shown, when viewed from the axial direction of the disk body 410 , the blades 420 are inclined and protrude toward the rotation direction of the disk body 410 .

[0061] That is, with the workpiece as a reference, the blades 420 of the scattering disk 400 located at the lower portion protrude in the clockwise direction, and the blades 420 of the scattering disk 400 located at the upper portion protrude in the counterclockwise direction.

[0062] Furthermore, when the disk body 410 is viewed from the axial direction, the blades 420 may be inclined at an angle of 0° to 90° in the circumferential direction with reference to a dotted line B passing through the center of the disk body 410 .

[0063] Furthermore, the blade 420 may have a structure in which the cross-sectional width gradually decreases from the lower portion to the upper portion.

[0064] This is because when the working fluid collides with the blades 420 rotating at a high speed, the physical impact resistance can be minimized by reducing the cross-sectional thickness of the blades 420 .

[0065] The scattering disk 400 performs the function of causing the working fluid that has been sprayed and fallen toward the multiple wheels to be scattered again toward the grinding disk 300. Therefore, as the working fluid collides with the high-speed rotating scattering disk 400, a portion of the working fluid is converted into ungranulated mist, thereby ensuring that moisture is always maintained around the grinding disk 300. This not only maximizes the spray range area of ​​the working fluid, but also significantly reduces the cost of using the working fluid.

[0066] The present invention described above is not limited to the embodiments and drawings. It should be clear that ordinary technicians in the technical field to which the present invention belongs can make various modifications, deformations and changes without departing from the technical concept of the present invention.

Claims

1. A grinding wheel, characterized in that: include: Rotating handle; A pair of rotating discs are spaced apart and arranged at both ends of the rotating handle in directions facing each other, and a coupling hole is formed at the center thereof for coupling with the rotating handle; a plurality of grinding discs, disposed between the rotating discs, for grinding a workpiece; as well as The scattering disk is interposed between the grinding disks and between the grinding disks and the rotating disk, and scatters the working fluid injected toward the grinding disks toward the tip ends of the grinding disks.

2. The grinding wheel according to claim 1, wherein: The scattering disc comprises: a disk body in an annular shape, with a through hole formed in the center thereof for the rotation handle to pass through; and A plurality of blades are formed at intervals on the outer peripheral surface of the disk body.

3. The grinding wheel according to claim 2, wherein: The blades protrude outward from the circumferential surface of the disk body and are inclined toward the axial direction with reference to an imaginary line at the center of the circumferential surface of the disk body in the width direction when the disk body is viewed from a side direction perpendicular to the axial direction.

4. The grinding wheel according to claim 3, wherein: The number of the scattering disks corresponds to the number of the grinding disks, and the blades formed on each scattering disk are inclined in the axial direction so that the scattered working fluid is directed toward the tip end side of the adjacent grinding disk.

5. The grinding wheel according to any one of claims 2 to 4, characterized in that: When viewed from the axial direction of the disk body, the blades are inclined toward the rotation direction of the disk body.

6. The grinding wheel according to claim 5, wherein: When the disk body is viewed from the axial direction, the blades are inclined at an angle of 0° to 90° in the circumferential direction with reference to a virtual line passing through the center of the disk body.

Images