JP2003291071A - Polishing tool made from non-woven cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polishing tool made from non-woven cloth as an improvement of any conventional polishing cloth involving such problems that the polishing and buffing residues remain without being exhausted from between a work to be polished and a polishing roll to cause generation of scratches and there is a poor follow-up characteristics to the surface unevenness, etc., existing at the surface of the work to generate easily an unevenness in polishing workmanship. <P>SOLUTION: The polishing roll 2 made from non-woven cloth is provided on the periphery of a core material 1, and a plurality of straight, curved or spiral grooves 3 are formed at the peripheral surface of the polishing roll 2. One or two ends of each groove 3 are left open at the end face(s) in the axial direction of the polishing roll. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing tool provided with a polishing roll made of non-woven fabric. Specifically, the present invention relates to a polishing tool suitable for polishing the surface of a plate-shaped material made of various materials such as copper, aluminum and resin, a printed circuit board or the like.

[0002]

2. Description of the Related Art In the process of manufacturing a printed circuit board, it is necessary to polish the surface before and after forming a wiring pattern by plating or etching. Further, even when the through holes and the recesses are filled with the resin to fill the holes, polishing for removing the sag and burrs is necessary. In addition, plate-shaped materials other than the printed circuit board are surface-polished as necessary. Conventionally, as an example of a polishing tool for performing such polishing, there is a polishing tool shown in FIG. This polishing tool has a cylindrical core material A.
A non-woven polishing roll B is provided on the outer periphery of
When the polishing roll B is rotated while being pressed against the surface of the object to be polished, the surface is polished by the abrasive grains contained and fixed in the polishing roll B.

[0003]

Today, printed circuit boards are
It is widely used in OA equipment, home appliances, and other applications, and its applications are expected to continue to expand. In response to the expansion of this application, further improvement of the performance of the printed circuit board is required, and it is indispensable to make the wiring high-density, light-weight, and multi-layer. There are the following problems in polishing the printed circuit board having such a high density, thinness and multilayer structure with the polishing tool shown in FIG. (1) Since polishing scraps and buff scraps are not discharged and remain between the printed circuit board and the polishing roll, scratches (polishing stitches having a depth of a count or more) are generated. In severe cases, the patterns are stretched so that adjacent patterns come into contact with each other, the patterns are broken, or peeled off. (2) When the unevenness cannot be sufficiently followed and the printed board has through holes and unevenness, polishing residue occurs on the inner surface and the bottom surface thereof. (3) The contact and disconnection of the wiring pattern are problems peculiar to the printed circuit board, but other problems such as scratches and polishing residue are problems common to the objects to be polished other than the printed circuit board.

[0004]

One of the non-woven fabric polishing tools of the present invention is to provide a non-woven fabric polishing roll on the outer periphery of a core material,
A plurality of straight, curved or spiral grooves are formed on the outer peripheral surface of the polishing roll.

Another non-woven fabric polishing tool of the present invention is one in which one end or both ends of a groove are opened to an axial end face of a polishing roll.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) An example of an embodiment of a non-woven fabric polishing tool of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, this non-woven cloth polishing tool is provided with a non-woven cloth polishing roll 2 on the outer periphery of a cylindrical core 1.
Two or more spiral grooves 3 (hereinafter referred to as spiral grooves 3) are formed on the outer peripheral surface of the polishing roll 2.

The polishing roll 2 has abrasive grains (silicon carbide) and short fibers (length several mm to several tens) on the outer peripheral surface of the core material 1.
mm) fixed by a binder resin,
Simultaneously with the molding, it is integrated with the core material 1. Here, the core material 1 has a length of 610 mm and the polishing roll 2 has an outer diameter of 150 mm. There is no limitation on the type or particle size of the abrasive grains,
It can be appropriately selected from known or new abrasive grains. Also, there is no particular limitation on the type or length of the short fibers. However, if the short fibers are too short, the entanglement of the short fibers with each other is weakened and the strength and durability of the polishing roll 2 are deteriorated. On the other hand, if the short fibers are too long, the mixing with the binder resin will be insufficient and the homogeneity will be impaired. Therefore, it is desirable to determine the type and length of the short fibers in consideration of the above points.

The spiral groove 3 is a groove having a width of 4 mm and a depth of 10 mm, and as shown in FIG. 1, the polishing roll 2 has a constant pitch.
Is formed on the outer peripheral surface of the. Further, as shown in FIGS. 2A and 2B, one end 4 of each spiral groove 3 is open to one end face 5 in the axial direction of the polishing roll 2, and the other end 6 is the polishing roll 2.
Is open at the other end face 7 in the axial direction. By forming a plurality of such spiral grooves 3 on the outer peripheral surface of the polishing roll 2, the surface layer portion of the polishing roll 2 is divided by the spiral groove 3, and a large number of ridges 8 are formed on the surface layer portion.

The length of the core material 1 and the outer diameter of the polishing roll 2 are merely examples, and can be appropriately changed. Also,
The width and depth of the spiral groove 3 are also examples and can be changed as appropriate. Further, the angle of the spiral groove 3 (polishing roll 2
The angle with respect to the axis) can be changed as appropriate.

(Second Embodiment) Another embodiment of the nonwoven fabric polishing tool of the present invention will be described with reference to FIGS. 3 and 4.
The basic structure of the non-woven fabric polishing tool shown in FIG.
Is the same as that shown in. The difference is that the groove 3 formed on the outer peripheral surface of the polishing roll 2 is replaced with a spiral groove and is a linear groove. Grooves 3 shown in FIG. 3 are also formed at a constant pitch on the outer peripheral surface of the polishing roll 2, one end 4 of which is open at one axial end surface 5 of the polishing roll 2 and the other end 6 is the other axial end surface of the polishing roll 2 ( (Not shown). Incidentally, FIG.
Although the linear groove 3 shown in is formed parallel to the axis of the polishing roll 2, it may be formed so as to cross the coaxial line.

The basic structure of the nonwoven fabric polishing tool shown in FIG. 4 is also the same as that shown in the first embodiment. The difference is that the groove 3 formed on the outer peripheral surface of the polishing roll 2 is a curved groove instead of the spiral groove. The grooves 3 shown in FIG. 4 are also formed on the outer peripheral surface of the polishing roll 2 at a constant pitch, one end 4 of which is open to one end face 5 in the axial direction of the polishing roll 2 and the other end 6 is the other end face in the axial direction of the polishing roll 2 ( (Not shown).

[0012]

According to the non-woven fabric polishing tool of the first aspect, a plurality of straight, curved or spiral grooves are formed on the outer peripheral surface of the polishing roll. Therefore, it has the following effects.

The polishing roll has an appropriate elasticity, and the followability to irregularities on the surface of the object to be polished is improved. Specifically, FIG.
As shown in FIG.
When pressed and rotated with an appropriate force, the large number of ridges 8 generated in the surface layer portion of the polishing roll 2 due to the formation of the groove 3 are twisted in accordance with the unevenness 12 present on the surface 11 of the object to be polished 10. , When it passes through the unevenness 12, it repels and returns to its original state. By repeating the twisting and restoring, the followability is improved, and the unevenness existing on the surface of the object to be polished and the side surface and the inner surface of the through hole are evenly polished.

In the non-woven fabric polishing tool according to a second aspect of the present invention, one end or both ends of the groove are open to the axial end face of the polishing roll.
Therefore, it has the following effects.

Polishing dust and buff dust are discharged from one end of the groove,
No polishing dust or buff dust remains between the surface of the portion to be polished and the polishing roll. Therefore, scratches caused by polishing dust and buff dust do not occur. In particular, when the object to be polished is a printed circuit board, the problem that the wiring pattern is stretched and adjacent patterns are in contact with each other, the pattern is broken, or peeled off is solved. It Which of the both ends of the groove the polishing dust or the buff dust is discharged is determined by the rotation direction of the polishing roll.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a non-woven fabric polishing tool of the present invention.

2A is a left side view of the nonwoven fabric polishing tool shown in FIG. 1, and FIG. 2B is a right side view thereof.

FIG. 3 is a perspective view showing another example of the embodiment of the nonwoven fabric polishing tool of the present invention.

FIG. 4 is a perspective view showing still another example of the embodiment of the nonwoven fabric polishing tool of the present invention.

FIG. 5 is an explanatory view showing a polishing state by the nonwoven fabric polishing tool of the present invention.

FIG. 6 is a perspective view showing an example of a conventional polishing tool.

[Explanation of symbols]

1 heartwood 2 polishing roll 3 grooves 4 One end of groove 5 One end face in the axial direction of the polishing roll The other end of 6 groove 7 Polishing roll's other axial end surface 8 convex stripes 10 Object to be polished 11 Surface of the object to be polished 12 Unevenness on the surface of the object to be polished

Claims (2)

[Claims] 1. A non-woven fabric polishing tool comprising a non-woven fabric polishing roll provided on the outer periphery of a core member, and a plurality of straight, curved or spiral grooves formed on the outer peripheral face of the polishing roll. 2. The non-woven fabric polishing tool according to claim 1, wherein one end or both ends of the groove are open to an axial end face of the polishing roll.