U.S. patent application number 13/645247 was filed with the patent office on 2013-04-11 for tip holder integrated with polishing-tips for concrete polishing machine.
This patent application is currently assigned to SASE Company, Inc.. The applicant listed for this patent is SASE Company, Inc.. Invention is credited to Hyun Joo Bin.
Application Number | 20130090047 13/645247 |
Document ID | / |
Family ID | 45506000 |
Filed Date | 2013-04-11 |
United States Patent
Application |
20130090047 |
Kind Code |
A1 |
Bin; Hyun Joo |
April 11, 2013 |
TIP HOLDER INTEGRATED WITH POLISHING-TIPS FOR CONCRETE POLISHING
MACHINE
Abstract
A polishing device is provided which is attachable to a tip
holder plate of a concrete polishing machine to polish a concrete
surface. The polishing device includes a tip holder that is
compression-molded using a heat resistant plastic material to
include a plurality of tip support portions. A plurality of
polishing tips are inserted into and bonded with the tip support
portions of the tip holder with the polishing tips protruding out
from the tip support portions when unworn. After the polishing tips
are worn an initial amount from polishing the concrete surface, the
tip support portions of the tip holder and the polishing tips are
adapted to collectively grind the concrete surface.
Inventors: |
Bin; Hyun Joo; (Incheon,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SASE Company, Inc.; |
Kent |
WA |
US |
|
|
Assignee: |
SASE Company, Inc.
Kent
WA
|
Family ID: |
45506000 |
Appl. No.: |
13/645247 |
Filed: |
October 4, 2012 |
Current U.S.
Class: |
451/540 |
Current CPC
Class: |
B24D 3/34 20130101; B24B
7/18 20130101; B24B 41/047 20130101 |
Class at
Publication: |
451/540 |
International
Class: |
B24B 41/00 20060101
B24B041/00; B24D 3/00 20060101 B24D003/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 5, 2011 |
KR |
10-2011-0101133 |
Claims
1. A polishing device attachable to a tip holder plate of a
concrete polishing machine to polish a concrete surface, the
polishing device comprising: a tip holder that is
compression-molded using a heat resistant plastic material, the tip
holder including a plurality of tip support portions; and a
plurality of polishing tips, each polishing tip inserted into and
bonded with a respective one of the tip support portions of the tip
holder with the polishing tip protruding out from the tip support
portion when in an unworn configuration, and wherein, after the
polishing tips are worn an initial amount from polishing the
concrete surface, the tip support portions of the tip holder and
the polishing tips are adapted to collectively grind the concrete
surface.
2. The polishing device of claim 1 wherein the tip support portions
of the tip holder are configured to pulverize and polish the
concrete surface together with the polishing tips after the
polishing tips are worn the initial amount.
3. The polishing device of claim 1 wherein the tip holder is
compression-molded with three to five polishing tip support
portions at intervals on a peripheral area to integrate and hold
the polishing tips.
4. The polishing device of claim 1, further comprising: a
concave-shaped holder socket adhered to the tip holder for
attaching the polishing device to the tip holder plate of the
concrete polishing machine.
5. The polishing device of claim 4, further comprising: a hook and
loop fastener device provided on an upper surface of the holder
socket to removably attach the holder socket and tip holder to the
tip holder plate of the concrete polishing machine.
6. The polishing device of claim 1 wherein the tip holder is
compression-molded with melamine resin or phenol resin.
7. The polishing device of claim 1 wherein the tip holder is
compression-molded with a mixture of melamine resin or phenol
resin, silicon carbide (SiC), carbon (C), and talc.
8. The polishing device of claim 7 wherein the mixture consists
essentially of 55% of melamine resin or phenol resin, 23% of
silicon carbide (SiC), 11% of carbon (C), and 11% of talc.
9. The polishing device of claim 1 wherein the polishing tips are
made of a mixture of phenol or epoxy resin, silicon carbide (SiC),
artificial diamond, tin oxide (SnO2), carbon (C), and chromium
(Cr).
10. The polishing device of claim 9 wherein the mixture consists
essentially of 44% of phenol or epoxy, 22% of silicon carbide
(SiC), 11% of artificial diamond, 11% of tin oxide
(S.sub.nO.sub.2), and 6% of chromium (Cr).
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit under 35 U.S.C.
.sctn.119 of Korean Patent Application No. 10-2011-0101133, filed
on Oct. 5, 2011, in the Korean Intellectual Property Office, which
application is incorporated herein by reference in its
entirety.
BACKGROUND
[0002] 1. Technical Field
[0003] The present disclosure relates to a tip holder integrated
with polishing tips that is attachable to a tip holder plate of a
concrete polishing machine.
[0004] 2. Description of the Related Art
[0005] Generally, to polish a concrete surface C clean and smooth,
a concrete polishing machine 1 having a plurality of tip holders 10
bonded with polishing tips 20 on tip holder plate 3 at a certain
intervals is used. The polishing work is conducted by rotating the
tip holder plate 3, which in turn rotates the tip holder 10 and
polishing tips 20 to grind the concrete surface C.
[0006] However, the conventional tip holder 10 shown in FIG. 1,
which is provided with polishing tips 20 at certain intervals, has
disadvantages. For example, with reference to FIG. 1, hollow tip
supports 11 in which the polishing tips 20 are coupled are formed
protrusively at certain intervals on the bottom circumference and
the polishing tips 20 and tip holder 10 are formed as independent
members, the tip holder 10 and the hollow tip supports being
injection molded with a plastic resin having weak resistance to
heat, such as nylon, PE, PP, or ABS, and their function is simply
hold and support the polishing tips 20. As such, the tip supports
11 of the tip holder 10 cannot polish a concrete surface C together
with the polishing tips 20, when the polishing tips 20 have been
worn down.
[0007] In addition, when polishing a concrete surface C using the
polishing tips 20 attached to the tip holder 10 made of a plastic
material, for example, nylon, PE, PP or ABS, which have weak
resistance to heat, as shown in FIG. 2a and FIG. 2b, the bottom of
the polishing tips 20, that is, the polishing tips 20 protruding
out of the tip supports 11 of the tip holder 10 is worn down to the
end by friction with the concrete surface C. At this condition, by
the heat generated by the friction between the end of the tip
holder 10, that is the tip supports 11 and polishing tips 20 and
between the concrete surface C, the end of the tip supports 11 of
the tip holder 10, made of a plastic material having a weak
resistance to heat, melts down and leaves swirling marks with the
molten resin from the tip support 11 of the tip holder 10 on the
concrete surface C.
[0008] Furthermore, when the swirling marks are formed on the
concrete surface C by the end of the tip supports 11 of the tip
holder 10, made of a plastic resin having weak resistance to heat,
for example, nylon, PE, PP, or ABS and molten into a ball-shape, by
the heat generated from grinding the concrete surface C together
with the polishing tips 20, extra polishing work is required to
remove the swirling marks from the concrete surface C.
BRIEF SUMMARY
[0009] Embodiments of the present invention provide a tip holder,
and more particularly, a tip holder, integrated with polishing
tips, which is attachable to a tip holder plate of a concrete
polishing machine. To replace conventional tip holders, which are
made of the plastic materials having weak resistance to heat, such
as nylon, PE, PP, ABS, etc., and installed with separate polishing
tips in tip holes thereof, the tip holder is compression molded
with a heat-resistant material with integrated polishing tips.
Beneficially, the ends of tip supports of the tip holder are well
adapted to not melt by heat generated during polishing, but rather
pulverize and polish the concrete surface together with the
polishing tips, preventing the swirling marks otherwise formed on a
concrete surface by the tip holders of conventional systems, which
become molten when the polishing tips are worn down. In addition,
another benefit of embodiments of the present invention is that the
compression molded tip holder with integrated polishing tips can
help polish the concrete surface as an assistant polishing means,
improving the polishing performance and extending the lifecycle of
the polishing tips.
[0010] According to embodiments of the present invention, the tip
holder is made of a plastic material and installable on a tip
holder plate of a concrete polishing machine to polish concrete
surfaces with polishing tips which are inserted and bonded with the
tip holder, in a manner that the polishing tips protruding from the
tip holder are ground while polishing the concrete surface together
with the tip holder, so that the scratch of plastic swirl marks
otherwise left on the surface by the tip holder and polishing tips
can be prevented. In some embodiments, the tip holder is
characterized by being made of melamine resin or phenol resin, or
in another example embodiment, a mixture of 55% of phenol resin,
23% of silicon carbide (SiC), 11% of carbon (C), and 11% of
talc.
[0011] To reiterate, embodiments of the present invention provide a
tip holder integrated with polishing tips and made of a heat
resistant material by compression molding. Beneficially, the ends
of the tip supports of the tip holder are well adapted to not melt
by heat generated during polishing, but rather pulverize and polish
the concrete surface together with the polishing tips, preventing
the swirling marks which can otherwise be formed on the concrete
surface when polishing with conventional polishing machines. In
addition, the compression molded tip holder with integrated
polishing tips can help polish the concrete surface as an assistant
polishing means, improving the polishing performance and extending
the lifecycle of the polishing tips.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0012] FIG. 1 is a schematic, perspective, exploded view of a
conventional tip holder.
[0013] FIG. 2a shows a conventional tip holder installed on a tip
holder plate of a concrete polishing machine.
[0014] FIG. 2b shows the operational position of a concrete
polishing machine and polished concrete surface using a
conventional tip holder.
[0015] FIG. 3 is a schematic, perspective view of an embodiment of
a tip holder in accordance with the present invention.
[0016] FIG. 4 is an exploded view of an example embodiment of the
tip holder in accordance with the present invention.
[0017] FIG. 5 shows the tip holder of FIGS. 3 and 4 installed on a
tip holder plate of a concrete polishing machine.
[0018] FIGS. 6a and 6b show the operating position of a concrete
polishing machine and a polished concrete surface using an example
embodiment of the tip holder in accordance with the present
invention.
DETAIL DESCRIPTION
[0019] The tip holder integrated with polishing tips (hereinafter,
shall be referred to as "the tip holder") in accordance with
embodiments of the present invention is described in detail
referring to the accompanying drawings.
[0020] FIG. 3 is a schematic, perspective view and FIG. 4 is an
exploded view of an embodiment of the tip holder in accordance with
the present invention. FIG. 5 shows an embodiment of the tip holder
in accordance with the present invention installed on a tip holder
plate of a concrete polishing machine, and FIGS. 6a and 6b show the
operating position of a concrete polishing machine and a polished
concrete surface using an example embodiment of the tip holder in
accordance with the present invention
[0021] Before describing the tip holder 10a in accordance with
embodiments of the present invention in detail, the same or similar
numbering scheme will apply to the same or similar structure of the
conventional tip holder 10 described herein.
[0022] The tip holder 10a in accordance with embodiments of the
present invention is attachable to a tip holder plate 3 of a
concrete polishing machine 1 to rotate with the tip holder plate 3
driven by the concrete polishing machine 1 and to support and hold
polishing tips 20 which polish concrete surfaces C smoothly. With
reference to FIGS. 3 and 4, the tip holder 10a is compression
molded from a heat resistant material, inserted and integrated with
the polishing tips 20, so that the ends of tip supports 11 of the
tip holder 10a are well adapted to not melt by heat generated
during polishing work, but rather pulverize and polish the concrete
surface C together with the polishing tips 20. This is quite
different from conventional tip holders 10 (FIGS. 1 through 2b),
which are injection molded from plastic materials having weak
resistance to heat, such as nylon, PE, PP, ABS, etc., and installed
with separable polishing tips 20, which melt down and leave
swirling marks from the molten resin from the tip supports 11 of
the tip holder 10 on the concrete surface C when the polishing tips
20 are worn down
[0023] Here, along the circumference of the bottom of the tip
holder 10a, the tip holder 10a is formed with the polishing tips 20
as a single body. In some embodiments, three to five tip supports
11 are formed at a certain intervals to fix the polishing tips 20
as an integrated body. In one particular embodiment, four tip
supports 11 are formed at 90 degree intervals along the
circumference of the bottom of the tip holder 10a.
[0024] At the topside of the tip holder 10a, a concave-shaped
holder socket 30 may be provided to fix the tip holder 10a to the
tip holder plate 3 of a concrete polishing machine 1 by being
bonded with the outer circumference of the tip holder 10a with
adhesive 31. The holder socket 30 may be injection molded with a
plastic material that is the same as a similar socket that is
typically injection molded on a topside of the conventional tip
holder 10 as an integrated body.
[0025] A topside of the holder socket 30 may be provided with a
piece of Velcro tape 35 to bond the tip holder 10a to another piece
of Velcro tape 5 provided on the bottom of the tip holder plate 3
of the concrete polishing machine 1.
[0026] As described above, the tip holder 10a, compression molded
to enable the polishing tips 20 to be supported and fixed in the
tip supports 11, is configured such that the ends of the tip
supports 11 of the tip holder 10a do not melt down by heat
generated during polishing operation, but rather pulverize and
polish the concrete surface C together with the polishing tips 20,
since they are made of a heat resistance plastic material, for
example, 100% of melamine or phenol resin, or a composition of
melamine or phenol resin added with, for example, silicon carbide
(SiC), carbon (C), and talc as additives for improving the strength
and polishing performance of the polishing tips. For example, in
one particular embodiment, the material may be 55% of melamine or
phenol resin, 23% of silicon carbide (SiC), 11% of carbon (C), and
11% of talc.
[0027] In addition, the polishing tips 20 which are formed as an
integrated body in the tip supports 11 of the tip holder 10a, are
molded in the tip supports 11 of the tip holder 10a and fixed on
the tip holder plate 3 of a concrete polishing machine 1 and
rotated to polish concrete surfaces C. The polishing tips may be
formed in a cylindrical body having a convex bottom, and may be
comprised of phenol or epoxy resin, silicon carbide (SiC),
artificial diamond, tin oxide (SnO2), carbon (C), and Chromium (Cr)
203. An exemplary constitution is 44% of phenol or epoxy resin, 22%
of silicon carbide (SiC), 11% of artificial diamond, 11% of tin
oxide (SnO2), 6% of carbon (C), and 6% of Chromium 203 (Cr).
[0028] With the tip holder 10a integrated with the polishing tips
20 in accordance with embodiments of the present invention and
fixed to the tip holder plate 3 of a concrete polishing machine 1,
as shown in FIG. 5, driving the concrete polishing machine 1 to
rotate the tip holder plate 3 on which four tip holders 10a are
arranged at 90 degree intervals, then, as shown in FIG. 6a, the tip
holder 10a and the polishing tips 20 formed in the tip supports 11
rotate in the same direction as that of the tip holder plate 3. The
operator of the concrete polishing machine 1 will move the machine
slowly on the concrete surface with the polishing tips 20 contacted
on the concrete surface C to polish the concrete surface C.
[0029] During the polishing operation, when the bottom ends of the
polishing tips 20 protruding out of the tip supports 11 of the tip
holder 10a are worn out by friction with the concrete surface C up
to the end of the tip supports 11 of the tip holder 10a, the lowest
part of the tip holder 10a, that is, the end of the tip supports 11
will begin grinding the concrete surface C together with the
polishing tips 20. Different from conventional tip holders 10
(FIGS. 1 to 2b) made of a plastic resin which melts down by
friction with the concrete surface C when the polishing tips 20
protruding out of the tip holder 10 are worn out, the tip holder
10a in accordance with embodiments of the present invention does
not make swirling marks because the ends of the tip supports 11 do
not melt down but support the polishing tips 20, and the tip holder
10a formed with the polishing tips 20 as a single body also
polishes the concrete surface C together with the tip supports 11
and the polishing tips 20, achieving clean and smooth surface and
increased life span of the polishing tips 20.
[0030] While it is apparent that the illustrative embodiments of
the invention herein disclosed fulfills the objectives stated
above, it will be appreciated that numerous modifications and other
embodiments may be devised by those skilled in the art. In general,
in the following claims, the terms used should not be construed to
limit the claims to the specific embodiments disclosed in the
specification and the claims, but should be construed to include
all possible embodiments along with the full scope of equivalents
to which such claims are entitled.
* * * * *