FIELD OF INVENTION:
[001] The present invention relatesto the field of watch hand. The present invention
in particular relates to a system and method for brush finish watch hand.
DESCRIPTION OF THE RELATED ART:
5 [0021 Conventional watch pointers have been plated with gold, rhodium, black
rhodium, etc., which have a diamond-cut and mirror-polished surface, which also
has a decorative and rust-preventive effect, atler finishing the pointer shape. All
were achromatic tones. As a conventional technique (1) for obtaining a colored
guideline, there is a method of obtaining a color tone such as blue or brown by an
10 interference color such as a metal oxide by a vapor phase method such as vapor
deposition, sputtering, or ion plating. As a prior art (2), there has been a method of
obtaining a color tone such as blue or brown by using an interference color in the
initial state of plating precipitation by using black rhodium, black ruthenium
(Japanese Patent Publication No. 63-9027) or the like. As a conventional technique
15 (3) there is a method of performing decorative plating 2 after completion of
machining of the pointer to form a paint or ink layer 12 on the surface ofthe pointer.
As a conventional technique (4), an iron-based material is used as a material as seen
in the colored pointers for watches made in Europe, and this is heat-treated (blue
ink) at 250 to 380 ° C to obtain a blue-based color tone.
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[003] Reference may be made to the following: . .
[004] Publication No. CN 104972283 relates to a method for improving the
appearance expressive force of a metal frame of a mobile terminal. The method
comprises the steps of conducting plane machining on the ot:1ter surface of the metal
frame to enable the outer surface of the metal frame to have a plane effect,
conducting surface roughening on the outer surface of the metal frame to enable the
outer surface of the metal frame to have a matt finish effect, conducting primary
oxidation treatment on the whole metal frame to enable an oxidation film to be
formed on the outer surface of the metal frame, conducting graphic slot mac]lining
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on the outer surface of the metal frame and making the graphic slot have a bright
surface effect, and conducting secondary oxidation treatment on the whole metal
frame to enable an oxidation film to be formed on the surface of the graphic slot.
The outer surface of the metal frame is made to have the matt finish effect through
5 surface roughening and the graphic slot having the bright surface effect is formed
in the outer surface of the metal fr~me, so that a stereoscopic effect is realized for
the outer surface of the metal frame through the intersection of the matt finish and
the bright surface, the appearance expressive force is improved, and user experience
is improved.
10 [005] Publication No. JPH024982 relates to a colored hand for watch having
metallic luster and full of color variety by subjecting a metallic hoop to required
machining and then to ornamental plating, forming a colored electrodeposited resin
layer on both sides of the above or selectively only on the top ofthe above, baking
this resin layer, and then carrying out finish blanking into a hand shape.
15 Constitution: Machining, such as surface pressing, pipe forming, and, pipe
caulking, is applied to a hoop of brass, nickel silver, etc., having a hand finish
blanking positioning guide hole and a center hole. Subsequently, an ornamental
plating layer of Au, Ni, etc., is formed on the above and a colored electrodeposited
resin layer of blue, brown, green, etc., is further formed on both sides or selectively
20 on the top alone, and then, the above stock is baked and subjected to finish blanking
into a stand shape through the above guide hole, by which the colored hand for
watch is manufactured. By this method, the above hang having metallic luster and
full of color variety can be obtained.
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[0061 Publication No. JP20 1 0223891 relates to a method of manufacturing the
pointer for a timepiece having a cubic massive feeling of a curved surface shell
round shape combined with high-class texture, and also possessing high visibility.
The method of manufacturing the pointer for the timepiece is adopted, consisting
of the first step of implementing continuous press working of a flat metal strip
material followed by forming a sheath hole, bleaching out an outer shape, and
finally producing a flat pointer blank, the second step of implementing polishing of
a 3 -3-
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the top face of pointer blank with elastomer tools to round off and chamfer the
outline contour edge line of the pointer blank, and the third step of forming a coated
top layer with plating and coating ofthe surface of pointer blank.
[007] Publication No. GB2031621.relates to a hand for a timepiece is formed in a
5 two-layer construction, from a hard metal which is clad with a soft metal. The hard
metal layer permits secure fixing of the hand to a shaft, as by a portion 12, while
minimizing the possibility of deformation ofthe hand during such fixing. The· soft
metal layer can be easily formed into a desired pattern or be provided with a surface
finish to provide an attractive appearance. The hand may thus be as thin as 30-50
10 microns and may for example be of nickel or stainless steel clad with gold or copper.
The hands are blanked from a contint:1ous strip using a diamond- tipped tool.
[008] Publication No. JPH05307089 relates to watch hands thin and presenting
three-dimensional sense and a method of manufacturing them. In manufacturing
hands for a watch, hand body and seat are formed by a surface press process prior
15 to formation of a boss and a boss hole. Therefore, increasing the pressure of the
surface-press process does not influence the precision of the boss hole. When the
boss and boss hole are formed by the surface-press process, a curved surface can be
formed without producing burrs at the bore of the lower opening ofthe boss hole.
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[009] Publication No. CN I 03097967 relates to a special hand for sudden
acceleration. Said hand is mounted such that it can pivot about an axis so as to be
able to indicate a piece of information. Said hand is produced from an at least
partially amorphous metal alloy.
[010] In order to overcome above listed prior art, the present invention aims to
provide a system and method for brush finish watch hands. The brushed finish is
obtained by pulling a brush over the surface of the metal concrete, after the surface
has been levelled.
OBJECTS OF THE INVENTION:
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10111 The principal object of the present invention is to provide a system and
method for brush finish watch hands.
[012] Another object of the present invention is to provide a simple and effective
method of brush finish for watch hand in which brushed finish is obtained by
5 pulling a brush over the surface of the metal concrete, after the surface has been
levelled.
[013] At the outset of the description that follows, it is to be understood that
the ensuing description only illustrates a particular form of this invention.
However, such a particular form is only an exemplary embodiment and is not
I 0 intended to be taken restrictively to imply any limitation on the scope of the
present invention.
SUMMARY OF THE INVENTION:
[014] The present invention relates to a system and method for brush finish watch
hands. The brushed finish is obtained by pulling a brush over the surface of the
15 metal concrete, after the surface has been levelled. The type of finish obtained will
depend upon the coarseness of the brush bristles
[0151 The present invention provides a system and method for brush finish watch
hands as referred in figure I. The brushed finish is obtained by pulling a brush over
the surface of the metal concrete, after the surface has been levelled. The type
20 of finish obtained will depend upon the coarseness of the brush bristles. The
brushing system; as shows in figure 2; comprises base l; auto coiler 2; cylinder
supporting col ul'nn3; I inear rod less cyl inder4; brushing head 5; pneumatic strip
feeder 6; strip guide way 7; brush 8; water collecting tank 9; and slurry collecting
tray I 0. Fig I and 2
25 [016] Initially the brushing head 111 home position, after strip setting select the
number of strokes required for brushing operation. ln brushing head Z axjs is
provided to apply depth. Before start; operation releases the depth to maximum
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height zero, once machine on cylinder along with brushing head and brush start
reciprocate in horizontal direction. Then Z axis is adjusted to get the desired depth
of cut. Once the cutting is done the strip guide way releases the brass strip and the
pneumatic strip feeder feeds the brass strip to its next location. Once the setting is
5 correctly done the machine can be set to automatic mode so the above mentioned
process repeats continuously.