DESCRIPTION】
5
【Technical Field】
[0001] The present disclosure relates to a cutting apparatus
and a cutting method for cutting a material and, more
particularly, to a cutting apparatus and a cutting method for
10 cutting a large piece of material such as a slab to form a piece
of material having a desired cross section, for example, a
billet.
【Background Art】
15 [0002] When a metal plate according to the related art,
particularly, a thick plate, is cut, a gas torch has commonly
been used. When a metal plate is cut using a gas torch, an
oxidation reaction with oxygen may occur through the metal plate
being heated by the gas torch. Molten metal is generated in a
20 part heated by oxidation reaction heat, and the molten metal
flows downwardly due to gravity. Therefore, a gap between metal
plate portions is generated, ultimately cutting a metal plate.
[0003] In this case, molten metal flowing downwardly is
concentrated at a lower portion of a cut surface and a lower
25 surface and an edge part of a metal plate to form burrs. Such
Page 3
burrs may inevitably be formed in the case of melt cutting. In
addition, such a melting method is slow, and a cut surface may
contain defects due to impurities (inclusions) inside a slab,
while flatness may be defective due to thermal deformation. In
detail, in the case that a thickness of a cutting object 5 is
relatively thick, a large amount of heat is required. Therefore,
it is difficult to secure a rectangular cross section. In
addition, when a slab is cut to form a billet, secondary
processing of the formed billet may be required.
10 [0004] Thus, a mechanical cutting apparatus such as that
disclosed in Patent Document 1 has been proposed. In Patent
Document 1, a structure, in which a metal material having a
circular or polygonal cross section is clamped to be mounted
on a loading part, and subsequently, horizontal cutting is
15 performed thereon using a circular saw, has been proposed. To
this end, an electric motor for generating power, a box type
power transmission device installed above a lower frame
installed on a floor of a building to reduce the number of
revolutions per minute of an electric motor, a circular saw for
20 cutting a material while fixed to an output shaft of the power
transmission device to rotate at high speed, and the like are
included therein. In this case, a cutting material is located
in a position parallel to an axis of rotation of a circular saw.
[0005] In the case of Patent Document 1, high speed cutting
25 of a metal material having a small circular or polygonal cross
Page 4
section in a cross sectional direction may be performed. However,
since a direction of a cutting load applied to the circular saw
(cutting resistance acting in a gravity direction) is the same
as a transfer direction of the power transmission device having
a relatively heavy weight (a direction opposed to gravity), 5 a
large hydraulic cylinder is required, and thus, a size of a
cutter becomes large. In addition, performance of smooth upward
and downward linear movement may be difficult due to the weight,
or a quality of a cut surface may be degraded, due to vibrations
10 of a saw blade.
(Patent document 1) Korea Patent Laid-Open Publication
No. 2011-0035458
【Disclosure】
15 【Technical Problem】
[0006] An aspect of the present disclosure may provide a
cutting apparatus for cutting a cutting object a plurality of
times, and generating a cut object having a desired cross
section.
20 [0007] An aspect of the present disclosure may provide a
cutting apparatus and a cutting method for cutting a slab into
a billet having a length the same as that of the slab.
[0008] An aspect of the present disclosure may provide a
cutting apparatus and a cutting method, in which cutters having
Page 5
different cutting speeds cut materials continuously.
【Technical Solution】
[0009] To achieve the objective described above, a cutting
apparatus and a cutting method are 5 provided.
[0010] According to an aspect of the present disclosure, a
cutting apparatus includes: a supply part for supplying a
cutting object; a first cutting part for cutting the cutting
object provided by the supply part; a transfer part disposed
10 beyond the first cutting part to transfer an intermediate cut
object cut in the first cutting part; and a second cutting part
disposed beyond the transfer part to receive the intermediate
cut object provided by the transfer part to be cut. The first
cutting part and the second cutting part include a saw blade
15 member configured to be moved and rotated to cut the cutting
object or the intermediate cut object, and the saw blade member
includes a rotary shaft located above the cutting object or the
intermediate cut object.
[0011] The transfer part may include a rotating part for
20 receiving the intermediate cut object to be rotated to be
positioned to be perpendicular to a transfer direction, and a
surface cut by the first cutting part and a surface cut by the
second cutting part may intersect each other when viewed with
respect to the cutting object.
25 [0012] The first cutting part and the second cutting part may
Page 6
cut the cutting object in a direction perpendicular to the
transfer direction.
[0013] The first cutting part and the second cutting part may
include a prop member in which the cutting object or the
intermediate cut object is located on an upper surface, 5 , a frame
part supported on an upper surface of the prop member, and the
saw blade member moved along the frame part. The saw blade member
may be configured to rotate a saw blade in a front end in a moving
direction downwardly during cutting movement.
10 [0014] The first cutting part and the second cutting part may
include a spacing part installed rearwardly in a moving
direction of the saw blade member during cutting movement, and
for spacing a gap between cut surfaces by a predetermined
distance after the saw blade member passes.
15 [0015] The first cutting part and the second cutting part may
further include a fixing part for pressurizing the cutting
object or the intermediate cut object in a direction of the prop
member to be fixed thereto.
[0016] The transfer part may include a rotating part for
20 rotating an intermediate transferred object and a buffer part
for storing the intermediate transferred object, and the
rotating part and the buffer part may be sequentially disposed
in a transfer direction of the intermediate cut object.
[0017] The rotating part may include a support member for
25 supporting at least a lateral surface and a lower surface of
Page 7
the intermediate cut object, and a driving part connected to
the support member to move and rotate the support member.
[0018] The support member may include a plurality of support
plates disposed in a direction perpendicular to the transfer
direction of the intermediate cut object, and the driving 5 ving part
may include a first driving part for moving the support member
in a transfer direction of the intermediate transferred object,
and a second driving part for rotating the support member around
an axis disposed perpendicularly to a transfer direction.
10 [0019] According to another aspect of the present disclosure,
a cutting apparatus includes: a supply part for supplying a
cutting object; a first cutting part for cutting the cutting
object provided by the supply part; and a second cutting part
disposed beyond the first cutting part to receive an
15 intermediate cut object provided by the first cutting part to
be cut. A surface cut by the first cutting part and a surface
cut by the second cutting part intersect each other.
[0020] A transfer part disposed beyond the first cutting part
to transfer the intermediate cut object cut in the first cutting
20 part may be further included, and the transfer part may include
a rotating part for receiving the intermediate cut object to
be rotated to be positioned to be perpendicular to a transfer
direction.
[0021] The first cutting part and the second cutting part may
25 include a saw blade member configured to be moved and rotated
Page 8
to cut the cutting object or the intermediate cut object, and
the saw blade member may include a rotary shaft located above
the cutting object or the intermediate cut object.
[0022] The first cutting part may be located in a position
higher than that of the second cutting part, and 5 a height
difference between the first cutting part and the second cutting
part may be greater than a length in a transfer direction of
the intermediate cut object cut by at least the first cutting
part.
10 [0023] The transfer part may include a rotation transfer part
for rotating an intermediate transferred object and a buffer
part for storing the intermediate transferred object, and the
intermediate transferred object may be stacked to be disposed
in at least one of the buffer part and the rotation transfer
15 part.
[0024] The rotation transfer part and the buffer part may be
sequentially disposed, and the buffer part may be configured
to have a supply surface disposed in the same level as that of
a position in which a material of the second cutting part is
20 disposed.
[0025] The support plate of the support member may be
configured to have an L-shape, the support member may include
a bar for integrally connecting the support plate, the bar may
be connected to the first driving part and the second driving
25 part, and the bar may be connected to a guide part for guiding
Page 9
movement in a transfer direction due to the first driving part.
[0026] The guide part may include a pinion connected to an end
of the bar to be rotated by a bearing device, and a rack extended
in a transfer direction to be formed in a position corresponding
to that of the 5 pinion.
[0027] The supply part may include: a loading bed located
downwardly of the cutting object and having a concave and convex
configuration; a plurality of support rolls disposed in a convex
portion of the loading bed and disposed at regular intervals
10 in a width direction and a transfer direction of the cutting
object; and a pushing device disposed in a concave portion of
the loading bed and for pushing the cutting object toward the
first cutting part.
[0028] In the support roll, a distance between support rolls
15 in the transfer direction may gradually narrow toward the first
cutting part. On a bottom surface of the concave portion, a
sliding guide may be configured in a transfer direction, and
the pushing device may be configured to be moved along the
sliding guide.
20 [0029] According to another aspect of the present disclosure,
a cutting method includes: a supplying step of supplying a
cutting object; a first cutting step of cutting the cutting
object at regular intervals in a transfer direction; a rotating
step of rotating an intermediate cut object cut in the first
25 cutting step to be positioned to be perpendicular to a transfer
Page 10
direction; and a second cutting step of cutting the intermediate
cut object rotated at regular intervals in a transfer direction.
[0030] In the rotating step, the intermediate cut object may
be rotated 90 degrees to be positioned to be perpendicular to
a transfer 5 direction.
[0031] The rotating step may include: a first moving step of
receiving the intermediate cut object passing through the first
cutting step to be moved by a predetermined distance; an
intermediate rotating step of rotating the intermediate cut
10 object; and a second moving step of supplying the intermediate
cut object rotated to a second cutting step.
[0032] In the second moving step, a plurality of intermediate
cut objects may be pushed in a transfer direction while lateral
surfaces of the intermediate cut object surface-contact each
15 other, to move the plurality of intermediate cut objects
simultaneously.
[0033] The cutting method may further include a stacking step
of stacking the intermediate cut object rotated as a plurality
of layers after the intermediate rotating step. In the second
20 cutting step, the plurality of intermediate cut objects, which
are stacked, may be cut at the same time.
[0034] In the cutting method, the cutting object may be a slab
whose cross section is a rectangle, and, in the second cutting
step, the intermediate cut object may be cut to a billet whose
25 cross section is a rectangle smaller than that of the slab.
Page 11
【Advantageous Effects】
[0035] According to an exemplary embodiment in the present
disclosure, a cutting apparatus and a cutting method, capable
of cutting a cutting object a plurality of times to 5 manufacture
a cut object having a desired cross section, may be provided.
In detail, a cut object having a cut surface with a good shape
may be quickly provided using mechanical cutting, and a defect
may be less to improve yield.
10 [0036] According to an exemplary embodiment in the present
disclosure, a cutting apparatus and a cutting method, capable
of cutting a slab to a billet having the same length as that
of the slab, may be provided. In addition, a plurality of billets
may be continuously manufactured from a slab to significantly
15 improve productivity of a billet.
[0037] According to an exemplary embodiment in the present
disclosure, a cutting apparatus and a cutting method, allowing
for continuous cutting by cutters having different cutting
speeds, may be provided.
20
【Description of Drawings】
[0038] FIG. 1 is a perspective view of a cutting apparatus
according to an exemplary embodiment in the present disclosure.
[0039] FIG. 2 is a perspective view of a supply part of a cutting
25 apparatus according to an exemplary embodiment in the present
Page 12
disclosure.
[0040] FIG. 3 is a schematic view of a first cutting part of
a cutting apparatus according to an exemplary embodiment in the
present disclosure.
[0041] FIG. 4 is a perspective view of a rotating part 5 of a
transfer part of a cutting apparatus according to an exemplary
embodiment in the present disclosure.
[0042] FIGS. 5A to 5D are views when a rotating part of a
transfer part of a cutting apparatus according to an exemplary
10 embodiment in the present disclosure, is operating.
[0043] FIG. 6 is a perspective view of a buffer part of a
transfer part of a cutting apparatus according to an exemplary
embodiment in the present disclosure.
[0044] FIGS. 7A to 7E are views when a buffer part of a transfer
15 part of a cutting apparatus according to an exemplary embodiment
in the present disclosure, is operating.
[0045] FIG. 8 is a side view of a buffer part of a cutting
apparatus according to an exemplary embodiment in the present
disclosure.
20 [0046] FIG. 9 is a schematic view of a second cutting part of
a cutting apparatus according to an exemplary embodiment in the
present disclosure.
[0047] FIG. 10 is a schematic view of a cutting method according
to an exemplary embodiment in the present disclosure.
25 [0048] FIG. 11 is a flow chart of a cutting method according
Page 13
to an exemplary embodiment in the present disclosure.
[0049] FIG. 12 is a schematic view of a cutting method according
to another exemplary embodiment in the present disclosure.
[0050] FIG. 13 is a flow chart of a cutting method according
to another exemplary 5 embodiment in the present disclosure.
[0051] FIG. 14 is a schematic view of a cutting method according
to the other exemplary embodiment in the present disclosure.
[0052] FIG. 15 is a flow chart of a cutting method according
to the other exemplary embodiment in the present disclosure.
10
【Best Mode for Invention】
[0053] Hereinafter, exemplary embodiments of the present
disclosure will be described in detail with reference to the
accompanying drawings. The present disclosure may be variously
15 modified by referring to exemplary embodiments of the
accompanying drawings.
[0054] FIG. 1 is a perspective view illustrating an exemplary
embodiment of a cutting apparatus 1 in the present disclosure.
As shown in FIG. 1, the cutting apparatus 1 in the present
20 disclosure may include a supply part 100 for supplying a cutting
object S, for example, a slab, a first cutting part 200 for
cutting the cutting object S provided by the supply part 100,
a transfer part 300 disposed beyond the first cutting part 200
to transfer an intermediate cut object I cut in the first cutting
25 part 200, a second cutting part 600 disposed beyond the transfer
Page 14
part 300 to receive the intermediate cut object I provided by
the transfer part 300 to be cut, and a discharge part 700 for
transferring and discharging a cut object B cut in the second
cutting part 600. The supply part 100, the first cutting part
200, the transfer part 300, the second cutting part 600, 5 , the
discharge part 700 may be sequentially disposed in a transfer
direction of the cutting object S.
[0055] The first cutting part 200 and the second cutting part
600 may include saw blade members 230 and 630 configured to be
10 moved and rotated to cut the cutting object S or the intermediate
cut object I, and the saw blade members 230 and 630 include rotary
shafts located above the cutting object S or the intermediate
cut object I.
[0056] The supply part 100 may include a pushing bar 140
15 abutting on the cutting object S to supply the cutting object
S to the first cutting part 200 and a pushing device 130 connected
thereto, and the pushing device 130 may be installed in a concave
portion 111 of a loading bed 110 in a concave and convex
configuration. Meanwhile, a support roll 150 may be formed in
20 a convex portion of the loading bed 110 to support the cutting
object S. Thus, the cutting object S may be moved to the first
cutting part 200 through the pushing device 130 while supported
on the support roll 150.
[0057] The first cutting part 200 and the second cutting part
25 600 have basic configurations similar to each other in an
Page 15
exemplary embodiment. The first cutting part 200 and the second
cutting part 600 may include prop members including rolls and
disposed below the cutting object S, frame parts 210 and 610
supported on upper surfaces of the prop members, and the saw
blade members 230 and 630 moved along the frame parts 5 ts 210 and
610. The saw blade members 230 and 630 may be connected to first
driving parts 220 and 620 to be rotated, and connected to second
driving parts 240 and 640 to be moved back and forth in a
direction perpendicular to a transfer direction of the cutting
10 object S. The first driving parts 220 and 620 allow saw blades
in front ends in a moving direction during cutting movement of
the saw blade members 230 and 630, to be rotated downwards.
[0058] A fixing part 250 for pressurizing the cutting object
S near the saw blade members 230 and 630 in a transfer direction
15 of the cutting object S to be fixed may be disposed forwards
in a moving direction of the saw blade members 230 and 630. The
fixing part 250 may pressurize the cutting object S in a
direction of a prop member to prevent the cutting object S from
moving/vibrating.
20 [0059] Meanwhile, in an external frame of the first cutting
part 200 and the second cutting part 600, a spacing part, in
which an end is fixed to allow cross sections, cut as the saw
blade members 230 and 630 pass therethrough, to be spaced from
each other, and for pushing a wedge part to a cut surface of
25 the cutting object S, may be disposed therein.
Page 16
[0060] The first cutting part 200 may cut the cutting object
S at regular intervals in a direction perpendicular to a
transfer direction. In this case, a cutting interval may
correspond to a length of a cross section of the cut object B.
In addition, the second cutting part 600 may also 5 o cut the
intermediate cut object I at regular intervals in a direction
perpendicular to a transfer direction of an intermediate cut
object. In this case, a cutting interval may correspond to a
width of a cross section of the cut object B. Thus, when a billet
10 having a square cross section is formed, the first cutting part
200 and the second cutting part 600 may perform cutting at equal
intervals.
[0061] The transfer part 300 including a rotating part 400 for
rotating the intermediate cut object I to be positioned to be
15 perpendicular to a transfer direction may be disposed between
the first cutting part 200 and the second cutting part 600.
[0062] The rotating part 400 may include a support member 430
for supporting at least a lateral surface and a lower surface
of the intermediate cut object I passing through the first
20 cutting part 200, and a driving part connected to the support
member 430 to move and rotate the support member 430. The
rotating part 400 may allow the intermediate cut object I to
be rotated so as to allow a cut surface cut by the first cutting
part 200 and a cut surface cut by the second cutting part 600
25 to intersect each other when viewed with respect to the cutting
Page 17
object S. In other words, the first cutting part 200 may
determine a length of a cross section of the cut object B, and
the second cutting part 600 may determine a width of a cross
section of the cut object B.
[0063] The transfer part 300 may include a buffer part 5 500
following the rotating part 400. The buffer part 500 may have
a space, in which a plurality of intermediate cut objects I may
be placed, to prevent the intermediate cut object I from not
being supplied or from being accumulated due to a difference
10 between cutting speeds of the first cutting part 200 and the
second cutting part 600. The buffer part 500 may include a plate
for moving a plurality of intermediate cut objects
simultaneously and a driving part 540 connected thereto.
[0064] The intermediate cut object I passing through the
15 transfer part 300 may be cut by the second cutting part 600 once
more. A configuration of the second cutting part 600 may be
similar to that of the first cutting part 200. However, since
the second cutting part cuts an intermediate cut object I having
a thickness thinner than that of a cutting object cut by the
20 first cutting part 200 in an exemplary embodiment, a diameter
of the saw blade member 630 of the second cutting part 600 is
smaller than a diameter of the saw blade member 230 of the first
cutting part 200.
[0065] The cut object B cut through the second cutting part
25 600 may be discharged by the discharge part 700. A transfer part
Page 18
for additional cutting may be disposed in a position of the
discharge part 700, and the discharge part 700 is disposed in
rear ends of the first cutting part 200 and the second cutting
part 600 in an exemplary embodiment.
[0066] With reference to FIGS. 2 to 9, a configuration of t5 he
cutting apparatus 1 according to an exemplary embodiment in the
present disclosure will be described in more detail. FIG. 2 is
a perspective view illustrating the supply part 100 of the
cutting apparatus 1 according to an exemplary embodiment in the
10 present disclosure, FIG. 3 is a schematic view illustrating the
first cutting part 200 of the cutting apparatus 1 according to
an exemplary embodiment in the present disclosure, FIG. 4 is
a perspective view illustrating the rotating part 400 of the
transfer part 300 of the cutting apparatus 1 according to an
15 exemplary embodiment in the present disclosure, FIGS. 5A to 5D
are views illustrating the rotating part 400, which is operating,
of the transfer part 300 of the cutting apparatus 1 according
to an exemplary embodiment in the present disclosure, FIG. 6
is a perspective view illustrating the buffer part 500 of the
20 transfer part 300 of the cutting apparatus 1 according to an
exemplary embodiment in the present disclosure, FIGS. 7A to 7E
are views illustrating the buffer part 500, which is operating,
of the transfer part 300 of the cutting apparatus 1 according
to an exemplary embodiment in the present disclosure, FIG. 8
25 is a side view illustrating the buffer part 500 of the cutting
Page 19
apparatus 1 according to an exemplary embodiment in the present
disclosure, and FIG. 9 is a schematic view illustrating the
second cutting part 600 of the cutting apparatus 1 according
to an exemplary embodiment in the present disclosure.
[0067] As shown in FIG. 2, in the supply part 100 of the 5 cutting
apparatus 1 according to an exemplary embodiment in the present
disclosure, in order to apply uniform supporting force while
a cutting object S such as a heavy slab is moved and in order
to prevent a defect caused by friction from occurring in a
10 surface of a cutting object, support rolls 150 to 156 simply
rotating by friction with a lower surface of a slab without a
separate driving device are intermittently disposed in a width
direction of a cutting object. The support roll 150 is supported
by a rotary shaft 151a fixed to an upper part of the loading
15 bed 110 in a concave and convex configuration in a longitudinal
direction of the cutting object S. In this case, the number of
convex portions of the concave and convex configuration of the
loading bed 110 may be at least two, within a minimum length
of the cutting object S to be cut.
20 [0068] In addition, as primary cutting with respect to a single
cutting object S is performed, a width of the cutting object
is gradually decreased. In order to prevent a narrow cutting
object S from falling between support rolls 151 to 155 while
the narrow cutting object is loaded to the first cutting part
25 200, center distances between support rolls 150 to 156 located
Page 20
in the same row of the loading bed 110 may become shorter toward
the first cutting part 200.
[0069] In addition, the supply part 100 may include a pushing
device 130 using a pushing bar 140 moving above a sliding guide
120 disposed between concave-convex portions of the loading 5 ading bed
110, and a hydraulic cylinder 131, in order to move the cutting
object S as much as a cutting dimension (a length Hb of a cross
section of a cut object to be manufactured) while a longitudinal
direction of the cutting object S is always parallel to a cutting
10 direction (an advancing direction of a circular saw center).
The pushing device may push the cutting object S to the first
cutting part 200 while a cylinder rod 132 is connected to the
pushing bar 140 and the cylinder rod 132 is moved along with
the pushing bar 140. In an exemplary embodiment, the sliding
15 guide 120 and the pushing bar 140 are used, but an additional
lubricant supply device and an LM guide structure may be
included therein for slippery movement without a noise.
[0070] As shown in FIGS. 3 and 9, the first cutting part 200
and the second cutting part 600 have the same structure as
20 described above. Reference to configurations of the first
cutting part 200 and the second cutting part 600 is made to Korean
Patent Application No. 2013-0111619 of the present applicant.
[0071] The circular saw blade members 230 and 630 for allowing
a saw blade, in a front end in a moving direction during cutting
25 movement, to perform a rotary cutting motion downwardly near
Page 21
an upper part of the cutting object S or the intermediate cut
object I in order to easily discharge a chip generated during
cutting, to prevent a material from flying during cutting, and
reducing a cutting load; a vibration damping device 235 disposed
parallel to the saw blade members 230 and 630 to prevent a 5 saw
from vibrating due to a cutting load, and to cool a cut surface
of a material and a saw blade at the same time; a first driving
part 220 having a deceleration device for transmitting power
from rotation motors 221 and 621 for rotation of the saw blade
10 members 230 and 630, and in close contact with frames 210 and
610 to support the saw blade members 230 and 630; and a rotary
bar 242 to transfer rotation of the second driving part 240 to
allow the first driving part 220 to be moved horizontally, so
as to horizontally move the first driving part 220 at high speed
15 in a cutting direction, may be included.
[0072] In addition, a spacing part 260 including a hydraulic
cylinder 261 for preventing the saw blade members 230 and 630
from being inserted into cut surfaces during cutting, a cylinder
rod 262, and a wedge-shaped metal plate 263 connected thereto,
20 may be included.
[0073] Meanwhile, while a bottom surface of the cutting object
S is supported using a pressurization plate 253 whose vertical
position is fixed in order to fix movement of the cutting object
S during cutting, the fixing part 250 in a circular or
25 plate-shaped form including a plurality of hydraulic cylinders
Page 22
251, a cylinder rod 252, and the pressurization plate 253 to
vertically press an upper part of the cutting object S may be
included.
[0074] The transfer part 300 located in the opposite side of
the supply part 100 in the first cutting part 200 may 5 ay include
the rotating part 400 for rotating an intermediate cut object
I, which is cut after the cutting object S is width cut, 90
degrees in a direction perpendicular to a transfer direction,
in other words, in a longitudinal direction of the intermediate
10 cut object I as an axis of rotation, and the buffer part 500
for sequentially moving the intermediate cut object I by a
transferring device while a plurality of intermediate cut
objects I are located between the first cutting part 200 and
the second cutting part 600, so as to allow the first cutting
15 part 200 and the second cutting part 600 to cut a material without
rest.
[0075] The rotating part 400 may include the first driving part
420 and the second driving part 440 for transferring the
intermediate cut object I and rotating the intermediate cut
20 object I 90 degrees. The rotating part 400 may include a bed
410, the second driving part 440 located on the bed 410 and
connected to the support member 430 to move the support member
430 in a transfer direction, a bar 422 connected to the second
driving part 440 to be extended in a longitudinal direction of
25 the intermediate cut object I, the support member 430 including
Page 23
a support plate connected to the bar 422, and the first driving
part 420 connected to an end of the bar to rotate the bar 422
so as to rotate the support member 430.
[0076] The bar 422 may include a connected part 443 connected
to the second driving part 440, and a guide part for 5 guiding
the support member 430 not to be rotated due to movement of the
second driving part 440 may be connected thereto. The guide part
may include a bearing 425, a pinion gear 427 connected thereto,
and the bed 410, and a rack, on which the pinion gear 427 is
10 mounted, installed on the bed 410. However, the guide part may
have a different structure.
[0077] The support member 430 may include a support plate in
which a plurality of intermediate cut objects I are disposed
in a longitudinal direction, and the support plate may include
15 a lateral surface supporting surface 431 for supporting a
lateral surface in a transfer direction of the intermediate cut
object I and a lower surface supporting surface 432 for
supporting a lower surface, to have a substantially L-shape.
A through hole 434, through which the bar 422 passes, may be
20 formed in an intersection of the lateral surface supporting
surface 431 and the lower surface supporting surface 432. In
addition, the support plate may include an inclined surface 433
formed in an end of the lower surface supporting surface 432
to prevent interference with the intermediate cut object I or
25 the saw blade member 230 from occurring when the support plate
Page 24
is rotated.
[0078] As continuously illustrated in FIGS. 5A to 5D, the
rotating part 400 may perform reciprocating linear motion and
rotational motion for transfer and for 90 degree rotation of
the intermediate cut object I. While the support member 430 5 is
in contact with an end of the cutting object S, the first cutting
part 200 cuts the cutting object. Through the first driving part
420 and the second driving part 440, the intermediate cut object
I which is cut may be rotated and transferred at the same time,
10 or may be rotated after being transferred, or may be transferred
after being rotated. In an exemplary embodiment of the present
disclosure, a position of a lower surface of a material in the
first cutting part 200 may be higher than a position of a lower
surface of a material in the second cutting part 600. As shown
15 in FIG. 5D, after the intermediate cut object is rotated, the
intermediate cut object I is placed on a support roll 450 to
be slid down by gravity, whereby transfer between the rotating
part and the buffer part may be achieved without a special
transferring device. In addition, as a difference in a height
20 between them is greater than a length in a transfer direction
of the intermediate cut object cut by the first cutting part
200, the intermediate cut object I may be stacked.
[0079] The buffer part 500 may include a space in which a
plurality of intermediate cut objects I are disposed and a
25 support member 530 moved in the space. The support member 530
Page 25
may include a support plate 531 provided as a plurality of
support plates disposed in a longitudinal direction of the
intermediate cut object I, a bar 522 for connecting the support
plate 531, a second driving part 520 connected to an end of the
bar 522 to rotate the bar 522, and a first 5 driving part 540
connected to an end of the bar 522 to move the bar 522 in a
transfer direction.
[0080] In the support plate 531, both ends of an upper surface
are formed of inclined surfaces 532 and 533 to prevent
10 interference with the intermediate cut object I, and a flat
supporting surface 535 is formed between the inclined surfaces
532 and 533. The supporting surface 535 may be in contact with
the intermediate cut object I due to rotation of the bar 522,
and the first driving part 540 is operated while the supporting
15 surface is in contact with the intermediate cut object, to push
the intermediate cut object I, in detail, a plurality of
intermediate cut objects I simultaneously.
[0081] In an exemplary embodiment, the supporting surface 535
having a length corresponding to a thickness of a single layer
20 is illustrated, as a single layer intermediate cut object I
without stacking is pushed. However, when a plurality of
intermediate cut objects I are pushed, a length of the
supporting surface 535 may be longer.
[0082] As illustrated in FIG. 7, while the support plate 531
25 is moved by a first driving part and a second driving part
Page 26
downwardly of the intermediate cut object I and rotated due to
operation of the second driving part 520 rearwards the
intermediate cut object I, the supporting surface 535 is in
contact with a rear lateral surface of the intermediate cut
object I. Thereafter, the intermediate cut object I is move5 d
with a driving force of the first driving part 540. After
movement is completed, the support plate returns to a state in
FIG. 7A again, and waits for a next intermediate cut object I.
[0083] FIG. 8 is a side view illustrating the buffer part 500,
10 which is an exemplary embodiment of moving an intermediate cut
object I by not a support member 530 but a different driving
device. The intermediate cut object I may be moved not by moving
the support member 530, but by rotating a support roll 550 by
a driving device (not shown) as the support roll 550 for
15 supporting the intermediate cut object I is connected to the
driving device by a chain 560. In a manner different therefrom,
movement of the intermediate cut object I may be achieved by
a different driving device. In this case, a distance (Ec)
between centers of support rolls 550 is shorter than a width
20 Hs of the intermediate cut object I, which may prevent the
intermediate cut object I from being falling down into a gap
between the support rolls 550.
[0084] FIGS. 10 and 11 illustrate a cutting method according
to an exemplary embodiment in the present disclosure. As shown
25 in FIG. 10, width cutting with respect to a cutting object S
Page 27
is performed. After an intermediate cut object is rotated 90
degrees by a device such as the rotating part 400, the
intermediate cut object is transferred to be cut. Through a
cutting method described above, a slab having a large
rectangular cross section may be cut to a billet 5 having a
rectangular cross section having the same length as that of the
slab, but smaller than that of the slab.
[0085] As illustrated in FIG. 11, a slab is loaded (S100), the
slab is clamped by a fixing device such as a fixing part 250
10 (S110), the slab is width cut by a cutting apparatus such as
a saw blade member 230 (S120), the slab turned into an
intermediate material is rotated (S130), the intermediate
material is sequentially transferred (S140), the intermediate
material is clamped (S150) and then cut by an additional cutting
15 apparatus such as a second cutting part 600 (S160). Through
width cutting a slab (S120) and thickness cutting a slab (S160),
a slab having a large rectangular cross section may be processed
to a billet having a rectangular or square cross section smaller
than that of the slab. When lengths (Lb, Ls) of a billet and
20 a slab are the same (Lb = Ls), the number of billets Ns to be
continuously manufactured from a single slab may be determined
by the following equation, and a plurality of billets may be
continuously manufactured from a single slab.
[0086] Nn = 2 (Ws+t)/(Hb +t)
25 [0087] Here, Ws is a width of a slab, Hb is a length of a cross
Page 28
section of a rectangular billet, and t is a thickness of a saw
blade of a saw blade member.
[0088] Alternatively, when a length of a billet is the same
as a width of a slab (Lb = Ws), the number of billets Ns to be
continuously manufactured from a single slab may be 5 determined
by the following equation.
[0089] Ns = 2 (Ls+t)/(Hb +t)
[0090] According to an exemplary embodiment in the present
disclosure, a case, in which a length of a cross section of a
10 billet is 1/2 of a thickness of a slab, is assumed to be described
for convenience of explanation, but an exemplary embodiment is
not limited thereto and variously modified. In addition,
lengths of billets to be manufactured may be different.
[0091] FIGS. 12 and 13 illustrate another cutting method, and
15 FIGS. 14 and 15 illustrate the other cutting method.
[0092] In the case of FIGS. 12 and 13, the beginning is the
same as the case of FIGS. 10 and 11, but it differs in that,
in the middle, rotating (S230) and then stacking (S240),
transferring (S250) thereafter, and clamping (S260) and
20 thickness cutting a slab (S270) are performed while stacked.
As described above, since cutting is performed while stacked,
four billets may be manufactured at the same time in the second
cutting part 600. In this case, stacking with a height
difference between the first cutting part 200 and the second
25 cutting part 600 is advantageous in that stacking without an
Page 29
additional configuration may be performed. However, the height
difference therebetween is not necessarily required. In case
of need, a configuration, in which an intermediate material is
raised to be stacked, may be included.
[0093] In the case of FIGS. 14 and 15, the beginning is 5 the
same as the case of FIGS. 12 and 13 until rotating (S330), but
it differs in terms of not immediately stacking but stacking
(S350) after transferring a rotated intermediate material (S340)
and before clamping (S360).
10 [0094] While exemplary embodiments with respect to a cutting
apparatus and a cutting method have been shown and described
above, it will be apparent to those skilled in the art that
modifications and variations could be made without departing
from the scope of the present invention as defined by the
15 appended claims.
Page 30
【WE CLAIM】
【Claim 1】
A cutting apparatus comprising:
a supply part for 5 supplying a cutting object;
a first cutting part for cutting the cutting object
provided by the supply part;
a transfer part disposed beyond the first cutting part
to transfer an intermediate cut object cut in the first cutting
10 part; and
a second cutting part disposed beyond the transfer part
to receive the intermediate cut object provided by the transfer
part to be cut,
wherein the first cutting part and the second cutting part
15 include a saw blade member configured to be moved and rotated
to cut the cutting object or the intermediate cut object, and
the saw blade member includes a rotary shaft located above
the cutting object or the intermediate cut object.
20 【Claim 2】
The cutting apparatus of claim 1, wherein the transfer
part includes a rotating part for receiving the intermediate
cut object to be rotated to be positioned to be perpendicular
to a transfer direction, and
25 a surface cut by the first cutting part and a surface cut
Page 31
by the second cutting part intersect each other when viewed with
respect to the cutting object.
【Claim 3】
The cutting apparatus of claim 2, wherein the 5 first
cutting part and the second cutting part cut the cutting object
in a direction perpendicular to the transfer direction.
【Claim 4】
10 The cutting apparatus of claim 3, wherein the first
cutting part and the second cutting part include a prop member
in which the cutting object or the intermediate cut object is
located on an upper surface, a frame part supported on an upper
surface of the prop member, and the saw blade member moved along
15 the frame part.
【Claim 5】
The cutting apparatus of claim 4, wherein the saw blade
member is configured to rotate a saw blade in a front end in
20 a moving direction downwardly during cutting movement.
【Claim 6】
The cutting apparatus of claim 4, wherein the first
cutting part and the second cutting part include a spacing part
Page 32
installed rearwardly in a moving direction of the saw blade
member during cutting movement, and for spacing a gap between
cut surfaces by a predetermined distance after the saw blade
member passes.
5
【Claim 7】
The cutting apparatus of claim 5, wherein the first
cutting part and the second cutting part further include a
fixing part for pressurizing the cutting object or the
10 intermediate cut object in a direction of the prop member to
be fixed thereto.
【Claim 8】
The cutting apparatus of claim 2, wherein the transfer
15 part includes a rotating part for rotating an intermediate
transferred object and a buffer part for storing the
intermediate transferred object.
【Claim 9】
20 The cutting apparatus of claim 8, wherein the rotating
part and the buffer part are sequentially disposed in a transfer
direction of the intermediate cut object.
【Claim 10】
Page 33
The cutting apparatus of claim 8, wherein the rotating
part includes a support member for supporting at least a lateral
surface and a lower surface of the intermediate cut object, and
a driving part connected to the support member to move and rotate
the support 5 member.
【Claim 11】
The cutting apparatus of claim 10, wherein the support
member includes a plurality of support plates disposed in a
10 direction perpendicular to the transfer direction of the
intermediate cut object, and
the driving part includes a first driving part for moving
the support member in a transfer direction of the intermediate
transferred object, and a second driving part for rotating the
15 support member around an axis disposed perpendicularly to a
transfer direction.
【Claim 12】
A cutting apparatus comprising:
20 a supply part for supplying a cutting object;
a first cutting part for cutting the cutting object
provided by the supply part; and
a second cutting part disposed beyond the first cutting
part to receive an intermediate cut object provided by the first
25 cutting part to be cut,
Page 34
wherein a surface cut by the first cutting part and a
surface cut by the second cutting part intersect each other.
【Claim 13】
The cutting apparatus of claim 12, further 5 comprising:
a transfer part disposed beyond the first cutting part
to transfer the intermediate cut object cut in the first cutting
part,
wherein the transfer part includes a rotating part for
10 receiving the intermediate cut object to be rotated to be
positioned to be perpendicular to a transfer direction.
【Claim 14】
The cutting apparatus of claim 12, wherein the first
15 cutting part and the second cutting part include a saw blade
member configured to be moved and rotated to cut the cutting
object or the intermediate cut object, and
the saw blade member includes a rotary shaft located above
the cutting object or the intermediate cut object.
20
【Claim 15】
The cutting apparatus of claim 3 or claim 14, wherein the
first cutting part is located in a position higher than that
of the second cutting part,
25 a height difference between the first cutting part and
Page 35
the second cutting part is greater than a length in a transfer
direction of the intermediate cut object cut by at least the
first cutting part.
【Claim 165 】
The cutting apparatus of claim 15, wherein the transfer
part includes a rotation transfer part for rotating an
intermediate transferred object and a buffer part for storing
the intermediate transferred object, and
10 the intermediate transferred object is stacked to be
disposed in at least one of the buffer part and the rotation
transfer part.
【Claim 17】
15 The cutting apparatus of claim 16, wherein the rotation
transfer part and the buffer part are sequentially disposed,
and
the buffer part is configured to have a supply surface
disposed in the same level as that of a position in which a
20 material of the second cutting part is disposed.
【Claim 18】
The cutting apparatus of claim 11, wherein the support
plate is configured to have an L-shape,
25 the support member includes a bar for integrally
Page 36
connecting the support plate,
the bar is connected to the first driving part and the
second driving part, and
the bar is connected to a guide part for guiding movement
5 in a transfer direction due to the first driving part.
【Claim 19】
The cutting apparatus of claim 18, wherein the guide part
includes a pinion connected to an end of the bar to be rotated
10 by a bearing device, and a rack extended in a transfer direction
to be formed in a position corresponding to that of the pinion.
【Claim 20】
The cutting apparatus of claim 1 or claim 12, wherein the
15 supply part includes: a loading bed located downwardly of the
cutting object and having a concave and convex configuration;
a plurality of support rolls disposed in a convex portion of
the loading bed and disposed at regular intervals in a width
direction and a transfer direction of the cutting object; and
20 a pushing device disposed in a concave portion of the loading
bed and for pushing the cutting object toward the first cutting
part.
【Claim 21】
25 The cutting apparatus of claim 20, wherein, in the support
Page 37
roll, a distance between support rolls in the transfer direction
gradually narrows toward the first cutting part.
【Claim 22】
The cutting apparatus of claim 20, wherein, on 5 a bottom
surface of the concave portion, a sliding guide is configured
in a transfer direction, and the pushing device is configured
to be moved along the sliding guide.
10 【Claim 23】
A cutting method comprising:
a supplying step of supplying a cutting object;
a first cutting step of cutting the cutting object at
regular intervals in a transfer direction;
15 a rotating step of rotating an intermediate cut object
cut in the first cutting step to be positioned to be
perpendicular to a transfer direction; and
a second cutting step of cutting the intermediate cut
object rotated at regular intervals in a transfer direction.
20
【Claim 24】
The cutting method of claim 23, wherein, in the rotating
step, the intermediate cut object is rotated 90 degrees to be
positioned to be perpendicular to a transfer direction.
25
Page 38
【Claim 25】
The cutting method of claim 23, wherein the rotating step
includes:
a first moving step of receiving the intermediate cut
object passing through the first cutting step to be 5 moved by
a predetermined distance;
an intermediate rotating step of rotating the
intermediate cut object; and
a second moving step of supplying the intermediate cut
10 object rotated to a second cutting step.
【Claim 26】
The cutting method of claim 25, wherein, in the second
moving step, a plurality of intermediate cut objects are pushed
15 in a transfer direction while lateral surfaces of intermediate
cut objects surface-contact each other, to move the plurality
of intermediate cut objects simultaneously.
【Claim 27】
20 The cutting method of claim 25, further comprising a
stacking step of stacking the intermediate cut object rotated
as a plurality of layers after the intermediate rotating step.
【Claim 28】
Page 39
The cutting method of claim 27, wherein, in the second
cutting step, the plurality of intermediate cut objects, which
are stacked, are cut at the same time.
【Claim 29 】
The cutting method of one of claim 23 to claim 28, wherein
the cutting object is a slab whose cross section is a rectangle,
and, in the second cutting step, the intermediate cut object
is cut to a billet whose cross section is a rectangle smaller
10 than that of the slab.