CA1083015A - Apparatus for sawing stone - Google Patents
Apparatus for sawing stoneInfo
- Publication number
- CA1083015A CA1083015A CA326,813A CA326813A CA1083015A CA 1083015 A CA1083015 A CA 1083015A CA 326813 A CA326813 A CA 326813A CA 1083015 A CA1083015 A CA 1083015A
- Authority
- CA
- Canada
- Prior art keywords
- saw blades
- stone block
- truck
- cut
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
This invention relates to improved apparatus for sawing stone blocks. A number of rotary saw blades are arranged in series in the cutting plane of the blades with the cutting depth of each blade being successively deeper to cut the blocks to a predetermined depth. Each block is fed past the blades on a work carrier truck and after it is partially cut, reversing apparatus turns it over on the truck. The truck is then again passed by the rotary blades and the cut is completed from the other side of the block. This has the advantage of reducing the depth of each cut and thus speeding up the cutting operation.
This invention relates to improved apparatus for sawing stone blocks. A number of rotary saw blades are arranged in series in the cutting plane of the blades with the cutting depth of each blade being successively deeper to cut the blocks to a predetermined depth. Each block is fed past the blades on a work carrier truck and after it is partially cut, reversing apparatus turns it over on the truck. The truck is then again passed by the rotary blades and the cut is completed from the other side of the block. This has the advantage of reducing the depth of each cut and thus speeding up the cutting operation.
Description
:~8~01S
1 This is a Divi5ional of application Serial Number 275,773 filed April 6, 1977.
The present invention relates to an apparatus for sawing a stone block, and more particularly to such apparatus -for severing it into a plurality of slabs.
Recentl~, there has been an increased demand for slabs of stone such as marble, granite and the like to be used for flooring, walling and the like. Conventionally the stone blocks cut at the mine or quarry are transferred to the processing factory where said stone block is severed into a plurality of slabs which may be finished by grinding.
In such factory there is provided a work bed on which the stone block is fixedly laid, onto which a rotary cutting wheel having a peripheral portion embedded with finely divided particles o any hard material such as diamond is manually pressed downwards and forwards. When the saw blade has been advanced along the stone block length to the opposite side with having cut it by some depth, then it is retractad to the intial position for repeating the advance-cutt:ing works. During the repeated reciprocal travels of the rotary cutting wheel along `~
the length of the stone block, the cutting depth is gradually deepened to complete the cutting work. Such method has ~een adopted widely and for a long time despite that the retractive travels of the saw is obviously inefficient for the cutting work. It is not always impossible of course to cut ~he stone block in a breath, namely without repeating said r~ciprocal travels of the saw, butthe feeding rate of the saw must be considerably slowed down in view of incrementally increased resistance.
An object of the present invention is, thus, to provide-::
' .
:1~83~
1 an apparatus for successively and effectively sawing the stone block to be cut into a plurality of slabs.
S~id and other objects as well as various advantages of the invention to be readily appreciated by studying the following explanation can be attained fundamentally by providing a plurality of saw blades arranged in series in the cutting plane of the saws of which cutting depth is made deeper step-wisedly from the first saw to the last one, and means for successively feeding a plurality of stone blocks one by one on the work table towards the saws.
Some preferred embodiments of the invention shall be explained in reference to the accompanying drawings; in which: `
Fig. 1 is a schematic fragmentary side elevation of the first embodiment;
Fig. 2 is a schematic fragmentary top plan view of the above embodiment with cutting out the top casing frame for showing the arrangement of the saws;
Fig. 3 is a view similar to Fig. 1 but of a modification ~ -of the above embodiment; ~ ~ !
Fig. 4 is a schematic side elevation of means ~or successively feeding the stone blocks one by one towards ~he `~
saws and of auxiliary means for feeding said stone blocks during a new stone block is being supplied and said main feeding means is unactuated status, Fig. 5 is a schematic side elevation similar to Fig. 1 i but with a different feeding means Fig. 6 is a view similar to Fig. 5 but with a further different feeding means, and Fig. 7 is a schematic perspective view of a means for 3Q turning the stone block around to be used for the feeding means shown in Fig. 6. ;~ ~-
1 This is a Divi5ional of application Serial Number 275,773 filed April 6, 1977.
The present invention relates to an apparatus for sawing a stone block, and more particularly to such apparatus -for severing it into a plurality of slabs.
Recentl~, there has been an increased demand for slabs of stone such as marble, granite and the like to be used for flooring, walling and the like. Conventionally the stone blocks cut at the mine or quarry are transferred to the processing factory where said stone block is severed into a plurality of slabs which may be finished by grinding.
In such factory there is provided a work bed on which the stone block is fixedly laid, onto which a rotary cutting wheel having a peripheral portion embedded with finely divided particles o any hard material such as diamond is manually pressed downwards and forwards. When the saw blade has been advanced along the stone block length to the opposite side with having cut it by some depth, then it is retractad to the intial position for repeating the advance-cutt:ing works. During the repeated reciprocal travels of the rotary cutting wheel along `~
the length of the stone block, the cutting depth is gradually deepened to complete the cutting work. Such method has ~een adopted widely and for a long time despite that the retractive travels of the saw is obviously inefficient for the cutting work. It is not always impossible of course to cut ~he stone block in a breath, namely without repeating said r~ciprocal travels of the saw, butthe feeding rate of the saw must be considerably slowed down in view of incrementally increased resistance.
An object of the present invention is, thus, to provide-::
' .
:1~83~
1 an apparatus for successively and effectively sawing the stone block to be cut into a plurality of slabs.
S~id and other objects as well as various advantages of the invention to be readily appreciated by studying the following explanation can be attained fundamentally by providing a plurality of saw blades arranged in series in the cutting plane of the saws of which cutting depth is made deeper step-wisedly from the first saw to the last one, and means for successively feeding a plurality of stone blocks one by one on the work table towards the saws.
Some preferred embodiments of the invention shall be explained in reference to the accompanying drawings; in which: `
Fig. 1 is a schematic fragmentary side elevation of the first embodiment;
Fig. 2 is a schematic fragmentary top plan view of the above embodiment with cutting out the top casing frame for showing the arrangement of the saws;
Fig. 3 is a view similar to Fig. 1 but of a modification ~ -of the above embodiment; ~ ~ !
Fig. 4 is a schematic side elevation of means ~or successively feeding the stone blocks one by one towards ~he `~
saws and of auxiliary means for feeding said stone blocks during a new stone block is being supplied and said main feeding means is unactuated status, Fig. 5 is a schematic side elevation similar to Fig. 1 i but with a different feeding means Fig. 6 is a view similar to Fig. 5 but with a further different feeding means, and Fig. 7 is a schematic perspective view of a means for 3Q turning the stone block around to be used for the feeding means shown in Fig. 6. ;~ ~-
-2- i~
'~
:
l33~)~5 1 In Figs. 1 and 2 illus-tratiny the first embodiment of the inve~tion, three stone blocks lA, lB and lC, each being a granite block from Inada District and oE dimensions of 20 cm width, 30 cm height and 120 cm length, are longitudinally laid on a work bed 2 following one after another. The first work piece lA fragmentarily illustrated is urged towards the left in the drawing at the trailing end thereof by means of a push member
'~
:
l33~)~5 1 In Figs. 1 and 2 illus-tratiny the first embodiment of the inve~tion, three stone blocks lA, lB and lC, each being a granite block from Inada District and oE dimensions of 20 cm width, 30 cm height and 120 cm length, are longitudinally laid on a work bed 2 following one after another. The first work piece lA fragmentarily illustrated is urged towards the left in the drawing at the trailing end thereof by means of a push member
3 fixed at the free end of a piston 4 to be cooperatad with a cylinder 5 of the hydraulic pressure apparatus so that the work pieces lB and lC also are urgingly fed towards the left on said work bed 2. It is preferable for the work bed 2 to have a plurality of longitudinal slits 2' by reason to be readily appreciated.
As the first step, there are provided twelve saw blades lOA, each of 50 cm diameter, mounted on a shaft transversely extended from a gearing casing 12A and driven by an electric motor 13A of 75 h.p. Said saw blades lOA are each equally separated from the adjacent one by a spacer llA of which thickness is adapted to comply with the desired thickness of the slab. The casing 12A is suspended from a machine frame 14 to be adjustable in the level.
The above is just applied to the second and thixd saw groups lOB and lOC, except that the diameter of each saw blade of the last group lOC is of 64 cm. As a matter of course, the dimension of these saw blades is not critical. In view of three groups of saws provided in this embodiment, the level oE each ;~
saw group is so adjusted that the first lOA may cut the stone block by about 10 cm depth or a third, the second lOB into about 20 cm depth or two thirds, and the third lOC through the total `
thickness of 30 cm. In view of that the first and second saw ~ .
~ "
S
1 blades are both of 50 cm diameter, the casing 12A is set higher than the casing 12~ By feeding the s-tone blocks at a rate of 5 c~/min. about llm oE cu-ttiny ability could be reali~ed.
In reference to Fiy. 3, there are provided two additional saw groups lOD and lOE each rotatinyly mounted on the output shaft of the geariny casiny upstanding on a lower machin~
frame 14' so as to be arranyed under said saw groups lOA and lOB. hvery saw yroup conprises 26 saw blades arranged transverse to the direction of the stone block feeding travel. The upper and lower first saw yroups lOA, lOD as well as the upper and lower second saw groups lOB, lOE, each blade being of 50 cm diameter, are adapted to cut the stone block by 5 cm depth, but the last saw group lOC of 64 cm diameter blade adapted to cut by 10 cm depth.
When the stone block of 40 cm width, 30 cm height and 120 cm length is subjected to the cutting work at a feeding ~-rate of 10 cm/min. the cutting ability per minute was about 47 m . ;`~
In reference to Fig. 4, there is provided an auxiliary feeder means in addition to the feeder as explained in reference to Fig. 2 in order to successively feed the stone blocks. When the main hydraulic pressure apparatus 3, 4 and 5 is retracted for preparation o receiving a new supply of the stone block lX, said auxiliary feeder comprising a grasper 23 mounted at the free end of a piston 24 to be cooperated with a cylinder 25 -~
as the hydraulic pressure apparatus may relievingly serve to urge the stone block lA towards left in the drawing.
In Fig. 5, there is illustrated a different feeding means for the stone blocks lA, lB, lC and lD respectively ~ixedlylaid on a carrier 32A, 32B, 32C and 32D each having faur
As the first step, there are provided twelve saw blades lOA, each of 50 cm diameter, mounted on a shaft transversely extended from a gearing casing 12A and driven by an electric motor 13A of 75 h.p. Said saw blades lOA are each equally separated from the adjacent one by a spacer llA of which thickness is adapted to comply with the desired thickness of the slab. The casing 12A is suspended from a machine frame 14 to be adjustable in the level.
The above is just applied to the second and thixd saw groups lOB and lOC, except that the diameter of each saw blade of the last group lOC is of 64 cm. As a matter of course, the dimension of these saw blades is not critical. In view of three groups of saws provided in this embodiment, the level oE each ;~
saw group is so adjusted that the first lOA may cut the stone block by about 10 cm depth or a third, the second lOB into about 20 cm depth or two thirds, and the third lOC through the total `
thickness of 30 cm. In view of that the first and second saw ~ .
~ "
S
1 blades are both of 50 cm diameter, the casing 12A is set higher than the casing 12~ By feeding the s-tone blocks at a rate of 5 c~/min. about llm oE cu-ttiny ability could be reali~ed.
In reference to Fiy. 3, there are provided two additional saw groups lOD and lOE each rotatinyly mounted on the output shaft of the geariny casiny upstanding on a lower machin~
frame 14' so as to be arranyed under said saw groups lOA and lOB. hvery saw yroup conprises 26 saw blades arranged transverse to the direction of the stone block feeding travel. The upper and lower first saw yroups lOA, lOD as well as the upper and lower second saw groups lOB, lOE, each blade being of 50 cm diameter, are adapted to cut the stone block by 5 cm depth, but the last saw group lOC of 64 cm diameter blade adapted to cut by 10 cm depth.
When the stone block of 40 cm width, 30 cm height and 120 cm length is subjected to the cutting work at a feeding ~-rate of 10 cm/min. the cutting ability per minute was about 47 m . ;`~
In reference to Fig. 4, there is provided an auxiliary feeder means in addition to the feeder as explained in reference to Fig. 2 in order to successively feed the stone blocks. When the main hydraulic pressure apparatus 3, 4 and 5 is retracted for preparation o receiving a new supply of the stone block lX, said auxiliary feeder comprising a grasper 23 mounted at the free end of a piston 24 to be cooperated with a cylinder 25 -~
as the hydraulic pressure apparatus may relievingly serve to urge the stone block lA towards left in the drawing.
In Fig. 5, there is illustrated a different feeding means for the stone blocks lA, lB, lC and lD respectively ~ixedlylaid on a carrier 32A, 32B, 32C and 32D each having faur
-4~
"~ `''' ': ~
10~3~
1 supports 33 which may be engaged with an endless belt 34 longitudinally running on a lower machine ~xame 35. Or said support 33 may be a wheel to roll on a rail 34 so that each carrier 32 may be separately moved by any means not shown, or the carriers 32 connected with each other may be pulled or pushed as a whole by any means not shown, In Fig. 6, the three groups of saws 10A, 10B and 10C
are adapted to cut the stone block by only a half of the height or thickness thereof. The stone block lC having been severed 10 by a half cut depth by the third and last saw blades 10C must `
be turned over to be subjected to the second cutting from the reverse side. For that purpose the half depth cut block lD is taken up together with carrier 32D by a fork lift having a fixed base 41L, vertically upstanding posts 42L, sleeves 43L
guid~dly movable along said posts 42L, and a pallet fixed to said sleeves 43L and having rails 34L on which the wheels 33 of the carrier 32D ride. The stone block lE having been liftéd up together with the carrier 32E is on rails 34' laid on the upper frame 14 transferred from the rail 34L on the pallet. The stone block lF having been brought at the middle of the ;~
elongated upper rails 34' is lifted up from the carrier 32F and turned over by a means generally represented by 50 to be - -explained in reference to Fig. 7 and ~en laid on the carrier 32F
again. The carrier 32G on which the turned over stone block lG
is laid is taken up onto rails 34R on the pallet of the fork lift similarly having a fixed base 41R, vertical posts 42R
upstanding thereon, and sleeves 43R guidedly movable alon~
said posts and provided fixedly with said pallet, and lowered do~n to be subjected to the second cutting.
In Fig. 7, the turning over means 50 comprises a frame ` -5-'.' ~;:
1083(~15 1 consisting of two pairs oE wall members 51, 51' and 52, 52'.
Said wall members have respectively two pairs of pla~e members 53, 53' and 54, 54' respectively mounted to the concerned wall ~-member by means of rods 55, 55' and 56, 56' to be, manually or hydraulically or by any other suitable means, moved toward - -or away from the concerned wall member. Said frame is provided with a pair o~ pulleys 57, 57' at the opposite wall members 52, 52' so that a pair of belts 58, 58' extending around the respective pulley may raise or lower the ~rame assembly as a 10 whole or may tilt the frame to be turned over. ~ ` ~
- When said belts 58, 58' are lowered, the frame 51, 51'; ` ~"
' !
52, 52' in which said plate member 53, 53'; 54, 54' having `~;`
been retracted toward the respective wall members, may~snugly ;;--- ~
surround the stone block lF on the carrier 32F. By moving the plate members 53, 53'; 54, 54' away ~rom the concerned wall , . , ~, .. ~. ~
members and consequently toward the concerned sides o~ the stone block lF, this can be firmly grasped in the frame. When~
raising the belts 58, 58' and operating them to rotate the~
respective pulleys ~57, 57' by 180, the frame and consequently ~20 the stone block held therein is completely turned over so as to be laid on the carrier 32F. ..
: .::- ~i.. -:
o ~'' " ': . '
"~ `''' ': ~
10~3~
1 supports 33 which may be engaged with an endless belt 34 longitudinally running on a lower machine ~xame 35. Or said support 33 may be a wheel to roll on a rail 34 so that each carrier 32 may be separately moved by any means not shown, or the carriers 32 connected with each other may be pulled or pushed as a whole by any means not shown, In Fig. 6, the three groups of saws 10A, 10B and 10C
are adapted to cut the stone block by only a half of the height or thickness thereof. The stone block lC having been severed 10 by a half cut depth by the third and last saw blades 10C must `
be turned over to be subjected to the second cutting from the reverse side. For that purpose the half depth cut block lD is taken up together with carrier 32D by a fork lift having a fixed base 41L, vertically upstanding posts 42L, sleeves 43L
guid~dly movable along said posts 42L, and a pallet fixed to said sleeves 43L and having rails 34L on which the wheels 33 of the carrier 32D ride. The stone block lE having been liftéd up together with the carrier 32E is on rails 34' laid on the upper frame 14 transferred from the rail 34L on the pallet. The stone block lF having been brought at the middle of the ;~
elongated upper rails 34' is lifted up from the carrier 32F and turned over by a means generally represented by 50 to be - -explained in reference to Fig. 7 and ~en laid on the carrier 32F
again. The carrier 32G on which the turned over stone block lG
is laid is taken up onto rails 34R on the pallet of the fork lift similarly having a fixed base 41R, vertical posts 42R
upstanding thereon, and sleeves 43R guidedly movable alon~
said posts and provided fixedly with said pallet, and lowered do~n to be subjected to the second cutting.
In Fig. 7, the turning over means 50 comprises a frame ` -5-'.' ~;:
1083(~15 1 consisting of two pairs oE wall members 51, 51' and 52, 52'.
Said wall members have respectively two pairs of pla~e members 53, 53' and 54, 54' respectively mounted to the concerned wall ~-member by means of rods 55, 55' and 56, 56' to be, manually or hydraulically or by any other suitable means, moved toward - -or away from the concerned wall member. Said frame is provided with a pair o~ pulleys 57, 57' at the opposite wall members 52, 52' so that a pair of belts 58, 58' extending around the respective pulley may raise or lower the ~rame assembly as a 10 whole or may tilt the frame to be turned over. ~ ` ~
- When said belts 58, 58' are lowered, the frame 51, 51'; ` ~"
' !
52, 52' in which said plate member 53, 53'; 54, 54' having `~;`
been retracted toward the respective wall members, may~snugly ;;--- ~
surround the stone block lF on the carrier 32F. By moving the plate members 53, 53'; 54, 54' away ~rom the concerned wall , . , ~, .. ~. ~
members and consequently toward the concerned sides o~ the stone block lF, this can be firmly grasped in the frame. When~
raising the belts 58, 58' and operating them to rotate the~
respective pulleys ~57, 57' by 180, the frame and consequently ~20 the stone block held therein is completely turned over so as to be laid on the carrier 32F. ..
: .::- ~i.. -:
o ~'' " ': . '
Claims (2)
- Claim 1 continued a base member;
a pair of upright posts mounted on the base member;
a sleeve engaged with the respective posts movably in a guided manner upwards and downwards along the posts;
a pallet secured to the sleeve so as to move therewith and having a rail means which is able to communicate with a passage of either of said first or second stage; and means for causing the vertical movement of the pallet;
whereby the stone blocks are cut in such a manner that the stone block cut substantially in a predetermined depth by the groups of saw blades is transferred to said second stage together with the work carrier truck by one of said truck vertically trans-ferring means, grasped, turned over and replaced on the work carrier truck by said stone block reversing means, and returned again to an entrance of said first stage by the other truck vertically transferring means to cut a remaining predetermined depth of the stone block through the saw blade groups. - 2. An apparatus as claimed in claim 1, in which said stone block reversing means comprises:
a frame member which includes two pairs of opposite wall members, one pair of which supports on an outer surface thereof a pulley member;
a belt means extending around the respective pulley member to vertically move and turn over the frame member; and a pair of push-rods disposed inside the frame member, supported by each of the wall members and having a push-plate at a free end thereof, said push-rods being actuated to move the respective push-plate away from and close to the respective wall member of the frame member for grasping the stone block therein and releasing the same therefrom.
1. An apparatus for sawing stone blocks into slabs comprising:
a work carrier truck which runs on a passage extending in longitudinal direction of the apparatus.
a plurality of groups of rotary saw blades, each group comprising a plurality of saw blades each arranged with a spacing therebetween which corresponds to a desired thickness;
of the slabs to be obtained, each group of rotary saw blades being mounted on a common shaft driven by an electric motor means;
said plurality of groups of rotary saw blades being disposed in series one behind another along the passage for the work carrier truck and adjustably arranged relative to the work carrier truck and passage of the apparatus, the saw blades of each group being arranged in alignment but in a different position relative to the work carrier truck and passage so that the saw blades of every group have common cutting planes but stepwise increasing cutting depths from the first to last group of saw blades, the improvement comprising:
a first stage for cutting the stone block a certain predetermined depth with said groups of the saw blades;
a second stage disposed above the first stage;
means arranged above said second stage to reverse the stone block having been cut by said predetermined depth;
a pair of means for vertically transferring the work carrier truck together with the stone block mounted thereon, each of said truck vertically transferring means comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA326,813A CA1083015A (en) | 1976-05-17 | 1979-05-02 | Apparatus for sawing stone |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56343/76 | 1976-05-17 | ||
| JP5634376A JPS52138787A (en) | 1976-05-17 | 1976-05-17 | Multiistage type stone cutting device |
| CA275,773A CA1065741A (en) | 1976-05-17 | 1977-04-06 | Apparatus for sawing stone |
| CA326,813A CA1083015A (en) | 1976-05-17 | 1979-05-02 | Apparatus for sawing stone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1083015A true CA1083015A (en) | 1980-08-05 |
Family
ID=27165014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA326,813A Expired CA1083015A (en) | 1976-05-17 | 1979-05-02 | Apparatus for sawing stone |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1083015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500705A (en) * | 2021-06-18 | 2021-10-15 | 江西唯美陶瓷有限公司 | Method and system for controlling cutting speed of double-sided ceramic plate |
-
1979
- 1979-05-02 CA CA326,813A patent/CA1083015A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500705A (en) * | 2021-06-18 | 2021-10-15 | 江西唯美陶瓷有限公司 | Method and system for controlling cutting speed of double-sided ceramic plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |