CN104708105B - Cutter - Google Patents
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- CN104708105B CN104708105B CN201310677300.9A CN201310677300A CN104708105B CN 104708105 B CN104708105 B CN 104708105B CN 201310677300 A CN201310677300 A CN 201310677300A CN 104708105 B CN104708105 B CN 104708105B
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- scissor blade
- trapezoid block
- seat
- cutter
- blade seat
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Abstract
The present invention provides a kind of cutter.The present invention includes installing upper scissor blade seat and lower scissor blade seat inside square framework, described square framework, to be installed on described upper scissor blade seat and install lower scissor blade on upper scissor blade, described lower scissor blade seat, it is characterised in that：Mounting clamping device is gone back inside described lower scissor blade seat connection drive device and shears blades space adjustment measurement apparatus, described square framework, described clamping device is located at the entrance side of described lower scissor blade seat.The present invention can carry out Fast synchronization adjustment to shear edge gap of shearing machine online, it is not necessary to cutter is outputed into unit active side and is adjusted, the time of influence production is reduced.
Description
Technical field：
The present invention relates to a kind of cutter, especially a kind of strip cutter belongs to field of mechanical technique.
Background technology：
In cold-rolling pickling production line, because incoming band steel thickness specification changes greatly, in order that strip can be sheared smoothly, band
The blade clearance of steel cutter is just frequently necessary to follow adjustment, needs to stop feeding passage to transport in conventional shears blades space adjustment
OK, cutter is outputed unit active side and is adjusted, and adjustment time is long, have impact on production line and continuously runs.
Through retrieval, proposed in Chinese patent CN200910261559.9 " shearing edge gap adjusting device of vertical type plate shearing machine "
A kind of fixed cutting edge seat adjusting apparatus, by installing multiple movable skewbacks on an elongated pull bar, when pull bar is moved, activity
Skewback moves tool rest, and after gap adjustment terminates, tool rest could carry out shearing work after being locked using locking device.
The content of the invention：
The purpose of the present invention is to provide a kind of cutter for above-mentioned problem, it is therefore intended that can be online to shearing
Machine blade clearance carries out Fast synchronization adjustment, it is not necessary to cutter is outputed into unit active side and is adjusted, influence is reduced
The time of production.
Above-mentioned purpose is realized by following technical scheme：
Upper scissor blade seat and lower scissor blade seat are installed, described is upper inside cutter, including square framework, described square framework
Installed on cutting edge seat and lower scissor blade is installed on upper scissor blade, described lower scissor blade seat, described lower scissor blade seat connects drive device and cut
Sword gap adjusts and mounting clamping device is gone back inside measurement apparatus, described square framework, and described clamping device is located at described
The entrance side of lower scissor blade seat.
Described cutter, the bottom of described quadra is provided with rectangular seat plate, described rectangular seat
The bottom of plate is installed by one group of roller.
Described cutter, described upper scissor blade seat is fixedly mounted on the inside of described square framework by concave body
Portion.
Described cutter, described drive device includes two groups of work being connected with the pin of described lower scissor blade seat both sides
Dynamic connecting rod, the bottom of described movable rod is arranged on the pin of the both sides of push rod, and described push rod connects hydraulic jack
Piston rod, the cylinder body of described hydraulic jack is arranged on described rectangular seat plate and fixed using fixed plate.
Described cutter, described shears blades space adjustment measurement apparatus includes being clamped in described lower scissor blade seat two respectively
The removable sliding way at end, each described removable sliding way includes having concave slot inside a cuboid, described cuboid,
Two convex blocks that can be moved inside concave slot are provided with inside described concave slot, convex block described in one of them and the
Two trapezoid blocks are connected, convex block and the connection of the 4th trapezoid block described in another, the second described trapezoid block and the described the 4th
Trapezoid block gradient direction is on the contrary, described the second trapezoid block and the first trapezoid block is slidably matched, the 4th described trapezoid block and
Three trapezoid blocks are slidably matched, and the first described trapezoid block and the 3rd described trapezoid block correspond to be fixed on described square frame respectively
The side of frame, described cuboid bottom connecting screw rod, described screw rod connection turbine box, described turbine box connecting worm,
Displacement indication dial disc is connected by gear combination on described worm screw connection handle, described worm screw.
Described cutter, described clamping device includes supporting plate, and described supporting plate is hinged on described by the axle of both sides
The 3rd trapezoid block on, chain connection is used with the piston rod of two cylinders respectively on the bottom surface of the supporting plate, described in two
Cylinder is fixed on inside described square framework by fixed block screw respectively.
Beneficial effect：
The present invention can carry out Fast synchronization adjustment to shear edge gap of shearing machine online, it is not necessary to which cutter is outputed into machine
Group active side is adjusted, and reduces the time of influence production.Due to the upper scissor blade seat that cutter is installed using fixed form, under
Cutting edge seat be mobile, in order to ensure cutter shearing strip at present cutting edge seat run up contact upper scissor blade when, lower scissor blade seat
It can vertically run and not shift, using four groups of trapezoid blocks, every two groups of trapezoid blocks combine to form a slideway, under
Cutting edge seat both sides are positioned, it is ensured that cutting edge mouthful will not shift；And realized by the movement of slideway before lower scissor blade seat
Mobile adjustment afterwards, enables the blade clearance of lower scissor blade seat transmission side and active side to be synchronously adjusted, it is possible to pass through gear
The pointer of connection intuitively carries out reading on dial, the process for reducing hand dipping blade clearance repeatedly.
Brief description of the drawings：
Fig. 1 is the structural representation of the cutter of the present invention.
Fig. 2 is the structural representation of the shears blades space adjustment measurement apparatus of the cutter of the present invention.
The structural representation that Fig. 3 combines for the trapezoid block of the cutter of the present invention.
Fig. 4 is the structural representation of the clamping device of the cutter of the present invention.
Fig. 5 for the present invention cutter supporting plate lift after structural representation.
In figure：1- quadras；10- rectangular seat plates；101- rollers；11- cutters work body side frame；111- frames
Platform on the outside of frame；12- cutters are driven body side frame；121- square holes；13- concave bodies；130- fixed screws；131- strips are cut
Sword；1311- fixed screws；132- upper scissor blades seat；14- lower scissor blades seat；140- lower scissor blades；141- slopes；1411- fixes spiral shell
Silk；142- movable rods；143- pins；144- push rods；145- pins；146- hydraulic cylinder piston rods；147- hydraulic cylinders；148- consolidates
Fixed board；15th, 16- casing tops panel；17- exports side panel；18- entrance side panels；2- can sliding way；20- cuboids；201-
Threaded rod；202- concave slots；The trapezoid blocks of 21- first；211- fixed screws；The trapezoid blocks of 22- second；The convex blocks of 221- first；23-
4th trapezoid block；The convex blocks of 231- second；The trapezoid blocks of 24- the 3rd；241- fixed screws；242- axis holes；25- turbine boxes；26- snails
Bar；261- handles；262- gear train boxes；263- pointers；264- dials；3- supporting plates；30- axles；31- cylinder piston rods；311-
Hinge；32- cylinders；33- fixed blocks.
Embodiment：
The present invention is further described below in conjunction with the accompanying drawings.
As Figure 1-5, cutter includes a quadra 1, and quadra is weldingly fixed on a rectangular seat
On plate 10, bedplate both sides are separately installed with roller 101, and the track that roller 101 can be installed along along ground is promoted and released, described
The stop place that cutter is released from production line is in unit active side；
Top in the cutter quadra 1 is fixed with a concave body 13, the projection spiral shell of concave body both sides
Silk is fixed on cutter transmission body side frame 12 and the inner side of work body side frame 11, and the lower surface of the horizontal part of concave body 13 is welded with one
Upper scissor blade seat 132, cutting edge seat 132, which is tightened up a screw, is fixed with strip cutting edge 131, and cutting edge mouthful is installed downwards, and the concave body 13 is led
It is that screw is fixed in cutter quadra 1 to act on, and is conveniently adjusted upper scissor blade seat about 132 and longitudinal separation；It is described
The corresponding screw 1411 of lower scissor blade 140 of upper scissor blade 131 is fixed on a lower scissor blade seat 14, and lower scissor blade seat 14 goes out in cutter
There is a slope 141 mouth side；Described slope 141 and lower scissor blade mouthful 140 one 60 degree of angle of formation, its role is to shear
The strip got off can be slided into waste material bucket along slope 141, and can reduce install again on a production line one piece of shearing waste material guiding
Plate；
The lower scissor blade seat 14 is respectively by two groups of movable rods 142 as supporting, and every group of movable rod 142 has two groups
Into, the upper end of each movable rod is socketed on a pin 143, pin be respectively welded be fixed on lower scissor blade seat entrance side and
On the vertical two sides of outlet side；The entrance side refers to that strip enters shearing pusher side, and outlet side refers to that strip passes shearing pusher side；
Two movable rods 142 are socketed on the pin 143 of 14 two sides of lower scissor blade seat respectively in described every group, and two movable rods will
Lower scissor blade seat 14 is clipped in wherein, is positioned on the outside of the upper end of movable rod by the split pin on pin；
The bottom of two groups of movable rods 142 is also socketed on a pin 143 respectively；The pin is welded on one
On the individual two sides of push rod 144, positioned on the outside of the bottom of movable rod 142 by the split pin on pin；The push rod 144
In cutter base of frame casing；The casing is by cutter frame inlet side side panel 18, outlet side side panel 17
And top panel 15 and 16 is constituted；There are an oblong openings middle of the casing top panel 15,16, and two groups of activities connect
Bar can the freely activity between oblong openings；The casing is provided with a square hole 121 in transmission side base of frame, push rod 144 from
Stretched out in square hole 121, the end of push rod 144 is connected with a hydraulic cylinder piston rod 146 by pin 145, hydraulic cylinder 147 is installed solid
On the bedplate 10 for being scheduled on shearing machine frame；After hydraulic cylinder 147 is receiving PLC instructions, piston rod 146 stretches out, the band of push rod 144
Dynamic movable rod 142 is rotated around pin, and the stroke of movable rod, which changes, holds up lower scissor blade seat 14,14 liang of lower scissor blade seat
End be sheared respectively machine active side and transmission side can sliding way 2 position；Lower scissor blade seat 14 along can sliding way with fixation on cut
Sword seat 132 is crossed, and upper lower scissor blade completes strip shearing；
Cutter transmission body side frame 12 and the inner side of work body side frame 11 be respectively mounted be fixed with one can sliding way 2,
Can sliding way be made up of four groups of trapezoid blocks, every two groups of trapezoid blocks combine to form a slideway, and lower scissor blade seat is 14 sandwiched therebetween, right
Lower scissor blade seat front and rear sides is positioned, and lower scissor blade seat can be moved up and down in slideway；Two groups of trapezoid blocks are respectively by the first ladder
The trapezoid block 22 of shape block 21 and second is combined into one group, and the 3rd trapezoid block 24 and the 4th trapezoid block 23 are combined into one group；
Wherein the first trapezoid block 21 is fixed slider, it is characterised in that upper bottom is short, bottom length, and the first trapezoid block vertical edges are with cutting
Cut machine frame vertical edges parallel, the first trapezoid block screw is fixed on the inside of shearing machine frame；
Second trapezoid block 22 is movable slider, it is characterised in that upper bottom is long, goes to the bottom short, the hypotenuse of the second trapezoid block and the first ladder
The hypotenuse contact of shape block, the second trapezoid block vertical edges carry out plane contact with lower scissor blade seat trailing flank, and forming one can sliding way；
3rd trapezoid block 24 is fixed slider, it is characterised in that upper bottom is long, go to the bottom short, the 3rd trapezoid block vertical edges and cutter
Framework vertical edges are parallel, and the 3rd trapezoid block screw is fixed on the inside of shearing machine frame；
4th trapezoid block 23 is movable slider, it is characterised in that upper bottom is short, bottom length, the hypotenuse of the 4th trapezoid block and the 3rd ladder
The hypotenuse contact of shape block, the 4th trapezoid block vertical edges and lower scissor blade seat plane contact made above, formed one can sliding way,
The trapezoid block 23 of second trapezoid block 22 and the 4th is sandwiched therebetween by lower scissor blade seat 14, it is therefore intended that lower scissor blade seat energy
Enough vertical direction along trapezoid block vertical edges, which are moved up and down, not to be shifted, and also lower scissor blade seat both sides are positioned, it is therefore prevented that
The offset that lower scissor blade seat is caused when being promoted pin by movable rod occurs；
It is convex that first is respectively welded on the second trapezoid block 22 and the lower surface of the 4th trapezoid block 23 in two groups of trapezoid blocks
A cuboid 20 is socketed with type block 221, the second convex block 231, two convex blocks；" convex " shape is provided with inside cuboid hollow
Groove 202, the first convex block 221, the second convex block 231 can be moved in concave slot 202, and its role is to hollow by cuboid
Groove 202 is socketed in the first convex block 221, the second trapezoid block 22 can be achieved in the second convex block 231 and the 4th trapezoid block 23 is overall
Synchronizing moving, is easy to regulation；
The horizontal lower surface of cuboid block 20 difference of cutter transmission body side frame 12 and work body side frame 11 inner side
A threaded rod 201 is welded with, threaded rod is socketed with a turbine box 25, and turbine box screw is fixed on cutter base of frame
On the platform of casing top panel 15；Two turbine boxes 25 are socketed on a worm screw 26 respectively on the casing platform 15, worm screw
The circular hole that 26 one end work on body side frame from cutter stretches out；The worm screw 26 also connects on cutter work body side frame external part
A gear train box 262 is connected to, the screw of gear train box 262 is fixed on the outside of cutter work body side frame on platform 111；
The middle gear of gear train box 262 is fixedly connected with a pointer 263, and pointer points to a dial 264, scale
Disk, which is adopted, to be screwed on the face of gear train box 262；The end that the worm screw 26 stretches out framework is also associated with a handle 261,
By rotating clockwise handle 261, worm screw 26 rotates, and worm screw drives the threaded rod 201 of two turbine boxes 25 of casing top to rise,
Also cuboid block 20 is made to increase, the second trapezoid block 22 and the 4th trapezoid block on the inside of cutter transmission body side frame and work body side frame
23 it is synchronous rise, due to the second trapezoid block 22 be characterised by upper bottom length, go to the bottom it is short, the 4th trapezoid block 23 be characterised by bottom it is short,
Bottom length, so the first trapezoid block 21 of the second trapezoid block 22 and fixed slider coordinates, the 3rd of the 4th trapezoid block 23 and fixed slider the
Trapezoid block 24 coordinates, and the second trapezoid block 22 and the 4th trapezoid block 23 pass through bottom the first convex block 221, the edge of the second convex block 231
Concave slot 202 is moved to cutter strip outlet side direction, and trapezoid block drives lower scissor blade seat overall to cutter strip outlet side
Direction is moved, and shear edge gap of shearing machine increase, pointer can intuitively carry out reading by the conversion of gear train box on dial；
If rotating counterclockwise handle 261, worm screw 26 rotates, and worm screw drives the threaded rod 201 at casing top two ends to decline,
Also decline cuboid block 20, the second trapezoid block 22 and the 4th trapezoid block on the inside of cutter transmission body side frame and work body side frame
23 it is synchronous decline, the second trapezoid block and the 4th trapezoid block are by bottom the first convex block 221, the second convex block 231 along concave slot
202 move to cutter strip entrance side direction, and trapezoid block drives lower scissor blade seat 14 overall to cutter strip entrance side direction
Mobile, shear edge gap of shearing machine reduces；
14 entrance sides of the cutter lower scissor blade seat are also equipped with a supporting plate 3, and the feature of supporting plate 3 is rectangle, level
Be placed on cutter entrance, supporting plate is concordant with production line strip transport channel, and supporting plate is slightly above lower scissor blade 140, be easy to strip from
Cutter entrance side is through outlet side；Supporting plate is respectively welded an axle at the long side two ends close to cutter cutting edge entrance side
30；The two ends of the axle 30 are socketed in the 3rd trapezoid block 24 of cutter transmission body side frame 12 and the inner side of work body side frame 11 respectively
Axis hole 242 in；Piston rod 31 of the supporting plate on the supporting plate bottom surface in horizontal positioned respectively with two cylinders 32 is using hinge
Chain 311 is connected, and two cylinders 32 are fixed on cutter framework strip entrance side casing top by the screw of fixed block 33 respectively and put down
On platform 16；The effect of the supporting plate can serve as the transition bridge that strip enters between cutter cutting edge transported on production line,
The effect of grip block when can also be sheared as strip, prevents strip vertical tremor in shearing, and strip shear surface is uneven；When
Strip is transported onto supporting plate 3 through cutter outlet side by production line upper roller, and strip steel head falls the knife beam seat under cutter
On slope 141, when needing shearing strip, cylinder 32 works, and piston rod 31 stretches out, the long side end quilt of supporting plate 3 away from cutting edge side
Lift, supporting plate 3 and strip contact, on the lower surface that strip is squeezed in upper scissors base, stabilization is played to strip, cut under
Sword is lifted when being sheared, and is reduced strip bounce, is sheared slope 141 of the lower strip steel head along lower knife beam seat and slides into waste material bucket
In；After knife shearing is finished, lower scissor blade seat 14 declines, and the piston rod 31 of cylinder sets back, and supporting plate 3 returns to horizontal position
Put, be that shearing next time prepares；
Shears blades space adjustment process：
By rotating clockwise handle 261, worm screw 26 rotates, and worm screw drives the threaded rod of two turbine boxes 25 of casing top
201 rise, and cuboid block 20 is increased, the second trapezoid block 22 and the on the inside of cutter transmission body side frame and work body side frame
Four trapezoid block 23 is synchronous to be risen, and because the second trapezoid block 22 is characterised by that upper bottom length, bottom are short, the 4th trapezoid block 23 is characterised by
Upper bottom is short, bottom length, so the first trapezoid block 21 of the second trapezoid block 22 and fixed slider coordinates, the 4th trapezoid block 23 and fixed slider
The 3rd trapezoid block 24 coordinate, the second trapezoid block 22 and the 4th trapezoid block 23 pass through bottom the first convex block 221, the second convex block
231 move along cuboid concave slot 202 to cutter strip outlet side direction, and trapezoid block drives lower scissor blade seat overall to cutter
Strip outlet side direction is moved, and shear edge gap of shearing machine increase, pointer can be intuitively on dial by the conversion of gear train box
Carry out reading；
If rotating counterclockwise handle 261, worm screw 26 rotates, and worm screw drives the threaded rod 201 at casing top two ends to decline,
Also decline cuboid block 20, the second trapezoid block 22 and the 4th trapezoid block on the inside of cutter transmission body side frame and work body side frame
23 it is synchronous decline, the second trapezoid block and the 4th trapezoid block are by bottom the first convex block 221, the second convex block 231 along cuboid
Concave slot 202 is moved to cutter strip entrance side direction, and trapezoid block drives lower scissor blade seat 14 overall to cutter strip entrance
Side reduces to movement, shear edge gap of shearing machine；
By two groups of cutter can the Mobile solution of sliding way realize the movable adjustment of lower scissor blade, make lower scissor blade seat biography
Dynamic side and the blade clearance of active side can be synchronously adjusted, it is possible to which the pointer connected by gear train is straight on dial
The carry out reading of sight, the process for reducing hand dipping blade clearance repeatedly.
Claims (5)
1. upper scissor blade seat and lower scissor blade seat are installed inside a kind of cutter, including square framework, described square framework, it is described
Installed on upper scissor blade seat and lower scissor blade is installed on upper scissor blade, described lower scissor blade seat, it is characterised in that：Described lower scissor blade seat connection
Mounting clamping device, described clamping dress are gone back inside drive device and shears blades space adjustment measurement apparatus, described square framework
Setting in the entrance side of described lower scissor blade seat, described shears blades space adjustment measurement apparatus include being clamped in respectively it is described under
The removable sliding way at cutting edge seat two ends, each described removable sliding way includes having inside a cuboid, described cuboid
There is a concave slot, two convex blocks that can be moved inside concave slot are provided with inside described concave slot, described in one of them
Convex block and the connection of the second trapezoid block, convex block described in another and the connection of the 4th trapezoid block, described the second trapezoid block and
Described the 4th trapezoid block gradient direction is on the contrary, described the second trapezoid block and the first trapezoid block is slidably matched, and the described the 4th
Trapezoid block and the 3rd trapezoid block are slidably matched, and the first described trapezoid block and the 3rd described trapezoid block correspond to be fixed on institute respectively
The side for the square framework stated, described cuboid bottom connecting screw rod, described screw rod connection turbine box, described turbine box
Displacement indication dial disc is connected by gear combination on connecting worm, described worm screw connection handle, described worm screw.
2. cutter according to claim 1, it is characterised in that：The bottom of described square framework is provided with rectangle bottom
Seat board, the bottom of described rectangular seat plate is installed by one group of roller.
3. cutter according to claim 1 or 2, it is characterised in that：Described upper scissor blade seat is fixed by concave body pacifies
Mounted in described square framework inside upper part.
4. cutter according to claim 1 or 2, it is characterised in that：Described drive device include with it is described under cut
Two groups of movable rods of the pin connection of sword seat both sides, the bottom of described movable rod is arranged on the pin of the both sides of push rod
On, described push rod connects the piston rod of hydraulic jack, and the cylinder body of described hydraulic jack is arranged on described rectangular seat
Fixed on plate and using fixed plate.
5. cutter according to claim 1, it is characterised in that：Described clamping device includes supporting plate, described supporting plate
It is hinged on by the axle of both sides on the 3rd described trapezoid block, the piston rod on the bottom surface of the supporting plate respectively with two cylinders is adopted
It is hinged, the cylinder described in two is fixed on inside described square framework by fixed block screw respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677300.9A CN104708105B (en) | 2013-12-13 | 2013-12-13 | Cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310677300.9A CN104708105B (en) | 2013-12-13 | 2013-12-13 | Cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104708105A CN104708105A (en) | 2015-06-17 |
| CN104708105B true CN104708105B (en) | 2017-07-14 |
Family
ID=53408110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310677300.9A Active CN104708105B (en) | 2013-12-13 | 2013-12-13 | Cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104708105B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737998B (en) * | 2015-08-14 | 2019-01-25 | 马鞍山市恒泰重工机械有限公司 | A kind of high-precision laser bonding machine cutting edge |
| CN109877380A (en) * | 2019-03-08 | 2019-06-14 | 富华中元江苏重机科技有限公司 | A kind of transmission mechanism of cutter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2757981Y (en) * | 2004-09-21 | 2006-02-15 | 中冶南方工程技术有限公司 | Steel plate shearing machine with regulatable up down knife side gap |
| CN201329442Y (en) * | 2008-12-30 | 2009-10-21 | 二重集团（德阳）重型装备股份有限公司 | Plate shearer |
| CN201922102U (en) * | 2010-12-30 | 2011-08-10 | 一重集团大连设计研究院有限公司 | Double-layer hydraulic shear capable of being pushed and pulled |
| CN202199832U (en) * | 2011-06-16 | 2012-04-25 | 苏州宝联重工股份有限公司 | Shearing machine capable of automatically regulating gap between shear blades |
| CN103231278A (en) * | 2013-05-17 | 2013-08-07 | 泰安华鲁锻压机床有限公司 | Automatic gap adjusting device of crop shear |
-
2013
- 2013-12-13 CN CN201310677300.9A patent/CN104708105B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2757981Y (en) * | 2004-09-21 | 2006-02-15 | 中冶南方工程技术有限公司 | Steel plate shearing machine with regulatable up down knife side gap |
| CN201329442Y (en) * | 2008-12-30 | 2009-10-21 | 二重集团（德阳）重型装备股份有限公司 | Plate shearer |
| CN201922102U (en) * | 2010-12-30 | 2011-08-10 | 一重集团大连设计研究院有限公司 | Double-layer hydraulic shear capable of being pushed and pulled |
| CN202199832U (en) * | 2011-06-16 | 2012-04-25 | 苏州宝联重工股份有限公司 | Shearing machine capable of automatically regulating gap between shear blades |
| CN103231278A (en) * | 2013-05-17 | 2013-08-07 | 泰安华鲁锻压机床有限公司 | Automatic gap adjusting device of crop shear |
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| Publication number | Publication date |
|---|---|
| CN104708105A (en) | 2015-06-17 |
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