CN103350459B - A kind of arc slab edge trimmer - Google Patents

A kind of arc slab edge trimmer Download PDF

Info

Publication number
CN103350459B
CN103350459B CN201310300576.5A CN201310300576A CN103350459B CN 103350459 B CN103350459 B CN 103350459B CN 201310300576 A CN201310300576 A CN 201310300576A CN 103350459 B CN103350459 B CN 103350459B
Authority
CN
China
Prior art keywords
assembly
planker
traversing
spindle drive
arc
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.)
Active
Application number
CN201310300576.5A
Other languages
Chinese (zh)
Other versions
CN103350459A (en
Inventor
苏永定
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENGDA MACHINERY CO Ltd
Original Assignee
SHENGDA MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENGDA MACHINERY CO Ltd filed Critical SHENGDA MACHINERY CO Ltd
Priority to CN201310300576.5A priority Critical patent/CN103350459B/en
Publication of CN103350459A publication Critical patent/CN103350459A/en
Application granted granted Critical
Publication of CN103350459B publication Critical patent/CN103350459B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Milling Processes (AREA)

Abstract

The invention discloses a kind of arc slab edge trimmer, it is made up of frame, traversing assembly, planker lift assembly, spindle drive assembly, workbench assembly and electric-control system; Described traversing assembly is set up in frame, described planker lift assembly is installed on traversing assembly by middle carriage, described spindle drive assembly is installed on planker lift assembly, and described workbench assembly is installed on below traversing assembly, and described electric-control system is installed on frame side; Described spindle drive assembly is made up of front left cutter spindle drive assembly, front right cutter spindle drive assembly, rear left cutter spindle drive assembly and rear right cutter spindle drive assembly, described planker lift assembly is made up of front planker lift assembly and rear base plate lift assembly, described front left cutter spindle drive assembly, front right cutter spindle drive assembly symmetry are installed on front planker lift assembly, and described rear left cutter spindle drive assembly and rear right cutter spindle drive assembly rotatably symmetry are installed on rear base plate lift assembly.

Description

A kind of arc slab edge trimmer
Technical field
The present invention relates to stone cutting machine field, particularly relate to a kind of arc slab edge trimmer.
Background technology
Because arc plate usually needs several piece to be merged formation full circle in decorative engineering uses, realize seamless spliced, for ensureing assembled effect, namely gap is spliced minimum until with the naked eye None-identified, need to carry out high-precision cutting to every block arc plate, guarantee the accuracy to size of the four edges of arc plate.Traditional assembling method adopts manual setting-out cutting, or cut respectively with every bar limit, simple machinery location, and this cutting method does not weigh time-consuming effort, and cannot ensure precision, and the gap size be spliced differs, and affects presentation quality.Application number 201020269804.9 is called that the patent of invention of " a kind of multi-cutter edge cutting machine " discloses a kind of multi-cutter edge cutting machine for stone material trimming, but it is only applicable to stone material project plate trimming routinely, although reason is its cutter shaft component can carry out elevating movement under the effect of lowering or hoisting gear, but cutter shaft component does not arrange rotational structure, thus cause the cutting angle of this bead cutter to adjust, cutting angle requirement required for not competent arc plate circular arc two end section cutting, simultaneously its workbench is that the broad-adjustable structure of clamping also embodies its trimming for rectangle material and designs, therefore, need to improve the function of existing bead cutter and precision, manufacture a kind of arc plate trimming special, and the arc slab edge trimmer of the high cutting accuracy of arc plate trimming in enormous quantities can be carried out.
Summary of the invention
The object of the present invention is to provide a kind of compact conformation, the arc slab edge trimmer that machining accuracy is high.
The technical scheme realizing the object of the invention is, a kind of arc slab edge trimmer, and it comprises frame, traversing assembly, planker lift assembly, spindle drive assembly, workbench assembly and electric-control system; Described traversing assembly is set up in frame, described planker lift assembly is installed on traversing assembly by middle carriage, described spindle drive assembly is installed on planker lift assembly, and described workbench assembly is installed on below traversing assembly, and described electric-control system is installed on frame side; Described spindle drive assembly is made up of spindle drive assembly after two forward spindle drive assemblies and two, described planker lift assembly is made up of two front planker lift assemblies and two rear base plate lift assemblies, described two forward spindle drive assemblies symmetry is installed on two front planker lift assemblies of traversing assembly front end, and after described two, spindle drive assembly is rotatably symmetrical is installed on two rear base plate lift assemblies of traversing assembly rear end.
In order to better technique effect, arc slab edge trimmer of the present invention can also do following improvement:
1, described rear base plate lift assembly is made up of rear base plate crank, rear feed screw mandrel, middle carriage, rear upper planker and upper slide rest; Described rear base plate crank is connected with rear feed screw mandrel is embedded by square head structure; Described rear feed screw mandrel is fixedly connected with middle carriage, and described middle carriage and rear upper planker are slidably matched, and described upper slide rest is fixed on planker.Adjust cutting position by the mode of rear base plate crank hand lifting/lowering, its structure is simple, has been convenient to the control needs of angle precision, can save manufacturing cost simultaneously.
Further, the middle carriage of described rear base plate lift assembly and rear upper planker are that a pair dove-tail form slide is secondary.Dove-tail form slide pair can play hold-down plate surface effect, with the gap of a panel with regard to adjustable horizontal and vertical direction, and highly little, compact conformation, can bear disturbing moment.
2, described rear spindle drive assembly comprises motor, rear axle casing, main shaft and push type broach dish; Described rear axle casing is fixedly installed on the upper slide rest of rear base plate lift assembly by circumference T-slot bolt.The form that described circumference T-slot bolt is fixed can realize rear spindle drive assembly 120 degree rotation, thus meets its angle adjustment requirement.
Further, described push type broach dish is made up of external pressure cutterhead and interior push type broach dish, and described interior push type broach dish and main shaft tight fit, to ensure the kinematic accuracy of cutter; Described external pressure cutterhead and main shaft are matched in clearance, so that the needs of cutter loading-unloading.
3, described traversing assembly is made up of crossbeam and four transverse-moving mechanisms; Described transverse-moving mechanism comprises traversing crank, screw mandrel and traversing planker, and described traversing planker and crossbeam form track sliding pair, is installed with crossbeam pressing plate, in order to fixed cross beam planker inside described traversing planker; Traversing planker is installed with feed screw nut towards the centre of crossbeam side, described screw mandrel one end is sheathed in feed screw nut, the other end is rotatably fixed on crossbeam by bearing, and traversing crank is positioned at crossbeam side and is connected by square head structure and screw mandrel are embedded.Adjust cutting position by the mode of traversing crank hand lifting/lowering, its structure is simple, has been convenient to the control needs of angle precision, can save manufacturing cost simultaneously.
4, described workbench assembly comprises worktable panel, motor for speed reducer and arc plate plate fixing device; Described worktable panel side is installed with tooth bar seat, and drive tooth bar for stationary work-table, motor for speed reducer is fixed on tooth bar seat side, and motor for speed reducer output is provided with a gear, drives tooth bar to engage composition one rack pinion pair with workbench; Described arc plate plate fixing device by mould bases, pattern, push away groove and pressure stone frame forms; Describedly push away that groove is laterally parallel is installed on worktable panel two ends, two mould bases are vertically fixed on and push away on groove; Described pattern cross section is class right angled triangle, and its hypotenuse is arc, and described pattern arcwall face is installed, for placing arc plate sheet material at rectangular angle towards inherent mould bases corner; Pressure stone frame is installed between two mould bases, pressure stone frame is placed with the channel-section steel for fixing circular arc sheet material.
Further, described mould bases is fixed on is pushed away on groove by mould bases T-shaped bolt of transposing; Be convenient to manually adjustment and fix.
The arc slab edge trimmer that the present invention realizes respectively has two limits to be that the rule of parallel edges is to design cut mode in the four edges according to arc plate.Have the both sides of circular arc cutting section, because its cross section is vertical with arc plate face and by centre point, and cut mode is limited by the impact of arc diameter size variation, so do not need saw blade pendulum angle.Then spindle drive assembly is mainly used to the limit, square-section of cutting arc shape work piece plate, and its cross section is by the center of circle of circular arc, and therefore two sections forms an angle requirement.The pattern that the machine adopts circumference T-slot bolt fixing by the rear axle casing of double-pole spindle drive assembly after installing, after realizing, spindle drive assembly can 120 degree rotations thus meet its angle adjustment requirement.Just need during rule material due to the cuts sheet material that only changes under normal circumstances to adjust, adjust frequency not high, the traversing assembly of the present invention and rear base plate lift assembly adopt fairly simple crank to control, direct use manually adjusts, not only can simplify complete machine frame for movement, can also greatly save production cost, the present invention is particularly useful for large batch of arc plate trimming.
Accompanying drawing explanation
Fig. 1 is the front view of arc slab edge trimmer of the present invention;
Fig. 2 is the top view of arc slab edge trimmer of the present invention;
Fig. 3 is the front view of arc slab edge trimmer rear base plate lift assembly of the present invention;
Fig. 4 is the top view of arc slab edge trimmer rear base plate lift assembly of the present invention;
Fig. 5 is the structural representation of lifting spindle assembly after arc slab edge trimmer of the present invention;
Fig. 6 is the structural representation of the traversing assembly of arc slab edge trimmer of the present invention;
Fig. 7 is that the traversing assembly A-A of arc slab edge trimmer of the present invention is to sectional view;
Fig. 8 is arc slab edge trimmer workbench assembly front view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As depicted in figs. 1 and 2, a kind of arc slab edge trimmer, it comprises frame 1, traversing assembly 2, planker lift assembly 3, spindle drive assembly 4, workbench assembly 5 and electric-control system 6; Described traversing assembly 2 is set up in frame 1, described planker lift assembly 3 is installed on traversing assembly 2 by middle carriage 33, described spindle drive assembly 4 is installed on planker lift assembly 3, and described workbench assembly 5 is installed on below traversing assembly 2, and described electric-control system 6 is installed on frame 1 side; Described spindle drive assembly 4 is made up of spindle drive assembly 42 after two forward spindle drive assemblies 41 and two, described planker lift assembly 3 is made up of two front planker lift assemblies 31 and two rear base plate lift assemblies 32, described two forward spindle drive assembly 41 symmetries are installed on two front planker lift assemblies 31 of traversing assembly front end, and after described two, spindle drive assembly 42 is rotatably symmetrical is installed on two rear base plate lift assemblies 32 of traversing assembly rear end.Described forward spindle drive assembly, front planker assembly and electric-control system assembly structure are known features, do not repeat at this.
As shown in Figure 3 and Figure 4, described rear base plate lift assembly 32 is made up of rear base plate crank 321, rear feed screw mandrel 322, middle carriage 33, rear upper planker 323 and upper slide rest 324; Described rear base plate crank 321 is connected with rear feed screw mandrel 322 is embedded by square head structure 20; Described rear feed screw mandrel is fixedly connected with middle carriage, and described middle carriage 33 and rear upper planker 323 are that a pair dove-tail form slide is secondary, and described upper slide rest 324 is fixed on planker 323.
As shown in Figure 4 and Figure 5, described rear spindle drive assembly 42 comprises motor 421, rear axle casing 422, main shaft 423 and push type broach dish 424; Described rear axle casing 422 is fixedly installed on the upper slide rest 324 of rear base plate lift assembly by circumference T-slot bolt 425.Described push type broach dish 424 is made up of external pressure cutterhead 4241 and interior push type broach dish 4242, described interior push type broach dish 4242 and main shaft 423 tight fit; Described external pressure cutterhead 4241 is matched in clearance with main shaft 423.
Described traversing assembly 2 is made up of crossbeam 21 and four transverse-moving mechanisms 22 as shown in Figure 6 and Figure 7; Described transverse-moving mechanism comprises traversing crank 221, screw mandrel 222 and traversing planker 223, and described traversing planker 223 forms track sliding pair with crossbeam 21, is installed with crossbeam pressing plate 226, in order to fixed cross beam planker inside described traversing planker 223; Traversing planker 223 is installed with feed screw nut 224 towards the centre of crossbeam 21 side, described screw mandrel 222 one end is sheathed in feed screw nut 224, the other end is rotatably fixed on crossbeam 21 by bearing 225, and traversing crank 221 is positioned at crossbeam 21 side and is connected with screw mandrel 222 is embedded by square head structure 20.
As illustrated in figures 1 and 8, described workbench assembly 5 comprises worktable panel 56, motor for speed reducer 51 and arc plate plate fixing device 52; Described worktable panel 56 side is installed with tooth bar seat 53, tooth bar 54 is driven for stationary work-table, motor for speed reducer 51 is fixed on tooth bar seat 53 side, and motor for speed reducer 51 output is provided with a gear 55, drives tooth bar 54 to engage composition one rack pinion pair with workbench; Described arc plate plate fixing device 52 by mould bases 521, pattern 522, push away groove 523 and pressure stone frame 524 forms; Describedly push away that groove 523 is laterally parallel is installed on worktable panel 56 two ends, by mould bases T-shaped bolt 525 of transposing, two mould bases 521 are vertically fixed on that to push away described pattern 522 cross section on groove 523 be class right angled triangle, its hypotenuse is arc, described pattern arcwall face is installed, for placing arc plate sheet material towards the rectangular angle of inherent mould bases 521 4 jiaos; Pressure stone frame 524 is installed between two mould bases 521, pressure stone frame is placed with the channel-section steel 526 for fixing circular arc sheet material.
During work, arc plate 10 symmetry to be positioned in pattern 522 in the heart, then fixing tight with channel-section steel 526, travelling table, work is made to be positioned at front end immediately below crossbeam, spindle drive assembly 4 declines under planker lift assembly 3 controls, be located at the anterior position of work, when carrying out the cutting of front double-pole, before controlling, planker lift assembly 31 carries out the adjustment of lifting position, use traversing crank 221 manually to carry out the adjustment of forward spindle drive assembly 41, after having adjusted, the cutting processing that workbench carries out front double-pole can be started.Clamping workpiece is again needed before rear double-pole cutting, by arc plate Inner arc upward symmetry be positioned on pattern 522, compress with the channel-section steel 526 on compression frame 524, travelling table makes workpiece be positioned at rear spindle drive assembly 42 front end (now forward spindle drive assembly must avoid workpiece), must, according to the rotation pivot angle of the circular arc size adjustment saw blade of arc plate workpiece, make its cut surface perpendicular to external arc tangent line.After adjusting, fix relevant parts, just can start workbench and carry out trimming processing.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (7)

1. an arc slab edge trimmer, it comprises frame (1), traversing assembly (2), planker lift assembly (3), spindle drive assembly (4), workbench assembly (5) and electric-control system (6), described traversing assembly (2) is set up in frame (1), described planker lift assembly (3) is installed on traversing assembly (2) by middle carriage (33), described spindle drive assembly (4) is installed on planker lift assembly (3), described workbench assembly (5) is installed on traversing assembly (2) below, and described electric-control system (6) is installed on frame (1) side, it is characterized in that, described spindle drive assembly (4) is made up of spindle drive assembly (42) after two forward spindle drive assemblies (41) and two, described planker lift assembly (3) is made up of two front planker lift assemblies (31) and two rear base plate lift assemblies (32), described two forward spindle drive assembly (41) symmetries are installed on two front planker lift assemblies (31) of traversing assembly (2) front end, after described two spindle drive assembly (42) rotatably symmetry be installed on two rear base plate lift assemblies (32) of traversing assembly (2) rear end, described rear base plate lift assembly (32) is made up of rear base plate crank (321), rear feed screw mandrel (322), middle carriage (33), rear upper planker (323) and upper slide rest (324), described rear base plate crank (321) is connected with rear feed screw mandrel (322) is embedded by square head structure (20), described rear feed screw mandrel (322) is fixedly connected with middle carriage (33), described middle carriage (33) and rear upper planker (323) are slidably matched, and described upper slide rest (324) is fixed on rear upper planker (323).
2. arc slab edge trimmer according to claim 1, is characterized in that, middle carriage (33) and the rear upper planker (323) of described rear base plate lift assembly are dove-tail form slide pair.
3. arc slab edge trimmer according to claim 1, it is characterized in that, described rear spindle drive assembly (42) comprises motor (421), rear axle casing (422), main shaft (423), push type broach dish (424); Described rear axle casing (422) is fixedly installed on the upper slide rest (324) of rear base plate lift assembly by circumference T-slot bolt (425).
4. arc slab edge trimmer according to claim 3, it is characterized in that, described push type broach dish (424) is made up of external pressure cutterhead (4241) and interior push type broach dish (4242), described interior push type broach dish (4242) and main shaft (423) tight fit, described external pressure cutterhead (4241) and main shaft (423) are matched in clearance.
5. arc slab edge trimmer according to claim 1, is characterized in that, described traversing assembly (2) is made up of crossbeam (21) and four transverse-moving mechanisms (22); Described transverse-moving mechanism comprises traversing crank (221), screw mandrel (222) and traversing planker (223); Described traversing planker (223) and crossbeam (21) form track sliding pair; Described traversing planker (223) inner side is installed with crossbeam pressing plate (226); Traversing planker (223) is installed with feed screw nut (224) towards the centre of crossbeam (21) side, described screw mandrel (222) one end is sheathed in feed screw nut (224), the other end is rotatably fixed on crossbeam (21) by bearing (225), and traversing crank (221) is positioned at crossbeam (21) side and is connected with screw mandrel (222) is embedded by square head structure (20).
6. arc slab edge trimmer according to claim 1, is characterized in that, described workbench assembly (5) comprises worktable panel (56), motor for speed reducer (51) and arc plate plate fixing device (52); Described worktable panel (56) side is installed with tooth bar seat (53), tooth bar (54) is driven for stationary work-table, motor for speed reducer (51) is fixed on tooth bar seat (53) side, motor for speed reducer (51) output is provided with a gear (55), drives tooth bar (54) to engage composition one rack pinion pair with workbench; Described arc plate plate fixing device (52) by mould bases (521), pattern (522), push away groove (523) and pressure stone frame (524) form; Describedly push away that groove (523) is laterally parallel is installed on worktable panel (56) two ends, described pattern (522) cross section is class right angled triangle, its hypotenuse is arc, described pattern (522) arcwall face is installed, for placing arc plate sheet material at rectangular angle towards inherent mould bases (521) corner; Pressure stone frame (524) is installed between two mould bases (521), pressure stone frame is placed with the channel-section steel (526) for fixing circular arc sheet material.
7. arc slab edge trimmer according to claim 6, is characterized in that, described mould bases (521) is fixed on is pushed away on groove (523) by mould bases T-shaped bolt (525) of transposing.
CN201310300576.5A 2013-07-18 2013-07-18 A kind of arc slab edge trimmer Active CN103350459B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310300576.5A CN103350459B (en) 2013-07-18 2013-07-18 A kind of arc slab edge trimmer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310300576.5A CN103350459B (en) 2013-07-18 2013-07-18 A kind of arc slab edge trimmer

Publications (2)

Publication Number Publication Date
CN103350459A CN103350459A (en) 2013-10-16
CN103350459B true CN103350459B (en) 2015-08-12

Family

ID=49306919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310300576.5A Active CN103350459B (en) 2013-07-18 2013-07-18 A kind of arc slab edge trimmer

Country Status (1)

Country Link
CN (1) CN103350459B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105082377B (en) * 2014-05-07 2017-05-10 洛阳金诺机械工程有限公司 Cutting device for tabular crystal
ITMI20150580A1 (en) 2015-04-22 2016-10-22 Gmm S P A MACHINE FOR PROCESSING SHEET MATERIALS
CN106514267A (en) * 2016-12-05 2017-03-22 苏州瑞升利金属制品有限公司 Novel sheet metal cutting machine
CN107649737A (en) * 2017-10-18 2018-02-02 江苏天宏自动化科技有限公司 A kind of aluminium alloy wheel hub automatic burr removing unit
CN108724486B (en) * 2018-01-23 2024-06-11 保文明 Horizontal multi-cutter simultaneous cutting and one-slit material cutting machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131674Y (en) * 1992-05-28 1993-05-05 蔡开炎 Cutting machine with cutting disc
CN2820480Y (en) * 2005-08-11 2006-09-27 林天华 Saw machine unit of bridge cutter
KR100841731B1 (en) * 2007-10-18 2008-06-27 바위산업 주식회사 Boundary Stone Cutting Machine
CN201427364Y (en) * 2009-05-25 2010-03-24 福建省晋江市盛达机器有限公司 Special-shaped line cutting machine
CN201685288U (en) * 2010-04-08 2010-12-29 林天华 Bridge cutting machine component
CN201769235U (en) * 2010-07-23 2011-03-23 福建省闽侯长荣石制品有限公司 Multi-cutter edge cutting machine
CN203401613U (en) * 2013-07-18 2014-01-22 福建盛达机器股份公司 Edge trimmer of arc slab

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131674Y (en) * 1992-05-28 1993-05-05 蔡开炎 Cutting machine with cutting disc
CN2820480Y (en) * 2005-08-11 2006-09-27 林天华 Saw machine unit of bridge cutter
KR100841731B1 (en) * 2007-10-18 2008-06-27 바위산업 주식회사 Boundary Stone Cutting Machine
CN201427364Y (en) * 2009-05-25 2010-03-24 福建省晋江市盛达机器有限公司 Special-shaped line cutting machine
CN201685288U (en) * 2010-04-08 2010-12-29 林天华 Bridge cutting machine component
CN201769235U (en) * 2010-07-23 2011-03-23 福建省闽侯长荣石制品有限公司 Multi-cutter edge cutting machine
CN203401613U (en) * 2013-07-18 2014-01-22 福建盛达机器股份公司 Edge trimmer of arc slab

Also Published As

Publication number Publication date
CN103350459A (en) 2013-10-16

Similar Documents

Publication Publication Date Title
CN103350459B (en) A kind of arc slab edge trimmer
CN203887956U (en) Multifunctional woodworking sawing and milling hand saw
WO2020215509A1 (en) Cutting device for textile cloth production
CN203401613U (en) Edge trimmer of arc slab
CN103008787B (en) Automatic tooth grinding machine for precision hard alloy band saw blade
CN108465855A (en) A kind of multi-functional edge milling machines
CN210188687U (en) Sawing machine for steel processing
CN102873391B (en) Circle shear device for both trimming and slitting of aluminum strips
CN202506897U (en) Double-end plate corner sawing machine
US3642040A (en) Workpiece-sensing milling apparatus
CN210160475U (en) Side milling machine
CN219966628U (en) Adjustable mechanism of high-efficiency horizontal band sawing machine
CN204913266U (en) Numerical control is driven material brill and is milled all -in -one
CN209051211U (en) A kind of high-precision CNC carving machine
CN202779996U (en) Circle shear device with dual purposes of side shearing and segmentation for aluminum strip
CN110356153A (en) A kind of multifunctional vertical stone-material carving machine
CN209364830U (en) A kind of precision panel saw of automatic positioning
CN207057738U (en) A kind of industrial production cutting machine
CN203156161U (en) Precision carbide band saw blade automatic gear grinding machine
CN208019482U (en) Automatic feeding milling double flat device
CN112139596A (en) An efficient, safe and precise cutting machine
CN113664287B (en) A table saw for precision cutting
CN219581836U (en) A cutting device for linear beam production and processing
CN203401611U (en) Workbench assembly of arc slab edge trimmer
CN216265010U (en) Grinding device for sawing flat steel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant