CN105772509B - A kind of hot-rolling metal composite plate pre-straightening roller system - Google Patents
A kind of hot-rolling metal composite plate pre-straightening roller system Download PDFInfo
- Publication number
- CN105772509B CN105772509B CN201610285657.6A CN201610285657A CN105772509B CN 105772509 B CN105772509 B CN 105772509B CN 201610285657 A CN201610285657 A CN 201610285657A CN 105772509 B CN105772509 B CN 105772509B
- Authority
- CN
- China
- Prior art keywords
- composite plate
- smoothing roll
- power transmission
- transmission shaft
- straightening unit
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The present invention relates to composite plate to align field, there is provided a kind of hot-rolling metal composite plate pre-straightening roller system, including middle resistance straightening unit, 2 avris resistance straightening units；Middle resistance straightening unit, avris resistance straightening unit include upper and lower 2 smoothing rolls respectively；The opening degree of the whole height of middle resistance straightening unit and 2 smoothing rolls is adjustable；The opening degree of position and 2 smoothing roll of the avris resistance straightening unit along sheet material direction of feed is adjustable；Beneficial effects of the present invention are：The height and position of resistance straightening unit effectively eliminates the large deflection flexure of composite plate along its length among adjustment；Adjust upper and lower smoothing roll opening degree can effectively eliminate along strip width direction large deflection flexure；The self-regulation design of smoothing roll piece ensures that the retaining surface during pre-straightening contacts smoothing roll piece with composite plate, avoided large contacting stress；Middle resistance straightening unit whole height and two roller opening degrees are adjustable, and two avris resistance straightening unit lengthwise positions and two roller opening degrees are adjustable, adapt to that different incoming profiles, plate be wide and flatness defect.
Description
Technical field
The invention belongs to composite plate straightening technology field, more particularly to a kind of hot-rolling metal composite plate pre-straightening roller system.
Background technology
At present, application of the hot-rolling metal composite plate in the industries such as shipbuilding, oil, chemical industry is increasingly extensive, to its quality
It is required that also increasingly improve.Composite metal plate is due to the physical property of interlayer materials and the difference of mechanical property, composite plate section
Unsymmetric structure, it is caused generally to occur the two-way wooden dipper song defect of plate shape in process of production（As shown in Figure 1）.Plate shape it is two-way
Wooden dipper song defect shows as the wooden dipper song that composite plate all has deep camber along plate length with plate width direction, causes edge and the middle part of composite plate
It is poor in the presence of a larger amount of deflection, the opening degree of straightener is tended to exceed, causes equipment for straightening not bite；And composite plate is
Allow to smoothly enter straightener, traditional replaceable straightening roller system is also merely capable of correcting the flexure of composite plate length direction, to composite plate
The correction ability of the deep camber flexure of width is extremely limited；Therefore need to carry out pre-straightening processing to it.
Currently for the pre-straightening equipment or blank out of hot-rolling metal composite plate.
The content of the invention
The purpose of the present invention is exactly overcome the deficiencies in the prior art, is existed in the direction of the width for hot-rolling metal composite plate
The problem of large deflection difference causes straightener not bite, there is provided a kind of hot-rolling metal composite plate pre-straightening roller system, can effectively eliminate
The large deflection flexure of composite plate in the width direction, ensures smoothly biting for follow-up equipment for straightening, while adjust middle resistance straightening unit
Height and position can effectively eliminate the overall flexure of composite plate length direction.
A kind of hot-rolling metal composite plate pre-straightening roller system of the present invention, including middle resistance straightening unit, 2 avris resistance straightening units；
The middle resistance straightening unit, avris resistance straightening unit include upper and lower 2 smoothing rolls respectively；The overall height of the middle resistance straightening unit
The opening degree of degree and 2 smoothing rolls is adjustable；Position and 2 smoothing rolls of the avris resistance straightening unit along composite plate direction of feed
Opening degree it is adjustable.
Further, the upper and lower smoothing roll respectively includes power transmission shaft, 2 smoothing roll pieces and sleeve, 2 smoothing rolls
Piece passes through sleeve and corresponding transmission axis connection.
Further, the smoothing roll piece 2 is assemblied on the power transmission shaft in groups；When 2 smoothing rolls of upper straightening roll
When piece is assemblied in the both ends of corresponding power transmission shaft, 2 smoothing roll pieces of lower smoothing roll are assemblied in the middle part of corresponding power transmission shaft；Rectified when upper
When 2 smoothing roll pieces of straight roller are assemblied in the middle part of corresponding power transmission shaft, 2 smoothing roll pieces of lower smoothing roll are assemblied in corresponding transmission
The both ends of axle.
Further, 1 is provided with the power transmission shaft in axial keyway, the sleeve diameter and the power transmission shaft
Footpath coordinates in gap, plays axially position to the smoothing roll piece.
Further, the smoothing roll piece includes internal spherical cage, steel ball and outer collars.
Further, the external diameter of the internal spherical cage passes through the steel ball with being provided with groove on the internal diameter of the outer collars
Coordinate, have and keep the self-regulating function that the outer collars contacts with compound plate face in real time；The internal spherical cage and the power transmission shaft
Coordinate for gap, inner radius is provided with keyway, is realized by key and power transmission shaft along the circumferentially positioned of power transmission shaft.
The protrusion of the present invention has the beneficial effect that：
1st, the large deflection of composite plate along its length can be effectively eliminated by the height and position of resistance straightening unit among adjusting to scratch
It is bent；
2nd, two groups of smoothing roll pieces are assemblied in the both ends or middle part of upper and lower smoothing roll respectively；By adjusting in resistance straightening unit up and down
The opening degree of smoothing roll makes composite plate form plastic bending in the width direction, can effectively eliminate and be scratched along the big of composite plate width
Degree flexure；
3rd, the self-regulation of smoothing roll piece is designed to ensure that smoothing roll piece and the composite plate retaining surface during pre-straightening connect
Touch, avoid excessive contact stress from damaging composite surface；
4th, the sleeve of different size can adjust rigging position of the smoothing roll piece on smoothing roll, different compound to adapt to
Plate plate is wide；
5th, the whole height of middle resistance straightening unit and two roller opening degrees are adjustable, and both sides aligning unit lengthwise position and two rollers are opened
Mouth degree is adjustable, adapts to different incoming profile and flatness defect.
Brief description of the drawings
Fig. 1 show the two-way wooden dipper song defect schematic diagram of hot-rolling metal composite plate.
Fig. 2 show a kind of hot-rolling metal composite plate pre-straightening roller system overall structure schematic perspective view of the embodiment of the present invention.
Fig. 3 show resistance straightening unit adjustment mode schematic diagram.
Fig. 4 show smoothing roll structural representation.
Fig. 5 show smoothing roll chip architecture schematic diagram.
Fig. 6 show smoothing roll piece and composite plate contact angle self-regulation schematic diagram.
Fig. 7 show composite metal plate width case of bending schematic diagram in roller system.
Fig. 8 show composite metal plate length direction case of bending schematic diagram in roller system.
In figure：Smoothing roll, 3- centres resistance straightening unit, 4- avris resistance straightening unit, 5- power transmission shafts, 6- under 1- upper straightening rolls, 2-
Sleeve, 7- smoothing rolls piece, 8- internal spherical cages, 9- outer collars, 10- steel balls, 11- composite plates initial deflection state, 12- in the width direction
Composite plate straightening process deflected, 13- composite plates initial deflection state, 14- composite plates edge along its length in the width direction
Length direction straightening process deflected.
Embodiment
The specific embodiment of the invention is described in detail below in conjunction with specific accompanying drawing.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, and they can be mutually combined so as to reach
To superior technique effect.In the accompanying drawing of following embodiments, identical label that each accompanying drawing occurs represent identical feature or
Person's part, it can be applied in different embodiments.
As shown in Figure 2,3, a kind of hot-rolling metal composite plate pre-straightening roller system of the embodiment of the present invention, including middle resistance straightening unit
3rd, 2 avris resistance straightening units 4；The middle resistance straightening unit 3, avris resistance straightening unit 4 include upper and lower 2 smoothing rolls 1,2 respectively；
The opening degree of the whole height of the middle resistance straightening unit 3 and 2 smoothing rolls 1,2 is adjustable；The avris resistance straightening unit 4 is along again
The opening degree of the position of plywood direction of feed and 2 smoothing rolls 1,2 is adjustable.
As shown in Figure 4, it is preferred that the upper and lower smoothing roll 1,2 respectively includes 5,2 smoothing roll pieces 7 of power transmission shaft and set
6,2 smoothing roll pieces 7 of cylinder are connected by sleeve 6 with corresponding power transmission shaft 5.
Preferably, the smoothing roll piece 7 two is assemblied on the power transmission shaft 5 in groups；When 2 alignings of upper straightening roll 1
When roller piece 7 is assemblied in the both ends of corresponding power transmission shaft 5,2 smoothing roll pieces 7 of lower smoothing roll 2 are assemblied in corresponding power transmission shaft 5
Portion；When 2 smoothing roll pieces 7 of upper straightening roll 1 are assemblied in the middle part of corresponding power transmission shaft 5,2 smoothing roll pieces 7 of lower smoothing roll 2
It is assemblied in the both ends of corresponding power transmission shaft 5.
Preferably, 1 keyway through axial direction, the internal diameter of sleeve 6 and the power transmission shaft 5 are provided with the power transmission shaft 5
Internal diameter coordinates in gap, plays axially position to the smoothing roll piece 7, while it is in gap to be used cooperatively with the diameter of power transmission shaft 5
The sleeve 6 with different length coordinated, two smoothing roll pieces 7 are enable to be positioned at the optional position of the axial direction of power transmission shaft 5.
As shown in Figure 5,6, it is preferred that the smoothing roll piece 7 includes internal spherical cage 8, steel ball 10 and outer collars 9；The interior ball
The external diameter of cage 8 is coordinated by the steel ball 10, had described in keeping in real time with being provided with groove on the internal diameter of the outer collars 9
The self-regulating function that outer collars 9 contacts with compound plate face；The internal spherical cage 8 coordinates with the power transmission shaft 5 for gap, and inner radius is opened
There is keyway, realized by key and power transmission shaft along the circumferentially positioned of power transmission shaft；Smoothing roll piece 7 mainly realize to the longitudinal direction of composite plate and
Transverse curvature is corrected, and is rotated and driven composite plate to realize the function of continuous feed, while needs to have the bending with composite plate
State and the contact angle self-regulating function contacted at any time with its retaining surface.First, internal spherical cage 8 and power transmission shaft 5 are real by key connection
The synchronous axial system of existing internal spherical cage 8 and power transmission shaft 5；Secondly, internal spherical cage 8 is driven reality with being provided with raceway on outer collars 9 by steel ball 10
The now synchronous axial system of outer collars 9 and internal spherical cage 8, then composite plate is driven to realize continuous feed, the structure can also make internal spherical cage 8
Realize and be driven under conditions of axially in any angle with outer collars 9, can then ensure bending of the outer collars 9 with composite plate
State and the state contacted at any time with its retaining surface, realize the contact angle self-regulating function of smoothing roll piece 7.
In use, according to the composite plate width of composite plate and in the width direction the defects of form, it is determined that smoothing roll 1,2 up and down
The rigging position and assembling form of respective smoothing roll piece 7, if compound board defect form is the two-way recessed defect shown in a in Fig. 1,
Then the smoothing roll piece 7 of upper straightening roll 1 is assemblied in the both ends of power transmission shaft 5, the smoothing roll of lower smoothing roll 2 in all resistance straightening units 3,4
Piece 7 is assemblied in the middle part of power transmission shaft 5；If compound board defect form is the two-way protrusion defect shown in b in Fig. 1, all alignings are single
The smoothing roll piece 7 of upper straightening roll 1 in member 3,4 is assemblied in the middle part of power transmission shaft 5, and the smoothing roll piece 7 of lower smoothing roll 2 is assemblied in transmission
The both ends of axle 5, then pass through computer or each resistance straightening unit 3 of manual mode adjustment, the opening degree of 4 upper and lower smoothing rolls 1,2；Its effect
It is composite plate is formed the plastic bending state opposite with genetic defects bending direction in the width direction in each resistance straightening unit 3,4
（As shown in fig. 7, wherein 11 be that initial deflection state, 12 are composite plate straightening process in the width direction to composite plate in the width direction
Deflected）, so as to realize the elimination for rectifying rear composite plate width flexure.Then specification that will be according to composite plate and edge
The defects of length direction form, pass through computer or manual mode adjustment among resistance straightening unit 3 whole height position and both sides
Position of the side resistance straightening unit 4 along composite plate direction of feed；Its effect be by the difference of three resistance straightening units 3,4 height and positions,
Composite plate is set to form the plastic bending state opposite with genetic defects bending direction along its length（As shown in figure 8, wherein 13 are
Initial deflection state, 14 are composite plate straightening process deflected along its length to composite plate along its length）, it is strong so as to realize
The elimination that composite plate is bent along its length afterwards；Meanwhile by adjusting the lengthwise position of two avris resistance straightening units 4, make pre-straightening
Roller system forms the roll spacing needed according to different composite plate specifications, so as to ensure carrying energy of the roller system for all size composite plate
Power.Finally, the power transmission shaft 5 for each smoothing roll 1,2 being rotated by drive device realizes the continuous feed straightening process of composite plate.
The protrusion of the present invention has the beneficial effect that：
1st, the large deflection of composite plate along its length can be effectively eliminated by the height and position of resistance straightening unit among adjusting to scratch
It is bent；
2nd, two groups of smoothing roll pieces are assemblied in the both ends or middle part of upper and lower smoothing roll respectively；By adjusting in resistance straightening unit up and down
The opening degree of smoothing roll makes composite plate form plastic bending in the width direction, can effectively eliminate and be scratched along the big of composite plate width
Degree flexure；
3rd, the self-regulation of smoothing roll piece is designed to ensure that smoothing roll piece and the composite plate retaining surface during pre-straightening connect
Touch, avoid excessive contact stress from damaging composite surface；
4th, the sleeve of different size can adjust rigging position of the smoothing roll piece on smoothing roll, different compound to adapt to
Plate plate is wide；
5th, the whole height of middle resistance straightening unit and two roller opening degrees are adjustable, and both sides aligning unit lengthwise position and two rollers are opened
Mouth degree is adjustable, adapts to different incoming profile and flatness defect.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment be it is exemplary, no
Restriction that should be using the embodiments herein as interest field of the present invention.
Claims (4)
1. a kind of hot-rolling metal composite plate pre-straightening roller system, it is characterised in that single including middle resistance straightening unit, 2 avris alignings
Member；The middle resistance straightening unit, avris resistance straightening unit include upper and lower 2 smoothing rolls respectively；The entirety of the middle resistance straightening unit
The opening degree of height and 2 smoothing rolls is adjustable；Position and 2 alignings of the avris resistance straightening unit along composite plate direction of feed
The opening degree of roller is adjustable；
The upper and lower smoothing roll respectively includes power transmission shaft, 2 smoothing roll pieces and sleeve, 2 smoothing roll pieces by sleeve with it is right
The transmission axis connection answered；
The smoothing roll piece 2 is assemblied on the power transmission shaft in groups；When 2 smoothing roll pieces of upper straightening roll are assemblied in corresponding biography
During the both ends of moving axis, 2 smoothing roll pieces of lower smoothing roll are assemblied in the middle part of corresponding power transmission shaft；When 2 alignings of upper straightening roll
When roller piece is assemblied in the middle part of corresponding power transmission shaft, 2 smoothing roll pieces of lower smoothing roll are assemblied in the both ends of corresponding power transmission shaft.
2. hot-rolling metal composite plate pre-straightening roller system as claimed in claim 1, it is characterised in that be provided with 1 on the power transmission shaft
The individual keyway through axial direction, the sleeve diameter coordinate in gap with the power transmission shaft internal diameter, the smoothing roll piece are risen axially
Positioning action.
3. hot-rolling metal composite plate pre-straightening roller system as claimed in claim 1, it is characterised in that the smoothing roll piece includes interior
Cage, steel ball and outer collars.
4. hot-rolling metal composite plate pre-straightening roller system as claimed in claim 3, it is characterised in that the external diameter of the internal spherical cage with
Groove is provided with the internal diameter of the outer collars, is coordinated by the steel ball, has and keeps the outer collars and composite plate in real time
The self-regulating function of face contact；The internal spherical cage coordinates with the power transmission shaft for gap, and inner radius is provided with keyway, by key with passing
Moving axis is realized along the circumferentially positioned of power transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285657.6A CN105772509B (en) | 2016-04-29 | 2016-04-29 | A kind of hot-rolling metal composite plate pre-straightening roller system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285657.6A CN105772509B (en) | 2016-04-29 | 2016-04-29 | A kind of hot-rolling metal composite plate pre-straightening roller system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105772509A CN105772509A (en) | 2016-07-20 |
| CN105772509B true CN105772509B (en) | 2017-12-05 |
Family
ID=56400401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610285657.6A Active CN105772509B (en) | 2016-04-29 | 2016-04-29 | A kind of hot-rolling metal composite plate pre-straightening roller system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105772509B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042783A (en) * | 2021-11-30 | 2022-02-15 | 一重集团大连工程技术有限公司 | Aluminum alloy profile two-roller straightening machine with rib plates |
| CN114160610A (en) * | 2021-11-30 | 2022-03-11 | 一重集团大连工程技术有限公司 | Aluminum alloy section bar four-roller straightening machine with rib plates |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59209423A (en) * | 1983-05-12 | 1984-11-28 | Ube Ind Ltd | Straightening machine for thick plate |
| CN201333469Y (en) * | 2008-12-31 | 2009-10-28 | 山东宏康机械制造有限公司 | Single-roller-moving type metal strip convex flattener |
| CN202028640U (en) * | 2011-02-28 | 2011-11-09 | 东莞裕升薄板有限公司 | Straightening and withdrawal unit for straightening galvanized sheets |
| CN202638978U (en) * | 2011-12-29 | 2013-01-02 | 二重集团（德阳）重型装备股份有限公司 | Variable roller spacing straightener |
| CN203599285U (en) * | 2013-12-24 | 2014-05-21 | 北京京诚之星科技开发有限公司 | Variable roll pitch straightening machine |
| CN203695655U (en) * | 2013-12-06 | 2014-07-09 | 常州金安冶金设备有限公司 | Straightening roller adjusting device |
| CN104438460A (en) * | 2013-09-24 | 2015-03-25 | 宝山钢铁股份有限公司 | Flattening and withdrawing-straightening method for strip steel |
| CN105290110A (en) * | 2015-12-04 | 2016-02-03 | 中冶南方工程技术有限公司 | Compound straightener for cold and hard strip steel |
| CN205096252U (en) * | 2015-10-30 | 2016-03-23 | 中冶赛迪工程技术股份有限公司 | Draw strong descaling mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7185519B2 (en) * | 2003-09-15 | 2007-03-06 | The Bradbury Company, Inc. | Methods and apparatus for monitoring and conditioning strip material |
-
2016
- 2016-04-29 CN CN201610285657.6A patent/CN105772509B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59209423A (en) * | 1983-05-12 | 1984-11-28 | Ube Ind Ltd | Straightening machine for thick plate |
| CN201333469Y (en) * | 2008-12-31 | 2009-10-28 | 山东宏康机械制造有限公司 | Single-roller-moving type metal strip convex flattener |
| CN202028640U (en) * | 2011-02-28 | 2011-11-09 | 东莞裕升薄板有限公司 | Straightening and withdrawal unit for straightening galvanized sheets |
| CN202638978U (en) * | 2011-12-29 | 2013-01-02 | 二重集团（德阳）重型装备股份有限公司 | Variable roller spacing straightener |
| CN104438460A (en) * | 2013-09-24 | 2015-03-25 | 宝山钢铁股份有限公司 | Flattening and withdrawing-straightening method for strip steel |
| CN203695655U (en) * | 2013-12-06 | 2014-07-09 | 常州金安冶金设备有限公司 | Straightening roller adjusting device |
| CN203599285U (en) * | 2013-12-24 | 2014-05-21 | 北京京诚之星科技开发有限公司 | Variable roll pitch straightening machine |
| CN205096252U (en) * | 2015-10-30 | 2016-03-23 | 中冶赛迪工程技术股份有限公司 | Draw strong descaling mill |
| CN105290110A (en) * | 2015-12-04 | 2016-02-03 | 中冶南方工程技术有限公司 | Compound straightener for cold and hard strip steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105772509A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105772509B (en) | A kind of hot-rolling metal composite plate pre-straightening roller system | |
| CN201394595Y (en) | Wide-thick plate finishing straightening machine | |
| CN105598214A (en) | Straight roller type pipe straightening machine and method | |
| CN201735640U (en) | Stretch-bend straightening machine for metal bar stock | |
| CN104261055B (en) | Aluminum sheet calendaring conveying mechanism and heating furnace using same | |
| WO2022134492A1 (en) | Cold roll forming method for special-shaped rod having mounting grooves | |
| CN104307924A (en) | Square rectangular tube cold roll forming method | |
| CN102049415A (en) | Roller, apparatus for rolling steel rail and steel rail rolling method | |
| CN210475091U (en) | C-shaped piece roll forming system | |
| CN206966320U (en) | Roll the special-shaped roll of pore-forming | |
| CN205926721U (en) | Camber arch machine | |
| CN111940511B (en) | Pipe removing structure and pipe removing machine | |
| CN202824255U (en) | Leveling machine | |
| CN103394553A (en) | Efficient steel tube straightening device | |
| CN204866914U (en) | Evener | |
| CN207107729U (en) | A kind of roller for avoiding belt feeder belt deviation | |
| CN109821932A (en) | Crawler belt steel roller low temperature apparatus for correcting | |
| CN207642069U (en) | A kind of geotechnical engineering angle pipe equipment | |
| US20140331730A1 (en) | Rolling device and the method thereof | |
| JP5572958B2 (en) | T-shaped steel manufacturing equipment and manufacturing method | |
| CN206702450U (en) | Rectangular tube production line pipe seam welder | |
| CN206936011U (en) | A kind of roller assembly for angle steel splitting rolling | |
| CN206405205U (en) | A kind of roller seat positioner of straightener | |
| CN105689604A (en) | Steel bar bender with improved conveying rollers | |
| CN211191524U (en) | Inverted triangle forming device for galvanized steel sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200513 Address after: 528300 No.2, Zhihui Road, Daliang, Shunde District, Foshan City, Guangdong Province Patentee after: Shunde Graduate School of Beijing University of science and technology Address before: 100083 Haidian District, Xueyuan Road, No. 30, Patentee before: University OF SCIENCE AND TECHNOLOGY BEIJING |