CN102211110A - Servo screwdown continuous rolling frame with mill roll gap control mechanism - Google Patents
Servo screwdown continuous rolling frame with mill roll gap control mechanism Download PDFInfo
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- CN102211110A CN102211110A CN2010106049174A CN201010604917A CN102211110A CN 102211110 A CN102211110 A CN 102211110A CN 2010106049174 A CN2010106049174 A CN 2010106049174A CN 201010604917 A CN201010604917 A CN 201010604917A CN 102211110 A CN102211110 A CN 102211110A
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Abstract
The invention relates to a servo screwdown continuous rolling frame with a mill roll gap control mechanism. The servo screwdown continuous rolling frame comprises a roll frame, and is characterized in that: each group of roll frame is provided with three sets of rolls; each set of roll is provided with a main hydraulic cylinder and a balancing hydraulic cylinder which are controlled by a servo valve closed-loop system; and three C-shaped swing arms with hinges are distributed at interval of 120 degrees in the roll frame; and the C-shaped swing arms rotating around hinged points are provided with rolls and roll bearing blocks. The servo screwdown continuous rolling frame has the advantages that: the servo frame can reduce the space, reduce crop loss, improve metal yield, reduce core rod consumption and ensure short contact time of a hollow billet and a core rod so as to prolong the service life of the core rod; and the using number of core bars for each group of products can be reduced by 1/3.
Description
Technical field
The invention belongs to milling train, relate in particular to a kind of servo tandem rolling frame of depressing that has the mill roll-gap controlling organization.
Background technology
The milling train screwdown gear is to act directly on the bearing block of roll at present, and each roll has two leading screws or hydraulic cylinder, and roll gap can not be adjusted after roll stand was in place, during the draught pressure excess load, card or roll breakage are rolled in generation, make whole production line stop production, roll stand is changed wastes time and energy.Do not have the closed-loop control of roll gap, can not adjust and control very difficult, rolling tube quality aborning at random and be difficult to guarantee that rolling tool consumes high, recovery rate of iron is lower.
Summary of the invention
The present invention is in order to overcome deficiency of the prior art, a kind of servo tandem rolling frame of depressing that has the mill roll-gap controlling organization is provided, adopting servo-hydraulic to depress control changes hydraulic pressure into by electrical control and electricly jointly controls, can realize the roll gap adjustment modelization, improved wall thickness accuracy greatly, reduced hollow forging end to end with the wall thickness variation at middle part.
The present invention for achieving the above object, be achieved through the following technical solutions, a kind of servo tandem rolling frame of depressing that has the mill roll-gap controlling organization, comprise roll stand, it is characterized in that: described every group of roll stand is provided with three cover rolls, main hydraulic cylinder and a balance hydraulic cylinder of a servo valve closed-loop system control are housed respectively on every cover roll, and 120 degree distribute three with hinged C type swing arm in the described roll stand, are equipped with roll and roll chock in the C type swing arm of hinge rotation.
Described main hydraulic cylinder front end is provided with the servo valve of control roll location, and the servo valve of described hydraulic cylinder front end is connected with main cavity pressure sensor, and hydraulic cylinder piston is connected with linear position sensor.
Beneficial effect: adopt servo frame can reduce spacing, reduce crop loss, improve recovery rate of iron;
Can reduce plug consumption, hollow forging and plug are short time of contact, thus the service life of having improved plug, and the usage quantity of every set product plug can reduce 1/3rd.Plug consumption is reduced to about 1.1kg per ton; Help metal deformation and extend, reduce transversely deforming, wall thickness is more even, and steel pipe surfaces externally and internally quality and dimensional accuracy are greatly improved; Owing to adopt the control of servo frame and retained mandrel, allow to strengthen the diameter of plug, created condition for many specifications production, can produce the bigger steel pipe of external diameter, in addition, can also rolling thicker or thinner steel pipe.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation that the swing arm of C type is connected with servo valve.
Among the figure: 1, main hydraulic cylinder 2, balance hydraulic cylinder 3, C type swing arm 4, servo valve 5, pressure sensor 6, linear position sensor 7, roll 8, roll stand 9, roll chock.
The specific embodiment
Below in conjunction with preferred embodiment, to details are as follows according to the specific embodiment provided by the invention: see accompanying drawing for details, a kind of servo tandem rolling frame of depressing that has the mill roll-gap controlling organization, comprise roll stand 8, described every group of roll stand is provided with three cover rolls, main hydraulic cylinder 1 and a balance hydraulic cylinder 2 of a servo valve closed-loop system control are housed respectively on every cover roll, 120 degree distribute three with hinged C type swing arm 3 in the described roll stand, are equipped with roll 7 and roll chock 9 in the C type swing arm of hinge rotation.Described hydraulic cylinder front end is provided with the servo valve 4 of control roll location, and the servo valve of described main hydraulic cylinder front end is connected with main cavity pressure sensor 5, and hydraulic cylinder piston is connected with linear position sensor 6.
Every group of frame has three cover rolls; A main hydraulic cylinder, a balance hydraulic cylinder are housed respectively on every cover roll.The technological action of each main hydraulic cylinder is controlled by a servo valve closed-loop system, guarantees flexibility and uniformity that roll is adjusted, and reaches the tandem mill roll gap purpose of control automatically.
120 degree distribute three with hinged C type swing arm in roll stand, and it can rotate around hinge.Roll and roll chock are directly installed in the swing arm of C type.Control requires small angle of swing fast according to roll gap in the operation of rolling, and the roll gap that reaches roll is adjusted automatically.Can the swing arm of quick rotation C type roll and roll bearing base device be shifted out frame during the frame roll change, this structure makes frame become simple and reliable, is convenient to roll change, has saved roll changing time.
Operation principle:
Depress frame and adopt unique design, guaranteed roll adjustment flexibility and uniformity.The control of hydraulic pressure roll gap is the fast accurate milling train depress control system of band closed-loop control.Gather the draught pressure and the position signalling of feedback, calculate actual roll gap and set-point and compare, deviation is carried out proportional integral regulate, thereby realize the accurate control of position.The hydraulic pressure cylinder head acts directly on " C " shape arm, and each roll all has one to depress head.
Hydraulic pressure is depressed the pattern that pressure, position closed loop control are adopted in control.Dress pressure power transmission sensor, position sensor in the servo hydraulic cylinder, it can control the position of cylinder head at any time, detects in-cylinder pressure simultaneously and changes.By feedback signal numerical value, system is rolled calculation of parameter and check.When each root hollow forging is about to enter milling train, current situation is calculated and the following setting value that passes once more, after entering milling train, recomputate and adjust the setting of back frame according to the real measured data of front frame.When detecting the pressure overload, signal feeds back to system immediately, and hydraulic fluid port oil extraction decompression reaches the effect of protection equipment.
Each roll all is connected with a default specialized high-speed computer control system, can controls and keep the servo desired location of depressing the tandem rolling frame.Satisfy simultaneously that the roll gap controlling organization realizes that synchronous hydraulic is depressed, roll location location, the mensuration of impacting compensation (wall thickness that can reduce the tube head tail is poor) and draught pressure and comparison (setting safe opening degree) or milling train overload, emergency light, position locking and rapid data is collected and the function of feedback.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. servo tandem rolling frame of depressing that has the mill roll-gap controlling organization, comprise roll stand, it is characterized in that: described every group of roll stand is provided with three cover rolls, main hydraulic cylinder and a balance hydraulic cylinder of a servo valve closed-loop system control are housed respectively on every cover roll, 120 degree distribute three with hinged C type swing arm in the described roll stand, are equipped with roll and roll chock in the C type swing arm of hinge rotation.
2. the servo tandem rolling frame of depressing that has the mill roll-gap controlling organization according to claim 1, it is characterized in that: described main hydraulic cylinder front end is provided with the servo valve of control roll location, the servo valve of described hydraulic cylinder front end is connected with main cavity pressure sensor, and hydraulic cylinder piston is connected with linear position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049174A CN102211110A (en) | 2010-12-24 | 2010-12-24 | Servo screwdown continuous rolling frame with mill roll gap control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049174A CN102211110A (en) | 2010-12-24 | 2010-12-24 | Servo screwdown continuous rolling frame with mill roll gap control mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102211110A true CN102211110A (en) | 2011-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106049174A Pending CN102211110A (en) | 2010-12-24 | 2010-12-24 | Servo screwdown continuous rolling frame with mill roll gap control mechanism |
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| CN (1) | CN102211110A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441570A (en) * | 2011-10-26 | 2012-05-09 | 太原重工股份有限公司 | Small hydraulic bin of continuous tube mill |
| CN102861766A (en) * | 2012-09-20 | 2013-01-09 | 衡阳华菱钢管有限公司 | Square tube rolling device, square tube sizing mill with same and production method of square tube |
| CN104338760A (en) * | 2014-11-04 | 2015-02-11 | 辽宁天丰特殊工具制造有限公司 | Sharpening device for mechanical press-in type continuous mill of seamless tube |
| CN107321796A (en) * | 2017-08-11 | 2017-11-07 | 鑫鹏源智能装备集团有限公司 | A kind of roll stand attachment means and method |
| CN111545573A (en) * | 2020-06-22 | 2020-08-18 | 太原科技大学 | Roller rotary rolling mill |
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| CN1079923A (en) * | 1992-04-15 | 1993-12-29 | 因斯因勒申蒂工程有限公司 | A kind of rolling-mill housing that is used to have the conventional mill of three or more adjustable driven rolls |
| CN1293600A (en) * | 1998-03-18 | 2001-05-02 | Sms德马格英斯股份公司 | Rolling stand having three or more adjustable arms |
| CN1403217A (en) * | 2000-02-24 | 2003-03-19 | 石川岛播磨重工业株式会社 | Control method for hydraulic pinch roll and controll apparatus thereof |
| DE102005042835B3 (en) * | 2005-09-09 | 2007-05-31 | Sms Meer Gmbh | Rolling mill for manufacturing tube and rod, includes rollers in roller frame located in stand, with adjusters which can be swung or translated and locked in position |
| CN201135993Y (en) * | 2007-12-20 | 2008-10-22 | 中冶京诚工程技术有限公司 | Three-high mill |
| CN201988561U (en) * | 2010-12-24 | 2011-09-28 | 天津君晟成套设备有限公司 | Servo screwdown continuous rolling mill stand provided with mill roll gap control mechanism |
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2010
- 2010-12-24 CN CN2010106049174A patent/CN102211110A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079923A (en) * | 1992-04-15 | 1993-12-29 | 因斯因勒申蒂工程有限公司 | A kind of rolling-mill housing that is used to have the conventional mill of three or more adjustable driven rolls |
| CN1293600A (en) * | 1998-03-18 | 2001-05-02 | Sms德马格英斯股份公司 | Rolling stand having three or more adjustable arms |
| CN1403217A (en) * | 2000-02-24 | 2003-03-19 | 石川岛播磨重工业株式会社 | Control method for hydraulic pinch roll and controll apparatus thereof |
| DE102005042835B3 (en) * | 2005-09-09 | 2007-05-31 | Sms Meer Gmbh | Rolling mill for manufacturing tube and rod, includes rollers in roller frame located in stand, with adjusters which can be swung or translated and locked in position |
| CN201135993Y (en) * | 2007-12-20 | 2008-10-22 | 中冶京诚工程技术有限公司 | Three-high mill |
| CN201988561U (en) * | 2010-12-24 | 2011-09-28 | 天津君晟成套设备有限公司 | Servo screwdown continuous rolling mill stand provided with mill roll gap control mechanism |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441570A (en) * | 2011-10-26 | 2012-05-09 | 太原重工股份有限公司 | Small hydraulic bin of continuous tube mill |
| CN102861766A (en) * | 2012-09-20 | 2013-01-09 | 衡阳华菱钢管有限公司 | Square tube rolling device, square tube sizing mill with same and production method of square tube |
| CN104338760A (en) * | 2014-11-04 | 2015-02-11 | 辽宁天丰特殊工具制造有限公司 | Sharpening device for mechanical press-in type continuous mill of seamless tube |
| CN107321796A (en) * | 2017-08-11 | 2017-11-07 | 鑫鹏源智能装备集团有限公司 | A kind of roll stand attachment means and method |
| CN107321796B (en) * | 2017-08-11 | 2023-08-29 | 鑫鹏源智能装备集团有限公司 | Roller rack connecting device and method |
| CN111545573A (en) * | 2020-06-22 | 2020-08-18 | 太原科技大学 | Roller rotary rolling mill |
| CN111545573B (en) * | 2020-06-22 | 2021-03-09 | 太原科技大学 | Roller rotary rolling mill |
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Application publication date: 20111012 |