CN104668292A - Rolling mill - Google Patents
Rolling mill Download PDFInfo
- Publication number
- CN104668292A CN104668292A CN201310632079.5A CN201310632079A CN104668292A CN 104668292 A CN104668292 A CN 104668292A CN 201310632079 A CN201310632079 A CN 201310632079A CN 104668292 A CN104668292 A CN 104668292A
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- CN
- China
- Prior art keywords
- milling train
- roll
- controller
- encoder
- roll gap
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a rolling mill. The rolling mill comprises a position detecting device for determining the roll gap area by detecting the relative positions of different rollers; and a controller for receiving the position signal sent by the detecting device, wherein the controller is provided with a roll gap control module, and the roll gap control module can control the relative positions of the different rollers to be changed according to the position signal. The provided rolling mill is capable of completing the adjusting process of the roll gap area by using the automatic control system, and replacing the artificial adjustment in the traditional technology, so that the roller change can be adjusted more timely and accurately, the time of the roller change adjustment is obviously shortened, and the defective rate of the products is reduced.
Description
Technical field
The present invention relates to copper bar manufacturing technology field, more particularly, relate to a kind of milling train.
Background technology
In the prior art, the process that dip coating produces oxygen-free copper bar is by electrolytic copper plate melting, dip-coating, is rolled into bar, and then lopping is put away sports equipment, thus produces electrician's oxygen-free copper bar.
The dip-coating bar that premenstruum (premenstrua), operation obtained is after entering into milling train, and the roll in milling train can be rolled dip-coating bar.Wherein, roll in milling train has many groups, and often organize the equal separate transmission of roll, often organize roll and comprise two rolls cooperatively interacted, dip-coating bar passes through from the gap (referred to as roll gap) between two rolls, namely two rolls extrude dip-coating bar, its cross sectional shape is changed, and it is mutually vertical with extruding dip-coating bar being carried out to different directions between adjacent two groups of rolls, dip-coating bar is in the process of the roll gap by many group rolls, its cross sectional shape and external diameter can constantly change, thus final formation meets the copper bar of process specification, as shown in Figure 1.
In above process, roller rotational speed affects by the cross-sectional sizes of rolled products and shape on the one hand, is subject to the impact of roll gap size on the other hand.This sectional area of sectional area S(being multiplied by theory: the rotary speed V(of any one group of roll and dip-coating bar are by the translational speed of roll gap) the dip-coating bar of any one group of roll rolling is determined by the size of roll gap, namely the size of this sectional area is identical with the size of roll gap) value that obtains is all equal, namely has:
V
1×S
1=V
2×S
2=······=V
n×S
n
Namely in the unit interval, dip-coating bar is identical by the volume flow of arbitrary roll gap.
At present, the control system of milling train adopts discrete component Analog control speed sync, and adopt separated motor DC driven to control, its Direct Current Governor System is that armature voltage is fixed, by the adjustment of adjusting the mode of excitation voltage to realize roller rotational speed, what detect employing with the relative position (i.e. roll gap size) between the different rolls in group is the mode of counter display position numerical value.(shaping finished product copper bar external diameter is needed to change when needing the finished product copper bar gauge lattice produced to change, be called for short and become bar), such as produce diameter and become Φ 8 from Φ 12, just need the position numerical value Φ 12 shown by artificial reference counter, the size of manual adjustments roll gap, until position numerical value becomes Φ 8.Meanwhile, the numerical value that the sectional area S being multiplied by the dip-coating bar of any one group of roll rolling in order to the rotary speed V meeting any one group of roll obtains is constant, the rotary speed of artificial breaker roll simultaneously is also needed to regulate accordingly, whole adjustment process relies on artificial experience to carry out completely, even if but its adjustment difficulty experienced is also very large, and the adjustment process time is long.And in the process of adjustment, milling train is ceaselessly working, and the copper bar size produced in this process does not also meet technological requirement, and it is waste product, and adjustment then causes the problem that percent defective is higher for a long time.
In addition, if be in course of adjustment because roller rotational speeds match is improper and produce blocked shot, then whole production process just needs to restart, and this process is the minimum time will losing more than one hour once, and easily cause the damage of crucible, thus cause larger economic loss.
Therefore, how to shorten the Roller. redress time of milling train, reducing the percent defective of copper bar, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of milling train, it has change bar automatic control system, can shorten the Roller. redress time of milling train, and reduce the percent defective of copper bar.
In order to achieve the above object, the invention provides following technical scheme:
A kind of milling train, it comprises:
By detecting the relative position of different roll to determine the position detecting device of roll gap size;
Can receive the controller of the position signalling that described checkout gear sends, described controller has gap preset module, and described gap preset module can change according to the relative position of the different described roll of described position signalling control.
Preferably, in above-mentioned milling train, described controller also comprises rotational speed control module, and described rotational speed control module can control the rotating speed of described roll in real time according to the size of roll gap.
Preferably, in above-mentioned milling train, described position detecting device is encoder, and the change in location of described roll is driven by screw mandrel, and described encoder realizes the detection to roll gap size by the displacement detecting described screw mandrel.
Preferably, in above-mentioned milling train, described encoder be arranged on drive described screw mandrel movement adjustment motor on, realize detection to described screw mandrel displacement by the rotating cycle detecting the output shaft of described adjustment motor.
Preferably, in above-mentioned milling train, the mode being exported by pulse between described encoder and described controller or input realizes connecting.
Preferably, in above-mentioned milling train, described encoder is absolute value encoder.
Preferably, in above-mentioned milling train, described controller comprises industrial computer and PLC control assembly.
Preferably, in above-mentioned milling train, to be all connected with PROFIBUS by EPA between the roller drive set of described controller and described milling train, between described gap preset module and described rotational speed control module and to realize communication.
Preferably, in above-mentioned milling train, also comprise the carrying out flaw detection device and meter counter that are electrically connected with described controller.
In milling train provided by the invention, it has position detecting device and controller, when needs become bar, the data of the copper bar needing to obtain are selected by controller, controller controls checkout gear and detects the relative position between the different rolls of composition roll gap, and sending to gap preset module by detecting the position data that obtains in the mode of position signalling, gap preset module to be adjusted accordingly with the position controlling roll by contrast input data and position data thus plays the object of shortening regulation time.Milling train provided by the invention, the control system of the adjustment process employing automation of its roll gap area completes, and with the artificial adjustment in alternative conventional art, makes to become bar adjustment more in time with accurate, significantly shorten the time becoming bar adjustment, reduce product percent defective.
In addition, because the whole process becoming bar adjustment has been coordinated automatically by controller and position detecting device completely, its Adjustment precision is higher, avoids the problem producing blocked shot in adjustment process because speeds match is improper, avoid time and economic waste, improve the production efficiency of copper bar.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
In the milling train that Fig. 1 provides for prior art, the set-up mode of many group rolls and dip-coating bar are by the schematic diagram of cross sectional shape after the rolling of difference group roll (in figure, the circle of upper row and rectangle represent is vertically disposedly organize roll more, and what lower row represented is the different cross section shape of dip-coating bar after the rolling of difference group roll);
The cooperation schematic diagram of milling train middle controller, position detecting device, screw mandrel and roll that Fig. 2 provides for the embodiment of the present invention (dotted arrow in figure represent be the control planning of gap preset module and screw mandrel, rotational speed control module and roll).
In upper Fig. 2:
Roll 1, position detecting device 2, controller 3, gap preset module 4, rotational speed control module 5, screw mandrel 6, adjustment motor 7, reducing gear 8.
Detailed description of the invention
The invention provides a kind of milling train, it has change bar automatic control system, can shorten the Roller. redress time of milling train, and reduce the percent defective of copper bar.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2, the milling train that the embodiment of the present invention provides, for rolling copper bar, it comprises:
By detecting the relative position of different roll 1 to determine the position detecting device 2 of roll gap size;
Can the controller 3 of position signalling that sends of receiving detection device, controller 3 has gap preset module 4, and the relative position that gap preset module 4 can control different roll 1 according to position signalling changes.
In the milling train that the present embodiment provides, it has position detecting device 2 and controller 3, when needs become bar, select or input the data of the copper bar needing to obtain by controller 3, controller 3 controls checkout gear and detects the relative position between the different rolls 1 of composition roll gap, and sending to gap preset module 4 by detecting the position data that obtains in the mode of position signalling, gap preset module 4 to be increased with the position controlling roll 1 accordingly by contrast input data and position data or the adjustment that reduces thus play the object of shortening regulation time.
The milling train that the present embodiment provides, the control system of the adjustment process employing automation of its roll gap area completes, and with the artificial adjustment in alternative conventional art, makes to become bar adjustment more in time with accurate, significantly shorten the time becoming bar adjustment, reduce product percent defective.
In addition, because the whole process becoming bar adjustment has been coordinated automatically by controller 3 and position detecting device 2 completely, its Adjustment precision is higher, avoids the problem producing blocked shot in adjustment process because speeds match is improper, avoid time and economic waste, improve the production efficiency of copper bar.
In order to optimize technique scheme further, in the milling train that the present embodiment provides, controller 3 also comprises rotational speed control module 5, and rotational speed control module 5 can coordinate with gap preset module 4, and the size according to roll gap controls the rotating speed of described roll 1 in real time.In order to reduce the regulation time becoming bar further, maximum raising milling train becomes the automaticity of bar, the milling train of the present embodiment, while the adjustment of roll 1 position, can also according to dip-coating bar in the unit interval by the identical principle of the volume flow of arbitrary roll gap, the rotating speed that rotational speed control module 5 meeting controls roll 1 in real time according to the change of roll gap area changes, thus make whole change bar adjustment process realize automation completely, further promptness and the accuracy improving the adjustment of change bar, maximum minimizing regulation time, the percent defective that copper bar is produced is lower.
The milling train that the present embodiment provides, have employed automatic checkout and control system, the position of real-time detection roll is to adjust the size of roll gap in real time, and the speed of adjustment roll in real time, is adjustment rolled products specification full automation, changes manual adjustment step by step in the past, also substantially reduce the time of adjustment simultaneously, decrease the waste of material, improve production efficiency, improve the quality of product.
Preferably, position detecting device 2 is encoder, and the change in location of roll 1 is driven by screw mandrel 6, and encoder realizes the detection to roll gap size by the displacement detecting screw mandrel 6.Encoder be signal (as bit stream) or data are carried out work out, being converted to can in order to the equipment of the signal form of communication, transmission and storage.It straight-line displacement can convert the signal of telecommunication to send to controller 3.In the present embodiment, indirectly obtain the mode of change in location between different roll 1 by detecting the shift length of screw mandrel 6, finally draw the change numerical value of roll gap area, encoder has larger specific aim to this kind of specific type of drive, and it is comparatively suitable for the applied environment of the present embodiment.Further, the small volume of encoder, easy for installation, can testing goal be realized without the need to making larger improvement to the structure of conventional mill.
Concrete, encoder is arranged on the adjustment motor 7 of driving screw mandrel movement, realizes the detection to screw mandrel 6 displacement, as shown in Figure 2 by the rotating cycle of the output shaft detecting adjustment motor 7.In the present embodiment, forward and reverse screw mandrel 6 is directly connected with the roll of two in same group 1, and screw mandrel 6 is then connected with adjustment motor 7 by reducing gear 8, and adjustment motor 7 works, and is reduced by its output shaft rotating speed by reducing gear 8, and then drives screw mandrel 6 to move.Because the adjustment amount of roll gap area is very little, so drive the displacement of the screw mandrel 6 of roll 1 movement also very little, if absolute value encoder is set directly on screw mandrel 6, then because screw mandrel 6 displacement is less, the deviation of the change in location value that absolute value encoder will be caused to detect is relatively large, but, the rotation variable quantity of the output shaft of the adjustment motor 7 be connected by reducing gear 8 with screw mandrel 6 is then much bigger, so absolute value encoder has been arranged on adjustment motor 7, to detect the output shaft rotating variable quantity larger, thus the deviation of the change in location value making absolute value encoder detect is relatively little, make to become bar adjustment more accurate.
Be more preferably, encoder is absolute value encoder, compared with the encoder of other types, absolute value encoder has the function that encoder has position memory, it can shut down front position residing for leading screw by memory device, namely it can remember the size of shutting down front roll gap area, when equipment again start shooting need of work carry out change bar adjustment time, roll gap can be controlled directly carry out the adjustment that increases or reduce by pilot controller, without the need to making gap preset module 4 again, input data and position data are carried out contrasting and judging, simplify and become bar adjustment process, shorten and become bar regulation time, make adjustment process further more in time with accurate.
Concrete, the mode being exported by pulse between encoder and controller 3 or input realizes connecting.By adopting encoder, and making it be exported by pulse or the mode that inputs realizes being connected with controller 3, the positional precision of roll gap can be made to control to below 0.005mm, for the automatic adjustment of roll gap provides reliable guarantee.In addition, also can be connected by other various communication modes between encoder and controller 3.
In the present embodiment, controller 3 comprises industrial computer and PLC(PLC, the abbreviation of English Programmable Logic Controller, programmable logic controller (PLC), a kind of electronic system of digital operation, it adopts a class programmable memory, for its internally stored program, and actuating logic computing, sequential control, regularly, the user oriented instructions such as counting and arithmetical operation, and pass through numeral or analog pattern input or export to control various types of machinery or production process) control assembly.In the present embodiment, with the PLC of industrial computer and Siemens S7-400 as main control unit, it has more function and larger extensibility, and the milling train many-side that can meet the present embodiment preferably provides adjusts the job requirement simultaneously carried out.
Further, all by the abbreviation of EPA and PROFIBUS(English Process Field Bus between roll 1 drive unit of controller 3 and milling train, between gap preset module 4 and rotational speed control module 5, it is a kind of field bus technique for the monitoring of factory automation workshop level and scene equipment level data communication and control.Digital control and the scene communication network of distributing that scene equipment level monitors to workshop level can be realized, thus for realizing factory integrated automation and field apparatus intellectuality provides feasible solution) be connected and realize communication.In the present embodiment, adopt the PLC of industrial computer and Siemens S7-400 as main control unit, the drive system of milling train adopts the transducer drive with closed-loop vector, communication adopts EPA and PROFIBUS to connect and making this milling train be provided with real-time data communication and the ability of control, providing guarantee for automatically realizing automatically controlling to become bar.
In the present embodiment, operating personnel only need select the specification of current production in the man-machine interface of controller 3, control system will adjust the size of roll gap automatically, milling train is when complete machine runs, controller 3 controls the rotary speed of each roll 1 automatically, and the present embodiment also comprises the carrying out flaw detection device and meter counter (not shown in FIG.) that are electrically connected with controller 3.When the copper bar of rolling passes through the detecting unit of carrying out flaw detection device, carrying out flaw detection device can detect copper bar defect automatically, and adopts meter counter automatic Calibration defective locations, then is kept in industrial computer by related data, generates product quality and production capacity form.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a milling train, is characterized in that, comprising:
By detecting the relative position of different roll (1) to determine the position detecting device (2) of roll gap size;
The controller (3) of the position signalling that described checkout gear (2) sends can be received, described controller (3) has gap preset module (4), and described gap preset module (4) can change according to the relative position of the different described roll (1) of described position signalling control.
2. milling train according to claim 1, is characterized in that, described controller (3) also comprises rotational speed control module (5), and described rotational speed control module (5) can control the rotating speed of described roll (1) in real time according to the size of roll gap.
3. milling train according to claim 1, it is characterized in that, described position detecting device (2) is encoder, and the change in location of described roll (1) is driven by screw mandrel (6), and described encoder realizes the detection to roll gap size by the displacement detecting described screw mandrel (6).
4. milling train according to claim 3, it is characterized in that, described encoder be arranged on drive described screw mandrel movement adjustment motor (7) on, realize detection to described screw mandrel (6) displacement by the rotating cycle detecting the output shaft of described adjustment motor (7).
5. milling train according to claim 3, is characterized in that, the mode being exported by pulse between described encoder and described controller (3) or input realizes connecting.
6. milling train according to claim 3, is characterized in that, described encoder is absolute value encoder.
7. milling train according to claim 1, is characterized in that, described controller (3) comprises industrial computer and PLC control assembly.
8. milling train according to claim 1, it is characterized in that, to be all connected with PROFIBUS by EPA between described controller (3) and the roller drive set of described milling train, between described gap preset module (4) and described rotational speed control module (5) and to realize communication.
9. according to the milling train in claim 1-8 described in any one, it is characterized in that, also comprise the carrying out flaw detection device and meter counter that are electrically connected with described controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632079.5A CN104668292A (en) | 2013-11-29 | 2013-11-29 | Rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632079.5A CN104668292A (en) | 2013-11-29 | 2013-11-29 | Rolling mill |
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| Publication Number | Publication Date |
|---|---|
| CN104668292A true CN104668292A (en) | 2015-06-03 |
Family
ID=53304174
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632079.5A Pending CN104668292A (en) | 2013-11-29 | 2013-11-29 | Rolling mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668293A (en) * | 2013-11-29 | 2015-06-03 | 合肥神马科技集团有限公司 | Rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442245A (en) * | 2003-04-17 | 2003-09-17 | 攀枝花新钢钒股份有限公司热轧板厂 | Leveling method for hydraulic pressing of patterned roller |
| CN101051216A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | AGC and LPC comprehensive control system mould establishing method based on incremental method |
| CN101332471A (en) * | 2008-07-31 | 2008-12-31 | 南京钢铁股份有限公司 | Dynamic control method of biting speed of rolling mill |
| JP2011016164A (en) * | 2009-07-10 | 2011-01-27 | Hitachi Ltd | Rolling equipment and controlling method therefor |
| CN104668293A (en) * | 2013-11-29 | 2015-06-03 | 合肥神马科技集团有限公司 | Rolling mill |
-
2013
- 2013-11-29 CN CN201310632079.5A patent/CN104668292A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442245A (en) * | 2003-04-17 | 2003-09-17 | 攀枝花新钢钒股份有限公司热轧板厂 | Leveling method for hydraulic pressing of patterned roller |
| CN101051216A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | AGC and LPC comprehensive control system mould establishing method based on incremental method |
| CN101332471A (en) * | 2008-07-31 | 2008-12-31 | 南京钢铁股份有限公司 | Dynamic control method of biting speed of rolling mill |
| JP2011016164A (en) * | 2009-07-10 | 2011-01-27 | Hitachi Ltd | Rolling equipment and controlling method therefor |
| CN104668293A (en) * | 2013-11-29 | 2015-06-03 | 合肥神马科技集团有限公司 | Rolling mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668293A (en) * | 2013-11-29 | 2015-06-03 | 合肥神马科技集团有限公司 | Rolling mill |
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Application publication date: 20150603 |
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