CN202147179U - Device for flying shear location and shearing control - Google Patents
Device for flying shear location and shearing control Download PDFInfo
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- CN202147179U CN202147179U CN201120018065U CN201120018065U CN202147179U CN 202147179 U CN202147179 U CN 202147179U CN 201120018065 U CN201120018065 U CN 201120018065U CN 201120018065 U CN201120018065 U CN 201120018065U CN 202147179 U CN202147179 U CN 202147179U
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Abstract
The utility model discloses a device for flying shear location and shearing control, which is invented for solving problems of high cost and instable signals in the prior art; according to the device disclosed by the utility model, a programmable module self-contained in a transmission device is provided with a speed setting module, a position setting module and a function switching module in a user-defined manner; a proximity switch is arranged on a flying-shear off-cutting angle; the function switching module receives the shearing instruction of an external system and a signal sent by the proximity switch so as to complete switch control between the speed setting module and the position setting module; the operationsof the flying shear location and the precise shearing control are completed in the transmission device; by dint of the method and the structure disclosed by the utility model, control hardware is reduced greatly; the interference degree of external signals is low; the cost is saved; the operation and control is simple; and a demand on operator is low.
Description
Technical field
The utility model relates to excellent wire rod steel rolling field, particularly transmission of start and stop flying shear and automation control area flying shear location and shearing control device.
Background technology
Flying shear is one of visual plant in the excellent wire rod rolling system, and the stability of its work and reliability directly influence the lumber recovery and the production output of product.Start and stop flying shear location and shearing control are flying shear control important steps, realize that at present this control method conclusion has two types: one, through the PLC completion; Two, accomplish (T400 is that Siemens Company is the standard option of its transmission device (like 6RA70,6SE70 etc.) configuration) by board T400.
Accomplish Position control of flying shear through PLC and unavoidably have following problem: with Siemens S300 CUP (6ES7 315-2AG10-0AB0) configuration FM354 axle locating module (6ES7 354-1AH01-0AE0) is example; Other types PLC and other configuration mode operation principles are basic identical, do not set forth one by one:
1) control system complex, many, the poor stability of interference source.Because FM354 output signal can only be positive and negative 10V analog quantity, its signal is as the transmission device velocity setting, if PLC and transmission device be or not a place, the transmission of this signal very easily is interfered; 0V drift simultaneously also affects system stability; FM354 also must accept on-the-spot cutting edge code signal, no matter with which kind of communication modes transmission, if this signal is affected and also directly has influence on the stability of a system.
2) height of controlling cost.Cutting edge position coder, FM354 axle locating module are essential equipment in this system, and it is necessary that corresponding mechanical installation and design, signal transmit anti-interference protective material.
Accomplished location, the shearing of flying shear by board T400 and control, method has two kinds of (1) board T400 not contain standard shearing software at present, and the engineering staff utilizes the S7-CFC programming tool to accomplish the control program of relevant flying shear.
3) T400 contains standard shearing software, and the engineering staff is provided with through outside connection, T400 parameter and accomplishes system building and function realization.No matter adopt (1), (2) method, because unavoidably there is following problem in the characteristics of T400 own:
4) the control system complex, require quality high to engineering staff and attendant.No matter adopt (1), (2) method, because existing, T400 fixed flying shear control system complex peripheral structure: last milling train or preceding pinch roll speed encoder signals collecting, cutting edge position coder signals collecting, cold and hot metal detector signals collecting or the like; Utilize S7-CFC programming development flying shear corresponding function software or all very complicated, require quality high engineering staff and attendant to T400 functional parameter and technological parameter setting.
5) height of controlling cost.Complex control system be unable to do without corresponding hardware and software expenditure: T400 itself, S7-CFC or standard are sheared software, cutting edge position coder, pulse distribution plate or the like.
The utility model content
In order to overcome above-mentioned defective, the purpose of the utility model is to provide a kind of flying shear simple, that interference is low, accuracy is high to locate and shear the device of control.
In order to achieve the above object; The realization flying shear location of the utility model and the device of shearing control; Comprise the flying shear motor, carry the transmission device of programmable block and be arranged on flying shear being connected near switch from the corner cut place with transmission device; Said flying shear motor is provided with encoder, and said transmission device connects the external auxiliary system and accomplishes exchanges data through PROFIBUS-DP and said transmission device, and programmable block comprises:
The velocity setting module, being used for shearing condition is that cutting edge turns to the control from corner cut process flying shear motor speed from initial angle, and cutting edge is consistent going into corner cut to cutting edge horizontal direction component lines speed and bar rolling speed when the corner cut scope is rotated;
The given module in position is used for positioning states and is cutting edge from turn to the control of initial angle process flying shear motor speed from corner cut, and making cutting edge speed when the initial angle position is zero;
The function handover module is used in the shearing instruction of passing through PROFIBUS-DP transmission that receives the external auxiliary system and the function accomplished between the given module of velocity setting module and position during near the signal of switch is switched.
Further, the given module in described position comprises:
Cutting edge position comparing unit, the difference that compares with reference to given position with the setting initial angle to velocity characteristic curved unit output cutting edge position;
The velocity characteristic curved unit; According to gearratio, flying shear motor encoder revolution umber of pulse and the cutting edge of the initial angle of the cutting edge of setting, transmission device in diverse location section velocity setting value and the setting speed indicatrix; After receiving the difference of cutting edge position comparing unit output, obtain the corresponding speed of this difference and this speed is delivered to the negative-feedback control module as the velocity setting value according to this velocity characteristic curve;
The negative-feedback control module receives above-mentioned velocity setting value and controls the flying shear motor speed through transmission device.
The external auxiliary system send to shear instruction to transmission device, and transmission device receives this shearings instruction back and switches to the velocity setting module through process software function handover module and transmission device is carried out speed closed loop control make cutting edge accomplish successively speed to being consistent from horizontal direction component lines speed between the corner cut and bar rolling speed and follow shearing and control going into corner cut; Cutting edge turns to when the corner cut position, sends signal near switch to transmission device, and transmission device receives behind this signal and to switch to the given module in position through process software function handover module and transmission device is controlled to make cutting edge be zero in speed when turning to the initial angle position from corner cut; Dynamically adjust the cutting edge position; Like this, cutting edge is in the initial angle position, and the speed of cutting edge is the zero inactive state that is in; Accomplished the position ring positioning control; Because position ring is in duty all the time, set the initial angle position even cause cutting edge to depart from for a certain reason, also can in time adjust to the right place to it; Above-mentioned method; Only utilize and carry programmable block in the transmission device of flying shear motor and accomplish the accurate location of flying shear, shear control; And the control system is simple, interference source is few, job stability is high, practices thrift and controls cost in a large number; Simultaneously engineering staff and attendant are required to reduce, and have programmable block basically in the transmission device of flying shear at present.
Description of drawings
Fig. 1 is the control block diagram of the specific embodiment of the utility model.
Fig. 2 is that the flying shear of the utility model is sheared sketch map.
Fig. 3 is the range conversion sketch map of cutting edge location register in the specific embodiment of the utility model.
Fig. 4 is position ring control and shear the control sketch map in the specific embodiment of the utility model.
Fig. 5 is exchanges data figure in the specific embodiment of the utility model.
Fig. 6 is electrically connected schematic diagram in the specific embodiment of the utility model.
Fig. 7 is a parameter attribute curve map in the specific embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment to the utility model further explain.
Shown in Fig. 1-7, the utility model only utilizes and carries programmable block in the transmission device of flying shear motor and accomplish the accurate location of flying shear, shear control.Basically have process software or programmable block in the transmission device of flying shear at present.For example: SIEMENS flow directing device 6RA70 has process software S00, and SIEMENS AC drives 6SE70 has free free functional block, and ABB exchanges ACS800 and direct current DCS800 device all has the custom programming function.Because start stop mode flying shear drive motors major part is a direct current generator on the rolling line, and mostly transmission device is: SIEMENSS IMOREG DC-MASTER 6RA70.Be example with SIEMENS 6RA70 actuator drives flying shear direct current generator below, describe this utility model main technical schemes in detail:
As shown in Figure 1, the external auxiliary system belongs to measurement of material speed and material level tracking system in the flying shear control, and it and 6RA70 device are accomplished the relevant data exchange through the PROFIBUS-DP communication modes.Only have process software S00 and build functional block diagram with flow directing device 6RA70.After " external auxiliary system " sent the shearing instruction, transmission device received the back flying shear and converts " shearing state of a control " by " positioning control state " into through " function switching ", and velocity setting is bar rolling speed immediately; Be delivered to " speed regulator " in " 6RA70 basic function figure " or the like; Accomplish speed closed loop through encoder; Cutting edge equates with the rolled piece linear velocity in X axle component lines speed before cutting edge arrives corner cut, guarantees that cutting edge sees that linear velocity equates with rolling going into corner cut and cutting edge linear velocity between corner cut.When cutting edge arrives from corner cut, send pulse signal near switch; This moment, flying shear converted " positioning control state " by " shearing state of a control " into through " function switching "; The zero clearing of cutting edge register value; Can accurately calculate the cutting edge real time position according to gear ratio, encoder pulse number, compare, draw different differences and find out " indicatrix that configures in advance " velocity setting value with the desired location value; Up to cutting edge speed when setting start bit is zero, completing place ring control.The indicatrix that configures in advance is a basis: cutting edge open beginning angle, gear ratio, motor encoder revolution umber of pulse and cutting edge in diverse location section velocity setting value.
For better explanation the utility model operation principle, the course of work, see that at first flying shear shears sketch map, as shown in Figure 2, regulation simultaneously: 1, cutting edge is 1 near switching signal near switch when cutting edge is in from the corner cut position, and other position is 0; 2, the position of rest of flying shear blade is set in 900.Fig. 3, Fig. 4, Fig. 5 draw according to regulation symbol and expression way in the SIEMENS 6RA70 operation instructions.
Fig. 3 accomplishes data range function.Reflection cutting edge location register has high-order K43 and low level K42, for back data uniformity: with the individual character completion, must it be united two into one.When very big or reduction box speed reducing ratio was very big at the every circle pulse number of motor encoder, cutting edge rotated a week, and the K43 intermediate value is non-vanishing.Fig. 1 moves right 2 with its numerical value (binary system) exactly, and reality passes to K9113 with its numerical value (decimal system) after 4, the revolution maximum is controlled in 65535, and data are not overflowed.
Exporting K9113 value (positional value of cutting edge) among Fig. 4 in the mid portion acceptance pattern 1 compares with K402 value (the cutting edge position of rest is set 90 ° of values); Its difference K9122 passes to characteristic curve module 106, constitutes negative-feedback control according to configuring the characteristic curve profile in advance, as scheming through a series of K9213 that are delivered to; With its velocity setting value; Dynamically adjustment cutting edge position is that the K9213 value is zero in dead zone range until K9122, and cutting edge is in 90 ° of positions like this; Cutting edge speed is zero to be in relative static conditions, has accomplished the position ring positioning control.Because position ring is in duty all the time,, also can adjust to the right place even set the position because certain causes cutting edge to depart from good time; When upper part receives shearing instruction B3101 through the DP communication among Fig. 4; Be automatically converted to the flying shear shearing condition in the logic function; Require automatically simultaneously cutting edge going into corner cut with between the corner cut with the shearing of K3002 value, satisfy flying shear blade and bar rolling speed is followed requirement.When cutting edge left from corner cut, the control function changed position ring automatically over to, i.e. the flying shear location; Among Fig. 4 lower part perfect broken section function of flying shear and when maintenance the forward crawl with reverse crawl function.
Explained among Fig. 5 relevant significant data has been passed to other system.
This utility model can be verified through setting up little flying shear model.
Realize that through the laboratory this phase utility model is that example is introduced experimental technique and step with me below:
Main hardware is formed: a tail end band encoder (2048 pulses/revolution) 3KW direct current generator; (speed reducing ratio: 3.57), a cover is with DP address card 6RA7025-6DV62 device to a small-sized reduction box, and one near switch (mechanical installation requirement a: induction of reduction gearbox output shaft installation iron bar; The simulation flying shear blade; Output shaft rotates a week, produces a pulse signal near switch), a cover S7300 PLC (not describing here).As shown in Figure 6, experiment electrical wiring schematic diagram.
Experimental procedure:
1, by last figure wiring.
2, electromechanics catcher is thrown off, debug out flying shear drive of motor characteristic requirements (ramp function will be lacked as far as possible, armature supply will be decontroled etc.).
3, debugging PLC and transmission device communication (passes down here and has only 2 parameters: shear instruction B3101, simulation bar rolling speed K3002.)
4, connect the motor catcher.
5, functional diagram 1, Fig. 2, Fig. 3 parameter are input in the transmission device.
6, power on.Assign shearing instruction B3101=1 (0.5 pulse per second (PPS), rising edge are starting point) through PLC,
Assign bar rolling speed K3002 simultaneously.Then flying shear stops at starting point after accomplishing and once shearing.Provide K3002 different value (scope: 0-16384), can find out that shear rate changes respectively.
Be also can prove absolutely problem below with SIEMENS transmission debugging software DriveMonitor relevant oscillogram of (K3002=819250%) record when testing:
As shown in Figure 7, among the figure the below be 2 switching value states: shear instruction B3101, cutting edge is near switch B16.
Figure medium blue curve 1 is: the motor actual speed; Orange curve 3 is: the armature actual current; Yellow curve 4 is: velocity setting; Green curve 5 is: the cutting edge positional value.
Utilize and carry programmable block in the transmission device of flying shear motor and accomplish the accurate location of flying shear, shear control.
According to 1, the reduction gear box speed reducing ratio, 2, accept cutting edge near switching signal as starting point, 3, the motor encoder value is counted.Calculate the cutting edge actual position value in good time, compare, constitute negative-feedback control, realize the accurate positioning control of cutting edge according to configuring the characteristic curve profile in advance with setting value.Through accepting outside shear signal, accomplish a speed automatically according to the design logic functional diagram and follow shearing control.
Above-mentioned method, the control system is simple, interference source is few, job stability is high.According to last figure, electric hardware device has only in the native system: flying shear motor, motor encoder, 6RA70 transmission device, cutting edge are near switch.With controlled systematic comparison in the past and do not need: equipment such as cutting edge encoder, axle locating module, T400 board, pulse distribution plate, the control system hardware structure is simple; Location, shearing control are the inner completion of 6RA70 transmission device, have reduced many external signal transmission links, and interference source reduces naturally, and job stability is corresponding to be improved.Practice thrift and control cost in a large number.In this phase utility model technology with scheme in the past relatively: increased by 1 and authorized two near switch and S00, the increase expense is about 3,000 yuan; The hardware and software cost that reduces has about 50,000 yuan approximately; It is very clear that the utility model is controlled cost low.Require quality to reduce to engineering staff and attendant.The completion of native system function mainly in the 6RA70 transmission device, relates to peripheral knowledge and reduces a lot relatively.
The utility model is not limited to above-mentioned embodiment, no matter on its shape or structure, do any variation, everyly utilizes above-mentioned all to be a kind of distortion of the utility model, all should to think and drop within the utility model protection domain.
Claims (1)
1. the device of control is located and sheared to a flying shear; Comprise the flying shear motor, carry the transmission device of programmable block and be arranged on flying shear being connected near switch from the corner cut place with transmission device; Said flying shear motor is provided with encoder; Said transmission device connects the external auxiliary system and accomplishes exchanges data through PROFIBUS-DP and said transmission device, and programmable block comprises:
The velocity setting module, being used for shearing condition is that cutting edge turns to the control from corner cut process flying shear motor speed from initial angle, and cutting edge is consistent going into corner cut to cutting edge horizontal direction component lines speed and bar rolling speed when the corner cut scope is rotated;
The given module in position is used for positioning states and is cutting edge from turn to the control of initial angle process flying shear motor speed from corner cut, and making cutting edge speed when the initial angle position is zero;
The function handover module is used in the shearing instruction of passing through PROFIBUS-DP transmission that receives the external auxiliary system and the function accomplished between the given module of velocity setting module and position during near the signal of switch is switched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120018065U CN202147179U (en) | 2011-01-20 | 2011-01-20 | Device for flying shear location and shearing control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120018065U CN202147179U (en) | 2011-01-20 | 2011-01-20 | Device for flying shear location and shearing control |
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| CN202147179U true CN202147179U (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120018065U Expired - Fee Related CN202147179U (en) | 2011-01-20 | 2011-01-20 | Device for flying shear location and shearing control |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023610A (en) * | 2010-10-14 | 2011-04-20 | 中冶华天南京自动化工程有限公司 | Method and device for achieving positioning and shearing control of flying shear by process software |
| CN103111679A (en) * | 2013-03-06 | 2013-05-22 | 济钢集团有限公司 | Method for calculating and solving cutting elbow of flying shear based on off-cutting angle |
| CN103302349A (en) * | 2013-06-20 | 2013-09-18 | 广州机械科学研究院有限公司 | Flying shear control system and flying shear control method |
| CN103838175A (en) * | 2013-12-25 | 2014-06-04 | 上海金自天正信息技术有限公司 | Alternating-current flying shear control system |
| CN106919054A (en) * | 2017-04-13 | 2017-07-04 | 中冶华天工程技术有限公司 | Flying Shear of Rod Material Shearing Optimization control system and method based on machine vision |
-
2011
- 2011-01-20 CN CN201120018065U patent/CN202147179U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023610A (en) * | 2010-10-14 | 2011-04-20 | 中冶华天南京自动化工程有限公司 | Method and device for achieving positioning and shearing control of flying shear by process software |
| CN103111679A (en) * | 2013-03-06 | 2013-05-22 | 济钢集团有限公司 | Method for calculating and solving cutting elbow of flying shear based on off-cutting angle |
| CN103302349A (en) * | 2013-06-20 | 2013-09-18 | 广州机械科学研究院有限公司 | Flying shear control system and flying shear control method |
| CN103302349B (en) * | 2013-06-20 | 2015-08-19 | 广州机械科学研究院有限公司 | A kind of flying shear control system and control method thereof |
| CN103838175A (en) * | 2013-12-25 | 2014-06-04 | 上海金自天正信息技术有限公司 | Alternating-current flying shear control system |
| CN103838175B (en) * | 2013-12-25 | 2016-08-17 | 上海金自天正信息技术有限公司 | Exchange flying shear control system |
| CN106919054A (en) * | 2017-04-13 | 2017-07-04 | 中冶华天工程技术有限公司 | Flying Shear of Rod Material Shearing Optimization control system and method based on machine vision |
| CN106919054B (en) * | 2017-04-13 | 2023-07-21 | 中冶华天工程技术有限公司 | Bar flying shear shearing optimization control system and method based on machine vision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUATIAN ENGINEERING + TECHNOLOGY CORPORATION, MCC Free format text: FORMER NAME: MCC HUATIAN NANJING AUTOMATION ENGINEERING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Jianye District of Nanjing City, Jiangsu province 210019 the Fuchun River Street No. 18 Patentee after: Nanjing, sky electrical engineering Technology Co., Ltd. of middle smelting China Address before: 210009 No. 69 Olympic Sports street, Jianye District, Jiangsu, Nanjing Patentee before: MCC Huatian Nanjing Automation Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20150120 |
|
| EXPY | Termination of patent right or utility model |