SU1680406A1 - A method of controlling a mill with perforation and cutting of bent profiles on the go and device therefor - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to equipment for the processing of metals by pressure, and can be used in the production of curved profiles on profile bending mills with perforations and cutting them on the go. The purpose of the proposal is to expand the functionality by making curved profiles as finished products from prefabricated machines and structures. The initial strip before forming the curved profile is passed m: -pe re / cov; - perforator, so that l; -; nor rezl not d.E.es ;.- relatively pzrfsr;: cisnnyh with - ь, each; The cycle of the oypogram is measured by the single LusroB roller perforator, and for m SHY; OB before the end of the sch, l measure the seized cs; / nfr dpina with the contact measuring rollers, 1; the measurement is completed moment okok en lreza. The measured length is compared with the length corresponding to m Lj.sraM roller perforator. The resulting spread is used to construct a given cf..o E. the next cut cycle. Us rsysp e for recl .-; the method of containing technological lmng. with nonocw displacement transducer and a roll forte rhythm pitch. ensuring perforation, perforation, cutting, and ck ;; Cutting the profile to the measured lengths is carried out with the help of the speed setting blocks, scissors, working out the length mismatch, moving the pros, re-pegging the knives, setting the length mismatch, controlling the cycle and correcting for-1y. 2 sec. f -. s, 1 ill.

Description

The invention relates to the processing of wafers with pressure, in particular, to the production of curved profiles on bending mills with perforation and cutting of perforated curved profiles on the go.

Purpose invented by:; - improving the accuracy of dimensional cutting bent profiles.

From the drawing p .;)) functional diagram of the device for implementing the method.

Ryomagyi-atel 1 provides unwinding - A roll of xxxd strips; -. 2. and delivers it to the drive. 3 with er; co-machine

h, lo-go nroizvod.1 t jointing and welding the end of the strip of the previous and subsequent rolls to ensure the infinity of the process. During the docking operations, the unceasing operation of the station ... is ensured by the initial strip 2 stored in the accumulator 3. From the accumulator 3 the initial strip 2 comes in aalo & puncher 5, it ;; b bears poo; .- sony. The other 7 are matrices. The perforator 5 is supplied with a sensor 8 and a roller perforator, which generates signals when the roll punches 6 pass by it.

The perforated strip 9 is transported through the contact measuring rollers 10 with the sensor 11 for moving the profile into the forming mill 12 with the control unit 13. At the exit of the mill 12 a curved perforated profile 14 is formed, which is cut along the fly with the flying scissors 15 with the control block 16. The cut-off lengths of the 17-curved profile 14 are transported by the outgoing roller 18 to the stacker 19 packs. Profile 14 is cut to length 17 by means of a speed setting unit 20 for flying shears 15, a length error matching unit 21, a profile movement block 22, a knife displacement unit 23, a length error setting unit 24, a cycle control unit 25, a block 26 length correction.

8, the control unit 13 of the molding machine 12 includes a serially connected speed setting unit 27, a power converter 28 v. drive unit. 29.

The control unit 15 of the flying scissors 15 includes a series-connected power converter 30 and an actuator 31, as well as a knife displacement sensor 32 connected to the power converter 30 according to a feedback scheme via a frequency-analog converter 33, a cut sensor 34.

The 20 jag and speed unit includes serially connected Kodanzlova converter 39, parabolic converter 40. Adder 41 with a single-pole output, to the second input of which a sensor is connected through serially connected frequency-analog converter 41 and a converter cable 43 11 moves profile 14,

The unit 21 for testing the length mismatch includes serially connected adders 44-46. The output of the latter is connected to the input of the code of the 20th encoder of the block 20.

The displacement unit 22 includes profiling, serially connected, unit 47, of the linear distance between the rolls of the roll 6, roll-on: perforator 5, accumulating adder 48, the output of which is connected to the input of a 4h block 21, as well as series-connected relay link 49 the input is connected to the output of the adder 41 of block 20, a link 50, the second input of which, together with the second input of the accumulating adder 48, is attached to the sensor 34 of the re 16. block 51, of which mm, 0

five

0

five

connected to the second input of the adder 45 of the block 21. The second input of the counter 51 is connected to the sensor 11 moving the profile. In addition, the block 22 includes a link 52 And, through which the third input accumulating adder 48 is connected to the sensor 8 steps of the valer punch 5. The second input of the link 52 / is connected to the output of the relay link 49.

The block 23 of moving knives includes a serially connected frequency divider 53, the input of which is connected to the sensor 32 of moving the knives of block 16, and a counter 54, a second input that is connected to the sensor 34 of the cut of block 16, and the output to the second input of block adder 46 21. To the second input of the frequency divider 53 is connected the output of the overtaking propeller 55, which is also connected to the code input of the code-nsignic converter. 43 block 20,

8 the composition of the length mismatch setting unit 24 is entered in series with the unit 56 measuring length 1.m profile 14, adder 57, counter 58, the second input of which is connected to the sensor 32 for moving the knives of the block 16 via frequency divider 53 of the unit 23, register 59, second input which is connected to the sensor 34 of the cut unit 15, to which the temporary element 60 is also connected. The output of the register 59 is connected to the second input of the adder 44 of the block 21, the output of the temporary element 60 is connected to the third input of the counter 58.

The cycle control unit 25 is comprised of successively connected unit 61 of the number of punches of the roll 6 of the roller perforator 5, encountered with the strip 9 within the measuring length m of the profile 14, the counter 62, the second input of which is connected to the sensor 8 of the steps of the roller perforator 5 and the link 63 matches, the output of which is connected to the third input of the counter 62.

The length correction block BLS 26 includes serially connected setpoint 54 of the monitored section of the measured length. m profile 14, coincidence link 65, the second input of which is connected to the output of counter 62 of block 25, trigger 66, the second input of which is connected to the output of temporary element 60 of block 24, link 67 And, the second input of which is connected to profile moving sensor 11, counter 68 , the second -, the exit to the exit of the link 65 matches through the one-shot u9, the chatter and and the input -. to the output olemechta 60 block 24, the register 70. The fourth turn of the counter 68 is attached to the setter. mechanically connected with the setting device 64. The second input of the register 70 is connected to, - the cutter 34 of the block 16, the third input to the trailing output (the sign OUTPUT) of the counter 66,

the first output - to the input of the adder 57 block 24, the second, sign output - to the second significant input of the adder 57.

The essence of the method is as follows.

Before forming the curved profile, the initial strip is passed through a synchronously rotating roller perforator, which overlaps the strip with a high performance of perforations.

In order to avoid a gradual displacement of the cutting line relative to the perforations in each cycle of cutting the measured length, the deviation of the actually cut profile length from the target length is measured and, if there is a deviation, the correction of the target length measurement in the next cut cycle,

In order to increase the accuracy of cutting the measured length and ensure a given position of the cutting line relative to the perforations, each cycle of the cut is measured with the same number of steps of the roller perforator, for these steps (1,2,3 ...) before the end of the cycle, the remaining part is measured by measuring the length contact measuring ropi-. The measurement is completed at the time of the end of the cut, and the measured length is compared with the length corresponding to the t steps of the roll perforator. Then, the resulting difference is used to correct a given length in the next cut cycle.

The device works as follows.

Before starting the long-term operation of the device, the profile 14 is fed by the forming mill 12 to the flying shears 15 and is set so that the cutting line on the profile 14 coincides with the cutting axis of the scissors 15. At the same time, the sensitive element of the sensor 8 steps of the punches of the roll 6 is set relative to the punches nearest to it so that as a cutting line on the profile 14 is placed relative to the perforations or groups of holes formed by the punches on the strip 9 nearest to it. Then, with the stand forming mill 12, the drive 31 and volatiles are turned on The cutters 15 cut off the first measuring length 17 of the profile 14. When the drive 31 is operating, feedback on its speed is fed to the input of the power converter 30 from the pulse sensor 32 via the frequency-analog converter 33. At the time the knives 15 descend, when cutting the cut 34, a pulse signal is emitted .

According to a signal from the sensor 34, the cut-out-54 of the knife-moving unit 23 cuts off, then in the process of slowing down the latter, the counter 5-. counting the pulses of the sensor 32, measures the movement of the blades relative to their position at the time of the cut.

After finishing the cycle of the first cut with

5, using the speed setting unit 27 and the power converter 28, the drive 29 of the control unit 13 and the molding machine 12 to the operating speed are turned on. Thanks to the hard link through lane 9 at the same time

10 start measuring rollers

10 with a pulse sensor 11 moving the profile and the vagi 6 and 7 of the earthear perforator 5, the bent profile 14 moves the forming mills 12 to the flying scissors

5 15. The previous measuring length 17 of the rolling rolyou 18 is transmitted to the stacker 19 packages.

Poi moving; nuta profile 14 and the rotation of the rolls 6 and measuring rollers

0 10 transducers 8 steps of punches and 11 movements of the profile pulses arrive in blocks 20,22,25 and 26. In block 20, sensor pulses

11 are converted by chase-analogue transducer 42 and code-valued pre5 to form knife overtaking 43 into a speed setting signal / g of adder 41 with a unipolar output, however adder 41 doesn’t pass through its output and input of control unit 16 of flying scissors 15, Vs does not pass, so varnish the second input of the adder 41 is fed with the opposite sign of the output signal d I block 21 mismatch. length, which is a analog converter 39 and a parabolic converter

5 to 40 is converted to an AV signal to reduce the speed of the knives 15. In this case, D V / C.

The signal 61 of the block 21 is formed by applying to the input of its adder 44 an output signal of the block 24 of the mismatch task

0 length A LM. To the second input of the adder 44, as well as to the second input in series with it the included adder 45, output signals of block 22 are received with opposite sign, proportional to the current

5 to the displacement f of profile 14. The last at the time of the knives converging 15 is extinguished by the sensor 34 of the cutting unit of the control 16.

As the profile 14 progresses and the rolls 6 and 7 rotate accordingly.

0 roller punch 5 according to the signals of the sensor 8 step punch roll 6 increases the output signal accumulating adder 48 in block 22. When each punch of the roll 6 by the sensor 8

5, the latter generates a signal through link 52 and to the control input of accumulating adder 48. Link 52 and passes these signals, since the relay link 49, which controls - the presence of the output signal of block 20, has

signal at its inverse output. Since the code input of accumulating adder 48 is fed by a cm of 47, the corresponding linear distance between adjacent punches azhg bout that with each sensor signal 8 the output CHI code of the adder 48 is increased by this distance. Accordingly, output signal the sum of iOpa 44 and block 21 obsbot / and oessog lasovany so the last solve equation (1) t-iodine its RCCH and the error of working with the sggesovamm d to zero

d -AU - ({- K1o6 U- 0, (11

where Lee, is the length specified by block 24,

I current will retrain Rroil 1 measured by block 22,

O b b is the current offset-N0-C, taking into account the overtaking measured by the block 23

The coefficient of overtaking of 15 profile 14 in the cut zone for the stand, the moving pofsh q of the SSEP, is located behind the sensor Ь5 in LSKR 23}

In the cutting zone patcor MBSH, / dpin. with f both g pae t h glnosn) and w-ee-eye P1

h-;}

When the output / sig hl blosk 2 -i / s ka irabo th. disagreement1 - lengths (5 i ин ин сл насто насто насто о с с с с од и од од од 4 4 4 i Д Д 4 i J, / 20 according to Wits-tal.,. G CHECHINES of the station with flying scissors 13 ps1 with the link 49 hours 22 sotv 3BenJi-i I i is blocked by the id, i.e. in the c o v v, c iooa 48 cm NALOBE sensor 8 and counting off

AU - 1m K 10 & LH - "3

(2)

where LM is the preset point of 56 "iepi length 17 profile 14,

LJ - knife path 51 perimeter

Kob coefficient obyun knife and: 5 profl 14 when dt opeps - CEP t hm for Nohei or dvAushskshch t (Ks adzetts back ttsikoi 5 b current ° 3)

6U - shzch ere ork j ceo, i.e. with the sign of the size of an ae-11 measuring length 17 at the top

The If code, through the adder 57, vodu., 1 error dL; v, with ss; Ssch Z -n op-scares on lsds JUH input with et1 Esbor; Shda U ± b, C 58 para / sch its L fv.oi STE eeaudp jf. epjc "of length 7 according to impulse i 41- / gh i (sensor cmf 6 cc oewoi r eiie 6G C /

i e 24 Preliminary on the signal of sensor 3, the sieber of the siege 58 rewrites the p register 59 and serves as the task L U (2) for the Slal 21 About the length error mismatch. The K 06LH value is subtracted from the Uv x dU value in the counter 58 due to the feed in the loop cut off /. length 17 with SPT - the input of the counter 58 of the pulses of the sensor 32 of the movement of the knives 15 through the receiver 53 of the block 23

The error of ± d LM of cut-off measured 1 m is determined using blocks of 5 ticta control, h 6 length correction

Gno1-25 cycle control with the help of sensor 8 steps of the rolls' banson continuously b. The loop without error is polished on the L, and the profile twelve is 14 np scored / correct L LENGTH. This is achieved by nyye.v 0 into the counter 62 block E 25 station assignment 61 / (and the shaft “.a 6 rotate U / IVCP with voice and 2 in measure Lf At the moment of zeroing of the counter 62 4io, fix 1 2 cm 63 coincidence on with a transducer r et0 imp / lso of the sensor 11 with the parameters G 2 dag. eiyishz working out a length of b (1) in the block 21 of the p YUCHR „tcr sensor 8 shagz punches by 4 "to 11 pyremai hh C g | rofig, Moment O 1o lyuche I and accordingly the level C 1gun at the output of block 20 at which the relay link 49 is adjusted by selecting the zone of the last sensation

1 Switch from pulse sensor 11

B aka 72 moves the profile and corresponds to tah iO bpock 21 debugging and v lengths of production to ensure that when you release 15 to synchronous with pro- cum 14 speed would correspond to each L, oyry code signals of the current displacement profile I and knives KO 1n, since the latter are formed by means of a pulse sensor 32 in block 16 and respectively 5 e "detector 54 in block 23 and are fed to block 21. in- (od adder 45 Only by sensor 11 13l-zr fi moving profip 14dann SL) CR is correct because it is impossible; i / ji i / iTo scoop contact me t Jh s Jwb x of rollers 10 relative to the band 9 '} reestablish the LINU cut from its location on the if profile xc-pchhsm vMacikf true, pro 0. It is acceptable because the probability of psg alz1 ujSr-ii-meg) roller clips 10 ozs i sp is reduced though, jo .. bc cr ogno, is excluded

3, - domain Toeschenp mm cha w 1G 1st length 7 prcfr 14

the sensor 34 of the block 16 accumulates the adder 48 and the counter 51 in block 22, the output signal of the adder 41 disappears in block 20, restores the initial state of the relay link 49 in block 22, and the length of error matching cycle A LM is repeated in the order described.

An ALM length mismatch is formed in block 24 in accordance with / zeroing, the latter generates an input signal to the counter 62 of the P number. Then a new cycle of writing off this number and monitoring the progress of profile 14 to the next length LM begins.

Before the zeroing of the totalizer, the count 62 in block 25 triggers a link 65 coincidence in block 26 (the value of the remainder n in counter 62, gpc, in which the link 65 operates, is set by setting unit 64 in block 26). The remainder of the number p, -tc corresponds to the final section AL.K of the measured length Lw, at which the error in cutting the profile 14 is determined, and which is specified by the sensor 71 and the unit 64 mechanically connected with it.

When the link 65 is triggered, the trigger 66 is turned on, and by the signal of the one-shot 69 that converts the continuous input signal into the pulse output, the code Db is entered into the counter 68 from the setpoint 71,

When the trigger 66 is turned on, the link 67 also transmits to the subtracting counting input of the counter 68 pulses of the sensor 14 of the movement 14 of the profile 14, which write off the ALK code.

If at the time of the cut the code D U is written off completely, then the error of the cut is absent, L LM 0. If at the time of the cut the code A LK is not written off completely, the cut profile 14 has a length shorter than LM, if H1M 0. the output of the counter 68 will become negative, then the profile 14 has a length greater than LM, 0.

At the time of the end of the cut by the signal of the cut sensor 34 of the block 16, the counter code 68 and its sign are copied to the register 70. The cut error code and its ± BM sign recorded in the register 70 are summed with the sign with the reference code of the measuring length m in the adder 57 block 24 according to equation (2) to compensate for this error in the next cycle of cutting length 17, i.e. to shift the cutting line in the next cycle to the desired location on profile 14.

The PS is cut off, the counter 68 is turned off, and the trigger 66 is turned off, being prepared to determine the cut error in the next qi {s, e.

Thus, in the end sections ЈL; of all dimensional lengths LM, fixed by block 25, produced by sensor 11, the determination of the pcrh error and the shift of the rs 2 line is relative to its location on the profile. Since Al sections are chosen to be sufficiently small and the slippage probability of the following follower rollers 10 is insignificant, the measurement of the shear of the cut can be considered reliable. But even when an inaccuracy is detected at individual dimensional lengths, the error is determined in the C – I cut, the inaccuracy does not accumulate, TdK as a measure of the shift of the cut line in each cycle of the crushing blocks of the 25 7pc.iv blocks, which crashes without errors, and see the progress of each measuring length of profile 14.

Thus, OST, increase of accuracy / 3i .- perforated 1. bent to the profile and ensures the possible use of them for h finished products s prefabricated structures of machines and structures.

F o r NI a l z o b r P t e n i

1. The control method will be with persotation and cutting bends on the move, including forming a bent profile from an infinite strip with subsequent cutting on the run into measured lengths with volatile parts with a given length in each piece of cut, differing from. and so that in order to increase the accuracy of the 1 mergugo cutting of curved profiles, the initial strip is passed through an EZLKO perforator by forming a curved profile, each cycle of cutting the measured length is measured with the same number of steps of the roller perforator, for these steps (m 1.2, 3 ...) before the end of the cycle, the remaining part of the specified measuring length is measured by the contact measuring rollers, the measurement is completed at the time of the end of the cut, and the measured remaining part of the correct length is compared with the length corresponding to m steps of the roll perforator After the resulting deflection is used to "orrektsii predetermined cut length in the next cycle of cutting.

2 Mill control device with perforation and cutting of curved profiles on the go, containing unwinder installed in the technological sequence, strip accumulator with butt-welding machine, measuring rollers with profile displacement sensor, molding mill flying shears with control unit, also length mismatch testing unit, output s connected to the first input of the flying speed shear speed unit, the second input of which is connected to the profile displacement sensor, and the output to the flying scissors control unit, l and h a yu1 j ep c r re they are tsi i -che1 jc

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Mr. Valkov perforator Vspyslenn z zide Tzoy Oalkov one ir from pi n g j en punches and other pi pi C / steps of the roller perforator to spgs, g

f I Nl OLO / PERR CHZSChSCHRR ro z p CHP i Jinpt / LR TSKhKLR (ZZD (ND pd Ol F J

i and length, block speech code nd i -s v Gt0 mervmy knife to the knife / when omked net u iij 1tsnyi 1zhzha firstm / oi

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Claims (2)

Claim 1. A method of controlling a mill with perforation and cutting of bent profiles on the go, comprising forming a bent profile from an endless strip, followed by cutting on the move to measured lengths with flying scissors with working off a given measured length in each cutting cycle, distinguishing with>. τε-m, that, in order to increase the accuracy of the dimensional cutting of bent profiles, before forming a bent profile, the initial strip is passed through a roll puncher, each cutting cycle of a measured length is measured with the same number of steps of a roll puncher, for m of these steps (m = 1,2,3 ...) until the end of the cycle, the remainder of the given measured length is measured. Lengths are measured by contact measuring rollers, the measurement is completed at the end of the cut and the measured remaining part of the measured length is compared with the length corresponding to m steps of the roll punch, last why the resulting deviation is used to correct a given measured length in the next cutting cycle. 2, A control device for a mill with perforation and cutting of bent profiles on the go, containing an uncoiler installed in the technological sequence, a strip accumulator with a butt welding machine, measuring rollers with a profile displacement sensor, a forming mill, flying shears with a control unit, and also a length mismatch processing unit, output connected with the first input of the unit for setting the speed of flying scissors, the second input of which is connected to the transient sensor. profile, and the exit - with a control unit for flying scissors, which is ensured by the fact that it additionally contains a roll puncher installed in front of the molding mill, made in the form of a pair of rolls, odd ^. -ir, which are equipped with punches, and the other - dies , the step sensor of the roll punch and the associated profile displacement unit and the cycle control unit, the length mismatch setting unit, the length correction unit and the knife movement unit, while the knife movement unit with the first and second inputs is connected to the corresponding outputs control unit for flying shears, and outputs: the first with the third input of the unit for setting the speed of flying scissors, the second with the first input of the unit for setting the mismatch of length, the third with the first input of the unit for working out the mismatch of length, the fourth with the first input of the length correction unit. the second input of the length mismatch task unit and the second input of the profile displacement unit 5, the third input associated with the profile displacement sensor and the second input of the length displacement unit, the fourth input - with the output of the volt speed set unit x scissors, and the first ΐϋ and second outputs, respectively, with the second and third inputs of the length mismatch processing unit, the fourth input of which is connected to the first output of the length mismatch task unit, the second output, '• M by the third and fourth inputs connected respectively to the third input, the first and second outputs of the length correction block.