SE353059B

Untitled record

Abstract

This record has no abstract on file.

SE353059B, drawing sheet 1 — Sheet 1 of 2

Term

No projected expiry on record.

5 claims: 4 independent, 1 dependent

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PATENT REQUIREMENT r PATENTKRAV r 1. Anordning för styrning av banänden på en påhaspel exempelvis vid valsverk, pappersmaskiner o.dyl., kännetecknad därav, att banans (3) hastig- i het (v) och påhaspelns (1) rotationshastighet (ur) är anordnade att avkännas i f{ mätdon (5 resp. 6), samt att dessa mätdons (5, 6) utsignaler är tillsammans med en signal svarande mot banans längd (s) mellan verkets sista drivande enhet (4) och påhaspelns (1) samt en signal svarande mot en viss lämpligen ( , c inställbar retardation (&>·) för påhaspeln (1) är anordnade att direkt eller j indirekt påföras ett omställningsdon (11), vilket är anordnat att i den tid- | punkt en retardation av banan (3) skall insättas för att påhaspelns (1) ro- · tationshastighet (ur) blir den önskade, såsom noll, när banänden, såsom band- ? 1st Device for controlling the web end of a pile reel, for example at rolling mills, paper machines and the like, characterized in that the speed (v) of the web (3) and the rotational speed (clock) of the pile (1) are arranged to be sensed in f{measuring devices (5 and 5, respectively) 6), and that the output signals of these measuring devices (5, 6) together with a signal corresponding to the length (s) of the web between the last driving unit (4) of the work and the reel (1) and a signal corresponding to a certain suitable (, c adjustable) a deceleration (&> ·) for the reel (1) is arranged to directly or indirectly apply a switching device (11), which is arranged to insert a deceleration of the web (3) at that time for the reel (1) rotation speed (clock) becomes the desired, such as zero, when the web end, such as tape? eller trådänden, träffar påhaspeln (1), avge en retardationssignal till på- | haspelns (1) drivmotor (2), varvid tidpunkten för retardationssignalens av- ) givande är bestämd av de till omställningsdonet (11) påförda signalerna. ί or the wire end, hits the reel (1), emits a deceleration signal to the | the drive motor (2) of the reel (1), the timing of the output of the deceleration signal being determined by the signals applied to the switch (11). ί
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3) drivande enhet (4) innan nämnda retardationssignal genereras. 3) driving unit (4) before generating said deceleration signal. i in 5. Anordning enligt patentkrav 1, kännetecknad, därav, att rotationshastighetssignalen (ii/) påföres en förstärkarenhet (8) med en återkopplingsfaktor/3 ( » 2(1/), varvid förstärkarenhetens (8) utsignal («r/2 <%r) tillsammans med banhastighetssignalen (v) påföres ett multiplicerande don (9), vars utsignal utgöres av en signal (v · «//2 · åfi) direkt proportionell mot hanhastigheten (v) och rotationshastigheten (it/) samt omvänt proportionell mot retardationen (<t/). 5th Device according to claim 1, characterized in that the rotational speed signal (ii /) is applied to an amplifier unit (8) with a feedback factor / 3 (»2 (1 /)), the output of the amplifier unit (8) together (« r / 2 <% r) with the web speed signal (v), a multiplying device (9) is applied, the output of which is a signal (v · «// 2 · eight) directly proportional to the male speed (v) and the rotational speed (it /) and inversely proportional to the deceleration (<t /).
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Anordning enligt patentkrav 2 och 3, kännetecknad därav, att utsignalerna (v · t^ resp. v · «r/2 •άε') från de integrerande resp. multiplicerande donen (8 resp. 9) tillsammanq med hanlängdssignalen (s) påföres ett summeringsdon (10), varvid en impuls utgår till nämnda omställningsdon (11) då summarings donets ,(1O) utsignal (v · t^ + v · W/2 ‘CV- s) byter tecken. 4th Device according to claims 2 and 3, characterized in that the output signals (v · t ^ and v · «r / 2 • άε ') of the integrating and / or respectively. the multiplying means (8 and 9) together with the male length signal (s) is applied to a summing means (10), an impulse being output to said switching means (11) when the output of the summing means, (10) + (v · t ^ + v · W / 2) CVs change characters.
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Anordning enligt något eller några av föregående patentkrav, kännetecknad därav, att omställningsdonet (11) utgöres av en bistabil vippa som triggas då utsignalen (v * t^ + v · U02 · ur - s) från summeringsdonet (1O) byter tecken. 5th Device according to one or more of the preceding claims, characterized in that the switching device (11) is a bistable flip-flop triggered when the output signal (v * t ^ + v · U02 · ur - s) from the summing device (10) changes sign.

Independent claims4

35 paragraphs in 5 sections, as filed

SWEDEN

PATENTS AND REGISTRATION OFFICE

PUBLISHING WRITING No. 353 059 intci b 65 h 25/00

Patent Application. No. 74θ3 / 71 * * * 5 * * * * 10 * * * * 15

Validity Day on

Ans. widely available on

Ans. posted and the pamphlet published the Priority not requested

Received on 8 VI 1971

VI 1971

XII 1972

In 1973

ALIMINE SWEDISH ELECTRICAL AB, VÄSTERÅS Inventor P Cain and R Lockley, Västerås Representative: B Öhman

Device for controlling the male end on a spool

The present invention relates to a device for controlling the male end of a pile reel, for example at rolling mills, paper machines and the like.

When reeling a web, such as a belt or wire being rolled, a paper web, a plastic web, etc., at the instant the tape end, the reel hits the drive speed of the drive motor or motors to the reel has been decelerated to zero speed. You do not want to start or end this deceleration too late, as this results in some loss of production.

The present invention is based on a solution of these and other related problems in, for example, rolls on rolling mills, paper machines or the like.

The invention is thus characterized by what appears from the appended claims.

Hereby, at a certain desired deceleration that can be set for a post winder, a deceleration signal can be obtained at an optimal moment for the drive motor of the post winder to be decelerated to a desired degree, ie. the reel3 rotational speed equal to zero or other desired value when the web end is in the desired position on the reel.

The device according to the invention is more specifically exemplified in the attached figure 1, while figure 2 shows a speed-time diagram in deceleration.

In Figure 1, a spool 1 is shown with. drive motor 2 at a wire or tooth rolling mill. The rolling takes place in the direction of the arrow and the web 3 is driven by a driving whale or by a rolling pair 4 ·

The web speed v is measured in a tachometer generator 5 · Also the speed of rotation of the reel 1 u) is measured by a tachometer generator 6.

The path velocity signal v v is applied to an integral means 7, where the integration time t ut is the time elapsed between the path end leaving the pair of rollers 4 until a deceleration signal is generated to the reel 1, which is also illustrated in Figure 2. This length s with v ^ · t ^.

The increase Sg of the path length s during the deceleration phase requires a theoretical consideration. We are then in the part of the diagram in Figure 2 where t 2 ^ t ^.

In general, v = v ^ - at ^ where a is the deceleration. at2

This gives Sg = v ^ · t ^ -_1_.

Then v = 0 is obtained v. = -A · thrs, i.e. t „= · -.

1 la

This last expression is inserted into the expression of Sg. Then it is obtainedS2 = V1

2 a · v. v „__1 1

But vj = ϋΤ · which gives a = dr · where d is the band diameter and uT is the deceleration desired for the reel. Then 2 is obtained

2l_ s2 = t £ f · d *

However, when v ^ = £ λΓ · the expression of Sg can be rewritten according to Sg = vj · where input parameters are only the device measured (v ^, V?) And constant or set (tt / *).

To generate the above signal, the rotational speed signal h Γ is applied to an amplifier unit 8 with the feedback factor / 3 = 2 ttZ, i.e. proportional to the desired deceleration. The output of amplifier 8 together with the path speed signal v ^ is applied to a multiplying means 9, the output of which is the desired signal v ^ · 7 ^, f ΙΛΖ *

Len total path length s »s. + SO is then of, · t, + v. · · χ — τ-. One

I <- I Ί I 2 (tf signal corresponding to this path length s is obtained from a reference device. These, three signals s, vt and v, · τ ^ ζ - are applied to a summing device 10 whose output signal v ^ t ^ + Vj · - s constitutes an input signal for an adjusting device included in the device, which here constitutes a bi-stable flip-flop 11, When the equation v ^ t ^ + v ^ · £ -rr · - 0 “0 is satisfied, the flip-flop 11 turns and a deceleration signal is output to the impeller motor 2 via a relay 12 (mechanical or electronic).

In the case shown, the deceleration (zZ is constant or adjustable, but of course it can also be made variable, for example after a capacitor discharge curve etc., and in this case it is convenient that the output from the summing device after character use is allowed to continuously control the field or anchor current to the drive motor during the deceleration process, for example via thyristors or transducers, or also incrementally via pulse counting.

The device according to the above can be varied in many ways within the scope of the following claims.

J

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