DE6609342U - FLYING SCISSORS. - Google Patents

Description

PATENT LAWYERS F .W. HEMMER I · GERDMO LL ER · D. G ROSSE ζΓ

Ref .: S 48 2.43 / 49 c Gm

Jan. 22, 1372 g.we 30 643

ELiAG Siegener laaschinenbau Gnbll, 5912 Hilchenbach-Dahlbruch

/ Flying scissors

The innovation relates to flying scissors with a swing arm periodically pivoted by eccentrics, which is equipped with cranks or eccentrics driven in opposite directions by means of continuous cranks or eccentrics, the upper one being held by a Llesser bar arranged on a Ji swing arm, while the lower one longitudinally displaceable guided in the rocker is supported on the uxsenter assigned to it via connecting rods. Such flying scissors have proven themselves for dividing moving silk goods such as strips or tracks made of lethal or other materials in motion. The task of separating identical, i * ^{1 of} their length predetermined sections from the material to be cut, whereby at least while the cut is being carried out in the current material to be cut, the knives arranged in the rocker are advanced in the direction of movement of the material to be cut at the same speed as the cuttable precedes, is dissolved in such flying shears characterized in that both the feed rate of the Sciineidgutes are variable and the average frequency of the scissors Nesser in certain depen ^ i _o ness of each other. Thus, for example, the variable feed speed can be brought about by an appropriately adjustable reduction gear, which is usually designed as a continuously variable 3-bevel gear and is arranged in such a way that its output speed is via a differential gear

PATENTANWÄLTE FW H EMM 6 R ICH GERDMOLL ER D. G ROSSE _ , _ _{I # 1}

-2-

the speed of the ei £ Ciitlic: .en ^ the internal drive gear of the Funding facility is uborls ert, and the for the operation of the ScLv.'in ^ sci.jre required exact conveying speed a ^ ielien lets- The .change of the In conventional arrangements, the cutting frequency is determined by a number of selectable scalable reduction ratios in the drive back gear of the rocker achieved by setting the feed speed accordingly and cutting frequency can be done with the scissors within a given length interval, selectable lengths of the material to be cut, also called basic lengths, separated will. If section lengths above the adjustable basic lengths are specified, then within of the interval a basic length is set, its whole number Multiple of the section length to be preselected corresponds, and by means of a special reduction gear assigned to the drive of the undertaker becomes a periodic one, corresponding to the factor of the basic length one or more times suspension of the cutting process after each cut causes and thereby the Set basic length doubled or correspondingly multiplied. So are known scissors in the main drive back gear On the drive shafts for the lower and upper knife several saddles that can be switched on and off provided, the number of teeth are matched so that a merging of the upper and lower blade depending on Adjustment with every oscillation of the rocker or else also every second, third, fourth, fifth or sixth oscillation takes place (IiS-PS 2 734 570). In addition: in most known scissors, the upper Limit of Absciinittslünje limited because the kinematics the scissors do not swisclien a large number of incorrect cuts Work cuts "

PATENT LAWYERS F.W. H EM M ER ICH - G E R D M O LLER - D. G ROSSE - 3 -

Ss are not known to be scissors where the uirkssna length or amoli that of the one of the connecting rods assigned to the! .esserbalken by means of assigned, preferably hydraulically effective servomotors can be changed, which is the effective length of the Determine connecting rod controllably. Even the DF-PS 905 814 will uses a fundamentally differently structured pair of scissors, those made up of two un parallel ones, each bearing a llesser Axes oscillating swing exists whose center distance is changeable by means of a pair of toggle levers, the a lever is designed as a servomotor that can be adjusted easily iüt. On scissors the generic term is designated Art can be a miscut device constructed in this way not transferred, since the position of the rockers is caused by immovable shafts and " whose cranks or eccentric is bestinst. As with other directions of mismatch are inappropriateness "It is noticeable that the adjustment devices that determine the wrong cuts are to be designed for the full load that occurs during the cut.

From the Bf-Ga 1 875 327 it is known that incorrect cuts can be controlled as required by shifting the ankle sockets the connecting rod is under esser beam su effect. At this Version with servomotors via one or two toothed racks old litseln a common lsi ünteraesseröalken Move the stored eccentric shaft in such a way that the ynteraesser is optionally in or out of the cutting position can be brought, it is necessary to use the well-known Yerstelleinriehtrjig sur precise setting of the Cutting knife means provided in the interprocessor bar To do without ezsenterbolsen and instead of the upper cutter bar train adjustable. This, in turn, has the problem of the desired stiffness the swing arm is affected and its maintenance the required stability while maintaining:

660334220.4.72

PATENTANWÄLTE FW HEMMERICH - GERD MÖLLER - D. G ROSSE - 4 - X

the Anctellb? ikeil of the eater the moved hates of the The swing arm continues to be enlarged.

In another known Sinricr.tiing, this disadvantage is TermiedeL, inden the Yerlüngernnr bsw. Shortening of the connecting rod by twisting eccentrically designed bearing shells is effected. This is where it shows: the complicated structure of the multiple bearing shells! having, hachbelissteten bearing out to be disadvantageous, raid the required LMwaudlung the hydraulically effected thrust into a rotary movement requires a not inconsiderable susätslichen effort. Further difficulties arise from the need to adjust the work of the construction devices of both connecting rods in such a way that the Aoisfasr and back-dividing takes place in a mutual arrangement .

It is also known a filling in which the FeMlschnitteinriehtung Ordered from knee-like connecting rods, which are connected or separated by a joint arranged servomotor stretched for a Scisnitt or hunch down to ground a wrong scan. Piping furniture However, it has the disadvantage that the line loves one-sided are fixedly mounted outside the rocker and thereby not the guarantee of a necessary synchronization. sation of the knife sclineid edges — IMLauibahn.

Another set of scissors is in U.S. Patent 3,023,779. laugh the one given there

below -above the quote i.urcel :: '. ^ v. "^ Iv -. ^ Er :: r / _i ~ csisttete

ηεΐ ^: whose sis Heuelst—. :: '. : .- ϊλ :; ..:; icl-a; elj2 ^ re a :: - "" eordne »are the major :. _.-.- ... "e resire ^ k; jzi ?. 2us.-kcnns: .. .-. If ..-;.: - ■: -: li - zljc ..- sich

660334220.4.72

PATENT LAWYERS F .W. H EMM ER SCH - GERDMOL LER - D. G ROSSE - D ~

Here it is noticeable that a special, canner-like enclosed space is required to accommodate the IJiiehebelpasre, which considerably increases both the inertia and the weight of the swinging haters, especially the rocker showing the upper eater, and thus significantly increases the menstruation as well as lie ... ontage and .Vartur.-: considerably more difficult. In practice, 5, a = significant change in inertia caused the vibrating parts dor shear upon actuation of the Fehlschnitteinriciitung by the controllable longitudinal displacement of the CberiLes3err £ -nens occurs added as disadvantageous, <i?, So that there is an uneven running of the scissors and the precision of both the speed synchronization during the cut and the length of the cut material to be cut is impaired. Here, too, the adjustment, i.e. the raising or lowering of the uüf sufficient Lasse of the ObernessertriLgers, requires considerable forces, so that extensive and thus correspondingly heavy adjusting devices are required, cie for their part further increase the lass or inertia of the rocker or, if it is stationary ropes that have to absorb periodic sciiving movements should be provided.

The ileuerung is based on the task of doing the length of the known: -nuten, ziit incorrect sci.iiiiteinric ..; -er. auc _t *; e: tasted: lic \ Ü1K.C · :: ooh-jren zu b-oiieben and the gev / Ui.cci.te or ·. required position of the Unteririe ^ Lerbclkcns i..it eriiL; e; .. on "-. 'ande su reach, oline the stiff ... it -'. r ^ cj.v.in. ion of i.ossor-;: ...! u. ^; x to impair. To Lüoiui jIql r Al: -. ■ Lj ..v.ic to Vjr:.: eidur. · v / pus -.?. chtüile is suggested for: '-: ■ ^ .: uj ... i \ n der bjix'ici.n ^ tor. Guttun "Qi.'.1> dir firing to subdivide the connecting rods transmitting the lower knife stroke in the longitudinal direction and their

PATENT LAWYERS F.W. HEMMERICH ■ GERD MÖLLER D.GROSSE - 6 -

To connect parts to one another by means of a hinge; in The height of the C-joint are the parts that protrude laterally Assigned support surfaces in an arrangement that only one side to the support of the support surfaces The stretched position is slightly exceeded, but on the other hand the connecting rods buckle allows that d2s under eaters during the entire drive cycle below the ".Virkuagsbereici-es of the material to be cut remains; a? j the parts of the fleuel attacking servomotors are able to do this from an extreme Schwenksxellung of the joint can be transferred to the other in a controllable manner. This will result in a faulty cut created, which can be freely controlled with little effort.

The upper parts of the hinged to the Unterinesserbalken Connecting rods can be connected by a shaft, so that

the adjustment of one or more connecting rods on dis each transmitted to others. It is sufficient here to provide a servomotor which acts on only one of the connecting rods. On the other hand, one or more servomotors can also connect directly to such a connecting rod Act on the wave.

At least one of the was recognized as worthy of imitation To equip Fleuel with its parts assigned, laterally protruding levers, to which your connecting rod Attacks a separate servomotor. On the other hand, can also only one of the connecting rods] «hurry to the side with one j cantilevered lever; the one on this

attacking servomotor supports itself with its? .r. ~ eren End towards the lower acer bearer. Bev / Uhrt hot it to be provided as servomotors for hydraulic cylinders. As we sen ti i Cu was recognized, the servomotors were varied which has no significant longitudinal forces on the connecting rods

-7 -

PATENTANWÄLTE FW H EM MER ICH - G ER DMO LLER - D. G ROSSE _J _

effecting phases of movement of the lower cutter bar actuate.

It was recognized as worthy of imitation that the control of the servomotors directly effects control valves spatially assign or let these have the control valves; through direct cultivation short connection paths and direct, • immediate application of the pistons of the servomotors in Connection with a simple assembly and ..artun ^ guaranteed. The control valves are connected to the ends of flexible lines which are used for the supply of pressure medium of spatially fixed pressure accumulators are used.

The characteristics of the Meuerunr are in detail as follows Refer to the description of an exemplary embodiment. It shows:

Fig. 1 is a vertical section along the main drive shaft of an incorrect cutting device having flying scissors and

2 shows the view of a two-part connecting rod of the flying scissors according to ι · 'ί ~. 1 with attacking the subordinate Servomotor.

The essential parts of an oscillating shear equipped with a FeüLschnittei; .- direction are shown in Fig. 1. The oscillating Scherenrai ^ en 1 is on the eccentrics 2 of the drive shaft j _O olo ₀ and is driven by them. The shear bar carries the upper knife 5 on its outer head, which is designed as an upper cross bar

did

PATENT LAWYERS F.W. H EM M E R ICH - G E R D M O LLE R D GROSSE _ Q _

ünternesserbaiken 3 arranged. The ünternesserbaiken is supported on the drive shaft via connecting rods 9 and 10 that are articulated to one another 3 provided eccentric 11 from. The connection of the essential parts> ■ and 10 nit the Ünternesserbaiken 8 is noted by means of a number of 12, which, stored in internal bars 3., on both sides with the Feit connect upper parts 9 and 13 of two connecting rods is, so that inevitably guided the pivoting movements of the upper parts 9 and 13 and then the c-esant movements of the two connecting rods coincide.

In detail, the structure of the connecting rods with their assigned FeulLchnitteinric: .i ;; ng on the basis of the enlarged representation of the Fi '. 2 explained. In the view on u2i. rleuel S, IC is the. ^ ntri = egg roll 3 cut at the time. The eccentric 11 provided for it is supported by the bearing rings 14 and 15 of the connecting rod lower part 1G. The two parts of the rieuels are articulated to one another by means of the bolt 16. The pivoting movement of the joint is, however, restricted by the support surfaces 17 and 18 assigned to the parts 9 and IC so that in the drawing on the right the joint can only be pushed through briefly over the extended length of the parts 9 and IC, while to the left a significantly faster pivoting is permitted; go here lic ^ tL'.tzilächen 13 for .Silage, then the effective

the eighth, dor L? -rsci. ^ Ien 14 and '\ j un ^ the ..eile 12, derari reduced, so that in the upper division of the zxzonters 11 and then of the Ünterinesser bar 8 the under eater no longer gets to the cut.

The pivoting movement is controlled by the bolt 16 by the hydraulic biell motor 19, which is bolted

PATENTANWÄLTE F.W. H EM M E R ICH · G E R D M Cl LL E R · D. SIZE

A lever-like projection 26 of the connecting rod part 9 engages via bolts 21 on a lever-like projection 22 of the connecting rod part 10. The distances of the bolts 20 and 21 from the straight line connecting the axes of the bearing shells 14, 15 with that of the shaft 12 are here such that the servomotor 19 can be designed for not too great a force . The power to be generated by the servomotor 19 remains in particular compared to versions mn t fH T "ol." Tov h \ tc \ ν α π 1 η <3 η h ο y ^{ΔV. Q -} Hi + iziin σ rolniiv ο · «_ ring, since the pivoting about the bolt 16 is not carried out during the cut and thus the servomotor is not subjected to the full cutting pressure either. It has been found to be useful to effect the pivoting during the pure phase of movement of the lower cutter bar 8, in which this does not transfer longitudinal forces opposing the movement to the connecting rod formed from parts 9 and 10 due to its inertia and / or its weight.

In order to achieve low delays in the control caused by signals, it has been found to be useful the valve acting on the servomotor 19 with its drive device 24 directly on or on Servomotor to be provided. The supply of the pressure medium causing the adjusting movements takes place via a high-pressure hose, not shown in the figure, connected by means of a drill or sleeve 25, which is in communication with a pressure medium accumulator. The derivation of the output from the servomotor is correspondingly Lruckmittel, causes. Shows as beneficial it is also in the described embodiment, that the servomotor is to be acted upon only briefly with full power, since during every upward movement the joint 16 moves over the support surfaces 17 or 18 is supported, so that only the during

- 10 -

I · 4 · O O

Il lit ·· »·· * 1 Ml

PATENTANWÄLTE F.W. H EM M E R ICH · G E R D M Cl L LE R · D. G ROSSE __ If) -

the downward acceleration of the lower blade carrier, partly due to gravity Compensated Besciileunigungspunkte correspondingly translated to attack the servomotor 19.

Other modes of operation can also be used.! the miscut device of the above keep flying scissors. For example, when buckling the connecting rod parts of the submesa carrier on provided in the scissors frame, its trajectory within the guides 6 limiting stops are deposited} so that the drive caused by the eccentric 11 only periodic buckling if the lower blade carrier is firmly placed within the scissor frame des Fleuels 9, 10 causes.

By connecting the two connecting rod upper parts 9 and 13 driving the lower cutter bar by means of the shaft it is always ensured that both connecting rods are buckled by the same angular amounts and thus by the same Amounts are reduced. In addition, as already described, it is possible within the miscut device to provide only one servomotor that engages this shaft or, if the asymmetrical load it is not shy of assigning a servomotor to only one of the two connecting rods; takes place via the shaft 12 each has the same kink of the connecting rod, which does not have its own actuator.

Even with the connecting means of the two Pleueloberteile for use '.'felle 12 it can be in a known per se Tte \ se for pitching the upper Essers use. In this case, the running surfaces within the lower blade carrier ge ^ en the surfaces encompassed by the connecting rod upper parts are arranged eccentrically, so that by loosening the

- 11 -

t t

PATENT LAWYERS F.W. HEMM ERICH -G ERD MOLLER · D. G ROSSE

Connection with the eccentric parts, turning the shaft 12 and re-establishment of the connection at any time the deletion exists, with simple means the employment effect of the bedknife.

! j

^ -r- st

> Λ

- 12 -

Claims (1)

.W. HEMMERICH 243/49 * II
t
II 11 * I
. > I.
:
1 1
■
I ■ * 1 t ■
t IS
> ■
I. - 12 - 3 PATENT LAWYERS F S. 48 - GERD MÖLLER D. . GEOSSE Ref./ G Gm Jan. 22, 1971 g.we 30643 SlEMAG Siegener Laschinenbau Gmoü, 5912 Milchenbach-Dahlbruch Protection claims Flying scissors with one by eccentric periodically swiveled rocker arm., which with through! Equipped with more effective rocking or eccentrics with counter-rotating Ilessers is, the upper part of which is held by a.! ess he bar arranged on the swing arm, while the lower one, guided longitudinally displaceably in the rocker arm, is attached to the eccentric assigned to it via connecting rods supports, nit associated with the connecting rod, hydraulically effective, the effective countries controllable o.elluotorsn, characterized in that the £ t the Un erne si he abstützender beam (8). The connecting rod is divided in the longitudinal direction and the parts (9, IC) are connected to one another by a joint (16), and dsl: the parts laterally cantilever at the level of the joint; or.de «tutzfllLcnen (« 7, 18) are assigned in an arrangement, di-w r.ac ,. One oei-e up to the edition of the Jt ^ tzflUcherj only one rerin ^ e .exceeds the fcctreciten La ^ e, after the other jei: e but one of the & ni it buckles: 1 connecting rod allows, that ^ the ur _A * _u cr-L.eGüer - .. l -: - rend ijs _t esc; n: en. ^ drive cycle below dec. : r..u :. ^ Ljioi ^ hes aes ^ 3: _neid ^ tes remains, ui: i du- u: ^ ^ i. ^^^ otoren (ii) to the parts 5.or connecting rods - 13 - PATENT LAWYERS F.W. HEMMERICH GERD MÜLLER D. GROSSE // 2. Flying shears according to claim 1, characterized by an upper hinged to ünternesserbalken (8) Parts (9, 13) of the connecting rod connecting IeIIe (12). 3. Flying scissors r.sch beginning 2, characterized in that a directly on the .'eile (12) or on one of the Connecting rod (S, 10, IJ) acting servomotor (19) is seen. 4. Flying scissors according to claims 1 to 3, characterized in that at least one of the connecting rods has its parts (9, has associated, laterally projecting levers (22), lüit those of the servomotor assigned to the connecting rod (19) is united in one end. 5. Flying scissors according to claims 1 to 4 _S. characterized in that: one of the parts (9, 10) of the connecting rod has a laterally protruding roebel and Hex with dies-x: servomotor (19) connected at one end is supported at its other end against the submersible carrier (6). c. Flying scissors according to claims 1 to 5, characterized by ~ e, because a hydraulic cylinder is provided as o'.ellnctor (19) is. 7. Flying Shears nech Α: .5> · \ .ο:. & :: 1 eis 6, uurc .. ~ e £ .ei. zzei - Ci-- O "» * TI 1Π "* ίΤΐΐΑ" Γ "Ί T ³ Vo T-" X Valves v-3) -u: \; t; isen, un. ia_. The valves are equipped with an insert for flexible ducts for which flexible ducts are provided.