DE1427948A1 - Device for stretching strip metal - Google Patents

Description

DR.-ING. WALTER ABITZ 1 Α279Λ8 _{8MÖ | lchen27 Pien2enauerstraße} ^

■ DR. DIETER MORF Telephone 483225 and 486415

Patent attorneys Telegrams: Chemindus Munich

April 16, 1968 26 26VM 57

UnerbfSN, 1 MHi enbedtojt ongtbwi

Fl * 27 9 * 8. 2
New documents
THBIfBMLBOZCONBMlYLIMITED 57 "Baker Street" London "W. 1" England

Device sub stretching of strip metal

The invention relates to the device for stretching ligaments. tall »» it rotatable entry and exit support rollers, ie Distance from each other long lie the tape to be stretched and over which the tape is attached »bit rotatable clover rollers, which press the tape against the backup roll, and one using an orphan assembly for applying pressure to the belt during stretching.

As is well known, with a metal »this can be reduced to a thickness of about 0.25 BB su long «strip metal is rolled» in less or higher mass a number of errors occur in his fons. SBu include these errors:

(a) KruBBung or edge wandering, which is the greatest deviation of the longitudinal edges of the tape from a straight line Line is and no longer the son of Blechen

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Leaves out of the band with correct angles;

(b) wavy edges »caused by compressive stresses near, the edges of the tape and by tensile stress in the middle of the strip and have the consequence that sheets cut from the strip are not flat, eo that during the Advance of the sheet metal during printing, painting and stand difficulties

(o) humps or tucks in the middle of the ribbon, which usually from pressure in the putty of the belt and tensile stresses in the vicinity of its Longitudinal margins are caused;

(d) the seaweed effect, which is a combination of the below

(ft), (b) uüfi (o) specified error 1st; ■ ■■ -_ * "" "'

(a) BuokelkmÄten, which are usually the result of a Damage to the tape caused by the "guide elements" and

(f) nicks or crevices, which usually result damage to the tape after winding are *

In addition to the afore-mentioned errors, a Yeränd © -

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some strength properties due to aging occur This can be determined by subjecting a sample of the strip material to a tensile test. Dae aged Band can be checked by the occurrence of a discontinuity on the Vlossgrense in the stress-strain diagram. Tape material that has such shortcomings in the peatigkeitstigensohaften has, cannot be plastically deformed smoothly with complete success. For example, if Aged tinplate is used but making open cans often occurs an ar? "Corrugation" or paneling " occupied state, so that the cylinder can be polygonal instead of white circular. Can ends coming out Aged tinplate can have flow figures (Ludersohβ lines), which decrease the flow line discontinuity and a decrease in deformability. Sole can ends are geometrically imperfect and sound low scale! Jit »t, especially with« Tief · drag, or it occurs irregular and not tickle First up · ..

Formally, in the production of a tape emergency, a "dressing" ¹¹ and superficial catfish with a small diameter but machinable treatment are used to reduce the errors and to hide the yield point

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Rolls and massive belt tension «resulting in a characteristic Tension curve within the thickness of the belt, that is under compressive stress in the vicinity of the surfaces and under tension in the middle subjected to a roller straightener /

The tension curve is in a trained band Aging influences and although the well-known roller brazing process be able to correct the tension curve in the strip material immediately before cutting it into sheet metal, if the roll diameter is sufficiently small "Igest yourself" especially for tinplate used for the production of open-topped cans with a thickness of less than 0.25 mm find that the effect of roller straightening f or the elimination of the flaws in the geometry of the belt and in whose strength properties are negligible ·

The invention is based on the object of a strip material by means of a particularly simple roller arrangement in addition to tensile stress for the purpose of eliminating the geometrical defects The metal band also has a freely selectable pressure stress in order to prevent the occurrence of flow figures (LUdersohen Lines) which have occurred in known arrangements so far ο

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The device is characterized by two spinning rollers running at different speeds, around which the strip runs from the center to the exit support roller, one of which can be rotated around a fixed axis and dl · and · «· tension roller around an axis * dl · movable in the direction of the fixed axis and away from it / and the device for exerting pressure on the belt acts on the tension roller rotatable around the movable axis, via the belt section, Qet is grasped by both clamping rollers at the same time , exerting a radial pressure load, whereby all rollers are smoothly rotated by a gear arrangement.

The known arrangements allow either, like the arrangement of the USA patent 2 332 796) not «the pressure test to be wound freely regardless of the tensile stress on the tape, including the tape for the purpose of removing upper " fltahenururcgelsilgkeiten a certain compressive stress grant, od * r al · are like the arrangement of the USA patent notice a 226 948 Insofar more complicated than it is to carry out miss the streok and pressure (i.e. water) treatment Pairs of rollers “demand” quite apart from that, that they do not conform to the application specified in the invention.

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Notwithstanding the large number of known devices for Stretching and rolling can be the basis of the invention not fulfilling the task at hand with the same structural simplicity "

For a better understanding of the invention, it is described below on the basis of exemplary embodiments in connection with the accompanying drawings * namely show:

Flg. 1 In a schema-like representation, an embodiment form the device according to the invention;

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VIg * 2 In the same representation, a second embodiment the device according to the invention;

Pig · 3 a sate of gears for driving the rollers used in the Vorrlohtung of Figure 2;

Flg. 4A and 4B

together in elevation and partly in the form of a part of a machine with that in FIG. 2 and 3 schematically illustrated device;

Fig. 5 is a view in section along the line V-V in fl. 4B;

FIG. 6 shows a view in the filament according to the line VI-VI in FIG. 4B and FIG

In the drawings, denote in the various figures same parts.

In the arrangement according to FIG. 1, the cold stretching takes place a band 1 made of metal in such a way that the band in his Is moved longitudinally and at a certain point along the path of the tape this in its longitudinal direction gradually exposed to tensile stress around stud whales and its linear speed locally

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at the same time, the tape is given a permanent degree of reek, the opposite sides of the tape being subjected to pressure stress in order to avoid the formation of undesired plies on the tape and to transfer the required surface quality of the straightening rollers to the surface of the tape.

Volume 1 occurs at the specified point mentioned an Eiiwtrlttsetütswalse 2, which can be rotated with a shaft 3 is ι and a first pair of Klemmwalseh 4, 5 sin, which be carried by a carrier 6 and the tape against that Press on Stütswalee 2 * The pinch whales 4-, 5 Kiemokraft exerted can be hydraulic or mechanical Facilities' are exercised and wjLrd in the in Fig. 1 shown en execution form duroh a compression spring 7 and a Vereteileohraube 8 exercised

When leaving the etütswalie 2, the belt 1 is guided, among other things, a first tensioning roller 9 and then, among other things, an iwelte tensioning roller IQ as well as around a wider or exit bag roller 11, which last bit of a shaft 12 can be rotated and against which the tape is rotated by a second pair of pinching rollers 13, U is pressed, which is carried by a support 15 "which is provided with a compression spring 16 and a Veretell ear tube * The orphan 9 is rotatable with a shaft 18 while the whale 10 is rotatable with a shaft 19, the voir.

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a carrier 20 is worn, which one? is provided with suitable means that make it possible to move the orphan 10 to the orphan 9 eu or from this v / eg. During the transition between the folds 9 and 10, the belt 1 is exposed to a local pressure which is lower than the scattering force but sufficiently high to prevent the formation of pleated figures (Luder's lines) mechanical smock wii'd exercised. As shown in Fig. 1, a compression spring 21 and an adjusting screw 22 are provided for the exertion of pressure Rolls 9, 10 subjected in such a way that the peripheral speed of the roll is greater than that of the roll 9 *

In the described embodiment, the rollers 2, 9t 10 and 11 have a hen diameter of 50 cm (20 ") and the clamping rollers 4t 5 and 13, 14 each have a diameter of 30 cm (12 ⁿ ). The gear wheels shown are driven to rotate, with the pinch rollers 4t 3t ¹ 3 and 14 having a circumferential speed that is equal to that of the backup rollers 2 and 11 «The rollers 2, 9 are geared to one another in the ratio 1x1 * The rollers 10, 11 can-also Im Ratnia 1: 1 be interlocked to same

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maintain

Me diameter of the tension rollers 9 _f 10 and the gears located between the latter oinä selected so that the desired difference between the peripheral speeds of walking, is obtained ,, which is between $ 0.5 and 5 is fo "When the tape to only a small degree of stretching is to be subjected to, the ratio of the gears driving the rollers 9 and 10 can provide : 1 and a difference in the peripheral speed of the orphans can be achieved by making the diameter of the orphans larger! than that of the orphan 9. On the other hand, can ₉ if a greater degree of stretching is required _? this through it

* can be achieved that a suitable ratio is selected for the rollers 9-10 driving gears and the diameter of the Waize 10 is made larger than that of the roller 9. If the device for carrying out a

Temper stretch leveling process is used, the strip is subjected to a stretching below 2 # in combination with the aforementioned local compressive stress, which is less than the stretching stress, while, when the device is used to carry out a cold stretch rolling process ) is used, the tape is subjected to a stretch of 2 # or more up to 5 $> in combination with the aforementioned pressure test, which is less than the stretching stress. The band 1 learns while it is locally

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swisohen the rollers 9, 10 subjected to a pressure load is, a certain plaetleche stretching through the greater peripheral speed of the orphan 10 compared to that of the orphan 9

To ensure an even treatment of the band 1, elnd the orphans 9 and 10 and the Kleram rolls sum Compensation for the durohm bend convex. Since the procedure is mainly a stretching procedure, and the Whale forces small and let the crowning small and from the width and the material of the band and the dimensions of the Orphans dependent. For example, the crowning of the pinch whales 4, 5 and 13, 14 can be about 0.75 mm (0.030 ") and that the orphans are approximately 0.15 mm (0.006 ").

The diameter of the first orphan orphan 9 is slightly larger, about .05 pounds larger, than that of the entrance whale 2, while the diameter of the second tension roller

10 slightly larger than that of the exit support roller

11 1st sum compensation for the gradually increasing elastic strain in band 1, which is caused by the effect of Back-up rolling is caused.

The device shown in Fig. 2 to 6 operates in a similar Welse as that described in connection with Fig. 1, * However, it is designed so that the conditions of a

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low coefficient of friction is taken into account, which exists in lubricated strip material with a high linear Speed »'folding of high surface quality is fed. Such conditions are common when straightening tinplate strip on, which at a speed of about 275 m / min (900 ft./min).

In this embodiment of the invention, it approaches the tape

1 of the single pinch roller 5 is substantially horizontal and

* ο is led around this with a loop of 90, so that it is between the pinch roller 5 and the entry support roller 2 and between the latter and an auxiliary entry support roller 2a runs. After leaving the roller 2a, the belt is guided around the tensioning rollers 9ι 10 and passed between these, it being the aforementioned subjected to local druokbean testing and local stretching whereupon it comes to an aid support roller 11a, the exit support roller 11 and a single pinch roller is shown around.

They rollers 5 »2a, 11a and U are with shafts 23, 24, 25 and 26 rotatable, wherein Fig. 3 shows the gear set for the rotary drive of the various rollers. From Pig. 3 it follows that the spans 9 and 10 are driven to rotate by gearwheels 27, 28 which are in engagement with one another,

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the orphans 2 and 2a by the mutually engaged Gears 29 and 30, the rollers 11 and 11a through the meshing gears 31 and 32, the rollers 5 and 14 through Gears 33 and 34, which mesh with gears 30 and 31, with gears 27, 30 and 27, 32 freely rotating gears 35 and 36 mesh.

The orphans 2, 2a, 9 »10, 11a and 11 have a nominal diameter of 50 cm (20") t, however, the rollers 2, 2a and 9 have a smaller diameter than the nominal diameter by the certain stretching of the belt, as described above , see below · The pinch rollers 5 and 14 have a nominal diameter of 40 om (16 ") · The diameters of the individual orphans are corrected according to the elastic stretching in the belt in order to minimize slippage between the belt and the orphans of high surface quality . The number of teeth of the gears 33 and 34 is proportional to the diameters of the pinch rollers 5 and 14, and the track gears 30, 29 and 27 have the same number of teeth proportional to the diameters of the rollers 2, 2a and 9. The gears 28, 31t 32 can same number of teeth as gears 30, 29 and 1? win the increased peripheral speed is achieved by keeping the diameter of the orphan 10 larger than that of the roller 9 · If, however, • a higher degree of stretching is required, the number of teeth of the gears 28, 31 * 32 are smaller than those of the

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Gear wheels 30 * 29t 27 * The step- rotating gear wheels 35 »transfer the drive between the back-up rollers and the tensioning rollers o

4 to 6 show part of a machine with the device shown schematically in FIGS. 2 and 3 »

From Fig. 5 it can be seen that the rollers 2, 2a, 9, 10, 11a and 11 are mounted in bearing blocks 37 of the same type which are arranged between an upper and a lower machine frame element 38. A bearing block 37 is provided for each end of the shaft of each roller. The blocks 37 for the rollers 2a, 9 and 11a are connected to two parallel members 41 which are carried by blocks 42 which are arranged in grooves 43 of side frame members 44, the wheat 2a, 9 and 11a, which are supported by the blocks 37 are loaded towards the opposing rollers 2, 10 and 11 by hydraulic devices 45 called load cells and acting through spacer blocks 46. The parallel links 41 serve to accommodate the lateral S _o hubee or the horizontal component of the band tension reaction of the treated band. In order to facilitate the assembly of the roller arrangements, the bearing blocks are

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provided with wheels 47, oils run on rails 48 carried by the frame members 44.

From Fig. 2 and 5 can be seen 'that the tensioning carriage 9 _f 10 are arranged one above the other and extending between the support roll pairs 2, 2a and 11, 11R bofirrVm.

In order to prevent damage to the hardened surfaces of the rollers, each bearing block 37 is not adjustable Abetandekeile 49 provided. The lateral Rp.hroentlemente 44 hold the roller assemblies laterally and are between the upper and lower frame members 38 arranged, which are clamped together by bolts 50, which the by the Load cells 45 exerted resistance Afford.

The Klemmv / alzen 5 »14 are supported by bearing blocks 5i, which are hinged at 52 to the carriage 53, welahe with wheels 54 are provided, which run on an S _c hienenführung" of which isplays a, as shown in FIG. 5, "of the upper frame member 38 and one from the side turning member 44. This arrangement of the bearing blocks 51 facilitates the dismantling of the nip roll units from the frame. The Kienualcraft is exercised by members 56 which are articulated at 57 with BUgoln i> 8 and carry a roller 59, dio against a curved part

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of the bearing block 51 is supported. The links 56 are actuated by the piston rod 61 of a hydraulic cylinder 62 At one end of the bracket 58 is attached to a pin 63 steered and loaded by load cells 64 · Bas other The end of the bracket 58 is connected to an adjustable clamping bolt, which together with the clamping roller reaction force non-adjustable bolt 66 (Fig. 4B and 6) receives. Adjustable Stops 67 prevent damage to the hardened surfaces of the clamping wheels and the backup rollers 2a, 11a.

The gears 29t 30; 27, 28 and 31 »32 are all going through connecting gear clutch assemblies, two of which are shown in Pig. 4A are shown at 68 representing the Provide drive to the rollers, which fluctuate in their diameter and thus in the distance between their central axes can.

Including passing the tape 1 through the device To facilitate this, guides 69 are provided, as shown in FIG. 6.

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The operation of each of the embodiments described above Is the same and every execution can optionally for cold stretch leveling or for »cold stretch rolls vex'weuaev weraen «

When the device is used to "straighten quay" is the belt through the tension rollers 9 # 10 a local star elongation of less than £ 2 in combinat lon old subjected to local pressure, the lower 1st than the stretching stress, but sufficiently high » uai dl · Formation of Pllessfiguren (Ltlderssohe Linien) to

When the device is used for cold stretching rollers, the strip is subjected to local bed-like stretching between 20 and 5% by the tensioning rollers 9-10, which is less than the stretching, but sufficiently high «Ua dl · to prevent the formation of plies (lines)

IS was determined that "ImIb Kalt etreokr is worthy of or" Kaltatreckwalaen according to the method and according to the device gWBirä d · »Flundung only requires the formation of plleeaflgurs (LOderssdhe lines) is prevented, but auoh one

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The preferred tension flow within the licka of the ligament is returned or communicated that the fluidity is concealed and the hardness of the banoea is maintained or corrected, and in some! "" all is slightly increased. The elasticity of the andeo becomes Improved " \ ste uich" from the lack of flow figures in the stamped parts made from the treated tape results in "Furthermore, the surface of the tape is treated by the ifrad of the surface quality of the clamping orphans 9i 10, which in many cases improves the appearance of the surface treated tape, even if the tape was badly indented or wrinkled prior to treatment.

Here let to mention that in juder the described Execution form of the device according to the invention as a result the very high tension in the band is equal to the stretching tension and multiplied by the cross-sectional area of the belt, the exit bag roller can perform a very large work has ι because the belt tension acts in the opposite direction to the direction of belt movement. A high percentage of the work will however, the device is fed back again by the entry support roller, since both the belt tension and the belt movement take place on this in the same direction * The work is transmitted through the gears and the drive motor, not shown provides the work necessary for stretching »

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Claims (2)

/ J H27948 P 14 27 9 * 8. 2 April 16, 1968 Natal Box Comp, Ltd. 26 2 & / H 57 * J ι indicate onledinflt: New patent claims 1 · Device for stretching strip metal, with rotatable entry and exit points, which are at a distance from each other on the day of the stretching tape and around the the tape is led around, with rotatable lCleon whales that the tape against the backup roller -prcsseb, and one using a Valsenanord & ung working facility Applying pressure to the tape during dea Stretching, characterized by two tensioning rollers (9, 10) running at different speeds around which the belt (1) as it moves from the entry point (2) to the Auslittsstütswalse (11) around, of which one (9 or 10) is rotatable around a fixed axis and the other orphan about an axis that can be moved in the direction of the fixed axis and away from it, and the device (20, 21, 22 or 45) to exert pressure on the belt the clamping orphan (10), which is rotatable about the movable axis, acts to act on the band absohnitt of the two clamping whales glolehseltlg orfaaut is a radial pressure exercise, with all rollers (2.11, *, 5.1 *, 13.9, 10) rotated on the same side by a drive arrangement (27-3 *) will· Bathroom original 9098U / 0117 ^U27948 2. Device according to claim 1, characterized in that the tension rollers (9 * 10) one above the other and between the entry and AustrittsstUtswalsen (2,11) arranged sand »the with an auxiliary entrance ss'attfczwalze (2a or an auxiliary sausgabe ssttttzwalze lla) are combined, the rollers (2 * 2a; 11,11a) of the pairs mentioned are arranged one above the other and the Entrance and exit whales (2.11) for rotation in fixed Are stored while the auxiliary / jattitzw & laen (2a, lla) are arranged in movable bearings, which move of the auxiliary rollers (2a, lla) towards the support rollers (2,11) or enable away, and the pressure exertioni-nrichfewigön (45) rides the movable lasers together & nm & mirirkeiij, i * m the auxiliary .- · support rollers (2a, lla) to the support roller ^ (2,11) to bel & sfcen ^ in order to prevent the tape (l) from sticking between the pairs of rollers (2,2c; 11,1Yes) jeu cause-, 3. Device according to claim 1 or 2, characterized in that daao the movable edges of parallel glass (41) carried by the fixed Eahxieaslenientu (44) are stored in such a way that they contain the weighing components Vorrlchtims xiach the Anuprtluhan 1 to ^ "germinated thereby cit, (iass the Klainawaisen (5 * 14) in K ^ ORIGINAL 9090U / 0117 t j H27948 IJI (51) are rotatable «for the pivoting movement on the support rollers (2 * 11) are arranged towards or away from these, for which Exercise of the adhesive force members (56) are provided, the are articulated on fixed brackets (58) and carry rollers (59) which see curved parts (60) of the rail roller bearings (51) support »whereby the Kleno roller bearings (51), inter alia, joints (52) can be pivoted through the piston rods (61) of hydraulic cylinders (62). BAD ORiGINAL 909814/0117