DE1561182A1 - Device for processing a material web - Google Patents

Description

The invention relates to an apparatus for performing sequential Operations on a moving web of material, such as a web of consecutive one another affiliated business f ormxilare, namely in Tntervalien along the length of the track, in particular to an improved drive device for such a device, to an accurate to create uniform spacing between the work processes on the web.

When making a machine to run successive Operations on a paper web are always difficult to find a very exact match or a very exact distance between the successive work processes

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going to ensure. In the production of consecutive Rows of transverse perforations along a paper web running in a printing press by two perforation knives,

at
. which are attached to a rotating cylinder, for example

a problem in getting an exact distance between successive ones Maintain rows of transverse perforations. This problem is usually caused by the fact that the attachment of the two perforation sea is exactly diametrically is difficult in opposite places on the cylinder and / or that even with very precise machining small Eccentricities or errors in the spacing of the teeth occur with the gears that drive the cylinder or fuse the cylinder with other drive elements on the press, causing an irregular timing or phase adjustment the knife is effected relative to the web conveyance.

With a perforator or two mounted on a cylinder If the knife does not touch the web in the exact temporal relationship to the web path, this has an accumulation of alternating result in long and short distances between the successive rows of transverse perforations. Venn the railway then folded in a zigzag shape along the perforations is created to build up a batch of business forms an inclined stack that not only gives cause for complaint with regard to its appearance, but also a very difficult problem in packing the forms in a rectangular box or the like without the Forms get wrinkled. It is therefore very desirable, i.e. ο

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Rows of transverse perforations over the length of the web exactly in Keep a distance from each other so that the following zigzag folds of the web into an erect pile of flowers with hands aligned vertically.

^T fenn been a state of irregular spacing of the H.uerperforationen has occurred, it has been customary to inferior one of the knives or to each other to rotate the Antri.ebszahnräder relatively long, was fixed to a position where the error bed in a gear the error in another gear cancels or neutralizes. Such an attempt at troubleshooting is not only time-consuming, but often requires replacement of the gears and thus leads to the need to keep a supply of extra gears on hand.

Although the drive device according to the invention is ideal for use in making successive series of transverse perforations at intervals along the longitudinal extent a paper web is suitable, but it is understood that it is within the scope of the invention, the drive device as well when executing other successive, spaced apart To use operations on a moving web of material when it is desired to be very accurate Distance between successive operations to maintain. For example, the improved drive device can be used in the formation of successive folds on one Web as well as when printing successive prints are used, with a precise setting between the

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Drive gears and the FaIt or pressure elements attached to the driven cylinders results. It goes without saying also that the device according to the invention is not limited to the processing of a paper web, but also with ' the processing of continuous lengths of other materials, such as plastic foils, metal foils or the like, can be used whenever it is desired, a precise distance between to adhere to the sequential operations performed on the material.

Accordingly, it is a primary object of the present invention to provide improved apparatus for performing at a precise distance successive work processes lying on top of each other to create on a continuously moving material web *

As a further aim, the present invention provides such a device with a drive device that is expediently arranged Contains facilities by which the device can be quickly adjusted to obtain the exact uniform, .. Keep your distance.

As a more specific object, the invention provides a (Sotf & t, such as above, that is a cylinder mounted on a shaft and having a pair of diametrically opposed elements mounted thereon, the successive Perform operations on the moving material web, and there * also a gear to drive the cylinder. contains support shaft, and in which the gear rotatable on a

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. Axis is arranged offset from the axis of the shaft

• - ^: '_'. "■. ■■■" ■■ - "-

is that a rotational setting of the gear relative to the

Shaft precise alignment under the teeth of the gear, the elements fixed on the cylinder and the axis of the '■' wave enables. '<

As a further object, the invention provides a device, as stated above, in the one plane passing through the axis of The shaft and the offset axis of rotation of the gearwheel is almost parallel or at an acute angle to a plane, which passes through the two diametrically opposed elements mounted on the cylinder so that a slight Rotary adjustment of the gear on its staggered Axis the elements precisely in relation to the teeth of the gear that drives the cylinder.

As a more specific object, the invention provides a drive device for a device that forms successive rows of transverse perforations atif a continuously moving paper web * where the distance between successive Rows of perforations is exactly uniform, so that the web then zigzag along the perforations can be folded, ur.i a vertically oriented stack to generate folds. /

The invention is then based on the drawing of a Embodiment of the invention explained in more detail. Show it

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Fig.1 a schematic side view of a transverse orational, device, in the general viewing direction of the Line 1-1 of Figure 2;

• Pig.2 an enlarged partial view of a drive device for the device according to Pig.l, partially in section and carried out according to the invention;

Pig.3 is an end view of the drive device shown in Figure 2;

Pig. h is a partial sectional view of a drive gear and a load-bearing hub in the direction of view of the line hh in FIG. 35

Pig. 5 a schematic view of an an_ shown in Pig. 3 drive gear, which enlarges a slight out-r represents a directional error, which is sometimes due to Errors in the drive gears and / or in the attachment of the transverse perforation knife occurs and

Pig.6 is a view similar to Fig.5 showing the aligned The relationship between the drive gear and the knives, as shown by that shown in FIGS Device is created.

Reference is now made to the drawing which shows a preferred embodiment of a drive device according to the invention represents. In the present case, the device is in »

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'' Connection to the drive of a pair of cylinders for a. Cross- * perforation device shown and described. As mentioned above, however, it goes without saying that it is within the scope of the invention to use the device for driving other devices, for example a pair of printing cylinders.

As is generally the case near the end of a web printing press, the .G _e advises shown in Fig.l contains a cylinder 10 with two diametrically opposed perforation (or FaIt) knives 11, which alternately engage the surface of a hardened impression or support cylinder 12 come when a paper web W is guided by the guide rollers 13 partially around the support cylinder 12, so that the web between the cylinders 10 and 12 is conveyed. As mentioned above, it is very desirable to form the successive rows of transverse perforations on the web W so that the spacing between the rows is precisely uniform so that when the web is folded in a zigzag manner as shown in Fig. 1 (by an apparatus not shown ), the forms or folds I ^ produce a vertically erected stack and the corresponding folded edges 16 are aligned with one another in the vertical direction.

If, as also mentioned above, the cutting edges are called the

Knife 11 not exactly at a distance of 180 from each other ataf the cylinder 10 is arranged with respect to its axis of rotation are, ööer if the drive gears for the cylinder 10 are not are carefully made, the non-uniform distance between

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see alternating long and short splits Ik from the successive rows of transverse perforations, which lead to an oblique stack. However, while the spacing between successive transverse perforations usually does not vary more than 0.254 mm (3/4 inch), any small error in spacing has been found to result in a skewed stack.

As shown in Figures 1 and 2, cylinders 10 and 12 are mounted on shafts 18 and 20, respectively, each of which is rotatably supported in bearings 23 between two vertically extending frame walls 22 (only one side is shown). The outer drive end portion Zk of the shaft 18 is reduced in diameter to form a shoulder 26, and an axially extending spline is also provided in the portion. 27 trained. A hub 28 is mounted on the end section Zk , placed against the shoulder 26 and connected to the section by a wedge 30 for performing a positive rotation. The key 30 sits in the keyway 27

A cylindrical surface 32 (Figure 2) is formed on the hub 28, and it has an axis 33 which is offset or eccentric with respect to the axis 35 of the shaft 18.

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A radially extending flange 38 is formed as an 'integral part of the hub 28, and it is provided with a number of openings kO (one is shown in Figure 2) and a slightly larger * cylindrical opening 42 which is in the middle between two recesses kk (Fig.3) is arranged. The recesses

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are worked out in the circumference of the flange 38. Through the flange extend from each recess 44 opposite one another © and aligned set screws 45 in & ie opening 42 screwed into the flange.

A split gear wheel with sections 46 and 48, each of which has an eccentrically formed bore 4 {? and teeth 50 is mounted on the cylindrical surface 32 of the hub 28. The bore 49 is formed so that its axis is offset from the axis of the pitch circle of the gear wheel, which is generally concentric with the ¥ ellenachse 35, by an amount equal to the offset between the axes 33 and 35. The gear section 46 is fastened to the flange 38 by three screws 51 which extend through the corresponding openings 40 and are screwed into the gear section 46. The furthest inward-lying gearwheel section 48 is fastened to the gearwheel section 46 by means of screws 52 (FIGS. 3 and 4), which extend through openings 54 formed in the gearwheel section 48 and are screwed into the gearwheel section 46. As shown in Figure 2, the openings 40 are slightly larger the diameter of the Söhrauben ■ 51 "so that _c in dissolved or loosened S hrauben 51, a relative rotation between the gear 46 and the surface 32 about the axis 33 _to be held forth as can.

Reference is now made to FIG. 3. The teeth 50 on the » Gear sections 46 and 48 mesh with the teeth 551 on a driving gear 57 are formed, which in turn on

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the shaft 20 which carries the impression cylinder 12 is attached. The gear 57 is in turn driven by a gear 60 which forms part of a gear train which is driven in timed relation to the movement of the web Tf. The gear sections 46 and 48 are provided to prevent backlash or backlash between the teeth 55 on the driving gear 57 and the teeth 50 formed on the corresponding gear sections 46 and 48. This is achieved in that the S _c hrauben 52 are disengaged and the gear 48 is rotated relative to the gear 46 steps until substantially any play off worattfhin the screws 52 again tightened v / ground. However, it is understood that the split gear structure forms at sichtein part of the present invention, but is only shown therefore to the possibility of combining the anti-backlash feature with the device or G _e of the invention advises according to identify.

In an opening 64 (Pig.2) formed in the gearwheel section 46, a pin 65 is rigidly attached, which has a head section 67 which extends axially into opening 42, which is worked out in the splash section 38 of the hub 28. As shown in Figures 2 and 3, the diameter of the opening 42 is slightly larger than the diameter of the head 67, see above that the gear 46 by an amount relative to the Plansch 38 of the Hub 28 can be rotated, which is equal to the difference in diameter between opening 42 and head 67. When solved Screws 51 can be the gear section 46 on the cylindrical

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Surface 32 of the hub 28 by the screws V _e rstellung 45 are rotated, whereby the axis 33 of the gear holes of the trowel 18 is displaced relative to the axis 4α ■ 35th

Reference is now made to Fig. 5. To show a typical state that can be achieved with a drive device according to FIG Invention can be rectified, sirad opposing each other Pairs of teeth 50 on the gear section 46 angularly shown offset by a distance B from a plane, which runs through the knife 11, where the distance E represents the error. This offset is for the purposes of illustration drawn exaggerated as E is usually 0.127 now (θ.005 inches) does not exceed what "an error in the Kesser distance of Is 0.254 mm (0.010 inch).

The distance E can also be an error in the attachment of the Represent knife 11 on the cylinder 10, whereby the knife not exactly around ISO from each other with respect to the ¥ ¥ ¥ ual axis 35 are arranged. According to the invention and due to the offset ratio between the hub axle 33 and the shaft axle 35 can be adjusted by adjusting the screws 45 and turning of gear sections 46 and 48 on hub 28 have teeth 50 on the gear sections exactly with respect to one by both Knife 11 aligned or adjusted to the running plane. This aligned relationship is shown in Figure 6.

It should be noted, however, that due to the proportionate small eccentric displacement of the axis 33 in relation © AD ORiGiMAi

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on the axis 35, a rotation of the gearwheel sections k6 and kB on the hub 28 effectively causes an upper tooth (Pig.5) to be displaced in one direction and a lower tooth 50 to be displaced somewhat less in the opposite direction. Thus, it is in fact the differential displacement, which causes the corrective adjustment * Although firher a small eccentric V _e rsetzung between the axes b # fo rzugt is to enable a fine, precise adjustment, it should be understood, however, that a coarser adjustment can be achieved if the offset between axes 3JJ and 35

-. * '' is enlarged. ! ..

For example, the gear portion k6, at the bottom part of the Flänachee 38 "and by lateral displacement of the ZahnradabschnitWs the top of the flange rtahe a coarse adjustment geschafd, by pivotal mounting one's gear, similar | W.fa Further, when a gear similar to the gear portion U6 on. Cross slide part is mounted so that the gear can be adjusted laterally relative to its supporting hub part, a coarse setting or more direct setting to correct misalignments is also used.In each Pail, however, the axis of the relative to the axis of the supporting shaft for the gear ^{7 is} set.

As shown in Pig. 5, it is desirable / that the axes 33 and 35 are arranged in relation to one another so that they delimit a plane that is almost parallel to or under one

* X

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'. small pointed ¥ angle to the plane of the two knives 11 extends. An adjustment of the pin 65 within the opening 42 results in a minimal vertical movement of the gearwheel 46 relative to the head 18, which in turn reduces the change in the engagement or meshing between the teeth 55 of the gearwheel and the teeth 50 of the gearwheel section 46 to a minimum Value is held. However, while some lateral displacement is caused when the gear portion 46 is adjusted, the displacement is usually so minimal that the engagement is not appreciably affected. .

A drive device produced according to the invention has thus numerous desirable merlanals and advantages. Mainly by a relative rotation between the gearwheel sections 46 and 48 on an axis which is offset from the axis of the heads 18 or is arranged eccentrically, the teeth 50 can the gear wheel 46 relative to the knives 11 on the perforation cylinder 10 can be precisely adjusted, whereby tolerances, the occurring during the manufacture of the teeth 50, balanced will. The knife 11 can also be adjusted so that they are exactly at a distance of 180 with respect to the Axis 35 of the heads 18 lie so that a rotation of the heads 18 via the drive connection between the edges 60, 57 »46 and 48 uniformly spaced rows of transverse perforations are created in the web F.

If so. the drive device shown in the drawing

is ideal for use with a perforation device, BADORIQiNAL

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which has a cylinder on which two diametrically opposed to each other opposite perforation knives are attached, it is - ' It is evident that the device can also be used for other cylinders on which two elements are attached, the . successive operations at intervals along the Carry out longitudinal expansion of a material web. That is, the drive device according to the invention can always be used if desired, between in successively executed Work processes must be kept at exactly the same spacing.

A feature of the invention is further directed to the fact that the gear section k6 can be easily adjusted on the hub 28 by simply making appropriate adjustments to the screws 45 which are arranged next to the outer end of the ¥ elle 18 and are outside the side frame wall 22 that carries one end of the ¥ elle. The heads of the screws 51 are expediently arranged so that the gear section k6 for; Adjustment purposes can be solved.

The drawing shows the drive device according to the invention attached to the end portion 2k of the shaft i8, which the Perfo- '

ration cylinder 10 carries, but it is understood that as

j Alternatively, the device can also be loaded on the skin 2O

can be strengthened, which carries the counter-pressure roller 12. Regardless of on which Light now the device is attached, it is, however, preferred that the axis θλ 33 and 35 in parallel einßm ^Λ ratio to the knives 11 are arranged at a distance _k

- so that when the gear k6, h & on the hub 28 for

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Adjustment purposes is rotated, a minimal impact on the Tooth entry between gear sections 46 and 48 and * the gear 57 is present, in particular on the PuBkt when the knife 11 is in engagement with the web W for training the perforations come.

Although the drive device shown in the drawing is mounted on the shaft which carries a cylinder with two diametrically opposed perforation knives, it is understood that the device can also be used with a cylinder having a single knife in which the device is included the hub 28 and the adjustable gear section 46 are mounted on the shaft which carries the platen or impression cylinder. However, it was found that. it is desirable to achieve good results, that the eccentric V _e rsetzung the axis 33 and the axis of the shaft is aligned with the knife "and further that the counter-pressure cylinder |

twice the size of the cylinder that has the single Knife carries.

Although the embodiment of the device described above While a preferred embodiment of the invention is shown, it should be understood that the invention is not limited to this Device design is limited and within the scope of the inventive concept numerous changes are possible.

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Claims (1)

Pat ent an s ρ r ü c h e 1.) Guideline for execution; successive work processes in ' predetermined intervals along the length of a continuously moving material web with two parallel, spaced shafts, the two cylinders wear, between which the web is guided, wherein on one of the Zy] inder an arrangement of elements is attached, which the Operations on the web carries out j characterized by a drive device which has an exactly uniform distance between successive operations the track adheres, consisting of a gear with a number of teeth, a device that the gear on one of the Holds shafts so that the pitch axis of the gear teeth is movable relative to the axis of the shaft, a device for driving the gear in timed «ratio for moving the track and a device for adjusting the pitch circle axis of the gear teeth relative to the shaft axis, whereby a precise setting of the toothing on the wheel to the element arrangement and the shaft axis ?.) Device according to claim 1, characterized by a device which holds the toothed wheel on one head in such a way that it can lead a relative rotation in Beztf * on the shaft a £ an axis from-V which is offset from the axis of the shaft is, and by a device for triple pitching of the gear 909887/0184 BATH ORIGINAL ~ ^1? " the offset axis relative to the shaft in order to allow the precise setting of the toothing relative to the element arrangement and to enable the shaft. 3.) Device according to 'claim 2, characterized in that ^J that the elements '. "■ - ■■"' arrangement contains two diametrically opposed elements, which are attached to one of the cylinders ". k.) Device according to claim 3 »characterized by a device for adjusting the gear wheel on the shaft such that a plane delimited by the axes runs at an acute angle .1U of a plane that passes through the two Elements on the cylinder 'is limited to allow an error correction in both directions' with a minimum relative increase between the gear and the shaft sit * 5) ßeiät after Insprncii 3> characterized in that the elements, T-7ei diametrically opposed to each other comprise the -Of successive "healings of animal perf ations on the 'path to facilitate zigzag splitting of the web, tind that the adjustment device for the gear includes a device which enables precise alignment of the Kesser-limited »-plane with the teeth on the gearwheel enables, of the kind, that the device generates a path that is exactly in the Perforations lying apart from one another to form a Has stack of folds, the vertically oriented, own folded hands. ADORIGiNAU ^ ¹⁸ '~ 6.) Device after. Claim 2, characterized by a hub that on the part is fixed for rotation with this and a cylindrical Has surface with an axis offset from the axis of the shaft, the gear wheel being a cylindrical one Includes bore having an axis which is offset from the axis of the pitch circle of the gear by an amount that of the offset Axis corresponds to the surface, and by means of a device that rotates the gear on the surface of the hub for adjustment purposes holds. 7.) Apparatus according to claim 6, characterized in that the gear is formed in ZTirei interconnected sections, and that. a device is provided by means of which the sections in relation to each other on the hub for adjustment purposes are rotatable to the dead gear between the gear and the To keep the drive device at a minimum value. BADORiGINAt 909887 / Ü184