Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H20/00—Advancing webs
  • B65H20/02—Advancing webs by friction roller
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2404/00—Parts for transporting or guiding the handled material
  • B65H2404/10—Rollers
  • B65H2404/13—Details of longitudinal profile
  • B65H2404/132—Details of longitudinal profile arrangement of segments along axis
  • B65H2404/1321—Segments juxtaposed along axis
  • B65H2404/13211—Segments juxtaposed along axis and interconnected by gearing, e.g. differential gearing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2404/00—Parts for transporting or guiding the handled material
  • B65H2404/10—Rollers
  • B65H2404/13—Details of longitudinal profile
  • B65H2404/132—Details of longitudinal profile arrangement of segments along axis
  • B65H2404/1321—Segments juxtaposed along axis
  • B65H2404/13212—Segments juxtaposed along axis and driven independently

Definitions

• the present invention relates to a device for processing form webs by controlled advancement and cutting of form webs; such devices are e.g. known from German utility model G 85 04 658 (1985) and from EP-A-0 156 775. Devices of this type are used in particular for the automated processing of continuous forms, i.e. used for the web separation and the merging of the sections belonging together and usually also for inserting.
• EP-A-0 510 324 also relates to the processing of continuous forms.
• the webs are transported with the aid of belts which abut and circulate around them.
• EP-A-0 556 640 which describes a so-called capstan roller for thermal printers, belongs to the technological background.
• the roller for the paper to be printed consists of three segments which are connected to each other via a differential drive in order to adjust the average speed of the two end segments to the speed of the middle segment.
• the form webs which are advanced continuously or discontinuously or intermittently, are cut into individual sections of predetermined length transverse to the working direction.
• the feed takes place by means of so-called tractors, i.e. Spiked wheels or spiked tapes, the spines of which engage in the usual perforations on one or both sides of the form web.
• the feed can be controlled mechanically or electrically or electronically and for example electro-optically, e.g. through a program and / or through form markings and according to the respective requirements for the form length.
• the object of the invention is to specify a device which fulfills these requirements, so that paper webs without edge paper strips can be used, no waste arises from separated edge strips and no facilities for lateral trimming of the form webs or the forms formed from them are required
• the object of the invention defined above can be achieved in that the form web is guided on a driven roller to achieve a sufficiently accurate and directional feed, which is provided with at least one pressure device, for example at least one adjacent but not driven follower. Ferrolle or another equivalent device cooperates and has two parts that are connected by a differential gear to compensate for irregularities in the feed, such as may result from contamination or other side effects of a fast and continuous operation of the device
• a first general and preferred embodiment of the invention can be provided on the continuous main axis, which extends over the working width of the device (ie over the width of the web being processed) and is only connected on one side to a drive for rotating the axis , At least one pair of sleeves can be arranged, which is rotatable and arranged essentially symmetrically with respect to the longitudinal center line of the associated form path, the sleeves adjacent to the longitudinal center line being connected via a differential gear.
• the differential gear has two bevel gears, each of which is torsionally rigid with those on the longitudinal center line - Adjacent sleeves of the at least one pair of sleeves are connected, the operative connection of these bevel gears takes place via two differential bevel gears, which are freely rotatable about a common axis, which is arranged perpendicular to the main axis, for example in a corresponding transverse bore of the main axis t
• the differential gear according to the invention has an effect analogous to that of the known differential gear on the driven wheels of a car which is traveling through a curve, as a result of which the driving speed of the wheels adapts to the different radii of the curve traversed by each wheel.Only when driving straight - here with exact straight running the respective form web - both sleeves are driven at exactly the same speed.
• the differential gear used according to the invention between the adjacent sleeves on the main axis has the effect that, in the event of a lateral deviation from the normal straight running direction of the form web, the difference is automatically compensated and corrected by the differential gear
• the invention therefore relates to one
• the invention relates to a method for operating a device according to the invention with the features specified in claims 8 and 9
• the invention relates to a method for processing form webs by continuously or intermittently feeding and cutting at least two form webs with the features specified in claim 10
• the differential gear is a mechanical gear known per se, which has two drive bevel gears and two differential bevel gears, each of the drive bevel gears is connected in a torsionally rigid manner to one of the sleeves; the two differential bevel gears are arranged rotatably about a transverse axis which is connected to the main axis and, for example, is guided through it, each of the drive bevel gears being in engagement with the two differential bevel gears
• the drive and / or the compensation bevel gears are designed according to a preferred embodiment as toothed bevel gears, preferably self-lubricating, ie at least one of the interlocking bevel gears or toothed bevel gears consists at least on the outside of a self-lubricating polymer, such as polyamide, polyacetal, Polyester
• a self-lubricating polymer such as polyamide, polyacetal, Polyester
• the friction surfaces ie the surface coming into contact with the associated form web, of the sleeves, which are connected in motion by the differential gear, with an abrasion-resistant elastomer, in particular a rubber-elastic material, for example synthetic or natural elastomer, such as rubber, polyurethane, polyisoprene, or the like , which typically has a Shore hardness A in the range of 80-100, typically 90-95
• an abrasion-resistant elastomer in particular a rubber-elastic material, for example synthetic or natural elastomer, such as rubber, polyurethane, polyisoprene, or the like , which typically has a Shore hardness A in the range of 80-100, typically 90-95
• the friction effect of the sleeve surface can also be achieved by the surface quality or surface structuring, e.g. by surface roughness and / or pattern-like or statistically distributed profiles.
• surfaces or surface areas made of abrasion-resistant materials can also be used, including metal, ceramic, glass and hard materials (Sintered metal, metal carbide, nitride coatings, diamond, boron nitride), for example in the form of embedding sufficiently fine grains from such hard materials in a layer of metallic or non-metallic binder
• At least two opposing contact points for contacting the two side edges of the form web are used to guide the form web in the longitudinal direction.
• pairs of contact points are in the working direction of the device, i.e. the running direction of the webs, at least a distance apart from one another by the working width of the device, namely in front of the associated driven roller. It goes without saying that these contact points or contact point pairs can be positioned, be it to adapt to different form widths or to fine-tune the form insertion
• the invention also relates to a method for operating the new device with a cyclical feed of the form web, in this case an acceleration phase, a movement phase and a braking phase are assigned to each feed cycle of the form web, the acceleration phase is triggered by a signal corresponding to the desired form length and the regulation of the The form web is advanced at a point determined by the length of the form
• the form web has in a manner known per se, for example markings generated by printing, the optical reading of which triggers the control signal corresponding to the desired form length; the movement is thereby known by a Electronic control system controls that compares the actual value of the feed trigger point with its setpoint and uses the difference to control the drive
• FIG. 1 shows a schematic illustration of a device according to the invention with a first and an optional second photomular web
• FIG. 2 shows a semi-schematic sectional view of the driven roller of a device according to the invention
• FIG. 2a shows an enlarged view of the differential gear of the roller from FIG. 2
• Figure 3 shows the scheme of a feed stroke
• Figure 4 is a schematic plan view of a guide with a form web and the associated driven roller
• the device 1 shown schematically in FIG. 1 has a first guide 12 for the form tracks B 1 and an optional (broken line) second guide 14 for a second form track B 2.
• the number of guide tracks is only due to the structural conditions and the number of form tracks to be processed limited In an analogous manner (not shown), three or more form webs could also be merged if desired, provided this is spatially possible in the given case.
• the number of webs processed simultaneously with a device according to the invention is not considered critical and is within the professional discretion
• the guides can be arranged convergingly one above the other in a manner known per se. If more than one roller (and simultaneous processing of more than one form web) is used, it is not essential whether the guides are each horizontal enclose an angle or one of the guides runs approximately horizontally. When using a single form web, the guide 12 can be arranged horizontally or at an angle to the horizontal. The size of this angle is in turn within the range of professional judgment
• the form web B 1 and any further form web that may be present are fed to the device from a source (not shown), for example a magazine or a long separating device for a double-sided printed form web Leadership is shown)
• Each form web runs between the associated driven roller 182 or 184 and the pressure device attached to it under slight pressure of typically 50-500 g, for example the non-driven contact or idler rollers 192 or 194 or similarly acting pressure devices, to the cross cutting device 11.
• the cross cutting device 11 which can be designed, for example, in a manner known per se as a "guillotine" with a cutting bar or knife and one or two cutting edges, as a rotating knife or the like.
• several contact rollers can also be used for each roller and / or through them
• Equivalent or similarly acting devices for example adjacent springs, brackets or the like, are replaced or effectively supplemented
• the roller 182 or 184 is connected to an associated drive 162 or 164, for example an electric motor, the activity of which is regulated by a controller 17 in order to guide the at least one form web to the cross-cutting device 11
• the construction of the driven roller 182 is explained in FIG. 2 on the basis of a semi-schematic sectional illustration.
• the roller has a one-piece and continuous main axis 20 made of a rigid material, typically steel, aluminum or the like, which can be rotated in the bearings 204, 205 at both ends 201, 202 out and on one side, here eg the end 201, is connected to a drive motor, not shown
• each sleeve typically consists of a rigid material, such as steel, aluminum or duroplastic, and is provided with a friction lining 219, 229, eg from an elastic polyurethane (eg Vukollan® from Bayer AG) or from a coating of fine-grained hard material in a suitable matrix material
• the corresponding pressure roller 29a, 29b bears against each sleeve in the region of its friction lining 219, 229 in order to press the form web against the friction lining sufficiently that the form web (not shown in FIG. 2) is actuated when the (not shown in FIG. 2) Drive is transported practically without slippage
• the two sleeves 21, 22 are connected to one another in the area of the center of the main axis 20 by the differential gear 24, as shown enlarged in FIG. 2a.
• the differential gear 24 consists of two drive bevel gears 21 1, 221, which are designed as bevel gears and are each rigid are connected to the associated sleeve 21, 22.
• the operative connection of the drive bevel gears 21 1, 221 or the sleeves 21, 22 rigidly connected to them is effected by z ei also bevel gears 261, 262, which are freely rotatable about the auxiliary axis 28 and are engaged with the drive bevel gears 21 1, 221
• the auxiliary axis 28 lies in a transverse bore of the main axis 20 and is carried along by its rotation, ie rotates in the radial direction.
• the auxiliary axis 28 can be axially rotatable, but this is normally of no practical importance. It is essential that the differential gear 24 only comes into effect, if the sleeves 21, 22 abutting the form web are not equally involved in the transport.
• a preferred control or regulation of the drive of the main axis 20 is shown in the diagram of FIG. 3.
• the electric motor causing the drive is controlled in such a way that the initially stationary form web is first accelerated during a start-up phase Ba ..-.- and then guided through the movement or feed phase B mov until the start of the braking phase Bb r at a practically constant speed.
• To regulate the drive according to a preferred embodiment of the Operation of the device according to the invention is based on the transition from phase B mo to phase B bc and the braking process is dimensioned in such a way that the form web is positioned precisely on the cross-separating device in the position controlled, for example, in the usual manner by printed markings
• each sequential-selective feed cycle of the form web is generated by a signal corresponding to the desired form length and triggered by markings on the form web and the regulation of the feed of the form web is carried out at the draw point determined by the form length can be triggered in a known manner, for example by optically reading the marking on the form path.
• the movement is controlled by control electronics, which compares the actual value of the position of the trigger point with its setpoint and uses the difference to control the drive
• FIG. 4 shows a broken-off part of the guide 42 of a device according to the invention with the form web 43 lying thereon, which has a center line M and a width B.
• the edge-side guides 45a, 45b are arranged at a distance L in the running direction (arrow A) in front of the driven roller 44, the distance L preferably being at least as great as the width B of the web 43.
• the pressure rollers 49a, 49b are symmetrical to the Center line M of the form web is arranged and print the form web in the area of the friction lining against the roller, which is connected via the axis 40 to the drive 46 and controls or regulates the actuation of the roller in the manner set out above
• the exemplary embodiment set out above serves to explain and not to limit the invention and generally provides a device for processing at least one form web by continuous or intermittent feeding and cutting of the at least one form web; the device has at least one guide converging towards a transverse separating device for the at least one form web.
• the device has means for controlling the feed of the form web and at least one driven roller, which extends transversely to the working direction over the working width of the device and with at least one ner pressure device, for example one or two non-driven idler rollers, cooperates,
• the driven roller has a continuous main axis, which is only connected on one side with a drive for rotation of the continuous main axis, this main axis carries at least one pair of cylindrical sleeves rotatable about the main axis , which are in operative connection with each other via a mechanical or differential differential

Landscapes

• Advancing Webs (AREA)
• Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
• Making Paper Articles (AREA)
• Fats And Perfumes (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Machines For Laying And Maintaining Railways (AREA)
• Replacement Of Web Rolls (AREA)
• Delivering By Means Of Belts And Rollers (AREA)
• Gears, Cams (AREA)

Priority Applications (1)

Applications Claiming Priority (6)

Publications (2)

Family

ID=25689949

Family Applications (1)

Country Status (9)

Families Citing this family (8)

Family Cites Families (6)

• 2000
  • 2000-05-09 ES ES00920320T patent/ES2204554T3/es not_active Expired - Lifetime
  • 2000-05-09 DE DE50003115T patent/DE50003115D1/de not_active Expired - Lifetime
  • 2000-05-09 JP JP2000618190A patent/JP2002544097A/ja active Pending
  • 2000-05-09 BR BR0010445-0A patent/BR0010445A/pt not_active IP Right Cessation
  • 2000-05-09 EP EP00920320A patent/EP1177149B1/fr not_active Expired - Lifetime
  • 2000-05-09 AU AU40968/00A patent/AU4096800A/en not_active Abandoned
  • 2000-05-09 WO PCT/CH2000/000256 patent/WO2000069764A1/fr active IP Right Grant
  • 2000-05-09 AT AT00920320T patent/ATE246137T1/de active
  • 2000-05-09 CA CA002373321A patent/CA2373321C/fr not_active Expired - Fee Related

Non-Patent Citations (1)

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