EP0003984B1 - Verfahren zum Ausstanzen von Zuschnitten aus einer Bahn und Vorrichtung zu dessen Durchführung - Google Patents

Verfahren zum Ausstanzen von Zuschnitten aus einer Bahn und Vorrichtung zu dessen Durchführung Download PDF

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Publication number
EP0003984B1
EP0003984B1 EP79100470A EP79100470A EP0003984B1 EP 0003984 B1 EP0003984 B1 EP 0003984B1 EP 79100470 A EP79100470 A EP 79100470A EP 79100470 A EP79100470 A EP 79100470A EP 0003984 B1 EP0003984 B1 EP 0003984B1
Authority
EP
European Patent Office
Prior art keywords
web
blade
roller
rollers
punching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79100470A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003984A2 (de
EP0003984A3 (en
Inventor
Gerhard Tiemann
Knut Kammann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werner Kammann Maschinenfabrik GmbH and Co KG
Original Assignee
Werner Kammann Maschinenfabrik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werner Kammann Maschinenfabrik GmbH and Co KG filed Critical Werner Kammann Maschinenfabrik GmbH and Co KG
Publication of EP0003984A2 publication Critical patent/EP0003984A2/de
Publication of EP0003984A3 publication Critical patent/EP0003984A3/xx
Application granted granted Critical
Publication of EP0003984B1 publication Critical patent/EP0003984B1/de
Expired legal-status Critical Current

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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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B26F1/42—Cutting-out; Stamping-out using a press, e.g. of the ram type having a pressure roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/82—Forming or attaching windows
    • B31B50/83—Cutting window openings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0333—Scoring
    • Y10T83/0341—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0515—During movement of work past flying cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4757—Tool carrier shuttles rectilinearly parallel to direction of work feed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4838—With anvil backup
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/788—Tool pair comprises rotatable anvil and fixed-type tool
    • Y10T83/793—Anvil has motion in addition to rotation [i.e., traveling anvil]

Definitions

  • the invention relates to a method for punching blanks from a path which is moved uniformly in their longitudinal direction and is passed between a punching knife and an abutment consisting of at least one rotatable roller, and to a device suitable for carrying out this method.
  • Such methods and devices are such.
  • the web can first be printed.
  • the individual - e.g. B. corresponding to the printed images - blanks are punched out of the web, which generally consists of two layers.
  • the advantage of these cylindrical punch knives is their great performance.
  • their production is relatively expensive, so that they can often not be used in the production of short runs for cost reasons.
  • flat punching knives that can be relatively simple and therefore inexpensive.
  • a low throughput is unavoidable.
  • DE-B 1 204 060 discloses a punching device for web-like material, in which two punching knives act alternately on the web. It is possible to punch out the individual blanks without a gap. However, the web can only be advanced intermittently. In addition, the structure of this known device is extremely complicated.
  • AU-B 48 032/64 discloses a punching device for making perforations on continuously running webs. This device consists of a pivotable plate which carries the punching tool and a cooperating stationary abutment roller arranged on the side of the web facing away from the punching plate. The path over which the punching knife is moved synchronously in the running direction of the web is as long as the length of the blank. The punch knife is then lifted off the web and moved back to its starting position. It is not possible to punch out the individual blanks without spacing.
  • the invention is based, inter alia, on the object of designing the method and device of the type described at the outset in such a way that punching out blanks from continuously moving webs with a high throughput is possible even when using inexpensive stamping tools.
  • the aim is that there are no restrictions on the size of the distance between the individual blanks, although the use of rotating punching knives is dispensed with.
  • So z. B. there is the possibility of punching the blanks out of the web without spacing or even overlapping one another.
  • the punching tool should be exchangeable quickly, so that the time required for converting the machine, for example when changing from one label shape to another label shape, remains low.
  • the length and shape of the blank all the possibilities should exist, which are given in known methods and devices.
  • special measures should be applicable without difficulty, which make it possible to separate the web from the punching tool after the punching process.
  • the invention proposes that the punch knife be lowered onto the web and, during the punching process in the direction of travel of the web, be moved synchronously with it over a distance which is less than the length of the blank, from an initial position into an end position, whereupon the punch knife is lifted from the web and moved back to its starting position and the abutment consisting of at least one roller is displaced during the punching process against the direction of movement of the web or the punch knife.
  • the punch knife is lowered onto the web and, during the punching process in the direction of travel of the web, is moved synchronously with it over a distance which is less than the length of the blank, from an initial position into an end position, whereupon the punch knife is moved from the web is lifted off and moved back to its starting position, and the abutment consists of at least two stationary rollers and, when the punching knife is lowered onto the rollers, corresponding partial cuts are made on the web, which add up to the finished die cut.
  • the strokes and speeds of the punch knife and the abutment roller add up.
  • the time required to carry out the punching process can additionally be reduced in that two or more abutment rollers, which are arranged at a short distance from one another, interact with the punching knife. In this case, when the punch knife is lowered onto the abutment rollers, several partial cuts are made on the web, which are complemented by the opposite movements of the parts to the finished punch cut.
  • the method can be carried out in such a way that the web section entering the punching machine and the web section running out of the punching machine and the web section running out of the punching machine are parallel to one another and at an acute angle, at least in the region within which the abutment roller is displaced during the punching stroke run down to the substantially horizontally arranged punching knife and the punching tool consisting of punching knife and abutment roller and a deflection roller is moved at least during the punching stroke parallel to the sections of the web running at an acute angle to the plane of the punching knife.
  • This procedure will be advantageous when it comes down to guiding the web away from the generally flat punch knife at an acute angle immediately after the punching process, so that a separation between the punch knife and the web takes place as quickly as possible, which improves the quality of the separating cut and, in particular, that The formation of clean cut edges on the blanks favors.
  • Such an inclined path of the web from the punching knife and the abutment roller would, however, result in a change in the web speed on the punching knife if the latter were moved in the horizontal plane during the punching process, so that the synchronism required between the movement of the punching knife on the one hand and the movement of the On the other hand, web would not be guaranteed.
  • the invention takes this into account by the method described above, in which the result is that the movement of the abutment roller and thus the entire punching tool takes place parallel to the course of the web, the latter taking between the generally roller-shaped or roller-shaped guide elements that the web run in front of and behind the punching tool.
  • the angle at which the two aforementioned web sections run is advantageously between 0 and 20 ° with respect to the horizontal or the punching knife.
  • the above-described method can be carried out using a device which has a liftable and lowerable punching knife and an abutment which is arranged on the side of the web facing away from the web and consists of at least one rotatable roller and is characterized in that the punching knife has an adjustable stroke. and movable and the abutment consisting of at least one roller is arranged to be displaceable in the opposite direction to the punching knife during the punching stroke.
  • the abutment to consist of a plurality of rollers which are arranged next to one another at small intervals and can be rotated and stationary, the area within which the rollers are arranged being at least as large as the dimension of at least one blank.
  • the invention also provides for the possibility that the abutment roller (s) can be raised and lowered.
  • abutment roller possibly also one or more additional deflection rollers, since otherwise the web would have to transmit the forces which are required to set these rollers in rotation.
  • the invention therefore provides the possibility that abutment roller and / or deflection roller (s) during the punching process, depending on the speed at which they can be displaced relative to the web-shaped material, their rotational movement can be driven.
  • One possibility is to derive the rotary movement of the abutment roller during the punching process from the stroke movement of the punch knife.
  • those parts of the punching knife that - based on the length of the web - limit the blank back and front, run perpendicular to the web and parallel to the longitudinal axis of the abutment roller (s) if the longitudinal axis of the blank runs parallel to the longitudinal axis of the web and the longitudinal axis of the abutment roller (s) is perpendicular to the longitudinal axis of the web.
  • Such a configuration is unsuitable, since it has the consequence that the front and rear boundary-forming knife parts of the punching knife run simultaneously over the entire longitudinal extent extending transversely to the web onto the lateral surface of the abutment roller. This results in high stress on these knife parts.
  • the quality of the cut at these points can also suffer. It is more advantageous if, as in the case of the knife parts arranged exactly or approximately parallel to the longitudinal course of the web, there is a more or less selective contact between the knife part and the abutment roller. For this reason, the invention provides that the longitudinal axis (s) of the abutment roller (s) with the perpendicular to the punching knife parallel to the running direction of the web includes or include an acute angle, which can be, for example, 5-10 °. Another possibility is that the longitudinal axis of the blank delimited by the punching knife encloses an acute angle with the longitudinal axis of the web. This means that the punching knife is pivoted somewhat relative to the web, 5 or 10 ° being sufficient to achieve the desired effect.
  • a central drive can be provided for all movable parts of the device.
  • the running speed of the web can be adapted to the speed of the punching knife by means of an adjustable gear which is engaged in the drive transmission for the web. It is also possible that the means for transmitting the drive to the slide for the punching knife and / or the slide for the abutment roller (s) and any deflection rollers, if any, are adjustable and / or exchangeable.
  • the normal procedure is to first print a two-layer web 25 on one side.
  • the individual labels are then separated out from that of the layers 93, 94 which adhere to one another by adhesive and carry the print.
  • the labels 95 cut in this way initially adhere to the layer 93, which serves as a carrier web. They will later be removed from the carrier layer 93 in the usual manner.
  • the residual tape resulting from the removal of the labels 95 and lifting of the two layers 93 and 94 from one another is derived in a suitable manner (see FIG. 5).
  • the individual labels 95 are separated from the layer 94 by means of a punch knife 15 which is carried by a holder 16.
  • the course of the cutting edges 23, 29 of the punching knife 15 corresponds to the outline of the finished labels.
  • the punching knife 15 interacts with an abutment roller 17, which is assigned a deflection roller 18.
  • Abutment roller 17 and deflection roller 18 are carried by a carriage 13 (see. Fig. 1 and 2 and Fig. 4a to 4f), which on two spars 12, the is inclined at an angle of about 15 ° with respect to the horizontal, is guided so that it can be pushed back and forth.
  • the spars 12 are attached to the frame of the punching device.
  • the carriage 13 is provided with eyes or the like 14, which encompass the spars.
  • This first slide 13 is provided with two horizontal bars 19, which are arranged within a cutout 20 in the first slide 13.
  • other guide means and arrangements thereof are also possible.
  • a second carriage 21 is guided to move back and forth, which carries the holder 16 of the punching knife 15 with the interposition of a cylinder-piston arrangement 22.
  • the arrangement is such that a support element 24 is provided, on which the holder 16 is attached in a height-adjustable manner.
  • the roller 17 serving as an abutment roller is located directly below the punching knife 15, which in its lower end position cuts into the upper layer 94 of the web 25 in the region of the upper vertex of the roller 17.
  • the drive of the punching device is derived from a main drive shaft 26 (FIGS. 1 and 2) which is driven by a motor 28 via a gear 27.
  • a shaft 30 is fastened to the shaft 26 and is provided on its side facing the motor 28 with a cam 32, with which a cam roller, a cam or the like 34 cooperates, which at one end of one in the frame 11 36 mounted double-armed lever 38 is attached.
  • the second carriage 21 is provided with a vertical slot 40 into which a cam roller 44 or the like carried by the second arm 42 of the lever 38 engages. A pivoting of the lever 38 caused by the curve 32 thus results in a to-and-fro movement of the second slide 21.
  • the course of the curve 32 is chosen such that the second carriage 21 and thus the punch knife 15 move at a constant speed during the punching process, provided that the speed at which the web 25 is moved matches that of the punch knife 15 is adjusted during the punch stroke.
  • the cam or the like. 44 is attached to the arm 42 in an adjustable manner in the longitudinal direction. With increasing distance of the cam roller 44 from the fulcrum 36, the stroke and speed of the second slide 21 and thus of the punching knife 15 increase. With the size of the stroke, the extent of the blank to be removed in the course of a stroke can also be increased in the longitudinal direction of the web 25.
  • the first slide 13 is driven by an adjustable crank arm 46, which is rotatably mounted on the disk 30, but on the side facing away from the curve 32, and carries a curve roller or the like 50 at its free end, which engages in a in the main slide 13 located slot 52 attacks.
  • the latter runs perpendicular to the spars 12 and thus perpendicular to the path which the carriage 13 travels in the course of its back and forth movement.
  • the effective length of the crank arm between the bearing point 48 and the cam roller 50 can be adjusted, specifically by means of the corresponding adjustability of the bearing point 48 on the disk 30 which is continuously rotatable by the drive shaft 26.
  • a gear 56 is fastened, which drives the drive gear 58 of a variable transmission 59 via a chain or the like.
  • the output shaft 64 of the variable gear 59 via the gear 65, chains or the like.
  • 66, 70, 71 and associated gears 72, 74 and 76 a supply roll 78 from which the web 25 to be treated is unwound, a roll 80 on which the carrier web 93 with the blanks 95 adhering thereto is wound and drives a drive roller 82 by means of which carrier web 93 and thus web 25 are pulled out of the punching tool will.
  • the remaining strip 98 remaining after the cuts 95 have been cut out of the layer 94 is discharged via a roller 99, which can also be driven by suitable transmission means, for example, by the shaft 84.
  • the separation between the carrier web 93 and the remaining web 98 takes place by pulling off the remaining web 98 from the layer 93 and the labels 95 remaining thereon.
  • a roller 97 is provided to fix the area in which this separation takes place.
  • gear 85 On the shaft 84, on the roller 82 and gear 76 are attached, another gear is fixed, which is a flexible transmission element 86, for. B. drives a chain that engages with gears 85, 87 and 89.
  • the gears 87 and 89 are firmly connected to the shafts supporting the abutment roller 17 and the deflection roller 18, respectively.
  • the gear 85 is fixedly connected to a shaft carrying a drive roller 88, so that the chain or the like 86 drives the drive roller 88 as well as the abutment roller 17 and the deflection roller 18.
  • a relative back and forth movement of the two rollers 17 and 18 in the direction of the arrows 67 and 69 thus inevitably has an adaptation of the circumferential speed of the two rollers to the relative speed at which the web 25 comes on during the back and forth movement of the rollers 17 and 18 the lateral surfaces of the two rollers moves, as a result.
  • the arrangement will be such that a slip clutch, not shown in the drawing, is arranged between the gear wheels 72 and 74 on the one hand and the two rollers 78 and 80 on the other hand, because the peripheral speeds of the rollers change as the winding or unwinding takes place 78 and 80 an exact setting of the respectively desired web speed by the drives assigned to these two rollers anyway not possible.
  • the speed of the web 25 between the two rollers 78 and 80 which must be adapted to the speed at which the punching knife 15 moves during the punching stroke, is rather determined by the rollers 17, 18, 82 and 88.
  • 4a to 4f the sequence of the punching process during a work cycle is shown in the diagram.
  • the parts belonging to the punching unit that is to say holder 16 with punching knife 15, abutment roller 17 and reversing roller 18 and, moreover, first carriage 13 and the web 25 are shown in the diagram.
  • reference lines A to D are assigned to the punching tool at equally large intervals, which better identify the extent of the movements of the parts of the punching machine, that is to say the carriage 13 with rollers 17 and 18 on the one hand and the holder 16 with punching knife 15 on the other hand do.
  • a reference scale 63 is assigned to the web 25 running from the abutment roller 17 in order to make the movement of the web 25 recognizable.
  • Fig.4a shows the position of the parts at the beginning of the work cycle.
  • the punching knife 15 is lowered onto the web 25 in the region of the upper vertex of the abutment roller 17.
  • the carriage 13 with the abutment roller and reversing roller 18 assumes the left end position.
  • the carriage 13 is moved in the direction of arrow 67 and the holder 16 with punch knife 15 simultaneously in the direction of arrow 62, that is to the left, with both movements overlapping with respect to the punch knife 15, since the latter over the second carriage 21 is guided on the slide 13.
  • the length of a blank in the longitudinal direction of the web 25 should correspond to the length of the scale 63 (0-4).
  • the limits of the blank cut out in the penultimate work cycle are identified by the two points 81 and 83.
  • the blank cut out in the immediately preceding working cycle is located in the region between point 83 and the upper vertex of the abutment roller 17 and corresponds to the distance X in FIG. 4a.
  • the abutment roller 17 and the deflecting roller 18 on the one hand and the punching knife 15 on the other hand are displaced in opposite directions, the region of the web 25 which wraps around part of the circumference of the roller 17 being rolled on the punching knife 15. Due to the relatively opposite movements of the parts forming the punch in the direction of arrows 60 and 62, in particular the movement of the abutment roller 17 against the direction of travel of the web 25, it is achieved that the punch knife 15 and the abutment roller 17 by the length of the blank or the distance 0 to 4 the distance R corresponding to the scale 63 can be moved relative to one another before the web 25 has continued to run about half the length of the blank. A comparison of FIGS.
  • the abutment roller 17 has moved from the starting position A (FIG. 4a) to the intermediate position B (FIG. 4b) in the course of the first phase of the stamping process, both parts 17 and 18 being moved counter to the direction of travel 68.
  • the punching knife 15 is moved in the opposite direction by a distance which corresponds to approximately half its total stroke, so that the longitudinal section Y separated from the web during this working phase, which lies between point 79, which is in the position according to FIG. 4a was the upper vertex of the abutment roller 17, and now, d. H. in the position of the parts according to FIG.
  • the point of the web lying on the upper vertex of the roller 17, is greater than the distance by which the web had been advanced in the direction of arrow 68 during this period.
  • This last-mentioned distance corresponds to the distance that the point 83 of the path 25 having a triangular marking has traveled from the position according to FIG. 4a to the position according to FIG. 4b.
  • the section Y which runs in the longitudinal direction of the web 25 and is cut out during the first half of the punching stroke, is approximately twice as long as the distance 0-1 of the scale 63 by which the web 25 has advanced in the same time.
  • Fig. 4c shows the position of the parts at the end of the punch stroke.
  • Abutment roller 17 and punch knife 15 have each been shifted again approximately by the distance that lies between the working positions according to FIGS. 4a and 4b.
  • the abutment roller 17, which rotates in the direction of arrow 73 during the punching stroke, is located on the line C.
  • the punching knife 15 assumes its left end position.
  • the longitudinal section separated out in the course of this punching stroke is designated Z and corresponds to the distance 0-4 on the scale 63.
  • the path 25 is only one distance in the direction of arrow 68 during this entire punching stroke moved forward that the point 83 marked with the triangle is now approximately at the mark 2 of the scale 63.
  • FIG. 4d shows the parts in the position corresponding to FIG. 4c, but the punching knife 15 is now lifted off the web 25 in the direction of the arrow 75.
  • the slide 13 is then moved back in the direction of the arrow 69.
  • the slide 21 moves back relative to the slide 13.
  • FIG. 4e shows an intermediate position in the course of this stroke of the mutually interacting parts of the punch, opposite the punch stroke.
  • the speed at which the carriage 13 is moved back into its starting position in the direction of the arrow 69 is greater than the speed of the web 25 when the blanks are cut out without spacing.
  • the resultant advance of the abutment roller 17 has the consequence that if the parts in Fig.4f have reached the position shown at the end of the return stroke, the end of the blank which had just been cut out and which is indicated in FIGS. 4b to 4f by the point 77, which is in the direction of rotation 73 of the abutment roller 17 shortly before top vertex of the roller 17 is located.
  • the time required to move the web 25 to the point 77 at the apex of the roller 17 is used to lower the punch knife 15 onto the web 25.
  • Length and speed of the strokes carried out by the two slides 13 and 21 depend on the setting of the two cam rollers, cams or the like. 44 and 50 relative to the associated recesses 40 and 52.
  • the length of the punching knife 15 and abutment roller 17 during the punching process Exerted strokes determine the length of the resulting total stroke R (Fig.4a) and thus the dimension of the blank in the longitudinal direction of the web 25. It follows that when changing the length of the blank at least the stroke of the punching knife 15 or the slide 21 correspondingly must be adjusted, which in turn results in a change in the speed of the punching knife during the punching process. Since the web 25 rolls on the punching knife during the punching process, the web speed must therefore be adapted to that of the punching knife.
  • variable gear 59 the drive wheel 58 of which is driven at a constant speed, but whose output shaft 64 rotates depending on the gear setting selected in each case.
  • Another possibility of adaptation is to replace curve 32 or the disk 30 carrying it and thus to change the drive conditions of the punching knife 15 and, if applicable, the abutment roller 17 and the deflection roller 18.
  • both options can also be combined.
  • FIGS. 1 to 10 This also applies to the embodiments shown in FIGS. 1 to 10, which differ from that in FIGS. 1 to 6 essentially by the design and / or the movement of the abutment.
  • the abutment roller 17 is assigned two deflection rollers 18, one of which is arranged in the running direction 68 of the web 25, one in front and the other behind the abutment roller. All of the rollers 17 and 18 are carried by the carriage 13. The back and forth movements of the roller 17, 18 on the one hand and the holder 16 with punching knife 15 on the other hand take place in the direction of the arrows 60 and 62, that is to say in the horizontal plane.
  • the bracket 16 is arranged in the usual way up and down.
  • the abutment is also designed as a roller 17.
  • the movement sequence of the punching knife 15 and the abutment roller 17 corresponds to that of the exemplary embodiment according to FIG. 7. This means that both parts can be moved back and forth in the direction of the arrows 60, 62 in the area between the drive or deflection rollers 82, 88.
  • the abutment consists of three abutment rollers 17 arranged next to one another in a plane in the longitudinal direction of the web 25, which are rotatable at least in the direction of the arrow 73, but in contrast to the other exemplary embodiments, stationary between the drive or deflection rollers 82, 88 are arranged.
  • the punch knife 15 is arranged in the usual manner in the direction of arrow 62 during the punching process and on the return stroke in the opposite direction to reciprocate.
  • the length of the area in the stroke direction 62 of the punching knife 15, in which the rollers arranged parallel to one another are provided, will be slightly longer than the length of the largest blank that is to be punched out using this tool.
  • the distances between the abutment rollers 17 can be greater, the greater the stroke of the punching knife 15.
  • the distance between the rollers and thus their number will be chosen so that the distance over which the punch knife 15 is moved synchronously with the web 25 is short enough to bring the punch knife 15 back to the starting position early enough.
  • the arrangement can also be such that the punching knife 15 is formed by three partial punching knives arranged one behind the other in the longitudinal direction of the web 25, each of which cuts a partial blank out of the web 25.
  • One of the rollers 17 can be assigned to each part punching knife.
  • the partial punching knives can be formed simply by providing two transverse cutting edges between the two ends of the punching knife 15 at a distance therefrom and from one another.
  • the course of the cutting of the punching knife 15 is shown for punching out a rectangular blank.
  • the two cutting sections 23 produce the longitudinal boundaries of the blank 95, whereas the cutting sections 29 lying at the front and rear carry out the separating cuts at the boundaries 35 lying at the front and back.
  • the punching knife 15 is arranged on the holder 16 in such a way that its longitudinal axis - and thus also the longitudinal axis of each blank 95 - forms an acute angle with the longitudinal axis of the web 25.
  • Fig. 11 shows that within the space delimited by the cutting sections 23 and 29, an insert 37 made of foam rubber or similar material is arranged, which is easily elastically deformable.
  • the height of this insert corresponds approximately to the height by which the punch knife 15 protrudes relative to the holder 16.
  • This foam rubber insert is slightly compressed between the holder 16 and the repositioning roller 17 or web 25 during the cutting process. As soon as the foam rubber insert 37 has passed the abutment roller, it assumes its original shape again with an increase in volume, the web 25 being pressed off by the punching knife 15.
  • FIG. 12 shows another embodiment, which also serves to cause the front and rear cutting sections 29 of the punching knife 15 to run onto the abutment roller 17 at an acute angle.
  • the abutment roller is pivoted somewhat from the normal position perpendicular to the longitudinal axis of the web 25, so that the longitudinal axis of the abutment roller 17 includes an acute angle with the perpendicular to the direction of the web 25 parallel to the punching knife 15.
  • the cutting elements 29 and 23 delimiting the punching knife 15 can run perpendicularly or parallel to the longitudinal course of the web 25, with the result that less waste is produced.
  • FIG. 13 shows a screen printing machine with three printing stations 201, 202, 203 and a station 204, in which the labels are punched out using a device according to FIGS. 1 to 6.
  • the web 225 to be treated is drawn off from a supply roll 278 and passed through the three printing units 201 to 203 and then through the punching station 204 in a continuous run.
  • the base layer of the double-layered web 225 is wound up on a roll 280 after the separation process.
  • the remaining web 298 remaining after the labels have been removed from the printed layer is rolled up from a supply roll 296.
  • the machine shown in Fig. 13 allows three colors or other coatings to be applied.
  • the individual printing stations are designed as described in connection with FIGS. 1 and 2 with the difference that a screen printing stencil takes the place of the punching knife and a doctor blade 216 is additionally provided.
  • Abutment rollers 217 and deflection rollers 218 of all stations, guide rollers 282 and 288 and, if appropriate, still located between the stations, rollers not shown in the drawing are expediently driven by a common drive, so that the flexible transmission element 86 of FIG. 3 with all gears or the like. , which are assigned to the abutment rollers 217 and the deflection rollers 218 of the printing stations 201 to 203 and the separation station 204, and to the gears of the guide rollers.
  • the only decisive factor here is also that in the areas within which the abutment rollers 217 and deflection rollers 218 of all stations are moved, the flexible transmission element runs parallel to the web 225, as was described in connection with FIG. 3. However, it is also possible to assign a separate flexible transmission element to each station analogous to element 86 in FIG. 3.
  • the separating station 204 could also be connected upstream of the first printing station 201, so that the web-shaped material to be printed consists of a carrier web on which individual blanks that are to be printed adhere.
  • the invention is in no way limited to the use of two-layer webs. Rather, it can be used wherever it is important to punch blanks from uniformly moving webs, regardless of how the punched blanks are treated or transported further after the punching process.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Screen Printers (AREA)
  • Details Of Cutting Devices (AREA)
EP79100470A 1978-03-11 1979-02-19 Verfahren zum Ausstanzen von Zuschnitten aus einer Bahn und Vorrichtung zu dessen Durchführung Expired EP0003984B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782810713 DE2810713A1 (de) 1978-03-11 1978-03-11 Verfahren zum ausstanzen von zuschnitten aus einer bahn und vorrichtung zu dessen durchfuehrung
DE2810713 1978-03-11

Publications (3)

Publication Number Publication Date
EP0003984A2 EP0003984A2 (de) 1979-09-19
EP0003984A3 EP0003984A3 (en) 1979-10-03
EP0003984B1 true EP0003984B1 (de) 1981-10-14

Family

ID=6034230

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Application Number Title Priority Date Filing Date
EP79100470A Expired EP0003984B1 (de) 1978-03-11 1979-02-19 Verfahren zum Ausstanzen von Zuschnitten aus einer Bahn und Vorrichtung zu dessen Durchführung

Country Status (5)

Country Link
US (2) US4245538A (enrdf_load_stackoverflow)
EP (1) EP0003984B1 (enrdf_load_stackoverflow)
JP (1) JPS54128087A (enrdf_load_stackoverflow)
BR (1) BR7901461A (enrdf_load_stackoverflow)
DE (1) DE2810713A1 (enrdf_load_stackoverflow)

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US4494435A (en) * 1983-09-23 1985-01-22 Ned Lindsay Cutting device
JPS61163198U (enrdf_load_stackoverflow) * 1986-03-14 1986-10-09
JPS62246723A (ja) * 1986-04-18 1987-10-27 光洋自動機株式会社 打ち抜きラベル等の製造方法
GB2198073B (en) * 1986-11-28 1990-01-24 Redland Roof Tiles Ltd Improvements in cutting mechanisms
JPH0180072U (enrdf_load_stackoverflow) * 1987-11-17 1989-05-29
JP2552994B2 (ja) * 1992-10-29 1996-11-13 アイセル株式会社 打抜き方法及び打抜き装置
US5440613A (en) * 1992-12-30 1995-08-08 At&T Corp. Architecture for a cellular wireless telecommunication system
US5861077A (en) * 1994-12-21 1999-01-19 Seiko Epson Corporation Separation method for adhesive sheet and its device
JPH08229887A (ja) * 1994-12-27 1996-09-10 Seiko Epson Corp 積層シートのカット方法およびその装置
DE29717843U1 (de) * 1996-10-07 1998-01-08 Seiko Epson Corp., Tokio/Tokyo Druckmedium
DE19813994A1 (de) * 1998-03-28 1999-09-30 Etimark Gmbh Verfahren zum Erzeugen von Ausstanzungen in Etiketten und Vorrichtung zu seiner Durchführung
DE19944273A1 (de) * 1999-09-15 2001-04-05 Alcan Gmbh Verfahren zum Ausstanzen von Ausschnitten aus zumindest einer Materialbahn
DE19958274B4 (de) * 1999-12-03 2006-11-23 Hengstler Gmbh Abschneider für klebende Etiketten
DE10311219A1 (de) * 2003-03-14 2004-09-30 Werner Kammann Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bedrucken einer Bahn
RU2369487C2 (ru) * 2005-11-24 2009-10-10 Самсунг Электроникс Ко., Лтд Устройство и способ сканирования газет
FR2914213B1 (fr) * 2007-04-02 2009-06-05 Forest Line Capdenac Soc Par A Dispositif de separation et d'evacuation des chutes decoupees dans une bande de preimpregne.
WO2008120804A1 (ja) * 2007-04-02 2008-10-09 Seiji Kagawa 直線的易裂性プラスチックフィルム、その製造方法及び装置
US20090074994A1 (en) * 2007-09-14 2009-03-19 Mclean Linda L Kit for Decorating A Car
JP5894532B2 (ja) * 2009-09-28 2016-03-30 テク・インダストリーズ，インコーポレーテッド 共通の刃を備えるダイカット
JP4829364B1 (ja) * 2010-05-25 2011-12-07 トタニ技研工業株式会社 製袋機
WO2015141725A1 (ja) * 2014-03-18 2015-09-24 コニカミノルタ株式会社 パターンカット装置
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Also Published As

Publication number Publication date
US4331055A (en) 1982-05-25
JPS54128087A (en) 1979-10-04
EP0003984A2 (de) 1979-09-19
DE2810713A1 (de) 1979-09-13
EP0003984A3 (en) 1979-10-03
DE2810713C2 (enrdf_load_stackoverflow) 1987-05-27
BR7901461A (pt) 1979-10-09
US4245538A (en) 1981-01-20
JPS6128480B2 (enrdf_load_stackoverflow) 1986-06-30

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