EP0681975B1 - Dispositif de freinage d'éléments en plaque au sein d'une station de réception d'une machine de traitement de tels éléments - Google Patents

Dispositif de freinage d'éléments en plaque au sein d'une station de réception d'une machine de traitement de tels éléments Download PDF

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Publication number
EP0681975B1
EP0681975B1 EP95106871A EP95106871A EP0681975B1 EP 0681975 B1 EP0681975 B1 EP 0681975B1 EP 95106871 A EP95106871 A EP 95106871A EP 95106871 A EP95106871 A EP 95106871A EP 0681975 B1 EP0681975 B1 EP 0681975B1
Authority
EP
European Patent Office
Prior art keywords
brush
ramp
downstream
fact
slanted
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 - Lifetime
Application number
EP95106871A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0681975A1 (fr
Inventor
Jean-Claude Rebeaud
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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 Bobst SA filed Critical Bobst SA
Publication of EP0681975A1 publication Critical patent/EP0681975A1/fr
Application granted granted Critical
Publication of EP0681975B1 publication Critical patent/EP0681975B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H20/00—Advancing webs
    • B65H20/16—Advancing webs by web-gripping means, e.g. grippers, clips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/683—Slowing-down from chain delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/449—Features of movement or transforming movement of handled material
    • B65H2301/4492—Features of movement or transforming movement of handled material braking
    • B65H2301/44921—Features of movement or transforming movement of handled material braking by friction contact with non driven element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B65H2403/513—Cam mechanisms involving elongated cam, i.e. parallel to linear transport path
    • 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
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/56—Flexible surface
    • B65H2404/561—Bristles, brushes
    • 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
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/63—Oscillating, pivoting around an axis parallel to face of material, e.g. diverting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the present invention relates to a device for braking plate elements, such as sheets of paper or cardboard, within a receiving station of a machine for processing such elements.
  • Such a machine usually comprises first of all an introduction station in which a stack of sheets is installed, each sheet being successively removed from the top of the stack to be sent to a margin table.
  • each sheet On this table, each sheet is placed in position against front and side cleats before being gripped at its front edge by a series of clamps mounted along a transverse bar, each end of which is attached to a train of side chains taking the bar, and therefore the sheet, to the following treatment stations.
  • the treatment stations can be a cutting press, the latter being followed by a waste ejection station.
  • These processing stations are followed by a receiving station in which each sheet released by the clamps is jogged by falling on top of a stack accumulating on an output pallet.
  • the sheet is first supported when it arrives in the station by a rear shelf and possibly two side shelves, which then retract to drop it.
  • this sheet weakened by the anterior cut entering the station at high speed, the only braking by deceleration of the front pliers bar risks causing a curl of its rear part which tends to catch up with the front part.
  • This sheet must therefore also be braked by a complementary device acting on its surface.
  • a known braking device having the characteristics of the preamble of claim 1, is composed of a long transverse brush oriented downwards rubbing the sheet against the rear shelf, which keeps it smooth as it passes.
  • This brush must however be regularly lifted to prevent it from being damaged by shocks due to the successive passages of the gripper bars.
  • the brush is mounted on an oblique cross member oriented downstream, as seen relative to the direction of movement of a sheet, a cross member whose two ends are pivotally mounted about an axis located substantially at their upper edge.
  • An elastic means such as one or more spiral springs mounted on the axis or located inside a meshed drum with a plate in the form of a circular sector and integral with the axis, keep this crosspiece at rest, so the brush, in the high position.
  • the brush is put into service by imposing a rotation in the opposite direction by pressing down on an oblique lateral upper arm also secured to the axis.
  • the support force of the brush is preferably adjusted as a function of the fragility of the sheet due to its cutting. This force can be modulated either by playing on the stiffness of the bristles, possibly supplemented by the action of a support blade; either in the final position more or less low of the brush relative to the plane of passage of the sheet.
  • the axis of the crosspiece of the braking brush is mounted on each side in a horizontal lateral slide of the station to allow to manually reposition it always above this rear shelf.
  • the support means on the upper arm of the lever then consists of a horizontal ramp driven by a vertical orthogonal translation movement, this ramp extending over the entire adjustment range of the tablet and the brush.
  • a device for controlling the fall of a cut sheet, on a stack of sheets, using a brush.
  • Such a device is described in the Japanese publication JP - A - 60 - 040371 and it includes a clamp which holds the front part of the sheet to move it from a first to a second position in which this sheet is dropped on top of it. 'a battery.
  • a brush acts on the back of the sheet to facilitate the deposit of the latter on the stack in formation. This brush acts in conjunction with a metal plate and these two elements can be adjusted according to the desired braking and displacement effect.
  • these manual adjustment operations are long and tedious and they increase the idle time of the machine when switching from one production to another according to a different format.
  • the object of the present invention is a braking device within a receiving station of a plate element processing machine, the positioning of which according to the format and the deactivation for small formats does not require practically more additional manual intervention.
  • a braking device comprising an oblique transverse brush oriented downwards and the downstream pivotally mounted about an axis located substantially at its upper edge, this brush being alternately lifted in rotation by elastic means during the passage of a clamp bar and lowered during the passage of a sheet by the vertical descent of a horizontal ramp acting on the upper end of an oblique arm oriented upwards and downstream secured to the axis of rotation of the brush to press this brush against a rear shelf mounted in a chassis movable longitudinally in the station, because the downstream part of the ramp is oblique oriented upwards.
  • the lowering of the brush remains constant for long formats, then decreases as this brush is advanced from a medium format to a short format, which reduces its force d 'support.
  • the brush reaches the downstream end of the ramp, therefore for small formats, it remains permanently in the raised position out of service, the too high end of the ramp can no longer act on its lowering arm.
  • the oblique part of the ramp can be linear, or in an arc or follow a sinusoidal or logarithmic curve depending on the desired relationship between the length of the format and the force of the brush.
  • the oblique portion of the ramp is held, mobile in rotation, between the downstream end of the straight portion of the ramp and the upper end of a vertical support rod, the other end is movable in rotation on an axis.
  • the effect of the oblique part can be readjusted according to the dimensions of this rod.
  • the axis of the brush is held in the same chassis as that of the tablet. Then, the movement of the tablet causes that of the brush which automatically always remains in coincidence.
  • upstream and downstream are to be considered in relation to the direction of movement of the sheet: an upstream part being oriented towards the station entrance on the right of the figure, while a part downstream is oriented to the left of this figure.
  • a sheet of paper or cardboard arriving in the X-X plane is pressed by a transverse brush 10 against the rear shelf 54 thus inducing braking friction forces.
  • This rear shelf 54 is retractable inside a structure providing a housing 55, the downstream part of this structure constituting the rear squaring cleat 56.
  • the position of this structure must be modified so that the rear shelf 54 and the squaring cleat 56 are found at the upstream edge of the sheet once it is stopped ready to be released on the above of the output stack. Therefore, this structure is held on either side in a movable frame 50 along a slide 51, and this to an extreme position 52 corresponding to the shortest format acceptable in the machine.
  • the oblique brush 10 oriented downwards and downstream, is fixed along a cross member 11 parallel and offset upwards.
  • a support blade 12 is inserted between the cross member 11 and the brush to press the end of the bristles to increase their stiffness.
  • Fixing means such as bolts 13 regularly spaced along the cross-member 11, make it possible to modulate the effect of the support blade 12. If desired, these fixings 13 also make it possible to offset the brush 10 more or less high by compared to the cross member 11 therefore to modify at will the final dimension of the end of the bristles of the brush when the latter is in the lowered position as illustrated in the figure.
  • This cross member 11 is carried by a through axis 20 which, more particularly according to the invention, is fixed at its two ends to the same movable frame 50 as that of the shelf 54.
  • This axis 20 can also be replaced by two half-axes present only at the ends of the crosspiece.
  • the brush 10 can be raised or lowered in a rotational movement around this axis 20.
  • Elastic means 22 maintain, at rest, the brush 10 in the raised position.
  • these means 22 may comprise a plate integral with the axis 20 having a lower edge in the form of a toothed circular section meshed with a drum containing a spiral spring whose external end is connected to the drum and the internal end to a central axis of rotation.
  • the axis 20 is also connected, at one of its ends, to an oblique arm 24 oriented upwards and downstream carrying at its end a roller 25 bearing against a horizontal ramp 40.
  • a descent in vertical translation of this ramp 40 induces a rotation of the brush 10 about its axis 20 which lowers it in the braking position.
  • This ramp being first horizontal, it always remains in contact with the roller 25 of the oblique arm 24 even though the brush 10 is advanced or moved back depending on the format of the sheet.
  • the horizontal ramp 40 is shorter than usual so as to be completed by a second oblique ramp 42 oriented upwards and downstream.
  • This oblique ramp is held at its two ends by axes of rotation, upstream at the end of the horizontal ramp 40 and downstream at the upper end of a vertical support rod 44 itself movable around a horizontal axis 45.
  • the ramp 40 is itself held by two lateral fasteners 76 belonging to the vertical movement control device.
  • the device for controlling the vertical movement of the ramp 40 first comprises a cam 60 connected to the general drive of the machine and whose position is read by the roller located at the end of the first branch of a lever. reading 62.
  • the other branch of the lever located opposite the first with respect to the point of rotation, is itself connected to a pull rod 64 acting on a rotation bar 66 actuating a horizontal axis 70 passing through the side wall of the receiving station through a bearing 72.
  • On this traversing axis 70 is mounted a first upstream angular lever 73 connected to a second downstream angular lever 74 by a synchronization pusher 75 fixed at its two ends in rotation to the respective upper branches.
  • the two lower branches of the levers 73 and 74 support, by rotational connections, the lateral fasteners 76 of the horizontal ramp 40.
  • the second lever 74 is itself also mounted on an axis held in the side wall of the station by a bearing.
  • a tension spring is also connected in its lower part to the horizontal ramp 40 and in its upper part to a fixed point of the station.
  • the device described above operates in the following manner.
  • the tension spring 78 can raise the ramp 40 which allows, simultaneously, a lifting of the brush 10.
  • the movable frame 50 is advanced or moved back so that the roller 25 remains in contact with the horizontal ramp 40, that is to say for long formats, the extent of the lowering of the brush 10 remains constant.
  • the corresponding advancement of the movable frame 50 means that the roller 25 begins to bear on the beginning of the oblique ramp 42. Then, the geometry of the cam 60 remaining constant, the support of the roller from an initially higher point causes the brush to come into contact with the sheet for a shorter period and this with a lower low point. The duration and intensity of braking are then automatically reduced for such a medium format. These braking duration and intensity are reduced as the movable chassis 50 is advanced as a function of the corresponding shorter format. In the extreme, when the chassis 50 is in its final position 52, the rotation of the brush 10 around the axis 20 is practically canceled, the roller 25 remaining under the support rod 44 of constant height. This braking was therefore purely and simply canceled for short formats.
  • the adjustment of the braking device according to the invention as a function of the format is done automatically by the simple adjustment of the rear shelf 54 due to the movement of the movable chassis 50 along its slide 51.
  • this movement of the chassis is motorized, the implementation of the reception station takes place particularly quickly even by unskilled persons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Replacement Of Web Rolls (AREA)
  • Braking Arrangements (AREA)
  • Making Paper Articles (AREA)
EP95106871A 1994-05-11 1995-05-06 Dispositif de freinage d'éléments en plaque au sein d'une station de réception d'une machine de traitement de tels éléments Expired - Lifetime EP0681975B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1477/94 1994-05-11
CH01477/94A CH689977A5 (fr) 1994-05-11 1994-05-11 Dispositif de freinage d'éléments en plaque au sein d'une station de réception d'une machine de traitement de tels éléments.

Publications (2)

Publication Number Publication Date
EP0681975A1 EP0681975A1 (fr) 1995-11-15
EP0681975B1 true EP0681975B1 (fr) 1997-08-06

Family

ID=4211403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106871A Expired - Lifetime EP0681975B1 (fr) 1994-05-11 1995-05-06 Dispositif de freinage d'éléments en plaque au sein d'une station de réception d'une machine de traitement de tels éléments

Country Status (9)

Country Link
US (1) US5599012A (zh)
EP (1) EP0681975B1 (zh)
JP (1) JP2670432B2 (zh)
KR (1) KR0156618B1 (zh)
CN (1) CN1060450C (zh)
CH (1) CH689977A5 (zh)
DE (1) DE69500514T2 (zh)
ES (1) ES2105810T3 (zh)
TW (1) TW348573U (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992844A (en) * 1997-12-19 1999-11-30 Marquip, Inc. Sheet deceleration device using pultruded bristle brushes
US6145833A (en) * 1998-06-02 2000-11-14 Marquip, Inc. Rotary brush sheet deceleration device
CH693989A5 (fr) 2000-05-12 2004-05-28 Bobst Sa Dispositif de freinage d'une machine de travail d'éléments en feuilles.
EP1882657B1 (de) * 2006-07-26 2011-11-09 Heidelberger Druckmaschinen Aktiengesellschaft Bogenbremsvorrichtung
FR2918048B1 (fr) * 2007-06-28 2011-05-20 Goss Int Montataire Sa Dispositif de freinage de produits plats et plieuse correspondante.
DE102008010985A1 (de) 2008-02-25 2009-08-27 Heidelberger Druckmaschinen Ag Bogenbremseinrichtung
ES2356585T3 (es) 2008-04-01 2011-04-11 Bobst Sa Dispositivo de frenado de una máquina de trabajo de elementos en láminas.
DE102010011689A1 (de) * 2010-03-17 2011-09-22 Heidelberger Druckmaschinen Ag Bogenbremsvorrichtung in der Nutzentrennstation
DE102013001778A1 (de) * 2013-01-31 2014-07-31 Heidelberger Druckmaschinen Ag Überwachungsverfahren zur Kollisionsvermeidung einer Stanzmaschine mit Bremsbürste
CN109677984A (zh) * 2019-01-16 2019-04-26 王桂芳 一种折页机中的旋转减速装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR406427A (fr) * 1909-08-24 1910-01-29 C. B. Cottrell & Sons Company Perfectionnements apportés aux appareils destinés à recevoir les feuilles dans les presses à imprimer
DE1013665B (de) * 1954-04-03 1957-08-14 Bobst & Sohn A G J Bogenablegevorrichtung in einer Bogen bearbeitenden und diese letzteren mit Hilfe von Greiferstangen befoerdernden Maschine, insbesondere Druckmaschine
US2829890A (en) * 1954-04-03 1958-04-08 Bobst & Son S A J Receiving mechanism in machines for operating on sheets
US3507489A (en) * 1966-09-06 1970-04-21 Masson Scott Thrissell Eng Ltd Sheet feeding apparatus
JPS6040371A (ja) * 1983-08-11 1985-03-02 Sugano Seisakusho:Kk 紙打抜き機における紙積層位置制御装置
DE3920407A1 (de) * 1988-08-03 1990-02-08 Hilmar Vits Vorrichtung zum ablegen von bogen an einer stapelstelle
DE4020398C1 (zh) * 1990-06-27 1992-02-13 Hilmar 5653 Leichlingen De Vits
US5141221A (en) * 1990-11-05 1992-08-25 Heidelberg Harris Gmbh Deceleration device in the folder of a rotary printing machine
DE4039813C2 (de) * 1990-12-13 1997-03-13 Kodak Ag Leitvorrichtung für die gestapelte Ablage von Papierblättern

Also Published As

Publication number Publication date
KR950031838A (ko) 1995-12-20
CH689977A5 (fr) 2000-02-29
CN1117466A (zh) 1996-02-28
KR0156618B1 (ko) 1999-02-18
JPH07315660A (ja) 1995-12-05
DE69500514T2 (de) 1998-01-29
ES2105810T3 (es) 1997-10-16
TW348573U (en) 1998-12-21
DE69500514D1 (de) 1997-09-11
US5599012A (en) 1997-02-04
CN1060450C (zh) 2001-01-10
EP0681975A1 (fr) 1995-11-15
JP2670432B2 (ja) 1997-10-29

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