EP0347799A1 - Umschlagerzeugungsmaschine - Google Patents

Umschlagerzeugungsmaschine Download PDF

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Publication number
EP0347799A1
EP0347799A1 EP89111105A EP89111105A EP0347799A1 EP 0347799 A1 EP0347799 A1 EP 0347799A1 EP 89111105 A EP89111105 A EP 89111105A EP 89111105 A EP89111105 A EP 89111105A EP 0347799 A1 EP0347799 A1 EP 0347799A1
Authority
EP
European Patent Office
Prior art keywords
blade
forming machine
fixed
envelope forming
machine according
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.)
Withdrawn
Application number
EP89111105A
Other languages
English (en)
French (fr)
Inventor
Alberto Marangoni
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.)
MARANGONI SpA
Original Assignee
MARANGONI SpA
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 MARANGONI SpA filed Critical MARANGONI SpA
Publication of EP0347799A1 publication Critical patent/EP0347799A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/261—Folding sheets, blanks or webs involving transversely folding, i.e. along a line perpendicular to the direction of movement

Definitions

  • the present invention refers to an envelope forming machine. In particular, it refers to a machine for the formation of paper and/or paperboard envelopes.
  • a production line for the formation of envelopes comprises: an unwinder of the continuous tape or paper coil; a possible printing and/or gumming unit; a gummer and perfora­tor or cutter of the closures; an envelope forming means; a means of detachment and closing of the bottoms and a table or tables to collect the finished products.
  • the object of the present invention is to make some modifi­cations and improvements to the known production lines in order to simplify the processing cycle, improve the products, acce­lerate the preparation and maintenance phases of the machinery and reduce the number of accessories and means necessary for different productions.
  • the mechanical devices are not capable of carrying out in totally correct or simple, fast and economic manner the action for which they were designed and used.
  • the ends of the envelopes are punched with means that do not guarantee a continuous feed of the paper tape and create some signs which, in the subsequent phases of gumming and closing of the bottoms, form four superimposed layers of paper.
  • the perforated punches must also be inter­changeable to suit the type and/or size of the envelopes to be formed, and are fairly difficult and lengthy to replace, to the detriment of production.
  • envelopes form­ing phases, i.e. the phases in which the edges are folded in the center and glued together, are obtained by means of pairs of lateral fixed wheels and accompanying rollers with forming plates. While substantially functional, these devices are numerous, substantially complicate the structure of the ma­chinery and require considerable maintenance, both for regu­lar operation and/or for positioning to suit the type and/or size of envelope to be prepared.
  • Another problem consists in the fact that the preformed enve­lopes are separated by tearing which detaches them along the lines perforated in previous punching phases. This tearing, besides requiring a notable energy absorption, is obtained by means of fairly complex, and on the whole expensive, devices. Tearing also causes an undesired formation of paper dust, which, through time, dirties the whole machine and surround­ing areas and makes the surrounding air unhealthy and unbreathable.
  • the object of the present invention is to eliminate the above problems.
  • the punching phase is obtained by means of the pair of opposite blades, adjust­able and rotating, along the sides of the continuous paper tape arriving from the unwinder. During this phase only the side profiles forming the end edges of the envelopes and the closing flaps are formed. Punching takes place by means of rotation of said opposite blade at right angles to the flow of paper tape, whose speed remains constant and without oscil­lations for each type of envelope.
  • the folding phase of the tubular body i.e. the formation of the body of the envelope, which follows punching, is obtained by means of a forming profile in which the continuous paper tape, punched, folds its sides naturally, connecting them and overlapping the longitudinal pregummed flaps. Said longitu­dinal flaps are stuck together by a central pressing roller, all at continuous speed.
  • the tubular body obtained is divided into envelopes by a straight cutting separator consisting of an adjustable rotating transversal blade, whose action is synchronized with the continuous feed of said tubular body.
  • the advantages of the envelope forming machine mainly consists in the fact that the envelope forming cycle substantially takes place at con­stant speed, without any intermittence and oscillation.
  • the punchings and subsequent operations are obtained with net, precise cuts, in perfect synchronization with the con­tinuous feed of the paper tape, without producing dust, with reduced power absorption, and more silently than in the pre­sent systems.
  • the continuous paper tapes (1) coming from any unwinding means coupled to longitudinal gumming units and possibly to transversal gumming units of the flaps and heading units, are fed, with known means, to the punching station.
  • This station comprises two operating heads (2) positioned one in front of the other, in alignment, and aligned with the opposite sides (3) of the continuous tapes, with respect to the sides of which they take up a substantially right-angled position.
  • Each operating head (2) comprises a rotating drum (4) equipped with a tangential support (4′) on which an interchangeable blade (5) is fixed, whose axial position can be easily ad­justed with lock nuts (6) operating in longitudinal slits (7) obtained in said support (4′).
  • Each rotating drum (4) is supported at the sides by bearings (9) and comprises an elongated, grooved end (10) which is coupled with a sprocket with helical toothing (11) equipped with an end thrust bearing (12).
  • the helical sprocket (11) is engaged in a helical gearing (13) coaxial with a conical pinion (14).
  • Said conical pinion (14) receives the rotating movement from other members, not illustrated, as they form part of the known technique.
  • the rotation axes of said rollers (15) are integral with supports (16), fixed to a body (17) which can slide, guided by at least one tang or longitudinal key (18), along a fixed pin (19).
  • the fixed pin (19) is fixed to the supporting structure (20) of the operating head (2).
  • the slip of the body (17) along the fixed pin (19) is obtained by means of the knob (21) which, rotating, engages its threa­ded end (22) in a corresponding threaded hole (23), coaxial to the pin (19).
  • each transversal displacement along the grooved end (13) causes a corresponding rotation of the sprocket (11) in cir­cumferential direction.
  • Said circumferential displacements consent precise position recordings of each drum (4), carrying blade (5), with respect to the position of the opposite drum (4).
  • the continuous tape (1) continues its travel and passes to the subsequent tubu­lar body forming station, i.e. station to form the central closed part of the envelope.
  • the tape (1), towed, is inserted in a fixed interchangeable conveyor (29).
  • Said conveyor consists of a flat central body (30) equipped with two curved side profiles (31), with pro­gressive variable flow from the entrance point (32) of the tape and the exit point (33).
  • Said profiles (31) assume, in the exit point (33), a completely folded shape in substan­tially parallel position, above the flat central body (30), and form with said central body (30) a slit (34) of iden­tical thickness and width to those of the tubular body of the envelopes in formation.
  • the tubular body At the exit of the slit (34), the tubular body has taken up its final conformation and a pressing roller (36) presses the surmounted edges (3) of the flaps (35) to make them per­fectly adherent.
  • the continuous tape (1) is substantially formed by a sequence of tubular bodies delimited by the rear (27) and front (28) edges, intercalated by intermediate flat zones, laterally profiled.
  • the continuous tape is passed into a cutting station.
  • Said station comprises a fixed lower transversal blade (37), equipped with means of regulation (38), and an upper transversal blade (39), with means of regulation (42), applied to a rotating roller (40).
  • the rotating speed of the roller (40) is such that, each time the cutting edge of the upper movable transversal blade (39) is aligned with and brushes against the cutting edge of the lower fixed transversal blade (37), the continuous tape (1) which slides between them is aligned according to a broken transversal line (41) corresponding to the center line of each punching (24) and indicated in the figure (3).
  • the upper movable blade (39) cuts with a net stroke, without producing dust or jagged effects, the continuous tape (1) along the abovementioned broken transversal lines (41).
  • the envelopes (8) are thus formed apart from the folding and glueing of the rear flap (25) which is carried out with conventional methods.
  • the separating cut of the bags, carried out at right angles to same, is made with the rotating direction of the roller (40), movable blade holder (39), equal to the slip direction of the continuous tape (1) and in collaboration with the lower fixed blade (37), also positioned in the direction of the motion of said tape.
  • the regulation of the blades (37) and (39) makes it possible to make net cuts, without tears, without draggings or for­mations of dust.
  • Bags of different lengths are obtained by increasing or de­creasing the feed speed of the continuous tape (1), the rotating speed of the roller (40) remaining steady.

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  • Making Paper Articles (AREA)
EP89111105A 1988-06-24 1989-06-19 Umschlagerzeugungsmaschine Withdrawn EP0347799A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21104/88A IT1217927B (it) 1988-06-24 1988-06-24 Perfezionamenti a macchine per la formazione di buste a sacco
IT2110488 1988-06-24

Publications (1)

Publication Number Publication Date
EP0347799A1 true EP0347799A1 (de) 1989-12-27

Family

ID=11176808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111105A Withdrawn EP0347799A1 (de) 1988-06-24 1989-06-19 Umschlagerzeugungsmaschine

Country Status (2)

Country Link
EP (1) EP0347799A1 (de)
IT (1) IT1217927B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10023999A1 (de) * 2000-05-17 2001-11-22 Winkler & Duennebier Ag Verfahren zur Herstellung von Briefhüllen aus einer bewegten Materialbahn

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185045B (de) * 1952-05-12 1965-01-07 Marius Berghgracht Maschine zum Herstellen von Schlauchabschnitten mit Seitenfalten fuer Faltbeutel
US4359919A (en) * 1979-03-29 1982-11-23 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg Rotary punch comprising a backup roll bearing on the cutter roll
DE3337199A1 (de) * 1983-10-13 1985-05-02 Chapman Envelopes Ltd., Bromley, Kent Vorrichtung zur herstellung von umschlagzuschnitten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185045B (de) * 1952-05-12 1965-01-07 Marius Berghgracht Maschine zum Herstellen von Schlauchabschnitten mit Seitenfalten fuer Faltbeutel
US4359919A (en) * 1979-03-29 1982-11-23 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg Rotary punch comprising a backup roll bearing on the cutter roll
DE3337199A1 (de) * 1983-10-13 1985-05-02 Chapman Envelopes Ltd., Bromley, Kent Vorrichtung zur herstellung von umschlagzuschnitten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10023999A1 (de) * 2000-05-17 2001-11-22 Winkler & Duennebier Ag Verfahren zur Herstellung von Briefhüllen aus einer bewegten Materialbahn

Also Published As

Publication number Publication date
IT1217927B (it) 1990-03-30
IT8821104A0 (it) 1988-06-24

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