EP0647563B1 - Siegelmaschine zür Verwendung von Klebestreifen aus Papier für quaderförmige Schachteln mit umfaltbaren Verschliessklappen - Google Patents

Siegelmaschine zür Verwendung von Klebestreifen aus Papier für quaderförmige Schachteln mit umfaltbaren Verschliessklappen Download PDF

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Publication number
EP0647563B1
EP0647563B1 EP94202905A EP94202905A EP0647563B1 EP 0647563 B1 EP0647563 B1 EP 0647563B1 EP 94202905 A EP94202905 A EP 94202905A EP 94202905 A EP94202905 A EP 94202905A EP 0647563 B1 EP0647563 B1 EP 0647563B1
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EP
European Patent Office
Prior art keywords
tape
unit
roll
box
supporting
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Expired - Lifetime
Application number
EP94202905A
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English (en)
French (fr)
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EP0647563A1 (de
Inventor
Augusto Marchetti
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/06—Applying adhesive tape
    • B65B51/067—Applying adhesive tape to the closure flaps of boxes

Definitions

  • the present invention relates to an adhesive paper sealing machine for parallelepiped boxes with turn-down flaps.
  • an adhesive paper taping device that comprises a plurality of individual separately dismantable units, among which a unit for supporting a roll of adhesive paper tape, units for controlling, centering and feeding the tape itself, a contrasting unit co-operating with the feeder unit, a unit for shearing and a unit for moistening the tape, and lastly a unit for applying the tape to the top of the box to be sealed.
  • a similar taping device can also be provided for sealing the bottom of the box.
  • a box to be sealed is made to advance by a pair of lateral belts along a set of rollers, and it presses in sequence a first and a second microswitch.
  • the operation of the first microswitch determines the operation of the tape feeder unit of each taping device, that causes the tape itself to advance, unwinding it from the roll, by an amount of a predetermined length; during the tape advance, its surface provided with glue is made to become adhesive through the action of the moistening unit, so that, when the box arrives, it can glue itself on the front surface of the same box, by exploiting the pressure of a roller forming part of the tape application unit.
  • the further advance of the box determines the operation of the second microswitch, that releases the movement of the tape inside the machine, so that the advance of the box causes the free unwinding of the tape from the roll, to allow the tape to be glued on the upper surface of the box and possibly also the lower one. At the end the tape is sheared off, and the machine is ready to start a new cycle.
  • the problem exhibited by the described machine is linked with the fact that, especially with tapes whose adhesive is of poor quality, the resistance offered to the action of unwinding the tape could, during the advancement of the box, cause the section of the tape that is not yet perfectly glued on the front surface to come unstuck, determining the failure of the entire sealing operation.
  • the object of the present invention is to provide an adhesive paper sealing machine that is not affected by the abovementioned problem.
  • an adhesive paper sealing machine for parallelepiped boxes with turn-down flaps, comprising a supporting base for the boxes to be sealed, means for the advancement of the boxes associated with said supporting base, a head that can be displaced vertically at a variable distance with respect to said supporting base, at least one taping device supported by said head and comprising a unit for supporting a roll of tape of adhesive paper, a unit for feeding the tape, a contrasting unit co-operating with the unit feeding the tape, a unit for shearing the tape, a unit for moistening the tape and a unit for applying the moistened tape on the box to be sealed, said machine also comprising sensor means, excited by the boxes during the advancement, for the activation and disactivation of said feeder unit and said contrasting unit and for the activation and disactivation of said shearing unit, characterized in that said roll of tape is mounted in the supporting unit in a freely rotatable manner so that, following the activation and subsequent disactivation of the feeder and
  • the presence of the loose section of adhesive paper tape is such that, at least initially and until such abundance has not exhausted itself, the tape recovered by a box to be sealed is not held back by the inertia and by the roll rotation friction, thus preventing the initial tape section just applied to the front of the box from coming unstuck from the box itself.
  • a sealing machine comprises a supporting base 1 that defines a set of rollers 2 for the boxes to be sealed, and a pair of lateral advancement units 4, provided with respective belts 5, superimposed over said supporting base 1 and that can be moved reciprocally closer to one another, by rotating a crank 6, to allow the belts 5 to engage with opposite sides 7 of a box 3 with the purpose of causing the latter to advance along said supporting base 1 in the direction of the arrow A.
  • a first microswitch M1 and a second microswitch M2 both provided with an operating lever 201 extending above the set of rollers 2 in a direction orthogonal to the direction in which the boxes advance.
  • the machine also comprises a head 8 (Figs. 2-4) fastened to two lateral pillars 9 in a position equidistant from them; the pillars 9 can slide vertically within respective guides 10 to arrange the head 8 at a variable distance from the supporting base 1, so as to allow the passage of boxes to be sealed having variable height.
  • a similar lower taping device is housed under the set of rollers 2 of the supporting base 1, and is accessible through an opening 130 in the set of rollers (Fig. 1).
  • the taping device 11 is constituted by a plurality of individual units, separately dismantable to allow for maintenance of the device itself, fastened to a lateral supporting shoulder 15 to which on the opposite side there corresponds a lower containment shoulder 16; the two shoulders 15 and 16 are loosely fastened to the two protruding arms 12 (or to special supports 200 in the supporting base 1, in the case of the lower feeder unit).
  • the units of the device 11 are: a unit 17 for supporting the roll 14 of the tape 13 of adhesive paper; a unit 99 for tightening the tape; a unit 18 for centering the tape 13; a pair of co-operating plates 19 and 20 for the guidance and movement of the tape 13; a unit 21 for feeding the tape 13 and a contrasting unit 22 associated with the two plates 19 and 20, respectively, to determine the intermittent advancement of the tape 13 in relation to the operating cycle of the machine; a shearing unit 23 to separate sections of the tape 13 having a pre-determined length from the continuous tape taken from the roller 14; a moistening unit 24 for moistening the face of the tape 13 provided with adhesive; and an application unit 25 suitable for executing the application of the separated and moistened section of tape 13 on the box 3 to be sealed.
  • the supporting unit 17 consists of an arm 90, fastened to the lateral shoulder 15, at the upper end of which a horizontal hub 91 is fastened.
  • a horizontal hub 91 is fastened on the hub 91 .
  • the plate 93 can be removed from the hub 91 to allow the installation of the roll 14; on the inner face of the plate 92, thanks to two screws 94 placed in diametrically opposed positions, a flexible disc 95 is fastened.
  • the plate 92 is also provided with a circular opening 96 located along a radial direction orthogonal to the direction joining the two screws 94; such opening allows the passage of a piston 97 of a pneumatic cylinder 98 fastened to the plate 92.
  • Such piston 97 when operated, pushes up against the disc 95 and elastically deforms it (Fig. 10), to allow, as will be shown later, a braking of the roll 14.
  • a pivot 107 that supports an idle coaxial roller 108 for returning the tape 13 toward the tape tightening unit 99.
  • the roll 14 is mounted on the hub 91, inside the two plates 92 and 93, in a freely rotatable manner and with the face provided with adhesive facing toward the outside of the roll, so that said face provided with adhesive faces toward the moistening unit 24 and toward the front wall of the box 3 advancing along the supporting base 1.
  • the tape tightening unit 99 consists essentially of a lever 100 hinged at 102 to a metal housing 103 in turn fastened with screws and nuts to a box-like metal casing 37 containing the feeder unit 21; the upper end of the lever 100 has an idle roller 101 for moving the tape 13, while a spring 104 urges the same lever 100 to a position suitable for ensuring, at rest and during the taping operation, the tension of the tape 13 fed from the roll 14. On the housing 103 there are also two other idle rollers 105 and 106 to return the tape 13 toward the centering unit 18.
  • the centering unit 18 is identical to the centering unit of the machine described in the European patent application No. 0558122; it comprises an external support 26 fastened to the lateral shoulder 15 and an internal support 27 fastened to the first in an adjustable manner thanks to a bolt 203 and also fastened to the shoulder 15 thanks to a pivot 29 having one threaded end (not visible in the drawings), on which there is rotatably mounted an idle roller 29 provided with lateral shoulders 30 for holding and guiding the tape 13.
  • the internal support 27 slides inside the external support 26, it moves the idle roller 29 and thus guiding the tape 13 of adhesive paper to the desired position.
  • the pair of co-operating plates 19 and 20 consists of a lower fixed plate 20 separably fastened to the lateral shoulder 15, and by an upper movable plate 19 rotatable with respect to a horizontal pivot 31 separably fastened to the shoulder 15, that also acts as the support for an idle roller 32 for returning the tape 13.
  • the two plates 19 and 20 are at angle of about 40° to allow an easier movement of the tape 13, and they have respective central openings 33 and 34, whose purposes will be explained later in connection with the description of the feeder and contrasting units 21 and 22.
  • Two chutes 35 and 36 located at the exit from the plates 19 and 20 co-operate for a fixed contrasting guide 65 to displace the tape 13 at an angle so as to present it orthogonal to the moistening unit 24 and to the direction of translation of the box 3.
  • the feeder unit 21 of the tape 13 comprises, as already said, the box-like metal casing 37 fastened through nuts and screws to a corresponding casing of the underlying shearing unit 23.
  • a twin-action pneumatic cylinder 38 Inside the box-like casing 37 there is a twin-action pneumatic cylinder 38, whose stem is connected by means of an articulated joint to a pivot 39 protruding frontally in an eccentric position from a semicircular gearwheel 40 that directly meshes with a toothed wheel 41 with a lower diameter to which there is eccentrically and integrally fastened a unidirectional wheel 42 that passes through the opening 33 of the plate 19.
  • An abutment screw with a knob 43 fastened in an adjustable manner to the casing 37 allows the adjustment of the stroke of the cylinder 38 to be made, and thus the angular stroke of the wheel 42, and as a consequence the length of the section of the tape T that, due to the operation of the feeder unit 23, protrudes vertically in front of the application unit 25 (Fig. 6).
  • the contrasting unit 22 comprises a box-like metal casing 44 wherein there is a single-action pneumatic cylinder 45 with an elastic return stroke, whose stem is coupled by means of an articulated joint with a pivot 46 that extends between two bracket levers 47 hinged at 60 on the casing 44.
  • a rubber wheel 49 is rotatably mounted that protrudes through the opening 34 of the plate 20 to exert a contrasting action with the wheel 42 of the feeder unit 21 for the advancement of the tape 13.
  • the linear movement of the cylinder 45 is transformed in a movement whereby the wheel 49 is moved closer to or farther away from the wheel 42, thus allowing the movement or otherwise of the tape 13 of adhesive paper in synchronisation with the operation of the unit 21.
  • the unit 23 for shearing the tape 13 comprises a box-like metal casing 50 to which there is separably fastened the casing 37 of the feeder unit 21 of the tape and which is in turn separably fastened to the movable plate 19.
  • a twin-action pneumatic cylinder 51 Inside the casing 50 there is a twin-action pneumatic cylinder 51, whose stem is coupled by means of an articulated joint to a pivot 52 that extends between two connecting rods 53 hinged at 54 on a pair of levers 55 hinged at 56 and integrally holding a shearing blade 57 co-operating with a fixed counterblade 58 under the thrust of a spring 59 acting on the blade holding levers 55.
  • the connecting rods 53 push the blade 57 to shear the tape 13 of adhesive paper with the assistance of the counterblade 58 agains which the blade 57 is pressed by the spring 59.
  • the moistening unit 24 consists of a bowl 60 with a lateral hole 61 to which a water feeder line 62 is connected. On the bowl 60 there is an electrical resistance 63 to heat the moistening water so as to obtain a better activation of the glueing mass associated with the tape 13 of adhesive paper. There is a brush 64 in the bowl's water that by capillarity brings water into contact with the tape 13 against the contrasting guide 65, inside which there is also an electrical resistance 66.
  • the unit 25 for the application of the moistened tape consists of a first lever 67 with an idle rubber-coated roller 68, a second lever 69 with an idle rubber-coated roller 70, a centre of rotation 71 that is common to the two levers 67 and 69, and a spring 72 that when at rest keeps the levers 67 and 69 in the close-up position shown in Fig. 5.
  • a gearwheel 73 integral with the lever 67 and rotatable with the same on the centre of rotation 71 is connected to a toothed wheel 74 centred at 75 through a chain 76, to which the stem of a pneumatic cylinder 78 hinged at 79 on the shoulders 15 and 16 is fastened at 77.
  • the box 3 acts on the roller 70 of the lever 69, causing the rotation of the latter on the centre of rotation 71 sufficient for the disactivation of the valve 80, that releases air from the cylinder 78.
  • a brush 81 for pressing the tape over the box 3 that is fastened to a lever support 82 hinged at 83 on the shoulders 15 and 16 and urged in the position shown in Fig. 5 by a spring 84 reacting against a fixed pivot 85.
  • a release unit 206 consisting of a pneumatic cylinder 207 hinged at 208 on the lateral shoulder 15 and with stem connected at 209 by means of an articulated joint to a bracket 210 fastened to the metal casing 37 of the feeder unit 21.
  • the operation of the cylinder 207 allows, after a preset time has elapsed after the end of the last operating cycle completed by the machine, to execute the opening of the path of the tape 13 between the plates 19 and 20 (the units 99, 21 and 23 rotate together with the movable plate 19 round the centre of rotation 31), so as to prevent or in any case to eliminate any possible jammings of the tape 13.
  • Such opening can also be used for purposes of periodic maintenance of the feeder unit 11.
  • a support 86 on which there is a plurality of solenoid valves E to operate the various pneumatic cylinders described above during the cycle of operation of the machine.
  • a few solenoid valves of said plurality are shown in the overall diagramme of Fig. 11.
  • one solenod valve E1, interlocked with the first microswitch M1 controls the flow of air in the twin-action cylinder 38 to determine the extension or retraction of the corresponding stem;
  • a second solenod valve E2, interlocked with the second microswitch M2 controls the flow of air both in the twin-action cylinder 51 and in the single-action cylinder with an elastic return stroke 98;
  • a box 3 to be sealed is placed on the rollers 2, and is made to advance by the belts 5 under the head 8 of the machine.
  • the upper taping unit 11 (as well as the lower one) is in the condition shown in Figs. 2 and 5.
  • the latter triggers the solenoid valve E1 associated with the feeder unit 21; the solenoid valve E1 operates the cylinder 38 so as to determine the return of its stem; through the semicircular gear 40 and the toothed wheel 41, this causes the rotation of the wheel 42 which, thanks to the contrasting action executed by the rubber wheel 49, determines the advancement of the tape 13 toward the chutes 35 and 36 by an amount whose length is preset by the knob screw 43; the tape 13, having gone through the chutes 35 and 36, runs between the guide 65 and the brush 64, which moistens the adhesive on the same tape 13, and exits under the feeder unit 11 so that a section T of moistened tape 13 hangs vertically at a given point of the path of the advancement of the box 3 (Figs. 3 and 6).
  • the rotation of the two co-operating wheels 42 and 49 unwinds some tape 13 from the roll 14; the resistance opposed by the latter to the unwinding of the tape 13 determines an urge on the lever 100 that rotates slightly on its fulcrum 102 and moves closer to the roll 14.
  • the lever 100 is returned to the at rest position by the spring 104, while the rotation of the roll 14, freely rotatable on the hub 91, continues by inertia so as to determine a looseness 205 of tape 13 that is not tight between the roll 14 and the entry to the plates 19 and 20.
  • the box 3 meets the section of hanging moistened tape 13, that adheres to the front wall of the same box 3, exploiting the pressure exerted by the roller 70 on the lever 69, urged, as already said, by the spring 72.
  • the box 3 operates the lever 202 of the second microswitch M2 (Fig. 4) which, activating the solenoid valve E3, determines the release of the air from cylinder 45; this returns elastically to the at rest position, causing the rotation of the levers 47 and as a consequence the displacement of the rubber wheel 49 away from the wheel 42.
  • the tape 13 can thus run freely between the plates 19 and 20 (Fig. 7).
  • the subsequent forward movement of the box 3 calls for tape 13; this initially determines the elimination of the looseness 205, and only later the unwinding of tape 13 from the roll 14. In this way the tape required initially by box 3 does not exert any resistance to the traction on the part of the box 3, thus preventing the section T glued on the front wall of the box 3 from coming unstuck.
  • the tape 13 called for by the box 3 must be unwound from the roll 14, the resistance to traction must no longer be overcome by the mere section of tape glued on the front surface, but also by a section of tape glued to the upper surface of the box 3. This naturally also holds for the section of tape glued to the lower surface of the box.
  • the tape 13 called for by box 3 passes in front of the brush 64, that moistens the adhesive present on the face of the same tape.
  • the rear edge of tape is applied to the rear wall of the box 3 by the roller 68, urged by the spring 72 to adhere to said rear wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)

Claims (3)

  1. Papierklebeband verwendende Verschließmaschine zum Verschließen von quaderförmigen Kisten (3) mit umfaltbaren Verschließklappen, umfassend ein Grundgestell (1) für die zu verschließenden Kisten (3), dem Grundgestell (1) beigeordnete Mittel (5) zur Vorwärtsbewegung der Kisten, einen Kopf (8), der bezüglich dem Grundgestell (1) in einem variablen Abstand senkrecht verschoben werden kann und mit zumindest einer durch den Kopf (8) getragenen Bandabwickelvorrichtung (11), und umfassend eine Einrichtung (17) zum Tragen einer Rolle (14) aus Papierklebeband (13), eine Einrichtung (21) zum Zuführen des Bandes (13), eine Gegeneinrichtung (22), die zum Festlegen der intermittierenden Vorwärtsbewegung des Bandes in Bezug auf den Arbeitszyklus dient und mit der Einrichtung (21) zum Zuführen des Bandes (13) zusammenwirkt, eine Einrichtung (23) zum Abtrennen des Bandes (13), eine Einrichtung (24) zum Anfeuchten des Bandes (13) und eine Einrichtung (25) zum Aufbringen des angefeuchteten Bandes (13) auf der zu verschließenden Kiste (3), wobei die Maschine ebenso Sensormittel (M1, M2) umfaßt, die zur Aktivierung und Deaktivierung der Zuführeinrichtung (21) und der Gegeneinrichtung (22) und für die Aktivierung und Deaktivierung der Abtrenneinrichtung (23) während der Vorwärtsbewegung durch die Kisten (3) betätigt werden,
    dadurch gekennzeichnet, daß die Rolle (14) aus Band (13) in der Trageinrichtung (17) in frei drehbarer Weise angebracht ist, so daß nach der Aktivierung und der anschließenden Deaktivierung der Zuführeinrichtung (21) und der Gegeneinrichtung (22) zum Abwickeln des Anfangsabschnitts (T) des Bandes (13) von der Rolle (14), die Rolle (14) aufgrund der Massenträgheit ihre Rotation fortsetzt, um so zwischen der Trageinrichtung (17) und der Zuführeinrichtung (21) einen losen Bandabschnitt (205) zu erhalten, der anschließend durch die sich vorwärts bewegende Kiste (3) ohne irgendwelchen Widerstand zu erfahren eingezogen wird, wobei die Trageinrichtung (17) ebenso durch die Sensormittel (M1, M2) gesteuerte Bremsmittel (98, 95) umfaßt, um die Trägheitsrotation der Rolle (14) aus Band (13) anzuhalten, wenn der Verschließvorgang einer Kiste (3) beendet wurde.
  2. Maschine nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die Trageinrichtung eine Nabe (91), auf der die Rolle (14) aus Band (13) frei drehen kann, wie auch zwei seitliche Aufnahmeplatten (92, 93) umfaßt, die auf der Nabe (91) befestigt sind, wobei die Bremsmittel (98, 95) eine flexible Scheibe (95) umfassen, die mit einer dieser Platten (92) fest verbunden ist und durch einen Pneumatikzylinder (98) gedrückt wird, um sich zu verformen, um so mit einer Seitenwand der Rolle (14) in Eingriff zu gelangen und damit deren Trägheitsrotation anzuhalten.
  3. Maschine nach Anspruch 1,
    dadurch gekennzeichnet, daß
    zwischen der Trageinrichtung (17) der Rolle (14) und der Zentriereinrichtung (18) elastische Mittel (99) vorhanden sind, um das Band (13) unter Spannung zu halten.
EP94202905A 1993-10-12 1994-10-07 Siegelmaschine zür Verwendung von Klebestreifen aus Papier für quaderförmige Schachteln mit umfaltbaren Verschliessklappen Expired - Lifetime EP0647563B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI932156 1993-10-12
ITMI932156A IT1271488B (it) 1993-10-12 1993-10-12 Macchina sigillatrice a carta gommata per scatole parallelepipede a falde ribaltabili

Publications (2)

Publication Number Publication Date
EP0647563A1 EP0647563A1 (de) 1995-04-12
EP0647563B1 true EP0647563B1 (de) 1997-07-16

Family

ID=11367012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202905A Expired - Lifetime EP0647563B1 (de) 1993-10-12 1994-10-07 Siegelmaschine zür Verwendung von Klebestreifen aus Papier für quaderförmige Schachteln mit umfaltbaren Verschliessklappen

Country Status (3)

Country Link
EP (1) EP0647563B1 (de)
DE (1) DE69404254T2 (de)
IT (1) IT1271488B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846621A1 (de) * 1996-12-04 1998-06-10 Connex Beheer B.V. Vorrichtung zum Anbringen eines Papierklebestreifens auf einer zu schliessenden Schachtel
EP1074474A1 (de) * 1999-07-28 2001-02-07 Tien Heng Machinery Co., Ltd. Vorrichtung zum Verschliessen von Kartons mittels Papierstreifen
US7937905B2 (en) * 2008-02-29 2011-05-10 Illinois Tool Works Inc. Tape guide plate and finger plate with integral rollers
CN104925319A (zh) * 2015-05-27 2015-09-23 桐乡市红旗塑料包装袋厂 包装盒贴胶封口装置
CN112224550A (zh) * 2020-09-30 2021-01-15 湖南常德牌水表制造有限公司 一种可快速包装的水表打包机
CN114476249B (zh) * 2022-03-09 2023-07-04 浙江鼎业机械设备有限公司 一种缠绕封箱机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195971A (en) * 1966-03-22 1970-06-24 Minnesota Mining & Mfg Flat Surface Tape Applicator Head.
IT1254218B (it) * 1992-02-25 1995-09-14 Augusto Marchetti Macchina a carta gommata per la sigillatura di scatole parallelepipede a falde ribaltabili

Also Published As

Publication number Publication date
DE69404254T2 (de) 1998-01-15
ITMI932156A1 (it) 1995-04-12
ITMI932156A0 (it) 1993-10-12
IT1271488B (it) 1997-05-28
EP0647563A1 (de) 1995-04-12
DE69404254D1 (de) 1997-08-21

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