EP0465771A1 - Dispositif d'alimentation en ruban adhésif pour tête de fermeture et machine de fermeture pour cartons - Google Patents

Dispositif d'alimentation en ruban adhésif pour tête de fermeture et machine de fermeture pour cartons Download PDF

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Publication number
EP0465771A1
EP0465771A1 EP91106072A EP91106072A EP0465771A1 EP 0465771 A1 EP0465771 A1 EP 0465771A1 EP 91106072 A EP91106072 A EP 91106072A EP 91106072 A EP91106072 A EP 91106072A EP 0465771 A1 EP0465771 A1 EP 0465771A1
Authority
EP
European Patent Office
Prior art keywords
adhesive strip
adhesive
strip
carton
rollers
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Withdrawn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
EP91106072A
Other languages
German (de)
English (en)
Inventor
Juan Sansa-Garcia
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.)
Serpack SA
Original Assignee
Serpack 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 Serpack SA filed Critical Serpack SA
Publication of EP0465771A1 publication Critical patent/EP0465771A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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 a device for supplying adhesive strips for sealing heads of carton sealing machines, which, in addition to the inherent advantages of its structure, also offers various advantages, as described below, for its intended use.
  • Known carton sealing machines have a lower and / or an upper sealing head, which feed the adhesive strip or the self-adhesive tape to the relevant lower and / or upper horizontal sides of the carton and the lower and / or upper part of the front and rear sides of the carton and attach them to it, while it is being transported over the table of the box sealing machine in question.
  • the feed head for the self-adhesive strip in these carton closing machines usually comprises a frame consisting of two longitudinal, vertical and mutually parallel plates, with two mutually opposed, parallel, flat, vertical lever pairs which are pivotable and mechanically in the frame are coupled together so that their movement is synchronous, with freely rotating cylinders sitting at the relevant free end of each pair of levers - one at the entrance and another at the exit of the sealing head - which press the adhesive strip against the relevant part of the carton;
  • a separating device is provided which ends the sticking of the strip onto the cardboard.
  • the feed head of the machine has a pair of rollers that can be driven in rotation, which feed the adhesive strip to the cardboard, one of the rollers being motor-operated, and guides for the non-moistened adhesive strip, which - in the direction of travel of the strip - in front of and behind the pair of rollers lie, as well as a moistening device for the adhesive strip.
  • the rollers are designed such that one of them has a plurality of circular recesses in the form of channels on its periphery, and the other roller has corresponding projecting rings aligned with the recesses, as a result of which the starting piece of the supplied adhesive strip is cross-profiled and thus gains a certain stability .
  • the strip is advanced by pressing the motor roller against the adhesive side.
  • an outlet slot is provided which is narrow in design and is provided with an enlarged inlet opening in order to facilitate the entry of the previously profiled strip.
  • a flattening of the strip which was previously deformed in the longitudinal direction is achieved, which has the purpose, which has not been entirely achieved, of providing a substantially flatter humidification surface for the moistening device. Since the adhesive strip comes out of the slot largely flattened, it can fold easily after its original rigidity has been lost and can therefore no longer be attached to the cardboard properly, i.e. the rollers interacting with the pair of levers at the entrance of the sealing head, which hit the front part of the carton to be sealed, can no longer work properly or not at all.
  • the non-driven, freely rotatable roller is pressed against the other roller - with an adhesive strip in between - by means of an electromagnetic device which has a movable shaft which exerts pressure on an eccentric wheel arranged in an eccentric axis, the eccentric axis is identical to the freely rotating roller.
  • this roller is brought out of contact with the motor roller when actuation by the electromagnetic device is interrupted.
  • This separation position of the two rollers, or rest position corresponds to the operating phase in which the cylinders of the lever mechanism of the closing head in question apply the moistened adhesive strip to the cardboard to be sealed. It also corresponds to the machine's rest position.
  • the contact position of the rollers corresponds to the beginning of the feeding of the free end of the adhesive strip to the rollers, before they come into contact with it and begin to attach the strip to the box.
  • the adhesive strip can be made of paper that is coated with an adhesive that is glued by wetting, usually with water.
  • the carrier material for the adhesive strip can be made of any suitable material.
  • the device according to the invention for feeding adhesive strips for sealing heads of carton sealing machines corresponds broadly to the feeding device of the type just described, that is to say that it attaches the adhesive strip to the relevant top and / or undersides of the carton and to part of the front and rear sides of the carton, and has a frame part consisting of two longitudinal, vertical and mutually parallel plates, with two mutually parallel, flat vertical pairs of levers arranged opposite one another, which are pivotally and mechanically coupled to one another in such a way that their movement is synchronous, with freely rotating at the relevant free end of each pair of levers Rollers sit - one at the entrance and another at the exit of the sealing head - which press the adhesive strip against the relevant part of the carton and that a separating device is provided at the end of the feeding of the adhesive strip to the carton; that a pair of rotatable rollers are provided, one of which is driven by a motor, and guide sections for the adhesive strip before and after the pair of rollers, provided with a holding part for supporting the adhesive strip in the moistening
  • the feed device is characterized in that one of the rollers of the pair of rollers has a concave outer surface line which bears on the adhesive side of the adhesive strip, and one of the rollers is mounted freely rotating about an axis of rotation located in a support part, the support part being pivotably attached to the housing, which is in turn removable attached to the frame of the capping head, and that one roller bears against the other, driven roller, which in turn has a convex outer surface line, the shape of which is complementary to that of the other roller, so that the adhesive strip during its passage through the Feeder is molded; that the guides in the section located after the rollers and following the separating device have a first section with a C-shaped cross section, the base of which is convex and lies against the non-adhesive side of the adhesive strip, and the outer part of which is bent so that it hooks around the longitudinal edges of the adhesive strip; that the first section is followed by a second, flat section, on which the non-adhesive side of the adhesive tape is supported
  • the feed device according to the invention for sealing heads of carton sealing machines has, among other things, the advantage according to the present utility model that it gives the initial section of the adhesive tape greater, lasting strength, wherein kinking or folding of the adhesive tape is avoided until it emerges from the feed device, since it is not a subsequent one experiences violent flattening in a narrow guideway, as is the case with the known devices; that the adhesive strip is transported on its non-adhesive side and thus the strip is not damaged; that the possibility of throwing in the initial section of the strip is excluded, since it is not forcibly conveyed further than in the case of known feed devices when entering the narrow conveyor path of the outlet slot.
  • the device according to the invention can thus also be used in relatively simple carton closing machines, since it is both small in volume and low in price.
  • the feed device according to the invention for adhesive strips for sealing heads of cardboard sealing machines also has other advantages which can easily be derived from the exemplary embodiment set out below for a better understanding of the characteristics shown above. Further details of the invention will be dealt with, supplemented by drawings which represent a practical exemplary embodiment of the feed device according to the invention in accordance with the present utility model.
  • FIG. 1 shows an elevation of the upper feed device with the adhesive strip passing through it
  • FIG. 2 shows a plan view and a section along line A - A of FIG. 1 without the adhesive strip.
  • Fig. 3 shows the leadership of the device in elevation and in section according to B - B of Fig. 4, which corresponds to a plan view of the guide.
  • 5 shows the guidance of the lower feed device (not shown here, but it corresponds to that of FIGS. 1 and 4, rotated accordingly) according to section line C - C of FIG. 6, which corresponds to a view from a frog's perspective.
  • Fig. 7 is a partial view according to X in Fig. 5 and relates to a lower part of the guide.
  • the feed device for adhesive strips shown in the drawings and described below is installed in sealing heads, not shown in the drawing, but previously described, for cardboard sealing machines and consists of a pair of rotatable rollers for feeding the adhesive strip, the roller 1 being driven by a motor and the roller 2 is freely rotating, and from a separating device 3, which is either scissor-shaped or has a fixed and a movable cutting part, which is mounted on bearings in the horizontal direction.
  • the feed device further comprises a guide 4 at its entrance, which in the present case consists of a guide plate 5 with two U-shaped hooks 6 arranged horizontally, parallel and opposite one another on it, wel che are mutually adjustable in order to delimit an opening width corresponding to the adhesive tape used, and their adjustment is done by loosening and then tightening a nut screw 7, the screw thread of which is attached to a vertical support and guide plate 8 against which the plate 5 presses the hooks 6 .
  • a guide 4 at its entrance which in the present case consists of a guide plate 5 with two U-shaped hooks 6 arranged horizontally, parallel and opposite one another on it, wel che are mutually adjustable in order to delimit an opening width corresponding to the adhesive tape used, and their adjustment is done by loosening and then tightening a nut screw 7, the screw thread of which is attached to a vertical support and guide plate 8 against which the plate 5 presses the hooks 6 .
  • the vertical plate 8 has cutouts or slots for receiving and guiding the hooks 6. It is bent outwards at its upper end away from the adhesive strip to be inserted, so that it is easier to insert, the adhesive side 9a of the strip being opposite the surface of the plate 8 for a large part of its way through the feeding device.
  • the plate 8 is between two parallel, opposing support members, e.g. attached to the carrier 10.
  • the plate 8 has transversely arranged wings 11 which reach through the recesses of the supporting part in question and are riveted to the outside thereof.
  • the support parts are pivotally mounted about an axis 12, one of which is retained by a locking pin 13 attached to the housing body 14 of the feed device, which holds both supports 10 together with the parts attached to them.
  • a locking device 15 can be attached - shown in dashed lines in the drawing - the actuating part of which is pressed gently by a weak spring against the strip 9 resting on the plate 8, in such a way that the strip, if it should throw itself - 1, because in the lower part this would be reversed - by means of a lever of the locking device 15 by a slight pivoting movement, it would be strongly pressed against the plate, thus precluding a movement oriented in the opposite direction to the normal, which is the case with the upper supply device down and in the case of the bottom would be up.
  • a U-shaped support part 17 is articulated on the axis 16, in which the roller 2 is rotatably mounted, the support part 17 in turn being connected to a lever mechanism 18 - see FIGS. 1 and 2 - which is suitable Instantly a non-positive connection or separation of the roller 2 and the motor roller 1 causes - in accordance with the function of the feeder described below.
  • the freely rotating roller 2 has a concave outer surface line which bears on the adhesive side 9a of the adhesive strip 9 as long as the feed device is in operation. It can be made of plastic, metal or another suitable material.
  • the motor roller 1 has a convex outer surface line, the shape of which is complementary to that of the roller 2. It can be made of plastic, metal or another suitable material. In this way, the adhesive strip 9 is gently shaped as it passes between the two rollers 1 and 2 and simultaneously conveyed through the feed device.
  • the motor roller 1 has an engaging part, e.g. the flat pin 19 which engages in a recess of complementary shape in an axis 20 which is mounted on bearings in the housing 21 of the closing head and which in turn is connected to a motor which causes the axis to rotate at the appropriate moment, i.e. during the corresponding operating phases within the functional cycle of the feed device.
  • the motor roller 1 can have a handy cord 22, preferably in its central part, although this can extend over the entire working surface. The adhesive strip 9 can thus be better grasped and any slipping between the roller and the strip can be prevented.
  • a guide 23 is attached behind the separating device 3, specifically in the upper feed device at the bottom and in the lower one at the top.
  • the guide 23 assigned to the upper feed device is shown in detail in FIGS. 3 and 4 and consists of an L-shaped support profile 24, the horizontal part of which on the housing 14 is e.g. by means of fastening screws passing through recesses or indentations 25, e.g. Screw 26 is attached.
  • the profile part 24 has two, in the example shown, welded on the inside of the profile part 24, symmetrical angle parts 27 and 28, the sides of which form a somewhat larger angle than 90 ° and in this way form a guide part between themselves and the profile part 24, the first section of which in The top view has a C-shaped cross-section, the convex base of which rests on the non-adhesive side of the adhesive strip 9, and the bent edges of which, each hook-shaped, encompass the edges of the adhesive strip in the longitudinal direction.
  • This guide part 23 can of course be designed in any other usual way, but must always have a first section with a C-shaped cross section, the convex base of which is in contact with the non-adhesive side of the strip 9 and the edges of which grip around the strip edge in the longitudinal direction.
  • the first section of the guide 23 is followed by a second, flat section 29, which supports the adhesive strip on its non-adhesive side and is slightly bent outwards at its free end in order to facilitate the strip's exit from the feed device.
  • the moistening is exactly opposite the second, flat section 29 of the guide 23 direction 30 attached, which wets the adhesive side 9a of the adhesive strip 9, which abuts the second, flat portion 29 of the guide 23.
  • the strip 9b emerges from this and thus from the feed device with its wetted and thus ready-to-glue side, in order first to be gripped by the motor roller 1 and the freely rotating roller 2 and then to the normally vertical side of the cardboard to be glued by the freely rotating rollers Lever pairs of the relevant closing head, in which the described feed device is located, to be pressed.
  • the feed device is in turn housed in the upper and / or lower part of the box sealing machine in question.
  • the tape is automatically taken along by its movement in the longitudinal direction below and above the respective sealing heads of the carton closing machine, whereby the motor roller 1 is automatically put out of operation and the roller 2 is free the former lifts off and thus allows the adhesive tape to pass freely between the two rollers.
  • the moistening device 30 can - as can be seen from the drawing - consist of a brush 31 or the like, which is suitably mixed with a liquid, e.g. Water that is soaked, which comes from a container 32.
  • the brush 31 can be mounted in a regulating device 33, shown schematically in FIG. 1, by means of which the brush edge 31 can be approximated to the adhesive side 9a of the adhesive strip 9 to be moistened.
  • the humidifier can be conventional, e.g.
  • rollers or the like wherein when using rollers, a pair of rollers is normally used, of which at least one roller is porous in order to more easily transport the liquid used for moistening the adhesive side from the container to the adhesive strip, and at least one roller can be motor-driven, whereby for In this case, a device can be provided which allows the rollers to rotate in one direction only, in order to prevent the adhesive tape from being thrown out of the web by the force of gravity of the rotating rollers after a tensile force has been exerted thereon to force it on Attach cardboard.
  • Means for heating the wetting liquid can also be provided in the container.
  • the regulating device for the brush or for the dampening rollers can also be of any other conventional type.
  • the guide 23 of the lower feed device is shown, the same reference numerals being used for the same elements as in FIGS. 3 and 4, with the only exception that the upper guide of the lower feed device in the Difference to the lower guide of the upper feed device shown in Fig. 1 is mounted upside down.
  • the now upper guide 23 of the lower feed device (not shown in the drawing) preferably has in its second section in the vicinity of the dividing line between the two sections a transverse incision 34 (FIG. 7 corresponding to a plan view according to X of FIG. 5), which on its Ends ends in this case in a circular arc and thus forms a transverse tongue 36, which is bent such that its free end protrudes from the strip 9.
  • the liquid possibly remaining in the flat section 29 for guiding the adhesive strip 9, which comes from the moistening device located upstream in the passage of the adhesive strip, can be separated off via the tongue 36.
  • the liquid possibly remaining in the second, flat section is simply transported downward and thus outwards by gravity, due to the protruding end of the second, flat section 29 (see Fig. 1) is derived away from the adhesive tape.
  • the feed device described is easily degradable, since the housing is provided with a flange 37 through which the shaft 38 of a knob 39 passes; the shaft 38 can be screwed into a screw thread of the housing 14 and thereby presses the flange against two horizontal, parallel rods 40, which in turn are fixed in the frame 21 of the capping head. The rods are in turn also fixed between the flange 37 and the recesses provided for receiving them in this part of the housing 14.
  • the removable attachment of the feed device in the frame of the closing head can be done mechanically in any other conventional way and is not part of the invention.
  • the adhesive tape can be fed in manually by manually guiding the box to the beginning of the adhesive zone, or automatically; It should be noted in this context that there are also so-called semi-automatic carton sealing machines, in which the cartons are manually transported to the adhesive zone and the top lid of the carton is always closed manually, whereas in the automatic machines these operations are carried out automatically without any manual intervention take place: the feed device described can therefore be applied to this and also to simpler machines.
  • the feed device according to the invention can also be used with capping heads which e.g. operate via lever mechanisms or a fully mechanical system without a motor, or by means of detectors which control the entry and exit of the boxes and automatically switch the feeding of the adhesive strip; the feed device can also be used in sealing heads with automatic advancement of the adhesive tape in the length provided and set by the user, as can a mechanical coupling between the pressure rollers which apply the adhesive tape to the relevant carton and the motor roller 1 of the feed device described can.
  • the gentle curvature in the transverse direction of the strip gives it the necessary stiffness to ensure a perfect passage through the feed device to the pressure rollers, without, on the other hand, preventing the strip from arriving flat in the wetting zone and thus the adhesive side of the strip being even and clean can be moistened.
  • carton closing machines in the closing heads of which feed devices such as the one just described are attached - one at the top and the other at the bottom - on the table on which the cartons to be closed and the already closed cartons move, can have a lever mechanism with electrical contacts , which actuate a timer, which in turn controls the drive of the motor roller for a predetermined, controllable period of time, which is adjustable according to the desired strip start length for pasting the vertical, front side of the box in question.
  • the adhesive strip is always deformed in the manner described, while in known feed devices a section of the strip, in particular the initial one, always remains undeformed, which corresponds to the partial section or the end piece which lies between the pair of rollers and the separation device for the adhesive tape is in the case of already glued cartons. This part or section corresponds to the beginning of a new feed to the next box to be glued.
  • all of the disadvantages and damage which were mentioned in the course of this patent description and which are eliminated by the feed device according to the invention arise on this non-profiled section which constitutes the head or the starting piece of the strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
EP91106072A 1990-06-13 1991-04-16 Dispositif d'alimentation en ruban adhésif pour tête de fermeture et machine de fermeture pour cartons Withdrawn EP0465771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9001865U 1990-06-13
ES9001865U ES1014302Y (es) 1990-06-13 1990-06-13 Dispensador de cinta engomada, para cabezales de maquinas precintadoras de cajas.

Publications (1)

Publication Number Publication Date
EP0465771A1 true EP0465771A1 (fr) 1992-01-15

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Application Number Title Priority Date Filing Date
EP91106072A Withdrawn EP0465771A1 (fr) 1990-06-13 1991-04-16 Dispositif d'alimentation en ruban adhésif pour tête de fermeture et machine de fermeture pour cartons

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EP (1) EP0465771A1 (fr)
ES (1) ES1014302Y (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579329A1 (fr) * 1992-07-17 1994-01-19 Augusto Marchetti Appareil à coller du papier gommé, pourvu d'un accès améioré à la trajectoire du papier
DE19815059A1 (de) * 1998-04-03 1999-10-07 Focke & Co Packung, insbesondere Zigarettenpackung, sowie Verfahren und Vorrichtung zum Herstellen derselben
CN107902469A (zh) * 2017-10-11 2018-04-13 中国建筑材料科学研究总院 胶条码放装置
IT202000000544A1 (it) * 2020-01-14 2021-07-14 Luca Pezzotta Unita' di nastratura per l'umidificazione di nastri in carta gommata
EP4197924A1 (fr) 2021-12-14 2023-06-21 S.I.A.T. SOCIETA' INTERNAZIONALE APPLICAZIONI TECNICHE S.p.A. Unité de rubanage pour bande de papier gomme et machine de fermeture de boîte comprenant ladite unité de rubanage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126299A (en) * 1964-03-24 Carton length controlled tape server
US3466843A (en) * 1967-03-24 1969-09-16 George J Mumper Carton closing and taping machine
DE3314104A1 (de) * 1983-04-19 1984-10-25 Lothar 2400 Lübeck Beeck Verschliesskopf mit einer einrichtung zum zufuehren von nassklebestreifen fuer kartonverschliessmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126299A (en) * 1964-03-24 Carton length controlled tape server
US3466843A (en) * 1967-03-24 1969-09-16 George J Mumper Carton closing and taping machine
DE3314104A1 (de) * 1983-04-19 1984-10-25 Lothar 2400 Lübeck Beeck Verschliesskopf mit einer einrichtung zum zufuehren von nassklebestreifen fuer kartonverschliessmaschinen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579329A1 (fr) * 1992-07-17 1994-01-19 Augusto Marchetti Appareil à coller du papier gommé, pourvu d'un accès améioré à la trajectoire du papier
US5478430A (en) * 1992-07-17 1995-12-26 Marchetti; Augusto Gummed paper taping unit with improved access to the path of the paper
DE19815059A1 (de) * 1998-04-03 1999-10-07 Focke & Co Packung, insbesondere Zigarettenpackung, sowie Verfahren und Vorrichtung zum Herstellen derselben
CN107902469A (zh) * 2017-10-11 2018-04-13 中国建筑材料科学研究总院 胶条码放装置
CN107902469B (zh) * 2017-10-11 2024-05-28 中国建筑材料科学研究总院 胶条码放装置
IT202000000544A1 (it) * 2020-01-14 2021-07-14 Luca Pezzotta Unita' di nastratura per l'umidificazione di nastri in carta gommata
EP3854737A1 (fr) * 2020-01-14 2021-07-28 Luca Pezzota Unité d'enrubannage pour mouiller une bande de papier gommé
EP4197924A1 (fr) 2021-12-14 2023-06-21 S.I.A.T. SOCIETA' INTERNAZIONALE APPLICAZIONI TECNICHE S.p.A. Unité de rubanage pour bande de papier gomme et machine de fermeture de boîte comprenant ladite unité de rubanage

Also Published As

Publication number Publication date
ES1014302Y (es) 1991-09-16
ES1014302U (es) 1991-03-01

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