EP3459868A1 - Haubmaschine mit system für einfache wartung - Google Patents
Haubmaschine mit system für einfache wartung Download PDFInfo
- Publication number
- EP3459868A1 EP3459868A1 EP18196033.7A EP18196033A EP3459868A1 EP 3459868 A1 EP3459868 A1 EP 3459868A1 EP 18196033 A EP18196033 A EP 18196033A EP 3459868 A1 EP3459868 A1 EP 3459868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- cart
- frame
- uprights
- stretch
- 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.)
- Granted
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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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
- B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads
-
- 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
- B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
- B65B59/001—Arrangements to enable adjustments related to the product to be packaged
Definitions
- the present invention relates to the field of machines for packaging pallets.
- a machine which is referred to as stretch hood machine, i.e., configured to cover a stack of articles arranged on pallets with a hood of stretchable tubular film adapted to protect and stabilize said articles.
- Stretch hood machines for packaging pallets by a hood of stretchable tubular film are known from the state of the art.
- Said film is fitted on products arranged on pallets in order to stabilize the pallet, making it transportable, and in order to protect the products against external agents, especially during the transport and storage steps.
- the products can be of different types, from food or beverage products, both in bulk and packaged in cardboard boxes or in packs, to cement bags, bags of food products, bricks, or, again, household appliances, buckets, cans of paints, etc.
- the action of the machine is based on the use of an elastic stretchable tubular film configured in coils, where the film exhibits a planar surface on its two long sides, and a bellowslike packed part on its short sides.
- the machines currently available for packaging pallets by a hood of stretchable tubular film comprise a frame, having a prevailing vertical development, on which:
- the film is taken by unwinding it from a warehouse that can be integrated in the frame or independent, and which generally comprises at least a coil of stretchable film.
- the film feeding device provides for taking a stretch of stretchable tubular film from said warehouse.
- the cutting and welding device is positioned, which is arranged to cut and weld the film, so as to obtain a hood that is closed at one end; for some applications, the upper welding is not carries out, in fact generating a tubular hood open at the two ends.
- the suctioning device located below the cutting and welding device, is configured to open the lower flaps of the stretchable tubular film so as to allow the insertion of the positioning device, which in turn grasps said lower flaps stretches them apart beyond the size of the pallet and lowers the same hood, fitting it on the underlying stack of material to be protected.
- the film positioning device must be able to adjust to the height of the stack of products to be packaged and must be able to carry out the insertion of the hood along the whole stack of products to be packaged, therefore it is movable in vertical direction along the frame by a suitable motor control.
- This solution involves the need to arrange stairs and access boardwalks to the upper part of the frame in order to allow the maintenance operations to the same devices, in addition to allow the machine managing operations required for the regular operation thereof, such as, for example, during the film coil change steps.
- a second solution aims to reduce these maintenance and managing difficulties, allowing the operator a more functional, rapid and safe intervention.
- Said second solution provides for that the feeding, cutting, welding and suctioning devices, or only part of them, are contained in a cart that is vertically movable along the frame.
- the former US 7,913,476 provides for a winding device for articles stored on a pallet or the like, with a tubular film, where a feeding device and a positioning device are arranged inside a frame with four uprights.
- the positioning device is configured to grasp the tubular film and to fit it onto the articles located in the lower part of the frame and it moves vertically upwardly and downwardly inside said frame.
- the feeding device installed on a cart that further comprises a cutting, welding and suctioning device to generate and feed the hood inside the frame with four uprights;
- Said feeding device operates in association with the positioning device.
- the movement of the cart is preferably passive, i.e., it is moved by the aid of the positioning device.
- the second document US 9,440,756 provides for a device for hooding a stack of objects with a tubular film comprising a warehouse of the tubular film, a frame with two vertical uprights adjacent to the film warehouse and placed side by side to the stack of objects to be hooded; it further provides for a positioning device film, vertically movable along the frame with two uprights, and a feeding device film arranged to be moved vertically along the two uprights, by the aid of the film positioning device.
- the film taken from the warehouse passes through the feeding device film and arrives to the film positioning device to hood the stack of objects.
- the film feeding device is installed on a cart, which further comprises cutting, welding and suctioning means, but it does not comprise movement means of its own; in fact, it can be moved only with the aid of the motorized means that move the film positioning device. In such a manner, the film feeding device and the film positioning device move together.
- a film collecting device arranged between the warehouse and the same feeding device is configured to collect a variable length of film by compensating the length of the film that unwinds following this movement.
- An object of the present invention is to provide to the art an improved stretch hood machine for packaging pallets structurally and functionally devised to overcome one or more of the limitations set forth above with reference to the mentioned prior art.
- a main object of the invention is to develop a stretch hood machine that allows simplifying the work of the operator engaged in control, management and maintenance activities, allowing to access to the main parts the machine in a safer, easier, and more rapid manner, both for those activities necessary to a normal operative cycle, and for the maintenance operations.
- a further object of the invention is also to provide to the art a machine for packaging pallets within the scope of a flexible and quite inexpensive solution.
- an implementation of the present invention provides a machine for packaging pallets comprising a frame with four uprights, a film positioning cart movable according to a vertical direction parallel to the uprights, adapted for grasping a stretch of tubular film at one end and for fitting said stretch of film on the pallet; it further comprises a film preparation cart adapted to be moved according to the vertical direction, in turn comprising a feeding device suitable to take a portion of the tubular film from a warehouse and a translation structure for moving the feeding device according to a direction orthogonal to the uprights, from a working position inside the frame to a maintenance position outside the frame and facing towards the same side of the warehouse.
- the operator needs not to stick out inside the structure and he/she is not hindered by a number of other components that are present inside the frame.
- the accessibility to the feeding device is very important not only in the maintenance steps, but especially during the normal management of the machine duty cycle.
- every time the film coil ends it is necessary to insert the film flap of the new coil in the feeding device so that said flap is held in the proper working position. For this reason, the translation towards the film warehouse is particularly advantageous.
- a further advantage is given by the fact that important parts of the machine are made accessible, while keeping a solid and robust structure with four uprights, which allows working even with very high pallets.
- Another aspect of the invention is to provide a solution where the film preparation cart is preferably moved vertically on the frame by the film positioning cart, the latter being provided with movement elements.
- the film preparation cart comprises at least a coupling device configured to mechanically and operatively associate it to the film positioning cart.
- a stretch hood machine 1 for packaging pallets 200 is represented, which provides for a frame 10 on which all the devices necessary for the operativity of the machine are installed.
- Function of the machine is to generate a hood by the use of the elastic tubular film 100 and to fit it on the pallet 200, together with the products to be packaged in order to ensure the stability thereof for the transport and protection against external agents.
- the frame 10 comprises four uprights 11 which develop vertically according to a vertical direction Y orthogonal to the ground.
- the four uprights 11 are connected to the ground by a pedestal 12 on which a conveyor 14 rests, which is configured to receive and transfer according to a forward direction Z a stack of articles to be packaged (not shown) and simply referred to as pallet 200 herein below.
- said four uprights 11 are further connected in the upper end part thereof by a ring 13 configured to stiffen the structure of the frame 10 in order to promote the transport thereof and in order to decrease the vibrations during operation.
- the stretch hood machine 1 is fed by a warehouse 2 configured to hold at least a coil of tubular film 100.
- the tubular film 100 is wound in the coil in a flattened configuration.
- the tubular film 100 is substantially arranged in two layers that are overlapping and joined laterally by a bellowslike-folded stretch of film.
- the dimensions of the film perimeter vary as a function of the perimeter to be packaged, as well as the film thickness may vary generally from 25 to 180 microns as a function of the packaging/stability characteristics that are sought.
- the stretch hood machine 1 comprises two carts, i.e. a film positioning cart 4 and a film preparation cart 3.
- the film positioning cart 4 is adapted for grasping the stretch of tubular film 100 at one end and for fitting said stretch of film 100 on a stack of articles; on the other hand, the film preparation cart 3 is arranged to take a portion of tubular film 100 from the warehouse 2, to cut and weld it at a predetermined section of said tubular film 100, beside being arranged to open the lower flaps thereof.
- the film preparation cart 3 is always located above the film positioning cart 4.
- the uprights 11 of the frame 10 are configured to allow the sliding of the two film preparation 3 and film positioning 4 carts.
- the film preparation cart 3 comprises a feeding head 5, welding elements 8, cutting elements 9, and suctioning devices 7.
- the feeding head 5 provides for taking a stretch of stretchable tubular film 100 by unwinding from the warehouse 2.
- Said feeding head 5 preferably comprises a pair of rubber rolls 51 that, by rotating about their axis, perform the function of pulling the tubular film 100 concordant with the rotation direction of the same rolls, unwinding the amount of film 100 required to package the stack of articles.
- the welding elements 8 are arranged below the feeding head 5.
- the welding elements 8 have the function of closing at one end a stretch of tubular film 100, so as to obtain a hood shape and act on the tubular film 100, which is still in the flattened configuration in two overlapping layers.
- the welding elements 8 comprise a pair of welding bars, at least one of which can be heated to a melting temperature of the tubular film.
- the pair of welding bars is movable between an operative position, in which they are approached each other to clamp a section of the tubular film, and a release position, in which they are moved away from each other.
- the cutting elements 9 that cooperate with the welding elements 8 to cut the portion of tubular film 100 above the welding separating it from the rest of the coil are located between the feeding head 5 and the welding elements 8.
- the film preparation cart 3 provides for, below the welding means 8, the suctioning devices 7.
- Such suctioning devices 7 are arranged opposite, in order to be able to come into contact with the two sides of the tubular film 100 and are configured to grasp the lower flaps of said tubular film 100.
- Said suctioning devices 7 carry out a first approaching to the tubular film 100, followed by a moving away; said moving away has the aim to open the lower flaps of tubular film 100, due to its special lateral bellowslike configuration.
- the film positioning cart 4 vertically movable in the direction Y, during the operation of the stretch hood machine 1 is positioned below the film preparation cart 3.
- Said film positioning cart 4 comprises grasping pliers 41, preferably four of them, and film collecting elements 42.
- the pliers 41 approach each other moving according to two directions; the direction Z and a direction X, orthogonal to the above-defined vertical Y and forward Z directions.
- the film positioning cart 4 provides for its lifting in direction Y, approaching the film preparation cart 3, so that said pliers 41 can insert inside the lower flaps of the tubular film 100, kept open by the suctioning devices 7.
- the film collecting elements 42 come into contact with the tubular film 100 to recover all the hood taken by the feeding head 5 and already cut and welded in the film preparation cart 3.
- an extension step begins, in which the pliers 41 stretch apart moving according to the directions X and Z so as to extend the hood to be able to fit it onto the underlaying products.
- the extension step continues until obtaining a film having a larger size than the perimeter of the pallet 200 to be treater. Subsequently, the descent of the film positioning cart 4 begins, during which the film collecting elements 42 release the hood on the pallet 200.
- the hood is completely released from the pliers 41 and fitted on the stack of articles.
- the lower cart 4 rises vertically to allow the exit of the hooded pallet 200 and to be able to carry out a subsequent duty cycle.
- the film positioning cart 4 vertically translates according to the direction Y, while the film preparation cart 3 remains in a fixed position, preferably in the upper part of the frame 10, which will be referred to as fixed position A.
- the film preparation cart 3 is configured to be able to translate in vertical direction Y by sliding along the uprights 11.
- the movement of the film preparation cart 3 is preferably passive, i.e., it is not provided with its own movement means, instead it translates by the aid of the film positioning cart 4.
- the working position A is not univocal, i.e., the film preparation cart 3 can be positioned in a fixed manner, at different heights along the uprights 11, in order to improve the productivity of the stretch hood machine 1.
- the movement of the film from the film preparation cart 3 to the film positioning cart 4 can be carried out at a height that is near to that of the pallet 200, thus reducing the overall stroke that the film positioning cart 4 has to carry out.
- the movement of the film preparation cart 3 along the uprights 11 preferably occurs until reaching a preferably completely low position, which will be referred to as the maintenance position B.
- Said maintenance position B is reached both during the maintenance steps and especially during the normal management of the machine.
- the normal management of the stretch hood machine 1 provides for inserting in the warehouse 2 a new coil every time that, after a number of duty cycles, the film coil ends; to carry out such coil change operation, it is necessary to insert the film flap of the new coil in the feeding head 5 so that said flap is held in the proper working position.
- the present invention provides for lowering in the vertical direction Y the film preparation cart 3 and consequently the feeding head 5 mechanically connected thereto, preferably up to the maintenance position B.
- Said maintenance position B allows to bring the feeding head 5 to a height that is more accessible by the operator, thus facilitating the carrying out of the coil change or maintenance operations.
- the film preparation cart 3 comprises a coupling device 31 configured to mechanically and operationally associate said film preparation cart 3 to the film positioning cart 4. In this manner, by moving the film positioning cart 4 in the vertical direction Y, the film preparation cart 3 which has been made integral thereto by the coupling device 31 is also translated.
- the coupling device 31 preferably provides for two positions:
- Object of the present invention is to allow an optimal access to the feeding head 5 by the operator; for this reason, the stretch hood machine 1, in addition to the lowering of the feeding head 5 to a suitable height for the operator, provides for translating the feeding head 5 according to the direction X and preferably towards the warehouse 2.
- the film preparation cart 3 comprises a translation structure 6 configured to move the feeding head 5 according to the direction X, from a working position C inside the frame 10 to a maintenance position D outside the frame 10 and facing towards the same side of the warehouse 2.
- the translation structure 6 comprises at least one beam 61 mechanically secured to the film preparation cart 3 which develops inside the frame 10 according to the direction X and having such a length as to protrude outside said frame 10 on the side of the warehouse 2.
- Said at least one beam 61 is arranged to accommodate sliding elements 62 for the translation of the feeding head 5.
- the translation structure 6 provides for two beams 61 arranged side-by-side and parallel on which sliding elements 62 are mounted.
- said sliding elements 62 provide for, for example, linear guides 64 and relative ball shoes 65.
- the linear guides 64 are installed on the beams 61, while the ball shoes 65 are installed on the feeding head 5.
- the translation structure 6 comprises movement elements 66 adapted to translate the feeding head 5 along the beam 61.
- the movement elements 66 comprise at least a gearmotor 67 and a transmission element 68 preferably of the flexible type for the translation of the feeding head 5.
- a possible embodiment of the movement elements 66 is represented, in which the transmission element 68 is of the toothed belt and relative pulleys type, among which at least one drive mechanically associated to the gearmotor 67; in this case also, possible variations such as transmission elements 68 of the chain and sprockets, or rack gear type, or other possible solutions for the transmission of motion, are to be intended within the same protection scope of the invention.
- the gearmotor 67 is integral to the translation structure 6 and thus it is in a fixed position with respect to the feeding head 5; possible variations in which the gearmotor is movable, since it is mechanically associated to the feeding head 5, are to be intended as a part of the invention.
- the ring 13 configured to stiffen the frame 10 in the upper part thereof protrudes from the uprights 11 in the direction X and towards the film warehouse 2, so as to contain the outer perimeter of the film preparation cart 3, and in particular to contain the translation structure 6.
- the film preparation cart 3 can exploit the entire height of the uprights 11 for the positioning thereof in the working position A.
- Fig. 4 the working and maintenance step provided for the stretch hood machine 1 that is the subject matter of the present invention are represented.
- the stretch hood machine 1 that is the subject matter of the present invention could provide for the presence of a film retrieval device, which intervenes to collect the stretch of film 100 extended between the warehouse 2 and the feeding head 5 every time said feeding head 5 is lowered.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102017000106655A IT201700106655A1 (it) | 2017-09-22 | 2017-09-22 | Incappucciatore con sistema per facilitare la manutenzione |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3459868A1 true EP3459868A1 (de) | 2019-03-27 |
| EP3459868B1 EP3459868B1 (de) | 2021-05-05 |
Family
ID=61006228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18196033.7A Active EP3459868B1 (de) | 2017-09-22 | 2018-09-21 | Haubmaschine mit system für einfache wartung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3459868B1 (de) |
| IT (1) | IT201700106655A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900024781A1 (it) | 2019-12-19 | 2021-06-19 | Officina Bocedi S R L | Macchina per il rivestimento di pallet |
| ES3004610A1 (es) * | 2024-09-20 | 2025-03-12 | Innova Maqu Industrial S L | Máquina de enfundado de cargas con sistema de mantenimiento |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9006438U1 (de) * | 1990-06-07 | 1990-09-13 | Develog, Reiner Hannen & Cie, Courtelary | Vorrichtung zum Verpacken eines Gutstapels mit einer Stretchfolienhaube |
| EP1574433A1 (de) * | 2004-03-11 | 2005-09-14 | Thimon | Verfahren und Vorrichtung zum Herstellen und Anbringen mit hoher Geschwindigkeit einer Verpackungshaube auf eine palettisierte Ladung |
| US7913476B2 (en) * | 2006-09-15 | 2011-03-29 | Illinois Tool Works Inc. | Wrapping device, detent mechanism for said wrapping device and method for operation thereof |
| US9440756B2 (en) * | 2009-12-21 | 2016-09-13 | Msk-Verpackungs-Systeme Gmbh | Method of and apparatus for wrapping a stack of objects with a film |
| EP3144233A1 (de) * | 2015-09-16 | 2017-03-22 | Officina Bocedi S.R.L. | Maschine zur umhüllung von paletten |
-
2017
- 2017-09-22 IT IT102017000106655A patent/IT201700106655A1/it unknown
-
2018
- 2018-09-21 EP EP18196033.7A patent/EP3459868B1/de active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9006438U1 (de) * | 1990-06-07 | 1990-09-13 | Develog, Reiner Hannen & Cie, Courtelary | Vorrichtung zum Verpacken eines Gutstapels mit einer Stretchfolienhaube |
| EP1574433A1 (de) * | 2004-03-11 | 2005-09-14 | Thimon | Verfahren und Vorrichtung zum Herstellen und Anbringen mit hoher Geschwindigkeit einer Verpackungshaube auf eine palettisierte Ladung |
| US7913476B2 (en) * | 2006-09-15 | 2011-03-29 | Illinois Tool Works Inc. | Wrapping device, detent mechanism for said wrapping device and method for operation thereof |
| US9440756B2 (en) * | 2009-12-21 | 2016-09-13 | Msk-Verpackungs-Systeme Gmbh | Method of and apparatus for wrapping a stack of objects with a film |
| EP3144233A1 (de) * | 2015-09-16 | 2017-03-22 | Officina Bocedi S.R.L. | Maschine zur umhüllung von paletten |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900024781A1 (it) | 2019-12-19 | 2021-06-19 | Officina Bocedi S R L | Macchina per il rivestimento di pallet |
| EP3838771A1 (de) | 2019-12-19 | 2021-06-23 | Officina Bocedi S.R.L. | Maschine zum einwickeln von paletten |
| US11370569B2 (en) | 2019-12-19 | 2022-06-28 | Officina Bocedi S.R.L. | Machine for wrapping pallets |
| ES3004610A1 (es) * | 2024-09-20 | 2025-03-12 | Innova Maqu Industrial S L | Máquina de enfundado de cargas con sistema de mantenimiento |
| WO2026062301A1 (es) * | 2024-09-20 | 2026-03-26 | Innova Maquinaria Industrial, S.L. | Máquina de enfundado de cargas con sistema de mantenimiento |
Also Published As
| Publication number | Publication date |
|---|---|
| IT201700106655A1 (it) | 2019-03-22 |
| EP3459868B1 (de) | 2021-05-05 |
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