EP3826925A1 - Schrumpftunnel zum aufschrumpfen von schrumpffolien auf verpackungen oder verpackungseinheiten - Google Patents
Schrumpftunnel zum aufschrumpfen von schrumpffolien auf verpackungen oder verpackungseinheitenInfo
- Publication number
- EP3826925A1 EP3826925A1 EP19737505.8A EP19737505A EP3826925A1 EP 3826925 A1 EP3826925 A1 EP 3826925A1 EP 19737505 A EP19737505 A EP 19737505A EP 3826925 A1 EP3826925 A1 EP 3826925A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- lubricant
- transport means
- transport
- roller
- 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.)
- Pending
Links
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
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
- B65B53/063—Tunnels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/02—Lubricating devices
-
- 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
- B65B2210/00—Specific aspects of the packaging machine
- B65B2210/10—Means for removing bridges formed by the material or article, e.g. anti-clogging devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/02—Lubricating devices
- B65G45/08—Lubricating devices for chains
Definitions
- the invention relates to a shrink tunnel for shrinking shrink films onto packaging or packaging units according to the
- Shrink tunnel for shrinking shrink films onto products such as B. on packaging units for example, to form containers from several individual packages or packaging units are in
- Container handling machines known from the beverage industry.
- Shrinking is preferably carried out by a stream of hot air or hot gas and is, for example, laterally onto the respective one which has already been covered with the shrink film
- Packaging unit applied to shrink the shrink film onto the packaging unit. Furthermore, the shrink gas flow is also directed onto the underside of the product wrapped with the shrink film in order to seal the overlapping ends of the shrink film there, i. H. to weld or glue.
- Electrodes such as E.g .: transport belts in the form of wire mesh belts used. These wire mesh belts form a closed loop (loop) and are preferably driven continuously. The upper part or the upper half of the wire mesh belt moving in the transport direction moves back through the hot zone - the actual shrink zone - of the shrink tunnel and the back strand of the wire mesh belt moving against the transport direction moves back below the hot zone of the shrink tunnel.
- shrink film usually PE film (polyethylene film) - initially only loosely wrapped containers, transported through the hot shrink zone, causing the shrink film to shrink so much that it clings tightly to the container.
- PE film polyethylene film
- Conveyor belt In order to keep this warming within tolerable limits, the conveyor belt on the back run is actively cooled.
- the conveyor belt has a temperature of, for example, 80 to 85 ° C. before it enters the shrink zone. During its passage through the hot shrink zone, the conveyor belt often heats up by 10 to 20 ° C, so that the conveyor belt eventually
- Shrink film on the conveyor belt viewed in practice as very disadvantageous.
- Spraying lubricant An oil that is sprayed onto the conveyor belts using compressed air is very often used as a lubricant. The oil used is used to prevent the shrink film from sticking to or on the hot metal surfaces of the conveyor belt.
- a disadvantage of this known solution is the very uneven distribution of the oil on the surface of the conveyor belt, so that sticking of the shrink film to the conveyor belt cannot be avoided. Furthermore, the spraying or the so-called overspray (proportion of the oil to be sprayed that does not get onto the conveyor belt, but in the form of spray mist into the Environment escapes) a very large loss of lubricant. This overspray also contaminates large areas around the shrink tunnel.
- Means of transport of a transport device avoids and thus enables trouble-free and uninterrupted shrinking of shrink films on packaging or packaging units.
- a corresponding lubrication device for use in a shrink tunnel is the subject of the independent claim 15.
- Lubricant is the subject of the subordinate patent claim 18.
- the respective subclaims relate to particularly preferred embodiment variants of the invention.
- the invention relates to a shrink tunnel for shrinking a shrink film onto packaging or packaging units along a transport direction, comprising at least one transport device with a belt-like transport means. It is understood that the shrink tunnel according to the invention is part of a system or more precisely, part of a
- the belt-like transport means has a transport area for transporting the packaging or packaging units along the transport direction through the Shrink tunnel and a return area for returning the band-like
- the belt-like transport means thus forms a kind of closed loop or loop and is advantageously driven continuously.
- the transport area of the belt-like transport means also known in specialist circles as the back, is moved through the hot zone - the actual shrinking zone - of the shrinking tunnel and the
- Return area for returning the belt-like means of transport also known in specialist circles as a return run, returned below the hot zone of the shrink tunnel.
- Lubricant is provided on the belt-like transport means in the return area of the belt-like transport means.
- the lubricant to be applied to the belt-like transport means is particularly preferably an oil.
- the oil is particularly preferred
- the shrink tunnel has at least one lubricating device for uniformly applying a lubricant to the belt-like transport means at least one roller rotating about an axis. It is understood that the at least one
- Lubrication device can also have more than one roller rotating about an axis, without thereby departing from the inventive concept.
- the at least one lubrication device has one
- Liquid container which is designed to hold the lubricant and into which at least part of the at least one roller protrudes, such that when the at least one roller rotates about the axis, part of the lubricant on the adheres to at least one roll and is transferable to the band-like transport means upon contact with the latter.
- volume content of the lubricant in the liquid container an amount of the lubricant transferred to the belt-like transport means can be determined.
- the amount of the lubricant transferred to the belt-like transport means can be influenced by the fleas of the fill level or by the volume content of the lubricant in the liquid container. For example, with a higher fill level or a larger volume content of the lubricant in the liquid container, more
- the level or the volume content of the lubricant in the liquid container is controlled to decrease to such an extent that the at least one roller is only minimal or even at all is no longer in contact with the lubricant. This is advantageous if, for example, the belt-like transport means still contains lubricant from a previous application.
- the liquid container has an electropneumatic one
- Lubrication pump connected, by means of which the liquid container can be automatically refilled with the lubricant.
- a PLC control for controlling the refilling of the is then advantageous
- Lubricant is provided in the liquid container, through which the refilling of the lubricant with the lubrication pump in the liquid container can be carried out fully automatically.
- the PLC control is different
- Liquid container adjustable and can be stored in this.
- Level control device for monitoring and / or regulating the level of the lubricant in the liquid container is provided, so that a controlled and / or regulated refilling or lowering of the lubricant can be carried out in or out of the liquid container.
- Liquid container is provided, the refilling of the lubricant via a supply line and the lowering of the lubricant via a return line.
- a width of the at least one roller corresponds to at least one width of the belt-like transport means. This ensures that the lubricant is applied to the entire width of the belt-like transport means - provided that the at least one roller is permanently in contact with the surface of the horizontally moving belt-like transport means to be wetted.
- a force acts on the at least one roller in such a way that the at least one roller is pressed against the belt-like transport means, so that when the belt-like conveyor moves Means of transport as well as the at least one role is set in motion.
- the at least one roller is now permanently pressed against the belt-like transport means with a sufficiently large force, the at least one roller is forcibly moved whenever the belt-like transport means moves.
- the at least one roller is driven or moved virtually directly by the belt-like transport means, so that in this case
- the at least one roller is connected to an electromotive drive in the shrink tunnel, so that, for example, the spring arrangement provided in the previous embodiment is not necessary.
- both a force, as a result of the prestressed spring arrangement acts on the at least one roller and the at least one roller is also connected to an electric motor drive. This can be particularly advantageous if, for example, the prestressed one
- the electric motor drive would thus be provided as an auxiliary drive. This also prevents a shrinking system from coming to a standstill.
- the at least one roller is covered with a felt material and preferably embodied in a roller shape.
- the belt-like transport means has a metallic surface.
- the belt-like means of transport is one
- the present invention also relates to a lubrication device for use in a shrink tunnel for evenly applying a lubricant to a belt-like transport means of at least one transport device of the shrink tunnel.
- the band-like transport means has a transport area for transporting the packaging or
- the present invention is further characterized in that the lubrication device is provided for uniform application of the lubricant to the belt-like transport means in the return area of the belt-like transport means.
- the at least one lubrication device for uniformly applying a lubricant to the belt-like transport means has at least one roller rotating about an axis. According to yet another advantageous embodiment variant, it is provided that the at least one lubrication device has one
- Has liquid container which is designed to hold the lubricant and into which at least a part of the at least one roller protrudes, such that when the at least one roller rotates about the axis, part of the lubricant adheres to the at least one roller and upon contact with it the belt-like means of transport is transferable to this.
- the present invention also relates to a method for uniformly applying a lubricant to a belt-like transport means of at least one transport device
- the present invention is further characterized in that in the shrink tunnel at least one lubricating device for
- Adhesive means of transport wherein the belt-like means of transport is part of at least one transport device of a shrink tunnel.
- Lubricant losses have this variant compared to the spraying of lubricant which is still customary and known from the prior art, and also has the advantage that no spray mist escapes into the surroundings, so that the surroundings of the shrink tunnel or the entire shrinking system are also clean by means of the invention remains. There is also the danger that the lubricant will
- Spraying into the respiratory tract of an operator of the system is due to the direct Application of the lubricant bypassed by means of the at least one roller on the belt-like transport means, so that there are no longer any health concerns.
- the invention achieves a trouble-free and uninterrupted shrinking of shrink films onto packaging or packaging units in a shrink tunnel.
- Fig. 1 an example of an embodiment of an inventive
- Fig. 2 is an enlarged side view of the invention
- FIG. 3 shows an exemplary embodiment variant of the lubrication device according to FIG.
- FIG. 4 is an enlarged perspective view of the lubricating device according to FIG.
- FIG. 5 shows, by way of example, a further embodiment variant of the lubricating device according to FIG. 1 in a schematic perspective view.
- Identical reference numerals are used in the figures for identical or identically acting elements of the invention. Furthermore, for the sake of clarity, only reference symbols which are necessary for the description of the respective figure are shown in the individual figures.
- FIG. 1 shows an exemplary embodiment variant of a shrink tunnel 1 according to the invention for shrinking a shrink film 3 onto packaging or packaging units 4 along a transport direction TR of a shrinking system 18.
- the same is shown in FIG. 2 in an enlarged side view according to FIG. 1.
- Shrinking is preferably carried out by a stream of industrial air or industrial gas and is applied, for example, laterally to the respective packaging unit 4 which is already covered with the shrink film 3. Furthermore, the shrink gas flow is also directed to the underside of the product wrapped with the shrink film 3 in order to seal the overlapping ends of the shrink film 3 there, although all other shrink-on methods known from the prior art can also be used in the invention.
- the shrink tunnel 1 comprises a transport device 2 with a belt-like transport means 5 and a lubricating device 6 for evenly applying a lubricant 7 (see FIG. 3) to the belt-like transport means 5.
- a transport device 2 with a belt-like transport means 5 and a lubricating device 6 for evenly applying a lubricant 7 (see FIG. 3) to the belt-like transport means 5.
- the belt-like transport means 5 has a transport area 5.1 for transporting the packaging or packaging units 4 along the transport direction TR through the shrink tunnel 1 and a return area 5.2 for returning the belt-like transport means 5 against the transport direction TR, so that the belt-like transport center 5 has a kind of closed loop or Loop forms.
- the lubricating device 6 for evenly applying a lubricant 7 to the belt-like transport means 5 is provided in the return area 5.2, ie in the return run, of the belt-like transport means 5.
- a synthetic oil such as, for example, teflon oil is preferably used here as the lubricant 7, but also others
- FIG. 3 shows a variant embodiment of the lubricating device 6 according to FIG. 1 in a schematic perspective view.
- the lubrication device 6 for evenly applying the lubricant 7 to the belt-like transport means 5 of the transport device 2 here has, for example, a roller 8 rotating about an axis A.
- the roller 8 is preferably covered with a felt material and is roller-shaped.
- Other design variants can also provide more than just one roller 8 for evenly applying the lubricant 7 to the belt-like transport means 5, without thereby departing from the inventive concept.
- the belt-like transport means 5 of the transport device 2 is exposed to high temperatures and a high tensile load in the shrink tunnel 1 (see FIG. 1 or 2), the belt-like transport means 5 preferably has a metallic surface O.
- the belt-like transport means 5 can be a wire mesh belt.
- the lubrication device 6 has a liquid container 9, which is designed to hold the lubricant 7 and into which at least part of the roller 8 protrudes, such that when the roller 8 rotates about the axis A, part of the lubricant 7 adheres to the roller 8 and in contact with the
- a quantity of the belt-like transport means 5 is particularly advantageous as a result of a fleas Fl of a fill level or a volume V of the lubricant 7 in the liquid container 9
- transferred lubricant 7 can be determined. For example, at a higher fill level F1 or a larger volume V of the lubricant 7 in
- Liquid container 9 more lubricant 7 to the belt-like transport means 5 transmitted than at a lower fill level or lower volume V of the lubricant 7 in the liquid container 9.
- an advantageous embodiment provides a force F, such as force F caused by a prestressed spring arrangement, which acts on the roller 8 in such a way that the roller 8 is pressed against the belt-like transport means 5 is so that the roller 8 is also set in motion when the belt-like transport means 5 moves.
- the roller 8 is in this embodiment by the band-like
- the belt-like transport means 5 is preferably pressed by the roller 8 against a rotatable counter roller 17.
- FIG. 4 shows an enlarged perspective view of the lubricating device 6 according to FIG. 3.
- the liquid container 9 see FIG. 3
- liquid container 9 can then be automatically refilled with the lubricant 7 (see also FIG. 3) via the electropneumatic lubrication pump 10.
- a PLC control 11 is then preferred for controlling the refilling of the
- Lubricant 7 is provided in the liquid container 9, through which the refilling of the lubricant 7 with the lubrication pump 10 in the liquid container 9 can be carried out fully automatically.
- the PLC control 11 different time intervals for the fully automatic refilling of the lubricant 7 in the
- Liquid container 9 adjustable and can be stored in this.
- Level monitoring and / or level control device 12 for monitoring and / or regulating the level of the lubricant 7 in the liquid container 9 may be provided.
- Level control device 12 is a controlled and / or regulated refilling or lowering of the lubricant 7 into or out of the liquid container 9 feasible.
- two metering valves 13 are then provided for automatically refilling and / or lowering the lubricant 7 into or out of the liquid container 9, the refilling of the lubricant 7 via a feed line 14 and the lowering of the lubricant 7 via a return line 15 he follows.
- Other embodiment variants of the invention also provide more or less than two metering valves 13.
- FIG. 5 shows a further embodiment variant of the lubricating device 6 according to FIG. 1 in a schematic perspective view.
- an electromotive drive 16 for driving the roller 8 is provided here in addition to a spring arrangement (not shown). This can be particularly advantageous if, for example, the pretensioned spring arrangement at least partially loses its spring force and this first has to be replaced by a new, appropriately pretensioned spring arrangement and a corresponding electromotive drive 16 then sets the roller 8 in motion.
- the electric motor drive 16 is only shown in a greatly simplified manner in the figures.
- the width BR of the roller 8 corresponds at least to the width Bides of the belt-like transport means 5.
- the lubricant 7 (see FIG. 3) can be extended to the entire width Bi of the belt-like means
- This embodiment variant in particular also makes it possible to distribute the lubricant 7 particularly uniformly over large areas of the belt-like transport means 5, so that the shrink film 3 (see FIG. 1 or 2) does not stick or stick to the belt-like transport means 5 is.
- the lubricant 7 with the roller 8 to the belt-like transport means 5 lubricant losses are almost completely avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
- Labeling Devices (AREA)
- Coating Apparatus (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018117842.5A DE102018117842A1 (de) | 2018-07-24 | 2018-07-24 | Schrumpftunnel zum Aufschrumpfen von Schrumpffolien auf Verpackungen oder Verpackungseinheiten |
| PCT/EP2019/067966 WO2020020596A1 (de) | 2018-07-24 | 2019-07-04 | Schrumpftunnel zum aufschrumpfen von schrumpffolien auf verpackungen oder verpackungseinheiten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3826925A1 true EP3826925A1 (de) | 2021-06-02 |
Family
ID=67220795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19737505.8A Pending EP3826925A1 (de) | 2018-07-24 | 2019-07-04 | Schrumpftunnel zum aufschrumpfen von schrumpffolien auf verpackungen oder verpackungseinheiten |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11524805B2 (de) |
| EP (1) | EP3826925A1 (de) |
| CN (1) | CN112469631B (de) |
| DE (1) | DE102018117842A1 (de) |
| WO (1) | WO2020020596A1 (de) |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670069A (en) * | 1949-11-17 | 1954-02-23 | William J Dobkin | Apparatus for lubricating conveyer belts |
| US2548739A (en) * | 1949-12-23 | 1951-04-10 | Peck S Products Company | Apparatus for applying lubricant to the surface of an endless conveyer |
| US2720941A (en) * | 1952-09-26 | 1955-10-18 | Knudsen Creamery Co Of Califor | Conveyor chain lubricators |
| US3456578A (en) * | 1967-12-14 | 1969-07-22 | William Pinsly | Automatic apparatus for cooking food |
| US5337884A (en) * | 1993-08-10 | 1994-08-16 | Simco/Ramic Corporation | Lubrication system for a conveyor belt |
| US6689180B1 (en) * | 2002-11-14 | 2004-02-10 | Benison & Co., Ltd. | Hot air flow control device of heat-shrinking film packaging machine |
| US7155876B2 (en) * | 2003-05-23 | 2007-01-02 | Douglas Machine, Inc. | Heat tunnel for film shrinking |
| GB0325635D0 (en) * | 2003-11-04 | 2003-12-10 | Mcarthur Colin | Lubricating method and apparatus |
| ITMI20052260A1 (it) * | 2005-11-25 | 2007-05-26 | Sunbird Investments Ltd | Convogliatore e procedimento di lubrificazione di un nastro trasportatore di un convogliatore per bottiglie o contenitori in genere |
| US20070137937A1 (en) * | 2005-11-29 | 2007-06-21 | Guillermo Citro | Conveyor lubricating apparatus |
| DE102006036590A1 (de) * | 2006-08-04 | 2008-02-07 | Khs Ag | Verfahren zum Aufschrumpfen einer Schrumpffolie auf Verpackungen sowie Vorrichtung zum Durchführen des Verfahrens |
| BE1017290A6 (nl) * | 2006-09-13 | 2008-05-06 | Turck Pieter | Transportbaan en werkwijze voor het smeren ervan. |
| US7811084B2 (en) * | 2008-01-25 | 2010-10-12 | Fu-Chuan Huang | Steam shrink oven |
| DE102008053715A1 (de) * | 2008-10-29 | 2010-05-12 | Khs Ag | Transportsystem |
| CN102020033A (zh) * | 2009-09-15 | 2011-04-20 | 上海永冠胶粘制品有限公司 | 高温收缩炉 |
| US20110067978A1 (en) * | 2009-09-22 | 2011-03-24 | Geneva Carman | Apparatus for cleaning conveyor belt |
| PL3411317T3 (pl) * | 2015-02-02 | 2021-04-06 | Chp N.V. | Wyposażenie do smarowania na sucho taśmy przenośnika |
| DE102015105660A1 (de) * | 2015-04-14 | 2016-10-20 | Bvm Brunner Gmbh & Co. Kg Verpackungsmaschinen | Transportvorrichtung |
| CN206171972U (zh) * | 2016-11-22 | 2017-05-17 | 浙江鼎业机械设备有限公司 | 一种热收缩机 |
-
2018
- 2018-07-24 DE DE102018117842.5A patent/DE102018117842A1/de active Pending
-
2019
- 2019-07-04 WO PCT/EP2019/067966 patent/WO2020020596A1/de not_active Ceased
- 2019-07-04 EP EP19737505.8A patent/EP3826925A1/de active Pending
- 2019-07-04 CN CN201980048996.4A patent/CN112469631B/zh active Active
-
2021
- 2021-01-21 US US17/154,385 patent/US11524805B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018117842A1 (de) | 2020-01-30 |
| US11524805B2 (en) | 2022-12-13 |
| CN112469631B (zh) | 2023-05-02 |
| WO2020020596A1 (de) | 2020-01-30 |
| CN112469631A (zh) | 2021-03-09 |
| US20210139178A1 (en) | 2021-05-13 |
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