EP2631186B1 - Device for thermosealing waste - Google Patents
Device for thermosealing waste Download PDFInfo
- Publication number
- EP2631186B1 EP2631186B1 EP20130000694 EP13000694A EP2631186B1 EP 2631186 B1 EP2631186 B1 EP 2631186B1 EP 20130000694 EP20130000694 EP 20130000694 EP 13000694 A EP13000694 A EP 13000694A EP 2631186 B1 EP2631186 B1 EP 2631186B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- severing
- sensor
- tube section
- unit
- 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.)
- Active
Links
- 239000002699 waste material Substances 0.000 title claims description 26
- 238000003466 welding Methods 0.000 claims description 123
- 230000005855 radiation Effects 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 10
- 230000032258 transport Effects 0.000 claims 4
- 238000000926 separation method Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 9
- 239000011888 foil Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 TeflonĀ® Polymers 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000002458 infectious effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000010891 toxic waste Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000010781 infectious medical waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010816 packaging waste Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/04—Refuse receptacles; Accessories therefor with removable inserts
- B65F1/06—Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks
- B65F1/062—Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks having means for storing or dispensing spare bags
-
- 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
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
- B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
- B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
-
- 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
- B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
- B65B67/12—Sack holders, i.e. stands or frames with means for supporting sacks in the open condition to facilitate filling with articles or materials
- B65B67/1266—Sack holders, i.e. stands or frames with means for supporting sacks in the open condition to facilitate filling with articles or materials specially adapted for storing or dispensing sacks from a supply
- B65B67/1277—Sack holders, i.e. stands or frames with means for supporting sacks in the open condition to facilitate filling with articles or materials specially adapted for storing or dispensing sacks from a supply for dispensing flexible tubular material gathered up in the shape of a ring
-
- 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
- B65B9/15—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 stored on filling nozzles
-
- 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
- B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
- B65B67/12—Sack holders, i.e. stands or frames with means for supporting sacks in the open condition to facilitate filling with articles or materials
- B65B2067/1283—Means for gathering, closing or sealing the sacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/14—Other constructional features; Accessories
- B65F1/1468—Means for facilitating the transport of the receptacle, e.g. wheels, rolls
- B65F1/1473—Receptacles having wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/14—Other constructional features; Accessories
- B65F1/16—Lids or covers
- B65F1/1607—Lids or covers with filling openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F2210/00—Equipment of refuse receptacles
- B65F2210/167—Sealing means
Definitions
- the invention relates to a device for welding waste according to the preamble of claim 1.
- Devices for welding waste are mainly used in laboratories and medical facilities for safe and low-contamination disposal of toxic or infectious waste and hazardous waste, the waste to be disposed of by means of the device aerosol and liquid-tight sealed in foil bags.
- a device for packaging waste by welding in foil bag which comprises a housing having a receiving space for a folded film tube and extending through the receiving space funnel.
- a welding unit with two movable heatable welding jaws is arranged, between which an inwardly folded, guided from top to bottom through the hopper hose section of the film tube can be clamped and welded along a transversely extending over the hose section away weld.
- a conveyor unit with two pairs of conveyor rollers is arranged below the welding unit, between which the tube section extends.
- the conveyor rollers of each pair of rollers are pressed from opposite sides against an edge strip of the tube portion and driven to transport the tube portion in the opposite direction of rotation.
- the emerging from the conveyor unit film tube consists of a series of contiguous bags, between each of which a weld is arranged. The transport and the Welding of the hose section are triggered by a foot switch.
- tubular film is heated to flow along the dividing seams, it can not be ruled out that bags of welded waste along one or both dividing lines will leak leaking toxic or infectious material.
- the lower end of the tube section below the welding and separating unit with the last filled or welded bag is only safely separated if the weight of this lower end or the waste welded therein is greater than the resistance force along which the dividing seam up to the flow of heated tubular film opposes a separation. If the shrink-wrapped waste has only a very low weight, such as used syringes that are contaminated with toxic or infectious material, a safe separation is not always guaranteed.
- the present invention seeks to improve a device of the type mentioned in that with simple operation, the welded-waste can be welded either in individual separate bags or in several contiguous bags.
- This object is achieved in that by a different operation of the sensor optionally a welding cycle for welding the hose portion or a Trennsch spazyklus for welding the hose portion and for separating the lower end is triggered.
- the feature of the invention allows a user to decide, on a case by case basis, by a different operation of the sensor, whether to weld a waste batch to be welded in a single bag separate from other bags or in one of a plurality of contiguous bags.
- a preferred embodiment of the invention provides that the welding cycle or the separating welding cycle can be triggered by the fact that the sensor is actuated for different lengths. Since the waste is usually to be welded into contiguous bags, it is advantageous if the duration of the operation of the sensor to initiate the welding cycle is shorter than to initiate the separation welding cycle.
- a further preferred embodiment of the invention after a triggering of the welding cycle and / or the Trennsch spazyklus by a subsequent operation of the sensor first Transport the film tube, wherein the length of the transport path is in turn controllable by the duration of the operation of the sensor.
- the standing in engagement with the conveyor unit hose section is moved down so long until the bag has the desired length or an adjustable maximum bag length has been reached.
- each bag previously filled with a waste charge is welded in the welding and separation unit along a transverse weld seam which closes the bag located below the weld at the top. This weld also forms the weld at the bottom of the next bag, which is next filled with a waste batch. In this way, a corresponding number of contiguous bags is formed by a number of successive welding cycles, in which a waste charge is trapped aerosol- and liquid-tight between two welds.
- a transport direction of the conveyor unit for the purpose of separating the lower end of the hose section is reversible at Trennsch spazyklus.
- the separation of a filled and sealed bag from the film tube can be facilitated by exerting an upward pulling force on the portion of the tube section located above the filled bag between the conveying unit and the welding and separating unit and thereby this part of the tube section is pulled up.
- the sensor serving to control the welding and separating unit and preferably also the conveying unit may be an optical sensor or an ultrasonic sensor.
- an infrared sensor is used which comprises a transmitter and a receiver, the former emitting IR radiation and the latter receiving the IR radiation emitted by the transmitter and reflected back to the receiver by an object in the radiation path of the transmitter.
- the receiver Upon receipt of radiation, the receiver emits a signal, which is forwarded to a controller of the device in order to carry out a corresponding activation of the welding and separating unit and of the conveyor unit, depending on the time and duration of the reception of reflected IR radiation.
- the senor operates advantageously in pulse mode.
- a particularly ergonomic operation of the sensor is possible if, according to a further advantageous embodiment of the invention, on an upper side of the housing is arranged, expedient next to a throw-in opening for injecting the waste to be welded.
- the welding and separating unit preferably comprises two heatable welding jaws which, for welding the hose section, approach the hose section by means of a welding jaw drive from opposite sides and can be pressed against the latter.
- the two welding jaws each have a connectable to a power source heating wire, which is arranged between a Teflon tape on its side facing the hose section and a rubber band on its side facing away from the hose section is.
- a still further advantageous embodiment of the invention provides that at least one of the two welding jaws is resiliently mounted counter to the direction of movement when approaching the hose section and provided with a contact for reversing the direction of the welding jaw drive when the spring outside of a central welding position of the welding jaw by a Resistance in the same movement path is compressed and triggers the contact.
- the contact is preferably a reed contact, which is triggered by the approach of a permanent magnet during compression of the spring.
- the device according to the invention has a control which serves to activate the conveyor unit and the welding and separating unit when the device is put into operation.
- this control includes, inter alia, a device which monitors the power supply to the electric welding jaw drive during a movement apart of the welding jaws and the power supply to the drive motor interrupts and preferably reversed briefly when a predetermined current threshold is exceeded.
- the apparatus 10 of the invention shown in the drawing is used to weld waste into a foil tube 12 made of a thermoplastic film which, during welding, is subdivided by transversal welds into a series of aerosol and liquid tight bags, each containing a batch of wastes.
- a plurality of sealed bags may be dispensed as a contiguous strand or in the form of discrete separate bags from a housing 12 of the device 10, from which they fall down into a receptacle (not shown) positioned below the housing 12.
- the apparatus 10 includes, in addition to the flat parallelepiped housing 12, a chassis 14 having four elongated legs 16 supporting the housing 12, which are provided with rollers 18 at their lower ends, and a platform 20 mounted on the legs 16 near the lower ends to turn off of the collection container.
- the housing 12, the chassis 14 and the platform 20 are made of stainless steel.
- the device 10 can also be integrated without the chassis 14 in a work table or in a wall, for example as a built-in device.
- the cover member 24 has a circular insertion opening 32 for injecting the waste to be welded, which is surrounded by a flat funnel-shaped edge 34.
- the in-outline square trough-like housing base 22 has a flat bottom 36 which is provided with a central bottom opening 38.
- the electronics unit 26 has a flat bottom plate 40 with a central opening 42 which is aligned with the bottom opening 38 after insertion into the housing lower part 22.
- About the bottom plate 40 is bent from sheet metal frame-like wall portion 44 with a square outline vertically above, on which, inter alia, a power supply, a rechargeable battery 46 and a on a Printed circuit board mounted electronic control 48 of the device 10 are attached.
- the conveyor unit 30 has a bottom plate 50, an outline in square inner wall 52 made of sheet metal and an outline square outer wall 54 made of sheet metal, which are bent from the floor panel 50 upwards.
- the inner wall 52 of the conveyor unit 30 defines a square shaft 56 and is provided on opposite sides of the shaft 56 with two pairs of narrow conveyor rollers 58 in the form of friction wheels, each projecting inwardly into the shaft 56.
- a first of the two conveyor rollers 58 of each pair has a fixed axis, while a second of the two conveyor rollers 58 of each pair is pivotally mounted and acted upon by a pressure ram 60 with a spring force to press with its peripheral surface against the peripheral surface of the first conveyor roller 58 ,
- the two conveyor rollers 58 of each pair are non-rotatably connected by the inner wall 52 with meshing gears 62, of which the gear 62 of the fixed shaft conveyor roller 58 via a toothed belt 64 and an output shaft 66 of an electric drive motor 68 can be driven, so that the Always turn gears 62 in opposite directions.
- the drive motor 68 is a drive motor 68 with a reversible direction of rotation, which is arranged in the intermediate space between the inner and outer walls 52, 54.
- the welding and separating unit 28 has an outline square frame 70 which defines a passage opening 72 and an outer wall 74 of sheet metal, whose dimensions correspond to those of the outer wall of the conveyor unit 28.
- the frame 70 two movable parallel welding jaws 76 are arranged, the opposite ends of which are mounted on carriages which are of a welding jaw drive 78 along parallel guides 80 can be approximated or moved apart.
- the movement and the respective position of the welding jaws 76 are monitored by the controller 48 via microswitches according to the quiescent current principle.
- Each welding jaw 76 has a heating wire which can be connected to a current source and which is arranged between a Teflon strip on its side facing the passage opening 72 and a rubber band on its side facing away from the passage opening 72.
- the heating wires of the two welding jaws 76 are supplied with power from the controller 48 when the welding jaws 76 are in an intermediate welding position in which they are pressed against the welding between the welding jaws 76 extending hose portion 82 from opposite sides, as in Fig. 6 shown schematically.
- the welding jaws 76 are resiliently supported against the direction of movement in their approach to the carriage. Further, a reed contact is disposed on one of the slides, which is triggered by a permanent magnet attached to the welding jaw 76 when the spring is compressed outside the central welding position and thereby the magnet is approximated to the contact.
- the welding jaw drive 78 is an electric drive motor, to which power is supplied for the mutual approaching or moving apart of the welding jaws 76.
- the power supply to the drive motor 78 is monitored.
- the current consumption of the drive motor 78 exceeds a predetermined current threshold indicating that If there is an obstacle in the path of movement of the welding jaws 76 between these and opposite parts of the frame 70, the direction of movement of the welding jaws 76 is temporarily reversed by reversing the polarity of the drive motor 78.
- the obstacle is a user's hand or finger, it may pull the hand or fingers out of the gap between the welding jaw 76 and the frame 70 without the risk of injury.
- the outer wall 54 of the conveyor unit 30 and the outer wall 74 of the welding and separating unit 28 have corresponding lateral dimensions, while the wall portion 44 of the electronic unit 26 has larger lateral dimensions.
- a receiving space 84 for a folded film tube 86 is formed between the outer walls 54, 74 on the one hand and the wall portion 44 on the other hand, as in Fig. 6 shown.
- the film tube 86 which has been folded into an annular packet is inserted into the receiving space 84, which is accessible from above when the cover part 24 is removed. Subsequently, the upper end of the film tube 86 is folded inward or everted and passed through the limited by the inner wall 52 of the conveyor unit 30 shaft 56. In this case, between the two pairs of conveyor rollers 58 opposite and double superimposed edge strips of the folded inwards and through the shaft 56 and between the welding jaws 76 down guided hose portion 82 of the film tube 86 is clamped. In this way, the tube portion 82 can be transported downwardly through the housing 12 to and from the bottom opening 38, as indicated by the arrow A in FIG Fig. 6 illustrated by the conveyor rollers 58 are driven in the opposite direction of rotation, as indicated by the arrows B in Fig. 6 displayed. After this Closing the lid part 24, the device 10 can be put into operation.
- the device 10 is controlled by means of a contactlessly above the housing lower part 24 protruding infrared sensor 88 which projects into a punched next to the opening 32 opening 90 in the cover part 24.
- the sensor 88 comprises a pulse operating, emitting IR radiation transmitter 92 and an adjacent to the transmitter 92 arranged IR receiver 94.
- the receiver 94 is responsive when vertically upwards from the transmitter 92 emitted IR radiation from one above of the sensor 88 at a distance of less than 0.2 m in the radiation path of the IR radiation moving object is reflected back to the receiver 94.
- the sensor 88 also includes an indicator light 96, which indicates various operating states of the device 10 by different colors.
- the device 10 After switching on a arranged on the bottom of the housing 12 battery disconnect switch 98 for connecting the battery 46, the device 10 is in stand-by mode, in which the device 10 can not be controlled by means of the sensor 88.
- the activation takes place by pressing a reset button 100 on the lower housing part 22, whereupon the indicator lamp 96 lights up in a first color.
- the hose section 82 of the film tube 86 in the welding and separating unit 28, which is turned inwards is guided downward through the shaft 56 and the remaining housing 12 Welding jaws 76 closed by a transverse over the hose section 82 extending weld, which then forms the lower end of the first bag.
- one of the user may select one of two desired modes, namely, a welding cycle and a separation welding cycle.
- the welding cycle is triggered by moving an object, for example the user's hand, over the sensor 88 into the IR radiation path. Thereafter, the indicator light 96 begins to flash in a different color, indicating that the device 10 is waiting and waiting for another input from the user.
- transport of the hose portion 82 is initiated by driving the two pairs of conveyor rollers 58 of the conveyor unit 30. The transport takes place until the user again moves the hand away from the sensor 88 or until an adjustable maximum bag length is reached. The user can thus control by the residence time of the hand above the sensor 88, the length of the film bag to be formed to receive the waste.
- the user may throw a batch of the waste into the throw-in port 32 from where they fall into the upwardly open hose section 82 or bag which has previously been welded in the welding and separation unit 28 at the lower end.
- a welding operation is then initiated again to close the top of the bag.
- the two welding jaws 76 are approached from opposite sides of the hose portion 82 and pressed against it. Then, current is supplied to the heating wires in the welding jaws 76 to weld the hose portion 82 therebetween along a weld extending transversely across the hose portion 82 and thus hermetically seal the film bag close.
- the film tube is not severed in the welding cycle to form a continuous string of bags which are closed at both ends by parallel welds, the contents of each bag being hermetically separated from the contents of the adjacent bags.
- the splice cycle is triggered by holding an object, such as the user's hand, over the sensor 88 for a period of more than 2 to 3 seconds.
- the indicator light 96 flashes in still another color and the separation welding cycle is initiated.
- a hand-controlled transport of the hose portion 82 is first initiated, which lasts until the user moves the hand away from the sensor 88 again or a maximum adjustable bag length is reached.
- the user can, as in the welding cycle throw the waste into the insertion opening 32, from where they fall into the already sealed at the bottom of foil bag.
- a first welding operation is initiated in which the bag is welded at the top by a transverse weld, as previously described for the welding cycle.
- the hose section 82 is again moved downwardly a short distance by the conveyor unit 30, preferably by about 5 centimeters.
- the two welding jaws 76 are again approximated to the hose portion 82 and pressed against this, but the heater wires more power than in the welding process is supplied. Due to the greater amount of heat generated thereby, the hose portion 82 between the welding jaws 76 is heated to flow.
- the direction of rotation of the drive motor 68 of the conveyor unit 30 is reversed by reversing the polarity and power is again briefly supplied to the drive motor 68.
- the part of the hose section 82 located between the conveying unit 30 and the welding and separating unit 28 is moved backwards, ie upwards, and thus along a separating seam extending between the welding jaws 76 from the lower end of the hose section 82 projecting downwards beyond the welding jaws 76 demolished the last welded bag. This latter then falls either immediately or at the latest when moving apart of the welding jaws 76 down into the receptacle.
- the hose section 82 is once again moved downward a short distance by the conveyor unit 30 and then welded again along a weld before the next cycle can be initiated.
- individual bags are produced at the Trennsch spases with shrink-wrapped waste, which are closed at both ends by two parallel seams, a weld adjacent to the bag contents and arranged directly at the bag end seam.
- thermoplastic material of the film tube is heated along the seams to a temperature such that a plurality of overlying or overlapping layers of the plastic material hermetically bond together along the seams.
- the welding cycle and the separating welding cycle can be stopped at any time.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Package Closures (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum EinschweiĆen von AbfƤllen gemĆ¤Ć dem Oberbegriff des Anspruchs 1.The invention relates to a device for welding waste according to the preamble of claim 1.
Vorrichtungen zum EinschweiĆen von AbfƤllen werden vor allem in Laboren und in medizinischen Einrichtungen zur sicheren und kontaminationsarmen Entsorgung von toxischen oder infektiƶsen AbfƤllen sowie SondermĆ¼ll eingesetzt, wobei die zu entsorgenden AbfƤlle mittels der Vorrichtung aerosol- und flĆ¼ssigkeitsdicht in Folienbeutel eingeschweiĆt werden.Devices for welding waste are mainly used in laboratories and medical facilities for safe and low-contamination disposal of toxic or infectious waste and hazardous waste, the waste to be disposed of by means of the device aerosol and liquid-tight sealed in foil bags.
Aus der
Weiter ist aus der
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art dahingehend zu verbessern, dass bei einfacher Bedienung die einzuschweiĆenden AbfƤlle wahlweise in einzelnen getrennten Beuteln oder in mehreren zusammenhƤngenden Beuteln eingeschweiĆt werden kƶnnen.Proceeding from this, the present invention seeks to improve a device of the type mentioned in that with simple operation, the welded-waste can be welded either in individual separate bags or in several contiguous bags.
Diese Aufgabe wird erfindungsgemĆ¤Ć dadurch gelƶst, dass durch eine unterschiedliche BetƤtigung des Sensors wahlweise ein SchweiĆzyklus zum VerschweiĆen des Schlauchabschnitts oder ein TrennschweiĆzyklus zum VerschweiĆen des Schlauchabschnitts und zum Abtrennen des unteren Endes auslƶsbar ist.This object is achieved in that by a different operation of the sensor optionally a welding cycle for welding the hose portion or a TrennschweiĆzyklus for welding the hose portion and for separating the lower end is triggered.
Durch das erfindungsgemƤĆe Merkmal kann ein Benutzer von Fall zu Fall allein durch eine unterschiedliche BetƤtigung des Sensors entscheiden, ob eine einzuschweiĆende Abfallcharge in einem einzelnen, von anderen Beuteln getrennten Beutel oder in einem von einer Mehrzahl von zusammenhƤngenden Beuteln eingeschweiĆt werden soll.The feature of the invention allows a user to decide, on a case by case basis, by a different operation of the sensor, whether to weld a waste batch to be welded in a single bag separate from other bags or in one of a plurality of contiguous bags.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, dass der SchweiĆzyklus bzw. der TrennschweiĆzyklus dadurch auslƶsbar sind, dass der Sensor unterschiedlich lang betƤtigt wird. Da die AbfƤlle zumeist in zusammenhƤngenden Beuteln eingeschweiĆt werden sollen, ist es von Vorteil, wenn die Zeitdauer der BetƤtigung des Sensors zur Auslƶsung des SchweiĆzyklus kĆ¼rzer als zur Auslƶsung des TrennschweiĆzyklus ist.A preferred embodiment of the invention provides that the welding cycle or the separating welding cycle can be triggered by the fact that the sensor is actuated for different lengths. Since the waste is usually to be welded into contiguous bags, it is advantageous if the duration of the operation of the sensor to initiate the welding cycle is shorter than to initiate the separation welding cycle.
Um es zu ermƶglichen, die LƤnge eines Beutels zum Beispiel in AbhƤngigkeit von der GrƶĆe der einzuschweiĆenden AbfƤlle frei zu wƤhlen, sieht eine weitere bevorzugte Ausgestaltung der Erfindung vor, nach einer Auslƶsung des SchweiĆzyklus und/oder des TrennschweiĆzyklus durch eine nachfolgende BetƤtigung des Sensors zuerst einen Transport des Folienschlauchs auszulƶsen, wobei die LƤnge des Transportwegs wiederum durch die Zeitdauer der BetƤtigung des Sensors steuerbar ist. Vorteilhaft wird der im Eingriff mit der Fƶrdereinheit stehende Schlauchabschnitt dabei so lange nach unten bewegt, bis der Beutel die gewĆ¼nschte LƤnge besitzt oder eine einstellbare maximale BeutellƤnge erreicht worden ist.In order to make it possible to freely choose the length of a bag, for example, depending on the size of the waste to be welded, a further preferred embodiment of the invention, after a triggering of the welding cycle and / or the TrennschweiĆzyklus by a subsequent operation of the sensor first Transport the film tube, wherein the length of the transport path is in turn controllable by the duration of the operation of the sensor. Advantageously, the standing in engagement with the conveyor unit hose section is moved down so long until the bag has the desired length or an adjustable maximum bag length has been reached.
Bei jedem SchweiĆzyklus wird jeweils der zuvor mit einer Abfallcharge befĆ¼llte Beutel in der SchweiĆ- und Trenneinheit entlang von einer quer verlaufenden SchweiĆnaht verschweiĆt, die den unterhalb der SchweiĆnaht angeordneten Beutel am oberen Ende verschlieĆt. Diese SchweiĆnaht bildet gleichzeitig die SchweiĆnaht am unteren Ende des folgenden Beutels, der als nƤchstes mit einer Abfallcharge befĆ¼llt wird. Auf diese Weise wird durch eine Anzahl von aufeinander folgenden SchweiĆzyklen eine entsprechende Anzahl von zusammenhƤngenden Beuteln gebildet, in denen zwischen zwei SchweiĆnƤhten jeweils eine Abfallcharge aerosol- und flĆ¼ssigkeitsdicht eingeschlossen ist.At each weld cycle, each bag previously filled with a waste charge is welded in the welding and separation unit along a transverse weld seam which closes the bag located below the weld at the top. This weld also forms the weld at the bottom of the next bag, which is next filled with a waste batch. In this way, a corresponding number of contiguous bags is formed by a number of successive welding cycles, in which a waste charge is trapped aerosol- and liquid-tight between two welds.
Anders als bei der Vorrichtung aus der
GemĆ¤Ć einer weiteren bevorzugten Ausgestaltung der Erfindung ist beim TrennschweiĆzyklus eine Transportrichtung der Fƶrdereinheit zum Zwecke des Abtrennens des unteren Endes des Schlauchabschnitts umkehrbar. Auf diese Weise kann beim TrennschweiĆzyklus das Abtrennen eines befĆ¼llten und verschweiĆten Beutels vom Folienschlauch erleichtert werden, indem eine nach oben gerichtete Zugkraft auf den oberhalb des befĆ¼llten Beutels zwischen der Fƶrdereinheit und der SchweiĆ- und Trenneinheit befindlichen Teil des Schlauchabschnitts ausgeĆ¼bt und dadurch dieser Teil des Schlauchabschnitts nach oben gezogen wird.According to a further preferred embodiment of the invention, a transport direction of the conveyor unit for the purpose of separating the lower end of the hose section is reversible at TrennschweiĆzyklus. In this way, in the separation welding cycle, the separation of a filled and sealed bag from the film tube can be facilitated by exerting an upward pulling force on the portion of the tube section located above the filled bag between the conveying unit and the welding and separating unit and thereby this part of the tube section is pulled up.
Bei dem zur Ansteuerung der SchweiĆ- und Trenneinheit und vorzugsweise auch der Fƶrdereinheit dienenden Sensor kann es sich um einen optischen Sensor oder um einen Ultraschall-Sensor handeln. Bevorzugt wird ein Infrarot-Sensor verwendet, der einen Sender und einen EmpfƤnger umfasst, wobei der erstere IR-Strahlung emittiert und der letztere die vom Sender emittierte und durch ein Objekt im Strahlungsweg des Senders zum EmpfƤnger zurĆ¼ck reflektierte IR-Strahlung empfƤngt. Bei einem Empfang von Strahlung gibt der EmpfƤnger ein Signal ab, das an eine Steuerung der Vorrichtung weitergeleitet wird, um je nach Zeitpunkt und Zeitdauer des Empfangs von reflektierter IR-Strahlung eine entsprechende Ansteuerung der SchweiĆ- und Trenneinheit und der Fƶrdereinheit vorzunehmen.The sensor serving to control the welding and separating unit and preferably also the conveying unit may be an optical sensor or an ultrasonic sensor. Preferably, an infrared sensor is used which comprises a transmitter and a receiver, the former emitting IR radiation and the latter receiving the IR radiation emitted by the transmitter and reflected back to the receiver by an object in the radiation path of the transmitter. Upon receipt of radiation, the receiver emits a signal, which is forwarded to a controller of the device in order to carry out a corresponding activation of the welding and separating unit and of the conveyor unit, depending on the time and duration of the reception of reflected IR radiation.
Um zu vermeiden, dass der Sensor durch IR-Streustrahlung aus der Umgebung betƤtigt wird, arbeitet der Sensor vorteilhaft im Pulsbetrieb. Eine besonders ergonomische BetƤtigung des Sensors ist mƶglich, wenn dieser gemĆ¤Ć einer weiteren vorteilhaften Ausgestaltung der Erfindung an einer Oberseite des GehƤuses angeordnet ist, zweckmƤĆig neben einer Einwurfƶffnung zum Einwerfen der einzuschweiĆenden AbfƤlle.In order to avoid that the sensor is actuated by IR scattered radiation from the environment, the sensor operates advantageously in pulse mode. A particularly ergonomic operation of the sensor is possible if, according to a further advantageous embodiment of the invention, on an upper side of the housing is arranged, expedient next to a throw-in opening for injecting the waste to be welded.
Die SchweiĆ- und Trenneinheit umfasst vorzugsweise zwei beheizbare SchweiĆbacken, die sich zum VerschweiĆen des Schlauchabschnitts mittels eines SchweiĆbackenantriebs von entgegengesetzten Seiten her an den Schlauchabschnitt annƤhern und gegen diesen anpressen lassen.The welding and separating unit preferably comprises two heatable welding jaws which, for welding the hose section, approach the hose section by means of a welding jaw drive from opposite sides and can be pressed against the latter.
Um ein Festkleben der SchweiĆbacken am Schlauchabschnitt zu vermeiden und fĆ¼r eine gleichmƤĆige VerschweiĆung zu sorgen, weisen die beiden SchweiĆbacken jeweils einen mit einer Stromquelle verbindbaren Heizdraht auf, der zwischen einem Teflonband auf seiner dem Schlauchabschnitt zugewandten Seite und einem Gummiband auf seiner vom Schlauchabschnitt abgewandten Seite angeordnet ist.In order to avoid sticking of the welding jaws on the hose portion and to ensure uniform welding, the two welding jaws each have a connectable to a power source heating wire, which is arranged between a Teflon tape on its side facing the hose section and a rubber band on its side facing away from the hose section is.
Eine noch weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass mindestens eine der beiden SchweiĆbacken entgegen der Bewegungsrichtung bei der AnnƤherung an den Schlauchabschnitt federnd gelagert und mit einem Kontakt zur Richtungsumkehr des SchweiĆbackenantriebs versehen ist, wenn die Feder auĆerhalb von einer mittigen SchweiĆposition der SchweiĆbacke durch einen Widerstand im Bewegungsweg derselben zusammengedrĆ¼ckt wird und den Kontakt auslƶst. Der Kontakt ist vorzugsweise ein Reed-Kontakt, der durch AnnƤherung eines Dauermagneten beim ZusammendrĆ¼cken der Feder ausgelƶst wird. Auf diese Weise kann ein Quetschen einer Hand oder eines Fingers eines Benutzers verhindert werden, sofern dieser unerwartet die Hand oder den Finger von oben oder von unten her zwischen die sich annƤhernden SchweiĆbacken einfĆ¼hren sollte. Eine eventuelle Verbrennung an einem der HeizdrƤhte wird dadurch verhindert, dass die Stromzufuhr zu den HeizdrƤhten erst eingeschaltet wird, wenn die SchweiĆbacken eine mittige SchweiĆposition erreicht haben.A still further advantageous embodiment of the invention provides that at least one of the two welding jaws is resiliently mounted counter to the direction of movement when approaching the hose section and provided with a contact for reversing the direction of the welding jaw drive when the spring outside of a central welding position of the welding jaw by a Resistance in the same movement path is compressed and triggers the contact. The contact is preferably a reed contact, which is triggered by the approach of a permanent magnet during compression of the spring. In this way, a squeezing of a hand or a finger of a user can be prevented, provided that unexpectedly the hand or finger should be introduced from above or from below between the approaching welding jaws. A possible combustion on one of the heating wires is prevented by the power supply to the heating wires is only switched on when the welding jaws have reached a central welding position.
Die erfindungsgemƤĆe Vorrichtung besitzt eine Steuerung, die zur Aktivierung der Fƶrdereinheit und der SchweiĆ- und Trenneinheit dient, wenn die Vorrichtung in Betrieb genommen wird. Vorteilhaft umfasst diese Steuerung unter anderem eine Einrichtung, welche die Stromzufuhr zu dem elektrischen SchweiĆbackenantrieb wƤhrend eines Auseinanderbewegens der SchweiĆbacken Ć¼berwacht und die Stromzufuhr zum Antriebsmotor unterbricht und bevorzugt kurzzeitig umkehrt, wenn ein vorbestimmter Strom-Schwellenwert Ć¼berschritten wird. Dadurch kann ein Quetschen einer Hand oder eines Fingers eines Benutzers verhindert werden, sofern dieser die Hand oder den Finger unerwartet von oben oder von unten her zwischen eine der sich auseinander bewegenden SchweiĆbacken und einen gegenĆ¼berliegenden starren Teil der SchweiĆ- und Trenneinheit einfĆ¼hren sollte.The device according to the invention has a control which serves to activate the conveyor unit and the welding and separating unit when the device is put into operation. Advantageously, this control includes, inter alia, a device which monitors the power supply to the electric welding jaw drive during a movement apart of the welding jaws and the power supply to the drive motor interrupts and preferably reversed briefly when a predetermined current threshold is exceeded. As a result, a squeezing of a hand or a finger of a user can be prevented, as long as the hand or finger unexpectedly from above or below between one of the diverging welding jaws and an opposite rigid part of the welding and separating unit should introduce.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten AusfĆ¼hrungsbeispiels nƤher erlƤutert. Es zeigen:
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Fig. 1 eine perspektivische Ansicht einer erfindungsgemƤĆen Vorrichtung zum EinschweiĆen von AbfƤllen in einen Folienschlauch; -
Fig. 2 eine Oberseitenansicht eines GehƤuses der Vorrichtung; -
Fig. 3 eine Oberseitenansicht des GehƤuses nach dem Abnehmen eines GehƤusedeckels; -
Fig. 4 eine perspektivische Ansicht des GehƤuses; -
Fig. 5 eine perspektivische Ansicht des GehƤuses nach dem Abnehmen eines GehƤusedeckels; -
Fig. 6 eine schematische Schnittansicht des GehƤuses zur ErlƤuterung der Funktionsweise der Vorrichtung; -
Fig. 7 eine auseinander gezogene perspektivische Ansicht einer Fƶrdereinheit, einer SchweiĆ- und Trenneinheit und eines GehƤuseunterteils des GehƤuses; -
Fig. 8 eine perspektivische Ansicht der Fƶrdereinheit; -
Fig. 9 eine perspektivische Ansicht der SchweiĆ- und Trenneinheit.
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Fig. 1 a perspective view of a device according to the invention for welding waste into a film tube; -
Fig. 2 a top view of a housing of the device; -
Fig. 3 a top view of the housing after removing a housing cover; -
Fig. 4 a perspective view of the housing; -
Fig. 5 a perspective view of the housing after removing a housing cover; -
Fig. 6 a schematic sectional view of the housing for explaining the operation of the device; -
Fig. 7 an exploded perspective view of a conveyor unit, a welding and separating unit and a housing lower part of the housing; -
Fig. 8 a perspective view of the conveyor unit; -
Fig. 9 a perspective view of the welding and separating unit.
Die in der Zeichnung dargestellte erfindungsgemƤĆe Vorrichtung 10 dient zum EinschweiĆen von AbfƤllen in einen Folienschlauch 12 aus einer thermoplastischen Kunststofffolie, der wƤhrend des EinschweiĆens durch quer verlaufende SchweiĆnƤhte in eine Reihe von aerosol- und flĆ¼ssigkeitsdichten Beuteln unterteilt wird, welche jeweils eine Charge der AbfƤlle enthalten.The
Mit der Vorrichtung 10 kƶnnen mehrere verschweiĆte Beutel wahlweise als zusammenhƤngender Strang oder in Form von einzelnen getrennten Beuteln aus einem GehƤuse 12 der Vorrichtung 10 abgegeben werden, aus dem sie nach unten in einen unter dem GehƤuse 12 positionierten AuffangbehƤlter (nicht dargestellt) fallen.With the
Die Vorrichtung 10 umfasst neben dem flachen quaderfƶrmigen GehƤuse 12 ein Fahrgestell 14 mit vier langgestreckten, das GehƤuse 12 tragenden Beinen 16, die an ihren unteren Enden mit Rollen 18 versehen sind, sowie eine in der NƤhe der unteren Enden an den Beinen 16 angebrachte Plattform 20 zum Abstellen des AuffangbehƤlters. Das GehƤuse 12, das Fahrgestell 14 und die Plattform 20 bestehen aus Edelstahl. Die Vorrichtung 10 kann jedoch auch ohne das Fahrgestell 14 in einen Arbeitstisch oder in eine Wand integriert werden, z.B. als EinbaugerƤt.The
Das im Wesentlichen aus einem GehƤuseunterteil 22 und einem abnehmbaren Deckelteil 24 bestehende GehƤuse 12 umgibt eine Elektronikeinheit 26, eine SchweiĆ- und Trenneinheit 28 und eine Fƶrdereinheit 30, die im GehƤuseinneren untergebracht sind. Wie am besten in
Wie am besten in
Wie am besten in
Wie in
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Wie in
Den HeizdrƤhten der beiden SchweiĆbacken 76 wird von der Steuerung 48 Strom zugefĆ¼hrt, wenn sich die SchweiĆbacken 76 in einer mittleren SchweiĆposition befinden, in der sie von entgegengesetzten Seiten her gegen den zwischen den SchweiĆbacken 76 hindurch verlaufenden Schlauchabschnitt 82 angepresst werden, wie in
Um Verletzungen an einer Hand oder an Fingern eines Benutzers zu verhindern, die bei der gegenseitigen AnnƤherung der beiden SchweiĆbacken 76 versehentlich zwischen diese gelangen, sind die SchweiĆbacken 76 entgegen der Bewegungsrichtung bei ihrer AnnƤherung auf den Schlitten federnd abgestĆ¼tzt. Weiter ist auf einem der Schlitten ein Reed-Kontakt angeordnet, der von einem an der SchweiĆbacke 76 befestigten Dauermagneten ausgelƶst wird, wenn die Feder auĆerhalb der mittigen SchweiĆposition zusammengedrĆ¼ckt und dadurch der Magnet an den Kontakt angenƤhert wird.In order to prevent injury to a hand or fingers of a user who accidentally get between them in the mutual approach of the two welding
Der SchweiĆbackenantrieb 78 ist ein elektrischer Antriebsmotor, dem zum gegenseitigen AnnƤhern bzw. zum Auseinanderbewegen der SchweiĆbacken 76 Strom zugefĆ¼hrt wird. Beim Auseinanderbewegen der SchweiĆbacken 76 wird die Stromzufuhr zum Antriebsmotor 78 Ć¼berwacht. Wenn die Stromaufnahme des Antriebsmotors 78 einen vorbestimmten Strom-Schwellenwert Ć¼bersteigt, der anzeigt, dass sich im Bewegungsweg der SchweiĆbacken 76 zwischen diesen und gegenĆ¼berliegenden Teilen des Rahmens 70 ein Hindernis befindet, wird die Bewegungsrichtung der SchweiĆbacken 76 durch Umpolung des Antriebsmotors 78 kurzzeitig umgekehrt. Wenn es sich bei dem Hindernis um eine Hand oder Finger eines Benutzers handelt, kann dieser die Hand oder Finger somit ohne die Gefahr von Verletzungen wieder aus dem Spalt zwischen der SchweiĆbacke 76 und dem Rahmen 70 herausziehen.The
Die AuĆenwand 54 der Fƶrdereinheit 30 und die AuĆenwand 74 der SchweiĆ- und Trenneinheit 28 besitzen entsprechende seitliche Abmessungen, wƤhrend der Wandteil 44 der Elektronikeinheit 26 grƶĆere seitliche Abmessungen aufweist. Auf diese Weise wird zwischen den AuĆenwƤnden 54, 74 einerseits und dem Wandteil 44 andererseits ein Aufnahmeraum 84 fĆ¼r einen zusammengefalteten Folienschlauch 86 gebildet, wie in
Vor der Inbetriebnahme der Vorrichtung 10 wird der zu einem ringfƶrmigen Paket zusammengefaltete Folienschlauch 86 in den Aufnahmeraum 84 eingesetzt, der bei abgenommenem Deckelteil 24 von oben her zugƤnglich ist. AnschlieĆend wird das obere Ende des Folienschlauchs 86 nach innen umgeschlagen oder umgestĆ¼lpt und durch den von der Innenwand 52 der Fƶrdereinheit 30 begrenzten Schacht 56 hindurchgefĆ¼hrt. Dabei werden zwischen den beiden Paaren von Fƶrderrollen 58 entgegengesetzte und doppelt Ć¼bereinander gelegte Randstreifen des nach innen umgeschlagenen und durch den Schacht 56 sowie zwischen den SchweiĆbacken 76 nach unten gefĆ¼hrten Schlauchabschnitts 82 des Folienschlauchs 86 eingeklemmt. Auf diese Weise kann der Schlauchabschnitt 82 nach unten durch das GehƤuse 12 hindurch bis zur Bodenƶffnung 38 und durch diese hinaus transportiert werden, wie durch den Pfeil A in
Im Betrieb wird die Vorrichtung 10 mit Hilfe eines nach oben Ć¼ber den GehƤuseunterteil 24 Ć¼berstehenden berĆ¼hrungslos arbeitenden Infrarot-Sensors 88 gesteuert, der in eine neben der Einwurfƶffnung 32 ausgestanzte Ćffnung 90 im Deckelteil 24 ragt. Wie in
Nach dem Einschalten eines an der Unterseite des GehƤuses 12 angeordneten Akku-Trennschalters 98 zum AnschlieĆen des Akkus 46 befindet sich die Vorrichtung 10 im Stand-by-Modus, in dem sich die Vorrichtung 10 mit Hilfe des Sensors 88 nicht steuern lƤsst. Die Aktivierung erfolgt durch DrĆ¼cken einer Reset-Taste 100 am GehƤuseunterteil 22, woraufhin die Anzeigeleuchte 96 in einer ersten Farbe leuchtet. Beim erstmaligen Gebrauch der Vorrichtung 10 nach dem Einlegen eines neuen Folienschlauchs 86 in den Aufnahmeraum 84 wird der nach innen umgeschlagene, durch den Schacht 56 und das Ć¼brige GehƤuse 12 hindurch nach unten gefĆ¼hrte Schlauchabschnitt 82 des Folienschlauchs 86 in der SchweiĆ- und Trenneinheit 28 zwischen den SchweiĆbacken 76 durch eine quer Ć¼ber den Schlauchabschnitt 82 verlaufende SchweiĆnaht verschlossen, die dann das untere Ende des ersten Beutels bildet.After switching on a arranged on the bottom of the
Im Gebrauch der Vorrichtung 10 kann bei aktiviertem Sensor 88 von einem Benutzer eine von zwei gewĆ¼nschten Betriebsarten ausgewƤhlt werden, nƤmlich ein SchweiĆzyklus und ein TrennschweiĆzyklus.In use of the
Der SchweiĆzyklus wird ausgelƶst, indem ein Objekt, zum Beispiel die Hand des Benutzers Ć¼ber dem Sensor 88 in den Strahlungsweg der IR-Strahlung bewegt wird. Daraufhin beginnt die Anzeigeleuchte 96 in einer anderen Farbe zu blinken, was anzeigt, dass sich die Vorrichtung 10 im Wartezustand befindet und auf eine weitere Eingabe vom Benutzer wartet. Wenn der Benutzer die Hand erneut Ć¼ber den Sensor 88 bewegt, wird ein Transport des Schlauchabschnitts 82 durch Antreiben der beiden Paare von Fƶrderrollen 58 der Fƶrdereinheit 30 ausgelƶst. Der Transport erfolgt so lange, bis der Benutzer die Hand wieder vom Sensor 88 wegbewegt oder bis eine einstellbare maximale BeutellƤnge erreicht ist. Der Benutzer kann somit durch die Verweilzeit der Hand Ć¼ber dem Sensor 88 die LƤnge des Folienbeutels steuern, der zur Aufnahme der AbfƤlle gebildet werden soll. Vor oder wƤhrend des Transports kann der Benutzer eine Charge der AbfƤlle in die Einwurfƶffnung 32 werfen, von wo sie in den nach oben offenen Schlauchabschnitt 82 oder Beutel fallen, der bereits zuvor in der SchweiĆ- und Trenneinheit 28 am unteren Ende verschweiĆt worden ist. Wenn der Benutzer die Hand vom Sensor 88 wegbewegt, wird dann zum VerschlieĆen des oberen Endes des Beutels erneut ein SchweiĆvorgang ausgelƶst. Bei den SchweiĆvorgƤngen werden die beiden SchweiĆbacken 76 von entgegengesetzten Seiten her an den Schlauchabschnitt 82 angenƤhert und gegen diesen angepresst. Dann wird den HeizdrƤhten in den SchweiĆbacken 76 Strom zugefĆ¼hrt, um den Schlauchabschnitt 82 zwischen diesen entlang einer quer Ć¼ber den Schlauchabschnitt 82 verlaufenden SchweiĆnaht zu verschweiĆen und somit den Folienbeutel hermetisch zu verschlieĆen. Zwischen dem oberen Ende eines Beutels und dem unteren Ende eines nachfolgend gebildeten Beutels ist jeweils eine einzige SchweiĆnaht angeordnet. Der Folienschlauch wird im SchweiĆzyklus nicht durchtrennt, so dass ein zusammenhƤngender Strang von Beuteln erzeugt wird, die an beiden Enden durch parallele SchweiĆnƤhte verschlossen sind, wobei der Inhalt jedes Beutels hermetisch vom Inhalt der benachbarten Beutel getrennt ist.The welding cycle is triggered by moving an object, for example the user's hand, over the
Der TrennschweiĆzyklus wird ausgelƶst, indem ein Objekt, zum Beispiel die Hand des Benutzers Ć¼ber einen lƤngeren Zeitraum von mehr als 2 bis 3 Sekunden Ć¼ber den Sensor 88 gehalten wird. In diesem Fall blinkt die Anzeigeleuchte 96 in einer noch anderen Farbe und der TrennschweiĆzyklus wird eingeleitet. Wie beim SchweiĆzyklus wird zuerst ein handgesteuerter Transport des Schlauchabschnitts 82 ausgelƶst, der so lange anhƤlt, bis der Benutzer die Hand wieder vom Sensor 88 wegbewegt bzw. eine maximale einstellbare BeutellƤnge erreicht ist. Vor oder wƤhrend des Transports kann der Benutzer wie beim SchweiĆzyklus die AbfƤlle in die Einwurfƶffnung 32 werfen, von wo sie in den am unteren Ende bereits verschweiĆten Folienbeutel fallen. Wenn der Benutzer die Hand vom Sensor 88 wegbewegt, wird ein erster SchweiĆvorgang ausgelƶst, bei dem der Beutel am oberen Ende durch eine quer verlaufende SchweiĆnaht verschweiĆt wird, wie zuvor fĆ¼r den SchweiĆzyklus beschrieben. Nachdem die SchweiĆbacken 76 wieder auseinander bewegt worden sind, wird beim TrennschweiĆzyklus der Schlauchabschnitt 82 jedoch von der Fƶrdereinheit 30 erneut um ein kurzes StĆ¼ck nach unten bewegt, vorzugsweise um etwa 5 Zentimeter. Danach werden die beiden SchweiĆbacken 76 wieder an den Schlauchabschnitt 82 angenƤhert und gegen diesen angepresst, wobei jedoch den HeizdrƤhten mehr Strom als beim SchweiĆvorgang zugefĆ¼hrt wird. Durch die dadurch erzeugte grƶĆere WƤrmemenge wird der Schlauchabschnitt 82 zwischen den SchweiĆbacken 76 bis zum FlieĆen erwƤrmt. Wenn dies nach Ablauf einer zuvor durch Versuche ermittelten voreingestellten Zeitspanne der Fall ist, wird die Drehrichtung des Antriebsmotors 68 der Fƶrdereinheit 30 durch Umpolung umgekehrt und dem Antriebsmotor 68 erneut kurzzeitig Strom zugefĆ¼hrt. Dadurch wird der zwischen der Fƶrdereinheit 30 und der SchweiĆ- und Trenneinheit 28 befindliche Teil des Schlauchabschnitts 82 rĆ¼ckwƤrts, d.h. nach oben bewegt und somit entlang einer zwischen den SchweiĆbacken 76 verlaufenden Trennnaht von dem nach unten Ć¼ber die SchweiĆbacken 76 Ć¼berstehenden unteren Ende des Schlauchabschnitts 82 mit dem zuletzt verschweiĆten Beutel abgerissen. Dieser letztere fƤllt dann entweder sofort oder spƤtestens beim Auseinanderbewegen der SchweiĆbacken 76 nach unten in den AuffangbehƤlter. Nach dem Auseinanderbewegen der SchweiĆbacken 76 wird der Schlauchabschnitt 82 von der Fƶrdereinheit 30 noch einmal um ein kurzes StĆ¼ck nach unten bewegt und dann erneut entlang einer SchweiĆnaht verschweiĆt, bevor der nƤchste Zyklus eingeleitet werden kann. Auf diese Weise werden beim TrennschweiĆzyklus einzelne Beutel mit eingeschweiĆten AbfƤllen erzeugt, die an beiden Enden durch zwei parallele NƤhte, eine zum Beutelinhalt benachbarte SchweiĆnaht und eine unmittelbar am Beutelende angeordnete Trennnaht, verschlossen sind.The splice cycle is triggered by holding an object, such as the user's hand, over the
Sowohl beim SchweiĆzyklus und beim TrennschweiĆzyklus wird jedoch das thermoplastische Kunststoffmaterial des Folienschlauchs entlang der NƤhte bis zu einer solchen Temperatur erwƤrmt, dass sich entlang der NƤhte auch mehrere Ć¼bereinander liegende oder einander Ć¼berlappende Schichten des Kunststoffmaterials hermetisch miteinander verbinden.However, in both the weld cycle and the seal weld cycle, the thermoplastic material of the film tube is heated along the seams to a temperature such that a plurality of overlying or overlapping layers of the plastic material hermetically bond together along the seams.
Durch DrĆ¼cken der Reset-Taste 100 kƶnnen der SchweiĆzyklus und der TrennschweiĆzyklus zu einem beliebigen Zeitpunkt abgebrochen werden.By pressing the
Claims (10)
- Apparatus (10) for welding waste into a film tube (86), having a housing (10) which surrounds a receiving space (84) for the folded-up film tube (86), a chute (56), through which an inwardly folded-over tube section (82) of the film tube (86) extends from top to bottom, a conveying unit (30) which transports the tube section (82) downwards through the chute (56), a welding and severing unit (28) for welding the tube section (82) along transversely running seams and for severing a lower end of the tube section (82), and a contactlessly operating sensor (88) for actuating the welding and severing unit (28), characterized in that a welding cycle for welding the tube section (82) or a severing and welding cycle for welding the tube section (82) and for severing the lower end can be triggered selectively by way of different actuation of the sensor (88).
- Apparatus according to Claim 1, characterized in that the welding cycle and the severing and welding cycle can be triggered by way of a different length of time period for the actuation of the sensor (88).
- Apparatus according to one of the preceding claims, characterized in that, after triggering of the welding cycle or the severing and welding cycle, first of all transport of the tube section (82) can be triggered by way of a further actuation of the sensor (88), it being possible for the length of the transport path to be controlled by the time duration of the actuation of the sensor (88).
- Apparatus according to one of the preceding claims, characterized in that, during the welding cycle, the welding and severing unit (28) welds the tube section (82) along a welded seam which runs transversely over the tube section (82) and closes a bag which is arranged below the welded seam at the upper end.
- Apparatus according to one of the preceding claims, characterized in that, during the severing and welding cycle, the welding and severing unit (28) first of all welds the tube section (82) along a welded seam which runs transversely over the tube section (82) and closes a bag which is arranged below the welded seam at the upper end, in that the welding and severing unit (28) subsequently severs a lower end of the tube section (82) along a severing seam which is arranged above the welded seam, and in that the welding and severing unit (28) finally welds the remaining part of the tube section (82) along a welded seam which is arranged above the severing seam.
- Apparatus according to one of the preceding claims, characterized in that, during the severing and welding cycle, a transport direction of the conveying unit (30) can be reversed in order to sever the lower end of the tube section (82).
- Apparatus according to one of the preceding claims, characterized in that the sensor (88) is an infrared sensor.
- Apparatus according to one of the preceding claims, characterized in that the sensor (88) comprises a transmitter (92) and a receiver (94) which receives radiation which is emitted by the transmitter (92) and is reflected to the receiver (94) by an object in the radiation path of the transmitter (92) and supplies a signal to a controller (48) which activates the welding and severing unit (28) and the conveying unit (30).
- Apparatus according to one of the preceding claims, characterized in that the sensor (88) is a sensor which works in pulse operation.
- Apparatus according to one of the preceding claims, characterized in that the sensor (88) is arranged on an upper side of the housing (12).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210004189 DE102012004189A1 (en) | 2012-02-21 | 2012-02-21 | Device for welding waste |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2631186A1 EP2631186A1 (en) | 2013-08-28 |
EP2631186B1 true EP2631186B1 (en) | 2014-09-03 |
Family
ID=47683509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20130000694 Active EP2631186B1 (en) | 2012-02-21 | 2013-02-09 | Device for thermosealing waste |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2631186B1 (en) |
DE (1) | DE102012004189A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2520568A (en) * | 2013-11-26 | 2015-05-27 | Alveier Ltd | Sealing apparatus |
DE202014005774U1 (en) | 2014-07-17 | 2014-08-01 | Berner International Gmbh | Safety workbench with waste welding device |
CN109051349A (en) * | 2018-07-27 | 2018-12-21 | čå·åøåÆę°å®éŖåØē©č®¾å¤ęéå ¬åø | A kind of animal litter vacuum packaging disposition cabinet |
WO2022232023A1 (en) * | 2021-04-30 | 2022-11-03 | Momentum Product Solutions, Llc | Odorless diaper bin |
NL2031637B1 (en) * | 2022-04-20 | 2023-11-07 | Mangas Ip B V | System and method for sealing waste products |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE381172B (en) | 1973-01-03 | 1975-12-01 | Pactosan Ab | DEVICE FOR PACKING WASTE IN A HOSE |
JPH06156601A (en) * | 1992-11-25 | 1994-06-03 | Matsushita Electric Works Ltd | Raw garbage receiving container |
ATE193255T1 (en) | 1995-11-17 | 2000-06-15 | Captiva Holding | DEVICE FOR COLLECTING AND LOCKING UP HOSPITAL WASTE AND HOUSEHOLD WASTE |
US6370847B1 (en) * | 2000-10-02 | 2002-04-16 | Tim Allan Nygaard Jensen | Sealable diaper-disposal system and method |
FR2841229B1 (en) * | 2002-06-19 | 2006-05-26 | Aa Man | DEVICE FOR COLLECTING WASTE |
JP2005231670A (en) * | 2004-02-19 | 2005-09-02 | Inax Corp | Dust bagging device |
-
2012
- 2012-02-21 DE DE201210004189 patent/DE102012004189A1/en not_active Withdrawn
-
2013
- 2013-02-09 EP EP20130000694 patent/EP2631186B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2631186A1 (en) | 2013-08-28 |
DE102012004189A1 (en) | 2013-08-22 |
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