EP3115304B1 - Vacuum device with welded beam cover - Google Patents

Vacuum device with welded beam cover Download PDF

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Publication number
EP3115304B1
EP3115304B1 EP16174507.0A EP16174507A EP3115304B1 EP 3115304 B1 EP3115304 B1 EP 3115304B1 EP 16174507 A EP16174507 A EP 16174507A EP 3115304 B1 EP3115304 B1 EP 3115304B1
Authority
EP
European Patent Office
Prior art keywords
welding
bearing
welding bar
vacuum chamber
vacuum
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
Application number
EP16174507.0A
Other languages
German (de)
French (fr)
Other versions
EP3115304A1 (en
Inventor
Martin Wismer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
V-Zug AG
Original Assignee
V-Zug AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by V-Zug AG filed Critical V-Zug AG
Priority to SI201630475T priority Critical patent/SI3115304T1/en
Publication of EP3115304A1 publication Critical patent/EP3115304A1/en
Application granted granted Critical
Publication of EP3115304B1 publication Critical patent/EP3115304B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146—Closing 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or 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
    • 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
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance
    • 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
    • B65B59/003—Arrangements to enable adjustments related to the packaging material

Definitions

  • the invention relates to a vacuum apparatus for welding a container inserted in the vacuum chamber, in particular a bag, according to the preamble of claim 1.
  • Vacuum sealers are known from the prior art.
  • DE 10 2013 017 248 describes a Vakuumierschublade for vacuuming food, with a closable vacuum chamber and disposed within the vacuum chamber welding beam.
  • the vacuuming drawer is designed in such a way that the vacuum chamber automatically opens when the drawer is pulled out and / or is automatically closed when it is pushed in.
  • the Vakuumier réelle has at least a first bearing shoulder. This extends along a longitudinal side of the welding bar and is arranged so that it supports the container. As a result, the container is stabilized before and / or during welding.
  • the first bearing shoulder is arranged in the closing direction at least partially closer to the abutment than the welding beam.
  • the distances "in the closing direction” mean the distances of the components, when the components are projected onto a line that extends parallel to the closing direction.
  • a line is thus initially defined parallel to the closing direction (if the closing movement is a rectilinear closing movement, this line is a straight line).
  • the closing beam, the bearing shoulder (s) and the anvil are projected in directions perpendicular and radial to this line on the line.
  • at least one projected point of each bearing shoulder is now closer to the projected points of the anvil than the projected points of the weld beam.
  • This arrangement has the advantage that in the ready position of the device, the container to be welded on the bearing shoulder, rather than on the welding bar itself, is supported. Only when the device goes into the operating position, the container comes into contact with the welding bar.
  • the vacuum chamber forms a trough for receiving the "useful part" of the container, i. that part of the container in which the product to be packaged by the container is arranged.
  • the welding device is arranged on an edge of this trough, so that the edge of the container to be closed can be inserted into the welding device.
  • the first bearing shoulder is located between the welding beam and the trough.
  • the kink in the container arises in particular in that the part of the container which is not arranged on the bearing shoulder, lies in the mentioned trough.
  • the kink leads in particular to the fact that a portion of the container contents, in particular foods such as sauces or other liquids, barely or not at all over the kink during the vacuuming process emotional.
  • the welding bar is disposed below the anvil and moves upwardly against the anvil during the transition from the standby to the operative position while the bearing shoulder is stationary, i. does not move.
  • the welding bar can move independently of the bearing shoulder and the movements caused by the welding bar are transferred only to a reduced extent to the container to be welded.
  • the process stability is thus increased because, thanks to the bearing shoulder, the container experiences less movement than if the container were supported directly on the welding beam.
  • the upper side of the welding bar is arranged lower than the upper side of the bearing shoulder.
  • a deepest portion of said trough may be lower than an upper surface of the bearing shoulder, thereby promoting the formation of a kink in the container at the bearing shoulder.
  • the Vakuumier réelle in addition to the first bearing shoulder on a second bearing shoulder. This is arranged on one of the first bearing shoulder opposite side along the longitudinal direction of the welding beam. In this way, the container can be supported on both sides of the welding bar.
  • the upper side of the welding bar is in the ready position arranged lower than the top of the first bearing shoulder and / or the second bearing shoulder.
  • the Vakuumier réelle has at least one plunger on which the welding bar is supported.
  • the bearing shoulder or bearing shoulders is or are held by a support device.
  • the support device is supported on the bottom region of the vacuum chamber, in particular loosely supported, and is positioned laterally (i.e., in the direction perpendicular to the closing direction) by the ram. This arrangement aligns in particular the bearing shoulder (s) on the plunger (s) and thus on the welding beam.
  • the device has both a first and a second bearing shoulder
  • said support device can support both the first and the second bearing shoulder, so that the two bearing shoulders and the support device form a unit.
  • the welding bar is removable from the rams, i. it can be non-destructively separated from and attached to these, and the bearing shoulders and the support device can be removed after removing the welding bar the vacuuming unit as a unit (and non-destructive), especially without tools.
  • the Vakuumier réelle a terminal, wherein the terminal is arranged in particular on the second bearing shoulder.
  • the user can fix the container inserted in the vacuum chamber. This increases the process stability, because with vibrations, which are caused in particular by the operation of the Vakuuumier réelles, the container moves less.
  • the clamp is connected to the second bearing shoulder, in particular detachable.
  • the second bearing shoulder on a holder for receiving the terminal and the terminal is reversibly inserted into the holder and this removable.
  • the clamp can also be fixedly connected to the bearing shoulder, in particular by a force and / or material connection, for example by gluing or screwing.
  • the welding bar is in the ready position, in particular, when the user can remove the container from the vacuum chamber or insert it into the vacuum chamber or while the vacuum chamber is unused. As soon as the vacuuming process is initiated and the vacuum chamber pressure is lowered by sucking off the air, the welding bar reaches the operating position at a certain pressure value.
  • the container does not come into direct contact with the welding bar in the ready position because the container rests on the upper side of the bearing shoulder (s).
  • the “top” of the vacuum chamber is that side to understand which faces the vacuum chamber bottom surface in the vacuum chamber and is formed in a particular embodiment by a vacuum chamber lid.
  • the upper side of the welding bar and the upper side of the bearing shoulder are those sides which, in the relevant component, are closest to the upper side of the vacuum chamber and, in particular, are arranged approximately parallel with the upper side of the vacuum chamber.
  • the "top” of the vacuum chamber corresponds to that side which is at the top when the device is installed as intended.
  • the first and the second bearing shoulder at end portions (ie on the short sides) of the welding beam are connected together and form a frame around the welding beam, through which the Welding bar moved at the transition between the standby and the operating position. This improves the support of the container.
  • the Vakuumier réelle can be part of a household appliance and arranged in a drawer of the same.
  • the household appliance is particularly suitable for installation in a kitchen furniture or a kitchenette.
  • Fig. 1 . 5 and 6 show a Vakuumier réelle 1 for welding a container, in particular a bag made of plastic.
  • the apparatus has a vacuum chamber 2 with a vacuum chamber bottom surface 3 and a vacuum chamber lid 13 defining the top of the apparatus.
  • a vacuum pump 4 in Fig. 1 only shown schematically 13 air is sucked through an air outlet opening 41 from the vacuum chamber 2 during a Vakuumiervorgangs with closed vacuum chamber lid.
  • the vacuum chamber 2 forms a trough 42 for receiving the useful part of the container to be welded, i. that part of the container in which the product to be packaged by the container is arranged.
  • the trough 42 preferably has a depth of at least 5 cm, and a width and length of at least 10 cm, preferably more. The usable depth of the trough 42 may be reduced to accommodate the size of the container by a support device described below.
  • a welding device 5 is arranged on a side edge of the trough 42, which serves to weld an opening of the container inserted in the device.
  • the welding device 5 has a heatable welding bar 6 and plunger 8 (FIG. Fig. 6 ), wherein the welding bar 6 is supported on the plunger 8.
  • the plunger 8 are movably mounted. With a three-way valve, the pressure difference between the environment and the vacuum chamber is applied, so that they are at negative pressure in the vacuum chamber up in the z-direction ( Fig. 1 ), ie in the closing direction, move.
  • a container which is inserted into the vacuum chamber 2, is to be arranged by the user, that the point of the container to be welded is clamped between the welding bar 6 and an abutment 12 during the vacuuming process.
  • the anvil 12 is arranged on the vacuum chamber lid 13 in the present embodiment. It is designed in particular as a welding pad. It is, like the welding bar 6, elongate, with a length which is normally at least as large as or greater than the length of the welding bar 6.
  • the Vakuumier réelle has in its vacuum chamber 2 on a welding beam cover 7. This forms a bearing for the container to be welded in the region of the welding bar 6, but leaves the welding bar 6 free upwards so that it can contact the container during welding.
  • the welding beam cover 7 forms a first and a second bearing shoulder 7a and 7b, respectively.
  • the bearing shoulders 7a, 7b extend along the opposite longitudinal sides of the welding beam 6 and run parallel to this.
  • the bearing shoulders 7a, 7b are, in the closing direction z ( Fig. 1 ), in the above-mentioned readiness position closer to the abutment 12 arranged as the welding beam 6.
  • the bearing shoulders 7a, 7b, in the closing direction z, in the standby position the abutment 12 at least 1 mm closer than the welding beam. 6
  • the first bearing shoulder 7a is disposed between the trough 42 and the welding bar 6.
  • the second bearing shoulder 7b is located on the first bearing shoulder 7a and the trough 42 opposite side of the welding beam. 6
  • each bearing shoulder 7a, 7b is preferably equal to or greater than the length of the welding beam 6.
  • the upper side 17 of the welding beam cover 7, perpendicular to the longitudinal direction of the welding beam 6, has a greater width 16 than the welding beam 6.
  • the upper side of the first bearing shoulder 7a has a rounding 14, which drops towards the depression 42.
  • the container undergoes a kink, because that part of the container, which is arranged on the first bearing shoulder 7a, is higher than the useful part of the container, which in the region of the trough 42 on the vacuum chamber bottom 3 or on a supporting device 18. 22, which will be described below, is supported.
  • the kink of the container is located farther away from the welding bar 6 by a distance 15 than if the first welding bar cover were missing and the container would rest directly on the welding bar 6.
  • This kink forms a flow resistance for the contents of the container, for example, for flowable food, which are arranged inside the bag. This reduces the risk that, in vibrations generated by the operation of the Vakuumier réelles 1, or due to pressure differences in vacuuming, substances from the interior of the container to the welding beam or even beyond reach.
  • the welding bars 7a, 7b with their webs 7c, 7d form a frame through which the welding bar 6 can pass during the transition from the standby position into the operating position.
  • the Vakuumier réelle 1 is in the standby position when no vacuuming takes place, or when the vacuum chamber lid 13 is opened and the container placed in the vacuum chamber 2 or this is removed.
  • the upper side of the welding bar 6 is located below the upper side 17 of the welding bar cover 7, in particular below the surfaces of the two bearing shoulders 7a, 7b.
  • the welding bar touches the inserted in the vacuum chamber 2 container usually not because it rests on the top 17 of the bearing shoulders 7a, 7b.
  • a clamp 10 is arranged on the welding beam cover 7, preferably on the second bearing shoulder 7b.
  • the clamp 10 is arranged on the side of the welding bar 6 opposite the trough 42 and the first bearing shoulder 7a.
  • the welding bar 6 is thus between the clamp 10 and the first bearing shoulder 7 a, as well as between the clamp 10 and the trough 42.
  • the clamp 10 serves to hold the container on that side of the container at which the opening of the container is arranged and the air exits the container during the vacuuming process to hold.
  • the container can be easily positioned by the user, and the risk that the container shifts during the Vakuumiervorgangs within the vacuum chamber 2, for example due to vibrations of the Vakuumier réelles 1, is reduced.
  • the clamp 10 is in particular a bent sheet metal, for example made of chrome steel, spring steel, aluminum and / or plastic.
  • the clamp 10 may be fixedly connected to the welding beam cover 7, for example by force locking by screws, as in Fig. 4 shown.
  • the clamp 10 may also be held by a support arranged on the welding beam cover 5, such that the clamp 10 can be reversibly removed from the mounting by means of a movement without the aid of tools and be reinserted therein.
  • the terminal 10 can be easily replaced as a single part.
  • Fig. 2 and 6 show the welding beam cover 7.
  • the welding beam cover has a support device 9, with which it is supported on a shoulder 3a of the vacuum chamber bottom surface 3 (see. Fig. 6 ).
  • the support on the vacuum chamber bottom surface 3 causes only a few vibrations and movements of the Vakuumier réelles 1, in particular of the moving welding bar 6, are transmitted to the welding beam cover 7.
  • the support device 9 is arranged such that it surrounds the plunger 8, so that the support device 9 by the plunger 8 laterally (ie in the directions x and y according to Fig. 1 ) is held. This arrangement is also in the FIGS. 3 and 4 seen.
  • the welding beam cover 7 is first inserted and then the welding beam 6 is mounted through the gap 11 from above. To remove the welding beam cover 7, first the welding bar 6 and then the welding beam cover 7 can be removed from the vacuuming device 1. Alternatively, the welding beam cover 7 can be removed together with the welding beam 6, since with raising the welding beam cover and the welding beam 6 can be separated from the rams 8.
  • Fig. 3 shows the Vakuumier réelle 1 from above in a section along line III-III of Fig. 6 ,
  • two plungers 8 are arranged, on which the welding bar 6 is supported and that supply the welding bar with electricity.
  • the plungers 8 are, as already mentioned, surrounded by the support device 9 and hold them laterally, ie against movements in the horizontal direction x, y.
  • Fig. 4 shows the welding bar cover 7 with the clamp 10 from below, wherein the plunger 8 are also visible.
  • the clamp 10 is mounted to the weld bar cover 7 with two screws 19.
  • the vacuum apparatus 1 has a supporting device 18-22 for supporting the container to be vacuumed in the region of the trough 42.
  • the support device 18 - 22 can be removed from the vacuum chamber. It is inserted without attachment in the vacuum chamber 2 and can thus be removed from the vacuum chamber 2 in a simple manner.
  • the support device 18 - 22 can be used in at least two different positions, namely at least in a first and in a second position, in the vacuum chamber 2.
  • FIGS. 5 and 6 show the support device 18-22 in their first position
  • FIGS. 7 and 8 show the support device 18 - 22 in its second position.
  • the support device 18-22 may be inserted into the vacuum chamber 2 so as to form in the well 42 a support portion 183 for the container, i. an area which is suitable for supporting the useful part of the container during welding.
  • the support area 183 is arranged higher than in the second position.
  • the support device 18-22 has a support plate 18 with a first side 181 and with a second side 182.
  • the Support plate forms the support portion 183 for receiving the container in the region of the trough 42nd
  • the support portion 183 is spaced from the vacuum chamber bottom surface 3 by the distance 23a (see FIG Fig. 6 ), in particular measured at the lowest point of the vacuum chamber bottom surface 3.
  • the container to be vacuumed is located on the first side 181 of the support plate 18 and rests on this in the support region 183.
  • the distance 23a is advantageously at least 20 mm, in particular at least 40 mm.
  • the first side 181 of the support plate 18 is directed in the first position upwards in the direction of the vacuum chamber cover 13.
  • the first position of the support plate 18 is used for smaller containers, so that the smaller containers come to lie closer to the welding bar 6, as if they were located directly on the vacuum chamber bottom surface 3.
  • the support device 18-22 comprises in addition to the support plate 18 in the present embodiment at least one, preferably two gripping openings 19, a plurality of air passage openings 20, a frame reinforcement 21 and a transverse plate 22.
  • a user can reach with his fingers into the gripping openings 19 to change the support device 18-22 from the first position to the second position, or vice versa.
  • the user can also remove the support device 18-22 completely from the vacuum chamber 2 and insert it back into it.
  • FIGS. 7 and 8 show the supporting device 18 - 22 in the second position, wherein in the second position, the support plate 18 is spaced with its support portion 183 less far from the vacuum chamber bottom surface 3 as in the first position.
  • the support device 18 - 22 is supported in the second position via edge reinforcements 21 or other spacers on the vacuum chamber bottom surface 3 in such a way that a distance corresponding to a distance 23 b (FIG. Fig. 8 ) remains between the vacuum chamber bottom surface 3 and the support plate 18.
  • the distance 23b in the second position of the support device 18-22 is substantially smaller, in particular at least ten times smaller, than the distance 23a in the first position according to FIG Fig. 6 ,
  • the distance 23b is not zero, in particular at least 1 mm, the user can reach into the gripping openings 19 even in the second position and remove the support device 18-22 with his fingers or nails from the vacuum chamber 2 without problems.
  • the distance 23b should also not be too large, so that unnecessary space in the trough 42 is wasted. Therefore, the distance 23b is preferably at most 10 mm.
  • the welding bar 6 at least in its operating position, is arranged higher than the support area 183, which reduces the risk that the contents of the container will reach the weld seam or beyond.
  • the air passage openings 20 make it possible during the vacuuming process to evacuate the air between the support device 18 - 22 and the vacuum chamber bottom surface 3 with little resistance from the vacuum chamber 2.
  • the edge reinforcements 21 are arranged on the edge of the supporting device 18-22. They can be arranged at the edge, for example, continuously, in sections or only at the corner.
  • the edge reinforcements 21 consist at least partially of plastic, to the slip resistance of the support device 18 - 22 on the vacuum chamber bottom 3 to improve and prevent scratching of the vacuum chamber bottom 3.
  • edge reinforcements 21 may be dispensed with, and the support 18 - 22 is bent near its edges to form one or more spacers, so that a user in the second position can still reach into the gripping apertures 19 with their fingers.
  • the transverse plate 22 is transverse to the support plate 18, in particular at an angle between 20 and 70 ° to the support plate 18th
  • the support device 18-22 In the second position ( Fig. 7, 8 ), the support device 18-22 preferably extends with an accuracy of +/- 10 °, in particular within +/- 5 °, parallel to the respectively adjacent region of the vacuum chamber bottom 3. Alternatively or additionally, the distance of the support device 18-22 from the vacuum chamber bottom 3 everywhere below 1 cm. By one or both of these measures, the support plate in the second position occupies little space.
  • the support device 18-22, in particular the support plate 18, is supported on an edge region 44 of the trough 42, which is higher than the support region 43.
  • the edge region 44 is covered at the top by the welding beam cover 7 of the welding device 5, so that the edge of the supporting device 18-22 lying there is barely visible and protected.
  • the support plate 19 extends in the first and the second position, preferably with an accuracy of +/- 10 °, in particular within +/- 5 °, horizontal and forms in the embodiment shown a flat support for the container to be vacuumed.
  • Fig. 9 shows the support device 18 - 22 in its first position and the Fig. 10 shows the support device 18 - 22 in its second position from above.
  • the support plate 18 and the transverse plate 22 consist at least partially of a metal, in particular chromium steel or aluminum, or of a plastic, in particular polypropylene.
  • the support plate 18 and the transverse plate 22 are formed by an angled sheet, in particular of two substantially flat portions of an angled in the region of the transition of the two plates sheet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Vacuum Packaging (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft ein Vakuumiergerät zum Verschweissen eines in die Vakuumkammer eingelegten Behältnisses, insbesondere eines Beutels, gemäss Oberbegriff von Anspruch 1.The invention relates to a vacuum apparatus for welding a container inserted in the vacuum chamber, in particular a bag, according to the preamble of claim 1.

Hintergrundbackground

Vakuumiergeräte sind aus dem Stand der Technik bekannt. In DE 10 2013 017 248 wird eine Vakuumierschublade zum Vakuumieren von Lebensmitteln beschrieben, mit einer verschliessbaren Vakuumkammer und einem innerhalb der Vakuumkammer angeordneten Schweissbalken. Die Vakuumierschublade ist derart ausgestaltet, dass die Vakuumkammer beim Ausziehen der Schublade automatisch geöffnet und/oder beim Einschieben automatisch geschlossen wird.Vacuum sealers are known from the prior art. In DE 10 2013 017 248 describes a Vakuumierschublade for vacuuming food, with a closable vacuum chamber and disposed within the vacuum chamber welding beam. The vacuuming drawer is designed in such a way that the vacuum chamber automatically opens when the drawer is pulled out and / or is automatically closed when it is pushed in.

In DE 10 2013 014 656 wird ein Vakuumiergerät beschrieben, bei welchem der Schweissbalken mittels wenigstens einer Verstelleinheit zwischen einer geöffneten Stellung zum Vakuumieren des Beutels und einer Schweissstellung zum Verschweissen des Beutels bewegt werden kann.In DE 10 2013 014 656 a Vakuumiergerät is described in which the welding bar can be moved by means of at least one adjustment between an open position for vacuuming the bag and a welding position for welding the bag.

In DE 901 4934 U1 wird eine Verpackungsmaschine offenbart, bei welcher während des Vakuumiervorgangs ein Schutzgas in den Beutel eingeleitet wird. Zum Schluss des Verpackungsprozesses wird der Beutel an einem Siegelbalken versiegelt.In DE 901 4934 U1 discloses a packaging machine in which a protective gas is introduced into the bag during the vacuuming process. At the end of the packaging process, the bag is sealed to a sealing bar.

In WO 02/064429 wird ein Vakuumiergerät mit einem Schweissbalken gezeigt. Beim Erzeugen des Vakuums bewegt sich der Schweissbalken nach oben und wird gegen eine Metallschiene gedrückt.In WO 02/064429 A vacuum sealer with a welding bar is shown. When creating the vacuum, the welding bar moves upwards and is pressed against a metal rail.

Es besteht das Problem, dass bei einer Vorrichtung gemäss Stand der Technik während des Vakuumiervorgangs der Beutel sowie der Beutelinhalt sich ungünstig bewegen bzw. verschieben können und/oder dass ein Teil des Inhalts des Beutels austreten und dabei die Verschweissung behindern oder sogar die Apparatur verschmutzen kann.There is a problem that in a prior art device during the vacuuming process the bag as well as the bag contents may move or shift unfavorably and / or that a part of the contents of the bag may escape, hindering the welding or even soiling the apparatus.

Darstellung der ErfindungPresentation of the invention

Es ist Aufgabe der vorliegenden Erfindung die Prozessstabilität des Vakuumiervorgangs zu verbessern.It is an object of the present invention to improve the process stability of the vacuuming process.

Diese Aufgabe wird vom Vakuumiergerät gemäss Anspruch 1 erfüllt. Demgemäss umfasst das Vakuumiergerät:

  • Eine Vakuumkammer, welche eine Vakuumkammerbodenfläche aufweist.
  • Eine Vakuumpumpe zum Evakuieren der Vakuumkammer.
  • Eine in der Vakuumkammer angeordnete Schweissvorrichtung mit einem heizbaren Schweissbalken und einem Gegenlager. Der Schweissbalken und das Gegenlager sind relativ zueinander beweglich, und zwar entlang einer Schliessrichtung zwischen einer Bereitschafts- und einer Betriebsstellung. Sie sind in der Bereitschaftsstellung voneinander beabstandet, während sie in der Betriebsstellung zum Einklemmen und verschweissen des in die Vakuumkammer eingelegten Behältnisses gegeneinander gedrückt sind.
This object is fulfilled by the vacuuming apparatus according to claim 1. Accordingly, the vacuum apparatus comprises:
  • A vacuum chamber having a vacuum chamber bottom surface.
  • A vacuum pump for evacuating the vacuum chamber.
  • A arranged in the vacuum chamber welding device with a heatable welding beam and an abutment. The welding beam and the counter bearing are movable relative to each other, along a closing direction between a standby and an operating position. They are spaced from each other in the ready position, while they are pressed against each other in the operating position for clamping and welding of the container inserted into the vacuum chamber.

Weiter besitzt das Vakuumiergerät mindestens eine erste Lagerschulter. Diese erstreckt sich entlang einer Längsseite des Schweissbalkens und ist derart angeordnet, dass sie das Behältnis stützt. Dadurch wird das Behältnis vor und/oder während dem Schweissen stabilisiert.Next, the Vakuumiergerät has at least a first bearing shoulder. This extends along a longitudinal side of the welding bar and is arranged so that it supports the container. As a result, the container is stabilized before and / or during welding.

In der Bereitschaftsstellung ist die erste Lagerschulter in Schliessrichtung zumindest teilweise näher am Gegenlager angeordnet als der Schweissbalken.In the standby position, the first bearing shoulder is arranged in the closing direction at least partially closer to the abutment than the welding beam.

Unter den Abständen "in Schliessrichtung" sind dabei die Abstände der Komponenten zu verstehen, wenn die Komponenten auf eine Linie projiziert werden, die sich parallel zur Schliessrichtung erstreckt. Mit anderen Worten wird also zunächst eine Linie parallel zur Schliessrichtung definiert (wenn die Schliessbewegung eine geradlinige Schliessbewegung ist, handelt es sich bei dieser Linie um eine Gerade). Sodann werden der Schliessbalken, die Lagerschulter(n) und das Gegenlager in Richtungen senkrecht und radial zu dieser Linie auf die Linie projiziert. In der Bereitschaftsstellung liegt nun mindestens ein projizierter Punkt jeder Lagerschulter näher an den projizierten Punkten des Gegenlagers als die projizierten Punkte des Schweissbalkens.The distances "in the closing direction" mean the distances of the components, when the components are projected onto a line that extends parallel to the closing direction. In other words, a line is thus initially defined parallel to the closing direction (if the closing movement is a rectilinear closing movement, this line is a straight line). Then the closing beam, the bearing shoulder (s) and the anvil are projected in directions perpendicular and radial to this line on the line. In the standby position, at least one projected point of each bearing shoulder is now closer to the projected points of the anvil than the projected points of the weld beam.

Diese Anordnung hat den Vorteil, dass in der Bereitschaftsstellung des Geräts das zu verschweissende Behältnis auf der Lagerschulter, anstatt auf dem Schweissbalken selbst, abgestützt ist. Erst wenn das Gerät in die Betriebsstellung übergeht, kommt das Behältnis mit dem Schweissbalken in Kontakt.This arrangement has the advantage that in the ready position of the device, the container to be welded on the bearing shoulder, rather than on the welding bar itself, is supported. Only when the device goes into the operating position, the container comes into contact with the welding bar.

In einer vorteilhaften Ausführung bildet die Vakuumkammer eine Mulde zur Aufnahme des "Nutzteils" des Behältnisses, d.h. desjenigen Teils des Behältnisses, in welchem das vom Behältnis zu verpackende Gut angeordnet ist. Die Schweissvorrichtung ist an einem Rand dieser Mulde angeordnet, so dass der zu verschliessende Rand des Behältnisses in die Schweissvorrichtung eingelegt werden kann. Die erste Lagerschulter ist zwischen dem Schweissbalken und der Mulde angeordnet. So entsteht im Bereich der ersten Lagerschulter vor der Schweissnaht ein Knick im Behältnis, der einem Austreten des im Behältnis aufgenommenen Guts zur Schweissnaht hin entgegenwirkt.In an advantageous embodiment, the vacuum chamber forms a trough for receiving the "useful part" of the container, i. that part of the container in which the product to be packaged by the container is arranged. The welding device is arranged on an edge of this trough, so that the edge of the container to be closed can be inserted into the welding device. The first bearing shoulder is located between the welding beam and the trough. Thus, in the region of the first bearing shoulder in front of the weld seam, a kink arises in the container, which counteracts leakage of the material received in the container towards the weld seam.

Der Knick im Behältnis entsteht insbesondere dadurch, dass derjenige Teil des Behältnisses, welcher nicht auf der Lagerschulter angeordnet ist, in der erwähnten Mulde liegt. Der Knick führt insbesondere dazu, dass ein Teil des Behältnisinhalts, insbesondere Lebensmittel wie Saucen oder andere Flüssigkeiten, sich während des Vakuumiervorgangs kaum oder gar nicht über den Knick bewegt. Indem die erste Lagerschulter zwischen dem Schweissbalken und der Mulde angeordnet ist und somit der Knick von der zu verschweissenden Stelle beabstandet ist, wird das Risiko reduziert, dass, aufgrund von durch das Vakuumiergerät verursachten Bewegungen und Vibrationen, ein Teil des Behältnisinhalts aus dem Behältnis austritt und die Apparatur des Vakuumiergeräts verschmutzt oder den Schweissvorgang stört.The kink in the container arises in particular in that the part of the container which is not arranged on the bearing shoulder, lies in the mentioned trough. The kink leads in particular to the fact that a portion of the container contents, in particular foods such as sauces or other liquids, barely or not at all over the kink during the vacuuming process emotional. By the first bearing shoulder between the welding bar and the trough is arranged and thus the kink is spaced from the point to be welded, the risk is reduced that, due to caused by the vacuuming device movements and vibrations, a part of the container contents leaking from the container and the apparatus of the vacuuming device is dirty or disturbs the welding process.

Vorteilhaft ist der Schweissbalken unterhalb des Gegenlagers angeordnet und bewegt sich beim Übergang von der Bereitschafts- in die Betriebsstellung nach oben gegen das Gegenlager, während die Lagerschulter unbewegt ist, d.h. sich nicht bewegt. Dadurch kann sich der Schweissbalken unabhängig von der Lagerschulter bewegen und die durch den Schweissbalken versursachten Bewegungen werden nur in reduziertem Masse auf das zu verschweissende Behältnis übertragen. Die Prozessstabilität wird somit erhöht, weil dank der Lagerschulter das Behältnis weniger Bewegung erfährt, als wenn das Behältnis direkt auf dem Schweissbalken abgestützt wäre.Advantageously, the welding bar is disposed below the anvil and moves upwardly against the anvil during the transition from the standby to the operative position while the bearing shoulder is stationary, i. does not move. As a result, the welding bar can move independently of the bearing shoulder and the movements caused by the welding bar are transferred only to a reduced extent to the container to be welded. The process stability is thus increased because, thanks to the bearing shoulder, the container experiences less movement than if the container were supported directly on the welding beam.

In einer weiteren besonderen Ausführung ist in der Bereitschaftsstellung die Oberseite des Schweissbalkens tiefer angeordnet als die Oberseite der Lagerschulter.In a further particular embodiment, in the standby position, the upper side of the welding bar is arranged lower than the upper side of the bearing shoulder.

Weiter kann ein tiefster Bereich der erwähnten Mulde tiefer liegen als eine Oberseite der Lagerschulter, wodurch die Bildung eines Knicks im Behältnis bei der Lagerschulter gefördert wird.Further, a deepest portion of said trough may be lower than an upper surface of the bearing shoulder, thereby promoting the formation of a kink in the container at the bearing shoulder.

Vorteilhaft weist das Vakuumiergerät zusätzlich zur ersten Lagerschulter eine zweite Lagerschulter auf. Diese ist auf einer der ersten Lagerschulter gegenüber liegenden Seite entlang der Längsrichtung des Schweissbalkens angeordnet. Auf diese Weise kann das Behältnis auf beiden Seiten des Schweissbalkens gestützt werden.Advantageously, the Vakuumiergerät in addition to the first bearing shoulder on a second bearing shoulder. This is arranged on one of the first bearing shoulder opposite side along the longitudinal direction of the welding beam. In this way, the container can be supported on both sides of the welding bar.

In einer weiteren besonderen Ausführung ist in der Bereitschaftsstellung die Oberseite des Schweissbalkens tiefer angeordnet als die Oberseite der ersten Lagerschulter und/oder der zweiten Lagerschulter.In a further particular embodiment, the upper side of the welding bar is in the ready position arranged lower than the top of the first bearing shoulder and / or the second bearing shoulder.

In einer Ausführung weist das Vakuumiergerät mindestens einen Stössel auf, auf welchem der Schweissbalken abgestützt ist. Zudem wird bzw. werden die Lagerschulter bzw. Lagerschultern von einer Stützvorrichtung gehalten. Die Stützvorrichtung ist auf dem Bodenbereich der Vakuumkammer abgestützt, insbesondere lose abgestützt, und wird seitlich (d.h. in der Richtung senkrecht zur Schliessrichtung) durch den Stössel positioniert. Diese Anordnung richtet insbesondere die Lagerschulter(n) an den Stössel(n) und somit am Schweissbalken aus.In one embodiment, the Vakuumiergerät has at least one plunger on which the welding bar is supported. In addition, the bearing shoulder or bearing shoulders is or are held by a support device. The support device is supported on the bottom region of the vacuum chamber, in particular loosely supported, and is positioned laterally (i.e., in the direction perpendicular to the closing direction) by the ram. This arrangement aligns in particular the bearing shoulder (s) on the plunger (s) and thus on the welding beam.

Wenn das Gerät sowohl eine erste als auch eine zweite Lagerschulter besitzt, kann die erwähnte Stützvorrichtung sowohl die erste als auch die zweite Lagerschulter tragen, so dass die beiden Lagerschultern und die Stützvorrichtung eine Einheit bilden. Vorteilhaft ist in diesem Falle der Schweissbalken von den Stösseln abnehmbar, d.h. er kann zerstörungsfrei von diesen getrennt und wieder an diesen befestigt werden, und die Lagerschultern und die Stützvorrichtung können nach Abnehmen des Schweissbalkens dem Vakuumiergerät als Einheit (und zerstörungsfrei) entnommen werden, insbesondere ohne Werkzeug.If the device has both a first and a second bearing shoulder, said support device can support both the first and the second bearing shoulder, so that the two bearing shoulders and the support device form a unit. Advantageously, in this case, the welding bar is removable from the rams, i. it can be non-destructively separated from and attached to these, and the bearing shoulders and the support device can be removed after removing the welding bar the vacuuming unit as a unit (and non-destructive), especially without tools.

Vorteilhaft weist das Vakuumiergerät eine Klemme auf, wobei die Klemme insbesondere an der zweiten Lagerschulter angeordnet ist.Advantageously, the Vakuumiergerät a terminal, wherein the terminal is arranged in particular on the second bearing shoulder.

Mit der Klemme kann der Benutzer das in der Vakuumkammer eingelegte Behältnis fixieren. Dies erhöht die Prozessstabilität, weil bei Vibrationen, welche insbesondere durch den Betrieb des Vakuuumiergeräts verursacht werden, das Behältnis sich weniger verschiebt.With the clamp, the user can fix the container inserted in the vacuum chamber. This increases the process stability, because with vibrations, which are caused in particular by the operation of the Vakuuumiergeräts, the container moves less.

Die Klemme ist mit der zweiten Lagerschulter verbunden, insbesondere lösbar. In einer Ausführung weist die zweite Lagerschulter eine Halterung zur Aufnahme der Klemme auf und die Klemme ist reversibel in die Halterung einsetzbar und dieser entnehmbar.The clamp is connected to the second bearing shoulder, in particular detachable. In one embodiment, the second bearing shoulder on a holder for receiving the terminal and the terminal is reversibly inserted into the holder and this removable.

Diese Ausgestaltung ermöglicht es, dass die Klemme, beispielsweise bei Beschädigungen oder zur Reinigung, ausgetauscht oder entnommen werden kann. Alternativ kann die Klemme auch fix mit der Lagerschulter verbunden sein, insbesondere durch eine Kraft- und/oder stoffschlüssige Verbindung, beispielsweise durch Kleben oder Schrauben.This configuration makes it possible that the terminal, for example, in case of damage or for cleaning, exchanged or removed. Alternatively, the clamp can also be fixedly connected to the bearing shoulder, in particular by a force and / or material connection, for example by gluing or screwing.

Der Schweissbalken befindet sich insbesondere dann in der Bereitschaftsstellung, wenn der Benutzer das Behältnis aus der Vakuumkammer entnehmen oder in die Vakuumkammer einsetzen kann oder während die Vakuumkammer ungenutzt ist. Sobald der Vakuumierprozess eingeleitet und der Vakuumkammerdruck durch Absaugen der Luft abgesenkt wird, gelangt der Schweissbalken ab einem bestimmten Druckwert in die Betriebsstellung.The welding bar is in the ready position, in particular, when the user can remove the container from the vacuum chamber or insert it into the vacuum chamber or while the vacuum chamber is unused. As soon as the vacuuming process is initiated and the vacuum chamber pressure is lowered by sucking off the air, the welding bar reaches the operating position at a certain pressure value.

Wenn in der Bereitschaftsstellung die Oberseite des Schweissbalkens tiefer angeordnet ist als die Oberseite der Lagerschulter(n), gelangt in der Bereitschaftsstellung das Behältnis nicht in direkten Kontakt mit dem Schweissbalken, weil das Behältnis auf der Oberseite der Lagerschulter(n) aufliegt.If, in the ready position, the upper side of the welding bar is arranged lower than the upper side of the bearing shoulder (s), the container does not come into direct contact with the welding bar in the ready position because the container rests on the upper side of the bearing shoulder (s).

Als "Oberseite" der Vakuumkammer ist diejenige Seite zur verstehen, welche der Vakuumkammerbodenfläche in der Vakuumkammer gegenüberliegt und in einer besonderen Ausführung durch einen Vakuumkammerdeckel gebildet wird. Die Oberseite des Schweissbalkens und die Oberseite der Lagerschulter sind diejenigen Seiten, welche beim betreffenden Bauteil am nächsten zur Oberseite der Vakuumkammer hingewandt sind und insbesondere mit der Oberseite der Vakuumkammer annähernd parallel angeordnet sind. Vorteilhaft entspricht die "Oberseite" der Vakuumkammer derjenigen Seite, die bei bestimmungsgemässer Montage des Geräts oben liegt.As the "top" of the vacuum chamber is that side to understand which faces the vacuum chamber bottom surface in the vacuum chamber and is formed in a particular embodiment by a vacuum chamber lid. The upper side of the welding bar and the upper side of the bearing shoulder are those sides which, in the relevant component, are closest to the upper side of the vacuum chamber and, in particular, are arranged approximately parallel with the upper side of the vacuum chamber. Advantageously, the "top" of the vacuum chamber corresponds to that side which is at the top when the device is installed as intended.

Vorzugsweise sind die erste und die zweite Lagerschulter an Endbereichen (d.h. an den kurzen Seiten) des Schweissbalkens miteinander verbunden und bilden einen Rahmen um den Schweissbalken, durch welchen sich der Schweissbalken beim Übergang zwischen der Bereitschafts- und der Betriebsstellung bewegt. So wird die Abstützung des Behältnisses verbessert.Preferably, the first and the second bearing shoulder at end portions (ie on the short sides) of the welding beam are connected together and form a frame around the welding beam, through which the Welding bar moved at the transition between the standby and the operating position. This improves the support of the container.

Das Vakuumiergerät kann Teil eines Haushaltsgeräts sein und in einer Schublade desselben angeordnet werden. Das Haushaltsgerät ist insbesondere für den Einbau in einem Küchenmöbel oder einer Küchenzeile geeignet.The Vakuumiergerät can be part of a household appliance and arranged in a drawer of the same. The household appliance is particularly suitable for installation in a kitchen furniture or a kitchenette.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Ausgestaltungen, Vorteile und Anwendungen der Erfindung ergeben sich aus den abhängigen Ansprüchen und aus der nun folgenden Beschreibung anhand der Figuren. Dabei zeigen:

  • Fig. 1 eine Aussenansicht des Vakuumiergeräts,
  • Fig. 2 die Schweissbalkenabdeckung des Geräts von Fig. 1,
  • Fig. 3 eine Draufsicht auf das Vakuumiergerät in der Schnittebene III-III von Fig. 6,
  • Fig. 4 die Schweissbalkenabdeckung von unten,
  • Fig. 5 das Vakuumiergerät mit eingesetzter Abstützvorrichtung in einer ersten Position,
  • Fig. 6 einen vertikalen Schnitt durch das Vakuumiergerät mit eingesetzter Abstützvorrichtung in der ersten Position,
  • Fig. 7 das Vakuumiergerät mit eingesetzter Abstützvorrichtung in einer zweiten Position,
  • Fig. 8 einen vertikalen Schnitt durch das Vakuumiergerät mit eingesetzter Abstützvorrichtung in der zweiten Position,
  • Fig. 9 die Abstützvorrichtung in ihrer ersten Position und
  • Fig. 10 die Abstützvorrichtung in ihrer zweiten Position.
Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to FIGS. Showing:
  • Fig. 1 an external view of the vacuuming device,
  • Fig. 2 the welding bar cover of the unit from Fig. 1 .
  • Fig. 3 a plan view of the Vakuumiergerät in the sectional plane III-III of Fig. 6 .
  • Fig. 4 the welding beam cover from below,
  • Fig. 5 the Vakuumiergerät with inserted support device in a first position,
  • Fig. 6 a vertical section through the Vakuumiergerät with inserted support device in the first position,
  • Fig. 7 the Vakuumiergerät with inserted support device in a second position,
  • Fig. 8 a vertical section through the Vakuumiergerät with inserted support device in the second position,
  • Fig. 9 the support device in its first position and
  • Fig. 10 the support device in its second position.

Wege zur Ausführung der ErfindungWays to carry out the invention

Fig. 1, 5 und 6 zeigen ein Vakuumiergerät 1 zum Verschweissen eines Behältnisses, insbesondere eines Beutels aus Kunststoff. Das Gerät besitzt mit eine Vakuumkammer 2 mit einer Vakuumkammerbodenfläche 3 und einem die Oberseite des Geräts definierenden Vakuumkammerdeckel 13. Mittels einer Vakuumpumpe 4 (in Fig. 1 lediglich schematisch dargestellt) wird während eines Vakuumiervorgangs bei geschlossenen Vakuumkammerdeckel 13 Luft durch eine Luftauslassöffnung 41 aus der Vakuumkammer 2 abgesaugt. Fig. 1 . 5 and 6 show a Vakuumiergerät 1 for welding a container, in particular a bag made of plastic. The apparatus has a vacuum chamber 2 with a vacuum chamber bottom surface 3 and a vacuum chamber lid 13 defining the top of the apparatus. By means of a vacuum pump 4 (in Fig. 1 only shown schematically) 13 air is sucked through an air outlet opening 41 from the vacuum chamber 2 during a Vakuumiervorgangs with closed vacuum chamber lid.

Die Vakuumkammer 2 bildet eine Mulde 42 zur Aufnahme des Nutzteils des zu verschweissenden Behältnisses, d.h. desjenigen Teils des Behältnisses, in welchem das durch das Behältnis zu verpackende Gut angeordnet ist. Die Mulde 42 besitzt vorzugsweise eine Tiefe von mindestens 5 cm, sowie eine Breite und Länge von jeweils mindestens 10 cm, vorzugsweise mehr. Die nutzbare Tiefe der Mulde 42 kann zur Anpassung an die Grösse des Behältnisses durch eine weiter unten beschriebene Abstützvorrichtung reduziert werden.The vacuum chamber 2 forms a trough 42 for receiving the useful part of the container to be welded, i. that part of the container in which the product to be packaged by the container is arranged. The trough 42 preferably has a depth of at least 5 cm, and a width and length of at least 10 cm, preferably more. The usable depth of the trough 42 may be reduced to accommodate the size of the container by a support device described below.

In der Vakuumkammer 2 ist an einem Seitenrand der Mulde 42 eine Schweissvorrichtung 5 angeordnet, welche dazu dient, eine Öffnung des in das Gerät eingelegten Behältnisses zu verschweissen.In the vacuum chamber 2, a welding device 5 is arranged on a side edge of the trough 42, which serves to weld an opening of the container inserted in the device.

Die Schweissvorrichtung 5 besitzt einen heizbaren Schweissbalken 6 und Stössel 8 (Fig. 6), wobei der Schweissbalken 6 sich auf die Stössel 8 abstützt. Die Stössel 8 sind beweglich gelagert. Mit einem Dreiwegventil wird die Druckdifferenz zwischen der Umgebung und der Vakuumkammer angelegt, so dass sie sich bei Unterdruck in der Vakuumkammer nach oben in z-Richtung (Fig. 1), d.h. in Schliessrichtung, bewegen.The welding device 5 has a heatable welding bar 6 and plunger 8 (FIG. Fig. 6 ), wherein the welding bar 6 is supported on the plunger 8. The plunger 8 are movably mounted. With a three-way valve, the pressure difference between the environment and the vacuum chamber is applied, so that they are at negative pressure in the vacuum chamber up in the z-direction ( Fig. 1 ), ie in the closing direction, move.

Ein Behältnis, welches in die Vakuumkammer 2 eingelegt wird, ist durch den Benutzer derart anzuordnen, dass die zu verschweissende Stelle des Behältnisses während des Vakuumiervorgangs zwischen dem Schweissbalken 6 und einem Gegenlager 12 eingeklemmt wird.A container, which is inserted into the vacuum chamber 2, is to be arranged by the user, that the point of the container to be welded is clamped between the welding bar 6 and an abutment 12 during the vacuuming process.

Das Gegenlager 12 ist in der vorliegenden Ausführung am Vakuumkammerdeckel 13 angeordnet. Es ist insbesondere als Schweisskissen ausgestaltet. Es ist, wie der Schweissbalken 6, länglich, mit einer Länge, welche normalerweise mindestens so gross wie oder grösser als die Länge des Schweissbalkens 6 ist.The anvil 12 is arranged on the vacuum chamber lid 13 in the present embodiment. It is designed in particular as a welding pad. It is, like the welding bar 6, elongate, with a length which is normally at least as large as or greater than the length of the welding bar 6.

Das Vakuumiergerät weist in seiner Vakuumkammer 2 eine Schweissbalkenabdeckung 7 auf. Diese bildet ein Lager für das zu verschweissende Behältnis im Bereich des Schweissbalkens 6, lässt aber den Schweissbalken 6 so nach oben frei, dass dieser während dem Schweissen das Behältnis kontaktieren kann.The Vakuumiergerät has in its vacuum chamber 2 on a welding beam cover 7. This forms a bearing for the container to be welded in the region of the welding bar 6, but leaves the welding bar 6 free upwards so that it can contact the container during welding.

Die Schweissbalkenabdeckung 7 bildet eine erste und eine zweite Lagerschulter 7a bzw. 7b. Die Lagerschultern 7a, 7b erstrecken sich entlang der gegenüber liegenden Längsseiten des Schweissbalkens 6 und verlaufen parallel zu diesem.The welding beam cover 7 forms a first and a second bearing shoulder 7a and 7b, respectively. The bearing shoulders 7a, 7b extend along the opposite longitudinal sides of the welding beam 6 and run parallel to this.

Die Lagerschultern 7a, 7b sind, in Schliessrichtung z (Fig. 1), in der oben erwähnten Bereitschaftsstellung näher am Gegenlager 12 angeordnet als der Schweissbalken 6. Vorteilhaft sind die Lagerschultern 7a, 7b, in Schliessrichtung z, in der Bereitschaftsstellung dem Gegenlager 12 mindestens 1 mm näher als der Schweissbalken 6.The bearing shoulders 7a, 7b are, in the closing direction z ( Fig. 1 ), in the above-mentioned readiness position closer to the abutment 12 arranged as the welding beam 6. Advantageously, the bearing shoulders 7a, 7b, in the closing direction z, in the standby position the abutment 12 at least 1 mm closer than the welding beam. 6

Die erste Lagerschulter 7a ist zwischen der Mulde 42 und dem Schweissbalken 6 angeordnet.The first bearing shoulder 7a is disposed between the trough 42 and the welding bar 6.

Die zweite Lagerschulter 7b befindet sich auf der der ersten Lagerschulter 7a und der Mulde 42 gegenüber liegenden Seite des Schweissbalkens 6.The second bearing shoulder 7b is located on the first bearing shoulder 7a and the trough 42 opposite side of the welding beam. 6

Die Länge jeder Lagerschulter 7a, 7b ist vorzugsweise gleich gross wie oder grösser als die Länge des Schweissbalkens 6.The length of each bearing shoulder 7a, 7b is preferably equal to or greater than the length of the welding beam 6.

Die Oberseite 17 der Schweissbalkenabdeckung 7 weist, senkrecht zur Längsrichtung des Schweissbalkens 6, eine grössere Breite 16 auf als der Schweissbalken 6.The upper side 17 of the welding beam cover 7, perpendicular to the longitudinal direction of the welding beam 6, has a greater width 16 than the welding beam 6.

Die Oberseite der ersten Lagerschulter 7a weist eine Abrundung 14 auf, welche zur Mulde 42 hin abfällt.The upper side of the first bearing shoulder 7a has a rounding 14, which drops towards the depression 42.

An dieser Abrundung 14 erfährt das Behältnis einen Knick, weil derjenige Teil des Behältnisses, welcher auf der ersten Lagerschulter 7a angeordnet ist, höher liegt, als der Nutzteil des Behältnisses, welcher im Bereich der Mulde 42 auf dem Vakuumkammerboden 3 oder auf einer Abstützvorrichtung 18 - 22, welche weiter unten beschrieben wird, abgestützt ist.At this rounding 14, the container undergoes a kink, because that part of the container, which is arranged on the first bearing shoulder 7a, is higher than the useful part of the container, which in the region of the trough 42 on the vacuum chamber bottom 3 or on a supporting device 18. 22, which will be described below, is supported.

Dank dieser Ausgestaltung befindet sich der Knick des Behältnisses um einen Abstand 15 weiter entfernt vom Schweissbalken 6, als wenn die erste Schweissbalkenabdeckung fehlen und das Behältnis unmittelbar auf dem Schweissbalken 6 aufliegen würde.Thanks to this configuration, the kink of the container is located farther away from the welding bar 6 by a distance 15 than if the first welding bar cover were missing and the container would rest directly on the welding bar 6.

Dieser Knick bildet einen Strömungswiderstand für den Inhalt des Behältnisses, beispielsweise für fliessfähige Lebensmittel, welche innerhalb des Beutels angeordnet sind. Dadurch wird die Gefahr reduziert, dass bei Vibrationen, welche durch den Betrieb des Vakuumiergeräts 1 erzeugt werden, oder aufgrund von Druckunterschieden beim Vakuumieren, Substanzen aus dem Innern des Behältnisses bis zum Schweissbalken oder sogar darüber hinaus gelangen.This kink forms a flow resistance for the contents of the container, for example, for flowable food, which are arranged inside the bag. This reduces the risk that, in vibrations generated by the operation of the Vakuumiergeräts 1, or due to pressure differences in vacuuming, substances from the interior of the container to the welding beam or even beyond reach.

Wie aus Fig. 2 ersichtlich, sind der erste und der zweite Schweissbalken 7a, 7b an den Endbereichen des Schweissbalkens 6 über Stege 7c, 7d miteinander verbunden. So bilden die Schweissbalken 7a, 7b mit ihren Stegen 7c, 7d einen Rahmen, durch welchen der Schweissbalken 6 beim Übergang von der Bereitschaftsstellung in die Betriebsstellung hindurchtreten kann.How out Fig. 2 can be seen, the first and the second welding beam 7a, 7b at the end portions of the welding beam 6 via webs 7c, 7d interconnected. Thus, the welding bars 7a, 7b with their webs 7c, 7d form a frame through which the welding bar 6 can pass during the transition from the standby position into the operating position.

Das Vakuumiergerät 1 befindet sich in der Bereitschaftsstellung, wenn keine Vakuumierung stattfindet, oder wenn der Vakuumkammerdeckel 13 geöffnet und das Behältnis in die Vakuumkammer 2 eingelegt oder dieser entnommen wird.The Vakuumiergerät 1 is in the standby position when no vacuuming takes place, or when the vacuum chamber lid 13 is opened and the container placed in the vacuum chamber 2 or this is removed.

In der Bereitschaftsstellung befindet sich die Oberseite des Schweissbalkens 6 unterhalb der Oberseite 17 der Schweissbalkenabdeckung 7, insbesondere unterhalb der Oberflächen der beiden Lagerschultern 7a, 7b. In dieser Stellung berührt der Schweissbalken das in der Vakuumkammer 2 eingelegte Behältnis in der Regel nicht, weil dieses auf der Oberseite 17 der Lagerschultern 7a, 7b ruht. Nach dem Starten des Vakuumiervorgangs bewegt sich der Schweissbalken 6 aufgrund des erzeugten Unterdrucks nach oben durch die Schweissbalkenabdeckung 7 in die Betriebsstellung und klemmt das Behältnis gegen das Gegenlager 12.In the ready position, the upper side of the welding bar 6 is located below the upper side 17 of the welding bar cover 7, in particular below the surfaces of the two bearing shoulders 7a, 7b. In this position, the welding bar touches the inserted in the vacuum chamber 2 container usually not because it rests on the top 17 of the bearing shoulders 7a, 7b. After starting the Vakuumiervorgangs the welding beam moves 6 due to the generated negative pressure upward through the welding beam cover 7 in the operating position and clamps the container against the anvil 12th

An der Schweissbalkenabdeckung 7, vorzugsweise an der zweiten Lagerschulter 7b, ist eine Klemme 10 angeordnet. Die Klemme 10 ist auf der der Mulde 42 und der ersten Lagerschulter 7a gegenüber liegenden Seite des Schweissbalkens 6 angeordnet. Der Schweissbalken 6 befindet sich damit zwischen der Klemme 10 und ersten Lagerschulter 7a, sowie zwischen der Klemme 10 und der Mulde 42.On the welding beam cover 7, preferably on the second bearing shoulder 7b, a clamp 10 is arranged. The clamp 10 is arranged on the side of the welding bar 6 opposite the trough 42 and the first bearing shoulder 7a. The welding bar 6 is thus between the clamp 10 and the first bearing shoulder 7 a, as well as between the clamp 10 and the trough 42.

Die Klemme 10 dient dazu, das Behältnis an derjenigen Seite des Behältnisses, an welcher die Öffnung des Behältnisses angeordnet ist und die Luft während des Vakuumiervorgangs aus dem Behältnis austritt, festzuhalten. Dadurch lässt sich das Behältnis durch den Benutzer einfacher positionieren, und die Gefahr, dass sich das Behältnis während des Vakuumiervorgangs innerhalb der Vakuumkammer 2 verschiebt, beispielsweise aufgrund von Vibrationen des Vakuumiergeräts 1, wird reduziert.The clamp 10 serves to hold the container on that side of the container at which the opening of the container is arranged and the air exits the container during the vacuuming process to hold. As a result, the container can be easily positioned by the user, and the risk that the container shifts during the Vakuumiervorgangs within the vacuum chamber 2, for example due to vibrations of the Vakuumiergeräts 1, is reduced.

Bei der Klemme 10 handelt es sich insbesondere um ein gebogenes Blech, beispielsweise aus Chromstahl, Federstahl, Aluminium und/oder Kunststoff. Die Klemme 10 kann fix mit der Schweissbalkenabdeckung 7 verbunden sein, beispielsweise kraftschlüssig durch Schrauben, wie in Fig. 4 dargestellt.The clamp 10 is in particular a bent sheet metal, for example made of chrome steel, spring steel, aluminum and / or plastic. The clamp 10 may be fixedly connected to the welding beam cover 7, for example by force locking by screws, as in Fig. 4 shown.

In einer anderen Ausführung kann die Klemme 10 auch durch eine an der Schweissbalkenabdeckung 5 angeordnete Halterung gehalten werden, derart, dass die Klemme 10 ohne Zuhilfenahme von Werkzeugen durch eine Bewegung aus der Halterung reversibel entnommen und wieder in diese eingesetzt werden kann. Dadurch lässt sich die Klemme 10 als Einzelteil einfach auswechseln.In another embodiment, the clamp 10 may also be held by a support arranged on the welding beam cover 5, such that the clamp 10 can be reversibly removed from the mounting by means of a movement without the aid of tools and be reinserted therein. As a result, the terminal 10 can be easily replaced as a single part.

Durch die Federwirkung der Klemme 10 wird das Behältnis an die Schweissbalkenabdeckung 7 gedrückt.Due to the spring action of the clamp 10, the container is pressed against the welding bar cover 7.

Fig. 2 und 6 zeigen die Schweissbalkenabdeckung 7. Die Schweissbalkenabdeckung besitzt eine Stützvorrichtung 9, mit welcher sie auf einem Absatz 3a der Vakuumkammerbodenfläche 3 abgestützt wird (vgl. Fig. 6). Fig. 2 and 6 show the welding beam cover 7. The welding beam cover has a support device 9, with which it is supported on a shoulder 3a of the vacuum chamber bottom surface 3 (see. Fig. 6 ).

Die Abstützung auf der Vakuumkammerbodenfläche 3 führt dazu, dass nur wenige Vibrationen und Bewegungen des Vakuumiergeräts 1, insbesondere des sich bewegenden Schweissbalkens 6, auf die Schweissbalkenabdeckung 7 übertragen werden.The support on the vacuum chamber bottom surface 3 causes only a few vibrations and movements of the Vakuumiergeräts 1, in particular of the moving welding bar 6, are transmitted to the welding beam cover 7.

Die Stützvorrichtung 9 ist derart angeordnet, dass sie die Stössel 8 umgibt, so dass die Stützvorrichtung 9 durch die Stössel 8 seitlich (d.h. in den Richtungen x und y gemäss Fig. 1) gehalten wird. Diese Anordnung ist ebenfalls in den Figuren 3 und 4 ersichtlich.The support device 9 is arranged such that it surrounds the plunger 8, so that the support device 9 by the plunger 8 laterally (ie in the directions x and y according to Fig. 1 ) is held. This arrangement is also in the FIGS. 3 and 4 seen.

Bei der Montage wird zuerst die Schweissbalkenabdeckung 7 eingesetzt und anschliessend wird der Schweissbalken 6 durch den Zwischenraum 11 von oben montiert. Zur Entnahme der Schweissbalkenabdeckung 7 können zuerst der Schweissbalken 6 und anschliessend die Schweissbalkenabdeckung 7 aus dem Vakuumiergerät 1 entnommen werden. Alternativ kann die Schweissbalkenabdeckung 7 zusammen mit dem Schweissbalken 6 entnommen werden, da mit Anheben der Schweissbalkenabdeckung auch der Schweissbalken 6 von den Stösseln 8 getrennt werden kann.During assembly, the welding beam cover 7 is first inserted and then the welding beam 6 is mounted through the gap 11 from above. To remove the welding beam cover 7, first the welding bar 6 and then the welding beam cover 7 can be removed from the vacuuming device 1. Alternatively, the welding beam cover 7 can be removed together with the welding beam 6, since with raising the welding beam cover and the welding beam 6 can be separated from the rams 8.

Fig. 3 zeigt das Vakuumiergerät 1 von oben in einem Schnitt entlang Linie III-III von Fig. 6. Auf der Vakuumkammerbodenfläche 3 sind z.B. zwei Stössel 8 angeordnet, auf welchen sich der Schweissbalken 6 abstützt und die den Schweissbalken mit Strom versorgen. Die Stössel 8 werden, wie bereits erwähnt, von der Stützvorrichtung 9 umgeben und halten diese seitlich, d.h. gegen Bewegungen in horizontaler Richtung x, y. Fig. 3 shows the Vakuumiergerät 1 from above in a section along line III-III of Fig. 6 , On the vacuum chamber bottom surface 3, for example, two plungers 8 are arranged, on which the welding bar 6 is supported and that supply the welding bar with electricity. The plungers 8 are, as already mentioned, surrounded by the support device 9 and hold them laterally, ie against movements in the horizontal direction x, y.

Fig. 4 zeigt die Schweissbalkenabdeckung 7 mit der Klemme 10 von unten, wobei die Stössel 8 ebenfalls sichtbar sind. In dieser Ausführung ist die Klemme 10 mit zwei Schrauben 19 an der Schweissbalkenabdeckung 7 montiert. Fig. 4 shows the welding bar cover 7 with the clamp 10 from below, wherein the plunger 8 are also visible. In this embodiment, the clamp 10 is mounted to the weld bar cover 7 with two screws 19.

Wie in Fig. 5 ersichtlich, weist das Vakuumiergerät 1 eine Abstützvorrichtung 18 - 22 auf zur Abstützung des zu vakuumierenden Behältnisses im Bereich der Mulde 42.As in Fig. 5 As can be seen, the vacuum apparatus 1 has a supporting device 18-22 for supporting the container to be vacuumed in the region of the trough 42.

Die Abstützvorrichtung 18 - 22 ist aus der Vakuumkammer entnehmbar. Sie ist ohne Befestigung in die Vakuumkammer 2 eingelegt und kann somit in einfacher Weise der Vakuumkammer 2 entnommen werden.The support device 18 - 22 can be removed from the vacuum chamber. It is inserted without attachment in the vacuum chamber 2 and can thus be removed from the vacuum chamber 2 in a simple manner.

Die Abstützvorrichtung 18 - 22 kann in mindestens zwei verschiedenen Positionen, nämlich mindestens in einer ersten und in einer zweiten Position, in die Vakuumkammer 2 eingesetzt werden. Fig. 5 und 6 zeigen die Abstützvorrichtung 18 - 22 in ihrer ersten Position, und Fig. 7 und 8 zeigen die Abstützvorrichtung 18 - 22 in ihrer zweiten Position.The support device 18 - 22 can be used in at least two different positions, namely at least in a first and in a second position, in the vacuum chamber 2. FIGS. 5 and 6 show the support device 18-22 in their first position, and FIGS. 7 and 8 show the support device 18 - 22 in its second position.

Die Abstützvorrichtung 18 - 22 kann so in die Vakuumkammer 2 eingesetzt werden, dass sie in der Mulde 42 einen Stützbereich 183 für das Behältnis bildet, d.h. einen Bereich, welcher dazu geeignet ist, den Nutzteil des Behältnisses während dem Verschweissen zu stützen. In der ersten Position der Abstützvorrichtung 18 - 22 ist der Stützbereich 183 höher angeordnet als in der zweiten Position. So kann die Lagertiefe des Behältnisses in der Mulde 42 der Grösse des Behältnisses angepasst werden.The support device 18-22 may be inserted into the vacuum chamber 2 so as to form in the well 42 a support portion 183 for the container, i. an area which is suitable for supporting the useful part of the container during welding. In the first position of the support device 18-22, the support area 183 is arranged higher than in the second position. Thus, the storage depth of the container in the trough 42 of the size of the container can be adjusted.

Die Abstützvorrichtung 18 - 22 weist in der dargestellten Ausführung eine Abstützplatte 18 mit einer ersten Seite 181 und mit einer zweiten Seite 182 auf. Die Abstützplatte bildet den Stützbereich 183 zur Aufnahme des Behältnisses im Bereich der Mulde 42.In the illustrated embodiment, the support device 18-22 has a support plate 18 with a first side 181 and with a second side 182. The Support plate forms the support portion 183 for receiving the container in the region of the trough 42nd

In der ersten Position der Abstützvorrichtung 18 - 22 gemäss Fig. 5 und 6 ist der Stützbereich 183 von der Vakuumkammerbodenfläche 3 über die Distanz 23a beabstandet (siehe Fig. 6), insbesondere gemessen am tiefsten Punkt der Vakuumkammerbodenfläche 3. Das zu vakuumierende Behältnis befindet sich dabei auf der ersten Seite 181 der Abstützplatte 18 und liegt auf dieser im Stützbereich 183 auf. Die Distanz 23a beträgt vorteilhaft mindestens 20 mm, insbesondere mindestens 40 mm.In the first position of the support device 18 - 22 according to FIGS. 5 and 6 For example, the support portion 183 is spaced from the vacuum chamber bottom surface 3 by the distance 23a (see FIG Fig. 6 ), in particular measured at the lowest point of the vacuum chamber bottom surface 3. The container to be vacuumed is located on the first side 181 of the support plate 18 and rests on this in the support region 183. The distance 23a is advantageously at least 20 mm, in particular at least 40 mm.

Die erste Seite 181 der Abstützplatte 18 ist in der ersten Position nach oben in Richtung Vakuumkammerdeckel 13 gerichtet.The first side 181 of the support plate 18 is directed in the first position upwards in the direction of the vacuum chamber cover 13.

Die erste Position der Abstützplatte 18 wird für kleinere Behältnisse verwendet, sodass die kleineren Behältnisse näher am Schweissbalken 6 zu liegen kommen, als wenn sie direkt auf der Vakuumkammerbodenfläche 3 angeordnet wären. Dadurch, dass das Behältnis weniger weit vom Schweissbalken 6 entfernt ist, wird die Prozesszuverlässigkeit erhöht.The first position of the support plate 18 is used for smaller containers, so that the smaller containers come to lie closer to the welding bar 6, as if they were located directly on the vacuum chamber bottom surface 3. The fact that the container is located less far from the welding bar 6, the process reliability is increased.

Die Abstützvorrichtung 18 - 22 umfasst zusätzlich zur Abstützplatte 18 in der vorliegenden Ausführung mindestens eine, vorzugsweise zwei Greiföffnungen 19, eine Mehrzahl von Luftdurchlassöffnungen 20, eine Rahmenverstärkung 21 und eine Querplatte 22.The support device 18-22 comprises in addition to the support plate 18 in the present embodiment at least one, preferably two gripping openings 19, a plurality of air passage openings 20, a frame reinforcement 21 and a transverse plate 22.

Ein Benutzer kann mit seinen Fingern in die Greiföffnungen 19 greifen, um die Abstützvorrichtung 18 - 22 von der ersten Position in die zweite Position zu wechseln, oder umgekehrt. Der Benutzer kann die Abstützvorrichtung 18 - 22 auch vollständig aus der Vakuumkammer 2 entnehmen und wieder in diese einsetzen.A user can reach with his fingers into the gripping openings 19 to change the support device 18-22 from the first position to the second position, or vice versa. The user can also remove the support device 18-22 completely from the vacuum chamber 2 and insert it back into it.

Fig. 7 und 8 zeigen die Abstützvorrichtung 18 - 22 in der zweiten Position, wobei in der zweiten Position die Abstützplatte 18 mit ihrem Stützbereich 183 weniger weit von der Vakuumkammerbodenfläche 3 beabstandet ist als in der ersten Position. FIGS. 7 and 8 show the supporting device 18 - 22 in the second position, wherein in the second position, the support plate 18 is spaced with its support portion 183 less far from the vacuum chamber bottom surface 3 as in the first position.

Die Abstützvorrichtung 18 - 22 stützt sich in der zweiten Position über Randverstärkungen 21 oder andere Abstandhalter auf der Vakuumkammerbodenfläche 3 derart ab, dass ein Abstand entsprechend einer Distanz 23b (Fig. 8) zwischen der Vakuumkammerbodenfläche 3 und der Abstützplatte 18 verbleibt. Die Distanz 23b in der zweiten Position der Abstützvorrichtung 18 - 22 ist wesentlich kleiner, insbesondere mindestens zehnmal kleiner, als die Distanz 23a in der ersten Position gemäss Fig. 6.The support device 18 - 22 is supported in the second position via edge reinforcements 21 or other spacers on the vacuum chamber bottom surface 3 in such a way that a distance corresponding to a distance 23 b (FIG. Fig. 8 ) remains between the vacuum chamber bottom surface 3 and the support plate 18. The distance 23b in the second position of the support device 18-22 is substantially smaller, in particular at least ten times smaller, than the distance 23a in the first position according to FIG Fig. 6 ,

Da aber die Distanz 23b nicht null ist, insbesondere mindestens 1 mm beträgt, kann der Benutzer auch in der zweiten Position in die Greiföffnungen 19 hineingreifen und die Abstützvorrichtung 18 - 22 problemlos mit seinen Fingern oder Nägeln aus der Vakuumkammer 2 entnehmen.However, since the distance 23b is not zero, in particular at least 1 mm, the user can reach into the gripping openings 19 even in the second position and remove the support device 18-22 with his fingers or nails from the vacuum chamber 2 without problems.

Andererseits sollte die Distanz 23b auch nicht zu gross sein, damit nicht unnötig Platz in der Mulde 42 verschwendet wird. Vorzugsweise beträgt die Distanz 23b deshalb höchstens 10 mm.On the other hand, the distance 23b should also not be too large, so that unnecessary space in the trough 42 is wasted. Therefore, the distance 23b is preferably at most 10 mm.

Sowohl in der ersten als auch in der zweiten Position der Abstützvorrichtung 18 - 22 ist der Schweissbalken 6, zumindest in seiner Betriebsstellung, höher angeordnet als der Stützbereich 183, wodurch das Risiko reduziert wird, dass das Füllgut des Behältnisses zur Schweissnaht oder darüber hinaus gelangt.Both in the first and in the second position of the support device 18-22, the welding bar 6, at least in its operating position, is arranged higher than the support area 183, which reduces the risk that the contents of the container will reach the weld seam or beyond.

Die Luftdurchlassöffnungen 20 erlauben es, beim Vakuumiervorgang die Luft zwischen Abstützvorrichtung 18 - 22 und der Vakuumkammerbodenfläche 3 mit geringem Widerstand aus der Vakuumkammer 2 zu evakuieren.The air passage openings 20 make it possible during the vacuuming process to evacuate the air between the support device 18 - 22 and the vacuum chamber bottom surface 3 with little resistance from the vacuum chamber 2.

Die Randverstärkungen 21 sind am Rand der Abstützvorrichtung 18 - 22 angeordnet. Sie können am Rand beispielsweise durchgehend, abschnittsweise oder nur an den Eckbereichen angeordnet sein.The edge reinforcements 21 are arranged on the edge of the supporting device 18-22. They can be arranged at the edge, for example, continuously, in sections or only at the corner.

Die Randverstärkungen 21 bestehen zumindest teilweise aus Kunststoff, um die Rutschfestigkeit die Abstützvorrichtung 18 - 22 auf dem Vakuumkammerboden 3 zu verbessern und ein Zerkratzen des Vakuumkammerbodens 3 zu verhindern.The edge reinforcements 21 consist at least partially of plastic, to the slip resistance of the support device 18 - 22 on the vacuum chamber bottom 3 to improve and prevent scratching of the vacuum chamber bottom 3.

In einer anderen Ausführungsform kann auf die Randverstärkungen 21 verzichtet werden, und die Abstützvorrichtung 18 - 22 wird nahe an ihren Rändern zum Bilden von einem oder mehreren Abstandshaltern umgebogen, sodass ein Benutzer in der zweiten Position mit den Fingern trotzdem in die Greiföffnungen 19 hineingreifen kann.In another embodiment, the edge reinforcements 21 may be dispensed with, and the support 18 - 22 is bent near its edges to form one or more spacers, so that a user in the second position can still reach into the gripping apertures 19 with their fingers.

Die Querplatte 22 steht quer zur Abstützplatte 18, insbesondere unter einem Winkel zwischen 20 und 70° zur Abstützplatte 18.The transverse plate 22 is transverse to the support plate 18, in particular at an angle between 20 and 70 ° to the support plate 18th

In der zweiten Position (Fig. 7, 8) verläuft die Abstützvorrichtung 18 - 22 vorzugsweise mit einer Genauigkeit von +/- 10°, insbesondere innerhalb +/-5°, parallel zum jeweils benachbarten Bereich des Vakuumkammerbodens 3. Alternativ oder zusätzlich hierzu liegt der Abstand der Abstützvorrichtung 18 - 22 vom Vakuumkammerboden 3 überall unter 1 cm. Durch eine oder beide diese Massnahmen nimmt die Abstützplatte in der zweiten Position nur wenig Raum ein.In the second position ( Fig. 7, 8 ), the support device 18-22 preferably extends with an accuracy of +/- 10 °, in particular within +/- 5 °, parallel to the respectively adjacent region of the vacuum chamber bottom 3. Alternatively or additionally, the distance of the support device 18-22 from the vacuum chamber bottom 3 everywhere below 1 cm. By one or both of these measures, the support plate in the second position occupies little space.

In der ersten Position (Fig. 5, 6) stützt sich die Abstützvorrichtung 18 - 22, insbesondere die Querplatte 22, an einem Ende in einem Abstützbereich 43 auf dem Vakuumkammerboden 3 der Mulde 42 ab. Am anderen Ende ist die Abstützvorrichtung 18 - 22, insbesondere die Abstützplatte 18, an einem Randbereich 44 der Mulde 42 abgestützt, welcher höher liegt als der Abstützbereich 43.In the first position ( Fig. 5, 6 ) supports the support device 18 - 22, in particular the transverse plate 22, at one end in a support region 43 on the vacuum chamber bottom 3 of the trough 42 from. At the other end, the support device 18-22, in particular the support plate 18, is supported on an edge region 44 of the trough 42, which is higher than the support region 43.

Der Randbereich 44 ist nach oben von der Schweissbalkenabdeckung 7 der Schweissvorrichtung 5 abgedeckt, so dass das die dort liegende Kante der Abstützvorrichtung 18 - 22 kaum sichtbar und geschützt ist.The edge region 44 is covered at the top by the welding beam cover 7 of the welding device 5, so that the edge of the supporting device 18-22 lying there is barely visible and protected.

Die Abstützplatte 19 verläuft in der ersten und der zweiten Position, vorzugsweise mit einer Genauigkeit von +/- 10°, insbesondere innerhalb +/-5°, horizontal und bildet in der gezeigten Ausführung eine ebene Auflage für das zu vakuumierende Behältnis.The support plate 19 extends in the first and the second position, preferably with an accuracy of +/- 10 °, in particular within +/- 5 °, horizontal and forms in the embodiment shown a flat support for the container to be vacuumed.

Fig. 9 zeigt die Abstützvorrichtung 18 - 22 in ihrer ersten Position und die Fig. 10 zeigt die Abstützvorrichtung 18 - 22 in ihrer zweiten Position von oben. Fig. 9 shows the support device 18 - 22 in its first position and the Fig. 10 shows the support device 18 - 22 in its second position from above.

Die Abstützplatte 18 und die Querplatte 22 bestehen zumindest teilweise aus einem Metall, insbesondere Chromstahl oder Aluminium, oder aus einem Kunststoff, insbesondere Polypropylen.The support plate 18 and the transverse plate 22 consist at least partially of a metal, in particular chromium steel or aluminum, or of a plastic, in particular polypropylene.

Vorzugsweise werden die Abstützplatte 18 und die Querplatte 22 von einem abgewinkelten Blech gebildet, insbesondere von zwei im Wesentlichen flachen Abschnitten eines im Bereich des Übergangs der beiden Platten abgewinkelten Blechs.Preferably, the support plate 18 and the transverse plate 22 are formed by an angled sheet, in particular of two substantially flat portions of an angled in the region of the transition of the two plates sheet.

Während in der vorliegenden Anmeldung bevorzugte Ausführungen der Erfindung beschrieben sind, ist klar darauf hinzuweisen, dass die Erfindung nicht auf diese beschränkt ist und in auch anderer Weise innerhalb des Umfangs der folgenden Ansprüche ausgeführt werden kann.While preferred embodiments of the invention are described in the present application, it is to be understood that the invention is not limited thereto and may be embodied otherwise within the scope of the following claims.

Claims (12)

  1. Vacuum device (1) for welding a receptacle inserted in the vacuum chamber, in particular a bag, with
    a vacuum chamber (2) having a vacuum chamber bottom surface (3),
    a vacuum pump (4) for evacuating the vacuum chamber,
    a welding device (5) arranged in the vacuum chamber (2) with a heatable welding bar (6) and a counter bearing (12), wherein the welding bar (6) and the counter bearing (12) are movable relative to one another along a closing direction (z) between a standby position and an operating position, wherein they are spaced apart from one another in the standby position, while in the operating position they are pressed against one another for clamping and welding the receptacle,
    wherein the vacuum device (1) comprises at least one first bearing shoulder (7a) for supporting the receptacle which extends along a longitudinal side of the welding bar (6),
    characterized in that in the standby position the at least one first bearing shoulder (7a) is arranged at least partially closer to the counter bearing (12) in the closing direction (z) than the welding bar (6).
  2. Vacuum device (1) according to one of the preceding claims, wherein the vacuum chamber (2) forms a hollow (42) for receiving a useful part of the receptacle, wherein the welding device (5) is arranged at an edge of the hollow (42), and wherein the first bearing shoulder (7a) is arranged between the welding bar (6) and the hollow (42).
  3. Vacuum device (1) according to one of the preceding claims, wherein the welding bar (6) is arranged below the counter bearing (12) and moves upwards against the counter bearing (12) during the transition from the standby to the operating position, while the at least one first bearing shoulder (7a) is stationary,
    and in particular wherein in the standby position an upper side of the welding bar (6) is arranged lower than an upper side of the at least one first bearing shoulder (7a).
  4. Vacuum device (1) according to the claims 2 and 3, wherein a lowest region of the hollow (42) is arranged lower than an upper side of the at least one first bearing shoulder (7a).
  5. Vacuum device (1) according to one of the preceding claims with at least a second bearing shoulder (7b) which is arranged on a side opposite the at least one first bearing shoulder (7a) along a longitudinal side of the welding bar (6).
  6. Vacuum device (1) according to claim 5, wherein the first and the second bearing shoulders (7a, 7b) are connected to each other at end portions of the welding bar (6) and form a frame around the welding bar (6) through which the welding bar (6) moves at the transition between the standby position and the operating position.
  7. Vacuum device (1) according to one of the preceding claims,
    wherein the vacuum device (1) has at least one tappet (8), on which the welding bar (6) is supported, and
    wherein the bearing shoulder (7a) or bearing shoulders are held by a supporting device (9), wherein the supporting device (9) is supported, in particular loosely, on a bottom region of the vacuum chamber (2) and ist positioned laterally by the tappet (8).
  8. Vacuum device (1) according to the claims 5 and 7, wherein the supporting device carries both the first and the second bearing shoulders (7a, 7b),
    and, in particular, wherein the welding bar (6) is removable from the tappet (8) and the bearing shoulders (7a, 7b) and the supporting device (9) are removable from the vacuum device after removal of the welding bar (6).
  9. Vacuum device (1) according to one of the preceding claims, wherein the vacuum device (1) has a clamp (10) for fixing the receptacle inserted in the vacuum chamber, and in particular wherein the welding bar (6) is arranged between the first shoulder (7a) and the clamp (10).
  10. Vacuum device (1) according to claims 5 and 9, wherein the clamp (10) is arranged at the second bearing shoulder (7b).
  11. Vacuum device (1) according to claim 10, wherein the clamp (10) is detachably connected to the second bearing shoulder (7b),
    and in particular wherein the second bearing shoulder (7b) has a holder for receiving the clamp (10) and the clamp (10) can be reversibly inserted into the holder and removed from the holder.
  12. Vacuum device (1) according to one of the preceding claims, wherein in the ready position the receptacle is spatially separated from the welding bar (6) by the bearing shoulder(s) (7a, 7b).
EP16174507.0A 2015-07-10 2016-06-15 Vacuum device with welded beam cover Active EP3115304B1 (en)

Priority Applications (1)

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SI201630475T SI3115304T1 (en) 2015-07-10 2016-06-15 Vacuum device with welded beam cover

Applications Claiming Priority (1)

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CH01009/15A CH709373A2 (en) 2015-07-10 2015-07-10 Vacuum Sealer with welding bar cover.

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EP3115304A1 EP3115304A1 (en) 2017-01-11
EP3115304B1 true EP3115304B1 (en) 2019-08-07

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Cited By (1)

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CH709373A2 (en) 2015-08-28
EP3115304A1 (en) 2017-01-11

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