• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for operating a chamber machine (1), in particular a chamber belt machine comprising a vacuum chamber (16), a lid, a sealing device with a sealing rail (3) and a sealing pressure membrane (9), a counterpressure bar, a controller (11) and a sensor (10), the method comprising the steps of: placing a bag (17) with a product (18) in the vacuum chamber (16); Closing the lid; Evacuating the vacuum chamber (16) and the sealing pressure membrane (9) and testing by means of the sensor (10), whether the sealing rail (3) is in a predetermined evacuation position; and pressurizing the sealing pressure membrane (9) after evacuation to establish a sealing pressure between the sealing bar (3) and the counterpressure bar to airtightly close the product (18) in the bag (17).
    公开号:CH706890B1
    申请号:CH01519/13
    申请日:2013-09-04
    公开日:2017-07-31
    发明作者:Steidele Jürgen
    申请人:Multivac Sepp Haggenmüller Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Description: [0001] The invention relates to a method for operating a chamber machine, in particular a chamber belt machine, having the features of claim 1.
    From the practice, chamber tape machines of the applicant are known in which a sealing device comprises a sealing rail and a sealing pressure membrane. To seal a bag, the sealing pressure membrane is pressurized to urge the sealing bar against a counter pressure bar to airtightly weld the bag neck clamped between the sealing bar and the counter pressure bar. During evacuation of a bag, the sealing bar is moved to an evacuation position where the gap between the sealing bar and a counter pressure bar is maximum. This is made possible by evacuating the sealing pressure membrane and a device that presses the sealing rail against the sealing pressure membrane with springs. The sealing pressure membrane is connected to a vacuum pump, which is also connected to the vacuum chamber for evacuating the bag, via a supply line, which is also partially provided outside the vacuum chamber. If the supply line is leaking in a region between the vacuum chamber and the vacuum pump, this leakage can cause the sealing bar does not reach its evacuation and the gap between the sealing bar and the counter-pressure bar and thus the opening of the bag neck is reduced so that the evacuation or the minimization of the oxygen content is not sufficient to comply with the stated minimum shelf life, especially in packaging food such as meat, so that there may be withdrawals and complaints. Likewise, a leakage of the sealing diaphragm or in the supply line can lead to the proposed sealing pressure is not achieved and thus decreases the quality of the sealed seam, without this being easily visible to the operator in a visual inspection.
    The object of the present invention is to increase the process reliability of a chamber machine, in particular chamber belt machine.
    This object is achieved by a method for operating a chamber machine, in particular chamber belt machine, with the features of claim 1. Advantageous developments of the invention are specified in the dependent claims.
    A method according to the invention for operating a combing machine, in particular a chamber belt machine comprising a vacuum chamber, a cover, a sealing device with a sealing rail and a sealing pressure membrane, a counterpressure strip, a control and a sensor, comprises the following steps: inserting a bag with a product in the vacuum chamber, - closing the lid, - evacuating the vacuum chamber and the sealing pressure membrane and checking by means of the sensor, whether the sealing rail is in its predetermined evacuation position, - pressurizing the sealing pressure membrane after evacuation with compressed air, a sealing pressure between the sealing rail and a counterpressure bar to airtightly close the product in the bag.
    This method has the advantage that any defects or leaks of the sealing pressure membrane, the supply lines inside and outside the vacuum chamber or a compressed air source are detected by the controller and this can be communicated to the operator by error message via a display. It is also possible to determine broken springs that press the sealing bar against the sealing pressure membrane or that block the sealing bar.
    Preferably, the sealing pressure is checked by means of a pressure measuring unit in a supply line of the sealing pressure membrane. The pressure measuring unit may be connected to the controller to automatically perform this test.
    In an advantageous embodiment, the controller communicates information by means of a display to an operator when the verification of the position of the sealing rail by means of the sensor during the evacuation of the sealing pressure membrane or the examination of the sealing pressure during the victory is negative, i. gives a value outside a given range. In this way it is possible to prevent a seal which is barely recognizable by the operator from leaving the production line and, if the product is a foodstuff such as meat, the minimum shelf life is not guaranteed and complaints are the result.
    In the following, an advantageous embodiment of the invention will be explained in more detail with reference to drawings. In detail show:
    1 is a schematic view of an inventive chamber machine,
    2 is a side view in section in the open position,
    Fig. 3 is a side view in section during evacuation and
    Fig. 4 is a side view in section during the victory.
    权利要求:
    Claims (3)
    [1]
    The same components are consistently provided in the figures with the same reference numerals. Fig. 1 shows an inventive chamber machine 1 with a cover 2, which comprises a sealing bar 3, and a housing 4, which comprises a counter-pressure strip 5 and a display 6. In a side section of the chamber machine 1, Fig. 2 shows the structure of the sealing bar 3 in the lid 2. The sealing bar 3 comprises a male connector 7 for separating a bag neck 19 (see Fig. 4) of a bag 17. By means not shown springs the sealing rail 3 is connected to a receptacle 8 in order to be held on the cover 2. A sealing pressure membrane 9 is provided between the sealing bar 3 and receptacle 8, which can move the sealing bar 3 relative to the lid 2. A sensor 10, in particular a position sensor, for example a non-contact, inductive or capacitive proximity switch or a light barrier, checks the reaching of an evacuation position (see FIG. 3) by the sealing bar 3. The sensor 10 is connected to a controller 11. The sealing pressure membrane 9 is connected via a supply line 12 to a vacuum pump 13 and optionally to a compressed air source 14 and by means of a 2-way valve 15 between the vacuum pump 13 and the compressed air source 14 switchable. Both via the springs, as well as via the vacuum pump 13, the sealing bar 3 is held in the evacuation position, which is checked by the sensor 10. Fig. 3 shows the chamber machine 1 in evacuation mode. In this case, the vacuum chamber 16, in which the bag 17 is located with a product 18, is evacuated by means of the vacuum pump 13 in order to reduce the oxygen content as far as possible in the bag 17, preferably when the product 18 is a foodstuff. It is important that the gap S between the sealing bar 3 and the back pressure strip 5 has a defined minimum width, otherwise the result may deteriorate despite set and achieved final vacuum. For example, a leakage in the area B of the supply line 12 of the sealing pressure membrane 9 would cause the vacuum generated in the vacuum chamber 16 to draw the ambient pressure into the sealing pressure membrane 9 and the sealing pressure membrane 9 thereby to increase and thus the sealing rail 3 moves downwards and the gap S uncontrollably reduced. The controller 11 recognizes this error via the sensor 10 as soon as the sealing bar 3 moves downwards from the evacuation position. The controller 11 can display an appropriate error message to the operator via the display 6. Fig. 4 shows the chamber machine 1 when sealing the bag 17 after the set final vacuum in the vacuum chamber 16 has been reached. For this purpose, the controller 11 switches the supply line 12 of the sealing pressure membrane 9 from the vacuum pump 13 to the compressed air source 14 by means of the valve 15, so that the compressed air fills the sealing pressure membrane 9 and presses the sealing bar 3 down against the counter pressure strip 5. The clamped between the sealing bar 3 and the back pressure bar 5 bag neck 19 is sealed by the sealing bar 3 is heated itself or on the underside of the sealing bar 3, a heating wire is provided. During the downward movement of the sealing bar 3, the male connector 7 separates the bag neck 19 from the bag 17. In order to maintain the quality of the seal, the pressure applied to the sealing pressure membrane 9 can be controlled by means of a pressure measuring unit 20 arranged on the supply line 12 11 are monitored. In this test, a defect or leakage is detected both in the sealing pressure membrane 9, as well as in the supply line 12 or also the compressed air source 14. After the sealing process has ended after a predetermined time, the controller 11 switches the valve 15 back so that the supply line 12 is again connected to the vacuum pump 13 and the sealing bar 3 is removed from the counter-pressure bar 5 upwards and the bag 17 releases. The vacuum chamber 16 is then vented and the lid 2 can be opened to remove the bag 17 with the product 18. The genus chamber machines 1 also includes chamber belt machines that transport the bag 17 on a conveyor belt in the vacuum chamber 16 and out of the vacuum chamber 16 out, the cover 2 closes and opens automatically. It is conceivable that instead of the compressed air source 14, the sealing pressure membrane 9 is connected during sealing with the ambient pressure, for example, if a final vacuum of 20 mbar a sealing pressure of about 1 bar is sufficient to seal a bag 17 airtight. It is a variant is conceivable in which the counter pressure strip 5 are provided on the cover 2 and the sealing bar 3 with the sealing pressure membrane 9 in the vacuum chamber 16 and instead of the back pressure bar 5, a further sealing rail is provided. claims
    A method for operating a chamber machine (1), in particular a chamber belt machine, a vacuum chamber (16), a lid (2), a sealing device with a sealing rail (3) and a sealing pressure membrane (9), a counter-pressure strip (5), a controller (11) and a sensor (10), the method comprising the following steps: - inserting a bag (17) with a product (18) into the vacuum chamber (16), - closing the lid (2), - evacuating the vacuum chamber (16) and the sealing pressure membrane (9) and testing by means of the sensor (10), whether the sealing rail (3) is in a predetermined evacuation position, - pressurizing the sealing pressure diaphragm (9) after evacuation with compressed air to a sealing pressure between the sealing rail (3) and the counter pressure strip (5) to airtight to close the product (18) in the bag (17).
    [2]
    2. The method according to claim 1, characterized in that the sealing pressure by means of a pressure measuring unit (20) in a supply line (12) of the sealing pressure membrane (9) is checked.
    [3]
    3. The method according to any one of the preceding claims, characterized in that the controller (11) transmits information by means of a display (6) to an operator when the examination of the position of the sealing rail (3) by means of the sensor (10) during the evacuation the sealing pressure membrane (9) or the test of the sealing pressure during the victory is negative.
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    同族专利:
    公开号 | 公开日
    DE102012017827B4|2021-07-15|
    US20140069057A1|2014-03-13|
    CH706890A2|2014-03-14|
    DE102012017827A1|2014-03-13|
    US9550595B2|2017-01-24|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012017827.1A|DE102012017827B4|2012-09-10|2012-09-10|Method for operating a chamber machine|
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