• 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:
    Welding or cutting unit for automatic forming and filling machine for flexible packaging. The welding or cutting unit comprises a removable chassis (7) carrying a pair of movable supports (1, 2) located on opposite sides of a passage (5) through which a strip of sheet (b) to be welded is moved or cutting, a pair of thermal pressure bars or cutting blades (3, 4) fixed to the movable supports (1, 2), and a driving mechanism including a driven coupling (8). The removable chassis (7) is attachable to guide supports of a structure of the machine and can be placed in a working position or removed from the guide supports. In the working position, the driven coupling (8) is automatically coupled with a conductive coupling driven by a motor installed in the structure. The drive mechanism converts a rotary movement of the motor into a reciprocating movement of the movable supports (1, 2). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2578084A1
    申请号:ES201530063
    申请日:2015-01-20
    公开日:2016-07-20
    发明作者:Francisco Mora Flores；Menna Fité Sala；Enric Marti Roche
    申请人:Mespack SL；
    IPC主号:
    专利说明:

    WELDING OR CUTTING UNIT FOR AUTOMATIC TRAINING MACHINE ANDFLEXIBLE CONTAINER FILLER
    Technical field
    The present invention relates in general to a welding or cutting unit for automatic forming and filling machine for flexible packaging, and more particularly to a removable welding or cutting unit configured as a module in which cutting blades can be installed to act as a cutting unit or thermal pressure bars to act as a welding unit, and that can be coupled to an automatic machine that forms and fills flexible containers or extracted to perform maintenance tasks on the welding or cutting unit and / or the machine. In addition, a module can be replaced by another analog module while the maintenance of the welding or cutting unit lasts.
    Background of the invention
    EP 0999134 A2 discloses an automatic flexible packaging forming and filling machine comprising a strip supply section that supplies a sheet strip of thermoplastic material from a coil, a packaging forming section that forms individual flexible packages to Starting from the sheet web, and a filling section that fills the individual flexible packages with one or more products, closes them and delivers them to an outgoing conveyor. The packaging forming section includes a folding unit, where the sheet web is folded longitudinally in a "V" shape to provide multiple overlapping layers, one or more welding units, where transverse welding lines are made, and a or more cutting units where the sheet web is cut transversely in relation to the welding lines to form the individual flexible packages. The sheet web is displaced through the welding units and cutting units in a horizontal direction.
    Document US 7067037 A1 describes an automatic machine for forming and filling flexible containers in which the sheet web is displaced through the welding units and cutting units in a vertical direction. The sheet strip is wound around a vertical supply tube that supplies the material to be packaged, and a vertical welding unit joins two portions of sheet strip superimposed on the


    supply tube through a longitudinal welding line. One or more welding units are located below the supply tube where transverse welding lines are made, and one or more cutting units where the sheet band is cut transversely in relation to the transverse welding lines to form the packages flexible individual.
    Automatic machines for forming and filling flexible containers are also known, similar to that described in the aforementioned document US 7067037 A1, in which the sheet strip is cut longitudinally into two strips that are rotated and superimposed, instead of being wound around a supply tube, and where the two overlapping strips are joined by two longitudinal weld lines adjacent to their side edges to provide the sheet band with multiple overlapping layers that is moved in a vertical direction through one or more welding units where transverse welding lines are made, and one or more cutting units where the sheet band is cut transversely in relation to the transverse welding lines to form the individual flexible packages.
    In the different types of automatic machines for forming and filling flexible packages described above, each transverse welding unit and each cutting unit includes first and second movable supports located on opposite sides of a passage through which the sheet band provided with multiple overlapping layers are displaced step by step, and a drive mechanism that converts a rotating movement imparted by a motor into a simultaneous and opposite reciprocating movement of the first and second movable supports. In the welding units the first and second movable supports have fixed first and second thermal pressure bars to weld the sheet band and in the cutting units the first and second movable supports have fixed first and second cutting blades for cutting The foil band. Welding operations and cutting operations are carried out during intervals of the step-by-step movement in which the sheet web is stopped.
    A drawback of welding units and cutting units in automatic machines for forming and filling flexible containers of the types described above is that they are integrated in the automatic machine for forming and filling flexible containers and when it is desired to perform maintenance tasks on the units welding or cutting it is necessary to stop the machine and manipulate the welding or cutting units without removing them from the machine or disassembling elements or parts of the welding or cutting units to


    repair or replace them while the machine remains stationary, which implies a decrease in machine productivity.
    Exhibition of the invention
    The present invention contributes to mitigating the above and other inconveniences by providing a welding or cutting unit for an automatic forming and filling machine for flexible packaging comprising first and second movable supports located on opposite sides of a passage through which a band is displaced. of a sheet of thermoplastic material provided with multiple overlapping layers to be welded and cut to form flexible containers in the automatic machine for forming and filling flexible containers, first and second thermal pressure bars or first and second cutting blades fixed to the first and second movable supports, respectively, and a drive mechanism that converts a rotary movement imparted by a motor into a simultaneous and opposite reciprocating movement of the first and second movable supports to weld the sheet web with the first and second thermal bars of pressure or to cut the sheet band with the s first and second cutting blades.
    In the welding or cutting unit of the present invention, the first and second movable supports, carrying the first and second thermal pressure bars or the first and second cutting blades, and the drive mechanism are installed in a removable chassis that defines The mentioned passage. The removable chassis is slidably attachable to guide supports fixed to a structure of the automatic machine for forming and filling flexible containers, so that the removable chassis can be placed in a working position on the guide supports or removed from the supports guide and separate from the machine structure. The drive mechanism has a driven coupling element installed in the removable chassis in a position such that, when the removable chassis is placed in said working position, the driven coupling element is automatically coupled with a conductive coupling element installed in the structure of the machine and driven by the engine.
    Thus, the removable chassis of the welding or cutting unit, with the movable supports, the thermal pressure bars or the cutting blades, and the drive mechanism installed therein, constitutes a module that can be placed in the machine in the working position or can be completely and optionally removed by another analog module by means of easy and quick installation and removal operations while the motor and the coupling element remain mounted on the machine structure.


    This allows maintenance and / or repair of the operating elements and of the drive mechanism of the welding or cutting unit, minimizing the periods of time in which the machine must remain stopped.
    In one embodiment, the removable chassis has guides perpendicular to the passage,
    or more specifically to the position of the sheet band in the passage, and the first and second movable supports are coupled to these guides so that they can slide along them maintaining positions parallel or approximately parallel to the passage.
    The drive mechanism comprises a rotating drive shaft arranged perpendicular to the guides and connected to the coupling element driven by a motion transmission. First and second eccentric pins parallel to the drive shaft are fixed on the drive shaft. In the first and second movable supports are fixed first and second transmission vanes parallel to the first and second eccentric vanes. A first connecting rod has one end connected to the first eccentric journal and another end connected to the first transmission journal, and a second connecting rod has one end connected to the second eccentric journal and another end connected to the second transmission journal.
    Thus, when the drive shaft is rotated by the motor alternately at a predetermined angle in opposite directions, the first and second cranks convert the rotational movements of the drive shaft into simultaneous and opposite linear reciprocating movements of the first and second movable supports. and of the first and second thermal pressure bars or first and second cutting blades fixed thereto along the guides.
    By means of simultaneous and opposite linear reciprocating movements, the first and second movable supports alternate between an open position, in which the first and second thermal pressure bars or the first and second cutting blades are separated from each other and separated from the passage , or more specifically the position of the sheet band in the passage, and a closed position, in which the first and second thermal pressure bars
    or the first and second cutting blades are adjacent to each other and interfere with the passage, or more specifically with the position of the sheet band in the passage.
    In one embodiment, the driven coupling element is installed in the removable chassis in a position parallel to the drive shaft, and the motion transmission comprises a first pulley fixed coaxially to the driven coupling element,


    a second pulley fixed coaxially to the drive shaft and a drive belt installed on said first and second pulleys. The conductive coupling element is installed in the machine structure in a coaxial position with the conductive coupling element.
    The automatic flexible packaging forming and filling machine includes means for controlling the operation of the motor and possibly other elements of the welding or cutting unit of the present invention, preferably including an operating mode that is applied when the removable chassis is installed in the Working position in the machine structure and an extraction mode that is applied when you want to remove the removable chassis from the machine structure, while the removable chassis is removed, and when you want to reinstall the removable chassis.
    Preferably, the removable chassis carries a locking device that locks the first and second movable supports in said open position and maintains the driven coupling in an angular extraction position when the welding or cutting unit is in the extraction mode. The mentioned angular position of extraction of the driven coupling corresponds to an angular position of waiting in which the motor maintains the conductive coupling element in the extraction mode. Thus, when the removable chassis is installed again in the structure of the machine by sliding along the guide supports to the working position, the driven coupling will automatically be coupled with the conductive coupling. Optionally, this locking device is automatically operated.
    Also preferably, the welding or cutting unit comprises a fixing device by means of which the removable chassis is fixed to the structure of the automatic forming and filling machine of flexible containers when the removable chassis is in said working position. Optionally, this fixing device is manually operated. Preferably, the removable chassis has at one front end thereof a handle by which the removable chassis can be pulled for removal from the guiding supports of the machine structure and transported.
    Preferably, when the unit acts as a welding unit, the first and second thermal pressure bars are rigidly fixed to the corresponding first and second movable supports at the same level and in positions mutually parallel and parallel to the passage, or more specifically to the position of the sheet band in the passage.


    Preferably, when the unit acts as a cutting unit, the first cutting blade is rigidly fixed to the first mobile support in a position substantially parallel or slightly inclined with respect to the passage, or more specifically to the position of the sheet band in the passage , while the second cutting blade is installed in cantilever on the second movable support at a higher level and in a slightly inclined position with respect to the passage, or more specifically with respect to the position of the sheet web in the passage. For this, the second cutting blade has an anchor end rigidly fixed to one end of the second movable support and a free end. This free end of the second cutting blade may optionally be in contact with an elastomer block attached to another end of the second movable support opposite the anchoring end to dampen possible vibrations.
    Brief description of the drawings
    The foregoing and other features and advantages will be more fully understood from the following detailed description of an exemplary embodiment, which is merely illustrative and not limiting, with reference to the accompanying drawings, in which:
    Fig. 1 is a perspective view of a welding or cutting unit for automatic forming and filling machine of flexible packages according to an embodiment of the present invention, equipped with cutting blades and arranged in an open position;
    Fig. 2 is a perspective view of the welding unit of Fig. 1 or section taken from a reverse angle;
    Fig. 3 is a top view of the welding or cutting unit of Figs. 1 and 2;
    Fig. 4 is a cross-sectional view taken along the plane IV-IV of Fig. 3;
    Fig. 5 is a cross-sectional view similar to Fig. 4, but arranged in a closed position;
    Fig. 6 is a cross-sectional view similar to Fig. 4, but with the welding and cutting unit equipped with thermal pressure bars;
    Fig. 7 is a cross-sectional view taken on the plane VII-VII of Fig. 3;
    Fig. 8 is a cross-sectional view taken on the plane VIII-VIII of Fig. 3;


    Fig. 9 is a cross-sectional view taken along the plane IX-IX of Fig. 3;
    Fig. 10 is a cross-sectional view taken along the X-X plane of Fig. 3;
    Fig. 11 is a cross-sectional view taken along the plane XI-XI of Fig. 3;
    Fig. 12 is a schematic plan view of the welding and cutting unit extracted from a structure of the automatic forming and filling machine of flexible packages;
    Fig. 13 is a schematic plan view of the welding and cutting unit installed in a working position in the structure of the automatic forming and filling machine of flexible packages; Y
    Fig. 14 is an enlarged detail of Fig. 2 showing a driven coupling element of the welding and cutting unit.
    Detailed description of an embodiment example
    Making first relation to Figs. 1, 2 and 3, numerical reference 50 indicates a welding or cutting unit for automatic forming machine and flexible container filler according to an embodiment of the present invention, which comprises a removable chassis 7 having a front wall 24, a rear wall 25 and two side walls 26 defining between them a passage 5 through which, when the welding or cutting unit 100 is installed in a working position in a structure of the automatic forming and filling machine of flexible packages, a strip of sheet B (Fig. 3) of thermoplastic material provided with multiple overlapping layers is displaced. This strip of sheet B is going to be welded and cut to form flexible packages.
    The removable chassis 7 includes in some regions close to the front and rear walls 24, 25 crossbars 27 on which guides 6 are fixed perpendicular to the passage 5, or more specifically perpendicular to the position provided for the strip of sheet B in the passage 5, and within the removable chassis 7 there are first and second movable supports 1, 2 that are fixed to first and second slides 28, 29, respectively, slidably coupled to the guides 6. Figs. 4, 5, 6 and 10 better show the arrangement of the crossbars 27, the guides 6, the first and second slides 28 and the first and second movable supports 1, 2 fixed thereto.
    The first and second movable supports 1, 2 are located on opposite sides of the passage 5. On the first movable support 1 a first cutting blade 3 is fixed and on the second


    mobile support 2 is fixed a second cutting blade 4. The first and second cutting blades 3, 4 have respective edges slightly inclined in divergent directions with respect to the position of the sheet band B in the passage 5.
    The first cutting blade 3 is rigidly fixed to the first mobile support 1 at a first level and has its edge at an upper leading edge, and the second cutting blade 4 is cantilevered installed in the second mobile support 2 at a second upper level. than the first level and has its edge on a lower leading edge. For this, the second cutting blade 4 has an anchor end 2a rigidly fixed to one end of the second mobile support 2 by means of a supplement 30 and a free end 4b opposite the anchor end 4a.
    As best shown in Figs. 4 and 5, the cutting edge of the first cutting blade 3 is flush with the cutting edge of the second cutting blade 4. In the removable chassis 7 there is also installed a drive mechanism that converts a rotating movement imparted by an M motor (Figs 13 and 14) in a simultaneous and opposite reciprocating movement of the first and second movable supports 1, 2 along the guides 6 between an open position (Fig. 4), in which the first and second cutting blades 3, 4 are separated from each other and separated from the position of the sheet band B in the passage 5, and a closed position (Fig. 5), in which the first and second cutting blades are adjacent to each other and interfere with the sheet band B in the passage 5 to transversely cut the sheet band B.
    Alternatively, as shown in Fig. 6, where the welding or cutting joints of the present invention act as a welding unit, a first thermal pressure bar 33 is fixed on the first mobile support 1 and on the second mobile support 2 is a second thermal pressure bar 34 is fixed. The first and second thermal pressure bars 3, 4 are heated, for example by electric resistors, and have respective pressure surfaces parallel to the position of the sheet band B in the passage 5 and located at the same level. When the first and second movable supports 1, 2 are moved to the closed position the first and second thermal pressure bars 3, 4 press against opposite sides of the sheet band B at the same time that they apply heat to cross-weld the sheet band B.
    The drive mechanism comprises a drive shaft 9 perpendicular to the guides 6 rotatably supported by bearings housed in bearing supports 31 fixed to the cross members 27 (Fig. 11). The drive shaft 9 extends all along the removable chassis 7. On an outer side of the rear wall 25 of the removable chassis 7 there is a driven coupling element 8 supported by bearings


    housed in a bearing support 35 fixed to the rear wall 25 so that the driven coupling element 8 can rotate freely with respect to an axis parallel to the drive shaft 9.
    On the inner side of the rear wall 25 of the removable chassis 7 there is a first pulley 16 fixed coaxially to the coupling element driven 8 by an axis 37 (Figs. 7, 8 and 9) and at one end of the drive shaft 9 adjacent to the rear wall 25 is fixed a second pulley 17 coaxial to the drive shaft 9. A drive belt 18 is installed on said first and second pulleys 16, 17 so that turns of the driven coupling element 8 are transmitted to the drive shaft 9. On the inner side of the rear wall 25 of the removable chassis 7, a tension pulley 38 (Fig. 7) is also installed which presses against the drive belt 18. The position of the tension pulley 38 is adjustable to adjust the tension of the drive belt 18.
    In the second pulley 17, first and second eccentric pins 10, 11 (better shown in Fig. 8) are fixed parallel to the drive shaft 9. At one end of the drive shaft 9 adjacent to the front wall 24 a wheel is fixed of eccentrics 32 to which other first and second eccentric pins 10, 11 (better shown in Fig. 9) are coaxial to the first and second eccentric pins 10, 11 fixed to the second pulley 17, respectively. First mutually coaxial first transmission pins 12 are fixed at both ends of the first mobile support 1 and second mutually coaxial second transmission pins 13 are fixed at both ends (Figs. 8 and 9).
    The drive mechanism further comprises a pair of first connecting rods 14 and a pair of second connecting rods 15 (better shown in Figs. 8 and 9). Each of the first connecting rods 14 has one end connected to one of the first eccentric pins 10 and another end connected to one of the first transmission pins 12. Each of the second connecting rods 15 has an end connected to one of the second pins. eccentrics 11 and another end connected to one of the second transmission pins 13.
    Thus, the first and second cranks 14, 15 convert alternating turns in opposite directions of the drive shaft 9 into simultaneous and opposite linear reciprocating movements of the first and second movable supports 1, 2 along the guides 6 and the first and second cutting blades 3, 4 (Figs. 1 to 5) or the first and second thermal pressure bars 33, 34 (Fig. 6) fixed to the first and second movable supports 1, 2 to make successive cuts or welds in the strip of sheet B.


    Referring now to Figs. 12 and 13, the automatic flexible packaging forming and filling machine in which the welding or cutting unit of the present invention operates comprises a structure E in which guide supports S are fixed. In structure E there is a coupling element conductor A installed in a position adjacent to an inner end of the guide supports S and a motor M operatively connected to rotate the conductor coupling element A.
    The front, rear and side walls 24, 25, 26 of the removable chassis 7 have smooth lateral and lower outer surfaces that fit in a guided and sliding manner on guide supports S fixed to the structure E of the machine. When the removable chassis 7 is coupled to the guide supports S, the driven coupling element 8 of the removable chassis 7 is coaxially aligned with the conductive coupling element A of the structure E.
    Thus, by sliding the removable chassis 7 along the guide supports S into the structure E of the machine, the removable chassis 7 can be placed in a working position (Fig. 13) with respect to the structure E in which the driven coupling element 8 of the removable chassis 7 is automatically coupled with the conductive coupling element A of the structure E. Also, by sliding the removable chassis 7 along the guide supports S out of the structure E of the machine, The removable chassis 7 can be removed from the guide supports S and separated from the structure E of the machine (Fig. 12).
    Fig. 14 shows the driven coupling element 8 of the removable chassis 7, which comprises a cylindrical stud having a diametral groove 36 conjugated with a diametral rib (not shown) provided in the conductive coupling element A of the structure E, so that the driven coupling element 8 of the removable chassis 7 and the conductive coupling element A of the structure E can only be mutually coupled when both are in a predetermined relative angular position.
    A locking device (not shown) is arranged in the removable chassis 7, which locks the first and second movable supports 1, 2 in an open position and keeps the driven coupling 8 in an angular extraction position when the welding or cutting unit is in an extraction mode, and this angular extraction position of the driven coupling 8 corresponds to an angular waiting position in which the motor M maintains the conductive coupling element A while the welding or cutting unit is in the extraction mode.


    In one embodiment (not shown), the locking device comprises, for example, a movable locking element between a blocking position and a releasing position, and a spring arranged to push the blocking element towards the blocking position. In the locked position, the blocking element is inserted into an recess formed in one of the first and second movable supports immobilizing it. In the release position, the blocking element is outside the mentioned recess allowing a free movement of the drive mechanism. This locking element has a rod which in the blocking position protrudes from the rear wall 25 of the removable chassis 7, and which when the removable chassis 7 is placed in the working position interferes with the structure E of the machine and is pushed towards inside the removable chassis 7 moving the locking element to the release position against the force of the spring.
    When the removable chassis 7 is in said working position, the removable chassis 7 is fixed to the structure E of the machine by means of fixing screws 20 inserted through through holes 22 formed in lateral extensions 21 of the front wall 24 of the removable chassis 7 and that are screwed into threaded holes F existing in the structure E of the automatic forming and filling machine for flexible packaging. The fixing screws 20 have heads configured to be manually operated.
    On the front wall 24 of the removable chassis 7 there is a folding handle 23 by which removable chassis 7 can be handled comfortably.
    In the embodiment described in relation to Figs. 1-14, the removable chassis 7 is adapted to operate in an automatic machine for forming and filling flexible vertical containers, in which the web of sheets with multiple overlapping layers is moved in a vertical direction through one or more units welding where transverse welding lines are made, and one or more cutting units where the sheet band is cut transversely in relation to the welding lines to form the individual flexible packages. However, the welding or cutting unit of the present invention is also applicable to an automatic machine for forming and filling flexible containers of horizontal type, in which the web of sheets with multiple overlapping layers is moved in a horizontal direction through one or more welding units and one or more cutting units, by slight modifications and / or adaptations that will easily occur to a person skilled in the art.
    Also, in the embodiment described in relation to Figs. 1-14, the removable chassis 7 is placed in a stationary work position in relation to the structure of the


    machine, the sheet band is moved step by step, and welding or cutting operations are carried out in the intervals of the step by step movement in which the sheet band is stopped. However, in an alternative embodiment, the removable chassis 7 is placed in a working position on a mobile carriage provided with movements of
    5 Forward and reverse in relation to the structure of the machine, the sheet belt is displaced with a continuous movement, and welding or cutting operations are carried out during the advance movements of the mobile carriage in which the removable chassis 7 moves at the same speed as the sheet band.
    The scope of the present invention is defined in the appended claims.

    权利要求:
    Claims (10)
    [1]
    1.- Welding or cutting unit for automatic forming and filling machine for flexible packaging, comprising:
    first and second movable supports (1, 2) located on opposite sides of a passage (5)
    5 through which a strip of sheet (B) of thermoplastic material provided with multiple overlapping layers to be welded and cut to form flexible packages in the automatic machine for forming and filling flexible packages;
    first and second thermal pressure bars (33, 34) or first and second cutting blades (3, 4) fixed to the first and second movable supports (1, 2), respectively; Y
    10 a drive mechanism that converts a rotating movement imparted by a motor (M) into a simultaneous and opposite reciprocating movement of the first and second movable supports (1, 2) to weld or cut said sheet web (B) with said first and second thermal pressure bars (33, 34) or with said first and second cutting blades (3, 4), respectively,
    15 characterized in that:
    the first and second movable supports (1, 2), the first and second thermal pressure bars (33, 34) or first and second cutting blades (3, 4), and said drive mechanism are installed in a removable chassis ( 7) defining said passage (5);
    said removable chassis (7) is slidably coupled to guide supports (S)
    20 fixed to a structure (E) of the automatic forming and filling machine for flexible packages and can be placed in a working position on said guide supports (S) or removed from the guide supports (S); Y
    The drive mechanism has a driven coupling element (8) installed in the removable chassis (7) that automatically engages, when the removable chassis (7) is
    25 placed in said working position, with a conductive coupling element (A) installed in said structure (E) of the automatic forming and filling machine for flexible packaging and driven by said motor (M).
    [2]
    2. Welding or cutting unit according to claim 1, characterized in that the removable chassis (7) has mounted guides (6) perpendicular to the passage (5), and the first and
    30 second movable supports (1, 2) are slidably coupled to said guides (6).

    [3]
    3. Welding or cutting unit according to claim 2, characterized in that said drive mechanism comprises a rotating drive shaft (9) arranged perpendicular to the guides (6) and connected to the coupling element driven (8) by a transmission of movement, first and second eccentric pins (10, 11) parallel to said drive shaft (9) and fixed to the drive shaft (9), first and second transmission pins (12, 13) fixed in the first and second movable supports (1, 2), respectively, a first connecting rod (14) having one end connected to said first eccentric journal (10) and another end connected to said first transmission journal (12), and a second connecting rod (15 ) having one end connected to said second eccentric journal (11) and another end connected to said second transmission journal (13).
    [4]
    4. Welding or cutting unit according to claim 3, characterized in that said motion transmission comprises a first pulley (16) fixed coaxially to the driven coupling element (8), a second pulley (17) coaxially fixed to the drive shaft (9) and a transmission belt (18) installed on said first and second pulleys (16, 17).
    [5]
    5. Welding or cutting unit according to claim 1, characterized in that the second cutting blade (4) is installed in a cantilever on the second mobile support (2) and has an anchoring end (4a) fixed to one end of the second mobile support (2) and a free end (4b).
    [6]
    6. Welding or cutting unit according to claim 1, characterized in that the removable chassis (7) carries a locking device that locks the first and second movable supports (1, 2) in an open position and keeps the coupling driven ( 8) in an angular extraction position when the welding or cutting unit is in an extraction mode, said angular extraction position of the driven coupling (8) corresponding to an angular waiting position in which the motor (M) maintains the conductive coupling element (A) in said extraction mode.
    [7]
    7. Welding or cutting unit according to claim 1, characterized in that the removable chassis (7) comprises a fixing device by means of which the removable chassis (7) is fixed to the structure (E) of the automatic forming machine and flexible container filler when the removable chassis (7) is in said working position.
    [8]
    8. Welding or cutting unit according to claim 7, characterized in that said fixing device comprises fixing screws (20) inserted through some

    through holes (22) formed in extensions of the removable chassis (7) and screwed in threaded holes existing in the structure (E) of the automatic forming and filling machine for flexible packaging.
    [9]
    9. Welding or cutting unit according to claim 8, characterized in that said
    5 fixing screws (20) have heads configured to be manually operated.
    [10]
    10. Welding or cutting unit according to claim 1, characterized in that the removable chassis (7) has a handle (23) at a front end thereof.

    DRAWINGS
    17




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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2110514A5|1970-10-20|1972-06-02|Plastic Service|Heat sealing machine - adjustable while operating to suit different sizes or thickness of plastic bags|
    EP0999134A2|1998-11-03|2000-05-10|Klockner Bartelt, Inc.|Modular packaging machine with web tension control|
    US20070164489A1|2004-06-24|2007-07-19|Minghetti Bianca E|Apparatuses and processes for packaging products|
    US6665999B1|1999-09-07|2003-12-23|Recot, Inc.|Seal jaw modules for reclose bag modification to vertical form, fill, and seal packaging system|CN110366525A|2017-02-28|2019-10-22|Gea食品策划韦尔特公司|Improved vertical flowing wrapper inspection|
    IT201700117793A1|2017-10-18|2019-04-18|Mbp Srl|VERTICAL PACKAGING MACHINE WITH CARTRIDGE WELDING SYSTEM|
    法律状态:
    2017-04-25| FG2A| Definitive protection|Ref document number: 2578084 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170425 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201530063A|ES2578084B1|2015-01-20|2015-01-20|Welding or cutting unit for automatic forming and filling machine for flexible packaging|ES201530063A| ES2578084B1|2015-01-20|2015-01-20|Welding or cutting unit for automatic forming and filling machine for flexible packaging|
    EP15382621.9A| EP3047961B1|2015-01-20|2015-12-14|Welding or cutting unit for an automatic flexible container forming and filling machine|
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