• 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:
    Automatic format change device for automatic horizontal machine forming and filling of flexible containers. The automatic format change device comprises guide rails (2) fixed to a bench (1), guide followers (4) fixed to support trolleys (3) provided to carry respective operative units and slidably coupled said guide rails (2), a motor (6) operatively connected to rotate a spindle (5) parallel to the guide rails (2), a nut (7) coupled to the spindle (5) and retained axially in each carriage (3), a clutch actuator (10) in each carriage (3) moves a clutch element (9) between a position that blocks the rotation of the nut (7) and a position that allows the rotation of the nut (7), and locking means for fixing each carriage (3) in a selected position of the bed (1) according to a predetermined format of flexible packaging to be produced. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2550369A1
    申请号:ES201430650
    申请日:2014-05-05
    公开日:2015-11-06
    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:

    AUTOMATIC FORMAT CHANGE DEVICE FOR AUTOMATIC HORIZONTAL MACHINE FORMER AND FILLER OF FLEXIBLE CONTAINERS
    Technical field
    The present invention relates to an automatic format change device for automatic horizontal machine forming and filling flexible containers comprising automatic means for positioning different operating units along a section of packaging of the machine according to different formats of flexible packaging to produce.
    Background of the invention
    Automatic horizontal machines for forming and filling flexible containers are known which essentially comprise a band supply section that supplies a heat-sealable flexible sheet band from a coil, a packaging forming section in which individual flexible packages are formed from said flexible sheet web, a filling section in which the individual flexible packages are filled with one or more products, and a closing section in which the filled flexible containers are closed and delivered to an outgoing conveyor.
    In the packaging formation section, a continuous strip of double layer of flexible heat-sealable sheet is moved in a direction of horizontal advance through successive operating units that perform vertical weld seams, lower horizontal weld seams, optionally in the continuous strip. placement by welding of closure elements with plug or zipper type, cooling of the welds, and realization of notches and / or punching, before the flexible packages are finally individualized by means of a continuous strip cutting operation in relation to the vertical welds
    Thus, as examples of operating units, vertical welding units, lower horizontal welding units, closing element placement units, cooling units, and punching units can be cited. In some automatic horizontal machines for forming and filling flexible containers, the packaging formation section may include up to ten or more of such operating units arranged successively along it. The operating units are positioned at selected distances from each other according to the flexible packaging format being used.


    producing When it is desired to produce another different flexible packaging format, it is necessary to reposition all operating units according to the new format.
    Automatic horizontal machines for forming and filling flexible containers are known provided with an automatic format change device comprising a bed arranged along the packaging forming section, guide rails fixed to said bed, a plurality of carriages of support, each intended to carry one of the operating units, guide followers fixed to said support carriages and slidably coupled to said guide rails, and locking means for fixing each support carriage with respect to the bed in a selected position according to a predetermined format of flexible container to produce. Through this automatic format change device, the support carriages supporting the different operating units are moved manually along the guide rails and fixed in the desired positions by means of the locking means.
    However, a drawback of this automatic prior art format change device is that manual positioning of the support carts to adapt the packaging formation section to a new format requires considerable labor time, and in addition Provides a low level of positioning accuracy.
    Exhibition of the invention
    The present invention contributes to solving the above and other inconveniences by providing an automatic format change device for automatic horizontal machine forming and filling flexible packages comprising, as is conventional, a bed, guide rails fixed to said bed, a plurality of support carriages provided for carrying respective operating units, guide followers fixed to said support carriages and slidably coupled to said guide rails, and locking means for fixing each support carriage with respect to the bed in a position selected according to a predetermined format of flexible packaging to produce.
    The automatic format change device of the present invention further comprises a spindle parallel to the guide rails rotatably installed in the bed, a motor group operatively connected to rotate said spindle, a plurality of nuts, each coupled to the spindle and installed so that it can rotate but cannot move axially in a coupling support attached to each support carriage, and a clutch element movably installed in each support carriage and moved by an actuator


    of clutch between a clutch position, in which said clutch element interferes with said nut blocking the rotation of the nut relative to said coupling support, and a release position, in which the clutch element allows free rotation of the nut with respect to the coupling support.
    Thus, when the clutch element is held in the clutch position by the clutch actuator and the spindle is rotating by the action of the motor group, the nut cannot rotate with respect to its coupling support and is displaced along the spindle dragging the support car with it.
    At the moment when the clutch element is moved to the release position by the clutch actuator, the nut, which is preferably installed in the coupling support by means of bearings that support radial load and axial load, can freely rotate together with the spindle in the coupling support, whereby the support carriage stops at the desired position and can be fixed to the bed in this desired position by the locking means even if the spindle continues to rotate by the action of the motor group.
    In one embodiment, the nut has an outer peripheral gear and the clutch element has at least one tooth configured to lock in said outer peripheral gear of the nut. For example, the clutch element is in the form of a pivoting lever with a first end connected articulably to the coupling support by an articulation pin and a second end connected to a movable part of said clutch actuator, which can be for example a pneumatic actuator
    In one embodiment, said locking means for fixing each support carriage with respect to the bed comprise a locking actuator, which can be for example a pneumatic actuator, operatively connected to move a brake shoe installed in each support carriage in a position facing a bench retention surface. The brake shoe is moved by the locking actuator between a locking position, in which said brake shoe is pressed against said retaining surface by immobilizing the support carriage with respect to the bed, and a releasing position, in which The brake shoe does not interfere with the retention surface and allows the support car to move relative to the bed.
    The automatic format change device of the present invention preferably comprises detection means for detecting the position of each support carriage in relation to the bed. In one embodiment, these detection means


    they comprise a magnetic element, such as for example a permanent magnet, supported on each support carriage and a linear magnetic detector supported on the bed and arranged parallel to the guide rails to detect the position of said magnetic element, and therefore the carriage of support, in relation to the bench.
    Preferably, said motor group that rotates the spindle comprises an electronically controllable electric servo motor. Also preferably said clutch and lock actuators are electronically controllable. Thus, by means of an adequate electronic control of the motor group, of the clutch actuators and of the blocking actuators in cooperation with position signals emitted by the linear magnetic detectors it is possible to carry out a simultaneous or sequential repositioning of all the support carts, and consequently of all the operating units supported in the support carts, in accordance with format data stored in a memory or entered through a user interface, to adapt the packaging formation section to containers Flexible of different formats.
    Brief description of the drawings
    The foregoing and other features and advantages will be more fully understood from the following detailed description of an embodiment, which is merely illustrative and not limiting, with reference to the accompanying drawings, in which:
    Fig. 1 is a top view of an automatic format change device for automatic horizontal flexible forming and filling machine according to an embodiment of the present invention;
    Fig. 2 is a perspective view showing a bottom of one of the support carriages of the automatic format change device of Fig. 1;
    Fig. 3 is a cross-sectional view taken on the plane III-III of Fig. 1;
    Fig. 4 is a cross-sectional view taken along the plane IV-IV of Fig. 3; Y
    Fig. 5 is a cross-sectional view taken along the plane V-V of Fig. 4.
    Detailed description of an embodiment example
    Referring to the Figures, there is shown an automatic format change device 30 for automatic horizontal machine forming and filling flexible packaging


    according to an embodiment of the present invention, which comprises a bed 1 that provides two separate support surfaces 25, on which respective guide rails 2 are fixed. On the bed 1, between the two support surfaces 25 , a trapezoidal spindle 5 is arranged rotatably arranged parallel to the guide rails 2, and a motor group 6, which preferably comprises an electric servo motor, is operatively connected to rotate the spindle 5.
    Along the bench 1, a plurality of support carriages 3 are arranged, each of which comprises a platform 24 intended to be attached thereto a respective operating unit (not shown). The operating units may be selected, for example, from vertical welding units, lower horizontal welding units, locking element placement units, cooling units, and cutting units included in a packaging forming section of the automatic horizontal forming machine and flexible container filler.
    Each of the support carriages 3 has guide followers 4 fixed in a lower part of the platform 24 which are operatively slidably coupled to said guide rails 2. Thus, the support carriages 3 can slide individually and guided along the bench 1. The platform 24 of each support carriage 3 also has a coupling support 8 fixed on its lower part in which a corresponding nut 7 is installed, which, in an operative situation, is coupled to spindle 5.
    The nut 7 is installed in the coupling support 8 so that it can rotate but cannot move axially with respect to each support carriage 3. For this, the coupling support 8 comprises a bearing carrier body 26 (Fig. 4) which has about seats in which outer rings of bearings 18 are seated and nut 7 has seats in which inner rings of said bearings are seated 18. Side covers 27 fixed to bearing carrier body 26 retain bearings 18 in the axial direction . The bearings 18 are, for example, deep groove ball bearings suitable for supporting radial loads and axial loads.
    The coupling support 8 of each support carriage 3 has a clutch element 9, which is in the form of a pivoting lever having a first end articulatedly connected to the coupling support 8, and more specifically to the bearing carrier body 26, by a articulation pin 13. The nut 7 has an outer peripheral teeth 11 formed between the two seats of the bearings 18, and the


    Clutch 9 has a tooth 12 configured to lock between any two teeth of said outer peripheral teeth 11 of nut 7.
    The coupling support 8, and more specifically the bearing carrier body 26, is fitted with an actuator support 28 in which a clutch actuator 10 is supported, which in the illustrated embodiment is a pneumatic actuator comprising a cylinder 14 articulated connected to the actuator support 28 by an articulation pin 15 and a movable rod 16 having one end connected to a piston disposed within the cylinder 14 and another end articulatedly connected to a second end of the clutch element 9 by an articulation pin 17.
    Activation of the clutch actuator 10 in one direction or another moves the clutch element 9 between a clutch position (not shown), in which said tooth 12 of the clutch element 9 interferes with the outer peripheral teeth 11 of the nut 7 blocking the rotation of the nut 7 with respect to the coupling support 8, and a release position (Fig. 5), in which the tooth 12 of the clutch element 9 is separated from the outer peripheral teeth 11 of the nut 7 allowing free rotation of nut 7 with respect to coupling support 8.
    The automatic format change device includes locking means for fixing each support carriage 3 with respect to the bed 1 in a selected position in accordance with a predetermined flexible package format to be produced. In the illustrated embodiment, these locking means comprise a brake shoe 19 installed in a locking support 29 fixed in the lower part of the platform 24 of each support carriage 3. In the blocking support 29, an actuator is also installed. lock 20 operatively connected to move the brake shoe 19 between a lock position (not shown), wherein said brake shoe 19 is pressed by the lock actuator 20 against a retaining surface 21 of the bed 1, and a release position (Figs. 3 and 5), in which the brake shoe 19 is separated from said retaining surface 21 of the bed 1.
    In the illustrated embodiment, the locking actuator 20 is a pneumatic actuator having a large diameter plunger and short stroke, and the brake shoe 19 is a front surface of a movable member connected to the plunger.
    The automatic format change device further includes detection means for detecting the position of each support carriage 3 in relation to the bench 1. In the illustrated embodiment, these detection means comprise a magnetic element 22, such


    such as a permanent magnet, supported on a detection support 30 fixed at the bottom of the platform 24 of each support carriage 3 in a position opposite and adjacent to a linear magnetic detector 23 supported on a detector support 31 fixed to the bed 1 and arranged parallel to the guide rails 2. The linear magnetic detector 23 is configured to detect the position of the magnetic element 22 and therefore the position of the support carriage 3 in relation to the bed 1.
    The scope of the present invention is defined in the appended claims.

    权利要求:
    Claims (8)
    [1]
    1.- Automatic format change device for automatic horizontal machine for forming and filling flexible containers, comprising a bed (1), guide rails (2) fixed to said bed (1), a plurality of support carriages (3 ) provided for carrying respective operating units, guide followers (4) fixed to said support carriages (3) and slidably coupled to said guide rails (2), and locking means for fixing each support carriage ( 3) with respect to the bed (1) in a selected position in accordance with a predetermined format of flexible container to be produced, characterized by further comprising a spindle (5) parallel to the guide rails (2) rotatably installed in the bed (1) ), a motor group (6) operatively connected to rotate said spindle (5), a plurality of nuts (7), each coupled to the spindle
    (5)  and installed so that it can rotate but cannot move axially in a coupling support (8) attached to each support carriage (3), and a clutch element (9) movably installed in each support carriage (3) and moved by a clutch actuator (10) between a clutch position, in which said clutch element (9) interferes with said nut (7) blocking the rotation of the nut (7) with respect to said coupling support (8 ), and a release position, in which the clutch element (9) allows free rotation of the nut (7) with respect to the coupling support (8).
    [2]
    2. Automatic format change device according to claim 1, characterized in that the nut (7) has an outer peripheral teeth (11) and the clutch element (9) has at least one tooth (12) configured to lock in said outer peripheral teeth
    (eleven)  of the nut (7).
    [3]
    3. Automatic format change device according to claim 2, characterized in that the clutch element (9) has a first end articulated connected to the coupling support (8) by an articulation pin (13) and a second end connected to a movable part of said clutch actuator (10).
    [4]
    4. Automatic format change device according to claim 2 or 3, characterized in that the clutch actuator (10) is a pneumatic actuator and comprises a cylinder
    (14) articulatedly connected to the coupling support (8) by an articulation pin (15) and a movable rod (16) articulatedly connected to said second end of the clutch element (9) by an articulation pin (17).

    [5]
    5. Automatic format change device according to claim 1, characterized in that the nut (7) is installed in the coupling support (8) by means of bearings (18) that support radial load and axial load.
    [6]
    6. Automatic format change device according to claim 1, characterized by
    5 that said locking means comprise a brake shoe (19) installed in each support carriage (3) and moved by a locking actuator (20) between a locking position, wherein said brake shoe (19) is pressed against a retaining surface (21) of the bed (1), and a release position, in which the brake shoe
    (19) does not interfere with said retention surface (21) of the bed (1).
    10. Automatic format change device according to claim 6, characterized in that said locking actuator (20) is a pneumatic actuator.
    [8]
    8. Automatic format change device according to claim 1, characterized in that it also comprises detection means for detecting the position of each support carriage (3) in relation to the bench (1).
    9. Automatic format change device according to claim 8, characterized in that said detection means comprise a magnetic element (22) supported on each support carriage (3) and a linear magnetic detector (23) supported on the bed (1) and arranged parallel to the guide rails (2) to detect the position of said magnetic element (22) and the support carriage (3) in relation to the bed (1).
    10. Automatic format change device according to claim 9, characterized in that the magnetic element (22) is a permanent magnet.
    [11]
    11. Automatic format change device according to claim 1, characterized in that said motor group (6) comprises an electric servomotor.

     DRAWINGS 



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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    2016-07-21| FG2A| Definitive protection|Ref document number: 2550369 Country of ref document: ES Kind code of ref document: B1 Effective date: 20160721 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201430650A|ES2550369B1|2014-05-05|2014-05-05|Automatic format change device for automatic horizontal machine forming and filling flexible packaging|ES201430650A| ES2550369B1|2014-05-05|2014-05-05|Automatic format change device for automatic horizontal machine forming and filling flexible packaging|
    EP15380015.6A| EP2942547B1|2014-05-05|2015-04-24|Automatic format-changing device for an automatic horizontal flexible container forming and filling machine|
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