• 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:
    Packaging machine Jaw assembly (10) that receives a tubular bag material (11) that is sealed transversely and cut transversely by the jaw assembly (10) to form snack bags (12). The tubular bag material (11) is supplied in a downward direction (13). The jaw assembly (10) includes sealing jaws (27, 28) with the jaws (27, 28) acting in pairs to transversely seal the tubular bag material (11). Each of the jaws (27, 28) has an extreme surface (29) that heats and couples the tubular bag material (11) to form the seal therein. Each surface (29) is separated from its respective axis of rotation by a radius (31). Most preferably the radius (31) is less than 85 mm but greater than 65 mm. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2725469A2
    申请号:ES201930225
    申请日:2019-03-12
    公开日:2019-09-24
    发明作者:Alfred Alexander Taylor；Deni Ferfolja
    申请人:TNA Australia Pty Ltd；
    IPC主号:
    专利说明:

    [0001]
    [0002] Packing machine
    [0003]
    [0004] TECHNICAL SECTOR
    [0005]
    [0006] The present invention relates to jaw assemblies for packaging machines that produce product bags, such as snack bags.
    [0007]
    [0008] BACKGROUND
    [0009]
    [0010] The packaging machines receive the material for the bags in tubular form. The product to be packaged is supplied to the interior of the tubular bag material, then sealing and cutting the packaging machine the tubular bag material to form product bags. The tubular bag material is formed by a support of a forming device to which the strip-shaped packaging sheet is supplied. Forming devices and packaging machines are described in US Patents 4910943, 5622032, 4663917, 6655110, 7159376, 7600630, 7383672, 4753336, 7124559, 7415809, 7152387 and 7472528, and Australian patent applications 2012258403, 20122584, 2012257, 2012257, 2012257, 2012 and 2012201595, and 2011360138 and the international application PCT / EP2013 / 052754.
    [0011]
    [0012] The tubular material provided by the support of the forming device is sealed longitudinally. This function is performed by heating the tubular bag material along the longitudinally overlapping edges and applying pressure to said overlapping longitudinal edges.
    [0013]
    [0014] Located above the forming device is a weighing machine that supplies batches of product to a hopper that extends towards the support of the forming device.
    [0015]
    [0016] The tubular bag material passes through the support of the forming device, is sealed longitudinally and is then supplied to the packaging machine. While this is happening, batches of product are supplied inside the tubular bag material by means of the weighing machine, the batches being made up of product distributed along a certain length of the tubular bag material. A drive assembly Sheet is located under the support of the forming device and above the packaging machine. The sheet drive assembly couples the tubular bag material to make the band of material pass over the forming device and supply the tubular bag material to the packaging machine located below. Usually, the sheet drive assembly includes a pair of drive belts that drive the tubular bag material at the desired speed. Also rollers can be used. The packaging machine includes at least one pair of rotationally driven jaws, the jaws having a peripheral speed (when coupled with the tubular bag material) that adjusts to the speed of the tubular bag material determined by the assembly blade drive.
    [0017]
    [0018] In particular, with respect to snacks there is a tendency and pressure to supply snacks in small bags. Smaller-sized bags are repackaged and are generally placed in larger bags, although this is not always the case. That is, smaller bags provide individual service to the consumer.
    [0019]
    [0020] The aforementioned packaging machines have two jaws mounted on each tree, two bags being manufactured at each 360 ° rotation of the trees. The sealing surfaces of each jaw are separated from the axis of rotation of the shaft at a distance of about 100 mm.
    [0021]
    [0022] With jaw assemblies such as those described above, this is with the sealing surfaces of the jaws separated from the axis of rotation about 100 mm, there is a disadvantage that they are more suitable and designed to produce larger bags, and therefore they have the additional disadvantage that they are not well adapted to manufacture the smaller bags at high manufacturing speeds. In particular, when the jaws have a velocity profile that varies, the jaws must be accelerated and decelerated before coupling the tubular bag material, and after coupling to the tubular bag material, while in sealing contact with the tubular material of bag, the jaws must move at the same speed as the tubular bag material. This change in speed and the consequent acceleration present a problem with respect to inertial forces.
    [0023] OBJECTIVE
    [0024]
    [0025] The objective of the present invention is to overcome or substantially improve at least one of the above drawbacks.
    [0026]
    [0027] CHARACTERISTICS OF THE INVENTION
    [0028]
    [0029] In this specification a set of packaging machine jaws is disclosed which includes:
    [0030]
    [0031] a pair of drive shafts, the trees being parallel and being transversely separated, each tree having a longitudinal axis and rotating repeatedly 360 ° about its respective axis, the trees rotating in opposite angular directions; Y
    [0032]
    [0033] at least one sealing jaw is attached to each shaft, so that the jaws are arranged in cooperating pairs, and in which each sealing jaw has a sealing surface to engage the tubular bag material moving downwardly in order of forming a transverse seal therein, each sealing surface being separated from its respective axis of rotation by a radius of less than 85 mm.
    [0034]
    [0035] Preferably, each sealing surface is separated from its axis of rotation by a radius of more than 65 mm but less than 85 mm.
    [0036]
    [0037] Preferably, each sealing surface is separated from its respective axis by a radius of less than 80 mm but more than 70 mm.
    [0038]
    [0039] Preferably, each sealing surface is separated from its axis of rotation at a distance of about 76 mm.
    [0040]
    [0041] Preferably, the longitudinal axis is, in general, horizontal.
    [0042]
    [0043] Preferably, the jaws, when coupled with the tubular bag material, move downward.
    [0044]
    [0045] Preferably, the jaw assembly includes a separating bar operatively associated with each jaw, so that the pairs of the separating bars cooperate to separate the bag material before the coupling of the sealing jaws with the tubular bag material.
    [0046]
    [0047] Preferably, the assembly includes a closing bar operatively associated with each jaw, the closing bars in pairs cooperating to close the tubular bag material when the sealing jaws are in sealing contact with the tubular bag material.
    [0048]
    [0049] Preferably, the separator bars and the closing bars are displaced downwardly when in contact with the tubular bag material.
    [0050]
    [0051] BRIEF DESCRIPTION OF THE DRAWINGS
    [0052]
    [0053] Preferred forms of the present invention will now be described by way of example, with reference to the accompanying drawings in which:
    [0054]
    [0055] Figure 1 is a schematic view, in isometric perspective, of the jaw assembly of a packaging machine; Y
    [0056]
    [0057] Figure 2 is a schematic elevational view of one end of the jaw assembly of Figure 1.
    [0058]
    [0059] DESCRIPTION OF THE EMBODIMENTS
    [0060]
    [0061] The attached drawings schematically represent a jaw assembly -10- of a packaging machine.
    [0062]
    [0063] The packaging machine is located below a sheet drive assembly that supplies the jaw assembly -10- with tubular bag material -11- that is transversely sealed and cut transversely by means of the jaw assembly -10- to form bags - 12- of snacks. Tubular material -11- is supplied in a downward direction -13-.
    [0064]
    [0065] The sheet drive assembly includes a sealing bar that forms a longitudinal seal in the tubular material -11- with the jaw assembly -10- forming the transverse seals in each bag -12-.
    [0066] Located above the sheet drive assembly is a forming device that receives the tubular material -11- in the form of a band, the forming device receiving the bag material in a band and forming the tubular material -11- of bag. Located on top of the forming device is a weighing machine that supplies batches of product inside the tubular bag material 11 through a central opening in the forming device.
    [0067]
    [0068] The set of jaws -10- includes a pair of shafts -14- and -15- that are driven in opposite directions of rotation -16- and -17-. Each shaft -14- or -15- is rotatably driven 360 ° around its respective longitudinal axis of rotation -18- or -19-. The axes -18- and -19- are, in general, horizontal.
    [0069]
    [0070] The trees -14- and -15- are generally parallel and are separated transversely and are substantially co-extensive.
    [0071]
    [0072] Attached to each axle -14 - / - 15 - a drive gearwheel -20- is arranged, driving the sprockets -20- the shafts -15- and -16- in opposite directions of rotation -16 - / - 17- .
    [0073]
    [0074] Attached to one of the sprockets -20- a pulley -21- is arranged which is coupled by means of a drive belt -22- which extends around a drive pulley -23-.
    [0075]
    [0076] The pulley -23- is driven by a gearbox -24- which, in turn, is driven by a servomotor -25-.
    [0077]
    [0078] The servomotor -25- is governed in terms of its operation by a controller (computer) -26-. The controller -26- governs the operation of the blade drive assembly described above and that of the weighing machine.
    [0079]
    [0080] Attached to each tree -14 - / - 15 - a pair of sealing jaws -27- or -28- are arranged. Each jaw -27- is operatively associated with one of the respective jaws -28- to couple the tubular bag material -11- to form the transverse seal therein. When coupled with the tubular bag material -11-, said jaws -27- and -28- move downward in the direction -13- at the same speed as the tubular bag material -11-.
    [0081] When the jaws -27 - / - 28- are coupled to the tubular bag material -11-, they move at the same speed as the tubular bag material -11-. However, when they are not coupled with the tubular stock material -11-, the shafts -14- and -15- are driven at angular speeds that change, so that the jaws -27 - / - 28- move between couplings with the tubular bag material -11- as fast as possible, thus allowing a higher production speed of the bags -12-.
    [0082]
    [0083] In this embodiment, each shaft -14 - / - 15 - has a pair of jaws -27 - / - 28-. However, in alternative embodiments there is at least one jaw -27 - / - 28- attached to each respective tree -14 - / - 15.
    [0084]
    [0085] Each jaw -27 - / - 28- has extreme surfaces -29- that are heated and are coupled to the tubular bag material -11- to form transverse seals therein. A blade, which is not shown, is mounted on each jaw -27 - / - 28- that cuts the tubular material -11- next to the transverse seals, so that it forms the bag -12-. In this regard, the surfaces -29- are each organized in sub-surfaces, the sub-surfaces forming a part of the transverse seal on opposite sides of the blade, so that when the bag -12- is sectioned, the -12-shaped bag has an end seal, while the next bag has the end seal at the bottom.
    [0086]
    [0087] Mounted inside each jaw -27 - / - 28- a heating element -30- is provided which heats the jaws -27 - / - 28- such that the surfaces -29- form the transverse seals.
    [0088]
    [0089] Each surface -29- is separated from its respective axis -18 - / - 19- by a radius -31-. That is, each surface -29- is separated from its respective axis by a predetermined distance.
    [0090]
    [0091] Preferably the radius is less than 85 mm but greater than 65 mm.
    [0092]
    [0093] In a preferred alternative form, the radius -31- is less than 80 mm but greater than 70 mm.
    [0094]
    [0095] Very preferably the radius -31- is about 76 mm.
    [0096] By having a radius -31- as described above, the forces of inertia generated by the jaws -27 - / - 28- are greatly reduced. This allows the jaws -27 - / - 28 to accelerate more quickly and then decelerate, in order to increase the production speed of the bags -12-.
    [0097]
    [0098] A separation and closing assembly -32- is operatively associated with each of the sealing jaws -27 - / - 28-.
    [0099]
    [0100] Each set -32- includes a pair of mounting arms -33- which, in turn, support a pair of closing bars -34- and a pair of separating bars -35-.
    [0101]
    [0102] The closing bars -34- are arranged in opposite pairs -34- while the separating bars -35- are arranged in cooperating pairs -35-.
    [0103]
    [0104] When each of the sealing jaws -27 / -28- approaches the tubular bag material -11-, the bars -34- and -35- are coupled to the tubular bag material to separate the tubular bag material and close the tubular bag material to ensure that the product is not located in the seal that is being formed by means of the jaws -27 - / - 28-.
    [0105]
    [0106] In particular, the separating bars -35- circulate down the tubular bag material -11- to move the tubular bag material towards the lower end of the bag -12- that is being formed and, consequently, extract the product that may be located in the seal. The closing bars -34- are coupled to the tubular bag material -11- above the separator bars -35- and close the tubular bag material -11-, to ensure that it does not turn out that the next batch to be supplied enter the area to be sealed.
    [0107]
    [0108] Preferably, each of the separating bars -35- has a protection -45- which is located next to the tubular material -11- to help isolate the surfaces -29- from an involuntary contact with the tubular material -11- of bag.
    [0109]
    [0110] Each of the bars -34 - / - 35- is mounted on the end of an arm -36 - / - 37-, each arm -36 - / - 37- being pivotally mounted on the arms -33- for a angular movement around some axes, in general, parallel to the axes of rotation -18- / 19-. The arms -36- supporting the separating bars -35- are pushed by means of springs -38- to a predetermined position with respect to the trees -14- and -15-.
    [0111] Additionally, each of the bars -34 - / - 35- has an end projection -39 - / - 40-operatively associated with the track of a cam -41 - / - 42- to position the bars -34 - / - 35 -for proper coupling with tubular material -11- bag.
    [0112]
    [0113] During operation of the bars -34 - / - 35- described above, the separator bars -35- are coupled to the tubular bag material -11- and have a greater downward velocity than the tubular bag material -11-, moving from this way down the tubular bag material -11- to "separate" the tubular bag material -11-. The "separation" function simply means that the product supplied inside the tubular bag material 11 has been displaced downwards so that the transverse seal that has formed is free.
    [0114]
    [0115] The closing bars -34- are coupled to the tubular bag material -11- and close the tubular bag material -11- to ensure that the next batch of product does not end in the area of the seal being formed. When the bars -34- are coupled to the tubular bag material, they move downwards.
    权利要求:
    Claims (20)
    [1]
    1. Jaw assembly of a packaging machine that includes:
    a pair of drive shafts, the trees being parallel and being separated transversely, each tree having a longitudinal axis, and rotating 360 ° repeatedly around the respective axis, the trees rotating in opposite angular directions; Y
    at least one sealing jaw attached to each shaft, so that the jaws are arranged in cooperating pairs, and in which each sealing jaw has a sealing surface to engage the tubular bag material that travels downstream to form a transverse seal therein, each sealing surface being separated from the respective axis of rotation by a radius of less than 85 mm.
    [2]
    2. Jaw assembly according to claim 1, wherein each sealing surface is separated from its axis of rotation by a radius greater than 65 mm but less than 85 mm.
    [3]
    3. Jaw assembly according to claim 2, wherein each sealing surface is separated from its axis of rotation by a radius of less than 80 mm but greater than 70 mm.
    [4]
    4. Jaw assembly according to claim 3, wherein each sealing surface is separated from its axis of rotation at a distance of about 76 mm.
    [5]
    5. Jaw assembly according to claim 1, wherein the longitudinal axis is generally horizontal.
    [6]
    6. Jaw assembly according to claim 1, wherein the jaws when coupled to the tubular bag material are displaced downward.
    [7]
    7. Jaw assembly according to claim 1, wherein the jaw assembly includes a separating bar operatively associated with each jaw, so that the cooperative pairs of the separating bars separate the bag material prior to coupling the jaws of sealed with tubular bag material.
    [8]
    8. Jaw assembly according to claim 7, wherein the assembly includes a closing bar operatively associated with each jaw, the closing bars cooperating by couples to close the tubular bag material when the sealing jaws are in sealing contact with the tubular bag material.
    [9]
    9. Jaw assembly according to claim 8, wherein the separating bars and the closing bars move downwards when in contact with the tubular bag material.
    [10]
    10. Jaw assembly according to claim 3, wherein the longitudinal axis is generally horizontal.
    [11]
    11. Jaw assembly according to claim 3, wherein the jaws when coupled with the tubular bag material are displaced downward.
    [12]
    12. Jaw assembly according to claim 3, wherein the jaw assembly includes a spacer bar operatively associated with each jaw, such that the pairs of cooperating spacer bars separate the bag material prior to coupling the jaws of sealed with tubular bag material.
    [13]
    13. Jaw assembly according to claim 12, wherein the assembly includes a closure bar operatively associated with each jaw, the closure bars cooperating in pairs to close the tubular bag material when the sealing jaws are in sealing contact with tubular bag material.
    [14]
    14. A jaw assembly according to claim 13, wherein the separating bars and the closing bars move downwardly when in contact with the tubular bag material.
    [15]
    15. Jaw assembly according to claim 5, wherein the jaws when coupled with the tubular bag material move downwardly,
    [16]
    16. Jaw assembly according to claim 5, wherein the jaw assembly includes a spacer bar operatively associated with each jaw, such that the pairs of cooperating spacer bars separate the bag material prior to coupling the jaws of sealed with tubular bag material.
    [17]
    17. Jaw assembly according to claim 16, wherein the assembly includes a closure bar operatively associated with each jaw, the closure bars cooperating in pairs to close the tubular bag material when the sealing jaws are in sealing contact with tubular bag material.
    [18]
    18. Jaw assembly according to claim 17, wherein the separating bars and the closing bars move downwardly when in contact with the tubular bag material.
    [19]
    19. Jaw assembly according to claim 18, wherein each sealing surface is separated from its axis of rotation a distance of about 76 mm.
    [20]
    20. Jaw assembly according to claim 19, wherein the longitudinal axis is generally horizontal, the jaws, when coupled with the tubular bag material, are moving downward, the jaw assembly includes a separating bar operatively associated with each jaw, such that the pairs of cooperating separating bars separate the bag material prior to coupling the sealing jaws with the tubular bag material, and a closing bar operatively associated with each jaw, cooperating the closing bars in pairs to close the tubular bag material when the closing jaws are in sealing contact with the tubular bag material with the separating bars and the closing bars displaced downward when they are in contact with the tubular material Bag
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    同族专利:
    公开号 | 公开日
    GB201903252D0|2019-04-24|
    MX2019002870A|2019-12-19|
    ES2725469R1|2019-12-10|
    US20190300217A1|2019-10-03|
    DE102019106301A1|2019-09-19|
    ES2725469B2|2020-04-22|
    GB2572072A|2019-09-18|
    AU2019201638A1|2019-10-03|
    JP2019156492A|2019-09-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE4024984A1|1990-07-30|1992-02-06|Focke & Co|METHOD AND DEVICE FOR PACKAGING Bulk Goods|
    JPH0565110A|1991-08-31|1993-03-19|Nippon Seiki Co Ltd|Heat-seal device|
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    EP1319600B1|2001-12-12|2006-08-02|TNA Australia Pty Limited|Rotary sealing and stripping assembly for a packaging machine|
    EP1325868A1|2002-01-08|2003-07-09|Tetra Laval Holdings & Finance SA|Packaging unit for continuously producing sealed packages, containing pourable food products, from a tube of packaging material|
    US7730698B1|2004-12-16|2010-06-08|Montano Louis M|Split crimper for heat sealing packaging material|
    IT1399862B1|2010-04-30|2013-05-09|Ima Flavour S R L Ora Ima Ind S R L|VERTICAL AXIS MACHINE FOR THE PRODUCTION OF FILTER BAGS WITH INFUSION PRODUCTS|
    EP2678244B1|2011-02-24|2016-07-06|Unilever PLC|Infusion packet and its manufacture|
    JP6033498B2|2014-09-03|2016-11-30|大成ラミック株式会社|Filling and packaging method and filling and packaging machine for liquid packages|
    CN105775193B|2016-04-21|2018-01-16|青岛海科佳电子设备制造有限公司|Stereoscopic bag automatic moulding packing machine|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    AU2018900828A|AU2018900828A0|2018-03-13|A packaging machine|
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