Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
  • B23K20/103—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding using a roller
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
  • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
  • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
  • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/01—General aspects dealing with the joint area or with the area to be joined
  • B29C66/05—Particular design of joint configurations
  • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
  • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
  • B29C66/133—Fin-type joints, the parts to be joined being flexible
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
  • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
  • B29C66/43—Joining a relatively small portion of the surface of said articles
  • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
  • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/80—General aspects of machine operations or constructions and parts thereof
  • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
  • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
  • B29C66/8167—Quick change joining tools or surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/80—General aspects of machine operations or constructions and parts thereof
  • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
  • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
  • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
  • B29C66/83411—Roller, cylinder or drum types
  • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/80—General aspects of machine operations or constructions and parts thereof
  • B29C66/84—Specific machine types or machines suitable for specific applications
  • B29C66/849—Packaging machines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/90—Measuring or controlling the joining process
  • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
  • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
  • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/90—Measuring or controlling the joining process
  • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
  • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
  • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
  • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
• • 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
  • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
  • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
  • B65B51/306—Counter-rotating devices
• • 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
  • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
  • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
  • Y10T156/1702—For plural parts or plural areas of single part
  • Y10T156/1712—Indefinite or running length work
  • Y10T156/1741—Progressive continuous bonding press [e.g., roll couples]

Definitions

• the present disclosure refers to support devices for counter-rotating elements.
• the present disclosure has been developed with particular attention to its possible employment for the support of counter-rotating elements included in ultrasound welding systems.
• counter-rotating elements such as, for example, counter-rotating rollers, counter-rotating wheels, counter-rotating disks.
• Known methods for realising the longitudinal sealing line or "fin" of the tubular wrapping blank include advancing the edges of the tape destined to form the above-said fin through one or more pairs of counter-rotating elements that realise the welding of the edges, typically by thermal welding.
• the device supporting the counter-rotating elements has three functions:
• the counter-rotating elements can constitute part of an ultrasound welding device (see, for example, documents IT-B-I 160 245 or US-B-6 574 944) .
• the object of the present invention is to provide such a device.
• figure 1 is a general prospective view of a device of the type described herein
• figure 2 is an extremity view of the device described herein
• figure 3 is a section along the line III-III of figure 1.
• reference 10 indicates a support device in its entirety for two counter-rotating elements 12 and 14 rotatable (in opposite directions) around their respective axes X12 and X14, parallel to each other.
• the counter-rotating elements 12 and 14 are the anvil and ultrasonic welding horn, respectively, of an ultrasound welding system.
• this can be the system (or one of the systems) for ultrasound welding destined to form the so-called longitudinal fin of a wrapper of the type commonly denominated "flow-pack".
• the field of application of the device described herein, however, is not limited to application in this context.
• the counter- rotating elements 12 and 14 have an approximately disk shape and are mounted on respective shafts 120, 140.
• Two gear wheels 16 and 18 are splined onto the shafts 120, 140 in the proximity of the counter-rotating elements 12, 14.
• the gears 16 and 18 are coupled together forming a gear pair so that one of the shafts 120, 140 (for example the shaft 120), being pulled in rotation around its respective axis X12 by a motorisation not explicitly shown, pulls in rotation
• References 22 and 24 indicate two solid support blocks receiving the shaft 120 and the shaft 140 respectively, mounted rotating inside.
• the precise mounting of the shafts inside the support blocks 22 and 24 is actuated through elements (from example bearings) of known type according to known machine construction criteria, which makes their detailed description herein superfluous. This is also valid concerning the transmission of the motion to the shaft 140 and/or the application of the wave front of ultrasonic excitation to the shaft 140 and to the rotating element 14 mounted on its extremity.
• Reference 26 indicates a flat or substantially flat plate connected both to the support block 22 and to the support block 24 (which in the exemplary embodiment illustrated herein are assumed to be parallelepiped prismatic blocks with square or rectangular transverse sections) according to a general bridge-like arrangement.
• plate 26 is fixed to the support blocks 22 and 24 through screws 28. Other fixing means known to one skilled in machine construction may be applied for such purpose.
• cylinders 29 having a centring function are interposed between plate 26 and each of the support blocks 22 and 24. All of this so to insure that the bridge-like connection of plate 26 between the two blocks 22 and 24 is stable and precise, particularly concerning the parallel alignment of the axes X12 and X14 around which the counter-rotating elements 12 and 14 rotate.
• the exemplary embodiment illustrated herein provides for the plate 26 disposed as a bridge-like connection between the support blocks 22 and 24 being unique, preferably with an open structure. Using more than one plate is naturally included within the scope of the present specification.
• the plate or plates 26 (in the following, reference will be made to the presence of only one such plate for simplicity) is realised so to allow flexion in the region extending between the blocks 22 and 24.
• such result is obtained by providing for the intermediate zone between blocks 22 and 24 the plate 26 to have an intermediate portion 260 that is thinner (that is, a so-called zone of lightening) obtained, for example, by forming a grinding relief in the plate, allowing plate 26 to bend with respect to the plane in which it generally lies.
• the bending of plate 26 can allow for a variation of the distance D between the two axes X12 and X14 in the order of 2 mm.
• such quantitative data are for orientative purposes only and should not be interpreted as limiting the scope of the specification.
• plate 26 can be exploited to allow selective distancing of the peripheries of the counter-rotating elements 12 and 14 for the insertion into the interval or gap defined between them of a laminar structure M to be subjected to welding. This could be, for example, the two opposite edges of a tape of sheet material subjected to ultrasound welding for the formation of a tubular "flow-pack" wrapping blank.
• the geometry of the blocks 22 and 24 and that of the plate 26 is such that at rest - that is, in the absence of external solicitations - a gap is present between the peripheries of the counter-rotating elements 12 and 14, for example in the order of 2 mm.
• Such gap can then be annulled by acting on the blocks 22 and 24 (which are connected by plate 26 according to a general elastically re-closable jaw-like configuration) so to bring them together until the gap between the peripheries of the counter-rotating elements 12 and 14 is annulled.
• Such result can be obtained through actuating elements of various natures.
• such result is obtained by connecting the support blocks 22 and 24 through a fluid actuator 32.
• the actuator 32 is arranged on opposite sides with respect to the plane passing through the rotational axes X12 and X14, the actuator
• an expandable element 326 susceptible of being fed with a fluid under pressure through a feeding line including, for example, a proportional valve 328.
• the functioning of the actuator 32 provides for the expansion of chamber 326, contracting axially, when fed with the pressurised fluid and therefore generating an axial force that tends to bring the terminal parts of extremities 322 and 324 (and therefore the blocks 22 and 24) together with a force, the intensity of which can be regulated by acting on the proportional valve 328.
• An actuator of the type described is known, for example, from US-B-6 349 746.
• the feeding pressure of the actuator 32 can initially be brought up to a first threshold value of, for example, 3 atmospheres so to bring the peripheries of the counter-rotating elements 12 and 14 into contact with each other (virtually annulling the gap between such peripheries) .
• the possible further increase of the feeding pressure of the actuator 32 translates into an increase of the force pushing the peripheries of the counter- rotating elements 12 and 14 against each other (typically with the interposition of the material M interposed between them, for example to be subjected to ultrasound welding) .
• the solution described has the advantage of neither requiring the employment of guides or cams to regulate the relative positions of the blocks 22 and 24 and/or the relative moving together/apart of the same, nor the employment of actuator elements including a movable stem in a casing (of the jack type, for clarity) , susceptible of originating friction phenomena not immediately foreseeable and such to modify in an undesirable and unpredictable way the cooperation conditions of the counter-rotating elements 12 and 14, under constant actuating action of the actuator 32.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)
• Machine Tool Units (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Physical Vapour Deposition (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Braking Systems And Boosters (AREA)
• Rotational Drive Of Disk (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Vending Machines For Individual Products (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (14)

Families Citing this family (4)

Citations (3)

Family Cites Families (10)

• 2008
  • 2008-04-18 EP EP08425267A patent/EP2110227B1/en not_active Not-in-force
  • 2008-04-18 DE DE602008003095T patent/DE602008003095D1/de active Active
  • 2008-04-18 ES ES08425267T patent/ES2354498T3/es active Active
  • 2008-04-18 PL PL08425267T patent/PL2110227T3/pl unknown
  • 2008-04-18 AT AT08425267T patent/ATE485155T1/de active
• 2009
  • 2009-02-12 CA CA2721795A patent/CA2721795A1/en not_active Abandoned
  • 2009-02-12 MX MX2010011163A patent/MX2010011163A/es active IP Right Grant
  • 2009-02-12 BR BRPI0911791A patent/BRPI0911791A2/pt not_active IP Right Cessation
  • 2009-02-12 AU AU2009237382A patent/AU2009237382B2/en not_active Ceased
  • 2009-02-12 WO PCT/IB2009/050582 patent/WO2009127976A1/en not_active Ceased
  • 2009-02-12 US US12/937,921 patent/US8499811B2/en not_active Expired - Fee Related
  • 2009-02-12 JP JP2011504576A patent/JP5269979B2/ja not_active Expired - Fee Related
  • 2009-02-12 CN CN2009801132842A patent/CN102006984B/zh not_active Expired - Fee Related
• 2010
  • 2010-12-31 HR HR20100732T patent/HRP20100732T1/hr unknown

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