WO2012152528A1 - Method for operating a transverse-seam-sealing arrangement in a tubular-bag machine, and transverse-seam-sealing arrangement in a tubular-bag machine - Google Patents

Method for operating a transverse-seam-sealing arrangement in a tubular-bag machine, and transverse-seam-sealing arrangement in a tubular-bag machine Download PDF

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Publication number
WO2012152528A1
WO2012152528A1 PCT/EP2012/056773 EP2012056773W WO2012152528A1 WO 2012152528 A1 WO2012152528 A1 WO 2012152528A1 EP 2012056773 W EP2012056773 W EP 2012056773W WO 2012152528 A1 WO2012152528 A1 WO 2012152528A1
Authority
WO
WIPO (PCT)
Prior art keywords
transverse
sealing
seam
transverse sealing
jaws
Prior art date
Application number
PCT/EP2012/056773
Other languages
German (de)
French (fr)
Inventor
Arjan-Van Leijsen
Stephan Klein
Maurice Hendrikx
Juergen Haak
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2012152528A1 publication Critical patent/WO2012152528A1/en

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Classifications

    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8246—Servomechanisms, e.g. servomotors
    • 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
    • B29C66/922—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9221—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
    • B29C66/92211—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power with special measurement means or methods
    • 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
    • B29C66/922—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9231—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the displacement of the joining tools
    • B29C66/92311—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 measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the displacement of the joining tools with special measurement means or methods
    • 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
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/8161—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 said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/872—Starting or stopping procedures
    • 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
    • B29C66/87—Auxiliary operations or devices
    • B29C66/874—Safety measures or devices
    • B29C66/8748—Safety measures or devices involving the use of warnings
    • 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
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B29C66/9674—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data outputs, e.g. special data display means

Definitions

  • the invention relates to a method for operating a cross-seam sealing device in a tubular bag machine and a cross-seam sealing device in a tubular bag machine according to the preambles of the two independent claims.
  • Such a method for operating a cross-seam-sealing device as well as such a cross-seam-sealing device are known from DE 198 03 838 C2.
  • one of the two transverse sealing jaws has a pressure sensor whose signal is fed to the control device of the tubular bag machine as an input signal.
  • the position of the transverse sealing jaws on the position of the drive of the transverse sealing jaws is known, and this is also supplied to the control device as an input signal.
  • the pressure sensor serves to detect in the region of the transverse sealing seam arranged filling material, which leads to a poor quality of the transverse sealing seam during welding.
  • a vertically operating tubular bag machine in which the sealing force of the cross-seam sealing jaws can be changed over the sealing time.
  • a not optimally set sealing force in a cross-seaming device either leads to reduced machine performance, for example, if the sealing force is too low and therefore an extended sealing time is needed, or can lead to poor quality transverse seams (damaged seals or low adhesion).
  • the sealing force may change as a result of wear of the machine, changing circumstances during production (eg: soiling of the sealing jaws), etc., without the operator of the flow wrap machine noticing this.
  • other criteria are important to achieve optimum seal quality at a transverse seal. These include, for example, the parallelism of the two Quernahtsiegelbacken, the generation of an equal sealing pressure of both Quernahtsiegelbacken etc.
  • the invention has the object, a method for operating a cross-seaming device and a cross-seaming device in a tubular bag machine according to the preambles of the two independent claims such that the highest possible quality of the transverse seams while achieving the highest possible performance is achieved ,
  • This object is achieved in a method for operating a cross-seam sealing device in a tubular bag machine or in a cross-seam sealing device having the features of the independent claims.
  • the invention is based on the idea of controlling the activation or the movement of the cross-seam sealing jaws as a function of the sealing pressure detected by a pressure sensor.
  • control device which controls the movement of the cross-seam sealing jaws has an algorithm which either controls the drive of the cross-seam sealing jaws or a force adjustment device for the transverse sealing jaws in such a way that the sealing pressure required to produce optimum transverse sealing seams is always achieved .
  • the invention can either be provided to directly control the drive of the cross-seam sealing jaws as a function of the signal detected by the force sensor in order, for example, to adjust the adjustment path of the
  • Transverse sealing jaws to influence directly.
  • the cross-seam sealing jaws or their drive always run with the same path, and to influence the sealing pressure by activating a force-adjusting device operatively connected to at least one cross-seam-sealing jaw.
  • additional parameters influencing the welding quality such as the geometric parallelism of the transverse sealing jaws or the current of the drive, be detected and fed to the control device as input variables, that limit values are stored in the control device for each detected parameter, and the control device has an algorithm for controlling the movement of the transverse suture jaws or for controlling the force adjustment device as a function of the detected parameters.
  • a display unit in particular a screen.
  • Such a method is particularly suitable for timely signaling to an operator whether certain parameters are approaching, for example, a certain limit value, so that the operator is enabled, by appropriate adjustments to the cross-seam sealing device or the
  • the force adjustment device preferably has a pneumatically, hydraulically, mechanically or electrically acting actuator, which is arranged operatively connected to at least one of the two transverse sealing jaws.
  • the respective structural design of the force adjustment device can be made dependent in particular on the intended performance of the tubular bag machine and thus in particular on the required reaction time for adjusting the sealing force on the cross-seam sealing jaws.
  • At least one of the cross-seam sealing jaws is connected to a compression spring.
  • a compression spring can serve to preset the sealing force.
  • FIG. 1 is a simplified representation of a tubular bag machine according to the invention for producing tubular bag packages
  • FIG. 5 show perspective views of a part of the transverse seam sealing device used in a tubular bag machine according to FIG. 1,
  • FIG. 7 are diagrams for illustrating different ways of operating a transverse seam sealing device according to the invention.
  • FIG. 8 shows the representation of a process parameter as it results during the production of individual tubular bag machines on a tubular bag machine according to FIG. 1.
  • a tubular bag machine 10 for producing tubular bag packages 1 is shown greatly simplified.
  • the tubular bag package 1 produced from a flat packaging material web 2 made of heat-sealable material has an upper transverse seam 3, a lower transverse seam 4 and at least one longitudinal seam 5.
  • Within the tubular bag package 1 is filled 6, z. B. in the form of lumpy foods such as chips, candies, or a liquid such as ketchup, milk or the like packed.
  • the tubular bag machine 10 has a tube forming device 11 which essentially consists of a forming shoulder 12 and a filling and forming tube 13 operatively connected to the forming shoulder 12, through which the filling material 6 is also inserted into the tubular bag packing 1 initially provided only with the lower transverse sealing seam 4 is delivered.
  • a tube forming device 11 By means of the tube-forming device 1 1, the flat packaging material web 2 is formed into a packaging tube 7, wherein the two mutually overlapping longitudinal edges of the packaging material 2 and the packaging tube 7 are welded against each other by means of a longitudinal seam sealing device not shown in FIG.
  • a discharge device 15 for the packaging material hose 7 is arranged, which consists in particular of two vacuum-assisted, intermittently driven discharge belts 16, 17.
  • the packaging material web 2 stored in the form of a supply roll 8
  • further devices such as a buffer device for storing a partial length of the packaging material web 2 to compensate for the intermittent operation of the tubular bag machine 10 is guided in the direction of the tube forming device 11, deducted.
  • the tubular bag machine 10 has a cross-seam sealing device 20.
  • the transverse seal device 20 comprises in particular two, in the direction of the double arrows 21, 22 against each other movable and arranged in a common plane transverse sealing jaws 23, 24, as known from the prior art and therefore not shown or explained in detail, as heatable
  • Transverse sealing jaws 23, 24 are formed and within the cross-seam gelbacken 23, 24 also has a separating device, not shown, in the form of a separating knife for separating individual tubular bag packages 1 of the packaging tube 7. As can be seen in particular with reference to FIGS. 1 and 2 to 4, the two are
  • the two transverse sealing jaws 23, 24 can be moved by means of a particular common drive 30, preferably in the form of a servomotor 31, via a mechanical drive train 32.
  • the drive train 32 can, as can be seen only in FIG. 1, have for at least one of the two transverse sealing jaws 23, 24 a compression spring 33, which is aligned in the direction of movement of the transverse sealing jaws 23, 24.
  • the drive of the drive 30 of the transverse sealing lugs 23, 24 takes place by means of a line 34 via the control device 35 of FIG.
  • the control device 35 preferably has a display unit 36 controlled by it in the form of a screen, via which operating parameters determined during operation of the tubular bag machine 10 can be optically displayed, as will be explained in more detail later.
  • the two transverse sealing jaws 23, 24 are pressed against each other, so that the packaging material tube 7 located between the transverse sealing jaws 23, 24 is welded on its inside under the action of heat and pressure and thereby the transverse sealing seams
  • the transverse-seam-sealing device 20 or the bagging machine 10 for the maintenance of the required or desired sealing force F n is specially arranged.
  • the transverse sealing jaw 23 has at its two opposite end sections in the longitudinal direction thereof in each case a pressure sensor in the form of force transducers 38, 39, via which the actual sealing force F is in the area of the two ends the cross-seam sealing jaw 23 can be determined.
  • the two force transducers 38, 39 are connected to the control device 35, so that the detected signal Fst is fed to the control device 35 as an input signal. Also, the actual position of the two transverse sealing jaws 23, 24 is known by a corresponding position of the drive 30 and the servomotor 31, respectively, and is also supplied to the control device 35 as an input signal.
  • two strain gauges 43, 44 are arranged in the region of two actuating rods 41, 42 which are part of the drive train 32, and which are connected via the drive train 32 to the servo motor 31, which also actual sealing force F is the a cross-seam sealing jaw 23 detected at their respective lateral region.
  • the signal of the strain gauges 43, 44 is also fed to the control device 35 as an input signal.
  • FIG. 4 a further embodiment of the invention is shown in which, in a modification to Fig. 3, the two actuating rods 41a, 42a are coupled via a respective power bolt 45 with a transverse sealing jaw 23.
  • the signals of the two power bolts 45 are supplied to the control device 35 as input signals.
  • FIG. 5 shows an embodiment in which the one cross-seam-sealing jaw 23b has two strain gauges 43, 44 in analogy to the cross-seam-sealing jaw 23 of FIG.
  • the position of the two end regions of the transverse sealing jaw 23b is determined by means of two position sensors 47, 48, so that not only the respective sealing force F is at the two end regions of the transverse sealing jaw 23b, but also the exact position, in particular the parallel alignment of the transverse sealing jaw 23b Transverse sealing jaw 24b can be determined.
  • the signal of the position sensors 47, 48 is supplied to the control device 35 as an input signal. In the other transverse seam sealing jaw of FIG 24b.
  • FIG. 6 For the operation of the cross-seam-sealing device 20 or the tubular-bag machine 10, reference is now made to FIG. 6 in a first embodiment.
  • the sealing force F determined by means of the force transducers 38, 39, the strain gages 43, 44 or the force bolt 45 is the control device 35, as well as the position P is the cross-seam sealing jaws 23, 24 of the control device 35 supplied as an input signal.
  • the signal of the position sensors 47, 48 and of the sensor element 49 can be supplied to the control device 35 as an input signal.
  • an algorithm is present, the basis of the detected parameter, and in regard to the optimal sealing force F so then, n the actuator 30 and the servo motor 31 drives in such a way that its movement so generates the required sealing force F n.
  • FIG. 7 shows an alternative embodiment of the invention in which a force adjustment device 50 is arranged in the drive train 32 which connects the drive 30 to the transverse sealing jaws 23, 24.
  • the force adjusting device 50 has pneumatic, hydraulic, electrical or other means in the form of at least one actuator, which are adapted to substantially always the same movement of the drive 30 and servomotor 31, the sealing force F is the cross-seaming jaws 23, 24 to influence.
  • the servo motor 31 is thus not driven to generate the sealing force Fsoii, so that it produces, for example, a smaller path for producing a lower sealing force F, but instead the force adjusting device 50, which has adjustable spring means or otherwise, for example. to reduce or increase the sealing force F in the desired manner, so that it has the desired sealing force F so n.
  • FIG. 8 shows an image detail as can be seen on the display unit 36 in the form of a screen.
  • a setpoint value 52, two upper threshold values 53, 54 and two lower threshold values 55, 56 can be recognized with respect to one parameter, for example the detected parallelism of the two cross-seam sealing jaws 23, 24.
  • telpackung 1 symbolized by a point 58, the detected parallelism of the cross-seam sealing jaws 23, 24, which is detected for example by means of the position sensors 47, 48.
  • the detected value of the parallelism has no influence on the setting of the sealing force F of the transverse sealing jaws 23, 24
  • a corresponding warning is sent to an operator, e.g. B. in optical or acoustic form, issued. From this the operator concludes that in this area, although the parallelism of the transverse sealing jaws 23, 24 is still sufficient for a sufficient quality of the transverse sealing seams 3, 4, however, a check or correction makes sense.
  • this value range can lead to the sealing force F being automatically increased or decreased by the control device 35, for example to ensure the quality of the seal. If, in contrast, the parallelism of the cross-seam sealing jaws 23, 24 exceeds the upper threshold value 54, this leads, for example, to a stop in the production of the tubular-bag machine 10.
  • the transverse seam sealing device 20 or the tubular pouch machine 10 described so far can be modified or modified in many different ways without deviating from the idea of the invention.
  • This consists in one Selective control of the drive 30 and the servomotor 31 of the cross-seam sealing device 20, alternatively in a targeted control of the force adjustment device 50 to ensure a specific sealing force F SO M of the transverse sealing jaws 23, 24, where a variety of parameters for detecting the actual state serve.
  • F SO M sealing force adjustment device 50

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Abstract

The invention relates to a method for operating a transverse-seam-sealing arrangement (20) in a tubular-bag machine (10), having two transverse-seam-sealing jaws (23; 23b, 24; 24b), which can be moved in relation to one another via a drive (30), having a servomotor (31) in order for a flexible packaging-material tube (7) arranged between the transverse-seam-sealing jaws (23; 23b, 24; 24b) to be welded by the action of, in particular, heat and pressure in the region of transverse-sealing seams (3, 4), wherein at least one of the two transverse-seam sealing jaws (23; 23b, 24; 24b) has, at least indirectly, a pressure sensor (38, 39; 43, 44; 45) for measuring the sealing pressure (Factual) of the relevant transverse-seam-sealing jaws (23; 23b, 24; 24b) wherein the position (Pactual) of the transverse-seam-sealing jaws (23; 23b, 24; 24b) is sensed, and wherein the signal for the sealing pressure (Factual) and the position (Pactual) of the transverse-seam-sealing jaws (23; 23b, 24; 24b) are fed to a control arrangement (35). According to the invention, it is provided that the control arrangement (35) regulates the movement of the transverse-seam-sealing jaws (23; 23b, 24; 24b), and thus the sealing force (F) thereof, at least in dependence on the sensed sealing pressure (Factual) and the position (Pactual) of the transverse-seam-sealing jaws (23; 23b, 24; 24b).

Description

Beschreibung Titel  Description title
Verfahren zum Betreiben einer Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine und Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine  Method for operating a cross-seam sealing device in a tubular bag machine and cross-seam sealing device in a tubular bag machine
Stand der Technik State of the art
Die Erfindung betrifft ein Verfahren zum Betreiben einer Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine sowie eine Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine nach den Oberbegriffen der beiden unabhängigen Ansprüche. The invention relates to a method for operating a cross-seam sealing device in a tubular bag machine and a cross-seam sealing device in a tubular bag machine according to the preambles of the two independent claims.
Ein derartiges Verfahren zum Betreiben einer Quernahtsiegeleinrichtung sowie eine derartige Quernahtsiegeleinrichtung sind aus der DE 198 03 838 C2 bekannt. Bei der bekannten Quernahtsiegeleinrichtung weist eine der beiden Quernahtsiegelbacken einen Drucksensor auf, dessen Signal der Steuereinrichtung der Schlauchbeutelmaschine als Eingangssignal zugeführt wird. Darüber hinaus ist die Stellung der Quernahtsiegelbacken über die Position des Antriebs der Quernahtsiegelbacken bekannt, und dieses wird ebenfalls der Steuereinrichtung als Eingangssignal zugeführt. Der Drucksensor dient dazu, im Bereich der Quersiegelnaht angeordnetes Füllgut, welches zu einer schlechten Qualität der Quersiegelnaht beim Verschweißen führt, zu erkennen. Es wird sich dabei die Erkenntnis zunutze gemacht, dass bei einem im Bereich der Quersiegelnaht befindlichen Füllgut der von dem Drucksensor erfasste Siegeldruck erhöht ist, wobei der erhöhte Druck im Zusammenhang mit der erfassten Position bzw. Stellung der Quernahtsiegelbacken zur Plausibilitätsprüfung auf im Bereich der Quersiegelnaht befindliches Füllgut herangezogen wird. Such a method for operating a cross-seam-sealing device as well as such a cross-seam-sealing device are known from DE 198 03 838 C2. In the known transverse sealing device, one of the two transverse sealing jaws has a pressure sensor whose signal is fed to the control device of the tubular bag machine as an input signal. In addition, the position of the transverse sealing jaws on the position of the drive of the transverse sealing jaws is known, and this is also supplied to the control device as an input signal. The pressure sensor serves to detect in the region of the transverse sealing seam arranged filling material, which leads to a poor quality of the transverse sealing seam during welding. In this case, it is made use of the knowledge that the sealing pressure detected by the pressure sensor is increased in the case of a filling material located in the region of the transverse sealing seam, the increased pressure in connection with the detected position or position of the transverse sealing sealing jaws being in the region of the transverse sealing seam for plausibility checking Contents is used.
Aus der DE 10 2004 049 376 A1 ist darüber hinaus eine vertikal arbeitende Schlauchbeutelmaschine bekannt, bei der die Siegelkraft der Quernahtsiegelbacken über der Siegelzeit veränderbar ist. Grundsätzlich ist es bekannt, dass eine nicht optimal eingestellte Siegelkraft bei einer Quernahtsiegeleinrichtung entweder zu einer reduzierten Maschinenleistung führt, wenn beispielsweise die Siegelkraft zu gering gewählt ist und daher eine verlängerte Siegelzeit benötigt wird, oder aber zu qualitativ schlechten Quernähten führen kann (beschädigte Siegelnähte oder zu geringe Haftkraft). Darüber hinaus ist es problematisch, dass über die Lebensdauer einer From DE 10 2004 049 376 A1, moreover, a vertically operating tubular bag machine is known, in which the sealing force of the cross-seam sealing jaws can be changed over the sealing time. Basically, it is known that a not optimally set sealing force in a cross-seaming device either leads to reduced machine performance, for example, if the sealing force is too low and therefore an extended sealing time is needed, or can lead to poor quality transverse seams (damaged seals or low adhesion). In addition, it is problematic that over the life of a
Schlauchbeutelmaschine sich die Siegelkraft infolge des Verschleißes der Maschine, sich während der Produktion ändernder Umstände (z. B: einer Verschmutzung der Siegelbacken) usw. sich ändern kann, ohne dass dies vom Be- diener der Schlauchbeutelmaschine bemerkt wird. Darüber hinaus sind weitere Kriterien wichtig, um eine optimale Siegelqualität an einer Quersiegelnaht zu erzielen. Zu diesen gehören beispielsweise die Parallelität der beiden Quernahtsiegelbacken, die Erzeugung eines gleich großen Siegeldruckes von beiden Quernahtsiegelbacken usw. Flow wrap machine, the sealing force may change as a result of wear of the machine, changing circumstances during production (eg: soiling of the sealing jaws), etc., without the operator of the flow wrap machine noticing this. In addition, other criteria are important to achieve optimum seal quality at a transverse seal. These include, for example, the parallelism of the two Quernahtsiegelbacken, the generation of an equal sealing pressure of both Quernahtsiegelbacken etc.
Offenbarung der Erfindung Disclosure of the invention
Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zum Betreiben einer Quernahtsiegeleinrichtung sowie eine Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine nach den Oberbegriffen der beiden unabhängigen Ansprüche derart weiterzubilden, dass eine möglichst hohe Qualität der Quernähte bei gleichzeitig möglichst hoher Leistung erzielbar ist. Diese Aufgabe wird bei einem Verfahren zum Betreiben einer Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine bzw. bei einer Quernahtsiegeleinrichtung mit den Merkmalen der unabhängigen Ansprüche gelöst. Der Erfindung liegt dabei die Idee zugrunde, die Ansteuerung bzw. die Bewegung der Quernahtsiegelbacken in Abhängigkeit von dem von einem Drucksensor erfassten Siegeldruck zu regeln. Mit anderen Worten gesagt bedeutet dies, dass die Steuereinrichtung, die die Bewegung der Quernahtsiegelbacken steuert, einen Algorithmus aufweist, der entweder den Antrieb der Quernahtsiegelbacken, oder aber eine Kraftverstellungseinrichtung für die Quernahtsiegelbacken derart ansteuert, dass stets der zur Erzeugung optimaler Quersiegelnähte erforderliche Siegeldruck erreicht wird. Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens zum Betreiben einer Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine sowie einer Quernahtsiegeleinrichtung in einer Schlauchbeutelmaschine sind in den jeweiligen Unteransprüchen angegeben. In den Rahmen der Erfindung fallen sämtliche Kombinationen aus zumindest zwei von in den Ansprüchen, der Beschreibung und/oder den Figuren offenbarten Merkmalen. Based on the illustrated prior art, the invention has the object, a method for operating a cross-seaming device and a cross-seaming device in a tubular bag machine according to the preambles of the two independent claims such that the highest possible quality of the transverse seams while achieving the highest possible performance is achieved , This object is achieved in a method for operating a cross-seam sealing device in a tubular bag machine or in a cross-seam sealing device having the features of the independent claims. The invention is based on the idea of controlling the activation or the movement of the cross-seam sealing jaws as a function of the sealing pressure detected by a pressure sensor. In other words, this means that the control device which controls the movement of the cross-seam sealing jaws has an algorithm which either controls the drive of the cross-seam sealing jaws or a force adjustment device for the transverse sealing jaws in such a way that the sealing pressure required to produce optimum transverse sealing seams is always achieved , Advantageous developments of the method according to the invention for operating a cross-seam sealing device in a tubular bag machine and a cross-seam sealing device in a tubular bag machine are specified in the respective subclaims. All combinations of at least two of the features disclosed in the claims, the description and / or the figures fall within the scope of the invention.
Wie bereits erwähnt, kann es erfindungsgemäß entweder vorgesehen sein, den Antrieb der Quernahtsiegelbacken in Abhängigkeit des von dem Kraftsensor er- fassten Signals direkt anzusteuern, um beispielsweise den Verstellweg derAs already mentioned, according to the invention it can either be provided to directly control the drive of the cross-seam sealing jaws as a function of the signal detected by the force sensor in order, for example, to adjust the adjustment path of the
Quernahtsiegelbacken unmittelbar zu beeinflussen. Alternativ ist es jedoch auch denkbar, die Quernahtsiegelbacken bzw. deren Antrieb stets mit demselben Weg ausführen zu lassen, und den Siegeldruck durch eine Ansteuerung einer mit wenigstens einer Quernahtsiegelbacke wirkverbundenen Kraftverstellungseinrich- tung zu beeinflussen. Transverse sealing jaws to influence directly. Alternatively, however, it is also conceivable to have the cross-seam sealing jaws or their drive always run with the same path, and to influence the sealing pressure by activating a force-adjusting device operatively connected to at least one cross-seam-sealing jaw.
Besonders bevorzugt ist es, dass zusätzliche, die Schweißqualität beeinflussende Parameter, wie beispielsweise die geometrische Parallelität der Quernahtsiegelbacken oder der Strom des Antriebs erfasst und der Steuereinrichtung als Eingangsgrößen zugeführt werden, dass in der Steuereinrichtung für jeden er- fassten Parameter Grenzwerte abgespeichert sind, und dass die Steuereinrichtung einen Algorithmus zur Regelung der Bewegung der Quernahtsigelbacken bzw. zur Ansteuerung der Kraftverstellungseinrichtung in Abhängigkeit der er- fassten Parameter aufweist. Ein derartiges Verfahren ermöglicht eine umfassen- de Einbeziehung aller, die Qualität der Quersiegelnähte beeinflussender Parameter und ist daher besonders geeignet, über die gesamte Produktionsdauer stets gleich gute Quersiegelnähte zu erzielen. It is particularly preferred that additional parameters influencing the welding quality, such as the geometric parallelism of the transverse sealing jaws or the current of the drive, be detected and fed to the control device as input variables, that limit values are stored in the control device for each detected parameter, and the control device has an algorithm for controlling the movement of the transverse suture jaws or for controlling the force adjustment device as a function of the detected parameters. Such a method makes it possible to comprehensively incorporate all the parameters influencing the quality of the transverse sealing seams and is therefore particularly suitable for achieving equally good transverse sealing seams over the entire production period.
Weiterhin kann es vorgesehen sein, dass die Parameter für jeden Schweißvor- gang erfasst und gegebenenfalls mit ihren Grenzwerten optisch in zeitlicher Entwicklung auf einer Anzeigeeinheit, insbesondere einem Bildschirm, dargestellt werden. Ein derartiges Verfahren ist besonders dazu geeignet, einem Bediener rechtzeitig zu signalisieren, ob bestimmte Parameter sich beispielsweise einem bestimmten Grenzwert annähern, so dass es dem Bediener ermöglicht wird, durch entsprechende Einstellungen an der Quernahtsiegeleinrichtung bzw. derFurthermore, provision may be made for the parameters to be recorded for each welding operation and, if appropriate with their limit values, to be displayed visually in time development on a display unit, in particular a screen. Such a method is particularly suitable for timely signaling to an operator whether certain parameters are approaching, for example, a certain limit value, so that the operator is enabled, by appropriate adjustments to the cross-seam sealing device or the
Schlauchbeutelmaschine dem entgegen zu wirken. Die Kraftverstellungseinrichtung weist bevorzugt einen pneumatisch, hydraulisch, mechanisch oder elektrisch wirkenden Aktuator auf, der mit wenigstens einer der beiden Quernahtsiegelbacken wirkverbunden angeordnet ist. Die jeweilige konstruktive Ausführung der Kraftverstellungseinrichtung kann dabei insbesondere von der vorgesehenen Leistung der Schlauchbeutelmaschine und somit insbesondere von der benötigten Reaktionszeit zur Verstellung der Siegelkraft an den Quernahtsiegelbacken abhängig gemacht werden. Flow wrap machine counteract this. The force adjustment device preferably has a pneumatically, hydraulically, mechanically or electrically acting actuator, which is arranged operatively connected to at least one of the two transverse sealing jaws. The respective structural design of the force adjustment device can be made dependent in particular on the intended performance of the tubular bag machine and thus in particular on the required reaction time for adjusting the sealing force on the cross-seam sealing jaws.
Optional kann es vorgesehen sein, dass wenigstens eine der Quernahtsiegelbacken mit einer Druckfeder verbunden ist. Eine derartige Druckfeder kann dabei zu einer Voreinstellung der Siegelkraft dienen. Optionally, it can be provided that at least one of the cross-seam sealing jaws is connected to a compression spring. Such a compression spring can serve to preset the sealing force.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.
Diese zeigt in: This shows in:
Fig. 1 eine vereinfachte Darstellung einer erfindungsgemäßen Schlauchbeutelmaschine zum Herstellen von Schlauchbeutelpackungen, 1 is a simplified representation of a tubular bag machine according to the invention for producing tubular bag packages,
Fig. 2 Fig. 2
bis 5 jeweils perspektivische Ansichten auf einen Teil der Quernahtsiegeleinrichtung, wie sie bei einer Schlauchbeutelmaschine gemäß der Fig. 1 verwendet wird, 5 show perspective views of a part of the transverse seam sealing device used in a tubular bag machine according to FIG. 1,
Fig. 6 Fig. 6
und 7 Diagramme zur Darstellung unterschiedlicher Funktionsweisen zum Betreiben einer erfindungsgemäßen Quernahtsiegeleinrichtung und and FIG. 7 are diagrams for illustrating different ways of operating a transverse seam sealing device according to the invention and FIG
Fig. 8 die Darstellung eines Prozessparameters, wie er sich während der Produktion einzelner Schlauchbeutelmaschinen auf einer Schlauchbeutelmaschine gemäß der Fig. 1 ergibt. 8 shows the representation of a process parameter as it results during the production of individual tubular bag machines on a tubular bag machine according to FIG. 1.
Gleiche Bauteile bzw. Bauteile mit gleicher Funktion sind in den Figuren mit den gleichen Bezugsziffern versehen. In der Fig. 1 ist eine Schlauchbeutelmaschine 10 zum Herstellen von Schlauchbeutelpackungen 1 stark vereinfacht dargestellt. Die aus einer ebenen Packstoffbahn 2 aus heißsiegelfähigem Material hergestellte Schlauchbeutelpackung 1 weist dabei eine obere Quersiegelnaht 3, eine untere Quersiegelnaht 4 sowie wenigstens eine Längssiegelnaht 5 auf. Innerhalb der Schlauchbeutelpackung 1 ist Füllgut 6, z. B. in Form von stückigen Lebensmitteln wie Chips, Bonbons, oder aber eine Flüssigkeit, wie beispielsweise Ketchup, Milch oder ähnliches verpackt. The same components or components with the same function are provided in the figures with the same reference numerals. In Fig. 1, a tubular bag machine 10 for producing tubular bag packages 1 is shown greatly simplified. The tubular bag package 1 produced from a flat packaging material web 2 made of heat-sealable material has an upper transverse seam 3, a lower transverse seam 4 and at least one longitudinal seam 5. Within the tubular bag package 1 is filled 6, z. B. in the form of lumpy foods such as chips, candies, or a liquid such as ketchup, milk or the like packed.
Die Schlauchbeutelmaschine 10 weist eine Schlauchformeinrichtung 11 auf, die im Wesentlichen aus einer Formschulter 12 und einem mit der Formschulter 12 in Wirkverbindung angeordneten Füll- und Formrohr 13 besteht, durch das auch das Füllgut 6 in die zunächst lediglich mit der unteren Quersiegelnaht 4 versehene Schlauchbeutelpackung 1 abgegeben wird. Mittels der Schlauchformeinrichtung 1 1 wird die ebene Packstoffbahn 2 zu einem Packstoffschlauch 7 geformt, wobei die beiden einander überdeckenden Längskanten der Packstoffbahn 2 bzw. des Packstoffschlauchs 7 mittels einer in der Fig. 1 nicht erkennbaren Längsnahtsiegeleinrichtung zur Erzeugung der wenigstens einen Längssiegelnaht 5 gegeneinander verschweißt werden. An gegenüberliegenden Seiten des Füll- und Formrohrs 13 ist eine Abzugseinrichtung 15 für den Packstoffschlauch 7 angeordnet, die insbesondere aus zwei vakuumunterstützten, intermittierend angetriebenen Abzugsbändern 16, 17 besteht. Mittels der Abzugsbänder 16, 17 wird die in Form einer Vorratsrolle 8 bevorratete Packstoffbahn 2, die mittels einer Reihe von Umlenkrollen 18 sowie ge- gebenenfalls weiterer Einrichtungen, wie beispielsweise einer Puffereinrichtung zur Speicherung einer Teillänge der Packstoffbahn 2 zum Ausgleich des intermittierenden Betriebs der Schlauchbeutelmaschine 10 in Richtung der Schlauchformeinrichtung 11 geführt wird, abgezogen. Zur Ausbildung der oberen Quersiegelnaht 3 und der unteren Quersiegelnaht 4 weist die Schlauchbeutelmaschine 10 eine Quernahtsiegeleinrichtung 20 auf. Die Quernahtsiegeleinrichtung 20 umfasst insbesondere zwei, in Richtung der Doppelpfeile 21 , 22 gegeneinander bewegbare und in einer gemeinsamen Ebene angeordnete Quernahtsiegelbacken 23, 24, die, wie an sich aus dem Stand der Technik bekannt und daher nicht näher dargestellt bzw. erläutert, als beheizbareThe tubular bag machine 10 has a tube forming device 11 which essentially consists of a forming shoulder 12 and a filling and forming tube 13 operatively connected to the forming shoulder 12, through which the filling material 6 is also inserted into the tubular bag packing 1 initially provided only with the lower transverse sealing seam 4 is delivered. By means of the tube-forming device 1 1, the flat packaging material web 2 is formed into a packaging tube 7, wherein the two mutually overlapping longitudinal edges of the packaging material 2 and the packaging tube 7 are welded against each other by means of a longitudinal seam sealing device not shown in FIG. 1 for producing the at least one longitudinal sealing seam 5 , On opposite sides of the filling and forming tube 13, a discharge device 15 for the packaging material hose 7 is arranged, which consists in particular of two vacuum-assisted, intermittently driven discharge belts 16, 17. By means of the withdrawal belts 16, 17, the packaging material web 2 stored in the form of a supply roll 8, by means of a series of deflection rollers 18 and, if appropriate, further devices, such as a buffer device for storing a partial length of the packaging material web 2 to compensate for the intermittent operation of the tubular bag machine 10 is guided in the direction of the tube forming device 11, deducted. To form the upper transverse seam 3 and the lower transverse seam 4, the tubular bag machine 10 has a cross-seam sealing device 20. The transverse seal device 20 comprises in particular two, in the direction of the double arrows 21, 22 against each other movable and arranged in a common plane transverse sealing jaws 23, 24, as known from the prior art and therefore not shown or explained in detail, as heatable
Quernahtsiegelbacken 23, 24 ausgebildet sind und innerhalb der Quernahtsie- gelbacken 23, 24 eine ebenfalls nicht dargestellte Trenneinrichtung in Form eines Trennmessers zum Abtrennen einzelner Schlauchbeutelpackungen 1 von dem Packstoffschlauch 7 aufweist. Wie insbesondere anhand der Fig. 1 sowie 2 bis 4 erkennbar ist, sind die beidenTransverse sealing jaws 23, 24 are formed and within the cross-seam gelbacken 23, 24 also has a separating device, not shown, in the form of a separating knife for separating individual tubular bag packages 1 of the packaging tube 7. As can be seen in particular with reference to FIGS. 1 and 2 to 4, the two are
Quernahtsiegelbacken 23, 24 beispielhaft in einem, zwei Führungsstangen 26, 27 aufweisenden Gestell 28 zur Realisierung der Beweglichkeit in Richtung der Doppelpfeile 21 , 22 zumindest mittelbar geführt. Die beiden Quernahtsiegelbacken 23, 24 sind mittels eines insbesondere gemeinsamen Antriebs 30, vor- zugsweise in Form eines Servomotors 31 , über einen mechanischen Antriebsstrang 32 bewegbar. Der Antriebsstrang 32 kann, wie lediglich in der Fig. 1 erkennbar ist, für zumindest eine der beiden Quernahtsiegelbacken 23, 24 eine Druckfeder 33 aufweisen, die in Bewegungsrichtung der Quernahtsiegelbacken 23, 24 ausgerichtet ist. Die Ansteuerung des Antriebs 30 der Quernahtsiegelba- cken 23, 24 erfolgt mittels einer Leitung 34 über die Steuereinrichtung 35 derQuernahtsiegelbacken 23, 24, for example, in a, two guide rods 26, 27 having frame 28 for realizing the mobility in the direction of the double arrows 21, 22 at least indirectly out. The two transverse sealing jaws 23, 24 can be moved by means of a particular common drive 30, preferably in the form of a servomotor 31, via a mechanical drive train 32. The drive train 32 can, as can be seen only in FIG. 1, have for at least one of the two transverse sealing jaws 23, 24 a compression spring 33, which is aligned in the direction of movement of the transverse sealing jaws 23, 24. The drive of the drive 30 of the transverse sealing lugs 23, 24 takes place by means of a line 34 via the control device 35 of FIG
Schlauchbeutelmaschine 1 bzw. der Quernahtsiegeleinrichtung 20. Die Steuereinrichtung 35 weist vorzugsweise eine von ihr angesteuerte Anzeigeeinheit 36 in Form eines Bildschirms auf, über den während des Betriebs der Schlauchbeutelmaschine 10 ermittelte Betriebsparameter optisch dargestellt werden können, wie dies später noch näher erläutert wird. The control device 35 preferably has a display unit 36 controlled by it in the form of a screen, via which operating parameters determined during operation of the tubular bag machine 10 can be optically displayed, as will be explained in more detail later.
Zum Erzeugen der Quersiegelnähte 3 und 4 werden die beiden Quernahtsiegelbacken 23, 24 gegeneinander gedrückt, so dass der zwischen den Quernahtsiegelbacken 23, 24 befindliche Packstoffschlauch 7 an seiner Innenseite unter Einwirkung von Wärme und Druck verschweißt und dadurch die QuersiegelnähteTo produce the transverse sealing seams 3 and 4, the two transverse sealing jaws 23, 24 are pressed against each other, so that the packaging material tube 7 located between the transverse sealing jaws 23, 24 is welded on its inside under the action of heat and pressure and thereby the transverse sealing seams
3, 4 ausbildet. Wesentlich für eine bestimmte Qualität der Quersiegelnähte 3, 4 ist dabei die Erzielung einer bestimmten Siegelkraft Fson, die während der Siegelzeit erreicht werden muss, um die gewünschte Siegelqualität zu erzielen. Erfindungsgemäß ist es vorgesehen, dass die Quernahtsiegeleinrichtung 20 bzw. die Schlauchbeutelmaschine 10 zur Einhaltung der erforderlichen bzw. gewünschten Siegelkraft Fson besonders eingerichtet ist. Hierzu wird zunächst beispielhaft auf die Fig. 2 verwiesen. Hierbei erkennt man, dass die eine Quernahtsiegelbacke 23 an ihren beiden gegenüberliegenden Endabschnitten in deren Längsrichtung jeweils einen Drucksensor in Form von Kraftaufnehmer 38, 39 aufweist, über den die tatsächliche Siegelkraft Fist im Bereich der beiden Enden der Quernahtsiegelbacke 23 ermittelt werden kann. Die beiden Kraftaufnehmer 38, 39 sind mit der Steuereinrichtung 35 verbunden, so dass das erfasste Signal Fjst der Steuereinrichtung 35 als Eingangssignal zugeführt wird. Ebenfalls ist die tatsächliche Position der beiden Quernahtsiegelbacken 23, 24 durch eine ent- sprechende Position des Antriebs 30 bzw. des Servomotors 31 bekannt, und wird der Steuereinrichtung 35 ebenfalls als Eingangssignal zugeführt. 3, 4 trains. Essential for a certain quality of the transverse sealing seams 3, 4 is the achievement of a certain sealing force F so n, which must be achieved during the sealing time in order to achieve the desired seal quality. According to the invention, it is provided that the transverse-seam-sealing device 20 or the bagging machine 10 for the maintenance of the required or desired sealing force F n is specially arranged. For this purpose, reference is first made by way of example to FIG. 2. It can be seen here that the transverse sealing jaw 23 has at its two opposite end sections in the longitudinal direction thereof in each case a pressure sensor in the form of force transducers 38, 39, via which the actual sealing force F is in the area of the two ends the cross-seam sealing jaw 23 can be determined. The two force transducers 38, 39 are connected to the control device 35, so that the detected signal Fst is fed to the control device 35 as an input signal. Also, the actual position of the two transverse sealing jaws 23, 24 is known by a corresponding position of the drive 30 and the servomotor 31, respectively, and is also supplied to the control device 35 as an input signal.
Bei dem in der Fig. 3 dargestellten Ausführungsbeispiel der Erfindung sind im Bereich zweier Betätigungsstangen 41 , 42, die Bestandteil des Antriebsstrangs 32 sind, und die über den Antriebsstrang 32 mit dem Servomotor 31 verbunden sind, zwei Dehnmessstreifen 43, 44 angeordnet, die ebenfalls die tatsächliche Siegelkraft Fist der einen Quernahtsiegelbacke 23 an deren jeweiligen seitlichen Bereich erfasst. In Analogie zu den Kraftaufnehmern 38, 39 wird auch das Signal der Dehnmessstreifen 43, 44 der Steuereinrichtung 35 als Eingangssignal zuge- führt. In the embodiment of the invention shown in FIG. 3, two strain gauges 43, 44 are arranged in the region of two actuating rods 41, 42 which are part of the drive train 32, and which are connected via the drive train 32 to the servo motor 31, which also actual sealing force F is the a cross-seam sealing jaw 23 detected at their respective lateral region. Analogously to the force transducers 38, 39, the signal of the strain gauges 43, 44 is also fed to the control device 35 as an input signal.
In der Fig. 4 ist eine weitere Ausgestaltung der Erfindung dargestellt, bei der, in Abänderung zur Fig. 3 die beiden Betätigungsstangen 41a, 42a über je einen Kraftbolzen 45 mit der einen Quernahtsiegelbacke 23 gekoppelt sind. Auch die Signale der beiden Kraftbolzen 45 werden der Steuereinrichtung 35 als Eingangssignale zugeführt. 4, a further embodiment of the invention is shown in which, in a modification to Fig. 3, the two actuating rods 41a, 42a are coupled via a respective power bolt 45 with a transverse sealing jaw 23. The signals of the two power bolts 45 are supplied to the control device 35 as input signals.
In der Fig. 5 ist eine Ausführungsform dargestellt, bei der die eine Quernahtsiegelbacke 23b in Analogie zur Quernahtsiegelbacke 23 der Fig. 3 zwei Dehn- messstreifen 43, 44 aufweist. Darüber hinaus wird die Position der beiden Endbereiche der Quernahtsiegelbacke 23b mittels zweier Positionssensoren 47, 48 ermittelt, so dass nicht nur die jeweilige Siegelkraft Fist an den beiden Endbereichen der Quernahtsiegelbacke 23b, sondern auch die exakte Position, insbesondere die parallele Ausrichtung der Quernahtsiegelbacke 23b zur Quernahtsiegel- backe 24b ermittelt werden kann. Auch das Signal der Positionssensoren 47, 48 wird der Steuereinrichtung 35 als Eingangssignal zugeführt. Bei der anderen Quernahtsiegelbacke 24b der Fig. 5 weist diese auf ihrer Oberseite zusätzlich ein Sensorelement 49 zur Erfassung der Durchbiegung der Quernahtsiegelbacke 24b in deren Längsrichtung, sowie zwei Kraftaufnehmer 38b, 39b auf, die die Siegelkraft Fist an den beiden Endbereichen der Quernahtsiegelbacke 24b erfassen. Zusätzlich erkennt man, dass auch der von dem Servomotor 31 aufgenom- mene Motorstrom list erfasst und der Steuereinrichtung 35 das Eingangssignal zugeführt wird. FIG. 5 shows an embodiment in which the one cross-seam-sealing jaw 23b has two strain gauges 43, 44 in analogy to the cross-seam-sealing jaw 23 of FIG. In addition, the position of the two end regions of the transverse sealing jaw 23b is determined by means of two position sensors 47, 48, so that not only the respective sealing force F is at the two end regions of the transverse sealing jaw 23b, but also the exact position, in particular the parallel alignment of the transverse sealing jaw 23b Transverse sealing jaw 24b can be determined. Also, the signal of the position sensors 47, 48 is supplied to the control device 35 as an input signal. In the other transverse seam sealing jaw of FIG 24b. 5, this on its upper side an additional sensor element 49 for detecting the deflection of the transverse seam sealing jaw 24b in the longitudinal direction thereof, and two load cells 38b, 39b, which is the sealing force F 24b gather at the two end regions of the transverse seam sealing jaw , In addition, it can be seen that the voltage received by the servomotor 31 also mene motor current l is detected and the controller 35, the input signal is supplied.
Zur Funktionsweise der Quernahtsiegeleinrichtung 20 bzw. der Schlauchbeutelmaschine 10 wird nunmehr bei einer ersten Ausführungsform auf die Fig. 6 verwiesen. Darin erkennt man, dass die mittels der Kraftaufnehmer 38, 39, der Dehnmessstreifen 43, 44 oder des Kraftbolzens 45 ermittelte Siegelkraft Fist der Steuereinrichtung 35, ebenso wie die Position Pist der Quernahtsiegelbacken 23, 24 der Steuereinrichtung 35 als Eingangssignal zugeführt werden. Zusätzlich kann entsprechend der Fig. 5 das Signal der Positionssensoren 47, 48 sowie des Sensorelements 49 der Steuereinrichtung 35 als Eingangssignal zugeführt werden. In der Steuereinrichtung 35 ist ein Algorithmus vorhanden, der aufgrund der erfassten Parameter und in Kenntnis der optimalen Siegelkraft Fson daraufhin den Antrieb 30 bzw. den Servomotor 31 derart ansteuert, dass dessen Bewegung die erforderliche Siegelkraft Fson erzeugt. For the operation of the cross-seam-sealing device 20 or the tubular-bag machine 10, reference is now made to FIG. 6 in a first embodiment. It can be seen that the sealing force F determined by means of the force transducers 38, 39, the strain gages 43, 44 or the force bolt 45 is the control device 35, as well as the position P is the cross-seam sealing jaws 23, 24 of the control device 35 supplied as an input signal. In addition, according to FIG. 5, the signal of the position sensors 47, 48 and of the sensor element 49 can be supplied to the control device 35 as an input signal. In the control device 35, an algorithm is present, the basis of the detected parameter, and in regard to the optimal sealing force F so then, n the actuator 30 and the servo motor 31 drives in such a way that its movement so generates the required sealing force F n.
In der Fig. 7 ist eine alternative Ausführungsform der Erfindung dargestellt, bei der im Antriebsstrang 32, die den Antrieb 30 mit den Quernahtsiegelbacken 23, 24 verbindet, eine Kraftverstellungseinrichtung 50 angeordnet ist. Die Kraftverstellungseinrichtung 50 weist pneumatisch, hydraulisch, elektrisch oder sonstige Mittel in Form wenigstens eines Aktuators auf, die dazu geeignet sind, bei im Wesentlichen stets derselben Bewegung des Antriebs 30 bzw. Servomotors 31 die Siegelkraft Fist der Quernahtsiegelbacken 23, 24 zu beeinflussen. Bei dem in der Fig. 7 dargestellten Ausführungsbeispiel wird somit zur Erzeugung der Siegelkraft Fsoii nicht der Servomotor 31 angesteuert, so dass dieser beispielsweise einen geringeren Weg zur Erzeugung einer geringeren Siegelkraft F erzeugt, sondern die Kraftverstellungseinrichtung 50, die beispielsweise verstellbare Federmittel oder sonstiges aufweist, um die Siegelkraft F in gewünschter Weise zu reduzieren bzw. zu erhöhen, so dass diese die gewünschte Siegelkraft Fson aufweist. FIG. 7 shows an alternative embodiment of the invention in which a force adjustment device 50 is arranged in the drive train 32 which connects the drive 30 to the transverse sealing jaws 23, 24. The force adjusting device 50 has pneumatic, hydraulic, electrical or other means in the form of at least one actuator, which are adapted to substantially always the same movement of the drive 30 and servomotor 31, the sealing force F is the cross-seaming jaws 23, 24 to influence. In the exemplary embodiment illustrated in FIG. 7, the servo motor 31 is thus not driven to generate the sealing force Fsoii, so that it produces, for example, a smaller path for producing a lower sealing force F, but instead the force adjusting device 50, which has adjustable spring means or otherwise, for example. to reduce or increase the sealing force F in the desired manner, so that it has the desired sealing force F so n.
In der Fig. 8 ist ein Bildausschnitt dargestellt, wie er auf der als Bildschirm ausgebildeten Anzeigeeinheit 36 erkennbar ist. Hierbei erkennt man bezüglich eines Parameters, beispielsweise der erfassten Parallelität der beiden Quernahtsiegelbacken 23, 24 einen Sollwert 52, zwei obere Schwellwerte 53, 54 sowie zwei untere Schwellwerte 55, 56. Ferner erkennt man für jede produzierte Schlauchbeu- telpackung 1 , symbolisiert durch einen Punkt 58, die erfasste Parallelität der Quernahtsiegelbacken 23, 24, die beispielsweise mittels der Positionssensoren 47, 48 erfasst wird. Solange die Punkte 58 bzw. die Ist-Werte der Parallelität der Quernahtsiegelbacken 23, 24 sich zwischen den Schwellwerten 53 und 55 befindet, hat der erfasste Wert der Parallelität beispielsweise keinen Einfluss auf die Einstellung der Siegelkraft F der Quernahtsiegelbacken 23, 24. Sind die erfass- ten Werte demgegenüber beispielsweise im Bereich zwischen den beiden oberen Schwellwerten 53 und 54, so wird ein entsprechender Warnhinweis an einen Bediener, z. B. in optischer oder akustischer Form, ausgegeben. Daraus schließt der Bediener, dass in diesem Bereich zwar die Parallelität der Quernahtsiegelbacken 23, 24 noch für eine hinreichende Qualität der Quersiegelnähte 3, 4 ausreichend ist, jedoch eine Überprüfung bzw. Korrektur sinnvoll ist. Alternativ zu einem Warnhinweis kann dieser Wertebereich dazu führen, dass die Siegelkraft F zur Sicherstellung der Siegelqualität beispielsweise automatisch durch die Steuereinrichtung 35 erhöht oder erniedrigt wird. Überschreitet demgegenüber die Parallelität der Quernahtsiegelbacken 23, 24 den oberen Schwellwert 54, so führt dies beispielsweise zu einem Stopp der Produktion der Schlauchbeutelmaschine 10. FIG. 8 shows an image detail as can be seen on the display unit 36 in the form of a screen. In this case, a setpoint value 52, two upper threshold values 53, 54 and two lower threshold values 55, 56 can be recognized with respect to one parameter, for example the detected parallelism of the two cross-seam sealing jaws 23, 24. telpackung 1, symbolized by a point 58, the detected parallelism of the cross-seam sealing jaws 23, 24, which is detected for example by means of the position sensors 47, 48. For example, as long as the points 58 or the actual values of the parallelism of the transverse sealing jaws 23, 24 are between the threshold values 53 and 55, the detected value of the parallelism has no influence on the setting of the sealing force F of the transverse sealing jaws 23, 24 On the other hand, for example, in the range between the two upper threshold values 53 and 54, a corresponding warning is sent to an operator, e.g. B. in optical or acoustic form, issued. From this the operator concludes that in this area, although the parallelism of the transverse sealing jaws 23, 24 is still sufficient for a sufficient quality of the transverse sealing seams 3, 4, however, a check or correction makes sense. As an alternative to a warning, this value range can lead to the sealing force F being automatically increased or decreased by the control device 35, for example to ensure the quality of the seal. If, in contrast, the parallelism of the cross-seam sealing jaws 23, 24 exceeds the upper threshold value 54, this leads, for example, to a stop in the production of the tubular-bag machine 10.
Selbstverständlich sind entsprechende Darstellungen nicht nur für die angesprochene Parallelität der Quernahtsiegelbacken 23, 24, sondern zum Beispiel auch für den Unterschied zwischen der auf der rechten und der linken Seite der Quernahtsiegelbacken 23 erfassten Siegelkräfte F denkbar, so dass bei einem zu großen Unterschied der Siegelkräfte F beispielsweise ein Hinweis zur Kontrolle der Quernahtsiegelbacken 23, 24 oder zum Reinigen bzw. zur Neueinstellung erfolgt. Auch sine alle vorab im Rahmen der Erfindung erläuterten Parameter, sowie gegebenenfalls weitere Parameter, die für die Qualität der Quersiegelnähte 3, 4 erforderlich sind, darstellbar und entsprechend durch den Algorithmus der Steuereinrichtung 35 verarbeitbar. Insbesondere kann der Algorithmus in der Steuereinrichtung 35 auch die einzelnen erfassten Parameter miteinander verknüpfen und daraus beispielsweise eine Gesamtabweichung berechnen oder gegebenenfalls Gegenmaßnahmen einleiten. Of course, corresponding representations are conceivable not only for the mentioned parallelism of the transverse sealing jaws 23, 24, but also, for example, for the difference between the sealing forces F detected on the right and the left side of the transverse sealing jaws 23, so that if the sealing forces F are too great For example, an indication to control the Quernahtsiegelbacken 23, 24 or for cleaning or readjustment takes place. Also, all the parameters explained above in the context of the invention, as well as optionally further parameters which are required for the quality of the transverse sealing seams 3, 4, can be represented and processed accordingly by the algorithm of the control device 35. In particular, the algorithm in the control device 35 can also link the individual parameters detected with one another and calculate therefrom, for example, a total deviation or, if appropriate, initiate countermeasures.
Die soweit beschriebene Quernahtsiegeleinrichtung 20 bzw. die Schlauchbeutelmaschine 10 können in vielfältiger Art und Weise abgewandelt bzw. modifiziert werden, ohne vom Erfindungsgedanken abzuweichen. Dieser besteht in einer gezielten Ansteuerung des Antriebs 30 bzw. des Servomotors 31 der Quernahtsiegeleinrichtung 20, alternativ in einer gezielten Ansteuerung der Kraftverstellungseinrichtung 50 zur Sicherstellung einer bestimmten Siegelkraft FSOM der Quernahtsiegelbacken 23, 24, wobei verschiedenste Parameter zur Erfassung des Ist-Zustandes dienen. So ist es insbesondere auch im Rahmen der Erfindung die Quersiegelnähte 3, 4 durch eine Ultraschallsiegelung herzustellen, wozu die Quernahtsiegelbacken 23, 23b, 24, 24b, wie dies aus dem Stand der Technik bekannt, ausgebildet sind. The transverse seam sealing device 20 or the tubular pouch machine 10 described so far can be modified or modified in many different ways without deviating from the idea of the invention. This consists in one Selective control of the drive 30 and the servomotor 31 of the cross-seam sealing device 20, alternatively in a targeted control of the force adjustment device 50 to ensure a specific sealing force F SO M of the transverse sealing jaws 23, 24, where a variety of parameters for detecting the actual state serve. Thus, it is in particular also within the scope of the invention to produce the transverse sealing seams 3, 4 by an ultrasonic sealing, for which purpose the transverse sealing jaws 23, 23b, 24, 24b, as known from the prior art, are formed.

Claims

Ansprüche claims
1. Verfahren zum Betreiben einer Quernahtsiegeleinrichtung (20) in einer A method of operating a cross-seam sealing device (20) in a
Schlauchbeutelmaschine (10), mit zwei Quernahtsiegelbacken (23; 23b, 24; 24b), die über einen einen Servomotor (31) aufweisenden Antrieb (30) gegeneinander bewegbar angeordnet sind, um einen zwischen den Quernahtsiegelbacken (23; 23b, 24; 24b) angeordneten Packstoffschlauch (7) insbesondere durch Einwirkung von Wärme und Druck im Bereich von Quersiegelnähten (3, 4) zu verschweißen, wobei wenigstens eine der beiden Quernahtsiegelbacken (23; 23b, 24; 24b) zumindest mittelbar einen Drucksensor (38, 39; 43, 44; 45) zur Messung des Siegeldrucks (Fist) der betreffenden Quernahtsiegelbacke (23; 23b, 24; 24b) aufweist, wobei die Position (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) erfasst wird, und wobei das Signal des Siegeldrucks (Fist) und die Position (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) einer Steuereinrichtung (35) zugeführt werden, dadurch gekennzeichnet, dass die Steuereinrichtung (35) die Bewegung der Quernahtsiegelbacken (23; 23b, 24; 24b) und somit deren Siegelkraft (F) zumindest in Abhängigkeit von dem erfassten Siegeldruck (Fist) und der Position (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) regelt. A tubular bag machine (10), comprising two transverse sealing jaws (23; 23b, 24; 24b), which are arranged movably relative to one another via a drive (30) having a servomotor (31) in order to move between the transverse sealing jaws (23; 23b, 24; arranged packaging material hose (7) in particular by the action of heat and pressure in the region of transverse sealing seams (3, 4), wherein at least one of the two transverse sealing jaws (23; 23b, 24; 24b) at least indirectly a pressure sensor (38, 39, 43; 44, 45) for measuring the sealing pressure (F ist ) of the respective transverse sealing jaw (23; 23b, 24; 24b), the position (P ist ) of the transverse sealing jaws (23; 23b, 24; 24b) being detected, and wherein Signal of the sealing pressure (F ist ) and the position (P ist ) of the transverse sealing jaws (23; 23b, 24; 24b) are fed to a control device (35), characterized in that the control device (35) controls the movement of the transverse sealing jaws (23; , 24; 24b) and thus d at least in dependence on the detected sealing pressure (F ist ) and the position (P ist ) of the transverse sealing jaws (23; 23b, 24; 24b) regulates.
2. Verfahren nach Anspruch 1 , 2. The method according to claim 1,
dadurch gekennzeichnet,  characterized,
dass die Bewegung der Quernahtsiegelbacken (23; 23b, 24; 24b) durch eine Ansteuerung des Antriebs (30) geregelt wird. Verfahren nach Anspruch 1 , in that the movement of the cross-seam sealing jaws (23; 23b, 24; 24b) is regulated by a drive of the drive (30). Method according to claim 1,
dadurch gekennzeichnet, characterized,
dass die Bewegung der Quernahtsiegelbacken (23; 23b, 24; 24b) durch eine Ansteuerung einer mit den Quernahtsiegelbacken (23; 23b, 24; 24b) wirkverbundenen Kraftverstellungseinrichtung (50) erfolgt. in that the movement of the transverse sealing jaws (23; 23b, 24; 24b) is effected by an activation of a force adjusting device (50) operatively connected to the transverse sealing jaws (23; 23b, 24; 24b).
Verfahren nach einem der Ansprüche 1 bis 3, Method according to one of claims 1 to 3,
dadurch gekennzeichnet, characterized,
dass zusätzliche, die Schweißqualität beeinflussende Parameter, wie beispielsweise die geometrische Parallelität der Quernahtsiegelbacken (23; 23b, 24; 24b) oder der Strom (list) des Antriebs (30) erfasst und der Steuereinrichtung (35) als Eingangsgrößen zugeführt werden, dass in der Steuereinrichtung (35) für jeden erfassten Parameter Grenzwerte (53 bis 56) abgespeichert sind, und dass die Steuereinrichtung (35) einen Algorithmus zur Regelung der Bewegung der Quernahtsiegelbacken (23; 23b, 24; 24b) bzw. zur Ansteuerung der Kraftverstellungseinrichtung (50) in Abhängigkeit der erfassten Parameter aufweist. additional parameters influencing the quality of welding, such as the geometric parallelism of the transverse sealing jaws (23; 23b, 24; 24b) or the current (l ist ) of the drive (30), are detected and fed to the control device (35) as input variables Limit values (53 to 56) are stored for each detected parameter, and the control device (35) has an algorithm for controlling the movement of the transverse sealing jaws (23; 23b, 24; 24b) or for actuating the force adjustment device (50) ) depending on the detected parameters.
Verfahren nach Anspruch 4, Method according to claim 4,
dadurch gekennzeichnet, characterized,
dass die Parameter für jeden Schweißvorgang erfasst und ggf. mit ihren Grenzwerten (53 bis 56) optisch in zeitlicher Entwicklung auf einer Anzeigeeinheit (36), insbesondere einem Bildschirm, dargestellt werden. that the parameters are recorded for each welding operation and, if appropriate, are displayed visually in temporal development on a display unit (36), in particular a screen, with their limit values (53 to 56).
Quernahtsiegeleinrichtung (20) in einer Schlauchbeutelmaschine (10), mit zwei Quernahtsiegelbacken (23; 23b, 24; 24b), die über einen einen Servomotor (31) aufweisenden Antrieb (30) gegeneinander bewegbar angeordnet sind, um einen zwischen den Quernahtsiegelbacken (23; 23b, 24; 24b) angeordneten Packstoffschlauch (7) durch Einwirkung insbesondere von Wärme und Druck im Bereich von Quersiegelnähten (3, 4) zu verschweißen, wobei wenigstens eine der beiden Quernahtsiegelbacken (23; 23b, 24; 24b) zumindest mittelbar einen Drucksensor (38, 39; 43, 44; 45) zur Messung des Siegeldrucks (Fist) der betreffenden Quernahtsiegelbacke (23; 23b, 24; 24b) aufweist, wobei die Position (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) erfasst wird, und wobei das Signal des Siegeldrucks (Fist) und die Posi- tion (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) einer Steuereinrichtung (35) zugeführt werden, dadurch gekennzeichnet, dass die Steuereinrichtung (35) einen Algorithmus zur Ansteuerung des Antriebs (30) der Quernahtsiegelbacken (23; 23b, 24; 24b) oder einer Kraftverstellungseinrichtung (50) für die Quernahtsiegelbacken (23; 23b, 24; 24b) in Abhängigkeit von dem erfassten Siegeldruck (Fist) und der Position (Pist) der Quernahtsiegelbacken (23; 23b, 24; 24b) aufweist. Cross-seam-sealing device (20) in a tubular bag machine (10), with two transverse sealing jaws (23; 23b, 24; 24b), which are arranged movable against each other via a drive (30) having a servo motor (31) in order to move between the transverse sealing jaws (23; 23b, 24, 24b) by the action of heat and pressure in the region of transverse sealing seams (3, 4), wherein at least one of the two transverse sealing jaws (23, 23b, 24, 24b) at least indirectly forms a pressure sensor. 38, 39; 43, 44; 45) for measuring the sealing pressure (F ist ) of the respective transverse sealing jaw (23; 23b, 24; 24b), the position (P ist ) of the transverse sealing jaws (23; 23b, 24; and where the signal of the sealing pressure (F is ) and the posi- tion (P) of the transverse-seam-sealing jaws (23; 23b, 24; 24b) are fed to a control device (35), characterized in that the control device (35) an algorithm for control of the drive (30) of the transverse-seam-sealing jaws (23; 23b, 24 24b) or force adjustment means (50) for the transverse sealing jaws (23; 23b, 24; 24b) in response to the detected sealing pressure (F ist ) and the position (P ist ) of the transverse sealing jaws (23; 23b, 24; 24b) ,
Quernahtsiegeleinrichtung nach Anspruch 6, Cross-seam sealing device according to claim 6,
dadurch gekennzeichnet, characterized,
dass die Kraftverstellungseinrichtung (50) einen pneumatisch, hydraulisch, mechanisch, oder elektrisch wirkenden Aktuator aufweist, der mit wenigstens einer der beiden Quernahtsiegelbacken (23; 23b, 24; 24b) wirkverbunden angeordnet ist. in that the force adjustment device (50) has a pneumatically, hydraulically, mechanically or electrically acting actuator which is operatively arranged with at least one of the two transverse sealing jaws (23; 23b, 24; 24b).
Quernahtsiegeleinrichtung nach Anspruch 6 oder 7, Cross-seaming device according to claim 6 or 7,
dadurch gekennzeichnet, characterized,
dass der Drucksensor mit wenigstens einer der Quernahtsiegelbacken (23; 23b, 24; 24b) oder dem mit den Quernahtsiegelbacken (23; 23b, 24; 24b) verbundenen Antriebsmechanismus (32) gekoppelt ist und als in that the pressure sensor is coupled to at least one of the transverse seaming jaws (23; 23b, 24; 24b) or the drive mechanism (32) connected to the transverse seaming jaws (23; 23b, 24;
Kraftaufnehmer (38; 38b, 39; 39b), Dehnmessstreifen (43, 44) oder Kraftbolzen (45) ausgebildet ist. Force transducer (38, 38b, 39, 39b), strain gauges (43, 44) or power bolt (45) is formed.
Quernahtsiegeleinrichtung nach einem der Ansprüche 6 bis 8, Cross-seaming device according to one of claims 6 to 8,
dadurch gekennzeichnet, characterized,
dass zusätzliche Sensorelemente (, 47, 48, 49) zur Erfassung der that additional sensor elements (, 47, 48, 49) for detecting the
Durchbiegung wenigstens einer Quernahtsiegelbacke (24b) und/oder der Position und Lage wenigstens einer Quernahtsiegelbacke (23b) und/oder der Stromaufnahme (list) und/oder der Position (Pist) des Antriebs (30) vorgesehen sind. Bending of at least one transverse sealing jaw (24b) and / or the position and position of at least one transverse sealing jaw (23b) and / or the current input (l ist ) and / or the position (P ist ) of the drive (30) are provided.
10. Quernahtsiegeleinrichtung nach einem der Ansprüche 6 bis 9, 10. Cross-seaming device according to one of claims 6 to 9,
dadurch gekennzeichnet,  characterized,
dass wenigstens eine der Quernahtsiegelbacken (23) mit wenigstens einer Druckfeder (33) gekoppelt ist.  in that at least one of the transverse sealing jaws (23) is coupled to at least one compression spring (33).
PCT/EP2012/056773 2011-05-06 2012-04-13 Method for operating a transverse-seam-sealing arrangement in a tubular-bag machine, and transverse-seam-sealing arrangement in a tubular-bag machine WO2012152528A1 (en)

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DE102011075424.5A DE102011075424B4 (en) 2011-05-06 2011-05-06 Method for operating a transverse seam sealing device in a tubular bagging machine and transverse seam sealing device in a tubular bagging machine

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