EP0165818A2 - Folienantriebsvorrichtung - Google Patents

Folienantriebsvorrichtung Download PDF

Info

Publication number
EP0165818A2
EP0165818A2 EP85304419A EP85304419A EP0165818A2 EP 0165818 A2 EP0165818 A2 EP 0165818A2 EP 85304419 A EP85304419 A EP 85304419A EP 85304419 A EP85304419 A EP 85304419A EP 0165818 A2 EP0165818 A2 EP 0165818A2
Authority
EP
European Patent Office
Prior art keywords
bag material
film
drive unit
belt
speed
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP85304419A
Other languages
English (en)
French (fr)
Other versions
EP0165818A3 (en
EP0165818B1 (de
Inventor
Alfred Alexander Taylor
John Paul North
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessione taylor Alfred Alexander
Original Assignee
Individual
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
Priority claimed from AU43752/85A external-priority patent/AU574191B2/en
Application filed by Individual filed Critical Individual
Publication of EP0165818A2 publication Critical patent/EP0165818A2/de
Publication of EP0165818A3 publication Critical patent/EP0165818A3/en
Application granted granted Critical
Publication of EP0165818B1 publication Critical patent/EP0165818B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B65B9/2014—Tube advancing means
    • B65B9/2021—Tube advancing means combined with longitudinal welding 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
    • 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
    • B65B9/207—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 advancing continuously

Definitions

  • the present invention relates to packaging machinery and more particularly but not exclusively to a film drive for a packaging machine.
  • a tubular bag material In the packaging of product which comprises a plurality of discrete units, it is common for a tubular bag material to be formed from sheet material, and the tubular bag material delivered to a filling head whereat the product is delivered to the interior of the tube material.
  • the tube material is subsequently sealed at spaced intervals and discrete bags severed from the tubular material.
  • the sheet material generally comprises a plastic film which is sealed by heat or other means to form the tubular material.
  • the tube material is also sealed transverse of its longitudinal direction of extension, so as to form the discrete bag. This sealed area is also severed by a knife so that the discrete bags are separated from the tubular material.
  • the speed of the film through the machine determines the period of time to which the plastic film is exposed to the sealing heads which form the discrete bags.
  • the temperature of the sealing heads In order for correct sealing to take place, the temperature of the sealing heads must be adjusted to match the speed of the film material so that proper sealing does take place. More particularly, as the film speed increases the temperature of sealing must also increase since sealing must take place over a shorter interval of time, during which the sealing heads are in contact with the plastic film. It is a disadvantage of these known packaging machines, that it is difficult to adjust the temperature to the duration of time during which the sealing heads are in contact with the plastic film. If the adjustment is incorrect, incorrect sealing takes place with the result that the end product is defective.
  • said film drive unit being operable on a continuous basis by comprising, a pair of endless belts having generally parallel co-extensive portions engaging said bag material to move same through said machine, motor means drivingly attached to said endless belts to drive same so that said belt portions have the same velocities and are moving in the same direction, and control means to control said motor means to govern the speed of said endless belts so that said sealing means is engaged with said bag material for a predetermined fixed period of time.
  • a method of continuously driving a film material through a packaging machine said machine having means to supply sheet film material, means to form the film material into a tubular bag material, and sealing means to intermittently engage said bag material to sealingly close predetermined length of said bag material to form discrete bags containing product delivered to the interior of said bag material; said method comprising the steps of driving said bag material at a predetermined velocity while said sealing means engages said bag material, and then accelerating or deaccelerating said bag material to determine the production rate of said machine.
  • FIG. 1 there is schematically depicted a drive unit 10 of a packaging machine which unit 10 is operable on a continuous basis.
  • the packaging machine includes means to deliver sheet film material 11 to a former 12 which forms the sheet material 11 into a tubular configuration.
  • the tubular material is moved through the packaging machine by a pair of endless belts 13 which are provided with a plurality of holes 14 which face the tubular material.
  • Located at the rear of the belt 13 is a plennum chamber 15 to which there is delivered a vacuum by means of conduit lb.
  • the chamber 15 is open to an inside surface of the belt 13 so that the vacuum is applied to the holes 14 so that the tubular material is held against the belts 13.
  • the belts 13 pass around rollers 17 of which two at least are driven.
  • rollers 17 could each be driven by a shaft 18 coupled to a worm drive unit 19.
  • the drive unit 19 would be connected to an electric motor which would be controlled to vary the peripheral speed of the belt 13.
  • the motor could be a stepping, servo, computer controlled or any other motor having suitable control characteristics.
  • the speed of the belt 13 would be controlled so that the tubular material delivered to the sealing heads would be travelling at a predetermined velocity so that the sealing heads are in contact with the tubular material for a set period of time. Thereafter, the motors would increase the speed of the endless belts 13 to increase the production rate of the packaging machine or alternatively decrease the speed of the tubular material, to achieve a decrease in the output of the packaging machine. Accordingly, the speed of the endless belt 13 may be adjusted to accommodate different products and/or sheet packaging material 11.
  • FIG 2 there is schematically depicted three graphs which illustrate typical velocity profiles of the endless belts 13.
  • the period of time D is the period during which the sealing heads are in contact with the tubular film material. Thereafter, the speed of the film is decreased and subsequently increased.
  • the period of time D is the same, and the speed of the film is only slightly decreased.
  • the period of the interval D is the same with the speed of the film increased after the period D to increase the production rate of the machine. With the period of time D constant, the velocity is also held constant for that time.
  • a drive roller 21 is provided around which the film 11 passes.
  • the film 11 also passes around an idler roller 23 and is sandwiched between the film drive roller 21 and a further idler roller 22.
  • the roller 21 is attached to a servo motor 22 which determines the velocity of the film 11 as required.
  • the servo motor 22 could be driven so as to provide the velocity profile of any one of the velocity profiles depicted in Figure 2.
  • FIG 4 wherein the tubular material 24 is more fully depicted relative to a backing bar 20 as provided in Figures 1 and 3.
  • the tubular material 24 overlaps at portions 25, which portions 25, are heat sealed via heat provided by the sealing head 26.
  • the sealing head 26 is located within the chamber 15.
  • This particular arrangement in respect of sealingly tubular material 24 is particularly different from the prior art in that the overlap portions 25 are engaged by the belt 13 as well as the opposite side of the tubular material 24. Conventionally, the other two sides of the tubular material are generally engaged. This provides specific advantages in respect of the continuous sealing of the tubular material 24, which is driven in a continuous manner past the heating head 26.
  • the shafts 16 would be driven by servo motors so that the velocity of the arms 15, while the heads 14 are engaged with the curved portions 24 of the track 23, is greater than the velocity when the arms 15 are moving through an arc where the heads 14 are moving along the linear portion 25 of the track 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP19850304419 1984-06-20 1985-06-20 Folienantriebsvorrichtung Expired EP0165818B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPG559584 1984-06-20
AU5595/84 1984-06-20
AU43752/85A AU574191B2 (en) 1984-06-20 1985-06-17 Film drive unit

Publications (3)

Publication Number Publication Date
EP0165818A2 true EP0165818A2 (de) 1985-12-27
EP0165818A3 EP0165818A3 (en) 1986-12-17
EP0165818B1 EP0165818B1 (de) 1989-08-30

Family

ID=25626475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850304419 Expired EP0165818B1 (de) 1984-06-20 1985-06-20 Folienantriebsvorrichtung

Country Status (1)

Country Link
EP (1) EP0165818B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727707A (en) * 1986-12-15 1988-03-01 Kliklok Corporation Packaging film feeding apparatus and method
EP0275181A3 (en) * 1987-01-14 1989-11-29 Alfred Alexander Taylor A film drive unit for a packaging machine
US5753067A (en) * 1994-12-23 1998-05-19 Ishida Co., Ltd. Transverse sealer for a bag maker with variable operating speed

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315067C2 (de) * 1993-05-06 1999-01-21 Mesoma Hans Guenter Kauck Gmbh Verfahren und Vorrichtung zur Bildung einer Schweiß- oder Siegelnaht bei einem thermoplastischen Hüllstoff
DE19726205A1 (de) * 1997-06-20 1998-12-24 Rovema Gmbh Vorrichtung zum Verschweißen einer Längssiegelnaht und zum Weitertransport einer Folienbahn
DE102006025831B4 (de) * 2006-06-02 2013-10-31 Rovema Gmbh Vorrichtung zum Verschweißen von Kunststoff zu Verpackungszwecken (Torquemotor)
NL2028931B1 (en) * 2021-08-05 2023-02-17 Vmi Holland Bv Packaging device and method for packaging discrete medicaments in pouches

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762663A (en) * 1971-11-30 1973-10-02 Ge C Static means for generating inertia compensation signals in reel drives
US4043098A (en) * 1976-08-26 1977-08-23 Package Machinery Company Vertical form, fill and seal packaging machine with improved back-up bar for longitudinal sealing
US4136505A (en) * 1977-11-11 1979-01-30 Package Machinery Company Tubeless vertical form, fill and seal packaging machine with improved feed means
US4218863A (en) * 1978-11-22 1980-08-26 American Can Company Continuous motion wrapping machine
US4288965A (en) * 1979-08-27 1981-09-15 Hayssen Manufacturing Company Form-fill-seal packaging method and apparatus
DE3113634A1 (de) * 1981-04-04 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum herstellen von beutelpackungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727707A (en) * 1986-12-15 1988-03-01 Kliklok Corporation Packaging film feeding apparatus and method
EP0275181A3 (en) * 1987-01-14 1989-11-29 Alfred Alexander Taylor A film drive unit for a packaging machine
US5753067A (en) * 1994-12-23 1998-05-19 Ishida Co., Ltd. Transverse sealer for a bag maker with variable operating speed

Also Published As

Publication number Publication date
EP0165818A3 (en) 1986-12-17
EP0165818B1 (de) 1989-08-30

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