US3871270A - Bag-making machinery - Google Patents

Bag-making machinery Download PDF

Info

Publication number
US3871270A
US3871270A US394816A US39481673A US3871270A US 3871270 A US3871270 A US 3871270A US 394816 A US394816 A US 394816A US 39481673 A US39481673 A US 39481673A US 3871270 A US3871270 A US 3871270A
Authority
US
United States
Prior art keywords
tube sections
tube
rotating
devices
tongue
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.)
Expired - Lifetime
Application number
US394816A
Other languages
English (en)
Inventor
Gustav Kuckhermann
Richard Feldkamper
Walter Paul
Friedrich Franz Brockmuller
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.)
Individual
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3871270A publication Critical patent/US3871270A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/04—Feeding sheets or blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/046—Feeding sheets or blanks involving changing orientation or changing direction of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/10—Feeding or positioning webs
    • B31B50/106—Feeding or positioning webs involving changing orientation or changing direction of transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/63—Oscillating, pivoting around an axis parallel to face of material, e.g. diverting means
    • B65H2404/632—Wedge member

Definitions

  • rotating means are provided between a tubeforming machine for making tube sections and a folding machine for forming the cross-bottom folds.
  • the rotating means serve to turn each tube section from a longitudinal position in which it leaves the tubeforming machine to a transverse position in which it must pass through the folding machine.
  • the rotating means comprise two superposed rotating devices, de-,
  • fleeting means being provided upstream of said devices for allocating the tube sections alternately to each device, and a pair of conveyors being provided downstream of the devices for transferring the transversely fed tube sections in a row onto a conveyor of said folding machine.
  • the invention relates to machinery for making bags having cross-bottom folds, comprising a tube-forming machine for making single or multi-ply tube sections from paper or plastics film and discharging the tube sections longitudinally, means disposed downstream of the tube-forming machine for rotating the discharged tube sections through 90 into a transverse position, and a folding machine disposed downstream of the retating means for forming the folds at one or both ends of each transversely-fed tube section.
  • the rotating means make it necessary for the tube sections, after these have been severed from a tubular web, to be brought to a significantly-larger spacing from one another so as to permit them to be rotated freely through 90. More particularly, this spacing must beso large that even the longest tube sections that are to be processed by the machinery will not be obstructed as they are turned by the rotating means. This requirement calls for a correspondingly large spacing between turntables which form part of the rotating means. Further, with a given production rate, ie with a given cycle for the bag-making machinery, the spacing between the turntables demands a particular translatory speed to be executed by the turntables, the linear speed being considerably higher than the speed with which the tubular web is being fed in the tube-forming machine.
  • the invention aims to avoid fluttering ofthe tube sections during their rotation even in the case of high production rates.
  • the intervals between the turning stations in the rotating means can be halved without the individual tube sections obstructing one another during rotation. Accordingly, the rotating means can operate with half the translatory speed that would otherwise be necessary. This reduction in operating speed not only minimises the danger of fluttering of the leading ends of the workpieces but also permits the rotating means to have a shorter structural length. Further, the lower operating speed of the rotating means increases the life of this complicated equipment, because wear will be less.
  • Each rotating device preferably includes conveyor means effective to subject the tube sections to translation during rotation, the conveyor means of both said devices being operative at a suitable constant speed which avoids fluttering of the leading ends of the tube sections during rotation. Since tube sections having different lengths are discharged from the tube-forming machine at correspondingly different speeds, each rotating device is'preferably provided upstream thereof with a pair of rollers for bringing the tube sections to the constant speed of the conveyor means before engagement by said devices, the rollers being of course turned at the exactly required speed. In this way, each tube section will be engaged exactly at the point about which it is to be rotated, regardless of the speed with which it is discharged from the tube-forming machine.
  • the constant linear speed of the rotating means also simplifies transfer of the transversely-fed tube sections to the folding machine and the required accurate setting of the spacings between the transverse tube sections during feeding through the folding machine.
  • the deflecting means comprise a deflector tongue displaceable within limits, an actuating lever for displacing said tongue, a reciprocatable rod on which there are two substantially coaxial storage springs, said lever being interposed between said springs, wherein, whilst one of the springs is being stressed during reciprocating movement of the rod, the actuating lever engages one side of a pivotable locking finger and, whilst the other spring is being stressed, the actuating lever engages an opposite side of said finger, the spacing between the finger sides determining the limiting positions of the tongue and the finger being intermittently pivoted insequence with the cycle of the machinery so that it releases the actuating lever to deflect the tongue under the influence of one of the stressed springs just before each tube section reaches the tongue.
  • FIG. 1 is a side elevation of bag-making machinery employing a jaw rotator
  • FIG. 2 is a plan view of the tube sections that are being fed through the bag-making machinery of FIG. 1; for the purpose of clarity, the tube sections passing through the upper of the two rotating devices are shown in full lines and those passing through the lower rotating device are shown in chain-dotted lines; and
  • FIG. 3 is an enlarged side elevation of deflecting means to be used with the FIG. 1 machinery for alternately supplying the rotating devices with tube sections arriving from a tube-forming machine.
  • the illustrated bag-making comprises a tube-forming machine 1, a jaw rotator 2 for tube sections coming from the machine 1, and a folding machine 3 for forming cross-bottom folds at one or both ends of each tube section.
  • the machines 1 and 3 are of known construction and are therefore not illustrated in detail.
  • the tube-forming machine 1 fabricates a continuous single or multi-ply tubular web of flat material such as paper or plastics film, provides this web with any necessary adhesive coatings and with transverse perforations at intervals corresponding to the desired lengths of the bags to be made, and severs individual tube sections S along the transverse perforations with the aid ofknown severing means.
  • a belt conveyor 4 discharges the tube sections S at very close spacings from one another in the longitudinal direction.
  • the folding machine 3 forms folds, preferably crossbottom folds, at at least one end of each tube section S.
  • the tube sections S be fedin a direction transversely of their lengths and at a particular spacing r from one another.
  • the jaw rotator 2 serves to turn the longitudinally-fed tube sections S through 90 after they have left the machine 1. It comprises two like superposed rotating devices 5 ans 5 of a construction known from German Specification No. 1,586,347. Each rotating device comprises a double chain conveyor 51, 51 or 52, 52'
  • the double chain conveyors are moved at a constant speed in the direction of the arrow I a.
  • the individual chains are set relatively to one another so that their turntables become accurately superposed in the respective conveying planes of the double chain conveyors (as best seen in FIG. 1).
  • the turntables of the double chain conveyor of the device 5 are offset with respect to those of the double chain conveyor of the device 5 by a distance equal to .r/2.
  • the turntables are provided with control levers fixed to their rotary shafts and these engage stationary control cams 8,8 constructed so that, as each turntable is conveyed lengthwise of the rotating means by the chains, it is rotated accurately through 90.
  • a deflecting tongue 9 Upstream of the rotating means there is a deflecting tongue 9, which can be oscillated within limits in sequence with the operating cycle of the machine, and an intermediate belt conveyor 10 or 10 for each of the rotating devices, as well as a pair of rollers 11 or 11', respectively. At least one roller of each pair is rotated at a peripheral speed such that a tube section passing therebetween is fed at exactly the same speed as the linear speed of the conveyor chains in the rotating means.
  • the rollers of each pair may be circular cylindrical and intermittently brought into contact with one another for a short period in sequence with the operating cycle of the machine. In the illustrated construction.
  • one roller of each pair is of circular cross-section and the other roller is provided with a sector-shaped projection, the two rollers of each pair being spaced from'one another so that only the sector of one of the rollers will make contact with the periphery of the other roller.
  • the aligning conveyor 13 is of known construction and is moved at a lower feeding speed than the pair of belt conveyors 12, 12. Also, the conveyor 13 is provided with transverse bars 14 at equal intervals; these accurately align the tube sections as they arrive from the rotating devices 5 and 5'.
  • the longitudinally-fed tube sections S discharged from the machine 1 on the conveyor 4 are alternately deflected by means of the tongue 9 towards the intermediate conveyor belts 10 and l0of the upper and lower rotating devices 5 and 5', respectively. They pass between the respective pairs of rollers 11 and 11 which,just before the tube sections are successively engaged by the pairs of turntables 6, 6 or 7, 7', bring the tube sections to a linear speed that is the same as the constant linear speed of the chain conveyors 51, 51' or 52, 52', the tube sections being accurately aligned centrally of the respective pairs of turntables.
  • the control cams 8,8 cause the turntables to be rotated accurately through whereby the tube sections assume a transverse position before they are transferred to the conveyors 12 and 12 which throw the tube sections onto the aligning conveyor 13. Since the latter is moved slowly in comparison with the conveyors 12, 12', the leading edge of each tube section will strike one of the bars 14 of the conveyor 13. This causes each tube section to become accurately aligned and also accurately spaced from the adjoining tube sections by the centreto-centre spacing t which is essential for proper operation of the folding machine 3.
  • the allocation of the longitudinally and rapidly fed and closely spaced tube sections to the individual rotating devices 5, 5 calls for very rapid oscillation of the deflector tongue 9 between the two limiting positions thereof.
  • the drive for the tongue therefore requires a special construction, as diagrammatically illustrated in FIG. 3.
  • Anactuating lever 15 for the tongue 9 engages between two storage springs 16, 16' which are threaded onto a common rod 17 and the free ends of which are supported between collars on the rod.
  • the rod is reciprocated in a longitudinal direction by a cam drive 18, 19 which turns at twice the speed of the operating cycle of the bag-making machinery.
  • a finger 20 Near the free end of the actuating lever 15 there is a finger 20 which, by means of a cranked lever 21 and a cam drive 22, 23, is moved up and .down once during each operating cycle of the machine. In its upper position the finger 20 locks the actuating lever 15 and in its lower position it releases it.
  • the two crank drives 18, 19 and 22, 23 are set relatively to one another so that the finger 20 will release the actuating lever 15 in both dead-centre positions of the drive 18, 19 or rod 17.
  • the tongue 9 is disposed in its lower limiting position and a tube section S is being deflected towards the upper interme-' diate conveyor 10 for feeding to the upper rotating device 5.
  • the lever engages the left-hand side 24 of the finger 20. Whilst the tube section S is being fed to the upper intermediate conveyor 10, the storage spring 16 is being stressed under the action of the crank drive l8, l9 moving the rod 17 towards the right-hand side. immediately before arrival of the next tube section at the tongue 9, the finger 20 will release the lever 15. This enables the spring 16 to impel the lever 15 in an anticlockwise direction so as to fling the tongue 9 to its upper limiting position so that the next tube section will be deflected downwardly to reach the pivoting device 5'.
  • An apparatus for making bags with cross-bottom folds comprising a tube-forming meansfor making tube sections having at least one ply from flat sheet material selected from the group consisting of paper and plastic film and discharging the tube sections longitudinally, rotating means positioned downstream of the tubeforming means for rotating the discharged tube sections 90 while maintaining the tube sections in sub- I two superposed rotating devices, deflecting means positioned upstream of said rotating devices for directing the tube sections alternately to each device, and a pair of conveyors positioned downstream of the devices for transferring the transversely-fed tube sections in a row onto the conveyor of said folding means.
  • each of said rotating devices includes conveyor means effective to subject the tube sections to translation in a direction generally toward said folding means during rotation, the conveyor means of both said devices being operative'at a constant speed, and wherein each said devices is provided upstream thereof with a pair of rollers for bringing the tube sections to said constant speed before engagement by said devices.
  • said deflecting means comprises a deflector tongue moveable within limits, an actuating lever for moving said tongue, a reciprocat'able rod, two substantially coaxial storage springs mounted on said rod and adapted to be stressedunder the influence of one of the stressed springs just before each tube section reaches the tongue.

Landscapes

  • Making Paper Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US394816A 1972-09-11 1973-09-06 Bag-making machinery Expired - Lifetime US3871270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2244561 1972-09-11

Publications (1)

Publication Number Publication Date
US3871270A true US3871270A (en) 1975-03-18

Family

ID=5856022

Family Applications (1)

Application Number Title Priority Date Filing Date
US394816A Expired - Lifetime US3871270A (en) 1972-09-11 1973-09-06 Bag-making machinery

Country Status (6)

Country Link
US (1) US3871270A (it)
JP (1) JPS5625378B2 (it)
ES (1) ES418617A1 (it)
FR (1) FR2199287A5 (it)
GB (1) GB1420046A (it)
IT (1) IT998412B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991662A (en) * 1972-06-08 1976-11-16 Molins Limited Packing machines
US4007669A (en) * 1974-07-04 1977-02-15 Windmoller & Holscher Apparatus for reversing the running direction of tube sections in sack machines
FR2318788A1 (fr) * 1975-07-23 1977-02-18 Windmoeller & Hoelscher Dispositif pour former des paquets parallelepipediques de sachets avec bras de serrage montes en pince sur chariot coulissant
US4036115A (en) * 1974-08-08 1977-07-19 St. Regis-Aci Pty. Limited Sack making equipment
DE19823906A1 (de) * 1998-05-28 1999-12-16 Gretag Imaging Ag Fotomaterial-Leitanlage
US20120108409A1 (en) * 2009-01-28 2012-05-03 Uwe Koehn Device for producing bags from hose-shaped material
WO2023169873A1 (de) * 2022-03-10 2023-09-14 Winkler + Dünnebier Gmbh Vorrichtung und verfahren zur herstellung von verpackungsbehältnissen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109534A1 (de) * 2013-09-02 2015-03-05 Manroland Web Systems Gmbh Vorrichtung zur Druckweiterverarbeitung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1926421A (en) * 1929-08-12 1933-09-12 Andreas Arno Method and apparatus for manufacturing paper bags
US3556518A (en) * 1967-08-16 1971-01-19 Windmoeller & Hoelscher Apparatus for shifting a deflector in a machine for processing paper or plastics material sheeting, preferably a tube-making machine
US3566754A (en) * 1967-05-22 1971-03-02 Windmoeller & Hoelscher Plant for making bags
US3580141A (en) * 1967-08-28 1971-05-25 Windmoeller & Hoelscher Apparatus for paper sacks manufacture
US3618477A (en) * 1970-04-22 1971-11-09 Continental Can Co Method of and apparatus for manufacturing bags

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1926421A (en) * 1929-08-12 1933-09-12 Andreas Arno Method and apparatus for manufacturing paper bags
US3566754A (en) * 1967-05-22 1971-03-02 Windmoeller & Hoelscher Plant for making bags
US3556518A (en) * 1967-08-16 1971-01-19 Windmoeller & Hoelscher Apparatus for shifting a deflector in a machine for processing paper or plastics material sheeting, preferably a tube-making machine
US3580141A (en) * 1967-08-28 1971-05-25 Windmoeller & Hoelscher Apparatus for paper sacks manufacture
US3618477A (en) * 1970-04-22 1971-11-09 Continental Can Co Method of and apparatus for manufacturing bags

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991662A (en) * 1972-06-08 1976-11-16 Molins Limited Packing machines
US4007669A (en) * 1974-07-04 1977-02-15 Windmoller & Holscher Apparatus for reversing the running direction of tube sections in sack machines
US4036115A (en) * 1974-08-08 1977-07-19 St. Regis-Aci Pty. Limited Sack making equipment
FR2318788A1 (fr) * 1975-07-23 1977-02-18 Windmoeller & Hoelscher Dispositif pour former des paquets parallelepipediques de sachets avec bras de serrage montes en pince sur chariot coulissant
DE19823906A1 (de) * 1998-05-28 1999-12-16 Gretag Imaging Ag Fotomaterial-Leitanlage
DE19823906C2 (de) * 1998-05-28 2001-06-28 Gretag Imaging Ag Filmmaterial-Leitanlage
US20120108409A1 (en) * 2009-01-28 2012-05-03 Uwe Koehn Device for producing bags from hose-shaped material
EP2391502B1 (de) * 2009-01-28 2016-01-13 Windmöller & Hölscher KG Vorrichtung zur herstellung von säcken aus schlauchförmigem material
US9409370B2 (en) * 2009-01-28 2016-08-09 Windmoeller & Hoelscher Kg Device for producing bags from hose-shaped material
WO2023169873A1 (de) * 2022-03-10 2023-09-14 Winkler + Dünnebier Gmbh Vorrichtung und verfahren zur herstellung von verpackungsbehältnissen

Also Published As

Publication number Publication date
ES418617A1 (es) 1976-02-16
FR2199287A5 (it) 1974-04-05
JPS4963575A (it) 1974-06-20
GB1420046A (en) 1976-01-07
JPS5625378B2 (it) 1981-06-11
IT998412B (it) 1976-01-20

Similar Documents

Publication Publication Date Title
US4268346A (en) Apparatus for making tank top bags from a web of tubular plastics film provided with side folds
US3973373A (en) Automatic packaging method and apparatus
CA1081722A (en) Method and apparatus for forming a stream of partly overlapping paper sheets or the like
US3633731A (en) Bag wicketter
US3871270A (en) Bag-making machinery
US2278188A (en) Method of and apparatus for delivering sheets
US3650449A (en) Intermittent feeding apparatus for a web of paper or plastics material
JP3320032B2 (ja) モジュール式自動封筒挿入機械
US3823811A (en) Conveyor means for paper or plastics tube sections in the manufacture of bags
US3406611A (en) Apparatus for producing and stacking sheetlike items
US3703951A (en) Apparatus for transferring workpieces which are intended for the manufacture of bags
US3228273A (en) Sheet delivery mechanism
US3400641A (en) Apparatus for applying window material to window cutouts in the manufacture of window envelopes and the like
US3672667A (en) Apparatus for staggering blanks of sheet material
US4036115A (en) Sack making equipment
US3687447A (en) Apparatus for stacking thermoplastic bags
JPH05220831A (ja) 深絞り加工機へのシート状素材の供給装置
US3502536A (en) Mechanism for producing tear strips
US1947396A (en) Machine for making paper bags
US3650524A (en) Apparatus for and method of opening interpositioned folded sheets
US3650527A (en) Apparatus for feeding a band of overlapped blanks to a separator
US2287719A (en) Arranging and feeding envelopes or bags for gumming the flaps
US978702A (en) Box-folding machine.
US2312162A (en) Manufacture of dry-sealing envelopes
US3510378A (en) Cylinder fabricating machine