US3590696A - Machine for making carrying bags having u-shaped carrying handles - Google Patents

Machine for making carrying bags having u-shaped carrying handles Download PDF

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Publication number
US3590696A
US3590696A US812227A US3590696DA US3590696A US 3590696 A US3590696 A US 3590696A US 812227 A US812227 A US 812227A US 3590696D A US3590696D A US 3590696DA US 3590696 A US3590696 A US 3590696A
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US
United States
Prior art keywords
strip
carrying
machine
maltese cross
needles
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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
US812227A
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English (en)
Inventor
Herbert Kurt Reissner
Friedhelm Brinkmeier
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.)
Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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.)
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
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Publication of US3590696A publication Critical patent/US3590696A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B31B70/74—Auxiliary operations
    • B31B70/86—Forming integral handles or mounting separate handles
    • B31B70/864—Mounting separate handles on bags, sheets or webs
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents

Definitions

  • the machine serves to make carrying bags consisting of paper or plastics material and having carrying handles, which are formed by strips folded into U-shape and ad hered t0 the sidewalls of the bags.
  • Each of the continuously rotating working cylinders used to fold and adhere the carrying handles is preceded by a strip transfer device for transferring the handle blanks which have been supplied in a direction which is parallel to axis of the working cylinder.
  • the strip transfer devices each comprise a rotary transfer tool having a' plurality of strip-receiving stations, which have a regular angular spacing.
  • the tool is arranged to be driven by drive means comprising a Maltese cross movement having slots equal in number to the strip-receiving stations and comprising a cam carrying a striker pin for each slot.
  • the striker pins have a regular angular spacing.
  • the Maltese cross movement is driven at such a speed that the maximum velocity of the transfer tool corresponds to the maximum velocity of the working cylinder.
  • This invention relates to a machine for making carrying bags consisting of paper or plastic material and having carrying handles, which are formed by strips folded into U-shape and adhered to the sidewalls of the bags.
  • each of the eontinuously rotating working cylinders used to fold and adhere the carrying handles is preceded by a strip transfer device for transferring the handle blanks which have been supplied in a direction which is parallel to the axis of the working cylinder.
  • the US. Pat. No. 3,034,409 assigned to the same assignee as the present invention discloses a machine which serves to manufacture carrying bags and to apply carrying handles thereto, in which machine the striplike blanks for the carrying handles are also supplied to the working cylinder in a direction which is parallel to the axis of the latter.
  • an arresting member which is movable up and down, the carrying handle blank is arrested in a certain position so that the transfer device can receive the arrested strip and can deliver it to the rotating cylinder.
  • the arrested strip is pierced by, e.g,, three needles, which are secured to levers which are pivotally movable substantially at right angles to the plane of the strip.
  • the pivotal movement of the levers imparting the piercing and subsequent withdrawal movements to the needles into and out of the strip is controlled by a cam wheel, a follower roller and another lever.
  • Said two levers are pivoted in third levers, to which two additional levers are connected, which are controlled by a cam and impart an oscillating pivotal movement under the control of a cam to said third levers so-t'hat the same during their forward stroke toward the cylinder transfer the strip to the cylinder, where the strip is gripped by grippers of the cylinder.
  • This apparatus is cyclically driven and is synchronized with the revolution of the cylinder.
  • the apparatus which has been previously described operates satisfactorily at low and intermediate speeds of opetation whereas the higher machine outputs which an enabled by technical development result in disturbances in this apparatus.
  • the speed of operation of the apparatus is limited by the fact that each cycle comprises an idle stroke to return the needle and this idle stroke must be performed within the shortest time possible.
  • the oscillating pivotal movement of the considerable masses to be accelerated and retarded result in the occurrence of considerable forces in the machine which are due to inertia and may result in deleterious vibration and possibly in damage to the machine parts and in any case in a rapid wear.
  • the strip transfer devices each comprise a rotary transfer tool having a plurality of strip-receiving stations, which have a regular angular spacing.
  • the tool is arranged to be driven by drive means comprising a Maltese cross movement having slots equal in number to the strip-receiving stations and comprising a cam carrying a striker pin for each slot, said striker pins having a regular angular spacing and the Maltese cross movement being driven at such a speed that the maximum velocity of the transfer tool corresponds to the peripheral velocity of the working cylinder.
  • the transfer tool performs in each cycle only the working stroke which is required and there is no longer a need for an idle stroke.
  • the oscillating motion of the know transfer tool is replaced by a rotation in one and the same sense.
  • the receiving stations are preferably provided with such needles and are arrested at the beginning of the cycle and are accelerated to the velocity of the working cylinder later in the working cycle.
  • the known characteristic of a Maltese cross movement is utilized, in which the angular velocity during each step varies like a sine curve from zero to a maximum and back to zero.
  • the Maltese cross attains its maximum angular velocity exactly after one-half step.
  • a cam provided with four striker pins may cooperate with a Maltese cross having slots in the form of four radially extending grooves. Simple manufacture is enabled in that the grooves cross each other. It will also be desirable if the striker pins carry rollers, which engage the slots of the Maltese cross.
  • the receiving stations may be provided with needles for piercing the carrying handle blanks.
  • the transfer tool comprises two spiders which are spaced apart and mounted on the Maltese cross-shaft for rotation therewith.
  • the needles are carried by shafts, which are parallel to the Maltese cross-shaft and rotatably mounted at the spider arm ends and provided each at one end with a crank, which is guided in a cam groove, which causes the needles to perform a piercing movement in the receiving zone and a withdrawal movement in the delivery zone and which is movable in step with the machine cycle.
  • the cam groove must be movable because the needles are arrested for a short time in the receiving zone and a piercing movement could not be initiated by a stationary cam.
  • the cooperation of the cyclically moved cam groove and of the cranks can impart the required movement to the needles while the transfer tool is arrested.
  • a disc which is formed with the cam groove on one end face may be pivotally movable about the axis of the transfer tool by means ofa link, which is eccentrically pivoted to the disc and which is pivoted atits other end on an eccentric, which is secured to a shaft which rotates in step with the machine cycle, e.g. to the shaft carrying the cutters for scoring the strip.
  • the eccentric performs one revolution during each cycle so that the cam groove performs a pivotal movement during each cycle.
  • This pivotal movement is so matched to the cycle of the machine that the cam groove moves at its highest velocity in a sense of rotation which is opposite to that of the Maltese cross shaft when the needles are arrested in the receiving zone so that the needles perform their piercing movement under the control of the cam.
  • the pivotal movement of the cam is retarded to a standstill and the cam is then reversed.
  • a maximum velocity will be attained at a predetermined point. In this region, the needles also attain their maximum velocity, at which they are withdrawn from the strip.
  • the strip which has been transferred to the working cylinder is then moved through a scoring station and is subsequently shaped to form a carrying handle in a folding station.
  • the finished carrying handle has glue applied to it in normal manner and is applied to the web or a bag.
  • FIG. 1 is a side elevation showing the transfer device according to the invention in a first operating position
  • FIG. 2 is a sectional view taken on line Il-II of FIG. I.
  • FIG.3 is a side elevation similar to that of FIG. 1 and showing the device according to the invention in a second operat ing position.
  • the carrying handle-applying station of a machine for making carrying bags is provided with two similar devices according to the invention.
  • Each of the devices serves to move one of the two carrying handles required for a carrying bag to a respective working cylinder. Only one of the two devices will be explained hereinafter.
  • the strip-shaped carrying handle blank 1 shown in section in FIG. 1 is moved at right angles to the plane of FIG. 1 to the folding cylinder 2 and by a clamping device, not shown, is arrested in a predetermined position.
  • the arrested strip 1 is now pierced by, e.g., two needles 3 and 4 (see also FIG. 2), which are mounted on the periphery ofa needle carrier 5.
  • the needle carrier 5 carries four pairs of needles and comprises two spaced-apart four-arm spiders 6 and 7, which are firmly connected by a common hub 8 to a shaft 11, which is rotatably mounted in the side frames 9 and I0 of the machine.
  • Shafts 14 are rotatably mounted in the ends of respective pairs of opposite levers l2 and 13.
  • Each shaft 14 carries two levers 15 and 16, which are provided with the needles 3 and 4, respectively.
  • Another lever 17 is secured to the end of each of shafts l4 and at its end carries two rollers 18 and 19, which roll on a cam 20 for controlling the piercing and withdrawal movement of the needles 3 and 4.
  • the feed movement is imparted to the needles 3 and 4 by a Maltese cross 21, which forms part of a Maltese cross movement and is secured to one end of the shaft 11 carrying the needle-carrying cylinder 5.
  • the Maltese cross 21 has the form of a cross, which has four arms and is formed on its end face with corresponding grooves 22, which receive the corresponding striker pins 23-26 in accordance with the position of the Maltese cross.
  • the pins 23-26 are provided with rollers and are mounted on the end face of the cam 27, which consists of a gear and is rotatably mounted on a pin 28, which is secured to the side frame 9 of the machine. Motion is transmitted to the cam 27 from the cyclical main drive means of the machine by means of a multiple gear 31 consisting of gears 29 and 30.
  • the gear 29 is in mesh with the cam 27 and the gear 30 is in mesh with a gear (not shown) of the main drive means.
  • the multiple gear 31 is secured to a shaft 32, which is rotatably mounted in the side frames 9 and 10 of the machine and which carries the scoring knives 33 and 34'. ofthe strip-scoring station 35 cooperating with the folding cylinder
  • the strip 1 which has been arrested in the receiving zone 36 (FIG.
  • the strip 1 can be received only when the Maltese cross 21 and the needles 3 and 4 are momentarily arrested. To accomplish this momentary arrest, the cam 27 is adjusted so that one striker pin, e.g., 26, is disengaged and the succeeding striker pin, e.g., 23, just begins to engage the Maltese cross when the needles 3 and 4 are in the receiving zone 36.
  • the rotation of the Maltese cross 21 is interrupted exactly in that position of the cam 27 because at that time the striker pins 23 and 26 move parallel to the longitu dinal direction of the corresponding grooves 22. When the Maltese cross 21 is thus arrested, a stationary cam could not initiate a piercing movement.
  • the cam 20 which controls the piercing and withdrawal movements is pivoted on a hub 37, which is secured to the side frame 9 (FIG. 2) of the machine.
  • the arrangement of the hub 37 is such that the axis of rotation of the cam 20 coincides with the axis of rotation of the shaft 11.
  • the cam 20 consists of a milled groove on the end face of a cylindrical disc 38.
  • a pivotal movement is imparted to the cam 20 (FIGS. land 2) by an eccentric 39, which is secured to the shaft 32 and to which one end of a link 40 is pivoted.
  • the other end of the link 40 is pivoted to the disc 38.
  • a rotation of the eccentric 39 imparts a reciprocating motion to the link 40 so that the cam 20 performs a pivotal movement.
  • the pivotal movement of the cam 20 is so matched to the cycle of the machine that the cam is just moving at its maximum velocity in a sense which is opposite to the sense of rotation 41 of the shaft 11 when the latter is arrested (FIG. 1)
  • This operation causes an instantaneous piercing movement of the needles 3 and 4 under the control of the cam 20.
  • the strip 1 held by the needles is accelerated in the direction of rotation 41 until it reaches the velocity of the folding cylinder 2 in the delivery zone 42 (FIG. 3).
  • the strip 1 is now removed from the needles 3 and 4 by a gripper 43, which is carried by the folding cylinder 2, and the needles 3 and 4 perform a withdrawal movement at the same time under the control of the pivoted cam 20, which has been reversed and is now moving in the same sense as the Maltese cross 21.
  • the rollers 18 and 19 rolling on the cam 20 have a much higher velocity than the cam 20 so that the differential velocity required to drive the needles is obtained.
  • the strip continues to advance, it is held on the folding cylinder and in the scoring station 35 (FIG. 1 and 3) is provided with score lines at 45 for the subsequent folding operation and is then supplied to a folding station.
  • a machine for making carrying bags having carrying handles which are formed by strips folded into a U-shape and adhered to the sidewalls of the bags, said machine comprising continuously rotating working cylinders to fold and adhere the carrying handles with each of said continuously rotating working cylinders being preceded by a strip transfer device for transferring handle blanks which have been supplied in a direction parallel to the axis of the working cylinder, the striptransfer device comprising a rotary transfer tool having a plurality of strip-receiving stations arranged at a regular angular spacing, said rotary transfer tool being arranged to be driven by drive means, said drive means comprising a Maltese cross drive having slots equal in number to said strip-receiving stations and a driver carrying a drive pin for each slot, said slots comprising two grooves formed on one end face of said Maltese cross drive and crossing at right angles, said drive pins having a regular angular spacing corresponding to that of said slots and said strip-receiving stations, said Maltese cross drive being adapted to
  • a machine wherein the strip-receiving stations are provided with needles for piercing the carrying handle blanks.
  • the transfer tool comprises two spiders, which are spaced apart and mounted on a Maltese cross shaft for rotation therewith, said needles 5.
  • the cam groove is formed on one end face of a disc which is pivotally movable by a link, said link having one end eccentrically pivoted to the disc and its other end pivoted to an eccentric which is secured to a shaft which rotates in step with the machine cycle.

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  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US812227A 1968-05-27 1969-04-01 Machine for making carrying bags having u-shaped carrying handles Expired - Lifetime US3590696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681761492 DE1761492B1 (de) 1968-05-27 1968-05-27 Vorrichtung zum UEbergeben von Materialstreifen an einen kontinuierlich umlaufenden Arbeitszylinder zum U-foermigen Falten und Aufkleben der Traggriffe in einer Tragtaschenmaschine

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US3590696A true US3590696A (en) 1971-07-06

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US812227A Expired - Lifetime US3590696A (en) 1968-05-27 1969-04-01 Machine for making carrying bags having u-shaped carrying handles

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US (1) US3590696A (de)
DE (1) DE1761492B1 (de)
FR (1) FR2009373A1 (de)
SE (1) SE345824B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790804A (en) * 1986-02-07 1988-12-13 Newlong Machine Works, Ltd. Bag manufacturing apparatus
US5816993A (en) * 1996-01-22 1998-10-06 Stone Container Corporation Apparatus and method for attaching carrying handles to bags
US6059709A (en) * 1997-01-22 2000-05-09 Windmoller & Holscher Process for producing bags with folded over and secured handles by a fold-over rod extending at a right angle to the direction of transport
US8764618B2 (en) 2011-01-27 2014-07-01 Duro Bag Manufacturing Company Clampless bar mechanism for a paper bag bottoming mechanism

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060451A (en) * 1935-07-27 1936-11-10 Harford K Steen Method of making handled shopping bags
US2076680A (en) * 1935-07-27 1937-04-13 Harford K Steen Shopping bag
US2108148A (en) * 1935-12-05 1938-02-15 Harford K Steen Method of making handled shopping bags
US2689506A (en) * 1950-04-20 1954-09-21 Bagnall John Allan Handle attaching apparatus
US2775171A (en) * 1951-06-11 1956-12-25 Interstate Bag Company Method and machine for bag making
US2952396A (en) * 1957-08-06 1960-09-13 Interstate Bag Company Inc Shopping bag
US3034409A (en) * 1958-05-14 1962-05-15 Finke Arno Method and apparatus for producing and applying bag handles
DE1181035B (de) * 1960-09-22 1964-11-05 Windmoeller & Hoelscher Verfahren und Vorrichtung zum Herstellen von Tragtaschen aus Beuteln und U-foermigen Traggriffen aus Papier od. dgl.
US3334550A (en) * 1964-07-23 1967-08-08 Crown Zellerbach Corp Apparatus for and method of making handles and applying same to a bag
US3439591A (en) * 1965-09-23 1969-04-22 Holweg Const Mec Process and machine for the manufacture of bags having attached handles
US3464325A (en) * 1967-02-10 1969-09-02 Holweg Const Mec Manufacture of paper and like bags with attached flat handles
US3494264A (en) * 1966-10-21 1970-02-10 Holweg Const Mec Manufacture of paper and like bags with attached flat handles

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060451A (en) * 1935-07-27 1936-11-10 Harford K Steen Method of making handled shopping bags
US2076680A (en) * 1935-07-27 1937-04-13 Harford K Steen Shopping bag
US2108148A (en) * 1935-12-05 1938-02-15 Harford K Steen Method of making handled shopping bags
US2689506A (en) * 1950-04-20 1954-09-21 Bagnall John Allan Handle attaching apparatus
US2775171A (en) * 1951-06-11 1956-12-25 Interstate Bag Company Method and machine for bag making
US2952396A (en) * 1957-08-06 1960-09-13 Interstate Bag Company Inc Shopping bag
US3034409A (en) * 1958-05-14 1962-05-15 Finke Arno Method and apparatus for producing and applying bag handles
DE1181035B (de) * 1960-09-22 1964-11-05 Windmoeller & Hoelscher Verfahren und Vorrichtung zum Herstellen von Tragtaschen aus Beuteln und U-foermigen Traggriffen aus Papier od. dgl.
US3334550A (en) * 1964-07-23 1967-08-08 Crown Zellerbach Corp Apparatus for and method of making handles and applying same to a bag
US3439591A (en) * 1965-09-23 1969-04-22 Holweg Const Mec Process and machine for the manufacture of bags having attached handles
US3494264A (en) * 1966-10-21 1970-02-10 Holweg Const Mec Manufacture of paper and like bags with attached flat handles
US3464325A (en) * 1967-02-10 1969-09-02 Holweg Const Mec Manufacture of paper and like bags with attached flat handles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790804A (en) * 1986-02-07 1988-12-13 Newlong Machine Works, Ltd. Bag manufacturing apparatus
US5816993A (en) * 1996-01-22 1998-10-06 Stone Container Corporation Apparatus and method for attaching carrying handles to bags
US6059709A (en) * 1997-01-22 2000-05-09 Windmoller & Holscher Process for producing bags with folded over and secured handles by a fold-over rod extending at a right angle to the direction of transport
US8764618B2 (en) 2011-01-27 2014-07-01 Duro Bag Manufacturing Company Clampless bar mechanism for a paper bag bottoming mechanism

Also Published As

Publication number Publication date
SE345824B (de) 1972-06-12
DE1761492B1 (de) 1971-08-12
FR2009373A1 (de) 1970-02-06

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