US3859894A - Bag-making machine - Google Patents

Bag-making machine Download PDF

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Publication number
US3859894A
US3859894A US419532A US41953273A US3859894A US 3859894 A US3859894 A US 3859894A US 419532 A US419532 A US 419532A US 41953273 A US41953273 A US 41953273A US 3859894 A US3859894 A US 3859894A
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US
United States
Prior art keywords
shaft
drive
propeller shaft
propeller
sleeve
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
US419532A
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English (en)
Inventor
Friedhelm Mundus
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
Original Assignee
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.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
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Publication of US3859894A publication Critical patent/US3859894A/en
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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
    • 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
    • B31B70/87—Applying handles on one side of a moving longitudinally folded web, e.g. after cutting a tubular web longitudinally; Applying handles on both sides of a moving web and folding this web longitudinally afterwards
    • 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

  • ABSTRACT In a bag-making machine, a work unit such as a han- [30] F i A li ti p i it D t die-applying station isdindtlapendently displraltceablel in two directions perpen icu ar to one anot er an is D l, 1972 ec Germany 2258925 dr1ven by a drive shaft d1sposed at a fixed locat1on, a [52] Us. CL 93/8 W A 64/6 64/17 propeller shaft having length compensating means 4/23 93/8 connecting the drive shaft to a power input shaft for 51 1m.
  • a work unit such as a han- [30] F i A li ti p i it D t die-applying station isdindtlapendently displraltceablel in two directions perpen icu ar to one anot er an is D l, 1972 ec Germany 2258925 d
  • Field of Search 93/35 H 8 WA 8 is in the form of a centilever-mounted hollow shaft 64/1C 6 connected to the propeller shaft by a joint which is pivoted to an annular flange attached to the hollow [56] References Cited shaft and which is also pivoted to a sleeve, the propeller shaft passing through the centrally free joint and UNITED STATES PATENTS through the hollow shaft, said sleeve making a positive Warper X rotary drive to propeller but 64/23 X being longitudinally displaceable thereon.
  • the invention relates to a machine for making bags or sacks, particularly carrier bags, from heat-scalable material, comprising a work unit, for example a handleapplying station for the bags, which unit is independently displaceable in two directions perpendicular to one another and is driven by a drive shaft disposed at a fixed location, a power input shaft for the work unit, and a propeller shaft connecting said input and drive shafts by respective joints located adjacent the input and drive shafts, the propeller shaft being provided with length compensating means.
  • a work unit for example a handleapplying station for the bags, which unit is independently displaceable in two directions perpendicular to one another and is driven by a drive shaft disposed at a fixed location, a power input shaft for the work unit, and a propeller shaft connecting said input and drive shafts by respective joints located adjacent the input and drive shafts, the propeller shaft being provided with length compensating means.
  • a characteristic datum for example the centre line of the welding jaw for the handle in the case of a handleapplying station, must be at a very special spacing from a fold line in the bag material, namely a distance equal to the desired depth of the bags being made.
  • the handles would be welded on either too far down the bag, in which case the upwardly projecting bag material would interfere with a good grip being obtained on the handles by the user, or too high up the bag, in which case there might be insufficient bag material to which to weld the handles, or the handles might miss the bag material altogether. Accordingly, the fluctuations in the dimensions of the bag material must be compensated by changing the transverse positions of the tools effecting the application of the handles. However, since the units for folding the bag material are rigidly build into the machine and not adjustable during operation, fluctuations in the depth of the bags are compensated by adjusting the position of the handleapplying station in a direction transversely of the machine. To make this possible, the mounting and the drive means for the handle-applying station must be movable, in extreme cases up to about 50 to mm.
  • a cardan shaft provided with length compensating means can be used to transmit mechanical power from a fixed point to one of which the posi tion is variable in two directions.
  • A. prerequisite for this is that the extent of displacement of the movable point relatively to the fixed point in a direction lengthwise of the cardan shaft be considerably smaller than the smallest possible distance between the two joints of the cardan shaft or, when the movable point is closest to the fixed point, the two points be spaced apart at a distance larger than the smallest retracted length of the cardan shaft.
  • the aim of the invention is to provide a drive arrangement for the aforementioned case in which the movable point that is to be supplied with mechanical power moves within considerably larger limits than those determined by the closest spacing of the movable point relatively to the fixed point, so that the bagmaking machine need not be unnecessarily long, i.e., there can be a small spacing between the work unit and the drive shaft.
  • a machine for making sacks or bags for heat-scalable material comprises a work unit which is independently displaceable in two directions perpendicular to one another and is driven by a drive shaft disposed at a fixed location, a power input shaft for the work unit, and a propeller shaft connecting said input and drive shafts by respective joints located adjacent the input and drive shafts, the propel.- ler shaft being provided with length compensating means, wherein the input shaft or the drive shaft is in the form of a cantilever-mounted hollow shaft and the associated joint is a centrally free joint comprising a ring, particularly the pivot ring of a universal joint, which ring is pivoted to an annular flange attached to the hollow shaft and which is also pivoted to a sleeve, said propeller shaft passing through the centrally free joint and through the hollow shaft, said sleeve making a positive rotary drive connection to the propeller shaft but being longitudinally displaceable thereon.
  • the central portion of the propeller shaft which may be splined, may be as long as required (within the limits set by any problems that may arise through oscillations) and its entire length may be utilized for displacing the movable point. More particularly, the movable point can be brought very close to the fixed point of the power supply.
  • FIG, 1 is a diagrammatic fragmentary plan view of a bagmaking machine
  • FIG. 2 is an enlarged sectional view of the portion encircled at A in FIG. 1.
  • a drive motor 1 operates through gearing 2 to turn a drive shaft 3 which is at a fixed location.
  • the drive shaft 3 terminates at a power supply point 4 comprising a universal joint 5.
  • the kinematic point of the universal joint 5 is designated 6.
  • the longitudinal centre line of the drive shaft 3 intersects that of a propeller shaft 7 of which substantially all the central portion is provided with a splined profile.
  • a welding bar 9 having a longitudinal centre line 10 serves to apply transverse weld seams to bag material 19 which is fed in the direction of the arrow a and comprises a two-ply web containing fold lines adjacent the edge 18.
  • a handle-applying station 11 having a longitudinal centre line 14 is operated in synchronism with the machine cycle to weld handles at predetermined intervals to the web 19.
  • the handle-applying station comprises a welding jaw 12 which has a longitudinal centre line 13 and is reciprocatable in the direction of the arrow a and back again in synchronism with the machine cycle.
  • the transverse centre line of the welding jaw 12 coincides with the longitudinal centre line 14 of the handleapplying station.
  • the latter includes a hopper 34 for injection-moulded handles.
  • the handle-applying station 11 is displaceable, as shown in broken lines, in a direction parallel to the web movement a through a distance L and, independently thereof, in a transverse direction through the distance Q.
  • a universal joint having a kinematic point 15 and to be described more fully hereinafter.
  • the inclination of the central portion 7 of the propeller shaft relatively to the drive shaft 3 and a power input shaft 21 (FIG. 2) of the station 11 is limited between the positions shown at 16 and 17 in chain-dotted lines in FIG. 1. Accordingly, the station 11 is not freely displaceable within a rectangle having the dimensions Q and L but within a hexagon that is shown by the crosshatching in FIG. 1.
  • the transverse centre line 14 of the welding jaw 12 of the handle-applying station is set to a spacing D from the centre line 10 of the welding bar 9, this spacing being equal to 1 /2 times the width B of the carrier bags to be made.
  • the longitudinal centre line 13 of the jaw 12 is set at a spacing T from the lower folded edge 18 of the web 19 equal to the desired depth of the bags to be made.
  • any fluctuation can be com pensated only by changing the transverse position of the station 11 with a view to keeping a constant spacing S between the top edges of the web 19 and a weld seam by which the handles are secured to the web 19.
  • FIG. 2 a wall 20 of the handle-applying station is cast in one piece with a bearing sleeve which permits cantilever mounting of the aforementioned input shaft 21, which is hollow.
  • the shaft 21 is quite short, roller bearings are used to support only its right-hand end.
  • the shaft 21 On the left-hand side, the shaft 21 carries a pinion 23 which engages a drive gear 24 of the handle-applying station.
  • the input shaft 21 is connected to the central portion 7 of the propeller shaft by a universal joint 25 having the aforementioned kinematic point 15.
  • the universal joint 25 is centrally free, i.e., a shaft may be pushed through the centre of the joint. This central freedom is obtained by means of a pivot ring 26 carrying four radially inwardly projecting pivots 27 which are equally spaced circumferentially of the ring.
  • the upper half of the joint 25 shown in cross-section in FIG. 2 should be imagined as being turned through relatively to the lower half.
  • Each pair of opposed pivots 27 provides a pivotal connection to a respective bifurcated member 28 or 29 containing complementary bearing sleeves.
  • One of the bifurcated members by a sleeve 30 which is axially displaceable on the central portion 7 of the propeller shaft and the other bifurcated member (29) is connected to the power input shaft 21 by means of an annular flange 31.
  • the sleeve 30 is displaceable along the propeller shaft within very wide limits determined by the unsupported length of the propeller shaft portion 7 (which could give rise to oscillations at high speeds).
  • the bearing sleeve on the wall 20 is connected to a bellows-like cover 32 which carries a sealing ring 33 for engaging the splines of the propeller shaft but permitting rotation of the shaft relatively to the cover.
  • a machine for making sacks or bags from heatsealable material comprising a work unit which is independently displaceable in two directions perpendicular to one another and is driven by a drive shaft disposed at a fixed location, a power input shaft for the work unit, and a propeller shaft connecting said input and drive shafts by respective joints located adjacent the input and drive shafts, the propeller shaft being provided with length compensating means, wherein the input shaft or the drive shaft is in the form of a cantilever-mounted hollow shaft and the associated joint is a centrally free joint comprising a ring which is pivoted to an annular flange attached to the hollow shaft and which is also pivoted to a sleeve, said propeller shaft passing through the centrally free joint and through the hollow shaft, said sleeve making a positive rotary drive connection to the propeller shaft but being longitudinally displaceable thereon.

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  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US419532A 1972-12-01 1973-11-28 Bag-making machine Expired - Lifetime US3859894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722258925 DE2258925A1 (de) 1972-12-01 1972-12-01 Maschine zum herstellen von beuteln oder saecken, insbesondere, tragebeuteln, aus heissiegelfaehigem material

Publications (1)

Publication Number Publication Date
US3859894A true US3859894A (en) 1975-01-14

Family

ID=5863275

Family Applications (1)

Application Number Title Priority Date Filing Date
US419532A Expired - Lifetime US3859894A (en) 1972-12-01 1973-11-28 Bag-making machine

Country Status (8)

Country Link
US (1) US3859894A (it)
JP (1) JPS4987483A (it)
BE (1) BE808073A (it)
DE (1) DE2258925A1 (it)
FR (1) FR2209321A5 (it)
GB (1) GB1427558A (it)
IT (1) IT1002020B (it)
NL (1) NL7316324A (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704100A (en) * 1986-08-11 1987-11-03 Aaron Kaufman Bag making apparatus and method
US5525112A (en) * 1993-12-06 1996-06-11 Dana Corporation Combined seal and boot for steering shaft assembly
CN108189482A (zh) * 2017-12-29 2018-06-22 山东新华医疗器械股份有限公司 一种血袋制袋机及其旋转上管装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923649A (en) * 1932-10-31 1933-08-22 Universal Products Co Inc Power transmitting mechanism
US2761295A (en) * 1955-10-04 1956-09-04 Davis C Edward Transmission dirt shield
US2800004A (en) * 1953-01-19 1957-07-23 Schroter Kurt Multipart articulated shaft, particularly for agricultural machinery, which is variable in length during service and provided with a safety catch
US3156206A (en) * 1961-07-25 1964-11-10 William O Hall Method of applying handles to a series of bags
US3698289A (en) * 1969-08-28 1972-10-17 Ctp Ind Inc Apparatus for automatic manufacture of handle bags
US3773591A (en) * 1971-02-01 1973-11-20 Coloroll Ltd Manufacture of carrier bags
US3810811A (en) * 1970-06-24 1974-05-14 Windmoeller & Hoelscher Apparatus for making carrier bags having plastic handles attached to the mouths thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923649A (en) * 1932-10-31 1933-08-22 Universal Products Co Inc Power transmitting mechanism
US2800004A (en) * 1953-01-19 1957-07-23 Schroter Kurt Multipart articulated shaft, particularly for agricultural machinery, which is variable in length during service and provided with a safety catch
US2761295A (en) * 1955-10-04 1956-09-04 Davis C Edward Transmission dirt shield
US3156206A (en) * 1961-07-25 1964-11-10 William O Hall Method of applying handles to a series of bags
US3698289A (en) * 1969-08-28 1972-10-17 Ctp Ind Inc Apparatus for automatic manufacture of handle bags
US3810811A (en) * 1970-06-24 1974-05-14 Windmoeller & Hoelscher Apparatus for making carrier bags having plastic handles attached to the mouths thereof
US3773591A (en) * 1971-02-01 1973-11-20 Coloroll Ltd Manufacture of carrier bags

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4704100A (en) * 1986-08-11 1987-11-03 Aaron Kaufman Bag making apparatus and method
US5525112A (en) * 1993-12-06 1996-06-11 Dana Corporation Combined seal and boot for steering shaft assembly
CN108189482A (zh) * 2017-12-29 2018-06-22 山东新华医疗器械股份有限公司 一种血袋制袋机及其旋转上管装置

Also Published As

Publication number Publication date
NL7316324A (it) 1974-06-05
FR2209321A5 (it) 1974-06-28
GB1427558A (en) 1976-03-10
JPS4987483A (it) 1974-08-21
BE808073A (fr) 1974-03-15
DE2258925A1 (de) 1974-06-06
IT1002020B (it) 1976-05-20

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