EP0228541A1 - Machine pour fermer des sacs remplis - Google Patents

Machine pour fermer des sacs remplis Download PDF

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Publication number
EP0228541A1
EP0228541A1 EP86115492A EP86115492A EP0228541A1 EP 0228541 A1 EP0228541 A1 EP 0228541A1 EP 86115492 A EP86115492 A EP 86115492A EP 86115492 A EP86115492 A EP 86115492A EP 0228541 A1 EP0228541 A1 EP 0228541A1
Authority
EP
European Patent Office
Prior art keywords
rollers
frame
roller
opening edges
closing
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
EP86115492A
Other languages
German (de)
English (en)
Other versions
EP0228541B1 (fr
Inventor
Konrad Tetenborg
Heinz Eschmann
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
Publication of EP0228541A1 publication Critical patent/EP0228541A1/fr
Application granted granted Critical
Publication of EP0228541B1 publication Critical patent/EP0228541B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/07—Sewing or stitching
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap

Definitions

  • the invention relates to a device for closing filled sacks, which are transferred by a conveyor from the filling station to a closing station, with a gripping device which clamps the opening edges of the filled sacks in a pincer-like manner with a pair of rollers rotatable about axes perpendicular to the main axis of the sack and with one the gripping device protruding, flat stacked opening edges by a seam closing closing device.
  • the closing device consists of swiveling, jaw-like, interacting welding jaws which close the opening edges lying flat on one another by a head weld seam.
  • a bracket is pivotally attached to each of the two arms, each carrying a welding jaw, which carries a pressure roller.
  • the pressure roller pivots against the action of a spring from a position remote from the welding jaw to a position adjacent to the welding jaw, so that air is squeezed out of the sack during the transition between these two positions and the spread opening edges are placed against one another and in this position are held until the welding jaws hit.
  • a drum-like feed device rotating about a horizontal axis is provided, which is provided in pairs with eight gripper tongs distributed over the circumference, which form tongs-like gripper devices.
  • the feed device sets the filled sacks down on a conveyor belt, the tabs of the opening edges projecting beyond the gripping tongs assume a horizontal position in the setting position, so that they close the sacks between the jaws of a welding device Cross weld seam can be provided.
  • the flattened opening edges of plastic sacks or plastic-coated sacks can be closed by transverse weld seams if the flags formed by the opening edges lying one above the other protrude beyond the gripper tongs by a sufficiently large length. Difficulties arise, however, if the lengths of the flags are too small or if the sacks are to be closed by sewing seams for which longer flag lengths are required.
  • the object of the invention is therefore to provide a device of the type specified at the outset, which can also be attached of welded seams and in particular also of seamed seams forms sufficiently long flag lengths of the opening edges lying one on top of the other if the gripping devices holding the bags during the filling do not allow such flag lengths and / or an immediately subsequent closing of the bags by welding or sewing seams.
  • this object is achieved in a device of the generic type in that at least one of the rollers (7, 8) of the gripping device forming a pair of preferred rollers can be driven.
  • the opening edges of the filled sacks are clamped between the preferred rollers or the pair of preferred rollers takes over the opening edges lying one on top of the other from the gripping device holding the sacks during filling.
  • the drive of the pair of feed rollers is actuated so that the opening edges lying one above the other over the feed roller pair by a flag length so large that a transverse weld seam or, if desired, a sewing seam can be made.
  • the device according to the invention can also be used to create such a large flag length that it can be folded over or rolled up before a sewing seam is attached.
  • rollers are expediently mounted on a slide which can be moved on guides in the frame parallel to the conveying device and is provided with a drive. If the conveyor consists of a carousel, the feed rollers can be stored in it.
  • the outer surface of at least one conveyor roller is expediently designed to be elastic, so that there is no blocking if there is between the opening edges or between this and a roller filling material, such as granules, should be.
  • At least one conveyor roller can have areas of different diameters over its length corresponding to the cross section of the flag to be preferred. For example, in the case of gusseted bags, such a gradation of the diameter of at least one conveyor roller is expedient since the opening edges are then pressed together over their entire length.
  • At least one of the two conveyor rollers can consist of sub-rollers which are mounted on the same axis and are spaced apart from one another and which only act laterally on the sack.
  • one of the preferred rollers is provided with a freewheel which blocks the reverse rotation of the roller. The freewheel then prevents the upstanding sack edge from being pulled down again due to the material tension.
  • the rollers can be arranged one above the other in a vertical plane in order to take over the flag formed by the opening edges lying flat on one another in a horizontal plane, wherein a device is provided for pivoting the rollers into a horizontal plane below the closing station.
  • the lower roller in the takeover position is rotatably mounted in the carriage and the upper roller is freely rotatably mounted in a frame which is pivotable about the axis of the lower roller such that a lever is clamped onto the shaft of the lower roller is, which is connected to the frame via a coupling rod in such a way that the roller casing, which is firmly connected to the shaft, holds the flag of the opening edges locked between the rollers during transport in the welding or sewing position
  • the upper roller in slot guides of the legs of the frame can be lifted by a pressure medium piston-cylinder unit and pressed against the other roller, and that the frame is connected to the frame by a coupling rod in such a way that it is in the process is swiveled into a horizontal position with the carriage in the welding or sewing position.
  • FIG. 1 shows a filling station 1 and a drum-shaped feed device 3 rotating about the horizontal transverse axis 2 with eight gripper tongs 4 distributed in pairs over the circumference shown, which are designed in the manner described in DE-PS 26 29 065, so that a detailed description is omitted here.
  • the pair of gripper tongs 4 arranged laterally on the drum-shaped feed device 3 place the filled sack 5 on the feeding end of the belt conveyor 6, the flattened opening edge of the sack 5 being held horizontally by the gripper tongs 4 with a protruding flag.
  • the clamping jaws of the second gripping device of the sewing device consisting of rollers 7, 8, take over the flattened opening edges and clamp them firmly on the outer flags between them.
  • the carriage carrying the clamping rollers 7, 8 is then moved together with the bag 5 transported on the conveyor belt 6 into the sewing position 10.
  • the pinch rollers 7, 8 pivot together about the axis of the lower roller 8, so that in the sewing position 10 the flattened opening edge is vertical in the manner shown.
  • the lower pinch roller 8 performs a rotary movement during this transport, so that the flattened opening edge is advanced by the pinch rollers 7, 8, forming a pair of transport rollers, to the extent that the edge strip of the opening edge is long enough to close the opening edges with the sewing machine 11 Seam to be carried out, the opening edges can be folded or rolled and the sewing seam is carried out through the folded or rolled area.
  • the conveyor belt 6 is provided in the manner shown with brackets 12 which support the bags 5 and hold them in their vertical position during transport.
  • the carriage supporting the clamping rollers 7, 8 can be moved on guide rails in synchronism with the bags 5 from the depositing position of the bags into the sewing position.
  • a spindle 1 4 driven by the motor 13 is provided for moving the slide.
  • the bags 5 closed by sewing seams are thrown onto the subsequent conveyor belt 15 and transported away.
  • the slide consists of a frame formed by a triangular-shaped carrier, which is connected via support plates 18 to sliding bushes, not shown, which are guided on mutually parallel guide rods 19.
  • the horizontal cross member 20 of the frame 17 is screwed at the end in a fork shape with bearing plates 21 which are provided with bearing bores in which the shaft journals 22 of the clamping roller 7 are rotatably mounted.
  • the lateral legs 23 of a bow-shaped frame 24 are clamped onto the outer ends of the shaft journals 22, so that the latter can be pivoted about the longitudinal axis of the clamping roller 7.
  • the side legs 23 of the bow-shaped frame 24 are provided with elongated holes 25, in which the shaft journals 26 of the upper clamping roller 8 are slidably guided.
  • the shaft journals 26 are connected to the piston rods 27 of pneumatic cylinders 28, which in turn are fastened in the bow-shaped frame 24 in the manner shown.
  • the clamping roller 8 can be moved against the clamping roller 7 by means of the pneumatic cylinder 28 and can be lifted off the latter.
  • the pinch roller 8 has a jacket which is freely rotatable relative to the journal 26 connected to the piston rods 27.
  • the upper angled arm 30 of an angle lever 31 is clamped, which is articulated with the end of its longer arm in the joint 33 with the coupling rod 34, which is pivotably mounted in the joint 35 in the machine frame 36.
  • the shorter arm 30 of the angle lever 31 can be seen in plan view in FIG. 4.
  • the longer, downward-pointing arm of the angle lever 31 is in cross section in FIG. 4 recognizable and indicated by a full line and a dashed line.
  • the joint 33 is only indicated in FIG. 4 by a dash-dotted line.
  • the coupling rod 34 is articulated in the manner shown in FIG. 4 at the end of a bolt 38 which is fastened in the manner shown in FIG. 4 to the vertical angle profile 39 of the frame 36.
  • the bow-shaped frame 24 pivotably mounted on the pin 22 of the lower pinch roller 7 is provided with U-shaped holding pieces 40, 41 holding the hydraulic cylinders 28.
  • a further coupling rod 42 is articulated, the other end of which is articulated on the bolt 44, which is also fastened to the vertical profile 39 of the frame 36.
  • the lengths of the coupling rods 34, 42 and their articulation points on the vertical profile 39 of the frame 36 as well as the articulation point of the coupling rod 42 on the holding piece 41 of the frame 24 and the lengths of the arms of the angle lever 31 are selected such that in a method of the carriage 16 1 and 2 into the sewing position 10 shown in FIG. 1, the bow-shaped frame 24 is pivoted from its vertical position into a horizontal position and the pinch roller 7 moves the opening edges detected only on the outer flags by the desired amount Prefers length.
  • the coupling rod 42 forms with the frame 24 and the coupling rod 34 with the angle lever 31 each a coupling rod lever gear, through which the frame 24 is pivoted between its vertical position and its horizontal position, and on the other hand, the lower clamping roller 7 the required rotation to give preference to the flattened opening edge.
  • the required drive is derived from the carriage 16.
  • the carriage 16 is displaceable on the guide rods 19 via bushings, not shown, which run parallel to the conveyor belt 6.
  • the guide rods 19 are fastened to end holding plates 50, 51 which are connected to one another parallel to the guide rods by the carrier profiles 52, 53.
  • the carrier profiles 52, 53 and possibly also the holding plate 51 are connected to the vertical profile 39 of the frame 36.
  • the carriage 16 is firmly connected to a spindle nut 55 into which the spindle 14 is inserted.
  • the spindle 14 is rotatably mounted in the holding plate 50.
  • the motor 56 which drives the spindle 14, is additionally flanged to the holding plate 50.
  • the motor 56 is controlled in such a way that it moves the carriage 16 synchronously with the conveyor belt 6 from the receiving station into the sewing station.
  • a cross member 60 is fastened to the vertical profiles 39 in the manner shown in FIG. 3 and carries the profiles 62, 63 via holding pieces 61.
  • the profiles 62, 63 are connected at the end in a leg-like manner to support plates 65, 66, between which guide rods 67, 68 are fastened at a distance and parallel to one another.
  • a carriage 70 carrying the sewing machine 11 can be moved on these guide rods 67, 68 and is guided on the guide rods 67, 68 via bushings (not shown).
  • the carriage is provided with a spindle nut into which the spindle 72 shown in FIG. 2 is screwed.
  • the spindle is driven by the motor 73 flanged to the holding plate 66.
  • the sewing machine 11 fastened on the carriage can thus be moved in the transverse direction to the conveyor belt 6 by the spindle drive in order to attach the sewing seam to the opening edges fixed in the sewing position by the clamping rollers 7, 8.
  • the sack 5 is shown immediately after being placed on the conveyor belt 6.
  • the pinch rollers 7, 8 are still at a distance from the flag 75 projecting beyond the pincer-like gripping members 4.
  • the bag is placed on the conveyor belt 6 after it has been filled by the filling device 80 by means of gripping or holding devices (not shown).
  • the preferred rollers 7, 8 forming a pair of preferred rollers are moved together by a device, not shown, so that they clamp between them the vertical and superimposed opening edges of the filled sack.
  • the preferred rollers 7, 8 advance the opening edges lying one on top of the other so far that they can be closed by a sewing seam even after being folded once or several times.
  • the preferred rollers 7, 8 are arranged in a slide running in a guide, which is driven synchronously with the conveyor belt 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Package Closures (AREA)
  • Sewing Machines And Sewing (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP86115492A 1985-12-13 1986-11-07 Machine pour fermer des sacs remplis Expired - Lifetime EP0228541B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3544156 1985-12-13
DE3544156 1985-12-13
DE3615178 1986-05-05
DE19863615178 DE3615178A1 (de) 1985-12-13 1986-05-05 Vorrichtung zum verschliessen von gefuellten saecken

Publications (2)

Publication Number Publication Date
EP0228541A1 true EP0228541A1 (fr) 1987-07-15
EP0228541B1 EP0228541B1 (fr) 1990-05-16

Family

ID=25838811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115492A Expired - Lifetime EP0228541B1 (fr) 1985-12-13 1986-11-07 Machine pour fermer des sacs remplis

Country Status (6)

Country Link
US (1) US4756142A (fr)
EP (1) EP0228541B1 (fr)
JP (1) JP2557863B2 (fr)
BR (1) BR8606150A (fr)
CA (1) CA1271173A (fr)
DE (1) DE3615178A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915018A1 (fr) * 1997-11-06 1999-05-12 Icoma FBS GmbH Packtechnik Procédé de remplissage et de fermeture de sacs

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0656101A (ja) * 1992-05-06 1994-03-01 Sig (Schweiz Ind Ges) 軟質袋体の充填装置
DE4314711C2 (de) * 1993-05-04 1998-09-10 Windmoeller & Hoelscher Vorrichtung zum Füllen und Verschließen gefüllter Säcke
DE4443480C2 (de) * 1994-12-07 2001-06-07 Rovema Gmbh Fördervorrichtung und Verfahren zur Förderung von Packgut entlang einer Verpackungsstrecke
DE50109358D1 (de) * 2000-09-25 2006-05-18 Siemens Ag Flüssigkristall-Anzeige
DE10358490B4 (de) * 2003-12-13 2005-12-15 Chronos Richardson Gmbh Vorrichtung zum Handhaben eines Sackes beim Vernähen
US7555878B2 (en) * 2005-02-18 2009-07-07 Ventomatic S.P.A. Device for sealing bags containing powder or granular materials
US20150151863A1 (en) * 2013-09-09 2015-06-04 Sandbags, LLC Material handling machine
CN104150257A (zh) * 2013-10-23 2014-11-19 厦门市保源塑料制品有限公司 全自动绕线机
CN106742110A (zh) * 2015-11-24 2017-05-31 衡阳市维达胜电气自动化设备有限公司 一种谷物自动定量打包机
CN105346777B (zh) * 2015-11-30 2018-05-08 内黄县昌兴生物机械设备有限公司 数控全自动菌包捆扎机
CN105947243A (zh) * 2016-06-24 2016-09-21 天津市大环生物肥料有限公司 一种有机肥装袋打包设备
CN206590173U (zh) * 2017-02-13 2017-10-27 天津同祺科技有限公司 一种将编织袋喂入缝包机的装置
CN114313466A (zh) * 2021-12-31 2022-04-12 合肥赛摩雄鹰自动化工程科技有限公司 一种缝包或热合封口功能一体化全自动包装机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576471A (en) * 1946-04-13 1951-11-27 Amseo Packaging Machinery Inc Bag handling machine having means for driving the bag downwardly and closing the mouth thereof
DE2623196A1 (de) * 1975-10-10 1977-04-21 Grisnich Maschf Bv Vorrichtung zum fuehren von sackraendern

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1646397A (en) * 1926-07-26 1927-10-25 Frank Julius Bag-sealing machine
US3241290A (en) * 1962-05-14 1966-03-22 Canadian Ind Bag top aligning device
US3471990A (en) * 1967-01-03 1969-10-14 Johnson Co Gordon Apparatus for and method of stretching,sealing and removing the tab from packages
DE1948229C3 (de) * 1969-09-24 1978-03-16 Haver & Boecker, 4740 Oelde Füllvorrichtung für einen oben offenen Sack, Beutel oder dergleichen
US3875726A (en) * 1973-10-23 1975-04-08 Olinkraft Inc In-feed device and method
US3990216A (en) * 1975-05-05 1976-11-09 Martin William F Bag closing and feeding apparatus
DE2629065C3 (de) * 1976-06-29 1979-04-05 Windmoeller & Hoelscher, 4540 Lengerich Vorrichtung zum automatischen Füllen und Verschließen von Sacken
DE2852191A1 (de) * 1978-12-02 1980-06-04 Rovema Gmbh Verfahren und vorrichtung zum fuellen und verschliessen von saecken
AT363851B (de) * 1979-12-12 1981-09-10 Pohlig Heckel Bleichert Vorrichtung zum verschliessen von insbesondere mit schuettgut od.dgl. gefuellten kunststoffsaecken durch verschweissen
DE3432517C2 (de) * 1984-04-26 1987-03-05 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Umlegen der einen gefüllten Sack seitlich überragenden Fahnen auf die mit Klebstoffstreifen versehene Sackoberseite

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576471A (en) * 1946-04-13 1951-11-27 Amseo Packaging Machinery Inc Bag handling machine having means for driving the bag downwardly and closing the mouth thereof
DE2623196A1 (de) * 1975-10-10 1977-04-21 Grisnich Maschf Bv Vorrichtung zum fuehren von sackraendern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915018A1 (fr) * 1997-11-06 1999-05-12 Icoma FBS GmbH Packtechnik Procédé de remplissage et de fermeture de sacs

Also Published As

Publication number Publication date
CA1271173A (fr) 1990-07-03
DE3615178A1 (de) 1987-06-25
US4756142A (en) 1988-07-12
DE3615178C2 (fr) 1987-11-26
JPS62146124A (ja) 1987-06-30
BR8606150A (pt) 1987-09-22
JP2557863B2 (ja) 1996-11-27
EP0228541B1 (fr) 1990-05-16

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