EP0538565A2 - Dispositif pour transporter des sacs et pour fermer des sacs ouverts - Google Patents

Dispositif pour transporter des sacs et pour fermer des sacs ouverts Download PDF

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Publication number
EP0538565A2
EP0538565A2 EP92113302A EP92113302A EP0538565A2 EP 0538565 A2 EP0538565 A2 EP 0538565A2 EP 92113302 A EP92113302 A EP 92113302A EP 92113302 A EP92113302 A EP 92113302A EP 0538565 A2 EP0538565 A2 EP 0538565A2
Authority
EP
European Patent Office
Prior art keywords
bag
abutment
sack
frame
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.)
Withdrawn
Application number
EP92113302A
Other languages
German (de)
English (en)
Inventor
Hans Lissner
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
Priority claimed from DE19914125997 external-priority patent/DE4125997C1/de
Priority claimed from DE19914127485 external-priority patent/DE4127485A1/de
Application filed by Individual filed Critical Individual
Publication of EP0538565A2 publication Critical patent/EP0538565A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • B65B7/08—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 and folding
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags

Definitions

  • the invention relates to a device for transporting sacks between a filling station and a closing station, the filled sack being gripped by bag clamps in the area of the filling station below its sack opening and being brought by these on a linear path into the area of the closing station.
  • the invention further relates to a device for closing open sacks with an abutment, a locking jaw movable against the abutment and a folding sword pivotally mounted on one side, an upper edge strip of the sack being folded over the folding sword onto the front of the sack and being clamped between the abutment and the closing jaw is glued to the front of the sack.
  • the filled sack is gripped in the region of its upper opening by sack clamps, the drive and actuating elements of which are located above the sack clamps.
  • the bag clamps bring the bag with a linear movement into the area of a closing station, in which the bag is gripped by surrounding chains underneath an upper edge strip and the upper edge strip is folded and closed in the passage.
  • This closure station known from DE-U 81 33 360 has a relatively long length.
  • a closure station with movable closure jaws is also known, which closes a sack not in the passage but in the idle state.
  • a similar locking station is also described in German patent application P 41 25 997.
  • the sack can be brought to such a closing station on a circular path, as is disclosed in DE-A1 23 01 817 and DE-U 74 32 327.
  • the invention is therefore initially based on the object of specifying a device of the type described at the outset with which a filled sack can be transferred in an exact alignment with an upper edge suitable for folding and closing to a closing station which does not operate continuously.
  • the bag clamps are arranged in a frame, the two end faces pointing in the direction of transport and its top are open, and that the frame is arranged on a movable between the filling station and the closing station carriage.
  • the drives and / or actuators for the bag clamps can be designed and arranged so that they do not interfere in the area of the filling station or in the area of the closing station.
  • the bag clamps can be arranged in the upper area of the frame and their drives underneath, so that the bag is transported in exact alignment with an upper, freely accessible edge strip, which is folded over and closed in the closing station.
  • the frame can be raised and lowered, the sack can also be removed from the filler neck, and a sack chair that can be raised and lowered can be provided in the frame to support sacks of different sizes. It is about the transport of gusseted bags, then a device can also be attached to the frame with which the gussets of the sack removed from the filler neck can be folded in again.
  • the bag clamps are attached to arms which are pivotally mounted in the lower part of the frame.
  • the bag clamps can also be arranged on the frame so as to be linearly displaceable.
  • lifting cylinders can be provided which act on the bag clamps themselves or on their arms and which are supported on the frame. So that the frame can perform defined lifting or lowering movements, the trolley should have side cheeks with vertical guides for the frame.
  • the frame can be supported on the carriage via lifting cylinders.
  • the carriage itself can be movable on running rails which are arranged in a frame which extends at least between the filling station and the closing station.
  • the bag clamps preferably consist of pairs of clamping jaws which grip the lateral bag edges, both jaws of each pair of clamping jaws being arranged on the same half of the frame, as seen in the transport direction.
  • a device in which a bag to be closed is brought into the area of the device with a pre-folded upper edge strip and in which the clamping plane between the abutment and the locking jaw is aligned horizontally.
  • a folding sword is placed in the fold line and swung in between the abutment and the locking jaw. Then the locking jaw is moved against the abutment to complete the gluing of the sack. Subsequently the clamping between the abutment and the locking jaw is released and the closed sack is pulled in the longitudinal direction of the folding sword or moved out of the device.
  • a disadvantage of this known device is that the upper edge strip must be pre-folded in an additional operation.
  • Another device is known from DE-B1 35 21 853, in which the clamping plane formed between the abutment and the locking jaw for the upper edge strip and the bag section to be glued to it is oriented essentially vertically.
  • a folding sword is also provided, over which the upper edge strip is folded.
  • the locking jaw is first guided in the direction of the protruding edge strip of the sack and then parallel to the level of the folding sword and finally against the abutment.
  • the folding sword must be removed before gluing.
  • the folding sword is divided into three parts so that the sack maintains its position during the folding movement of the locking jaw.
  • the invention is therefore also based on the object of improving a device for closing open sacks so that the upper edge strip of the sack to be closed is folded over without pre-folding with exact folding onto the front side of the sack and glued to it.
  • the clamping plane of the abutment and the locking jaw is arranged substantially vertically, that a detachably engaging device is provided at both ends of the folding sword, which presses the folding sword with the interposition of a bag section against the abutment, and that the locking jaw is open a path is movable on which it grasps the upper edge of the sack and folds it over the folding sword to the front of the sack.
  • the sack which is brought into the area of the device by hand or on a transport path, possibly held by bag clamps, is first clamped between this folding saber and the abutment with the aid of the folding sword in the area of a bag section adjoining the upper edge strip. Possibly. existing bag clamps can then be released. Since the folding sword cannot move freely, its upper edge defines an exact fold line for the edge strip of the sack when the closing jaw is moved as described. For this purpose, the locking jaw is advantageously in the rest position above the abutment and its lower edge just above the upper edge of the folding sword.
  • the closing jaw presses the upper edge strip folded by 180 ° against the front of the sack and together with this front against the abutment, so that the gluing can take place.
  • the locking jaw and / or the abutment can be heated in a manner known per se.
  • the locking jaw is moved back into its rest position, and the device attacking the ends of the folding sword is released, after which the sack can be removed from the folding sword. This can be done by moving the Sacks or by moving the folding sword if it is arranged displaceably in its longitudinal direction.
  • Lift cylinders can attack at both ends of the folding sword.
  • At least the free end of the folding sword and the part of the device acting there can have mutually assigned centering means in the form of a centering depression and a centering mandrel. Basically, it is sufficient if the locking jaw and the folding sword are assigned the same abutment.
  • the folding sword can also be assigned its own folding abutment, which is arranged between the locking jaw in the rest position and the abutment.
  • the device shown in Figures 1 to 4 is used to transport bags 1 between a filling station 2 with filler neck 3 and a closure station 4 with a closure device 5.
  • the transport takes place with a linear movement in the transport direction 6.
  • the carriage 9 is movable on rails 12 which are arranged in a frame 13.
  • the running rails extend at least between the filling station 2 and the closing station 4.
  • the frame 13 can be arranged on a floor or on a separate foundation.
  • Arms 15 are mounted on the bottom of the frame 7 in pivot bearings 14, the pivot axes of which extend in the transport direction 6.
  • the arms extend to the upper end of the frame 7 or beyond and carry at their upper ends angled bag clamps 16.
  • lifting cylinders 17 engage with an essentially horizontal direction of action.
  • the lifting cylinders 17 are supported on the associated sides of the frame 7.
  • the bag clamps 16 are generally longer than the bag 1 to be transported is wide. In an embodiment not shown, the bag clamps can also be connected directly to the lifting cylinders and mounted on the frame 7 in a horizontally displaceable manner.
  • a bag chair 18 which can be raised and lowered independently of the frame is also arranged between the arms 15.
  • the device shown works as follows: The empty frame 7 is moved with open bag clamps 16 from the closure station 4 to the filling station 2 under the filler neck 3.
  • the bag clamps 16 are opened as far as is necessary for unhindered passage in a bag that has already been folded with the aid of the nozzle.
  • a freely accessible edge strip 19 remains for the closure of the bag 1 above the bag clamps 16.
  • the bag chair 18 can be raised accordingly.
  • the sack 1 is lowered with the help of the frame 7 simultaneously with the sack chair 18 so that the upper edge of the sack 1 is free of the filler neck 3 and at the same time in the height of Folding and gluing equipment is located.
  • the bag clamps 16 When an unfolded sack is picked up from a fully opened filler neck, the bag clamps 16 are opened a little more than the width of the filled sack or the width of the filler neck. With the help of a stationary device, the side folds of the bag 1 are inserted and then the bag clamps 16 are closed. In this way, even in this case, after the bag clamps 16 have been closed, a freely accessible edge strip 19 for closing the bag remains above the bag clamps 16. Then the frame 7 of the locking station 4 is moved.
  • the closure station 4 also has a folding and an adhesive device which is located directly next to the filling station 2. Folding and gluing can be carried out one above the other or side by side. The latter variant is not shown in the drawing.
  • the locking device 5 of the locking station 4 is arranged so that its components are located just above the bag clamps 16. These components fold the edge strip 19 along a fold line and can close the bag 1.
  • the components include a folding sword 20 mounted on one side, which is pressed against an abutment 22 with the aid of lifting cylinders acting on its ends while clamping a section of the edge strip 19.
  • the components also include a movable closure jaw 23 which folds the upper section of the edge strip 19 onto the front side of the sack 1 via the folding sword 20 and presses it against the abutment 22. As soon as the bag 1 is held by the folding sword 20, the bag clamps 16 can be released and the frame 7 can be moved back to the filling station 2.
  • the bag clamps can consist of pairs of jaws which grip the lateral bag edges in the manner of pliers.
  • both jaws of each pair of jaws, as seen in the transport direction 6, are arranged on the same half of the frame 7.
  • the other half of the frame 7 can be omitted.
  • the sack 1 shown in FIG. 5 is an open paper sack with gussets 32 and a glued bottom 33. In the area of its upper opening 35, the sack 1, which is constructed in several layers, is cut in a staggered manner so that the layers 34 of the sack become visible and the rear sack wall forms a projection 36.
  • the bag 1 is taken over with the aid of the bag clamps designed as clamping jaws 39, the bag clamps either extending over the entire bag width or only the side folds 32 capture.
  • the distance between the jaws 39 from the upper edge of the sack 1 is so large that an upper edge strip of the sack 1 can be folded over a fold line below the opening 35 onto the front of the sack 1 and glued to the front.
  • the sack 1 has an adhesive application 40 already applied during sack production or later in the area of the projection 36.
  • the sack is fed to the closure device with a transport path, not shown, or by hand.
  • This device is shown in detail in FIGS. 6 to 8. It consists in its basic structure of the abutment 22 for the back of the bag 1 and the locking jaw 23 which interacts with this abutment 22.
  • the locking jaw 23 is arranged in the rest position above the abutment 22.
  • the device also includes the folding sword 20, one end of which is connected via a web 41 to an axis 42 pivotable about its longitudinal axis.
  • a folding abutment 22a is assigned to the folding sword 20 and is arranged between the locking jaw 23 which is in the rest position and the abutment 22.
  • FIG. 6 shows the sack 1 inserted into the device in the clamping of the clamping jaw 39, the back of the sack section projecting beyond the clamping jaws 39 being located in a substantially vertical plane in front of the closing jaw 23, the folding abutment 22a and the abutment 22.
  • the folding sword 20, which is pivotable about the axis 42, is folded down and is located in front of the front of the sack section projecting beyond the clamping jaws 39.
  • the folding sword 20 is now pressed against the associated folding abutment 22a with the aid of the two lifting cylinders 21 acting on its end while clamping the corresponding sack section.
  • a centering device is located at least at the free end of the folding sword 20 in the form of a centering mandrel 43 on the lifting cylinder 21 and a respectively assigned centering recess 44 at the end of the folding sword 20.
  • the sack 1 is now held in a predetermined position in the device.
  • the jaws 39 can be released and used to bring a new bag 1.
  • the locking jaw 23 is first guided in the direction of the projecting edge strip of the bag 1 and then parallel to the plane of the folding sword 20 and finally against the abutment 22.
  • the folding is only shown schematically in FIG. 8. In any case, the upper edge of the folding sword 20 defines an exact folding line for the upper edge strip of the sack 1.
  • This edge strip if it has been turned over by 180 ° on the front side of the sack 1, can be clamped with this front side of the sack 1 in the clamping between the Sealing jaw 23 and the abutment 22 are reliably glued. It is not shown that the interacting surfaces of the locking jaw 23 and the abutment 22 are heated when the adhesive application 40 consists of a heat-activatable adhesive.
  • the lifting cylinders 21 are released. These then release the folding sword 20, and in particular its free end.
  • the closed sack 1 can now be pulled off the free end of the folding sword 20.
  • the folding sword 20 can also in be longitudinally displaceable. It can then be pulled out of the fold.
  • the folding sword 20 can also be held at both ends in detachable and pivotable clamps, of which one or the other clamp releases the relevant end of the folding sword after the bag has been closed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
EP92113302A 1991-08-06 1992-08-05 Dispositif pour transporter des sacs et pour fermer des sacs ouverts Withdrawn EP0538565A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19914125997 DE4125997C1 (en) 1991-08-06 1991-08-06 Closing mechanism for open bags - has auxiliary folding implement with folding blade a one lever end, swivelable against support bearing
DE4125997 1991-08-06
DE4127485 1991-08-20
DE19914127485 DE4127485A1 (de) 1991-08-20 1991-08-20 Vorrichtung zum transport von saecken zwischen einer fuellstation und einer verschlussstation

Publications (1)

Publication Number Publication Date
EP0538565A2 true EP0538565A2 (fr) 1993-04-28

Family

ID=25906127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113302A Withdrawn EP0538565A2 (fr) 1991-08-06 1992-08-05 Dispositif pour transporter des sacs et pour fermer des sacs ouverts

Country Status (1)

Country Link
EP (1) EP0538565A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009765A1 (fr) * 1993-10-04 1995-04-13 Bühler AG Procede et dispositif de fermeture automatique de sacs de transport
CN108706139A (zh) * 2018-06-19 2018-10-26 厦门祺安达自动化设备有限公司 一种立式菌包装袋机
CN113173305A (zh) * 2021-05-19 2021-07-27 天津日博工业技术有限公司 一种带封口绳袋子的拆袋系统

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009765A1 (fr) * 1993-10-04 1995-04-13 Bühler AG Procede et dispositif de fermeture automatique de sacs de transport
TR28106A (tr) * 1993-10-04 1996-01-08 Buehler Ag Geb Nakliye islerinde kullanilan torbalarin/cuvallarin otomatik bir sekilde kapatilmasi icin metod ve düzenek.
US5890348A (en) * 1993-10-04 1999-04-06 Buhler Ag Method and apparatus for the automatic closing of transport bags
CN1053418C (zh) * 1993-10-04 2000-06-14 布勒股份公司 自动封闭输送袋口的方法和设备
CN108706139A (zh) * 2018-06-19 2018-10-26 厦门祺安达自动化设备有限公司 一种立式菌包装袋机
CN113173305A (zh) * 2021-05-19 2021-07-27 天津日博工业技术有限公司 一种带封口绳袋子的拆袋系统

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