EP0100836B1 - Vorrichtung zum Spannen eines um ein Packstück gelegten Umreifungsbandes - Google Patents

Vorrichtung zum Spannen eines um ein Packstück gelegten Umreifungsbandes Download PDF

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Publication number
EP0100836B1
EP0100836B1 EP83105760A EP83105760A EP0100836B1 EP 0100836 B1 EP0100836 B1 EP 0100836B1 EP 83105760 A EP83105760 A EP 83105760A EP 83105760 A EP83105760 A EP 83105760A EP 0100836 B1 EP0100836 B1 EP 0100836B1
Authority
EP
European Patent Office
Prior art keywords
lever
tensioning
wheel
stage
gear
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
Application number
EP83105760A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0100836A3 (en
EP0100836A2 (de
Inventor
Gerd Bartzick
Gerd Bühne
Jürgen Ing. grad. Werk
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.)
Hoesch AG
Original Assignee
Hoesch AG
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 Hoesch AG filed Critical Hoesch AG
Publication of EP0100836A2 publication Critical patent/EP0100836A2/de
Publication of EP0100836A3 publication Critical patent/EP0100836A3/de
Application granted granted Critical
Publication of EP0100836B1 publication Critical patent/EP0100836B1/de
Expired 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/34—Securing ends of binding material by applying separate securing members, e.g. deformable clips
    • B65B13/345—Hand tools

Definitions

  • the invention relates to a device for tensioning a strapping that can be pulled off a supply roll and placed around a package, and for connecting the overlapping ends of the strapping with a closure and for separating the part of the strapping that leads to the supply roll, which consists of a housing, for the tensioned strapping with a base plate to be placed on the package, which has the lower tool for the formation of the closure, while the upper tool for the formation of the closure is arranged vertically displaceably in the housing and can be moved into the active position by a motor drive, and the housing for a lateral insertion of the overlapping band ends has a slot-shaped receptacle between the two tools above the base plate and is provided with a tensioning device which acts on the upper side of the overlapping band ends and with a motor drive in the tensioning direction
  • Tensionable wheel the motor drive of the upper tool for the closure formation and the motor drive for the tensioning wheel is formed by a single drive motor, which in its one direction of rotation first reverses the tensioning wheel for
  • the overlapping band ends are pressed with a pressure plate against the tensioning wheel of the tensioning device, the pressure plate being provided on a pivot lever which is spring-loaded in the pressure direction.
  • the pivot lever is mounted in such a way that when the tensioning device is used as intended, i.e. when the tensioning wheel is turned, it presses the pressure plate even more firmly against the overlapping band ends, the pivoting lever performing a pivoting movement.
  • This pivoting movement of the pivot lever is used to actuate the switch.
  • the switch is held on the pivot lever and interacts with an adjustable stop which is provided on the housing.
  • the pressure plate and thus the swivel lever is pivoted in the direction of the tensioning wheel until the switch with the adjustable stop causes the switch to be switched off and thus the drive motor for the tensioning wheel is suspended.
  • the drive motor for the tensioning wheel is therefore switched off depending on how far the pivoting lever has been pivoted and the pressure plate has been pressed against the tensioning wheel.
  • the overlapping ends of the strapping are arranged between the pressure plate and the tensioning wheel, so that tolerances in the thickness of the strapping influence the tension that can be achieved in the strapping.
  • the tensioning wheel and the pressure plate are provided with a cord which is pressed into the overlapping band ends when the pressure plate is pressed in the direction of the tensioning wheel. Differences in the strength of the strapping, which opposes the pressing of the cord into the strapping, also influences the tension that can be achieved in the strapping. In the known device, repeated reaching of a predetermined tension in the strapping band is therefore not possible.
  • the invention has for its object to provide a device of the type mentioned, in which such disadvantages are avoided and with which a precisely adjustable tension in the strapping is achieved repeatedly.
  • the changeover switch consists of a lever which can be locked from a basic position counter to the action of an energy accumulator and which acts via an adjusting screw on a spring-loaded shift lever, the pivot lever acting on the shift lever being actuatable with the reaction force of the drive. It is thereby achieved in a simple manner that the strap tension can be brought exactly to the desired value, since the reaction force of the drive increases with the action force of the drive for rotating the drive wheel with the increasing strap tension in the strapping strap and the changeover switch can be set in such a way that the drive is switched off at the point in time at which the desired belt tension is reached.
  • the pivoting lever acting on the shift lever can be designed as a two-armed lever and mounted on an axis and the reaction force of the drive can act on the one lever arm, while the force accumulator directed against the reaction force and the shift lever act on the second lever arm. It is thereby achieved in a simple manner that the two-arm pivot lever engages the drive with its one lever arm and is acted upon by the reaction force, while a force accumulator acts on the second lever arm, which counteracts the pivoting of the pivot lever, so that only for pivoting the pivot lever the force of the energy accumulator must be overcome before switching the drive motor is possible with the shift lever.
  • the energy accumulator can be formed by a tension spring acting on the free end of the second lever arm of the swivel lever. With this tension spring forming the energy store, the pivot lever is held in the basic position in a simple manner and counteracts the pivoting a certain force.
  • the shift lever can be designed as a two-armed lever and also on the axis of the Be pivotally mounted pivoting lever and have the adjusting screw on its one lever arm in a lateral widening spanning the pivoting lever.
  • the shift lever and the pivot lever are mounted on a common axis in a simple manner, the shift lever having the adjusting screw on its one lever arm in a lateral widening that extends over the pivot lever.
  • the lever arm of the shift lever which has the adjusting screw, can have an opening for the articulation of a helical tension spring at its free end.
  • the shift lever thus also has a coil tension spring which holds it in its basic position and opposes the pivoting resistance.
  • the second lever arm In its basic position, the second lever arm can protrude in the movement path of a spring-loaded changeover valve for the drive motor that can be operated with compressed air and runs parallel to the pivot axis of the shift lever and, after pivoting into the active position, release the movement path for the spring-actuated switching of the valve.
  • the device is thus driven in a simple manner with a motor operated by compressed air, and the switchover takes place via a switchover valve, the switch lever releasing the spring-loaded switchover valve after it has been brought into the switch position, so that it is shifted into the switchover position under the action of the associated spring .
  • the motor which can be driven with compressed air in both directions of rotation, can be assigned a multi-stage, preferably three-stage planetary gear, each with a sun gear, planet gears and planet gear carriers and internally toothed gear, the motor being the sun gear of the first gear stage and the planet gear carrier of the first stage being the sun gear of the second stage and Planet gear carrier of the second stage the sun gear of the third stage and the planet gear carrier of the third stage in one direction of rotation the tensioning wheel for tensioning the strapping and in the opposite direction of rotation actuated the tool for the closure formation.
  • this three-stage planetary gear the speed of the motor operated with compressed air is reduced, with a corresponding increase in torque.
  • the drive motor operated by compressed air the required torque for tensioning the strapping and for inserting the closure can thus be achieved in a simple manner.
  • the pivoting lever acting on the shift lever can be operatively connected with its first lever arm to the internally toothed gear of the first gear stage, which is rotatably mounted in the gear housing.
  • a reaction force arises on the internally toothed gear of the first gear stage, which increases with the corresponding action force of the gear.
  • the internally toothed gear is rotatably mounted in the housing and interacts with the spring-loaded pivot lever, so that the pivot lever is pivoted by the internally toothed gear against the action of the associated energy accumulator and thus the changeover is effected.
  • the torque is still relatively small, so that the reaction force is also small.
  • a relatively small energy store can thus be assigned to the pivot lever for the switchover.
  • the switching time can be set precisely.
  • the internally toothed gear wheel which is rotatably mounted in the gear housing, can have a recess in the outer lateral surface for the first lever arm of the spring-loaded pivot lever.
  • the swivel lever engages in this recess with its one lever arm and is swiveled when the internally toothed gear is turned.
  • a pressure relief valve can be assigned to the drive motor operated with compressed air in the compressed air line. Overloading of the motor is thus avoided in a simple manner.
  • the device shown in the drawing is used for tensioning a strapping placed around a package (not shown) and also not shown and for connecting the overlapping ends of the strapping with a sleeve-less closure.
  • the device consists of a housing 10 with a base plate 11 which can be placed on the package and which has the lower tool for the closure formation, while the upper tool for the closure formation is arranged vertically displaceably in the housing 10.
  • the upper tool for the closure formation in the housing 10 is displaced with an eccentric, not shown, which is held on a shaft 12.
  • the shaft 12 is driven in a manner yet to be described with a motor 13 which is driven with compressed air.
  • the housing 10 has a slot-shaped receptacle 14 for the lateral insertion of the overlapping band ends between the two tools for forming the closure over the base plate 11. Furthermore, the housing 10 is provided in a recess 15 with a pivotably mounted tensioning device 16, which is biased towards the base plate 11 with a spring, not shown.
  • the clamping device 16 is around the bearing pin 17th pivotable and has a tensioning wheel 18 acting on the upper side of the overlapping band ends.
  • the tensioning wheel 18 is also driven in a manner to be described, also with the motor 13, which is driven with compressed air.
  • the pivoting about the bearing pin 17 clamping device 16 is provided with a hand lever 19 with which the clamping device 16 from the basic position shown in FIG. 1, in which the tensioning wheel 18 bears against the base plate 11, against the action of the spring not shown in FIG the tape insertion position is transferable.
  • the tensioning wheel 18 of the tensioning device 16 is arranged at such a distance from the base plate 11 that the overlapping strap ends of the strapping strap can be inserted under the tensioning wheel 18 without difficulty.
  • the device shown in the drawing is used for tensioning a strapping that can be pulled off a storage roll (not shown) and placed around a package, and for connecting the overlapping ends of the strapping with a sleeve-less closure and for separating the part of the strapping that is not shown for the strapping Supply roll of leading strapping tape.
  • the separating device consists of a notch knife, not shown, which is provided on the upper tool for the formation of the closure.
  • the compressed air motor 13 is accommodated with a downstream reduction gear 20 in a special housing 21 which is placed on the housing 10.
  • a hand lever 22 is arranged on the housing 21 and is provided above the hand lever 19 in the tensioning device 16. The operator can thus grasp and compress both hand levers 19 and 22 so that the tensioning device 16 can be transferred to the tape insertion position.
  • the compressed air motor is accommodated in parallel in the housing 21 next to the reduction gear 20, so that a compact design is achieved.
  • the axis of rotation 23 of the compressed air motor 13 runs parallel to the axis of rotation 24 of the reduction gear 20 and also parallel to the axis of rotation 25 of the tensioning wheel 18 and parallel to the shaft 12 of the upper tool for the closure formation.
  • the rotary movement of the compressed air motor 13 can thus be transmitted in a simple manner via spur gears.
  • a pinion 26 is provided, which is connected to an intermediate gear 27, with a gear 28 which is arranged in a rotationally fixed manner on the axis of rotation 24 of the reduction gear 20.
  • the reduction gear consists of a three-stage planetary gear, each stage each having a sun gear, planet gears, a planet carrier and an internally toothed gear in a manner not shown.
  • the axis of rotation 24 driven by the compressed air motor 13 actuates the sun gear of the first gear stage and the planet gear carrier of the first stage the sun gear of the second stage and the planet gear carrier of the second stage the sun gear of the third stage and the planet gear carrier of the third stage a rotational axis 29 on which a gear wheel 30 is put on.
  • the gear 30 acts, as can be seen in particular from FIG. 3, via an intermediate gear 31 on a gear 32 which is arranged with a one-way clutch 33 on the shaft 12 of the upper tool for the closure formation.
  • a second intermediate wheel 34 which is rotatably mounted on the bearing pin 17 of the tensioning device, also acts on the intermediate wheel 31.
  • the intermediate gear 34 meshes with a gear 35, which is placed on the axis of rotation 25 of the tensioning wheel 18 via a one-way clutch 36.
  • the strapping When used as intended, the strapping must first be tensioned. that is, to drive the tensioning wheel 18 with the compressed air motor 13 before the sleeveless closure is to be introduced into the overlapping band ends.
  • the air motor 13, which is switchable is driven in one direction of rotation.
  • the gear 32 which is fitted on the shaft 12 with the one-way clutch 33 is driven.
  • the gear 32 is rotated in the direction that the shaft 12 for the upper tool for the closure formation is not rotated via the one-way clutch 33.
  • the compressed air motor 13 is switched over in a manner to be described, so that it now rotates in the opposite direction.
  • the shaft 12 of the upper tool for the closure formation is now carried along by the gear 32 via the one-way clutch 33.
  • the gear 35 which is assigned to the tensioning wheel 18, is also rotated, but the axis of rotation 25 of the tensioning wheel 18 is not rotated via the one-way clutch 36.
  • the axis of rotation 25 of the tensioning wheel 18 can be assigned a further one-way clutch, not shown in detail, which prevents the tensioning wheel 18 from being turned back unintentionally.
  • the switchover device is shown in more detail in FIGS. 4 and 5.
  • the switch 37 consists of a two-armed angle lever 38 which is pivotally mounted on an axis 39.
  • the shorter lever arm 40 of the angle lever 38 is in a manner to be described by the reaction force of the reduction gear bes acted upon 20, while a helical tension spring 42 is articulated on the longer lever arm 41 of the angle lever 38.
  • a pivoting of the angle lever 38 from the basic position shown in FIG. 4 into the switching position thus takes place counter to the action of the tension spring 42.
  • the lever arm 41 of the angle lever 38 acts via an adjusting screw 43 on a switching lever 44 which is also pivotably mounted on the axis 39 is.
  • the shift lever 44 has a lever arm 45 which runs parallel to the lever arm 41 of the angle lever and which is provided with a widening 46 which overlaps the angle lever. In the widening 46, the adjusting screw 43 is drawn into a threaded bore, not shown.
  • a helical tension spring 47 is also articulated, so that the shift lever 44 is pivoted from the basic position shown in solid lines in FIG. 4 into the shift position shown in dashed lines against the action of the tension spring 47 .
  • the second lever arm 48 of the switching lever 44 protrudes in the movement path of a spring-loaded changeover valve 49 for the compressed air motor 13 which runs parallel to the pivot axis 39 of the switching lever 44 and, after it has pivoted into the switching position, releases the movement path for the spring-actuated switching of the valve 49.
  • the piston 50 of the changeover valve 49 is under the action of a helical compression spring 51 which shifts the piston 50 into the changeover position.
  • the switch 37 is actuated with the reaction force of the drive.
  • the internally toothed gear 52 of the first gear stage which is rotatably mounted in the gear housing 21, has a recess 54 in the outer lateral surface 53 for the first lever arm 40 of the angular swivel lever 38.
  • a pressure relief valve 56 can be provided in the compressed air line 55.
  • This pressure relief valve has a valve ball 57, which is under the action of a helical compression spring 58, an adjustable screw 59 abutting against the rear end of the helical compression spring 58, with which the pretension of the helical compression spring 58 can be adjusted.
  • the valve ball 57 is pressed with the helical compression spring 58 against a valve seat 60 and thus closes off the compressed air line 55.
  • the valve ball 57 is raised against the action of the helical compression spring 58 from the valve seat 60, so that the compressed air can flow out through the line 61.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP83105760A 1982-08-11 1983-06-11 Vorrichtung zum Spannen eines um ein Packstück gelegten Umreifungsbandes Expired EP0100836B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823229869 DE3229869A1 (de) 1982-08-11 1982-08-11 Vorrichtung zum spannen eines um ein packstueck gelegten umreifungsbandes
DE3229869 1982-08-11

Publications (3)

Publication Number Publication Date
EP0100836A2 EP0100836A2 (de) 1984-02-22
EP0100836A3 EP0100836A3 (en) 1986-12-30
EP0100836B1 true EP0100836B1 (de) 1988-05-11

Family

ID=6170601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105760A Expired EP0100836B1 (de) 1982-08-11 1983-06-11 Vorrichtung zum Spannen eines um ein Packstück gelegten Umreifungsbandes

Country Status (3)

Country Link
US (1) US4574848A (enrdf_load_stackoverflow)
EP (1) EP0100836B1 (enrdf_load_stackoverflow)
DE (2) DE3229869A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600909A1 (de) * 1986-01-15 1987-07-16 Hoesch Ag Steuervorrichtung
US5355913A (en) * 1992-10-09 1994-10-18 United States Surgical Corporation Surgical repair device
US5417698A (en) * 1992-10-09 1995-05-23 United States Surgical Corporation Apparatus for tightening elongated wound closure elements
US5975150A (en) * 1998-06-03 1999-11-02 Teknika Usa, Inc. Strapping band tightening device
US8522830B2 (en) * 2009-12-03 2013-09-03 Teknika Usa, Inc. Two stroke crimping device
US9221567B2 (en) 2012-01-25 2015-12-29 Southern Bracing Systems Enterprises, Llc Systems, methods, and devices for tensioning straps
CN103831785A (zh) * 2012-11-22 2014-06-04 富泰华工业（深圳）有限公司 定位拉伸治具
CA2996505C (en) 2015-10-02 2019-11-05 Asco, L.P. A combination manifold and valve housing for a manifold bank made by an additive manufacturing method
EP3356684B1 (en) 2015-10-02 2024-11-27 Asco, L.P. Manifold bank

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815345A (en) * 1927-02-05 1931-07-21 Howard D Colman Overload release mechanism
US2593933A (en) * 1947-07-03 1952-04-22 Raymond C Strawn Planetary power transmission device
DE1113897B (de) * 1954-02-02 1961-09-14 Johan Olov Larsson Spannvorrichtung an Umschnuerungsmaschinen
DE1238346B (de) * 1963-09-10 1967-04-06 Zahnradfabrik Friedrichshafen Ohne Zugkraftunterbrechung schaltbares zweigaengiges Umlaufraedergruppengetriebe, insbesondere zum Zusammenbau mit Kraftfahrzeugwechselgetrieben
US3506041A (en) * 1968-06-03 1970-04-14 Signode Corp Pneumatic sealing control system for strapping machines
DE2537443A1 (de) * 1975-08-22 1977-03-03 Joachim Helff Verfahren eines integrierten antriebes fuer das eintreiben, zurueckziehen, spannen und verschliessen von bindemittel
DE2641889C3 (de) * 1976-09-17 1982-04-29 Ley, Klaus, 5608 Radevormwald Bindewerkzeug
CH605258A5 (enrdf_load_stackoverflow) * 1976-10-08 1978-09-29 Strapex Ag
CH603313A5 (enrdf_load_stackoverflow) * 1976-12-03 1978-08-15 Borbe Wanner Ag
DE2808542A1 (de) * 1978-02-28 1979-09-06 Joachim Ing Grad Helff Stahlbandumreifungsgeraet
US4218969A (en) * 1979-02-01 1980-08-26 Nichiro Kogyo Company, Limited Band feeding and tightening apparatus for strapping machine
US4313779A (en) * 1979-07-30 1982-02-02 Signode Corporation All electric friction fusion strapping tool

Also Published As

Publication number Publication date
US4574848A (en) 1986-03-11
EP0100836A3 (en) 1986-12-30
DE3229869A1 (de) 1984-02-16
DE3376552D1 (en) 1988-06-16
EP0100836A2 (de) 1984-02-22
DE3229869C2 (enrdf_load_stackoverflow) 1989-07-27

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