EP0723512B1 - Vorrichtung zum spannen und verschliessen von umreifungsbändern - Google Patents

Vorrichtung zum spannen und verschliessen von umreifungsbändern Download PDF

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Publication number
EP0723512B1
EP0723512B1 EP94929487A EP94929487A EP0723512B1 EP 0723512 B1 EP0723512 B1 EP 0723512B1 EP 94929487 A EP94929487 A EP 94929487A EP 94929487 A EP94929487 A EP 94929487A EP 0723512 B1 EP0723512 B1 EP 0723512B1
Authority
EP
European Patent Office
Prior art keywords
lever
swivelling
wheel
tensioning
pressure
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
EP94929487A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0723512A1 (de
Inventor
Hubert Wehr
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.)
Cyklop GmbH
Original Assignee
Cyklop GmbH
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 Cyklop GmbH filed Critical Cyklop GmbH
Priority to SI9430055T priority Critical patent/SI0723512T1/xx
Publication of EP0723512A1 publication Critical patent/EP0723512A1/de
Application granted granted Critical
Publication of EP0723512B1 publication Critical patent/EP0723512B1/de
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
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/025—Hand-held tools

Definitions

  • the invention relates to a device for tensioning and closing strapping tapes, in particular made of plastic, for package strapping, with a tensioning wheel which can be rotated with a tensioning lever and which cooperates with a pressure plate to tension the strap ends, and with a closing device with which the two strap ends are pressed together and can be connected to one another, as well as with an opening device which, when actuated, lifts the closing device from the ends of the band and brings the pressure plate out of its interaction with the tensioning wheel.
  • Devices of this type with which, for example, plastic straps placed around packages and can be closed with the closing device, generally have a drive motor which is supplied with current by a rechargeable accumulator or a replaceable battery.
  • the strapping is tensioned with the swivel lever, so that the motor is only required to operate the closing device and therefore consumes little electricity.
  • the swivel lever is normally arranged with a ratchet mechanism on the tensioning wheel axis so that it rotates the tensioning wheel when swiveling in one direction and thus braces the two ends of the band against one another.
  • the tensioning wheel axis is locked and the swivel lever can pivot freely on it.
  • an additional ventilation lever is used in the known devices, which has to be actuated before inserting the tape ends and after closing, in order to be able to insert the tape ends into the device or to thread them out again.
  • Such an additional ventilation lever makes the device unwieldy and can be disruptive when the pivot lever is actuated to tension the ends of the belt. It is possible that inexperienced users of the device may mix up the two levers. In this case, it can happen that already strapped straps suddenly lose their pretension due to unintentional actuation of the ventilation lever and snap out of the device and thereby injure the user of the device.
  • the object of the invention is to avoid these disadvantages and to provide a device for tensioning and closing strapping that is particularly handy and easy and safe to use.
  • an actuating element is provided between the pivoting lever and the opening device, which is in engagement with an actuating surface for actuating the opening device when the pivoting lever is pivoted in a certain region.
  • This embodiment has the advantage that an additional ventilation lever can be dispensed with, since the swivel lever serves both for tensioning the strapping straps and for lifting the pressure plate and the closing device after the closure has been carried out or before the strap ends have been inserted.
  • the device thus comes with only one lever for tensioning the strap ends as well as for actuating the opening device and is therefore very handy and particularly simple and safe to use.
  • the user of the device does not have to move from one lever to another for tensioning and opening, so that operating errors due to confusion of different levers are excluded.
  • the actuating element is a stop bolt arranged on the swivel lever and the actuating surface is arranged on a lever element coupled to the opening device.
  • Such an embodiment is particularly simple and inexpensive to manufacture and ensures problem-free operability of the device.
  • the lever element is preferably rotatably arranged on the rotating shaft of the tensioning wheel, which is particularly space-saving. It is particularly advantageous if the stop pin is connected to a locking pawl which is axially displaceably arranged on the swivel lever and which interacts with a locking gear connected to the tensioning wheel axis and if the lever element has a curved surface for displacing the stop pin.
  • the stop pin lifts the latch out of its engagement with the latching gear when, when the pivoting lever is pivoted back, it reaches the cam surface on the lever element and slides along it before it comes into contact with the actuating surface. If the lever is swiveled again in the tensioning direction after lifting the pressure plate and inserting the strap ends between the pressure plate and tensioning wheel, the locking pawl only engages in the locking gear to turn the tensioning wheel when the stop pin no longer slides on the curved surface. This ensures that the pressure plate always presses completely and under full pressure against the tensioning roller before it can be rotated. Slipping of a strap end between the tensioning roller and pressure plate is thus avoided.
  • the lever element and the opening device are preferably coupled via a transmission gear. This makes it possible to achieve sufficiently large adjusting movements on the opening device even with small pivoting movements of the lever in order to lift the pressure plate from the tensioning wheel or the closing device from the strap ends to such an extent that the strap ends can be easily inserted and the device from the finished strapping can be easily removed.
  • the transmission gear expediently has a drive wheel which is connected in a rotationally fixed manner to the lever element and a driven wheel which is fastened to a drive shaft and which can be coupled to one another by an endless drive chain.
  • the drive chain which can preferably be a link chain, is inexpensive and easy to assemble. It is also possible to couple the drive and driven gear to a transmission gear instead of a chain.
  • the opening device advantageously has a swivel body arranged on the output shaft. which is provided with a pressure surface for an actuating plunger for lifting the closing device and with a stop element for lifting the pressure plate from the tensioning wheel. Due to the pressure surface on the one hand and the stop element on the other hand, the pressure plate and the closing device can be raised independently of one another. It is thus possible, after the band ends have been closed, to pivot the pivot lever only to the extent that only the closing device is lifted off the band ends by the actuating tappet actuated by the pressure surface. Only when the lever is pivoted further does the stop element become effective and lift the pressure plate off the tensioning wheel.
  • the pressure surface is expediently arranged on a pressure body and curved about an axis which runs parallel to the output shaft.
  • the pressure element is connected via an attenuator connected to the swivel body.
  • the curvature of the pressure surface ensures that the movement transmitted from the swivel lever to the swivel body is introduced into the actuating plunger without transverse forces.
  • the damping member between the pressure body and the swivel body which can consist of a hard rubber piece, prevents the actuating plunger from being pushed too far when the swivel lever is pivoted further beyond the amount required for lifting the closing device and the pressure plate.
  • the swivel body is expediently spring-loaded, as a result of which it automatically swivels back into its starting position when the swivel lever is swiveled in the tensioning direction and thereby also resets the lever element via the transmission.
  • the spring returning the swivel body to its initial position can e.g. be a torsion spring.
  • a particularly simple embodiment is obtained when a spring element engages the actuating plunger and presses it against the pressure surface on the swivel body under pretension.
  • 10 denotes a device for tensioning and closing plastic straps, with a housing 11, the rear housing part 12 of which has a handle 13 and has an insert 14 for a replaceable battery or a rechargeable accumulator 15.
  • the units for tensioning and closing a strapping placed around a package as well as a drive motor 17 and electrical switching and control elements, not shown.
  • the device 10 For tensioning the strap ends 18, 19 of the strapping, the device 10 has a tensioning wheel 20 which is positively connected to a rotary shaft 21 which is rotatably mounted in the front housing part 16 in two bearing blocks 22, 23 transversely to the longitudinal direction of the device. Between the bearing blocks 22, 23, a locking mechanism 24 is fixed, which cooperates with a ratchet gear 25 located on the shaft and ensures that the rotary shaft 21 with the tensioning wheel 20 can only be rotated in one direction.
  • the end 26 of the rotary shaft 21 opposite the tensioning wheel 20 protrudes from the housing 11.
  • a pivot lever 27 is attached to this end 26 and secured with a locking ring 28.
  • the pivot lever 27 has an inner bearing eye 29 and an outer bearing eye 30.
  • a locking gear 32 is rotatably mounted on the rotary shaft, which cooperates with a latch 33, which is arranged in the pivot lever 27 and under the action of a helical spring 34 against the Locking gear is pressed.
  • the detent pawl 33 is designed such that it allows the pivoting lever 27 to be pivoted on the rotary shaft 21 in the direction in which the rotary shaft 21 is locked by the locking mechanism 24.
  • the pivoting lever On its side facing the housing 11, the pivoting lever has an elongated hole 35 extending in the direction of the latching pawl 33, through which a cylindrical stop pin 36 is inserted into a transverse bore 37 on the latching pawl 33.
  • the stop pin 36 forms an actuating element 38 for a hook-like actuating surface 39 on a lever element 40, which is connected to a drive sprocket 41, which is freely rotatably mounted on the rotary shaft 21.
  • the drive sprocket 41 is coupled via a drive chain 42 to an output sprocket 43, which is non-rotatably connected to an output shaft 44 mounted in the housing 11 parallel to the rotary shaft 21.
  • a carrier 45 is pivotably arranged, on the lower end of which a projecting pressure plate 46 is fastened.
  • a spacer 47 is fastened to the carrier 45 in such a way that it can be moved parallel to the pressure plate.
  • the carrier is pulled by a strong tension spring 48 in the direction of the tensioning wheel 20, so that the pressure plate 46 presses against the tensioning wheel 20 from below via the spacer 47.
  • One band end 18 is clamped between the tensioning wheel and the spacer 47 and the other band end 19 between the spacer 47 and the pressure plate 46.
  • a swivel body 49 is also non-rotatably connected, on which a stop element 50 is provided which can engage a projecting hook 51 on the carrier 45. Furthermore, a pressure body 52 is attached to the swivel body 49 with the interposition of a damping member 53 made of hard rubber, which has a curved pressure surface 54 with an axis of curvature that runs parallel to the output shaft 44.
  • the unit for closing the strapping consists in the device essentially of a movable friction jaw 55 which can be pivoted back and forth about a vertical axis 59 by the drive motor 17 via a belt drive 56 and a crankshaft 57 with a connecting rod 58.
  • the movable friction jaw 55 has an approximately H-shaped shape in longitudinal section and overlaps with its two front legs 60, 61 a bearing block 62 in the housing 11, in which there is also the vertical axis 59 about which the Not only pivot the friction jaw 55, but can also move up and down in its longitudinal direction within certain limits.
  • a pressure roller 68 is rotatably mounted between the two rear legs 66 and 67, which consists of a ball-bearing ring.
  • a pressure lever 69 acts on this pressure roller 68, which is pivotably mounted in its lower end 70 about a pin 71 in the housing 11.
  • the pressure lever 69 also has at its lower end a forwardly projecting nose 72, with which it engages under the upper rear leg 66 projecting over the rear end face 64 and holds the movable friction jaw 55 in its upper, inactive position, in which it unites Leaves tape guide channel 73 between itself and an abutment plate 74 and does not act on the intermediate tape ends 18 and 19.
  • the pressure lever 69 is articulated by a hinge pin 76 to the rear part 77a of a hinge lever 77, the front part 77b of which is pivotably mounted on a horizontal pivot axis 78 in the housing 11 and extends forwardly beyond this pivot axis 78.
  • a tension spring 80 engages, which is attached to the housing 11 and strives to pull the front end 79 of the articulated lever 77 downward and thereby to pivot the articulated lever 77 counterclockwise about its pivot axis 78.
  • the front part 77b of the articulated lever 77 strikes a stop 82. In this position, the articulated lever 77 acts like a rigid strut which holds the pressure lever 69 in a position in which the friction jaw 55 is lifted off the abutment plate 74.
  • the strong tension spring 48 fastened to the carrier 45 acts on the hinge pin 76 of the pressure lever 69.
  • the pressure lever 69 has a button 83 for an actuating plunger 84 which is mounted in a longitudinally displaceable manner in the housing 11 and is pressed by a compression spring 85 against the pressure surface 54 on the swivel body 49.
  • a release lever 86 is mounted on the pivot axis 78, which passes through the upper housing cover 87 and, when actuated, presses on the front part 77b of the articulated lever 77 via a projection (not shown) and swung it clockwise.
  • the lever element 40 has a curved surface 88, the distance r of which from the axis of the rotary shaft 21 increases towards the actuating surface 39.
  • the device works as follows:
  • the pivot lever 27 is pivoted back in the direction of the handle 13. In this pivoting direction, the latching pawl 33 and the latching gear 32 allow the lever 27 to be pivoted freely, while the rotary shaft 21 is locked in this direction of rotation by the latching mechanism 24.
  • the pivot lever 27 is then released, the actuating plunger 84 being automatically pushed back by the compression spring 85 and pivoting the pivot body 49 into its starting position.
  • the pressure plate 46 and the spacer 47 are pulled against the tensioning wheel by the strong tension spring 48 acting on the carrier 45 and clamp the band ends 18, 19 between themselves and the tensioning wheel 20.
  • the swivel lever 27 To tension the band ends 18 and 19 against one another, the swivel lever 27 must first be pivoted so far that the stop bolt 36 no longer abuts the curved surface 88 and the latching pawl 33 can engage in the latching gear 32. Only then is the lever 27 in a positive connection with the rotary shaft 21 and turns the tensioning wheel 20, which pulls the upper strap end 18 of the strapping strap through the device in the direction of arrow 91 and puts the strapping under tension. If the desired tension cannot be reached by swinging the lever 27 forward once, the pivot lever 27 can be pivoted back a little, the latching mechanism 24 holding the rotary shaft 21 of the tensioning wheel 20 in place.
  • the user of the device can actuate the release lever 86.
  • the joint 81 of the articulated lever 77 bends downward, so that the pressure lever 69 loses its support at the upper end 75 and is pivoted forwards counterclockwise under the action of the strong tension spring 48.
  • the nose 72 releases the movable friction jaw 55 and the lower end 70 of the pressure lever 69 presses on the pressure roller 68 mounted on the end face 64 of the friction jaw 55, as a result of which the friction jaw 55 is pressed onto the band ends 18, 19 lying in the band guide channel.
  • the drive motor 17 is switched on via a switch (not shown) and moves the friction jaw back and forth so that it takes the upper end of the belt 18 with it and moves it over the lower end of the belt.
  • frictional heat is generated in a known manner, whereby the surfaces of the strip ends rubbing against each other are softened and thus form a fusion bond.
  • the drive motor 17 for the friction jaw 55 is controlled by a timer which causes the motor to reciprocate the friction jaw 55 until the frictional heat required for the welding has been generated between the band ends 18, 19. After the time switch expires, the drive motor 17 switched off and the friction jaw 55 stops and presses the band ends 18, 19 firmly against each other, so that they weld in the heated area and connect tensile.
  • the pivot lever 27 is pivoted again, as already described, in the direction of the handle 13.
  • the actuating plunger 84 presses against the button 83 on the pressure lever 69 and pushes it clockwise to the rear, so that the projecting nose 72 at the lower end 70 of the pressure lever engages under the upper, rear leg 66 of the friction jaw 55 and lifts it up and so on the band ends are welded together.
  • the articulated lever 77 is brought back into its starting position shown in FIG. 1 and held in this position by the tension spring 80 against the stop 82, as a result of which the friction jaw 55 is securely held in its raised position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Fixing For Electrophotography (AREA)
  • Binders And Loading Units For Sheaves (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Seal Device For Vehicle (AREA)
  • Discharge Heating (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP94929487A 1993-10-21 1994-10-18 Vorrichtung zum spannen und verschliessen von umreifungsbändern Expired - Lifetime EP0723512B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430055T SI0723512T1 (en) 1993-10-21 1994-10-18 Device for tensioning packing straps and securing the ends together

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9316072U 1993-10-21
DE9316072U DE9316072U1 (de) 1993-10-21 1993-10-21 Vorrichtung zum Spannen und Verschließen von Umreifungsbändern
PCT/DE1994/001234 WO1995011163A1 (de) 1993-10-21 1994-10-18 Vorrichtung zum spannen und verschliessen von umreifungsbändern

Publications (2)

Publication Number Publication Date
EP0723512A1 EP0723512A1 (de) 1996-07-31
EP0723512B1 true EP0723512B1 (de) 1997-06-11

Family

ID=6899705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94929487A Expired - Lifetime EP0723512B1 (de) 1993-10-21 1994-10-18 Vorrichtung zum spannen und verschliessen von umreifungsbändern

Country Status (16)

Country Link
US (1) US5689943A (fi)
EP (1) EP0723512B1 (fi)
JP (1) JPH09503982A (fi)
AT (1) ATE154309T1 (fi)
BR (1) BR9407873A (fi)
CZ (1) CZ106796A3 (fi)
DE (2) DE9316072U1 (fi)
DK (1) DK0723512T3 (fi)
ES (1) ES2102255T3 (fi)
FI (1) FI961710A0 (fi)
HR (1) HRP940687B1 (fi)
HU (1) HUT73467A (fi)
RU (1) RU2118277C1 (fi)
SK (1) SK48196A3 (fi)
WO (1) WO1995011163A1 (fi)
ZA (1) ZA948241B (fi)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944944A (en) * 1997-10-07 1999-08-31 Gwo-Jiang; Liaw Structural improvement of banding gun
ATE237500T1 (de) * 1998-10-29 2003-05-15 Orgapack Gmbh Umreifungsgerät
DE19909620A1 (de) * 1999-03-05 2000-09-07 Cyklop Gmbh Vorrichtung zum Spannen und Verschließen von Umreifungsbändern
DE10026200A1 (de) * 2000-05-26 2001-11-29 Cyklop Gmbh Vorrichtung zum Spannen von Umreifungsbändern
US7073431B1 (en) * 2005-05-18 2006-07-11 Yu-Fu Chen Structure portable strapping machine
CN201411061Y (zh) * 2008-04-23 2010-02-24 奥格派克有限公司 带有传动装置的捆扎设备
US9284080B2 (en) * 2008-04-23 2016-03-15 Signode Industrial Group Llc Mobile strappiing device
US11999516B2 (en) 2008-04-23 2024-06-04 Signode Industrial Group Llc Strapping device
US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
US9315283B2 (en) 2008-04-23 2016-04-19 Signode Industrial Group Llc Strapping device with an energy storage means
US9193486B2 (en) 2008-04-23 2015-11-24 Signode Industrial Group Llc Strapping device with a tensioner
ES2861948T3 (es) * 2008-04-23 2021-10-06 Signode Int Ip Holdings Llc Dispositivo de flejado con un accionamiento eléctrico
KR101145021B1 (ko) * 2010-02-18 2012-05-11 (주)포스코엠텍 코일 포장재의 벤딩장치
US8640612B2 (en) * 2011-10-05 2014-02-04 Hsiu-Man Yu Chen Pneumatic packaging apparatus
CH705743A2 (de) 2011-11-14 2013-05-15 Illinois Tool Works Umreifungsvorrichtung.
JP6329151B2 (ja) 2012-09-24 2018-05-23 シグノード インターナショナル アイピー ホールディングス エルエルシー バンド掛け装置
CH708294A2 (de) 2013-05-05 2014-12-15 Orgapack Gmbh Umreifungsvorrichtung.
PL3105126T3 (pl) 2014-02-10 2018-11-30 Orgapack Gmbh Urządzenie napinające dla urządzenia taśmującego
USD864688S1 (en) 2017-03-28 2019-10-29 Signode Industrial Group Llc Strapping device
US11174051B2 (en) * 2019-02-15 2021-11-16 Samuel, Son & Co. (Usa) Inc. Hand held strapping tool
US20230150704A1 (en) * 2020-07-13 2023-05-18 Signode Industrial Group Llc Strapping tool

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1313495A (en) * 1969-07-24 1973-04-11 Payne P P Ltd Tools for banding packages or the like
US4313779A (en) * 1979-07-30 1982-02-02 Signode Corporation All electric friction fusion strapping tool
DE3118710A1 (de) * 1981-05-12 1982-12-09 Cyklop International Emil Hoffmann KG, 5000 Köln Vorrichtung zum spannen, verschliessen und abschneiden von kunststoffbaendern fuer packstueckumreifungen
DE3118711A1 (de) * 1981-05-12 1982-12-02 Cyklop International Emil Hoffmann KG, 5000 Köln Vorrichtung zum spannen eines umreifungsbandes
DE3121100A1 (de) * 1981-05-27 1982-12-23 Hemarklaus AG, 6074 Giswil, Obwalden "einrichtung fuer packgutumreifungsgeraete"
CH665604A5 (de) * 1985-01-23 1988-05-31 Strapex Ag Spann- und verschliessgeraet fuer kunststoffband.
ATE95475T1 (de) * 1988-09-08 1993-10-15 Strapex Ag Spann- und verschliessgeraet fuer ein umreifungsband aus kunststoff.
DE9314790U1 (de) * 1993-09-30 1993-12-16 Cemco Herbert Schulte GmbH, 57489 Drolshagen Vorrichtung zum Verschließen von Umverpackungen

Also Published As

Publication number Publication date
HRP940687A2 (en) 1996-10-31
BR9407873A (pt) 1996-10-29
CZ106796A3 (en) 1997-07-16
DE9316072U1 (de) 1994-01-05
WO1995011163A1 (de) 1995-04-27
SK48196A3 (en) 1997-04-09
FI961710A (fi) 1996-04-19
ZA948241B (en) 1995-06-13
FI961710A0 (fi) 1996-04-19
US5689943A (en) 1997-11-25
DE59403137D1 (de) 1997-07-17
RU2118277C1 (ru) 1998-08-27
JPH09503982A (ja) 1997-04-22
ES2102255T3 (es) 1997-07-16
EP0723512A1 (de) 1996-07-31
HRP940687B1 (en) 1998-02-28
HUT73467A (en) 1996-08-28
ATE154309T1 (de) 1997-06-15
DK0723512T3 (da) 1997-07-14

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