Nothing Special   »   [go: up one dir, main page]

EP0720948A1 - Dispositif de cerclage d'emballages, en particulier des paquets de magazines - Google Patents

Dispositif de cerclage d'emballages, en particulier des paquets de magazines Download PDF

Info

Publication number
EP0720948A1
EP0720948A1 EP95120485A EP95120485A EP0720948A1 EP 0720948 A1 EP0720948 A1 EP 0720948A1 EP 95120485 A EP95120485 A EP 95120485A EP 95120485 A EP95120485 A EP 95120485A EP 0720948 A1 EP0720948 A1 EP 0720948A1
Authority
EP
European Patent Office
Prior art keywords
strapping
clamping
band
plunger
welding
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Withdrawn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
EP95120485A
Other languages
German (de)
English (en)
Inventor
Eberhard Kolb
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.)
SMB Schwede Maschinenbau GmbH
Original Assignee
SMB Schwede Maschinenbau 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 SMB Schwede Maschinenbau GmbH filed Critical SMB Schwede Maschinenbau GmbH
Publication of EP0720948A1 publication Critical patent/EP0720948A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive

Definitions

  • the invention relates to a device for strapping packaged goods with a strapping, in particular a transverse strapping machine for magazine stacks, with the features specified in the preamble of claim 1.
  • Strapping devices of this type conventionally have a machine table, an essentially vertical strap guide frame arranged thereon, in which the strapping strap can be passed around the stack as a loose loop, a shooting device for shooting the strap into the strap guide frame, a retraction device for pulling the strap around the stack of objects and a welding head with a clamping device for welding and fixing the strapping during retraction, welding and severing of the strapping from the supply of straps.
  • the known clamping devices of conventional welding heads have three plungers located one behind the other in the shooting-in direction of the strapping band, namely a first clamping plunger for fixing the free end of the inserted strapping band, a second clamping plunger for fixing the strapping band section overlapping with the free end in the tightened state and an auxiliary plunger assigned to the welding jaws Acting on the strapping sections to be welded together in a taut state.
  • the three plungers are each slidably mounted separately in the welding head and each is motion-controlled with its own drive in the form of an electrical, hydraulic, pneumatic or mechanical drive operating with the aid of a cam control. Due to the three plungers, this welding head has a relatively large overall length, so that in the case of a transverse strapping machine, very narrow stacks of objects, such as e.g. thin square strips, can no longer be strapped. In addition, it is disadvantageous that the control and sliding guidance of the three immediately adjacent plungers is structurally complex.
  • the object of the invention is to improve a strapping device of the generic type in such a way that its welding head has a more compact construction and is simpler in terms of construction for the actuation and sliding guidance of the plunger.
  • the welding head according to the invention is particularly compact due to the arrangement of the second clamping plunger within the first clamping plunger and its displaceable guidance therein. It practically saves the overall length for a plunger. Various advantages are achieved through this compactness. In this way, very narrow packaged goods can be strapped.
  • the strapping machine can also be used universally for a wide variety of bandwidths.
  • the specified arrangement creates the prerequisite for the first and second clamping tappets to be able to be controlled in their clamping movements jointly by means of a single control drive, for example a common cam control by means of a control disk. This considerably reduces the design effort for the control. It also saves a significant number of moving parts for the machine. Last but not least, it has been shown that the machine according to the invention can be manufactured with relatively large manufacturing tolerances without losing its functionality.
  • the transverse strapping machine 1 which is used for the transverse strapping of a stack of magazines 2, has a machine frame 4 which is mounted on rollers 3 and which is provided with a machine table 5 at the top.
  • a vertically directed strap guide frame 6 is arranged on this, which spans the strapping plane U.
  • the magazine stack 2 can be moved in the insertion direction E into the clear opening 7 of the belt guide frame 6 and moved out of it again by conveyor belts (not shown).
  • a supply roll 8 of the strapping band 9 is rotatably mounted, which is gradually withdrawn as needed via a deflection roller 10 and a dancer lever 11 from a pair of take-off rolls 12 into the belt supply store 13 in the machine frame 4.
  • the strapping band 9 is inserted in the usual manner by means of a shooting device 14 into the welding head designated as a whole as 15 and on both sides thereof in the strapping plane U in the machine table 5 and tape guide frame 6 running tape guide channel 16 shot until the free end 17 comes to rest in the welding head 15 and overlaps with the strapping section 18 located below.
  • the strap guide channel 16 as is indicated in its course by the strapping strap 9 shown in dash-dot lines, is formed in the usual manner in the machine table 5 and strap guide frame 6 and requires no further discussion.
  • the welding head 15 When the strapping is pulled tight, the welding head 15 is then actuated in a manner to be discussed in more detail in order to fix the strapping loop loop stretched around the magazine stack 2 by welding and to separate it from the strapping band 9 entering the welding head 15. Then the finished strapped magazine stack 2 is transported out of the tape guide frame 6 in the insertion direction E.
  • the welding head 15 has a clamping device 21 which has a first clamping plunger 22 for fixing the free end 17 of the strapping band 9 inserted, a second clamping plunger 23 for fixing the strapping band section 18 which overlaps with the free end 17 in the tightened state, and an auxiliary plunger 24 for loading the strapping strap sections 25, 26 to be welded together in the taut state.
  • the first clamping plunger 22 and the auxiliary plunger 24 are arranged one behind the other in the strapping plane U. and in each case in schematically indicated guide parts 27, 28 on the machine frame 4 below the machine table 5 in the clamping direction K slidably.
  • the second clamping plunger 23 is arranged within the first clamping plunger 22 and is displaceable therein in the clamping direction K relative to the latter.
  • the first clamping plunger 22 is designed as a square profile which has a transverse wall 29 in the middle over its length. This is provided with a guide opening 30 in which the shaft 31 of the second clamping plunger 23 is slidably mounted.
  • the head 32 of the second clamping plunger 23 lies within the cavity 34 facing the upper end 33 of the first clamping plunger 22.
  • the shaft 31 of the second clamping plunger 23 continues into a fork-shaped joint head 35 which has two lateral, transverse to the strapping plane U. Cheeks 36, 37 has.
  • an axis 38 is inserted between the two cheeks 36, 37, on which a sleeve 39 is rotatably seated.
  • the joint head 35 serves to connect the first and second clamping plungers 22, 23 to a common control drive 40 for controlling the movement of the two plungers, as will be explained in more detail below.
  • the first clamping plunger 22 has two lateral stops 42, 43 on its upper end face, which are formed by corresponding extensions of the side walls 44, 45 running parallel to the strapping plane U with respect to the side walls 46, 47 of the plunger 22 running at right angles thereto. Above these stops 42, 43 there is a clamping tongue 48 which engages from the side at right angles to the strapping plane U in the welding head 15 and which cooperates with a pressure plate 49 in the welding head 15 in the manner of pliers. Between the clamping tongue 48 and the pressure plate 49, a helical compression spring 50 is inserted into corresponding pockets 51, 52 in the clamping tongue 48 and the pressure plate 49, which presses the clamping tongue 48 and the pressure plate 49 apart.
  • the control drive 40 for the two clamping plungers 22, 23 has a control lever 53 designed as an operating lever, which is pivotably mounted in the welding head unit via a pivot axis 54 running parallel to the strapping plane U.
  • the horizontal lever arm 55 engages with its rounded head end 56 between the cheeks 36, 37 of the joint head 35.
  • the vertical lever arm 57 is provided approximately in the middle with a roller 58 which rolls on the outer circumference of a control disk 59.
  • the control disk 59 is rotatably mounted on a shaft 60 which is driven by a control motor, not shown.
  • a helical tension spring 61 is suspended, which is mounted on the machine frame 4 and acts on the control lever 53 in a clockwise direction with respect to FIG. 3, so that, as a rule, the roller 58 bears non-positively on the outer circumference of the control disk 59.
  • Their outer circumference is designed in the manner of a control curve 62 with three control sections 63, 64, 65 of different radii.
  • auxiliary plunger 24 In the insertion direction S in front of the assembly of the first and second clamping plungers 22, 23 is the auxiliary plunger 24, which has at its lower end a joint head 35 'corresponding to the joint head 35 of the second clamping plunger 23 with cheeks 36', 37 ', axis 38' and sleeve 39 ' having. Also in accordance with the second clamping plunger 23, the movement of the auxiliary plunger 24 is controlled by a control drive 40 ', which has a control lever 53' with pivot axis 54 ', horizontal lever arm 55' and vertical lever arm 57 '.
  • the control lever 53 ' is kept in constant contact with the outer circumference of the control disk 59' via a roller 58 'via a helical tension spring 61', which is also seated on the shaft 60 'in a rotationally fixed manner.
  • the outer circumference of the disk 59 ' is in turn designed as a control cam 62' which has control sections 63 ', 64', 65 'and 66' of different radii distributed over its circumference.
  • a guide plate 67 which can be displaced transversely to the strapping plane and whose edge pointing counter to the weft direction S is wedge-shaped.
  • the pressure plate 49 also extends into the area above the guide plate 67.
  • a cutting device 69 is provided for separating the welded strapping band 9 from the band supply, which has a movable knife jaw 70 arranged on the auxiliary plunger 24 and a counter knife jaw 71 arranged in a fixed position on the guide part 27.
  • the latter has a wedge-shaped passage opening 72 narrowing in the weft direction S for the strapping band 9 entering the welding head 15, which forms a cutting edge 73 which interacts with the movable knife jaws 70.
  • the movable knife jaw 70 is constantly acted upon in the direction of the counter knife jaw 71 by two small coil springs 78, which are accommodated in corresponding recesses 79 in the auxiliary tappet 24.
  • a welding tongue 74 which can also be displaced transversely to the strapping plane U is provided on the side thereof.
  • the strapping band 9 is inserted in the weft direction S through the lower gap 76 further into the band guide channel 16 in the band guide frame 6, where it is loosely guided around the magazine stack 2, which is indicated in a reduced manner in FIGS. 2, 4, ... until it runs into the upper gap 75.
  • the pair of insertion rollers 19 is put out of operation. Then will by the machine control, not shown, the shaft 60 is rotated clockwise, so that the roller 58 dips into the control section 64 of the control cam 62 and the control lever 53 is pivoted by a small angle (Fig. 4, 5).
  • the first and second clamping plungers 22, 23 are pushed up a small distance, these two plungers not changing their relative position to one another due to the helical compression spring 41, but rather the clamping tongue 48 by means of the action by the first clamping plunger 22 via the stops 42, 43 clamping the free end 17 of the strapping 9 against the pressure plate 49.
  • the helical compression spring 50 which is weaker than the helical compression spring 41, is compressed. The free band end 17 is thus held between the clamping tongue 48 and the pressure plate 49.
  • the pair of return rollers 20 is actuated so that the strapping band 9 is pulled out of the band guide channel 16 and placed tightly around the magazine stack 2.
  • the control disk 59 has rotated further, so that the roller 58 finally dips into the control section 65 and the control lever 53 is pivoted further clockwise with respect to FIG. 7 due to the action of the helical compression spring 61. Since the first clamping plunger 22 is already in a stop position, the second clamping plunger 23 is thereby displaced upward relative to the first clamping plunger 22 against the action of the helical compression spring 41 and clamps the strapping section 18 against the clamping tongue 48 with its end face, so that the strapping band 9 is fixed in a taut condition.
  • control drive 40 works non-positively due to the springs 41, 50 and 61, so that a fixing effect occurs regardless of the thickness of the strapping band 9.
  • control lever 53 could in the position shown in FIG Swing control section 65, as is made clear by the distance a in Fig. 7 between the roller 58 and the control section 65.
  • the auxiliary tappet 24 remains in its retracted position, in which the roller 58 'runs along the control section 63'.
  • the guide plate 67 then moves out of the strapping band sections 25, 26 to be welded in front of the auxiliary tappet 24 and synchronously the welding tongue 74 between these two sections 25, 26 (FIGS. 8, 9).
  • the control discs 59, 59 ' continue to rotate, so that the roller 58' of the control lever 53 'dips into the control section 64' and pushes the auxiliary tappet 24 upward.
  • the two strapping strap sections 25, 26 to be welded are brought into intimate contact with the welding tongue 74, which ensures that these strap sections 25, 26 are heated and inclined.
  • the auxiliary tappet 24 is then briefly pushed back downward by the control section 65 '(FIGS. 10, 11) and the welding tongue 74 is retracted again.
  • the two clamping plungers 22, 23 can be actuated in a simple manner in terms of construction and control technology by a common control drive 40.
  • a control drive is saved compared to the welding heads according to the prior art.
  • the welding head 15 is very compact due to the integration of the second clamping plunger 23 in the first clamping plunger 22.
  • Another advantage is that the cutting edge 73 of the cutting device 69 is arranged on the fixed counter knife jaw 71. As a result, the entire width of the movable knife jaw 70 can also weld the straps 25, 26 to be welded. There is therefore no loose, protruding part at the end of the separated strapping section 26.
  • the clamping tongue 48 due to the clamping tongue 48, a pull tab that is always the same size and has an optimal length remains at the free end 17.
  • the pressure plate 49 can be guided optimally so that it is supported securely over at least 3 points, generally over 4 points, during the welding process.
  • the welding point is located at the intersection of the diagonals of the 4 support points, so that, in the long run, parallelism of the pressure plate 49 with the end face of the auxiliary tappet 24 is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP95120485A 1995-01-04 1995-12-22 Dispositif de cerclage d'emballages, en particulier des paquets de magazines Withdrawn EP0720948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19500086 1995-01-04
DE1995100086 DE19500086A1 (de) 1995-01-04 1995-01-04 Vorrichtung zum Umreifen von Packgut mit einem Umreifungsband, insbesondere Querumreifungsmaschine für Zeitschriftenstapel

Publications (1)

Publication Number Publication Date
EP0720948A1 true EP0720948A1 (fr) 1996-07-10

Family

ID=7750965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120485A Withdrawn EP0720948A1 (fr) 1995-01-04 1995-12-22 Dispositif de cerclage d'emballages, en particulier des paquets de magazines

Country Status (2)

Country Link
EP (1) EP0720948A1 (fr)
DE (1) DE19500086A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1002720A3 (fr) * 1998-11-20 2000-09-27 Sander GmbH Dispositif pour raccorder les extrémités d'un lien de cerclage dans des machines de cerclage
EP1090708A2 (fr) * 1999-10-08 2001-04-11 SMB SCHWEDE MASCHINENBAU GmbH Tête de soudage pour une machine de cerclage
EP4345014A1 (fr) * 2022-07-21 2024-04-03 Abb Schweiz Ag Ensemble de serrage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771436A (en) * 1970-12-26 1973-11-13 Ikegai Iron Works Ltd Device for cutting and welding plastic band for use in automatic strapping machine
US3847071A (en) * 1971-11-15 1974-11-12 Fmc Corp Strapping machine feed
NL7502847A (en) * 1975-03-11 1976-09-14 Andriessen Tech Nv Longitudinally joining strips of thermoplastic material - by developing frictional heat during transverse removal of third strip from overlapping places
EP0195305A1 (fr) * 1985-03-05 1986-09-24 Signode Corporation Procédé et appareil pour thermosoudage d'un ruban de cerclage dans une machine à cercler
US4776905A (en) * 1986-06-06 1988-10-11 Signode Corporation Method and apparatus for producing a welded joint in thermoplastic strap

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134800B2 (fr) * 1972-12-19 1976-09-28
DE3220445C2 (de) * 1982-05-29 1985-10-17 Hoesch Ag, 4600 Dortmund Vorrichtung zum Spannen eines um ein Packstück gelegten Umreifungsbandes und zum Verbinden der sich überlappenden Enden des Umreifungsbandes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771436A (en) * 1970-12-26 1973-11-13 Ikegai Iron Works Ltd Device for cutting and welding plastic band for use in automatic strapping machine
US3847071A (en) * 1971-11-15 1974-11-12 Fmc Corp Strapping machine feed
NL7502847A (en) * 1975-03-11 1976-09-14 Andriessen Tech Nv Longitudinally joining strips of thermoplastic material - by developing frictional heat during transverse removal of third strip from overlapping places
EP0195305A1 (fr) * 1985-03-05 1986-09-24 Signode Corporation Procédé et appareil pour thermosoudage d'un ruban de cerclage dans une machine à cercler
US4776905A (en) * 1986-06-06 1988-10-11 Signode Corporation Method and apparatus for producing a welded joint in thermoplastic strap

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1002720A3 (fr) * 1998-11-20 2000-09-27 Sander GmbH Dispositif pour raccorder les extrémités d'un lien de cerclage dans des machines de cerclage
EP1090708A2 (fr) * 1999-10-08 2001-04-11 SMB SCHWEDE MASCHINENBAU GmbH Tête de soudage pour une machine de cerclage
EP1090708A3 (fr) * 1999-10-08 2002-01-09 SMB SCHWEDE MASCHINENBAU GmbH Tête de soudage pour une machine de cerclage
US6403917B1 (en) 1999-10-08 2002-06-11 Smb Schwede Maschinenbau Gmbh Welding head for a looping machine
EP4345014A1 (fr) * 2022-07-21 2024-04-03 Abb Schweiz Ag Ensemble de serrage

Also Published As

Publication number Publication date
DE19500086A1 (de) 1996-07-11

Similar Documents

Publication Publication Date Title
DE2704540C2 (fr)
DE2324293C3 (de) Vorrichtung zum Umschnüren eines Ballens o.dgl
DE2840944A1 (de) Verfahren und maschine zum umschnueren eines gegenstandes
DE69311687T2 (de) Vorrichtung zum Steuern der Streifenzufuhr in einer Umreifungsmaschine
CH635236A5 (de) Verfahren und vorrichtung zum aufbringen eines verstaerkungsbandes auf einen reissverschluss mit einem trennbaren endglied.
DE3444391C2 (fr)
DE1586072B1 (de) Vorrichtung zum Umschnueren von Buendeln oder Ballen mittels eines Bandes
EP1541470B1 (fr) Dispositif pour appliquer une bande de cerclage longitudinale autour d'un objet, comme en particulier une pile de journaux ou magazines
DE68912280T2 (de) Klebestreifen-Anbringeinheit für Pappschachtelklebestreifen-Anbringmaschinen mit einer verbesserten Rückstellbewegung der Eingangsandruckrolle.
DE68912965T2 (de) Vorrichtung für das Verschliessen der oberen Seitenklappen einer Schachtel mit Klappen, die übergeschlagen werden können, insbesondere für sehr lange Schachteln.
EP0680881B1 (fr) Dispositif pour banderoler des objets
EP1243509B1 (fr) Machine de cerclage avec cadre divisible de guidage de bande
EP1517836B1 (fr) Dispositif de cerclage
EP0720948A1 (fr) Dispositif de cerclage d'emballages, en particulier des paquets de magazines
DE2643533A1 (de) Muenzeneinwickelmaschine
DE3032642A1 (de) Umschnuermaschine
DE2818325C2 (de) Bindemaschine
EP0413160A1 (fr) Appareil pour la mise sous tension d'une bande autour d'un paquet
DE4120440A1 (de) Verfahren, magazinstrang und vorrichtung zum anbringen von u-foermigen biegeklammern
EP3391729B1 (fr) Presse à balles
CH673483A5 (fr)
DE3904884C2 (de) Vorrichtung zur Herstellung von aus Kunststoffband bestehenden und um Packstücke gespannten Umreifungen
DE4035967C2 (de) Vorrichtung zum Umschlingen und Spannen eines Bandes um einen Gegenstand
DE2644892B2 (de) Maschine zum Verpacken von Kaugummistreifen
EP0847922B1 (fr) Dispositif de cerclage de paquets

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19970110