EP0544066B1 - Verfahren und Vorrichtung zur Vermeidung von umreifungsmittelbedingten Betriebsunterbrechungen an Maschinen zum Umreifen von Packstücken - Google Patents

Verfahren und Vorrichtung zur Vermeidung von umreifungsmittelbedingten Betriebsunterbrechungen an Maschinen zum Umreifen von Packstücken Download PDF

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Publication number
EP0544066B1
EP0544066B1 EP92114704A EP92114704A EP0544066B1 EP 0544066 B1 EP0544066 B1 EP 0544066B1 EP 92114704 A EP92114704 A EP 92114704A EP 92114704 A EP92114704 A EP 92114704A EP 0544066 B1 EP0544066 B1 EP 0544066B1
Authority
EP
European Patent Office
Prior art keywords
strapping
machine
infeed device
guideways
reel
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
EP92114704A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0544066A1 (de
Inventor
Karl-Hans Schüttler
Karl Schurig
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.)
Signode Packaging Systems GmbH
Original Assignee
Signode Bernpak 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 Signode Bernpak GmbH filed Critical Signode Bernpak GmbH
Publication of EP0544066A1 publication Critical patent/EP0544066A1/de
Application granted granted Critical
Publication of EP0544066B1 publication Critical patent/EP0544066B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • 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

Definitions

  • the invention initially relates to a method for avoiding operational interruptions due to strapping means on machines for strapping packages, in accordance with the features of the preamble of independent patent claim 1.
  • the invention is therefore based on DE-A-38 25 668, which relates to a method for eliminating or preventing strapping-related malfunctions in such machines.
  • the strapping material in the machine primarily thermoplastic plastic band or steel band - is pulled out of the machine in the event of a malfunction against the feed direction of the strapping material by the return of the strapping roll. It is therefore not necessary to laboriously work in the machine when eliminating a strapping-related malfunction, but the strapping material can be prepared more quickly outside the machine for a new shot. With the known method, an interruption in operation is shortened in time.
  • the invention solves this problem with the features of the independent claim 1, that is to say by a method which is characterized by providing a second strap winding with a second strap, providing a second strap guide track and an associated second strap feed for the second strap and thereby that the beginning of the stocked strapping in each of the two strapping guideways is always kept in a waiting position, from which it is removed after removing the other strapping from the other strapping guideway, by means of the second strapping feed, possibly "at the push of a button” , is fed automatically.
  • the machine in the event of a malfunction due to strapping means, can automatically pull the defective strapping means out of the machine and continue its operating state with the second strapping means without the intervention of the personnel.
  • Operating interruptions due to strapping now only need to take a long time until the strapping material in the machine has been pulled out of the machine, because - after this has happened - the beginning of the strapping material of the other strapping material that is already in the waiting position can be fed to the strapping cycle, in fact automatically. This shortens the duration of the business interruption by the time that was otherwise necessary to repair the beginning of the strapping tool. During this time, the machine is already working with the second strapping tool. Incidentally, this has the advantage that the work on the damaged strapping tool can take time for special care of his activity.
  • a strapping-related business interruption also occurs when the strapping stock of a strapping winding has been used up.
  • the method according to the invention leads to the same advantages, because a new strap can be exchanged with the other strap during operation and the new strap can be brought into its ready position according to the invention.
  • JP-A-12 13 107 it is known to have a second strap with a second strap ready on a strap strapping machine in order to be able to quickly reload the second strap into the machine for further processing after the first strap has been used up, but the known one is Procedure very different from that of the invention.
  • the beginning of the second tape is entered into the entrance to a chamber forming a tape store.
  • Fig. 1 of JP-A-12 13 107 it can be seen that there is only a single feed to the chamber, which consequently must be shared between the band still in operation and the beginning of the new band just entered. Therefore, the beginning of the replacement strapping can not always be kept ready, but can only be inserted when the other strap is used up.
  • the new tape is then advanced to a certain point on the guide.
  • a sensor now detects the end of the strap and registers the lack of a sufficient amount of this strapping agent, which was previously in operation.
  • the tape is then pulled back to a certain position, now a guide is forcibly in the area of the closure unit adjusted and at the same time that a tape guide is released, the tape residue is ejected from the machine by means of a complex reject device.
  • the constant availability of the second strapping means in a second strapping means guideway and the provision of an associated second strapping means feed for the second strapping means are the essential prerequisites for solving the underlying task of significantly minimizing the duration of business interruptions.
  • the invention then relates to a machine for strapping packages with a rotatably driven and possibly brakable strapping and with a conveyor for the strapping.
  • the task is to provide such a machine whose capacity is increased due to time minimization of interruptions due to strapping.
  • the invention solves this aspect of the device in that the conveyor is preceded by a switch with two strapping means guideways for each initial section of the two strapping means and with a strapping feed for alternative introduction of one of the two strapping means beginnings into the conveyor.
  • the switch controls the two strapping means in such a way that - depending on the setting of the switch - one of the two strapping means is gripped by the conveyor, while the other is immediately ready for use.
  • the invention has the essential advantage that when an interruption occurs in the event of a defect or malfunction in the running of the one strapping means, almost immediately, i.e. after it has been pulled out of the machine, the packaging cycle can be continued with the initial section of the second strapping means located in the strapping feed.
  • the switch ensures, by means of its controllability, that the "reserve" start of one strapping tool cannot inadvertently get in the way of the strapping tool being processed.
  • the switch upstream of the conveyor is arranged so that the two strapping guide tracks from two spatially separated strapping insertion gaps to the conveyor and the strapping feed is arranged near the strapping insertion gaps.
  • the strapping feed feed acts alternatively on the strapping means located in one or in the other strapping means guideway, possibly from an operative position.
  • the respective beginning of the strapping means in the strapping means guideways is advantageously moved into the conveyor device by means of only one strapping feed.
  • a strapping machine On the machine housing 11 of a strapping machine, generally designated 10, there is an essentially closed strapping guide channel 12, through which and around a packaged product, not shown, a strapping device 13 is fed to a closure unit 14.
  • the strapping means 13 - usually a strap made of thermoplastic or steel - is stored outside the machine housing 11 on two strapping coils 15 and 16 which are rotatably mounted on shafts or supporting axes 17 which are horizontally arranged on the machine housing 11. Between the strapping coils 15 and 16, also on the machine housing 11, a drive 18 assigned to the coils is arranged on a swivel arm 19.
  • the reference number 20 designates a strapping material store, which in the exemplary embodiment is designed as a box storage device, with an internal clearance that is only slightly larger than the strapping means 13.
  • the strapping means 13 is conveyed into the strapping means store 20 with the aid of storage filling conveyor rollers 21.
  • Strapping agent retraction rollers 22 are arranged behind the strapping means storage 20 in the conveying direction of the strapping means, these in turn being preceded by strapping agent weft rollers 23.
  • the roles mentioned 21, 22 and 23 are designed as friction strapping pairs of rollers.
  • 24 is a strapping device tensioner, which plays no further role here.
  • the storage filling conveyor rollers 21 is preceded by a switch 26 comprising two strapping means guideways 25. While the strapping means guideways 25 converge in the area of the storage filling conveyor rollers 21, their free rear ends form the strapping means insertion gaps 27 for the strapping means 13.
  • a strapping feed 28 Arranged in the area of the insertion gap 27 is a strapping feed 28 which consists of two fixedly arranged rollers 29 and two pivotable rollers 30 which are coupled to one another in the manner of a belt drive.
  • each strapping guide 25 is assigned a strapping detector 31.
  • a deflection roller 32 is also attached to the machine housing 11 between each strap winding 15, 16 and the associated strap insertion gap 27.
  • each strapping roll 15, 16 is assigned a photocell 33.
  • 34 schematically illustrates a reflective surface on each strapping core 35 which may be formed by the core material itself.
  • the strapping machine 10 is started up for the first time as follows. First, both initial sections of the strapping means 13 through the deflection rollers 32 threaded through and inserted into the insertion column 27. After the machine has been started up, the beginning of a strapping device is pushed through the strapping device feed 28 via one of the strapping device guideways 25 between the storage filling conveyor rollers 21. The storage filling conveyor rollers 21 then transfer the strapping means 13 to the strapping means retraction rollers 22, which feed the strapping means 13 through the tensioning device 24 and the strapping means insertion rollers 23 to the closing unit 14 in the appropriate direction of rotation.
  • the accumulation pressure generated by the storage filling conveyor rollers 21 fills the storage 20 at least with the length of strapping necessary for the subsequent strapping process.
  • the dynamic pressure is created by holding the beginning of the strapping agent in the closure assembly 14 while simultaneously conveying the storage filling conveyor rollers 21.
  • the strapping agent insertion rollers 23 then convey the beginning of the strapping agent at high speed through the strapping agent channel 12, the front end of the strapping agent being clamped in the area of the closing unit.
  • the strapping means 13 is then tightened around the package by means of the strapping means retraction rollers 22, the overlapping strapping means sections are connected to one another by the closure unit 14 and finally the strapping means is severed. A new strapping cycle can then begin.
  • the damaged strapping section is transported out of the machine 10. This is done in that the strapping roll 15 or 16, from which strapping 13 is currently being pulled, is driven with the aid of the drive 18 (rewinder) against the operational direction of rotation. So that the drive 18 can alternatively drive both strapping 15, 16 against the actual direction of rotation, it is mounted on the swivel arm 19, which can be moved by electromagnets 36 arranged on both sides, so that the drive 18 either rests on the strapping 15 or 16 or one can take neutral middle position.
  • the method and the device also act accordingly when the strapping agent supply runs out.
  • the upper one in the drawings empties Strapping means roll 15 (whose band is currently being processed), the reflection behavior with respect to the relevant photocell 33 changes as soon as its beam passes from the band to the winding core 35.
  • This "end of strap message” leads to the withdrawal of the strapping means 13 from the machine 10.
  • the strapping means indicator 31 in question reports its strapping means guide 25 as empty, the strapping means feed 28 reverses to the second strapping means 13 and promotes this in the strapping process . Consequently, almost no machine downtime occurs when the strapping means 13 of a stock of strapping means is used up.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Basic Packing Technique (AREA)
  • Packaging Of Special Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Saccharide Compounds (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Closing Of Containers (AREA)
  • Package Frames And Binding Bands (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Stopping Of Electric Motors (AREA)
EP92114704A 1991-11-26 1992-08-28 Verfahren und Vorrichtung zur Vermeidung von umreifungsmittelbedingten Betriebsunterbrechungen an Maschinen zum Umreifen von Packstücken Expired - Lifetime EP0544066B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138800 1991-11-26
DE4138800A DE4138800A1 (de) 1991-11-26 1991-11-26 Verfahren und vorrichtung zur vermeidung von umreifungsmittelbedingten betriebsunterbrechungen an maschinen zum umreifen von packstuecken

Publications (2)

Publication Number Publication Date
EP0544066A1 EP0544066A1 (de) 1993-06-02
EP0544066B1 true EP0544066B1 (de) 1995-08-02

Family

ID=6445584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92114704A Expired - Lifetime EP0544066B1 (de) 1991-11-26 1992-08-28 Verfahren und Vorrichtung zur Vermeidung von umreifungsmittelbedingten Betriebsunterbrechungen an Maschinen zum Umreifen von Packstücken

Country Status (16)

Country Link
US (1) US5299407A (da)
EP (1) EP0544066B1 (da)
JP (1) JPH05262307A (da)
KR (1) KR100216938B1 (da)
CN (1) CN1027245C (da)
AT (1) ATE125765T1 (da)
AU (1) AU654380B2 (da)
CA (1) CA2077298A1 (da)
DE (2) DE4138800A1 (da)
DK (1) DK0544066T3 (da)
ES (1) ES2077313T3 (da)
FI (1) FI923876A (da)
NO (1) NO923383L (da)
NZ (1) NZ244206A (da)
TW (1) TW252958B (da)
ZA (1) ZA926620B (da)

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Also Published As

Publication number Publication date
AU654380B2 (en) 1994-11-03
ZA926620B (en) 1993-03-26
JPH05262307A (ja) 1993-10-12
CN1027245C (zh) 1995-01-04
ES2077313T3 (es) 1995-11-16
FI923876A0 (fi) 1992-08-28
DE59203101D1 (de) 1995-09-07
AU2206192A (en) 1993-05-27
TW252958B (da) 1995-08-01
KR930009865A (ko) 1993-06-21
DE4138800A1 (de) 1993-05-27
FI923876A (fi) 1993-05-27
KR100216938B1 (ko) 1999-09-01
NZ244206A (en) 1995-07-26
CN1072640A (zh) 1993-06-02
NO923383D0 (no) 1992-08-28
US5299407A (en) 1994-04-05
DK0544066T3 (da) 1996-01-08
ATE125765T1 (de) 1995-08-15
CA2077298A1 (en) 1993-05-27
EP0544066A1 (de) 1993-06-02
NO923383L (no) 1993-05-27

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