EP0372212A1 - Dispositif de cerclage - Google Patents

Dispositif de cerclage Download PDF

Info

Publication number
EP0372212A1
EP0372212A1 EP89119901A EP89119901A EP0372212A1 EP 0372212 A1 EP0372212 A1 EP 0372212A1 EP 89119901 A EP89119901 A EP 89119901A EP 89119901 A EP89119901 A EP 89119901A EP 0372212 A1 EP0372212 A1 EP 0372212A1
Authority
EP
European Patent Office
Prior art keywords
strapping
punching tool
punching
movement
pair
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.)
Granted
Application number
EP89119901A
Other languages
German (de)
English (en)
Other versions
EP0372212B1 (fr
Inventor
Jürgen Dipl.-Ing. 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.)
Titan Umreifungstechnik GmbH and Co KG
Original Assignee
Fried Krupp AG Hoesch Krupp
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 Fried Krupp AG Hoesch Krupp, Hoesch AG filed Critical Fried Krupp AG Hoesch Krupp
Priority to AT89119901T priority Critical patent/ATE95773T1/de
Publication of EP0372212A1 publication Critical patent/EP0372212A1/fr
Application granted granted Critical
Publication of EP0372212B1 publication Critical patent/EP0372212B1/fr
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
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/30—Securing ends of binding material by deforming the overlapping ends of the strip or band
    • B65B13/305—Hand tools

Definitions

  • the invention relates to a strap strapping device with a tensioning device having a tensioning wheel for tensioning a steel strip which can be pulled off a supply roll and placed around a package, with a fixed lower punching tool and a punching movement carrying upper punching tool for connecting the overlapping ends of the strapping steel strap with at least two pairs of angular incisions lying in the longitudinal direction of the strapping band, the upper punching tool carrying out the punching movement being mounted and being drivable in such a way that, during its intended punching movement, the cutting in of one pair of cuts begins sooner than the cutting of the other one cut pair.
  • the strapping strap is to be placed around the package and then the strap strapping device is pushed onto the overlapping strap ends.
  • the band strapping device has a laterally open receptacle, so that the overlapping band ends are arranged between a base plate which has the lower punching tool and the upper punching tool which carries out the punching movement.
  • the tensioning wheel of the tensioning device is also arranged above the overlapping strap ends of the strapping strap, so that the strapping strap can first be tensioned around the package. After the strapping has been tensioned, the closure device is actuated to connect the overlapping ends of the strapping steel strap.
  • the tensioning device is then released and the overlapping strap ends move somewhat against one another, so that the protruding corners of the top strap end and the bottom strap end formed by the angular recess reach behind and hook.
  • the upper punching tool performing the punching movement is arranged on a pivot lever in the known strap strapping device, the pivot axis of the pivot lever extending transversely to the strap direction and is arranged at least approximately in the active plane of the tool parts, specifically on the side of the punching tools facing away from the clamping device. It is thereby achieved that, when introducing the pair of angular cuts, the cutting of the pair of angular cuts which is closest to the pivot axis of the pivotable upper punching tool is started. After a partial incision of the first pair of incisions, the incision of the second pair of incisions is started.
  • the incision of the third incision pair is started. Until the end of the pivoting movement of the pivotably mounted upper punching tool, however, all pairs of cuts are cut further, so that a relatively large force is also required for this.
  • a notch knife attached to the pivotably mounted upper punch there is also the fact that shortly before the end of the pivoting movement of the pivotably mounted upper punching unit witnesses a notch knife attached to the pivotably mounted upper punch. The notch knife must press into the upper end of the band, since the end of the band underneath is supported by the base plate of the strapping device which engages under the overlapping ends of the band. For this notching, an additional large force is required shortly before the punching movement ends.
  • the upper punch In order to be able to apply these large forces, the upper punch must be operated with a relatively long operating lever. Furthermore, the strapping device and in particular the base plate engaging under the strapping must also be made relatively strong in order to withstand the forces that occur.
  • this precisely defined limitation of the punching movement of the upper punching tool requires precise dimensioning and arrangement of the notch knife so that the upper band end is cut off during the limited punching stroke.
  • the invention has for its object to further improve a strapping device of the type described in the opening paragraph, and in particular to keep the total force to be exerted on the upper punching tool performing the punching motion small.
  • This object is achieved in that the upper punch when cutting the pairs of cuts with its working surface facing the lower punch, combined with a feed movement of the upper punch to the lower punch, executes a substantially rolling movement to the working surface of the lower punch, so that the cutting movement ends earlier than the cut pair started first incised pair of cuts. It is thereby achieved in a simple manner that not only does the incision start on the incision pairs take place successively, but also the incision process on the incision pair that started first is ended earlier than on the incision pair that started subsequently. The forces of different magnitude required during the cutting process of each pair of cuts are thus distributed more evenly over the entire cutting process in a simple manner, force peaks being avoided.
  • the working surface of the upper punching tool facing the lower punching tool can be designed to be curved in adaptation to its rolling motion. It is thereby achieved in a simple manner that, despite the rolling punch movement of the upper punch, the bulges of the central web and the side webs are the same on each pair of cuts large and the incision lengths are the same length on each incision pair.
  • the upper punch can have an opening at its end facing away from the work surface for the positive reception of an eccentric that can be driven with a shaft and can be guided at its end that has the work surface with a lateral attachment in a groove that runs perpendicular to the work surface of the lower punch tool, the pivot axis formed by the lateral extension is arranged approximately in the plane of the working surface of the upper punch.
  • the upper punching tool guiding the punching movement is thus designed in a simple manner in the manner of a thrust arm and can thus carry out the desired infeed movement and the rolling movement in a simple manner.
  • the upper punching tool receives an eccentric of the drivable shaft with a breakthrough, not only does the upper punching tool move towards the lower punching tool with a positive fit, but also the upper punching tool is returned to the basic position, in which the upper punching tool is at a distance from the lower one Punching tool is arranged so that the overlapping tape ends can be inserted between the punching tools and removed from the punching tools again after the pairs of angular cuts have been punched in.
  • the end of the upper punch that has the work surface is guided with a lateral shoulder in a groove in the housing that runs perpendicular to the work surface of the lower punch.
  • the pivot axis formed by the lateral attachment of the upper punch is approximately in the plane of the working surface of the upper punch arranged so that when the working surface of the upper punching tool engages as intended in the surface of the overlapping tape ends, there is no displacement in the longitudinal direction of the tape.
  • the shaft having the drive eccentric for the upper punch can be arranged perpendicularly over the longitudinal center of the lower punch and the groove leading the lateral attachment of the upper punch can also run perpendicularly in the longitudinal center of the lower punch.
  • the upper punching tool which acts as a thrust arm, is arranged in a simple manner centered on the longitudinal center of the closure consisting of several pairs of cuts.
  • the swiveling movement of the eccentric provided on the drive shaft for the intended punching operation of the upper punching tool can be limited to partial areas on both sides of the bottom dead center position.
  • the drive shaft having the eccentric does not have to be rotated through 360 degrees, which cannot be achieved with an actuating lever attached to the shaft anyway.
  • the eccentric with the drive shaft is only to be moved in the area of its bottom dead center position, namely on both sides of the bottom dead center position. In the immediate vicinity of the lower dead center position, the rolling movement takes place in particular, while the required infeed movement or pull-off movement of the upper punching tool to the lower punching tool is also effected with an increasing distance from the bottom dead center position.
  • the punching tools can first be effective on the pair of incisions to be incised, which is furthest from the clamping device in the circumferential direction, and lastly on the incision pair to be incised, which is the least distant from the clamping device in the circumferential direction.
  • the tensioning device exerts a force on the base plate, in particular in its tensioned position, since the tensioning wheel presses from above onto the overlapping belt ends supported on the underside by the base plate.
  • the force exerted on the base plate depends on the belt tension.
  • the stress caused by the punching process on the base plate occurs at a great distance from the load generated by the tensioning wheel, so that these loads can be easily absorbed by the base plate.
  • the load on the base plate caused by the cutting process moves ever closer to the stressed point, the load of which is caused by the tensioning wheel.
  • the band tension prevailing in the strapping band is already somewhat absorbed by the incisions and the punching tools protruding into the incisions, so that the tensioning device no longer has to absorb the entire band tension.
  • the load caused by the clamping device on the base plate becomes smaller, so that even when the pair of incisions, which are adjacent to the clamping device, is introduced, no very large total load is exerted on the base plate.
  • the lateral attachment of the upper punching tool can have a round cross-sectional area and engage in a bore of a sliding block guided in the groove.
  • the sliding block receiving the cylindrical lateral attachment of the upper punching tool can have at least one lifting lug, which straddles the strapping strap ends arranged between the two punching tools in the edge area, at its end facing the lower punching tool.
  • this lifting attachment provided on the sliding block, the overlapping band ends can be pulled out of the lower punching tool after the upper punching tool has been arranged at a distance from the lower punching tool when the upper punching tool is returned to the basic position.
  • the shaft having the drive eccentric for the upper punching tool can be pivoted with a hand lever. By simply actuating the drive shaft with the hand lever, the upper punching tool can thus be transferred from the basic position to the punching position and from the punching position back to the basic position.
  • the working surface of the upper punch which interacts with the lower punch, can be somewhat extended in the strapping direction towards the tensioning device and have a notch knife known per se for severing the tensioned strapping leading to a supply roll. With the punching movement of the upper punching tool, the excess strapping that leads to the supply roll can thus be separated from the strapping in a simple manner.
  • the notch knife is arranged in such a way that the actual notching is effected by the rolling movement of the working surface of the upper punching tool on the working surface of the lower punching tool after the last pair of cuts has also been made completely.
  • the strapping device shown in the drawing consists of a housing 10 with a handle 15 and with a base plate 11. Between the housing 10 and the base plate 11 there is a laterally open receiving slot 12 for the overlapping strap ends of a strapping strap.
  • the strapping band is to be placed around a package (not shown in more detail) and then the band strapping device with the receiving slot 12 is pushed onto the overlapping band ends 13.
  • a tensioning device 14 pivotably mounted on the housing 10 with the lever 17 by pivoting against the tensioning direction to be lifted so that the tensioning wheel 16 of the tensioning device comes free from the base plate 11 and enables the overlapping strap ends 13 of the strapping strap to be inserted into the receiving slot 12.
  • the lever 17 of the tensioning device 14 is to be released so that the tensioning device 14 assumes its operative position under the action of a force accumulator (not shown), in which the tensioning wheel 16 of the tensioning device 14 is non-positively against the top of the overlapping tape ends 13 creates.
  • a force accumulator not shown
  • the tensioning wheel 16 of the tensioning device 14 is non-positively against the top of the overlapping tape ends 13 creates.
  • three known pairs of angular incisions are introduced into the overlapping ends 13 of the strapping as a closure.
  • the pairs of angular incisions not shown are arranged one behind the other in the longitudinal direction of the strapping.
  • the central webs 18 between the pairs of incisions are simultaneously arched upwards out of the band plane while the incisions are being cut, while the side webs 19 formed by the incisions are arched downwards out of the band plane.
  • the projecting corners of one band end formed by the angular incisions can engage behind and catch the projecting corners formed by the angular incisions of the other band end.
  • the angle cuts are made with a bottom Ren punch 20 and an upper punch 21.
  • the lower punch 20 is fixed to the base plate 11, while the upper punch 21 is arranged in the housing 10 and executes the punching movement.
  • the upper punching tool has an opening 23 for the positive reception of an eccentric 25 which can be driven by a shaft 24.
  • the shaft 24 driving the eccentric 25 can be rotated with an actuating lever 26.
  • the upper punch 21 is guided with a lateral extension 27 in a groove 28 which runs perpendicular to the working surface 29 of the lower punch 20, the pivot axis 30 formed by the lateral extension 27 approximately in the plane of the working surface 22 of the upper punch 21 is arranged.
  • the shaft 24 having the drive eccentric 25 for the upper punch 21 is arranged vertically above the longitudinal center of the lower punch 20.
  • the groove 28 leading the lateral shoulder 27 of the upper punch 21 extends perpendicularly in the longitudinal center of the lower punch 20.
  • the swiveling movement of the eccentric 25 provided on the drive shaft 24 for the intended punching operation of the upper punch 21 is on partial areas on both sides of the bottom dead center position limited.
  • the punching tools 20, 21 are first effective on the pair of incisions to be cut, which is furthest from the tensioning device 14 in the strapping direction. Then the middle pair of cuts is cut and finally the pair of cuts which is least of the strapping direction Clamping device 14 is removed.
  • the upper punch 21 executes a movement in the manner of a thrust arm.
  • Various positions of the upper punch 21 that occur during the punching process are shown in FIGS. 2 to 8. 2, the upper punch 21 is shown in the basic position.
  • the working surface 22 of the upper punch 21 is arranged at such a distance from the working surface 29 of the lower punch 20 that the overlapping strap ends can be inserted between the punching dies 20 and 21 and after the strapping process the strapping device can be removed from the strapping.
  • the actuating lever 26 which is not shown in FIGS.
  • the shaft 24 and thus also the eccentric 25 is rotated, as a result of which the upper punching tool 21 performs a displacement movement, but with the lateral extension 27 in the groove 28 of the housing 10 is guided.
  • the side extension 27 is shown as a cylindrical pin, the longitudinal center line of the cylindrical pin 27 forming the pivot axis 30 for the upper punch 21 when it is moving.
  • the cylindrical lateral extension 27 of the upper punch 21 can also engage in a bore 31 of a sliding block 32 guided in the groove 28. A reliable, low-wear guidance in the groove 28 is thereby achieved.
  • Fig. 3 the upper punch 21 is shown in the position in which its working surface 22 ge against the top of the overlapping tape ends 13 to the plant come, with the overlapping tape ends 13 resting on the working surface 29 of the lower punch 20. This is the position immediately before the actual punching process begins. It can be seen, however, that the first step is to cut the pair of incisions which are furthest away from the clamping device.
  • FIG. 5 shows the upper punching tool 21 in the position in which the cutting of the third pair of cuts, which is the least distant from the clamping device 14, is started.
  • the first pair of incisions has already been made completely.
  • the second pair of incisions is also almost completely inserted.
  • FIG. 6 shows the upper punching tool in the position in which the third pair of incisions is only partially cut.
  • the incision of the first and the second pair of incisions is, however, completely finished.
  • 7 shows the upper punching tool 21 in the position in which the third pair of cuts has been made completely in the overlapping band ends.
  • the cutting process on the first, second and third pair of cuts is thus started in a simple manner one after the other and the cutting processes are also carried out one after the other completed. As a result, high loads are avoided in a simple manner.
  • the working surface 22 of the upper punch 21 has carried out an essentially rolling movement on the working surface 29 of the lower punch 20.
  • the working surface 22 of the upper punching tool 21 facing the lower punching tool 20 is designed to be arcuate in adaptation to its rolling movement.
  • the working surface 22 of the upper punching tool 21 cooperating with the lower punching tool 20 is somewhat extended in the circumferential direction towards the tensioning device 14 and has a notch knife 36 known per se for severing the excess strapping band leading to the supply roll.
  • the upper punch 21 thus also has a notch knife 36 in a simple manner, in order to simultaneously cut off the excess strapping from the strapping during the punching movement.
  • the notching process can be carried out in time after the pairs of cuts have been completely inserted.
  • the notching process is thus separated before the punching of the incision pairs, so that the incision pairs can be made with the same incision length and depth regardless of the notching, which has a positive effect on the closure strength.
  • the sliding block 32 receiving the cylindrical side extension 27 of the upper punch 21 can have at its end directed towards the lower punch 20 two strapping ends 13 arranged between the two punching tools 20, 21 in the edge region and under the lifting portions 35. It is thereby achieved in a simple manner that when the actuating lever 26 is returned, the upper punch 21 is inevitably returned to the basic position and the overlapping band ends 13 are inevitably lifted off the lower punch 20 during this return.
  • the embodiment shown is merely an example of realizing the invention and it is not restricted thereto. Rather, various other designs and modifications are possible.
  • the upper punching tool shown in one piece could also be formed in two parts, the actual punching tool consisting of a flat plate and being fastened to a carrier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Package Frames And Binding Bands (AREA)
EP89119901A 1988-12-09 1989-10-26 Dispositif de cerclage Expired - Lifetime EP0372212B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89119901T ATE95773T1 (de) 1988-12-09 1989-10-26 Bandumreifungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841489 1988-12-09
DE3841489A DE3841489A1 (de) 1988-12-09 1988-12-09 Bandumreifungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0372212A1 true EP0372212A1 (fr) 1990-06-13
EP0372212B1 EP0372212B1 (fr) 1993-10-13

Family

ID=6368793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119901A Expired - Lifetime EP0372212B1 (fr) 1988-12-09 1989-10-26 Dispositif de cerclage

Country Status (7)

Country Link
US (1) US5029433A (fr)
EP (1) EP0372212B1 (fr)
AT (1) ATE95773T1 (fr)
DE (2) DE3841489A1 (fr)
ES (1) ES2015504T3 (fr)
RU (1) RU1776242C (fr)
UA (1) UA18247A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038747A1 (fr) 1999-11-23 2001-05-31 August Friedberg Gmbh Ecrou dote d'une rondelle

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139283A1 (de) * 1991-11-29 1993-06-03 Roeder & Spengler Stanz Stanzmesser und vorrichtung zum stanzen
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
US5526852A (en) * 1994-06-13 1996-06-18 Rakovski; Zvonko Punching and stamping tool
US5694984A (en) * 1996-11-06 1997-12-09 Illinois Tool Works Inc. Strapping tool with improved punches
US6260337B1 (en) * 1999-10-27 2001-07-17 Illinois Tool Works Inc. Hand strapping tool
US6487833B1 (en) * 2000-01-29 2002-12-03 Howard W. Jaenson Strap welding system and method
US6412257B1 (en) * 2000-08-28 2002-07-02 Tekpak Corporation Portable and manual binding device
EP1260439B1 (fr) 2001-05-21 2004-11-17 Orgapack GmbH Dispositif de cerclage comportant des pièces d'usure échangeables
NZ519012A (en) 2001-05-21 2003-10-31 Orgapack Gmbh Manually actuated strapping unit for wrapping a steel strap around a packaged item
NZ519013A (en) * 2001-05-21 2003-05-30 Orgapack Gmbh Manually actuated strapping unit for wrapping a steel strap around a packaged item
EP1364877B1 (fr) * 2002-05-24 2007-06-13 Orgapack GmbH Outil de poinçonnage pour un dispositif de cerclage
US20050166990A1 (en) * 2004-01-29 2005-08-04 Matthew Stillings Banding apparatus providing reduced banding material buckling
US7331165B1 (en) * 2006-11-01 2008-02-19 Hsiu-Man Yu Chen Packing machine with an adjustable band-compressing stroke
TWM355901U (en) * 2008-11-28 2009-05-01 Yang Bey Ind Co Ltd Pressing belt of packing device
US9221567B2 (en) * 2012-01-25 2015-12-29 Southern Bracing Systems Enterprises, Llc Systems, methods, and devices for tensioning straps

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2050097A5 (fr) * 1969-06-09 1971-03-26 Signode Corp
GB2082977A (en) * 1980-08-08 1982-03-17 Fromm Ag Hoop-forming apparatus for steel straps
GB2118265A (en) * 1982-04-10 1983-10-26 Hoesch Werke Ag Apparatus for tightening and fastening a securing band

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549626A (en) * 1944-02-15 1951-04-17 Mosey Frederick William Strapping machine
US3241579A (en) * 1962-06-29 1966-03-22 Universal Steel Strapping Inc Splicing machine
DE1906457U (de) * 1963-08-14 1964-12-10 Seal Less Strapping Ltd Of Ger Geraet zum verschnueren von paketen.
US3442734A (en) * 1965-08-13 1969-05-06 Signode Corp Combination strap tensioning and sealing tool
US3728779A (en) * 1970-11-23 1973-04-24 Behlen Mfg Co Method of joining strip material
DE2133714C3 (de) * 1971-07-07 1974-04-11 Titan Verpackungssysteme Gmbh, 5830 Schwelm Umreifungseinheit zum Umreifen von expansiven Gütern
CH603313A5 (fr) * 1976-12-03 1978-08-15 Borbe Wanner Ag
US4627142A (en) * 1984-06-06 1986-12-09 Westinghouse Electric Corp. Crimping

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2050097A5 (fr) * 1969-06-09 1971-03-26 Signode Corp
GB2082977A (en) * 1980-08-08 1982-03-17 Fromm Ag Hoop-forming apparatus for steel straps
GB2118265A (en) * 1982-04-10 1983-10-26 Hoesch Werke Ag Apparatus for tightening and fastening a securing band

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038747A1 (fr) 1999-11-23 2001-05-31 August Friedberg Gmbh Ecrou dote d'une rondelle

Also Published As

Publication number Publication date
UA18247A (uk) 1997-12-25
RU1776242C (ru) 1992-11-15
DE58905904D1 (de) 1993-11-18
US5029433A (en) 1991-07-09
ATE95773T1 (de) 1993-10-15
DE3841489C2 (fr) 1992-03-05
ES2015504T3 (es) 1994-01-16
ES2015504A4 (es) 1990-09-01
DE3841489A1 (de) 1990-06-13
EP0372212B1 (fr) 1993-10-13

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