US3396889A - Reversible feed wheel mechanism for power strapping machines - Google Patents

Reversible feed wheel mechanism for power strapping machines Download PDF

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Publication number
US3396889A
US3396889A US551975A US55197566A US3396889A US 3396889 A US3396889 A US 3396889A US 551975 A US551975 A US 551975A US 55197566 A US55197566 A US 55197566A US 3396889 A US3396889 A US 3396889A
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Prior art keywords
strapping
feed wheel
link
strap
feed
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Expired - Lifetime
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US551975A
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English (en)
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Jr James R Annis
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Signode Corp
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Signode Corp
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Priority to US551975A priority Critical patent/US3396889A/en
Priority to GB1955/67A priority patent/GB1160384A/en
Priority to DE19671586260 priority patent/DE1586260A1/de
Priority to FR96892A priority patent/FR1516381A/fr
Application granted granted Critical
Publication of US3396889A publication Critical patent/US3396889A/en
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    • 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
    • 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
    • B65B13/22—Means for controlling tension of binding means

Definitions

  • the improved reversible feed wheel mechanism comprising the present invention has been designed primarily for use in connection with stationary power strapping machines of the fully automatic type wherein plastic or steel strapping is fed or payed out in one direction through a chute which encircles the package or bundle undergoing strapping and then, after the strapping has been caused to completely encircle the package, its direction of feed is reversed to tension the strapping about the package.
  • the invention is however not limited to such use and feed wheel mechanisms embodying the principles of the invention may, if desired, with or without modification as required, be employed in connection with any power strapping machine, whether fully automatic or semiautomatic, where the requirements are that a feed wheel, at the commencement of the machine cycle, impel the strapping in one direction for strap-feeding purposes and then, at a subsequent point in the machine cycle, reverse its direction of rotation to tension the previously fed strapping. Irrespective however of the particular use to which the invention may be put, the essential features thereof remain substantially the same.
  • reaction forces on the feed wheel are such that a rapid self-deenergization of the feed wheel takes place as the approach angle becomes greater and, as a result of the consequent loss of pressure upon the strapping, there is a tendency for slippage of the feed wheel upon the strapping with consequent abrasion of the latter due to a milling action so that the interstices between the driving teeth or protuberances on the feed wheel become filled with particles.
  • resistance to strapping feed is encountered in advance of the feed wheel, as for example where the strapping is being forced forwardly through a strap chute, the tractional efficiency of the feed wheel is impaired.
  • the present invention is designed to overcome the above-noted limitations that are attendant upon the construction and operation of reversible feed wheel mechanisms which operate upon the strapping in one direction for strapping feed purposes and in the other direction for strap tensioning purposes and, toward this end, the invention contemplates the provision of a novel feed wheel mechanism in which a self-energizing action takes place in both directions of rotation of the feed wheel.
  • FIG. 1 is a sectional view taken substantially vertical- 1y, centrally and longitudinally through a reversible feed wheel mechanism embodying the principles of the present invention the mechanism embodying a novel feed wheel anvil and gripper member and being shown as operatively associated with the related parts of a power strapping machine;
  • FIG. 2 is a sectional view taken substantially on the line 2-2 of FIG. 1 in the direction of the arrows;
  • FIG. 3 is a sectional view taken substantially on the line 3-3 of FIG. 1 in the direction of the arrows;
  • FIG. 4 is a side elevational view, partly in section and entirely schematic in its representation, illustrating the mode of operation of the structure shown in FIG. 1;
  • FIG. 5 is a schematic view, similar to FIG. 4 illustrating the structure and mode of operation of a modified form of reversible feed wheel mechanism embodying the present invention
  • FIG. 6 is a schematic view similar to FIGS. 4 and 5 showing another modified form of feed wheel mechanism embodying the present invention.
  • FIG. 7 is a schematic view similar to FIGS. 4, 5 and 6, showing the anvil member of FIG. 4 devoid of its gripper function.
  • one form of reversible feed wheel mechanism incorporating the principles of the present invention has been designated in its entirety at 10 and it is shown for exemplary purposes as being embodied in a fully automatic power strapping machine of the type which operates to feed a length of strapping material in one direction about a bundle so that its free end is positioned in overlapping relationship with respect to the standing portion thereof which leads to a source of strapping such as a coil of strapping, after which the free end of the strapping is fixedly clamped and the direction of movement of the strapping is reversed to tension the strapping and shrink the same on the bundle.
  • a source of strapping such as a coil of strapping
  • the machine When the required degree of tension has been attained, the machine operates to position and crimp'a seal about the overlapping portion of the strapping or otherwise unite these overlapping portions and, finally. it operates to sever the standing portion of the strapping to free the strapped bundle.
  • the feed wheel mechanism is, with suitable modification as required, applicable to a wide variety of automatic power strapping machines but for exemplary, purposes it has been shown as being incorporated in a strapping machine of the general type, shown and described in United States patent to Crosby et al., No. 2,915,003,
  • Strapping S is drawn from a suitable strapping dispenser (not shownland is fed by the mechanism 10 through the housing 12 forwardly into the receivingend 22 of the chute 20, from whence it is projected in a closed path substantially completely around the article A so that it emerges from the discharge end 24 of the chute and then traverses a short distance beneath the housing 12 through a guide channel 26 until the leading end region 28 thereof overlaps and underlies the standing portion 30 of the strapping which exists at a sealing station SS.
  • a suitable strapping dispenser not shownland is fed by the mechanism 10 through the housing 12 forwardly into the receivingend 22 of the chute 20, from whence it is projected in a closed path substantially completely around the article A so that it emerges from the discharge end 24 of the chute and then traverses a short distance beneath the housing 12 through a guide channel 26 until the leading end region 28 thereof overlaps and underlies the standing portion 30 of the strapping which exists at a sealing station SS.
  • the mechanism 10 becomes effective to clamp the free end region of the strapping and reverse the direction of movement of the standing portion of the strapping through the housing 12 whereupon the article-encircling portion of the strapping S will be drawn in centripetal fashion from the chute 20 to shrink the same about the article, after which continued reverse movement of the strapping will tension the thus shrunk strapping.
  • a previously applied seal 32 is crimped in position about the overlapping portions .of the strapping at the sealing station SS and the free end region of the strapping is severed from the encircling loop to release the entrapped article from the source of strapping, suitable crimping jaw instrumentalities 34 and shearing instrumentalities 36 being provided at the sealing station for this purpose.
  • this mechanism involvesin its general organization a toothed or serrated feed wheel proper which is carried at the lower end of a bifurcated link 52, the upper end of which is pivoted to a cross pin 54 which extends across the housing 12 between the two walls 14 and 16.
  • the feed wheel 50 is secured to the drive shaft 55 of a reversible motor M and is straddled by the furcations of the link 52 as best seen in FIG. 2.
  • the motor M is provided with a housing 56 having a hub portion 57 secured in an opening 58 formed in one of the furcations of the link 52, the hub portion passing through a clearance opening 60 formed in the side wall 16 of the housing12.
  • the motor is thus supported by the link 52 near the distal or lower end thereof so that it moves bodily with the link throughout the limited swinging movements of the latter about the axis of the pivot pin 54.
  • the feed wheel 50 cooperates with a combined gripper and anvil member 62 in the form of a rocker element to feed the strapping S which is interposed between these two elements either in a forward direction to project the strapping into and through the chute 20 for article encircling purposes, or in a. reverse or rearward direction to shrink the strapping loop and tension the same about the article as previously described.
  • This rocker element 62 is generally in the form of a pentahedron which is substantially of triangular configuration in longitudinal elevation as shown in FIG. 1. Stated otherwise the rocker element 62 is wedge-shape in its design.
  • the element 62 is possesssed of three functional sides including a base side 64, a.
  • the rocker element 62 is pivoted for limited swinging movement about a horizontal axis by means of a pin 70 which projects between the side wallsj14 and 16 and serves to pivotally support the rocker element in the vicinity of the juncture between the sides 64 and 66 for free swinging movement in either direction.
  • the working side 68 of the rocker element 62 is formed with a shallow 'semicylindrical depression or well 72 therein having a radius of curvature which is preferably slightly greater than the radius of the feed wheel 50 and into which depression the periphery of the feed Wheel projects.
  • the feed wheel is centered within the depressi0n'72 as shown in FIG. 1, i.e., when the axis of the link 52 is such that it intersects the transverse axisof the pivot pin 70, the periphery of the feed Wheel lies close to the bottom of the depression 72 but is separated therefrom by'a distance slightly less than the thickness of the strapping S. Such a position has been illustrated in FIG.
  • the feed wheel effectively bears against the forward region 72a of the depression, either under the influence of gravitational forces acting on the motor M, or a self-energizing action in one direction as will be described presently, or both.
  • the feed Wheel effectively bears against the rear regions 72b of the depression due to a similar self-energizing action in the opposite direction.
  • the strapping is initially passed through the housing by projecting the free end thereof forwardly through an opening provided in the rear Wall 12 and across the upper surface of the side 68 and from thence into the receiving end 22 of the chute 20, the strapping being guided by the feed wheel 50 which at the time is caused to rotate in a clockwise direction, so that it follows the contour of the depression 72.
  • the strapping after being initially thus introduced through the housing, remains in the housing until the supply of strapping leading from the dispenser is exhausted.
  • a pair of substantially identical guide blocks 82 are nested within channel-like depressions. 84 (FIG.
  • the width of the blocks 82 is substantially equal to the width of the strapping S and the width of the feed wheel 50 is less than the width of the strapping.
  • a pair of spaced apart flanges 90 on each of the guide blocks 82 straddle the peripheral region of the feed wheel but lie within the marginal confines of the strapping so that these latter flanges act as stripper elements to constrain the strapping to follow the contour of the upper working surface 68 of the rocker element 62 rather than cling to the feed wheel and thus cause jamming of the mechanism.
  • crimping jaw instrumentalities 34 and shearing instrumentalities 36 at the sealing station SS my be of any conventional construction but, for examplary purposes herein they are illustrated as being of the type shown and described in United States patent to Meier, No. 3,150,694, granted on Sept. 29, 1964, and entitled Strapping Tool.
  • the crimping jaw instru-mentalities include a pair of cooperating crimping jaws 92 which operate at an appropriate point in the machine cycle to loosely maintain a seal such as the seal 32 around the overlapping portions 28 and 30 of the strapping S and hold the same thus loosely positioned during the strap tensioning operation and then, after such tensioning operation has been completed, to crimp the seal.
  • the shearing instr-umentalities 36 include a depressible plunger 94 which, upon depression thereof, engages the seal 32 and forces the same downwardly so as to shear the standing portion of the strapping against a fixed shear block 96.
  • This guide channel 26 is established by means of a swinging gate member 100 which is pivoted by a pin 102 to one side of the rocker element 62 and has a foot portion 104 which normally underlies the latter element.
  • the gate member 100 is biased to its normal position by a torsion spring 106 surrounding the pivot pin 102.
  • this gate member 100 is deflected by the inward centripetal movement of the strapping so that the gate member offers no resistance to removal of the strapped article from the strapping zone.
  • An anvil foot 110 also normally underlies the forward end region of the rocker element 62 'and constitutes a part of a second swinging gate member 112 of C-shape design.
  • the gate member 112 is pivoted by a pin 114 (FIG. 2) to an overhead support 115 constituting a part of the machine framework and which is disposed well above the level of the link 52.
  • the anvil foot 110 may be formed with serrations on its upper side thus establishing a movable gripper jaw 116 which is designed for cooperation with similar serrations which establish a fixed gripper jaw 118 on the underneath side of the extreme forward region of the rocker element 62 in clamping the strapping therebetween immediately prior to the strap tensioning operation.
  • the gate member 112 is capable of being laterally displaced as shown in dotted lines in FIG. 2 after the strap severing operation so as to release the tensioned loop of strapping which surrounds the article and thus release the article so that it may be withdrawn from the strapping zone.
  • FIG. 4 The operation of the feed wheel mechanism may readily be described by reference to the schematic illustration of FIG. 4 wherein the principal components thereof have been, to a large extent isolated from the immediate strapping machine environment and wherein the guide' blocks 82 have been removed in the interests of clarity.
  • Reference to FIG. 4 will reveal the fact that during that portion of the machine cycle when the strapping S is undergoing feeding in a forward direction, i.e., to the left as seen in this view, the feed wheel will rotate in a clockwise direction to thus impel the strapping which overlies the depression 72.
  • the magnitude of the self-energizing action is a function of the cotangent of the angle involved between the axis of the link 52 and a plane which is tangent to the increment of linear contact between the feed wheel 50 and surface portion 72b at any given instant during the strap feeding operation.
  • the present feed wheel mechanism 10 is effective to establish a self-energizing operation of the feed wheel against the strapping S during impelling of the latter in either direction.
  • the energizing angles involved during rotation of the feed wheel in either direction may be regulated to accommodate the desired degree of pressure upon the strapping by proper selection of the pivotal axis of the pin to vary the normal clearances between the rocker element 62 and the two abutment surfaces which limit the swinging movements of this element.
  • the energizing angle involved need not be steep since the frictional resistance offered to the strapping passing through the chute is not great, even when a full complement of strapping is disposed within the chute near the end of the strap feeding portion of the machine cycle.
  • relatively light pressure upon the strapping by the feed wheel will suffice to impel the strap forwardly.
  • FIG. a modified form of reversible feed wheel mechanism has been illustrated schematically and designated in its entirety at 210.
  • the same general principle of dual-energization of the feed wheel 250 and its supporting links 252a and 252b obtains as in the case of the feed wheel 50 and its single supporting link 52. Due to the similarity of parts involved, and in order to avoid needless repetition of description, similar characters of reference but of a higher order have been applied to the corresponding parts as between the disclosures of FIGS. 4 and 5.
  • the motor shaft 256 which supports the feed wheel 250 is suspended from the lower ends of the two supporting links 252a and 252b.
  • These links are of equal length and they in turn, are loosely and pivotally supported adjacent their upper ends on fixed pins 254 which are spaced from each other and lie in the same horizontal plane.
  • the spacing of the pins 254 and the length of the links 252a and 25212 are such that the links are disposed substantially at a right angle to each other with the inclination thereof being on the order of 45.
  • the pivotal support for the links 252a and 252b is established by means of longitudinally extending slots 253 through which the pins 254 extend.
  • the feed wheel 250 cooperates with a fixed back-up anvil block 310 against which it effectively bears to impel the strapping S either in a forward direction or in a reverse direction, depending upon the direction in which the feed wheel supporting motor shaft 256 is rotated.
  • the gravitational force .of the motor M2 as applied to the feed wheel through the shaft 256 may be relied upon to establish the necessary initial pressure be tween the feed wheel and the strapping S for strap-impelling purposes.
  • each of the links 252:: and 252b may be yieldingly biased in opposite directions respectively by springs 257 to attain this initial feed wheel pressure on the strapping. This spring biasing of the links 252a and 252b may be employed in an installation where the overlapping portions of the strapping extend vertically along a vertical side of the article undergoing strapping so that the gravitational force of the motor is not available for pressure application.
  • FIG. 6 a further modified form of reversible feed wheel mechanism has been schematically illustrated and designated at 410. Again, due to the similarity of the mechanism 410 with the mechanisms 10 and 210', and in order to avoid needless repetition of description, similar reference characters of a still higher order have been applied to the corresponding parts as between the structures of FIGS. 5 and 6.
  • the two links 252a and 252b have been replaced by a single generally triangular supporting plate 452 which, in effect, constitutes a supporting link for the feed wheel 450.
  • the feed wheel supporting motor shaft 456 is pivotally supported near the lower corner of the triangular plate 452 while the plate itself is fioatingly supported on pins 454 which project through arcuate slots 453 adjacent the two upper corners of the triangle.
  • the feed wheel 450 cooperates with a freely rotatable back-up wheel 510 for strap gripping purposes.
  • the effect is similar to that which would be attained if the two links 252a and 252b were to be fixedly secured to each other so as to constitute in effect a bell crank arrangement.
  • Self-energization of the feed wheel 450 against the back-up wheel 510 is attained regardless of the direction of rotation of the feed wheel inasmuch as the shortest distance between the axis of the feed wheel drive shaft 456 and the axis of either of the two pivot pins 454, as well as the radius of the feed wheel 450, are such that at no time may the feed wheel swing free of the backup wheel 510, regardless of the direction of tilting movement of the triangular supporting link or plate 452.
  • the plate' 452 may be biased by a single compression spring 457 similar in function to the springs 257 associated with the links 252a and 252b of FIG. 5.
  • the feed wheel mounting including the feed wheel 650, its supporting link 652, and the pivot pin 654 for the link remains substantially the same as the feed wheel mounting of the feed wheel mechanism 10 of FIG. 4.
  • the anvil member 610 is similar in its construction to the anvil member or rocker element 62 but, instead of being movable, it is fixed relative to the strapping machine framework and thus is devoid of any associated gripper means for the free end region .of the strapping S. Utilizing similar reference numerals of a still higher order to designate the corresponding parts as between the disclosures of FIGS.
  • the anvil member 610 is formed with a semi-cylindrical depression 672 having reaction surfaces 672a and 672b which cooperate with the strapping S and feed wheel 650 during strap feeding and strap tensioning operations respectively in precisely the same manner as described in connection with the feed wheel mechanism 10.
  • the various pivot pins 54, 254, 454 and 654 constitute fixed elements on the strapping machine framework and that the feed wheel reaction members, i.e., the rocker element 62, the anvil blocks 510, 610 and the back-up wheel 510 have fixed supports therefor on the framework, although the members may, if desired, be capable of displacement for strap clearance purposes after the strapping operation has been completed as is the case in connection with the anvil member or foot 210 of FIGS. 1 and 3.
  • these latter reaction elements are devoid of any gripper function, it being understood that separate gripper means for the strapping will be provided in the vicinity of the strapping station.
  • a reversible feed wheel mechanism for feeding a length of strapping in one direction for article-encircling purposes and in a reverse direction for strap-tensioning purposes, said mechanism comprising: a reaction member supported by the framework, a rotatable feed wheel designed for cooperation with said reaction member for tractionally feeding strapping thereacross in opposite direction, and a suspension linkage movably supporting said feed wheel on the framework and including a link portion which is effective under compression and through the strapping to cause progressive binding of the feed wheel against the reaction member under the influence of the locomotive action of the feed wheel on the strapping during rotation of the feed wheel in either direction, and means for selectively rotating the feed wheel in opposite directions.
  • a reversible feed wheel mechanism as set forth in claim 1, wherein the link portion which is effective under compression during rotation of the feed wheel in one direction, and the link portion which is effective under compression during rotation of the feed wheel in the other direction, are embodied in a single link the upper end of which is pivoted to the framework and the lower end of which rotatably supports the feed wheel.
  • a reversible feed wheel mechanism as set forth in claim 1, wherein said link portion of the suspension linkage has its proximate end pivoted to the framework, said feed wheel being pivotally mounted on the distal end of said link portion.
  • a reversible feed wheel mechanism as set forth in claim 1, wherein the link portion which is effective under compression and through the strapping during rotation of the feed wheel in one direction has its proximate end loosely pivoted to the framework, and wherein the link portion which is effective under compression and through the strapping during rotation of the feed wheel in the other direction likewise has its proximate end loosely pivoted to the framework, the regions of pivotal connection for said link portions being spaced from each other.
  • a reversible feed wheel mechanism as set forth in claim 4, wherein said link portions are embodied in a common rigid link member.
  • a reversible feed wheel mechanism for feeding a length of strapping in one direction for article-encircling .purposes and in a reverse direction for strap-tensioning purposes, said mechanism comprising: a feed wheel supporting link having its proximate end pivoted to the framework for swinging movement of the link in opposite directions, a strap-impelling feed wheel rotatably mounted on the distal end of said link, reaction means supported by the framework and between which means and the feed wheel the strapping passes during impelling thereof in either direction, said reaction means presenting a pair of reaction surfaces against which the feed wheel is adapted to effectively bear through the strapping and which are so disposed with respect to the arcuate path of swinging movement of the feed wheel that the locomotive action of the feed wheel on the strapping urges the feed wheel bodily toward one of said surfaces to increase the pressure of the feed wheel on the strapping when the feed wheel is rotated in one direction, and urges the feed wheel bodily toward the other surface to increase the pressure of the feed wheel on
  • reaction means comprises a reaction block having a shallow depression therein into which the peripheral region of the feed wheel projects, the opposite side surfaces of said depression establishing said pair of reaction surfaces.
  • a reversible feed wheel mechanism as set forth in claim 7, wherein said depression is of arcuate configuration and on a radius of curvature greater than the combined effective radial extent of the link and its supported feed wheel.
  • a reversible feed wheel mechanism as set forth in claim 7, wherein said reaction block is in the form of a rocker element pivoted to the framework for limited rocking movement in opposite directions and about an axis which is intersected by the longitudinal axis of the link when the feed wheel is in an intermediate position out of effective engagement with either reaction surface, and an abutment positioned in the path of rocking movement of the rocker element in each direction for limiting the extent of such rocking movement, one of said abutments, in combination with the adjacent opposing portion of the gripper element, constituting a gripper foot for the free end of the length of strapping.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US551975A 1966-05-23 1966-05-23 Reversible feed wheel mechanism for power strapping machines Expired - Lifetime US3396889A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US551975A US3396889A (en) 1966-05-23 1966-05-23 Reversible feed wheel mechanism for power strapping machines
GB1955/67A GB1160384A (en) 1966-05-23 1967-01-19 Reversible Feed Wheel Mechanism for Power Strapping Machines.
DE19671586260 DE1586260A1 (de) 1966-05-23 1967-02-10 Umkehrbarer Zufuehrradmechanismus fuer Bindemaschinen
FR96892A FR1516381A (fr) 1966-05-23 1967-02-28 Mécanisme perfectionné de roue d'avance réversible pour des machines de cerclage mécaniques

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US551975A US3396889A (en) 1966-05-23 1966-05-23 Reversible feed wheel mechanism for power strapping machines

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US3396889A true US3396889A (en) 1968-08-13

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US (1) US3396889A (de)
DE (1) DE1586260A1 (de)
FR (1) FR1516381A (de)
GB (1) GB1160384A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744342A1 (de) * 1995-05-26 1996-11-27 Orgapack Ag Spann- und Verschliessvorrichtung zum Umreifen eines Gegenstandes mit einem Band
US6035774A (en) * 1998-03-09 2000-03-14 Strapex Holding Ag Band tensioning device on a strapping machine
US20020139829A1 (en) * 2001-03-30 2002-10-03 Nelson Cheung Feed wheel for strapping tool

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3051121C2 (de) * 1979-10-10 1995-03-09 Signode Corp Greifvorrichtung zum Festlegen des Vorderendes eines Umreifungsbandes in einem Umschnürungsgerät
US4282907A (en) * 1979-10-10 1981-08-11 Signode Corporation Tension sensing mechanism for strapping tool
US5771449A (en) * 1994-03-17 1998-06-23 Endlink, Inc. Sectorized multi-function communication system
US6006069A (en) * 1994-11-28 1999-12-21 Bosch Telecom Gmbh Point-to-multipoint communications system
US6112056A (en) 1995-06-07 2000-08-29 Cisco Systems, Inc. Low power, short range point-to-multipoint communications system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118584A (en) * 1962-08-06 1964-01-21 United States Steel Corp Feed-tension mechanism for automatic strapping machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118584A (en) * 1962-08-06 1964-01-21 United States Steel Corp Feed-tension mechanism for automatic strapping machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744342A1 (de) * 1995-05-26 1996-11-27 Orgapack Ag Spann- und Verschliessvorrichtung zum Umreifen eines Gegenstandes mit einem Band
US5690023A (en) * 1995-05-26 1997-11-25 Orgapack Ag Tensioning and sealing apparatus for strapping an object with a band
US6035774A (en) * 1998-03-09 2000-03-14 Strapex Holding Ag Band tensioning device on a strapping machine
US20020139829A1 (en) * 2001-03-30 2002-10-03 Nelson Cheung Feed wheel for strapping tool
US6505766B2 (en) * 2001-03-30 2003-01-14 Illinois Tool Works Inc. Feed wheel for strapping tool

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DE1586260A1 (de) 1970-04-23
FR1516381A (fr) 1968-03-08
GB1160384A (en) 1969-08-06

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