US3589275A - Package-binding machine with improved gripping means - Google Patents

Package-binding machine with improved gripping means Download PDF

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Publication number
US3589275A
US3589275A US868370A US3589275DA US3589275A US 3589275 A US3589275 A US 3589275A US 868370 A US868370 A US 868370A US 3589275D A US3589275D A US 3589275DA US 3589275 A US3589275 A US 3589275A
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US
United States
Prior art keywords
package
binding
free end
opening
stop
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
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US868370A
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English (en)
Inventor
Pieter Arnolus Van De Bilt
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Metaverpa NV
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Metaverpa NV
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Publication date
Application filed by Metaverpa NV filed Critical Metaverpa NV
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
    • B65B13/06—Stationary ducts or channels

Definitions

  • a stop limits movement of the free end of the materil Chum 3 Drawing al and causes the stopped material to press against a concave [52] US. Cl 100/4, guide surface, thereby closing an air opening which is located lO0/26 in that concave surface. Closing the air opening actuates a [51] Int. Cl B!) 13/04 fluid cylinder which in turn actuates the gripping mechanism [50] Field of Search /4, 26, to hold the free end of the material against withdrawal when 25 the loop is tightened about the package.
  • the present invention relates to package-binding machines of the type in which a length of material is trained about a package so that portions of the material overlap, whereupon these overlapping portions are fastened together.
  • material refers to any flexible elongated material of indeterminate length, which may be fed from a supply of the same.
  • the present application will disclose the invention in connection with metallic material such as wire or strip, but it is also to be understood that material within the scope of the invention includes plastic strips and webs, foils and other sheet or filamentary materials useful in package binding.
  • fastening herein, with respect to the securement together of the overlapping portions of the material, includes a number of different operations.
  • the operation for fastening metal wires or bands is ordinarily a twisting operation, but it will of course be understood that a number of other fastening operations are also contemplated, such as heat sealing in the case of plastic strip or foil.
  • Machines of this type are already known.
  • one such machine discloses a device in which the end of the material as it completes the loop and overlaps another length of the material closes an air bleed port, which causes the pressure in an air duct to rise thereby actuating mechanism for performing subsequent steps.
  • a device as in the previously mentioned machine has the disadvantage that there is a certain loss of bandmaterial, because the band has to be advanced farther than is necessary for providing enough material for the twist, in order to be able to close the leak opening.
  • the dimensions of the band such as the thickness, are not always exactly the same, and as the relatively moving parts wear, such devices do not always accurately function.
  • variations in the apparatus must be made, in order to accommodate different sizes of band.
  • a device of this type suffers from the disadvantage that the signal for the operation of the fastening apparatus is given before the material has entered the fastening apparatus.
  • Such devices rely on the inertia of the material and the time delay between the signal and the operation of the fastening device, with the result that often there is not a second thickness of material in the fastening device when the fastening device operates, as for example when the material advances too slowly.
  • a thin foil such as a plastic foil or even a plastic band may not have enough edgewise momentum and may wrinkle or clog the machine.
  • these objects are achieved by providing a stop for the leading end of the material just after it has completed the loop, and by providing a concave guideway such that the stopped material is pressed against the concave surface of the guideway by the pressure of the oncoming material, and by positioning in that concave guide surface an air opening whose obturation by the stopped material actuates the mechanism that grips the material.
  • FIG. 1 is a schematic side elevational view of a machine according to the present invention
  • FIG. 2 is an enlarged fragmentary cross-sectional view of a portion of the machine of the present invention, in the area of the circle shown in FIG. 1;
  • FIG. 3 is a simplified fluid circuit diagram of the present invention.
  • FIG. 1 there is shown a guiding frame 1 to which binding material is fed by a reversible drive mechanism 2.
  • a reversible drive mechanism 2 When the material has passed entirely about the loop in frame 1, it passes through a gripping and fastening device 3 after traversing a corner 4 of the frame 1, and then strikes a stop 5.
  • the driving mechanism 2 reverses and the material is tightened about the package 6, the gripping and fastening device 3 holding the free end of the material against return movement and fastening together the overlapping portions of the material, as by twisting, sealing, etc.
  • the structure and operation of the device are entirely conventional and may be as shown in U.S. Pat. No. 3,183,824.
  • FIG. 2 shows the enlarged corner 4 in the area of the circle of FIG. 1.
  • a guide member 12 presents a concave guide surface to the free end of the material, so that the material turns the corner but does not necessarily engage the member 12 during all of its movement about the corner.
  • An air bleed port 20 (FIG. 3) supplies air from a source of air under pressure, to the corner 4, and directs it substantially radially with respect to the curve of guide member 12, and exhausts it through an opening 11.
  • the opening 11 will not be obturated and the flow of air therefrom will not be impeded. But when the free end of the material strikes the stop 5, then the edgewise pressure of the oncoming :material will cause the material to be pressed against the concave surface of guide member 12, thereby at least partially closing the opening 11 and causing the air pressure upstream of opening 11 to rise.
  • FIG. 3 shows what happens when the opening 11 is open or closed.
  • the opening 11 In the position shown in FIG. 3, the opening 11 is open, and air is supplied thereto through the conduit 13, from a conduit 14 that communicates with a source of air under pressure (not shown). Opening 11 is downstream from a restriction 20, so that when opening III is not closed, the air pressure between opening 11 and restriction 20 will be quite low.
  • the pressure in pilot port 16b of a slide valve 16 will also be quite low, so that the spool will stay in the position as shown in FIG. 3 and conduit 13 is connected with conduit 14 through conduits 17 and 18. The spool will be hold in this position by friction of the moving parts of slide valve 16, pilot port 16c being vented.
  • the pressure in conduit 18 will be relatively high compared to the pressure in vented conduit 19, the conduit 18 communicating with the chamber 15 on one side of a control piston and the conduit 19 communicating with the chamber 15a on the other side of this control piston.
  • the control piston will thus be maintained in the FIG. 3 position, and will not activate the fastening device.
  • pilot port 160 will be pressurized momentarily by a pilot valve (not shown) actuated by the joining mechanism.
  • a package-binding machine comprising means for guiding binding material about a looped path, means for supplying binding material to said looped path, and means for holding the free end of the binding material when the latter has reached the end of the looped path; the improvement comprising a dead stop for the free end of the material at the end of said path, a portion of said guide means presenting to the material a concavely curved guide surface, said concavely curved surface having an opening therethrough that is obturated after the free end of the material strikes said dead stop, conduit means for supplying gas under pressure to said opening, and means responsive to an increase in pressure in said conduit means upon obturation of the opening to actuate said holding means said concavely curved surface being spaced from said stop whereby when said free end of the binding material engages said stop said binding material is then caused to press toward and close said opening as said supplying means continues momentarily to feed said binding means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US868370A 1968-10-29 1969-10-22 Package-binding machine with improved gripping means Expired - Lifetime US3589275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6815438A NL6815438A (de) 1968-10-29 1968-10-29

Publications (1)

Publication Number Publication Date
US3589275A true US3589275A (en) 1971-06-29

Family

ID=19805034

Family Applications (1)

Application Number Title Priority Date Filing Date
US868370A Expired - Lifetime US3589275A (en) 1968-10-29 1969-10-22 Package-binding machine with improved gripping means

Country Status (7)

Country Link
US (1) US3589275A (de)
JP (1) JPS5323760B1 (de)
CA (1) CA921385A (de)
CH (1) CH494158A (de)
DE (1) DE1953251A1 (de)
GB (1) GB1259655A (de)
NL (1) NL6815438A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769485A (en) * 1971-12-15 1973-10-30 Toyo Kohan Co Ltd Steel strap welding apparatus for use in an automatic strapping machine
US3901138A (en) * 1972-09-06 1975-08-26 D Bilt Pieter Arnoldus V Turn table device
US3913472A (en) * 1974-01-10 1975-10-21 Fmc Corp Strapping machine with short feed lockout
US4145963A (en) * 1976-11-03 1979-03-27 Signode Corporation Jam-clearing and torque sensing traction wheel assembly and strap feed stopping mechanism
EP0940341A1 (de) 1998-03-03 1999-09-08 Ferag Verpakkingstechniek B.V. Anordnung von Bearbeitungsmaschinen, insbesondere von Kreuzumreifungsmaschinen und Verfahren zum Betrieb der Anordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183824A (en) * 1962-11-13 1965-05-18 Package Sealing Company Export Package binding machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183824A (en) * 1962-11-13 1965-05-18 Package Sealing Company Export Package binding machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769485A (en) * 1971-12-15 1973-10-30 Toyo Kohan Co Ltd Steel strap welding apparatus for use in an automatic strapping machine
US3901138A (en) * 1972-09-06 1975-08-26 D Bilt Pieter Arnoldus V Turn table device
US3913472A (en) * 1974-01-10 1975-10-21 Fmc Corp Strapping machine with short feed lockout
US4145963A (en) * 1976-11-03 1979-03-27 Signode Corporation Jam-clearing and torque sensing traction wheel assembly and strap feed stopping mechanism
EP0940341A1 (de) 1998-03-03 1999-09-08 Ferag Verpakkingstechniek B.V. Anordnung von Bearbeitungsmaschinen, insbesondere von Kreuzumreifungsmaschinen und Verfahren zum Betrieb der Anordnung
US6209449B1 (en) 1998-03-03 2001-04-03 Ferag Verpakkingstechniek B.V. Arrangement of processing devices, in particular of cross-strapping devices, and method for operating the arrangement

Also Published As

Publication number Publication date
CA921385A (en) 1973-02-20
GB1259655A (de) 1972-01-12
DE1953251A1 (de) 1970-07-02
NL6815438A (de) 1970-05-04
JPS5323760B1 (de) 1978-07-17
CH494158A (de) 1970-07-31

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