Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04G—MAKING NETS BY KNOTTING OF FILAMENTARY MATERIAL; MAKING KNOTTED CARPETS OR TAPESTRIES; KNOTTING NOT OTHERWISE PROVIDED FOR
  • D04G1/00—Making nets by knotting of filamentary material
• • 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
  • B65B13/26—Securing ends of binding material by knotting

Definitions

• the invention relates to a device for knotting a flexible link, such as a strap, a string, a rope, a ribbon, etc.
• the invention provides a device for knotting a flexible link, characterized in that it comprises means for supporting the link, a member for moving the link, mounted for rotation around the link in an oblique plane with respect to to this one, means for driving this member in rotation over about one turn to form a turn or a link loop, and means for pulling the link through the turn or loop.
• This device therefore makes it possible to produce a simple node on a link, by means of simple structure, which are easy to implement.
• the means of traction of the link comprise a clamp or a hook mounted at one end of a movable rod of translation along its axis, which forms the support of the link and is oriented perpendicular to it. this.
• the hook mounted at the end of the rod is mobile and connected to drive means moving it between a closed position and an open position for gripping and loosening of the link.
• the link displacement member comprises a C-shaped rotating support on which is fixed a finger extending perpendicular to the plane of this rotating support.
• the stroke of the rod carrying the hook or the link gripper may be limited, so as to pull through the abovementioned turn or link loop, a link loop. When it is necessary to untie a knot, it suffices to pull on the end of the link.
• the device according to the invention finds very diverse and very varied applications in many kinds of industry. It can in particular be used for the production of ties tied around packages of objects to be transported.
• Figure 1 is a schematic side view of a knotting device according to the invention, comprising automatic pliers for supporting the link;
• FIGS. 2 and 3 are schematic front and side views of the rotating member forming part of this device, and its drive means in
• FIG. 5a to 5e schematically illustrate the operation of this device and the making of a node.
• FIGS. 1 to 4 represent the structure of an exemplary embodiment of the knotting device according to the invention.
• This device comprises, as shown in FIG. 1, a fixed frame 10 comprising a rod 12 for guiding a slide 14 secured to the frame 16 of a C-shaped rotating member 18 whose plane extends obliquely with respect to the rod 12 for guiding the slide 1.
• This slide also carries two bearings 20 for guiding in translation a rod 22 which extends through the rotating member 18 and which is moved in translation along its axis, parallel to the guide rod 12, by one or several coupled cylinders 24, which are parallel to the movable rod 22.
• the piston rod of one of the cylinders 24 is connected to the slide 14 by a deflection piece 26, while the piston rod of the second cylinder is connected to the movable rod 22 by a reference piece 2S.
• the slide 14 is moved in translation along the guide rod 12 by a jack 30.
• the device according to the invention further comprises one or two clamps 32 for holding the link, which are in the vicinity of the rotating member 18 and of the movable rod 22, being for example on either side of the latter.
• Each clamp 32 comprises a slide 34 guided in translation on a rod 36 of the frame 10 and movable along this rod by a jack 38.
• the slide 34 carries a jack 40 for opening and closing the two jaws 42 of the clamp, which are movable in rotation each about a horizontal axis and which are connected by two pinions 44 engaged with one another.
• This rotating member 18 in the form of C is constituted by a circular ring, which is interrupted over approximately 60 ° so as to be able to be engaged around the link to be rented when the frame 16 carried by the slide 14 is moved towards the link.
• the rotating member C is supported by the frame 16 and guided by means of rollers 46 comprising circular cheeks 48 for holding the rotating member.
• the means for driving the rotary member 18 in rotation take a drive roller 50 mounted on the output shaft 52 of a geared motor group 54 carried by a support plate 56 pivotally mounted on the frame 16 around a axis 58 parallel to the axis of rotation of the rotating member 18.
• This support plate 56 is pushed by a spring 60 towards the rotating member 18 so that the drive roller is always applied under pressure on the periphery of the rotating member 18.
• Another drive roller 64 can be associated with the rotating member 18, being angularly spaced by about 90 ° from the first drive roller 50.
• This second drive roller 64 is mounted on a support 66 which pivots around an axis 68 parallel to the axis of rotation of the member 18 and which is loaded by a spring 70 so that the roller 64 is applied under pressure to the periphery of the member 18.
• the drive rollers 50 and 64 are linked together by a chain 72 passing over r gear teeth 74 for reference and on gear wheels 76 secured to the pinion axes 50 and 64.
• an element 78 for triggering a detector 80 making it possible, for example, to stop the rotary drive of the rotating member after a complete revolution.
• a finger 82 which extends perpendicular to the plane of the rotating member 18 is fixed on a lateral face of the latter, for example at near one of its ends.
• FIG. 4 shows in more detail the structure of the movable rod 22 which extends through the rotating member 18.
• This rod 22 is tubular and comprises, at its end located on the side of the rotating member 18, a fixed tab 84 with which the end of a bent lever 86 rotatably mounted on the tubular rod 22 cooperates about a transverse axis 88 and connected by a rod 90 to the end of a cylindrical rod 92 guided in translation to the inside of the movable rod 22 by bearings 94.
• This cylindrical rod 92 is associated with a return spring 96 bearing on one of the bearings 94 and on a stop 98 fixed on the cylindrical rod 92.
• the end of the rod 92, opposite the rod 90 cooperates with the stop with the end of the piston rod 100 of a jack 102 whose cylinder is fixed on the movable rod 22, at the end of the latter opposite the lug 84.
• the return spring 96 relaxes and displaces the cylindrical rod 92 in a position corresponding to the closing of the clamp constituted by the tab 84 and the lever 86. This position is shown in solid lines in FIG. 4.
• the rod 92 is moved towards the open end of the tubular rod 22 and moves the lever 86 to the position shown in phantom lines, which corresponds to the open position of the clamp.
• the rotation of the rotary member 18 is then controlled over one revolution in the direction indicated by the arrow 108 (FIG. 5b).
• the finger 82 carried by the rotating member 18 is applied to the link 104 and, at the end of the first half-turn, passes this link under the movable rod 22 and under the other link 106.
• the rotation of the the rotating member 18 continues and, at the end of the second half-turn as shown in FIG. 5c, the finger 82 of the rotating member 18 has brought the link 104 above the movable rod 22 and the other link 106, thereby forming a turn or a link loop 104 around the movable rod 22 and the other link 106.
• the movable rod 22 can then be slightly moved back so that, at the end of the complete turn of the member 18, the finger 82 deposits the link 104 in the open clamp formed by the tab 84 and the movable lever 86.
• the device according to the invention can of course be used with a single flexible link, or with several links as shown in Figures 5a to 5e.
• the knot formed may be a simple knot, or else a knot such as that shown in FIG. 5e, which is very easily undone, by pulling on the free end of the link 104.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Basic Packing Technique (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9348548

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (5)

Family Cites Families (4)

• 1987
  • 1987-03-03 FR FR8702863A patent/FR2611650B1/fr not_active Expired
• 1988
  • 1988-03-03 WO PCT/FR1988/000123 patent/WO1988006553A1/fr not_active Application Discontinuation
  • 1988-03-03 BR BR888805847A patent/BR8805847A/pt unknown
  • 1988-03-03 US US07/279,151 patent/US4913474A/en not_active Expired - Fee Related
  • 1988-03-03 EP EP88902496A patent/EP0304465A1/de not_active Withdrawn

Non-Patent Citations (1)

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