EP0664256B1 - Outil de tension et de fermeture pour encercler un objet avec une bande thermoplastique - Google Patents

Outil de tension et de fermeture pour encercler un objet avec une bande thermoplastique Download PDF

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Publication number
EP0664256B1
EP0664256B1 EP94117501A EP94117501A EP0664256B1 EP 0664256 B1 EP0664256 B1 EP 0664256B1 EP 94117501 A EP94117501 A EP 94117501A EP 94117501 A EP94117501 A EP 94117501A EP 0664256 B1 EP0664256 B1 EP 0664256B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
rocker
shoe
wheel
lever
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
EP94117501A
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German (de)
English (en)
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EP0664256A1 (fr
Inventor
Nikolaus Stamm
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.)
Orgapack Verwaltungs AG
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Orgapack AG
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Publication date
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Publication of EP0664256A1 publication Critical patent/EP0664256A1/fr
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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
    • B65B13/22—Means for controlling tension of binding means
    • 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
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
    • B65B13/327—Hand tools

Definitions

  • the invention relates to a tensioning and closing device for strapping an object with a plastic band according to the preamble of patent claim 1.
  • Such a device is known from the patent DE 30 13 429 C2.
  • the tensioning wheel is then rotated by means of a motor drive, as a result of which the band arranged below the pivot axis of the seesaw is tensioned.
  • the known device has the disadvantage, among other things, that the rocker with the tensioning wheel presses against the belt and the tensioning shoe with increasing force with increasing tension, which leads to rapid wear on the tensioning shoe.
  • the tensioning unit must be designed to be correspondingly stable and therefore heavy.
  • the rocker with the tensioning wheel jams during the tensioning process due to the progressive pressing force between its bearing and the tensioning shoe, so that it is very difficult to release the strap tension again without severing the strap. This means that plastic tape is lost if the tensioning process is not carried out satisfactorily for some reason.
  • a device for connecting two ends of a plastic band which has a tensioning device which can be pivoted about an axis and a welding device.
  • a pretensioner with a compression spring and a tubular sleeve clamps one end of the band between a tensioning wheel and an intermediate piece and the other end of the band between the intermediate piece and a base plate.
  • the tensioning wheel is turned by means of a tensioning lever to tension the band to be welded.
  • the end of the tape is cut off and the welding device is activated by operating a separate locking lever.
  • the hand-held welding device for thermoplastic strapping tapes known from EP-A-0 006 191 relates to a device in which, after lifting a fan lever, a band end is brought between a clamping surface and a clamping piece and clamped by lowering the fan lever.
  • the other end of the belt is inserted between a tension bed and a tension roller.
  • the tensioning roller is pressed against the end of the belt to be tensioned by means of a return spring.
  • the belt is tensioned by means of a separate actuating lever which can be coupled to the tensioning roller via a one-way clutch and to a heating element, a cutting device and a press ram via a drag clutch.
  • the band is tensioned below the pivot axis of the tensioning device or the actuating lever.
  • the invention has for its object to provide a generic tensioning and closing device in which the seesaw with the tensioning wheel exerts sufficient pressing force on the band to be tensioned on the one hand and on the other hand can be lifted again without great effort in any position of use of the device.
  • the clamping and closing device is shown schematically in a side view. It is placed on an object 2 to be strapped with a thermoplastic plastic band 1 and comprises a housing 3 with a tensioning unit 4 and a closing unit 5.
  • the plastic band 1 is placed around the object 2, and two of its ends 6, 7 to be closed are removed from the Clamping unit 4 held.
  • the closing unit 5 is suitable for connecting the two overlapping ends 6, 7 in a manner known per se after tensioning the plastic band 1, for example by friction welding.
  • a separating device (not shown) can be arranged downstream of the tensioning unit 4 for separating the required plastic strip section from the supply roll.
  • the housing 3 has a base plate 8 on which the clamping unit 4 and the closing unit 5 are fastened.
  • the tensioning unit 4 has two tooth plates 9, 9 'for holding a section of the lower end 7 of the plastic band 1 to be closed.
  • a tensioning shoe 10 is fastened to the upper toothed plate 9 for receiving a section of the upper end 6 of the plastic band 1 to be closed.
  • a pivotable rocker 11 is provided with a toothed tensioning wheel 13 which can be driven via a tensioning shaft 12 for pressing the upper end 6 of the plastic band 1 against the tensioning shoe 10 and for grasping the upper end 6 when the tensioning shaft 12 rotates, so that the plastic band 1 is tensioned in the tensioning direction 14 in a manner known per se, as will be explained below.
  • the bearing 15 of the swiveling rocker 11 is arranged on the side of the tensioning shoe 10 (here: under the upper end 6 of the plastic band 1) and in the tensioning direction 14 behind it, the rocker axis being between a support surface 16 of the tensioning shoe 10 and the base plate 8.
  • the rocker 11 with the tensioning wheel 13 on the one hand exerts sufficient pressing force on the band 1 to be tensioned, and on the other hand it can be lifted off again in any position of use of the device without great effort.
  • the tensioning shoe 10 and the upper toothed plate 9 are, as will be explained in the following, loosely arranged between the tensioning shaft 12 and the lower toothed plate 9 '.
  • the rocker 11 is essentially pivotable between three positions. When it is pivoted all the way to the right (shown in FIG. 2, the so-called basic position), the tensioning shoe 10 and the upper tooth plate 9 are lifted off the lower tooth plate 9 ', so that the lower end 7 of the plastic band 1 to be closed is between the tooth plates 9, 9 'can be introduced. In a middle position (shown in Fig. 3 the so-called free position) the tooth plates 9, 9 'clamp the lower end 7, and the tensioning wheel 13 is held at a distance from the tensioning shoe 10, so that the upper end 6 of the plastic band 1 to be closed is inserted between the tensioning shoe 10 and the tensioning wheel 13 can. When the rocker 11 is pivoted all the way to the left (shown in FIGS.
  • the tensioning shoe 10 has an at least partially designed as a cylindrical recess bearing surface 16 for receiving the upper end 6 of the plastic band 1 in the free position (FIG. 3) and for supporting the tensioning wheel 13 in the tensioning position (FIG. 5). Furthermore, the tensioning shoe 10 has a support surface 10 'for supporting (via further parts) the tensioning shaft 12 in the free position.
  • the angle ⁇ lies in the plane perpendicular to the tensioning shaft axis between the semi-axis from the tensioning wheel center to the bearing of the rocker 11 on the one hand and the semi-axis from the tensioning wheel center to the center of the bearing surface 16 designed as a cylindrical recess on the other hand between 20 ° and 30 °. It has been found that such an angle ⁇ is optimal for the clamping unit 4.
  • the rocker 11 is connected to the housing 3 via a compression spring 17 with adjustable spring force, so that when the tensioning wheel 13 rests on the tensioning shoe 10, the pressing force of the tensioning wheel 13 on the plastic band 1 on the tensioning shoe 10 can be regulated.
  • the setting of the spring force is by means of an adjusting screw 18 on the Rocker 11 made.
  • a tensioning lever 19 is mounted on the tensioning shaft 12 for tensioning the plastic band 1 when the tensioning wheel 13 rests on the tensioning shoe 10.
  • the tensioning wheel 13 which is also mounted on the tensioning shaft 12, is rotated in a manner known per se by means of a ratchet wheel 27 (FIGS. 2, 4, 6, 7), not shown in FIG , 8, 9), so that it is turned counterclockwise and the plastic band 1 is tensioned in the tensioning direction 14.
  • the closing unit 5 is activated by means of a closing button 21 for the friction welding of the ends 6, 7 of the tensioned plastic band 1.
  • the clamping unit 4 has a locking pawl 25 for locking the rocker 11 in the clamping position (FIG. 5).
  • This locking pawl 25 is arranged on the clamping lever 19, and the housing 3 has a stop 26 for the pawl 25. It serves to limit the stroke of the tensioning lever 19 during the tensioning process. If the tensioning lever 19 were pivoted too far down when tensioning the plastic tape 1, the rocker 11 would namely be moved back from its tensioned position into its free position, which would lead to the undesired loosening of the plastic tape 1.
  • the locking pawl 25 thus ensures that the full stroke of the tensioning lever 19 can be used without undesired loosening of the tensioning wheel 13 during the tensioning process. Their exact effect is explained in more detail with reference to FIGS. 7 and 8.
  • the closing unit 5 Since the closing unit 5 is arranged behind the tensioning wheel 13 in the tensioning direction 14, the end 6 of the closing unit 5 is not tensioned. This is advantageous in the friction welding of the two overlapping ends 6, 7 of the plastic band 1, since one is not tensioned Belt section is easier to vibrate than a tensioned belt section.
  • the tension shaft 12 can also be driven by a motor.
  • the tension lever 19 is unnecessary.
  • FIG. 2 shows a section through the device in a basic position.
  • the tensioning shoe 10 with the support surface 16 and the support surface 10 'and the upper toothed plate 9 connected to the tensioning shoe 10 are made of a light material and are arranged loosely on the base plate 8 via vertical guide pins (not shown), so that they are simply in the basic position the lower tooth plate 9 'can be lifted off.
  • the clamping lever 19 is pressed all the way down, so that the locking pawl 25, the effect of which is explained in more detail with reference to FIGS. 7 and 8, is pressed against the stop 26.
  • the rocker 11 has a stop pin 33 for the tensioning lever 19, so that the rocker 11 is moved clockwise around its bearing 15 counter to the force of the compression spring 17 by the movement of the tensioning lever 19 so that the tensioning shoe 10 and the upper toothed plate 9 can be lifted off the lower toothed plate 9 ': the support surface 10' is not stressed.
  • the tensioning lever 19 is held manually in this basic position, since the compression spring 17 continuously presses in the counterclockwise direction against the rocker.
  • a ball bearing 22 is loosely attached (displaceable perpendicular to the tensioning shaft axis) around the tensioning shaft 12.
  • a rotatable ring element 24 which is connected to the rocker 11 via a tension spring 23 and serves as a wedge.
  • a ratchet wheel 27 is also mounted on the tension shaft 12 and serves to tension the Plastic tape 1 in the tensioned position (Fig. 5). The mounting of the individual parts on the tensioning shaft 12 is explained in more detail with reference to FIGS. 4 and 6.
  • a torsion spring 29 is provided on the locking pawl 25.
  • the closing button 21 has a torsion spring 30.
  • Another pawl 31 is arranged between the closing button 21 and the locking pawl 25.
  • a clamping pawl 32 fastened to the locking button 21 engages in the ratchet wheel 27, and a backstop 40 (not shown here) (see FIGS. 4 and 6) ensures that the clamping shaft 12 can only be rotated in the clamping direction 14 with the clamping wheel 13. As said, the exact effect is explained in more detail with reference to FIGS. 7 and 8.
  • the lower end 7 of the plastic band 1 to be closed can be inserted or removed between the tooth plates 9, 9 '.
  • FIG. 3 shows a section through the device according to the invention in the free position.
  • this position is automatically reached by the pressure of the compression spring 17 when the tensioning lever 19 is no longer pressed down.
  • the compression spring 17 presses the rocker 11 counterclockwise until the tensioning shaft 12 rests on the support surface 10 'of the tensioning shoe 10 via the ring element 24 and the ball bearing 22 (see also FIG. 4). So that the lower band end 7 is firmly clamped between the tooth plates 9, 9 '.
  • the ring element 24 serves as a wedge between the tensioning shaft 12 and the ball bearing 22 and, by actuating the tensioning shaft 12, is in a clamping position (FIG. 5) from the free position (FIG. 3), in which the tensioning wheel 13 is held at a distance from the tensioning shoe 10 ), in which the tensioning wheel 13 presses against the tensioning shoe 10, is movable, as will be explained in the following.
  • the tensioning shaft 12 By actuating the tensioning lever 19 in the direction 20 (in the free position according to FIG. 3), the tensioning shaft 12 is rotated counterclockwise by means of the ratchet wheel 27.
  • the ring element 24 is mounted on the tensioning shaft 12 in such a way that the friction between the tensioning shaft 12 and the ring element 24 is greater than the friction between the ring element 24 and the ball bearing 22.
  • the difference between the two abovementioned frictions is chosen so that when rotating the tensioning shaft 12, by actuating the tensioning lever 19, the ring element 24 is carried along by the tensioning shaft 12, against the force exerted by the tension spring 23.
  • the tensioning wheel 13 can be moved back and forth in the direction 20 and back by means of the ratchet wheel 27 arranged on the tensioning shaft 12 and not shown in FIG. 3 (FIGS. 2, 4, 6, 7, 8, 9) are taken along, so that it is turned counterclockwise and the plastic band 1 is tensioned in the tensioning direction 14.
  • the closing button 21 the closing unit 5 is activated for the friction welding of the ends 6, 7 of the tensioned plastic band 1, as will be explained in more detail with reference to FIG. 9.
  • the locking pawl 25 can be unlocked by pressing the locking button 21.
  • the locking button 21 is designed such that its actuation in a first stroke area of the tensioning lever 19 (see FIG. 9) leads to activation of the closing unit 5 via a switching tab and a lifting lever and in a second stroke area of the tensioning lever 19 (FIGS. 3, 5 , 7, 8) for unlocking the locking pawl 25. This will be described with reference to FIGS. 7, 8 and 9.
  • the tensioning lever 19 When the locking pawl 25 is unlocked, the tensioning lever 19, starting from the tensioning position according to FIG. 5, can be moved further to the right downward in the opposite direction 20 will.
  • the tensioning lever 19 strikes the stop pin 33 (FIGS. 2, 8) of the rocker 11, so that the rocker 11 is taken along by the pivoting of the tensioning lever 19 in a clockwise direction and the tensioning wheel 13 is thus slightly lifted off the contact surface 16 of the tensioning shoe 10 .
  • the tension spring 23 pulls the ring element 24 back into the position according to FIG. 3, where it functions as a wedge between the tensioning shaft 12 and the ball bearing 22.
  • the rocker 11 is thus brought back into its free position during this movement of the tensioning lever 19 (FIG. 3).
  • the tensioning shaft 12 again lies (via the ring element 24 and the ball bearing 22) on the support surface 10 'of the tensioning shoe 10.
  • FIG. 4 shows a further section through part of the device in the free position. The cut is made in the plane perpendicular to the clamping direction 14.
  • the rocker 11 is in its free position.
  • the lower end 7 of the plastic band 1 to be tensioned is clamped between the tooth plates 9, 9 '.
  • the lower tooth plate 9 ' is arranged on the base plate 8.
  • the upper toothed plate 9 is fastened to the tensioning shoe 10, and together they are over, not shown, vertical guide pins loosely arranged on the base plate 8.
  • the tensioning shaft 12 lies, via the ring element 24 and the ball bearing 22, on the support surface 10 'of the tensioning shoe 10.
  • the tensioning wheel 13 is held at a distance from the contact surface 16 of the tensioning shoe 10 by the position of the ring element 24.
  • the tensioning wheel 13 is positively attached to the tensioning shaft 12 by means of a disc spring 35 arranged in a groove 34 in the tensioning shaft 12. Instead, non-positive storage is also possible.
  • the ball bearing 22 is arranged opposite the support surface 10 ′ of the tensioning shoe 10 around the tensioning shaft 12, as seen in the direction of the tensioning shaft 12, between the rocker 11 and the tensioning wheel 13, the rotatable ring element 24 being provided between the tensioning shaft 12 and the ball bearing 22 .
  • the compression spring 17 connected to the housing 3 and the rocker 11, the tension spring 23 connected to the ring element 24 and the rocker 11 and the tensioning lever 19 are shown schematically.
  • the ratchet wheel 27 is positively attached to the tensioning shaft 12 by means of a disc spring 37 arranged in a groove 36 of the tensioning shaft 12. Instead, non-positive storage is also possible.
  • the tensioning lever 19 is mounted on the tensioning shaft 12 by means of a plain bearing, not shown.
  • the locking button 21 protruding from the clamping lever 19 is connected to the clamping pawl 32 (see also FIGS. 2, 7), which engages in the ratchet wheel 27.
  • a guide piece 28 for the tensioning shaft 12 is provided on the rocker 11. Bearings 38, 39 for the tensioning shaft 12 and a backstop 40 formed by clamping bodies are arranged in the guide piece 28, which ensures that the tensioning shaft 12 can only be rotated counterclockwise.
  • a switching tab 41 is mounted next to the ratchet wheel 27 on the tensioning shaft 12 and is firmly connected to the rocker 11.
  • Figure 5 shows a section through the device in the clamping position. As explained above, this position is reached, starting from the free position according to FIG. 3, by pivoting the tensioning lever 19 in the direction 20 and the resulting entrainment of the ring element 24 in the counterclockwise direction.
  • the rocker 11 is lowered, and the tensioning wheel 13 and the tensioning shoe 10 clamp the upper end 6 of the plastic band 1 to be closed.
  • the ball bearing 22 is no longer concentric with the tensioning shaft 12.
  • the rocker 11 is no longer supported on the support surface 10 'of the tensioning shoe 10, but lies on the bearing surface 16 of the tensioning shoe 10 via the tensioning wheel 13.
  • the adjustable compression spring 17 presses the rocker 11 against the tensioning shoe 10.
  • the ring element 24 is rotated into its tensioning position against the force of the tension spring 23.
  • the device is ready for tensioning the plastic band 1.
  • FIG. 6 shows a further section through part of the device in the clamping position. The cut is made in the plane perpendicular to the clamping direction 14.
  • the rocker 11 is in its tensioned position.
  • the lower end 7 of the plastic band 1 to be closed is clamped between the tooth plates 9, 9 'and the upper end 6 of the plastic band 1 to be closed between the tensioning wheel 13 and the tensioning shoe 10.
  • the rocker 11 and the tension shaft 12 are lowered.
  • the ring element 24 is rotated against the force of the tension spring 23 into its clamping position, so that the wedge is pushed away and the rocker rests on the bearing surface 16 of the tensioning shoe 10 via the tensioning wheel 13.
  • the ratchet wheel 27 takes the tensioning wheel 13 with it when the tensioning lever 19 is moved back and forth in the direction 20 and back (Fig. 5), so that it is rotated counterclockwise and tensions the plastic band 1 in the tensioning direction 14.
  • the backstop 40 prevents the tensioning shaft 12 from being turned back clockwise when the tensioning lever 19 is moved down.
  • the plastic band 1 can be tensioned.
  • FIG. 7 shows a section through the device according to the invention with the locking button 21 in a first position.
  • the rocker 11 is in its tensioned position.
  • the locking pawl 25 is held on the tension lever 19 by the torsion spring 29 in its locking position.
  • the closing button 21 is held in its first position by the torsion spring 30.
  • the further pawl 31 is arranged between the closing button 21 and the locking pawl 25.
  • the clamping pawl 32 fastened to the closing button 21 engages in the ratchet wheel 27, so that the clamping shaft 12 and thus the clamping wheel 13 can be rotated in the clamping direction 14.
  • the locking pawl 25 serves to lock the rocker 11 in the clamping position (FIG. 5).
  • the housing 3 has a stop 26 for the locking pawl 25. It limits the stroke of the tensioning lever 19 and thus prevents the rocker 11 from moving back from its tensioned position into its free position and thus prevents the undesired loosening of the plastic band 1 during the tensioning process.
  • the locking pawl 25 thus ensures that the full stroke of the tensioning lever 19 can be used without undesired loosening of the tensioning wheel 13 during the tensioning process.
  • the closing button 21 is pressed against the force of the torsion springs 29 and 30 and thus moved into its second position (FIG. 8).
  • the locking pawl 25 is in the position according to FIG. 8 brought and thus unlocked.
  • the tensioning lever 19 can now be moved clockwise again so that the rocker 11 is moved from its tensioned position (FIG. 5) to its free position (FIG. 3).
  • the upper band end 6 is then released.
  • the tensioning lever 19 is moved further clockwise when the locking pawl 25 is unlocked.
  • the rocker 11 is then taken along by the tensioning lever 19 and brought out of its free position (FIG. 3) into its basic position (FIG. 2).
  • FIG. 8 shows a section through the device of FIG. 7 with the locking button 21 in the second position.
  • the locking pawl 25 is unlocked as described above.
  • the tensioning process has ended and the pawl 32 no longer engages in the ratchet wheel 27.
  • the pawl 31 ensures that the locking button 21 is held in its second position and the locking pawl 25 remains unlocked until the pawl 31 strikes the stop 26.
  • FIG. 9 shows a section through the device according to the invention in a welding position.
  • the rocker 11 is in its tensioned position.
  • the tensioning lever 19 is brought far to the left in the direction 20.
  • the closing button 21 By pressing the closing button 21, the closing unit 5 via the clamping pawl 32, the switching tab 41 arranged on the rocker 11 and the lifting lever 42 attached to the housing 3 become Friction welding of the two band ends 6, 7 activated.
  • the closing button 21 By placing the closing button 21 in the second position, the welding process is thus triggered in this welding position.
  • the tensioning lever 19 is moved back clockwise, so that the tensioning position according to FIG. 5 is reached. Then the plastic band 1 stretched and closed around the object 2 can be released from the device through the transition (via the free position) into the basic position.
  • the tensioning and closing device functions as follows:
  • a plastic band 1 to be tensioned is placed around the object 2 to be strapped.
  • the device is brought into its basic position according to FIG. 2 and held there.
  • the tensioning lever 19 has been moved to the right as far as the stop 26 (FIG. 2) with the locking pawl 25 (FIG. 8) and the rocker 11 (FIG. 3) released, the lower end 7 of the plastic band 1 is inserted between the toothed plates 9, 9 'clamped.
  • the tensioning shoe 10 and the upper toothed plate 9 can be lifted off the lower toothed plate 9 'since the support surface 10' of the tensioning shoe 10 is not stressed.
  • the upper end 6 of the plastic band 1 is inserted between the bearing surface 16 of the tensioning shoe 10 and the tensioning wheel 13.
  • the tensioning lever 19 By actuating the tensioning lever 19 in the direction 20, the tensioning shaft 12 is then rotated so far that the rocker 11 is lowered from its free position (FIG. 3) into its tensioning position (FIG. 5).
  • the upper band end 6 is thus also clamped.
  • the locking button 21 remains in its first position and the locking pawl 25 in its locking position.
  • the plastic tape 1 is tensioned in a manner known per se.
  • the tensioning lever 19 is moved back and forth in the direction 20 and so that the tensioning shaft 12 is rotated by means of the ratchet wheel 27 and the tensioning wheel 13 takes the upper band end 6 in the tensioning direction 14.
  • the locking pawl 25 ensures that, during this tensioning operation, the rocker 11 is not undesirably moved back from its tensioned position (FIG. 5) back into the free position (FIG. 3).
  • the locking pawl 25 can now be unlocked by pressing the locking button 21. Then, by moving the tension lever 19 to the right, the rocker 11 can be easily released again and the plastic band 1 can be tensioned again, as described above. This is made possible by the arrangement of the bearing 15 of the rocker 11 on the side of the tensioning shoe 10 and in the tensioning direction 14 behind it. So it doesn't work unnecessarily lost plastic tape.
  • the tensioning lever 19 When the tensioning process is successful, the tensioning lever 19 is moved to the left (FIG. 9) and the closing unit 5 is activated by actuating the closing button 21, so that the band ends 6, 7 are welded.
  • the locking button 21 is in its second position, and the locking pawl 25 is unlocked.
  • the rocker 11 is brought back into its free position (FIG. 3) and further into its basic position (FIG. 2) when the locking pawl 25 is unlocked by moving the tensioning lever 19 to the right. This releases the tensioned and locked strap.
  • the unused part of the upper band end 6 can be separated and the lower band end 7 can be removed from the tooth plates 9, 9 '.
  • the tensioning and closing device is thus again in the basic position and ready for strapping another object 2.

Claims (12)

  1. Dispositif de tension et de fermeture par scellement pour encercler un objet (2) à l'aide d'une bande (1) en matière synthétique, ledit dispositif comprenant un logement (3) muni d'une unité de tension (4) pour maintenir deux extrémités (6, 7) de la bande (1) en matière synthétique qui doivent être scellées et pour tendre cette dernière, ainsi qu'une unité de fermeture par scellement (5) pour relier les deux extrémités (6, 7) qui se chevauchent, dans lequel l'unité de tension (4) présente un sabot de tension (10), ainsi qu'une roue de tension (13), dentée, qui peut être entraînée via un arbre de tension (12) et qui est fixée à une bascule pivotante (11), pour presser la bande (1) en matière synthétique contre le sabot de tension (10) et pour saisir la bande (1) en matière synthétique en rotation, caractérisé en ce que le palier (15) de la bascule pivotante (11) est disposé, par rapport à l'extrémité (6) de la bande (1) en matière synthétique apte à être pincée entre la roue de tension (13) et le sabot de tension (10), du côté du sabot de tension (10) et dans la direction de tension (14), derrière ce dernier, dans lequel l'axe de la bascule se situe entre la surface d'appui (16) du sabot de tension (10) et une surface d'appui d'une plaque de base (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que le sabot de tension (10) présente une surface d'appui (16) réalisée au moins partiellement sous forme d'un renfoncement cylindrique pour que vienne s'y loger la bande (1) en matière synthétique et pour que la roue de tension (13) y prenne appui, dans lequel, lorsque la roue de tension (13) s'appuie sur le sabot de tension (10), l'angle α formé dans le plan perpendiculairement à l'axe de l'arbre de tension entre le demi-axe depuis le centre de la roue de tension jusqu'au palier (15) de la bascule (11) d'une part, et le demi-axe depuis le centre de la roue de tension jusqu'au milieu de la surface d'appui (16) réalisée sous forme d'un renfoncement cylindrique d'autre part, se situe entre 20° et 30°.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la bascule pivotante (11) est reliée au logement (3) via un ressort (17) dont la force de ressort peut être réglée pour générer une force de pression de la roue de tension (13) sur la bande (1) en matière synthétique se trouvant sur le sabot de tension (12) et pour régler la force de pression.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la bascule (11) est mobile au moyen d'un levier de tension (19) depuis une position de base dans laquelle le sabot de tension (10) n'est pas sollicité en passant par une position de dégagement dans laquelle la bascule (11) s'appuie sur une surface d'appui (10') du sabot de tension (10) et la roue de tension (13) est maintenue à l'écart de la surface d'appui (16) du sabot de tension (10), jusque dans une position de tension dans laquelle la roue de tension (13) s'appuie sur la surface d'appui (16') du sabot de tension (10).
  5. Dispositif selon la revendication 4, caractérisé en ce que la bascule (11) est mobile au moyen du levier de tension (19) et d'une touche de fermeture par scellement (21), depuis la position de tension en passant par la position de dégagement, en retour dans la position de base.
  6. Dispositif selon l'une quelconque des revendications 4 et 5, caractérisé en ce qu'on prévoit un élément annulaire (24) relié à la bascule (11) via un ressort supplémentaire (23) et disposé entre l'arbre de tension (12) et un palier à bille (22) entourant l'arbre de tension (12) avec du jeu et disposé face à la surface d'appui (10') du sabot de tension (10), élément qui est à même d'effectuer une rotation en actionnant l'arbre de tension (12) depuis une première position correspondant à la position de dégagement de la bascule (11) jusque dans une seconde position correspondant à la position de tension de la bascule (11).
  7. Dispositif selon la revendication 6, caractérisé en ce que l'élément annulaire (24) est à même, en actionnant le levier de tension (19), de reprendre la première position à partir de la deuxième position.
  8. Dispositif selon l'une quelconque des revendications 4 à 7, caractérisé en ce que l'unité de tension (4) présente un cliquet de verrouillage (25) pour bloquer la bascule (11) dans la position de tension.
  9. Dispositif selon la revendication 8, caractérisé en ce que le cliquet de verrouillage (25) est disposé sur le levier de tension (19) et le logement (3) présente une butée (26) pour le cliquet de verrouillage (25).
  10. Dispositif selon la revendication 9, caractérisé en ce que le cliquet de verrouillage (25) peut être encliqueté en actionnant la touche de fermeture par scellement (21).
  11. Dispositif selon la revendication 10, caractérisé en ce que, dans une position de soudure du levier de tension (19), l'unité de fermeture par scellement (5) peut être activée via la touche de fermeture par scellement (21).
  12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'unité de fermeture par scellement (5) est disposée, dans la direction de tension (14), derrière la roue de tension (13) pour réaliser une soudure par frottement des deux extrémités (6, 7) de la bande (1) en matière synthétique, qui se chevauchent, en faisant vibrer l'extrémité (6) non tendue.
EP94117501A 1994-01-24 1994-11-07 Outil de tension et de fermeture pour encercler un objet avec une bande thermoplastique Expired - Lifetime EP0664256B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH200/94 1994-01-24
CH20094 1994-01-24

Publications (2)

Publication Number Publication Date
EP0664256A1 EP0664256A1 (fr) 1995-07-26
EP0664256B1 true EP0664256B1 (fr) 1997-03-05

Family

ID=4181535

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Application Number Title Priority Date Filing Date
EP94117501A Expired - Lifetime EP0664256B1 (fr) 1994-01-24 1994-11-07 Outil de tension et de fermeture pour encercler un objet avec une bande thermoplastique

Country Status (7)

Country Link
US (1) US5653095A (fr)
EP (1) EP0664256B1 (fr)
JP (1) JP3487377B2 (fr)
KR (1) KR100318299B1 (fr)
AT (1) ATE149443T1 (fr)
CA (1) CA2137844C (fr)
DE (1) DE59401939D1 (fr)

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DE10026200A1 (de) * 2000-05-26 2001-11-29 Cyklop Gmbh Vorrichtung zum Spannen von Umreifungsbändern

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US5858164A (en) * 1997-06-18 1999-01-12 Midwest Industrial Packaging, Inc. Apparatus for heat sealing plastic strapping
US5863378A (en) * 1997-06-18 1999-01-26 Midwest Industrial Packaging, Inc. Apparatus for heat sealing plastic strapping
DE59907002D1 (de) * 1998-10-29 2003-10-23 Orgapack Gmbh Dietikon Umreifungsgerät
EP0999133B1 (fr) * 1998-10-29 2003-04-16 Orgapack GmbH Appareil de cerclage
US6079457A (en) * 1999-04-09 2000-06-27 Illinois Tool Works Inc. Sealless strapping tool and method therefor
US6412257B1 (en) * 2000-08-28 2002-07-02 Tekpak Corporation Portable and manual binding device
US6345648B1 (en) * 2000-10-16 2002-02-12 Illinois Toole Works Inc. Gripper plug for hand strapping tool
US6708606B1 (en) * 2002-10-31 2004-03-23 Illinois Tool Works, Inc. Strapper with improved winder
ES2393573T3 (es) 2007-02-14 2012-12-26 Orgapack Gmbh Dispositivo de flejado
US7497068B2 (en) * 2007-07-10 2009-03-03 Illinois Tool Works Inc. Two-piece strapping tool
US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
DE102011122157A1 (de) 2011-12-23 2013-06-27 Fromm Holding Ag Umreifungsgerät
EP2865601A1 (fr) * 2012-09-24 2015-04-29 S.I.A.T. SOCIETA' INTERNAZIONALE APPLICAZIONI TECNICHE S.p.A. Dispositif de cerclage mobile
JP6329151B2 (ja) 2012-09-24 2018-05-23 シグノード インターナショナル アイピー ホールディングス エルエルシー バンド掛け装置
EP3028836B1 (fr) * 2014-12-04 2017-11-01 Leister Technologies AG Machine de soudure destinée à relier des bandes de matériau se chevauchant
DE202015009004U1 (de) 2015-07-08 2016-06-10 LINDER GmbH Umreifungsvorrichtung zum Sichern eines Packguts
DE102015111051A1 (de) 2015-07-08 2017-01-12 LINDER GmbH Umreifungsvorrichtung zum Sichern eines Packguts
EP3208072B1 (fr) * 2016-02-18 2019-05-15 Leister Technologies AG Machine de soudage automatique
EP3208071B1 (fr) * 2016-02-18 2019-05-01 Leister Technologies AG Machine de soudage automatique
US11008123B2 (en) 2016-04-18 2021-05-18 Hellermanntyton Co., Ltd. Manual binding tool
KR102185149B1 (ko) * 2016-04-18 2020-12-01 헤라만타이톤 가부시키가이샤 수동 결속 공구
CN107775344A (zh) * 2016-08-26 2018-03-09 昆山金群力精密组件有限公司 全自动铆钉组装、点焊、排除设备
CH712984A2 (de) 2016-09-18 2018-03-29 Signode Ind Group Llc Umreifungsvorrichtung zur Umreifung von Packgut mit einem Umreifungsband.
US10745158B2 (en) 2016-11-06 2020-08-18 Golden Bear LLC Strapping tensioning and sealing tool
EP3560851A4 (fr) * 2016-12-21 2020-08-05 Taizhou Yongpai Pack Equipment Co., Ltd. Machine d'emballage électrique portative
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Also Published As

Publication number Publication date
CA2137844A1 (fr) 1995-07-25
JPH07205915A (ja) 1995-08-08
DE59401939D1 (de) 1997-04-10
EP0664256A1 (fr) 1995-07-26
KR100318299B1 (ko) 2002-04-22
ATE149443T1 (de) 1997-03-15
US5653095A (en) 1997-08-05
KR950031784A (ko) 1995-12-20
JP3487377B2 (ja) 2004-01-19
CA2137844C (fr) 2006-06-27

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