EP2029834B1 - Werkzeug zur bindung von metallstangen - Google Patents

Werkzeug zur bindung von metallstangen Download PDF

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Publication number
EP2029834B1
EP2029834B1 EP07790137A EP07790137A EP2029834B1 EP 2029834 B1 EP2029834 B1 EP 2029834B1 EP 07790137 A EP07790137 A EP 07790137A EP 07790137 A EP07790137 A EP 07790137A EP 2029834 B1 EP2029834 B1 EP 2029834B1
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EP
European Patent Office
Prior art keywords
wire
tool
wire bending
head
rotary
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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.)
Not-in-force
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EP07790137A
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English (en)
French (fr)
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EP2029834A1 (de
Inventor
Evaristo Revelin
Diego Revelin
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Revelin Evaristo & Figli SNC
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Revelin Evaristo & Figli SNC
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Priority claimed from ITVI20060170 external-priority patent/ITVI20060170A1/it
Priority claimed from ITVI20070118 external-priority patent/ITVI20070118A1/it
Application filed by Revelin Evaristo & Figli SNC filed Critical Revelin Evaristo & Figli SNC
Publication of EP2029834A1 publication Critical patent/EP2029834A1/de
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Publication of EP2029834B1 publication Critical patent/EP2029834B1/de
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/122—Machines for joining reinforcing bars
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/122—Machines for joining reinforcing bars
    • E04G21/123—Wire twisting tools

Definitions

  • the present invention concerns a tool for tying metal bars, in particular iron bars used for making the cage-like structures that make up the reinforcement of concrete castings.
  • the tying operations are carried out manually by means of pliers with which the ironworker twists the wire around the metal bars at their crossing points and then, after twisting it, cuts the ends that protrude from the area around which the wire has been twisted.
  • This known technique poses a first drawback, constituted by the fact that the tying operations, being made manually, are long and complex to carry out.
  • a further drawback lies in that it is increasingly difficult to find expert ironworkers on the market.
  • Tying tools of the type described in patent US5431196 are also known, which are provided with jaws inside which the bars to be tied are inserted and with a rotary spindle that winds a metal wire around the bars at their point of intersection, after the wire has been inserted in special crossed seats created in the spindle itself.
  • the tool described in the patent mentioned above has the drawback of being difficult to construct, due to the need to provide the spindle with the seats for the passage of the metal wire.
  • a second drawback is represented by the fact that it is difficult to insert the wire in the seats each time the tool is used.
  • a further drawback is constituted by the fact that the tool tends to jam often during use and therefore is not sufficiently reliable.
  • a further and equally important drawback lies in that the cutting device, which is provided with a pair of opposite rollers for cutting the wire, is complex to construct from a kinematic point of view.
  • Patent US5217049 is also known, concerning a tying tool with jaws that is differentiated from the previous one due to the fact the wire is not crossed inside the spindle, but outside, by means of a conical guide.
  • the cutting system remains difficult to construct, since it consists, also in this case, of two opposite rollers.
  • Embodiments of tools for tying metal bars are also known, which are equipped with jaws where the bars to be tied are inserted and with rotary pliers between whose jaws the wire is passed.
  • the pliers clamp the metal wire and then, rotating on their own axis, twist it around the bar crossing point.
  • the wire is cut by a pair of blades that move one against the other.
  • all the said tools are provided with a single motor that generates all the necessary movements and this involves the need to provide for kinematic means suited to transform the single rotary motion produced by the single motor into more rotary and/or alternated motions to be transferred to the various moving members.
  • wire cutting units are not sufficiently reliable, besides being expensive and difficult to construct.
  • the object of the present invention is to overcome all the drawbacks described.
  • the wire winding means comprise a rotary spindle associated with a rotary head provided with pliers with openable jaws for holding the metal wire and winding it in turns around the metal bars.
  • the metal wire cutting unit is set moving by the rotation of the winding means and is positioned at the level of the wire bending means.
  • the tool is provided with a main motor for rotating the winding means and an auxiliary motor for feeding the wire.
  • the simpler construction of the tool that is the subject of the invention compared to the equivalent tools of known type makes it more reliable to use and therefore less subject to jamming, so that it requires less maintenance.
  • the tool 1 that is the subject of the invention can be seen in its entirety and in longitudinal section in Figure 1 and also in Figures from 2 to 5, which show details of the same in front axonometric view.
  • the tool of the invention can be used also to tie metal rods of a different nature and for different purposes.
  • the tool 1 comprises a frame 2 with a handgrip 3, which supports a reel 4 on which the metal wire F for tying the bars Ba, Bb is wound.
  • a feed unit 5 unwinds the metal wire F from the reel 4 and makes it advance towards wire bending means 6 that shape it to form one or more turns S around the above mentioned bars and at the same time also between means 7 suited to wind the turns S around the above mentioned bars at their crossing point.
  • the reel 4 on which the metal wire F is wound is supported by a pin 11 that, as can be observed, is fixed to and projects from the frame 2, the reel being free to rotate with respect to said pin according to the axis X defined by the pin 11 itself.
  • the feed unit 5 of the metal wire F is positioned immediately downstream of the reel 4, as shown in Figure 1 , and comprises a pair of gear wheels 12, 13 that mesh with each other and between which the wire F itself is included.
  • Figure 1a shows that both gear wheels 12, 13 are provided with a circumferential groove 14 containing the metal wire F, whose profile, in cross section, can be conjugated with the profile of the metal wire itself.
  • the gear wheels 12, 13 cooperate with a reduction kinematic mechanism indicated as a whole by 15 that can be observed in Figure 3 and that sets them rotating.
  • the bevel gear 18 that sets rotating an intermediate shaft 17, passing through the frame 2, whose end is coupled with the gear wheel 12.
  • the bevel gear 18, as shown in Figure 3 is positioned on the side opposite the gear wheels 12, 13 and is connected to an auxiliary motor 19 belonging to the above mentioned power means 9.
  • Engaging and disengaging means 21 for the gear wheels 12, 13 are also provided, which comprise a lever 22 hinged to the central part of the frame 2 through a pin 23, wherein said lever supports at one end 22a the pin of one of the gear wheels, for example the gear wheel 13, while its opposite end 22b on one side counteracts a cam element 24 provided with a manoeuvring rod 25 and on the other cooperates with elastic means 26 fixed to the frame 2.
  • wire bending means 6 it can be observed in particular in Figures from 2 to 5 that they comprise a wire bending channel 27 positioned downstream of the feed unit 5 at the side of a wire bending jaw 28 suited to receive the wire F coming out of the wire bending channel 27 and to shape it to form one or more of the above mentioned turns S.
  • the wire bending channel 27, in particular, is positioned downstream of the feed unit 5 and is created in a wire bending plate 29 associated with the frame 2, to which the wire bending jaw 28 is fixed, against and above the wire bending channel 27.
  • the wire bending channel 27 controls the wire in such a way as to reduce the risk of tangling during use of the tool, thus increasing its reliability compared to the known tools available on the market and in particular compared to the tools described above.
  • the cutting unit 8 is associated with the wire bending means 6 and with the wire bending plate 29 in which the wire bending channel 27 is created.
  • the cutting unit 8 comprises a cutting blade 30 that is mechanically connected to shifting kinematic means indicated as a whole by 31 and is slidingly fitted in a blade holding channel 32 that intersects the wire bending channel 27, being created at the level of the upper part of the wire bending plate 29.
  • the cutting blade 30 is provided at one end with a rack 33 that is coupled with the shifting kinematic means 31 visible in Figures 3 , 4 and 5 that cause its longitudinal movement according to the direction Y defined by the blade holding channel 32 .
  • the cutting blade 30 has, in intermediate position, a recess 34 that houses the wire F to be cut when it comes out of the wire bending channel 27 and defines an inclined cutting edge 35.
  • the shifting kinematic means 31 comprise a toothed pinion 36, supported by the frame 2, which meshes with the rack 33 of the cutting blade 30 and is coupled with rotation levers 37 cooperating with thrust means 38 associated with the means 7 for winding the turns S around the bars Ba, Bb , as will be described in detail below.
  • the movement of the rotation levers 37 is made yielding by elastic mean 39 constituted by a spring 39a .
  • winding means 7 are visible in particular in Figures from 5 to 7 and according to the invention they comprise:
  • the spindle 40 is the shaft of a main motor 46 belonging to the power means 9 and, as can be observed, is supported by the frame 2.
  • the rotary head 41 substantially comprises a cylindrical body 47 provided with the cam means 45 and a central through hole 48 which houses the spindle 40 with which it creates the fixed connection.
  • Each one of the cam means 45 is constituted by a shaped channel 49 with curved profile converging towards the inside of the cylindrical body 47 of the rotary head 41.
  • rotary counter-head 42 As regards the rotary counter-head 42, it can be observed that it also consists of a substantially cylindrical body 50 comprising: the above mentioned pair of pliers 43, means 38 for thrusting the rotation levers 37 and a central through hole 51 which houses the end 40a of the spindle 40 with which it creates an idle connection.
  • pliers 43 As regards the pliers 43, they comprise two opposing jaws 52, in each one of which it is possible to identify:
  • the second shaped projection 56 comprises a spherical profile 56a that is inserted in the corresponding shaped channel 49 of the cam means 45.
  • elastic means 44 are interposed between the rotary head 41 and the rotary counter-head 42, said elastic means comprising a spring 44a, preferably but not necessarily of the helical type, which is included between a first housing 41a obtained in the rotary head 41 and a second housing 42a obtained in the rotary counter-head 42; wherein said housings face each other in such a way as to contain the helical spring 44a.
  • the thrust means 38 are constituted by a projecting body 38a present at the periphery of the substantially cylindrical body 50 of the rotary counter-head 42 that, during the rotation of the rotary counter-head, thrusts against a truncated cone-shaped head 38b associated with the rotation levers 37.
  • main motor 46 and the auxiliary motor 19 both belong to the power means 9 respectively of the winding means 7 and of the feed unit 5 and cooperate with control means 10.
  • control means 10 comprise an electronic programming and control unit 10a, electrically connected to both motors, and push-button means 10b provided on the tool to be used by the operator.
  • the electronic programming and control means 10a in turn comprise adjustable timer means that are at the disposal of the operator and allow him/her to vary the operating time of the above mentioned motors at his/her discretion.
  • the latter in particular, can be of the alternate current or continuous current type and can be powered through the power mains or a battery.
  • Figures 1 and 2 show that, above the wire bending means 6 and before the winding means 7, there is a unit 62 suited to position the bars Ba, Bb to be tied, which serves to define their position so that their crossing point, where they are tied, is substantially at the centre of the turns S.
  • the positioning unit 62 comprises an upper plate 63 fixed to the frame 2, which supports a fork 64 provided with elastic adjusting means 65.
  • the elastic adjusting means 65 comprise a sleeve 66 fixed to the upper plate 63, inside which a pin 67 is fitted, said pin being connected to the fork 64 and said fork having a spring 68 positioned coaxially outside the pin 67 between the fork 64 and the sleeve 66.
  • the tool that is the subject of the invention can use common wire of any type available on the market.
  • the operator couples the reel 4 with the wire F to the pin 11 and then inserts the wire F in the tubular wire-guiding element 20 belonging to the feed unit 5.
  • the operator uses the adjustable timer means of the electronic programming and control unit 10a to adjust the unwinding time of the wire F from the reel 4 and thus its length and the number of turns S, and also the number of revolutions of the winding means 7.
  • the bars are then positioned in such a way as to rest against the fork 64 of the positioning unit 62, after adjusting the latter through the screw 69 , so that the bars are arranged substantially at the centre of the turns S.
  • the electronic unit 10 When the push-button means 10b are operated, the electronic unit 10 activates a programmed operating cycle that includes the following steps, performed through the rotation of the respective electric motors:
  • the rotation of the rotary head 41 takes place in the counterclockwise direction indicated by the arrow A in Figure 9 , where it is possible to observe that at the beginning of the rotation the spring 44a is compressed and at the same time the pliers 43 are closed owing to the contact of the spherical profiles 56a of the jaws 52 with the corresponding shaped channels 49 of the cam means 45.
  • the rotary counter-head 42 is set rotating by the rotary head 41 as shown in Figure 10 and this causes the turns S to be twisted around the bars Ba, Bb at the point of intersection of the latter.
  • the projecting body 38a counteracts the truncated cone-shaped head 38b and moves it in the direction indicated by the arrow C in Figures 11 and 12 , in such a way as to operate the shifting kinematic means 31 and the cutting blade 30 connected to them, in order to cut the wire F.
  • the turns S are thus free starting from the cutting point at the level of the wire bending means.
  • each revolution of the winding means 7 involves a shift of the cutting blade 30, but this does not affect the wire cutting operation, which is carried out in a single step with the first movement of the blade itself.
  • the tool is ready to carry out a new tying operation, repeating all the steps described above.
  • a construction variant of the tying tool that is the subject of the invention, indicated as a whole by 200, can be seen in longitudinal section in Figure 15 and also in Figures from 16 to 19, which show some details of the same in front axonometric view.
  • the tool 200 comprises a frame 202 with a handgrip 203, which supports a reel 204 around which the metal wire F for tying the bars Ba, Bb is wound.
  • a feed unit 205 unwinds the metal wire F from the reel 204 and makes it advance towards wire bending means 206 that are visible in their entirety in Figures 16 and 17 and that shape it to form one or more turns S around said bars.
  • turns S are also arranged between winding means 207 and around said bars Ba, Bb at the level of their crossing point.
  • Power means indicated as a whole by 209, suited to power the winding means 207 and the feed unit 205, cooperate with control means indicated by 210.
  • the reel 204 around which the metal wire F is wound, is supported by a pin 211 that is fixed to and projects from the frame 202, said reel being free to rotate with respect to said pin according to the axis X defined by the pin 211 itself.
  • the feed unit 205 of the metal wire F is positioned immediately downstream of the reet 204, as shown in Figure 15 , and comprises a pair of gear wheels 212, 213 that mesh with each other and between which the wire F is included.
  • Figure 15a shows that both the gear wheels 212, 213 are provided with a circumferential groove 214 containing the metal wire F, whose profile, in cross section, can be conjugated with the profile of the metal wire itself.
  • the gear wheels 212, 213 cooperate with a reduction kinematic mechanism, indicated as a whole by 215, that can be observed in Figure 17 and that sets them rotating.
  • the bevel gear 218 is positioned on the opposite side of the gear wheel 212 and is connected to an auxiliary motor 219 belonging to the above mentioned power means 209.
  • a tubular element 220 Downstream of the pair of gear wheels 212, 213 there is a tubular element 220 for guiding and controlling the wire F while it advances.
  • the engaging and disengaging means 221 for the gear wheels 212, 213 are provided with a lever 222 hinged to the central part of the frame 202 through a pin 223, which supports at one end 222a the pin of the gear wheel 213 and whose opposite end 222b counteracts a cam element 224 provided with a manoeuvring rod 225 and cooperating with elastic means 226 fixed to the frame 202.
  • wire bending means 206 it can be observed in particular in Figures from 16 to 19 that they comprise a wire bending channel 227 positioned downstream of the feed unit 205, beside a wire bending jaw 228.
  • the wire bending channel 227 is positioned downstream of the feed unit 205 and is created in a wire bending plate 229 associated with the frame 202, to which the wire bending jaw 228 is fixed, against and .above the wire bending channel 227.
  • the construction variant described herein is differentiated from the others due to the fact that in opposite position above the wire bending jaw 228 and the wire bending channel 227 there is a wire bending counter-jaw 233 that, as shown in particular in Figure 15 , has one end 233b hinged to the frame 202 through a pin 234 and is associated with manoeuvring means 236 that can be operated by the operator and are suited to make it rotate around the pin 234.
  • the manoeuvring means 236 comprise a flexible cable 237 having one end 237a connected to a manoeuvring lever 238 associated with the frame 202 and the opposite end 237b connected to the counter-jaw 233 through a lever 237c.
  • a sheath 239 covers the flexible cable 237 and an elastic element 235 is interposed between the counter-jaw 233 and the frame 202 for the spontaneous return of the counter-jaw 233 to the initial position when the manoeuvring lever 238 is released.
  • the jaw 228 and the counter-jaw 233 present curved profiles with opposing concavities 228a and 233a, suited to receive the wire F coming out of the wire bending channel 227 and to shape it to form one or more of the above mentioned turns S .
  • the wire bending means 206 comprising the wire bending channel 227 and also the wire bending counter-jaw 233, guarantee better control and higher bending capacity of the wire, thus further reducing the risk of the wire getting entangled during use of the tool.
  • the cutting unit 208 belongs to the wire bending plate 229 and comprises a cutting blade 230 slidingly fitted in a blade holding channel 232 that intersects the wire bending channels 227 and is operatively connected to a thrust cam 231 belonging to the winding means 207 that will be described below.
  • the cutting blade 230 also has, at one end, a cutting profile 230a and at the opposite end a shaped profile 230b that cooperates with the thrust cam 231 belonging to the winding means 207.
  • the cutting blade 230 also has a projection 230c that counteracts an elastic element 270 having one end 270a in contact with the projection 230c and the opposite end 270b fixed to the frame 202.
  • This construction variant of the cutting unit 208 is simpler than the embodiment described above.
  • the direct and axial contact between the cutting blade 230 and the thrust cam 231 favours the cutting operation, since it optimizes the axial thrust exerted by the cam 231 on the cutting blade 230 during the rotation of the winding means 207.
  • winding means 207 are visible in particular in Figures from 15 to 21, where it can be observed that, as in the embodiment described above, they comprise:
  • the spindle 240 is the shaft of a main motor 246 belonging to the power means 209 and, as can be observed, is supported by the frame 202.
  • the rotary head 241 substantially comprises a cylindrical body 247 provided with the cam means 245 and a central through hole 248 which houses the spindle 240 with which it creates the fixed connection.
  • Each one of the cam means 245 is constituted by a shaped channel 249 with curved profile converging towards the inside of the cylindrical body 247 of the rotary head 241.
  • the rotary counter-head 242 also comprises a substantially cylindrical body 250 where there are: the above mentioned pliers 243, the thrust cam 231 of the cutting blade 230 and a central through hole 251 which houses the end 240a of the spindle 240 with which it creates an idle connection.
  • pliers 243 As regards the pliers 243, they comprise two opposing jaws 252, in each one of which it is possible to identify:
  • the second shaped projection 256 comprises a spherical profile 256a that is inserted in the corresponding shaped channel 249 of the cam means 245.
  • elastic means 244 are interposed between the rotary head 241 and the rotary counter-head 242, said elastic means comprising as spring 244a , preferably but not necessarily of the helical type, which is included between a first housing 241a obtained in the rotary head 241 and a second housing 242a obtained in the rotary counter-head 242, which face each other in such a way as to contain the helical spring 244a.
  • the thrust cam 231 is positioned at the periphery of the substantially cylindrical body 250 of the rotary counter-head 242 that, during the rotation of the rotary counter-head, thrusts against a shaped profile 230b present at one end of the cutting blade 230.
  • main motor 246 and the auxiliary motor 219 both belong to the power means 209 respectively of the winding means 207 and of the feed unit 205, and cooperate with control means 210.
  • These comprise an electronic programming and control unit 210a , electrically connected to both motors, and push-button means 210b provided on the tool to be used by the operator.
  • the electronic programming and control means 210a in turn comprise adjustable timer means that are at the disposal of the operator and allow him/her to vary the operating time of the above mentioned motors at his/her discretion.
  • the motors in particular, can be of the alternate current or continuous current type and can be powered through the power mains or a battery.
  • the operator uses the adjustable timer means of the electronic programming and control unit 210a to adjust the unwinding time of the wire F from the reel 204 and thus its length as well as the number of turns S and the number of revolutions of the winding means 207.
  • the bars Ba, Bb are arranged between the wire bending jaw 228 and the wire bending counter-jaw 233 and then the operator activates a programmed operation cycle via the push-button means 210b of the electronic unit 210.
  • the rotation of the rotary head 241 takes place in the counterclockwise direction indicated by the arrow A in Figure 23 , where it is possible to observe that at the beginning of the rotation the spring 244a is compressed and at the same time the pliers 243 are closed owing to the contact of the spherical profiles 256a of the jaws 252 in the corresponding shaped channels 249 of the cam means 245 .
  • the rotary counter-head 242 is set rotating by the rotary head 241 as shown in Figure 24 and this causes the turns S to be twisted around the bars Ba, Bb at their point of intersection.
  • the thrust cam 231 counteracts the shaped profile 230b and moves the cutting blade 230 in the direction indicated by the arrow C of Figure 25 , in order to cut the wire F .
  • the turns S are thus free, starting from the cutting point at the level of the wire bending means.
  • the cutting blade 230 immediately returns to its initial position due to the action of the elastic element 270 that recalls it.
  • the tool is ready to carry out a new tying operation, repeating all the steps described above.
  • the tool that is the subject of the invention in both construction variants, can use common wire of any type available on the market.
  • the tool is simpler to construct than the known tools, especially as regards the means for winding the metal wire around the bars.
  • the wire bending means and the wire cutting unit are more reliable than those present in tying tools of known type.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Claims (15)

  1. Werkzeug (1; 200) zum Zusammenbinden von Stäben (Ba, Bb), insbesondere Eisenstangen für bewehrten Beton, umfassend einen Rahmen (2; 202), dem die folgenden Elemente zugeordnet sind:
    - ein Handgriff (3; 203);
    - eine Spule (4; 204), auf der der Metalldraht (F) zum Zusammenbinden der Stäbe (Ba, Bb) aufgewickelt ist;
    - eine Vorschubeinheit (5; 205) zum Abwickeln der Spule (4; 204) und Vorschieben des Metalldrahts (F);
    - Drahtbiegemittel (6; 206), die dazu geeignet sind, den aus der Vorschubeinheit (5; 205) heraustretenden Draht (F) zu formen, um eine oder mehrere Windungen (S) um die Stäbe (Ba, Bb), die zwischen den Drahtbiegemitteln (6; 206) angeordnet sind, herum zu bilden;
    - Mittel (7; 207) zum Wickeln der Windungen (S) um die Stäbe (Ba, Bb) herum;
    - mindestens eine Zange (43; 243), die dazu geeignet ist, die Windungen (S) aufzunehmen;
    - eine Einheit (8; 208) zum Schneiden des Metalldrahts (F);
    - Mittel (9; 209) zum Antreiben der Wickelmittel (7; 207) und der Vorschubeinheit (5; 205);
    - eine Spindel (40; 240), die zu den Antriebsmitteln (9; 209) gehört;
    - Steuermittel (10; 210) für die Antriebsmittel (9; 209);
    dadurch gekennzeichnet, dass die Wickelmittel (7; 207) Folgendes umfassen:
    - einen Drehkopf (41; 241), der an der Spindel (40; 240) angebracht ist;
    - einen Dreh-Gegenkopf (42; 242), der freilaufend mit dem Ende (40a; 240a) der Spindel (40; 240) axial gegenüber dem Drehkopf (41; 241) verbunden ist, wobei die mindestens eine Zange (43; 243) dem Dreh-Gegenkopf zugeordnet ist;
    - elastische Mittel (44; 244), die zwischen dem Drehkopf (41; 241) und dem Dreh-Gegenkopf (42; 242) angeordnet sind; und
    - Nockenmittel (45; 245), die im Drehkopf (41; 241) vorhanden sind, zum Öffnen und Schließen der Zange (43; 243) während der Drehung der Spindel (40; 240).
  2. Werkzeug (1; 200) nach Anspruch 1), dadurch gekennzeichnet, dass die Spindel (40; 240) die Drehwelle eines Hauptmotors (46; 246) ist, der zu den Antriebsmitteln (9; 209) gehört.
  3. Werkzeug (1; 200) nach Anspruch 1), dadurch gekennzeichnet, dass der Drehkopf (41; 241) einen im Wesentlichen zylindrischen Körper (47; 247) umfasst, der mit den Nockenmitteln (45; 245) sowie mit einem zentralen Durchgangsloch (48; 248) ausgestattet ist, das die Spindel (40; 240) aufnimmt mit der es eine feste Verbindung bildet.
  4. Werkzeug (1; 200) nach Anspruch 1), dadurch gekennzeichnet, dass der Dreh-Gegenkopf (42; 242) einen im Wesentlichen zylindrischen Körper (50; 250) umfasst, der mit mindestens einer Zange (43; 243) sowie mit einem zentralen Durchgangsloch (51; 251) ausgestattet ist, das das Ende (40a; 240a) der Spindel (40; 240) aufnimmt mit dem es eine freilaufende Verbindung bildet.
  5. Werkzeug (1; 200) nach Anspruch 1), dadurch gekennzeichnet, dass die mindestens eine Zange (43; 243) mindestens zwei Backen (52; 252) umfasst, die einander gegenüberliegen und jeweils Folgendes umfassen:
    - einen Zwischenkörper (53; 253), der an einem radialen Schlitz (54; 254), der im zylindrischen Körper (50; 250) des Dreh-Gegenkopfs (42; 242) ausgebildet ist, schwenkbar angebracht ist;
    - einen ersten Formvorsprung (55; 255), der zu den Windungen (S) hin weist;
    - einen zweiten Formvorsprung (56; 256), der zum Drehkopf (41; 241) hin weist, um mit den Nockenmitteln (45; 245) des Drehkopfs (41; 241) zusammenzuwirken.
  6. Werkzeug (1; 200) nach Anspruch 5), dadurch gekennzeichnet, dass der zweite Formvorsprung (56; 256) ein kugelförmiges Profil (56a; 256a) umfasst, das mit den Nockenmitteln (45; 245) zusammenwirkt.
  7. Werkzeug (1; 200) nach einem der Ansprüche 1), 3), 5) oder 6), dadurch gekennzeichnet, dass jedes der Nockenmittel (45; 245) ein Formkanal (49; 249) mit bogenförmigem Profil ist, der zum Inneren des zylindrischen Körpers (47; 247) des Drehkopfs (41; 241) hin konvergiert.
  8. Werkzeug (1; 200) nach Anspruch 1), dadurch gekennzeichnet, dass die elastischen Mittel (44; 244) eine Feder (44a; 244a) umfassen, die zwischen einem ersten, im Drehkopf (41; 241) ausgebildeten Gehäuse (41a; 241a) und einem zweiten, im Dreh-Gegenkopf (42; 242) ausgebildeten Gehäuse (42a; 242a), die zueinander hin weisen, enthalten ist.
  9. Werkzeug (1) nach Anspruch 1), dadurch gekennzeichnet, dass die Drahtbiegemittel (6) Folgendes umfassen:
    - einen Drahtbiegekanal (27), der stromabwärts der Vorschubeinheit (5) angeordnet ist und in einer Drahtbiegeplatte (29) ausgebildet ist, die zum Rahmen (2) gehört und der die Schneideeinheit (8) für den Draht (F) zugeordnet ist;
    - eine Drahtbiegebacke (28), die neben dem Drahtbiegekanal (27) angeordnet ist, gegen die Drahtbiegeplatte (29) angebracht ist und dazu geeignet ist, den aus dem Drahtbiegekanal (27) heraustretenden Draht (F) aufzunehmen und zu einer oder mehreren Windungen (S) zu formen.
  10. Werkzeug (1) nach Anspruch 9), dadurch gekennzeichnet, dass die Schneideeinheit (8) eine Schneideklinge (30) umfasst, die mechanisch mit kinematischen Verschiebungsmittein (31) verbunden ist und gleitend in einem Klingenhaltekanal (32) eingepasst ist, der den Drahtbiegekanal (27) kreuzt und in der Drahtbiegeplatte (29) ausgebildet ist.
  11. Werkzeug (1) nach Anspruch 10), dadurch gekennzeichnet, dass die Schneideklinge (30) an einem Ende mit einer Zahnstange (33), die mit den kinematischen Verschiebungsmitteln (31) gekoppelt ist, und an einer mittleren Stelle mit einer Ausnehmung (34) ausgestattet ist, die eine geneigte Schnittkante (35) definiert, die den zu schneidenden Draht (F) aufnimmt, der aus dem Drahtbiegekanal (27) heraustritt.
  12. Werkzeug (1) nach Anspruch 11), dadurch gekennzeichnet, dass die kinematischen Verschiebungsmittel (31) ein Zahnrad (36) umfassen, das in die Zahnstange (33) der Schneideklinge (30) eingreift und mit Drehhebeln (37) verbunden ist, die mit Schubmitteln (38) zusammenwirken, die dem Dreh-Gegenkopf (42) zugeordnet sind.
  13. Werkzeug (1) nach Anspruch 1), dadurch gekennzeichnet, dass die Vorschubeinheit (5) mindestens ein Paar aus Zahnrädern (12, 13) umfasst, die ineinander eingreifen, zwischen denen der Draht (F) vorhanden ist und die mit einem kinematischen Reduktionsmechanismus (15) zum Drehen der Zahnräder (12, 13) und zum Vorschieben des Drahts (F) zwischen diesen zusammenwirken.
  14. Werkzeug (1) nach Anspruch 1), dadurch gekennzeichnet, dass die Antriebsmittel (9) einen Hauptmotor (46), der den Wickelmitteln (7) zugeordnet ist, und einen Hilfsmotor (19), der der Vorschubeinheit (5) zugeordnet ist, umfassen, wobei beide Motoren (46, 19) elektrisch mit den Steuermitteln (10) verbunden sind.
  15. Werkzeug (200) nach Anspruch 1), dadurch gekennzeichnet, dass die Drahtbiegemittel (206) Folgendes umfassen:
    - einen Drahtbiegekanal (227), der in einer Drahtbiegeplatte (229) ausgebildet ist, die zum Rahmen (202) gehört und der die Schneideeinheit (208) zugeordnet ist;
    - eine Drahtbiegebacke (228), die neben dem Drahtbiegekanal (227) gegen die Drahtbiegeplatte (229) angebracht ist;
    - eine Drahtbiege-Gegenbacke (233), die der Drahtbiegebacke (228) und dem Drahtbiegekanal (227) gegenüberliegt,
    wobei die Backe (228) und die Gegenbacke (233) dazu geeignet sind, den aus dem Drahtbiegekanal (227) heraustretenden Draht (F) derart zu formen, dass eine oder mehrere Windungen (S) gebildet werden.
EP07790137A 2006-06-07 2007-06-07 Werkzeug zur bindung von metallstangen Not-in-force EP2029834B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITVI20060170 ITVI20060170A1 (it) 2006-06-07 2006-06-07 Utensile legatore di barre metalliche
ITVI20070118 ITVI20070118A1 (it) 2007-04-19 2007-04-19 Utensile legatore di elementi a sviluppo prevalentemente longitudinale
PCT/IT2007/000405 WO2007141822A1 (en) 2006-06-07 2007-06-07 Tool for tying metal bars

Publications (2)

Publication Number Publication Date
EP2029834A1 EP2029834A1 (de) 2009-03-04
EP2029834B1 true EP2029834B1 (de) 2010-07-28

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EP (1) EP2029834B1 (de)
AT (1) ATE475758T1 (de)
DE (1) DE602007008093D1 (de)
WO (1) WO2007141822A1 (de)

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CN107849859A (zh) * 2015-07-22 2018-03-27 美克司株式会社 捆扎机
CN108457474A (zh) * 2016-12-29 2018-08-28 美克司株式会社 捆扎机
CN111691677A (zh) * 2015-07-22 2020-09-22 美克司株式会社 捆扎机

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BRPI1012031B8 (pt) 2009-05-27 2022-09-06 Jbj Mechatronic Aps Método e aparelho de amarração para amarrar um arame ao redor de um ou mais objetos
CN203237416U (zh) * 2013-05-23 2013-10-16 台州市新大陆电子科技有限公司 钢丝绕丝总成以及钢筋捆扎机
NZ710453A (en) 2014-07-31 2019-05-31 Max Co Ltd Reinforcing bar binding machine
JP6926446B2 (ja) 2016-11-10 2021-08-25 マックス株式会社 結束機
JP7280767B2 (ja) * 2019-07-05 2023-05-24 株式会社マキタ 鉄筋結束機
IT202000021862A1 (it) * 2020-09-16 2022-03-16 Schnell Spa Metodo ed apparecchiatura per legare fili metallici e simili prodotti

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US3026915A (en) * 1958-10-01 1962-03-27 Kato Engineering Company Wire twister
BE738782A (de) * 1969-09-12 1970-02-16
US5217049A (en) 1991-08-02 1993-06-08 Gateway Construction Company, Inc. Power rebar typing tool
US5431196A (en) 1994-01-03 1995-07-11 Belcan Specialty Equipment Engineering Division Of Belcan Engineering Groups, Inc. Power rebar tying tool
AU2002323936B2 (en) * 2001-07-25 2008-02-21 Max Co., Ltd Reinforcing steel bar tying machine
JP3624873B2 (ja) 2001-10-29 2005-03-02 マックス株式会社 鉄筋結束機の結束線捩り装置
KR100436446B1 (ko) * 2003-08-29 2004-06-30 주식회사 하나 철근 자동결속기

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107849859A (zh) * 2015-07-22 2018-03-27 美克司株式会社 捆扎机
CN111691677A (zh) * 2015-07-22 2020-09-22 美克司株式会社 捆扎机
US11459778B2 (en) 2015-07-22 2022-10-04 Max Co., Ltd. Binding machine
US11976480B2 (en) 2015-07-22 2024-05-07 Max Co., Ltd. Binding machine
CN108457474A (zh) * 2016-12-29 2018-08-28 美克司株式会社 捆扎机

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EP2029834A1 (de) 2009-03-04
WO2007141822A1 (en) 2007-12-13
ATE475758T1 (de) 2010-08-15
DE602007008093D1 (de) 2010-09-09

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