DE60109778T2 - METHOD AND DEVICE FOR INCONVENING AND TENSIONING A WIRE - Google Patents

Abstract

A method and apparatus for twisting and tightening a wire with a free end portion around at least two objects, e.g. iron bars for reinforced concrete, for binding the objects together. The method and apparatus enables a tighter and stronger binding to be performed even by means of a portable device and with the use of less binding wire than required by conventional devices.

Description

Field of invention

The The present invention relates to a method and an apparatus for binding objects, e.g. Steel bars for reinforced concrete, or for binding from branches to trees or to bind any elements together, e.g. for the purpose of Packaging or securing the elements. More specifically, the concerns Invention an improved method and apparatus for twisting and tensioning a wire, the method and apparatus even by means of a portable device and by the use from little tie wire can perform a tighter and stronger tying.

description of the prior art

Tie reinforcing bars in concrete structures is known an expensive process. By manual methods, a wire is spirally wound around the steel bars wrapped around and by means of a wire cutter the free ends of the wire are twisted. Newer considerations, which not only at the expense of binding the rods, but also on the Relate to the development of portable, portable devices for binding led.

The EP 0751270 illustrates an apparatus for bonding reinforcing bars to concrete structures. The apparatus operates by twisting a wire into a loop through a guide arm. A hook binds the reinforcing rods together by twisting the wire loop.

The US 4,252,157 on which the preamble of claim 2 is based, illustrates an apparatus for binding reinforcing bars comprising a differential gear for transmitting a torque from a motor to a binding head or a cutting device.

The both mentioned above Documents reveal binding devices containing the objects Baking, which are designed such that they have a binding wire in a wire loop around the objects to be joined together to lead. The binders also have twisting agents for twisting the wire loop so as to loop around the wire loop to tighten the objects around and thus to fix the objects together pull.

The Existing binders generally have circular jaws on to the wire in circular Lead grinding. This is in contrast to the cross-sectional shape of the pull together Objects that typically form an oval shape, e.g. if two circular steel bars for reinforcement be bound by concrete structures. The result of the circular baking is typically an overuse of the binding wire.

The Existing binders also have twisting means which are arranged to twist the wire loop, the wire loop, e.g. with a rotating hook, without to pull the wire into the wire loop beforehand. This increases the tension of the wire loop when the loop is twisted and thereby a satisfactory binding force is difficult to achieve.

General Description of the invention

It An object of the present invention is an improved method and an improved device for binding objects with a reduced Amount of wire and a raised To provide binding power.

the Accordingly, a first aspect of the present invention relates according to the claim 1 a method for twisting and tensioning a wire with a free end section around at least two objects to put the objects together to bind.

The Designation "freer End section of a wire "refers on a winding of the wire, from which winding the free one End of the wire through the machine and around the machine to be joined together Objects moved around becomes. Instead of winding the wire, the machine can advance use cut wire strips, with the free end of the wire in this case just one of the wire ends would be.

The surface of the twisting part, the surface of a disc with two Be guide holes, the disk being rotatable at the front end of a binding machine is appropriate. The binding machine can be provided with guide jaws, around the wire from one of the holes around the object to be connected and back through the other hole.

In general, the tension of a wire loop increases when the wire loop is twisted. To achieve a sufficient binding force is difficult. A feature of the present invention is that the wire forms a closed loop so that the surface of the twisting part lies between the intersection of the wire and the object. If the wire is such a closed loop with the surface between the Forming overlap of the wire and the objects, the clamping force is already present at the first rotation of the twisting part and it is easy to achieve a sufficient binding force. Selecting an appropriate distance between the points where the wire enters and exits the wire loop through the surface of the twisting part is an important issue. It has been found that a distance between the holes in the surface of at least 2mm, such as between 2mm and 10mm or between 2mm and 6mm, provides for a substantially improved tension of the wire without overstressing the wire , The greater the distance between the holes, the more the wire is tensioned during the first winding of the twisting part.

According to one embodiment, which not by the claims is covered, the present invention relates to a method the wire having an end connected to a source of supply the wire is connected and the wire is cut, before it is twisted. The source of the wire can be a Wire coil and the cutting of the wire may preferably be be made after the wire is stretched. That leads to one lower wire consumption and compared to using pre-cut wire strips for a better way of binding, since the strip has exactly the right length - not too long and not too short. Tensioning the wire before cutting and twisting, minimized over it beyond the excessive consumption of Wire.

Of the Cutting operation may preferably be part of the twisting process accomplished be, e.g. by placing the wire between the washer with the fixation holes and a cut edge is cut. When the disc is turning begins, the wire is simultaneously cut and twisted. It should therefore be clear that cutting the wire is also either before and / or after the twisting of the wire can take place.

According to one Second aspect relates to the present invention according to claim 2 shows a device for twisting and tensioning a wire two objects.

The Device is provided with a Verdrillungsteil, which at least a cutting edge, which is designed such that she cuts the wire when the twisting part is turned. The first hole and the second hole in the twisting part may be so be configured to lead the wire to and from the cheeks. The Holes should be as through holes from the back of the twisting part to the surface opposite to the objects be. The holes should preferably have a mutual distance of 2-10 mm, e.g. 2-6 mm when measured on the surface opposite the object. Preferably, the holes extend not parallel through the twisting part, so that the first and the second hole with each other at a certain distance within cross the twisting part, causing the free end of the wire is forced to the other part of the wire at a given Distance to intersect or even overlap, if the free End led through the second hole becomes. This will cause a strong pull of the wire through the first wrapping of the twisting part, when the part is turned. Preferably, the twisting part removably attached to the binding device as it is in detail later is described. The user of the binding device can then enter Twisting part with a distance between the first and the second Select hole, which a specific requirement corresponds to the clamping force, or the user can twist the part change if the cut edge has to be replaced.

The two jaws, which are designed to surround the two objects, are arranged opposite to each other and are in each other a loop-shaped Configuration opposite. Because often a situation occurs that two reinforcing rods which bind together are present, it is an important aspect of the present invention that two jaws in a non-circular, e.g. in an opposite way circular, To provide configuration. An opposite circular shape the baking ensures a close contact between the jaws and the two reinforcing bars, so that an optimally short length of the wire around the two reinforcing rods can be achieved. It is preferred that the two jaws of the binding device can be easily replaced, so that the user can select baking, which have a dimension that corresponds to a specific task fits or fits to certain dimensions of the reinforcing bars.

The Jaws should be provided with depressions, which the wire lead into the loop. Preferably The wells should be in a radially inward direction Direction be open, leaving the wire, after moving around the objects been led around is, without being limited by the jaws, around the objects can be tied. So that the wire is the indentations of the jaws can follow, even if the depressions in a radially inward direction Direction are open, it is necessary to use a wire with a modulus of elasticity to use, which tries to bend the wire straight out, when the wire is guided along the recesses in the jaws.

One Wire with a modulus of elasticity of at least 50,000 MPa, e.g. in the range of 80,000-160,000 MPa or in the range of 90,000-150,000 MPa, provides sufficient elasticity for functioning the baking.

The wire may be provided wound on wire spools that include enough wire for several hundred bonds. An elastic wire that has been wound onto a circular wire spool typically tends to return to a curved shape when it is detached from the spool. Therefore, when the wire is provided with wire spools, it is preferable to mount the spool and guide the wire into an assembly that assists the wire to pass through the recesses of the jaws. This is in 25 shown, wherein the wire is guided such that the curved shape of the wire supports the wire, that the wire follows the recess, even if the recess is open in a radially inward direction.

The Rotation of the twisting part and the cutting edge may preferably be be carried out by means of an electrically driven motor. On a similar one Way can the feeding of the wire, e.g. from a wire spool or from a cassette or a magazine containing pre-cut wire strips by means of an electrically driven motor are running. According to a preferred embodiment if the device is designed for portable use, e.g. for a construction site without power connections. It is therefore an object to design engines, which means a battery, e.g. the lithium batteries, which are already for electrical Tools are known, can be operated.

The Device can about it in addition to having a transformer, e.g. an electric current at 220 volts or at 110 volts in an electric current at one lower voltage, which in an electrically driven Motor or motors is used to transform. In this way The device can be operated without a battery when power connections are on the construction site are present.

According to one preferred embodiment can either the means of delivery of the wire or the means for twisting the twisting part pneumatically by pneumatically driven motors, e.g. the engines, which driven by pneumatic drills, sanders, etc. are driven become.

The pneumatically driven device may preferably with a gas tank be provided to drive the pneumatic drive means.

According to one another preferred embodiment can either the means of feeding the Wire or the means for twisting the Verdrillungteilils hydraulically by hydraulically driven motors, e.g. the engines, which known from hydraulically driven high performance tools, be driven.

The Engines for feeding of the wire and used to rotate the twisting part, can also any combination between electric, pneumatic or be hydraulically powered motors.

Independently of, whether the wire is supplied electrically, pneumatically or hydraulically and twisted the twisting part electrically, pneumatically or hydraulically the engine may be the same as that used to both supply the engine and the engine Wire is designed as well as for rotating the twisting part, e.g. by applying a transmission with a rotatable power input from the engine and with two rotatable ones Force decreases for the wire feed mechanism and for the rotation of the twisting part.

Of the wire feeding mechanism may preferably be provided such that the wire in a Process both outward just bent and fed is, e.g. by providing a set of three rotating wire feed wheels, with two on one side of the wire and one on the other Side of the wire is present.

According to one preferred embodiment of Invention, the gripping means comprise an electromagnet. The gripping means can also pneumatically or hydraulically or by means of any mechanical or electromechanical means are operated.

Preferably, the operation of the first and / or the second electrically, pneumatically or hydraulically driven motor is controlled by a control system. The control system may be configured to control the speed of the wire feed, the speed of rotation of the twist piece, the force applied to the wire feed mechanism, eg, before a fault signal is blocked, for example in the event that a wire in the wire feed mechanism is blocked. is shown. The control system may also be configured to indicate the remaining length of the wire on the wire spool - eg, by tracking the total duration of the wire feed at a particular speed. The control system may also be configured to apply a predetermined tensile force used, for example by the rotational force which is applied to the Verdrillungsteil is varied. The control system may also be configured to indicate the remaining energy level, eg in a battery for electrically driven engines or in a pressurized gas container for pneumatically driven engines.

Preferably the control system works with means for electronic processing, such as. a CPU or PLC. The tax system can be in a program for execution be contained in the CPU and the program may e.g. in an EPROM or similar Means for electronically storing programs stored be. A display for displaying information which is for the user of Device is relevant, may be connected to the control system. Such information may relate to the aforementioned goals of the control system, e.g. to the user the remaining Length of the Wire on the wire spool, the applied tension pressure, etc. A digital indication of the applied tensile pressure is e.g. for one Nurseryman, which uses the machine to grow plants e.g. to bind to poles, where Some plants are destroyed by too high a tensile pressure can, of special interest. It can also be for an electrician or installer be interesting, which the binding device for binding cables, Pipes, hoses, etc. used.

The Control system can also be designed such that it with a external processor, e.g. a PC, communicates.

through such communication options can Data relating to binding caused by the device accomplished will be loaded onto the PC and e.g. for quality control or for statistical purposes. The data can be in How many bonds a worker can perform a day, such as a lot of wire requires every binding, the average pulling force which is applied at every binding, the number of mistakes etc .. The communication possibilities can also be used to the device by means of a program interface to program the PC.

The Twisting part which faces the objects may preferably from a hardened Steel alloy, such as Titanium alloys or similar metallic or be made of ceramic materials. Since the part easily during the Rotation of the part can come into contact with the objects is it is important that it is made of a material which a wear and tear a tearing resists.

Preferably each of the free end portions of the jaws is formed such that funnel-shaped openings away from the contact between the free end portions of the two Extend baking. The openings are used to guide the wire through the jaws.

The Baking are preferably by means of a spring to a closed Position biased or can be opened and closed mechanically or electromechanically, e.g. by hydraulically, pneumatically or electrically driven Medium and controlled by a CPU or a PLC.

According to one preferred embodiment the invention a device, wherein a support arm on the housing of the Device may be attached to the weight of the device to carry and thus the device at a distance from the hands the operator can be used. The support arm is e.g. for one Operation of the device via the head or to reach objects in confined spaces. The arm can do that in addition, allow ergonomically correct handling of the device, e.g. by transferring the forces which are used to carry the device on the shoulders and / or the back the operator are necessary.

Preferably, the device is provided with a contact surface to secure the device from the objects when the tensioning means tension the wire and thereby the objects are pulled firmly against the device. The contact surface may preferably be present on a non-rotating part of the device, such as on the housing of the binding device, which surrounds, for example, the twisting part. When the wire has been tensioned and the twisting part begins to rotate, the contact surface keeps a distance between the rotating twisting part and the objects. This is very advantageous because it reduces the wear on the twisting part and thereby does not transfer the rotational force to the binding device. The contact surface may alternatively be attached to the Verdrillungsteil. However, in order not to transmit the rotational forces that occur when the rotating twisting member contacts the objects, the contact surface may be provided of a low friction material such as nylon or Teflon ^™ . The contact surface should be arranged interchangeably, so that a periodic replacement is possible. Alternatively, the contact surface may be attached to the twisting member by means of bearing means whereby the contact surface with respect to the objects may be stopped while the twisting member is rotating.

• – Anordnen der zwei Objekte in engem Kontakt,
• – Platzieren eines Verdrillungsteils in einer Position in der Nähe der Objekte, wobei das Verdrillungsteil eine den Objekten gegenüberliegende Oberfläche aufweist,
• – Führen des freien Endabschnitts durch ein Loch oder eine Vertiefung in dem Verdrillungsteil,
• – Führen des freien Endabschnitts auf einem Weg mindestens einmal um die Objekte herum, um so einen Drahtabschnitt in mindestens einer Schleife um die Objekte herum zu wickeln, wobei die Nachgiebigkeit des Drahtes sicherstellt, dass der Draht der Vertiefung in der Oberfläche der Backen in engem Kontakt mit den Backen folgt,
• – Führen des freien Endabschnitts durch oder in das Verdrillungsteil, wobei der Draht eine geschlossene Schleife ausbildet und eine Überschneidung von zwei Drahtabschnitten definiert, so dass sich die Oberfläche des Verdrillungsteils zwischen der Überschneidung und den Objekten befindet,
• – Greifen des Endes des freien Endabschnitts des Drahtes,
• – Spannen des Drahtes durch Ziehen,
• – Drehen des Verdrillungsteils, um so den Draht zu verdrillen.

According to a third aspect, the vor The invention relates to a method of twisting and tensioning a compliant wire with a free end portion around at least two objects to tie the objects together using a device comprising two jaws configured to surround two objects Jaws are arranged opposite to each other and another in a loop-shaped configuration, each of the jaws having an object-facing surface and a recess in the surface, the method comprising:

• Arranging the two objects in close contact,
• Placing a twisting part in a position close to the objects, the twisting part having a surface opposite the objects,
• Passing the free end section through a hole or depression in the twisting part,
• Guiding the free end portion on a path at least once around the objects so as to wind a wire section in at least one loop around the objects, the compliance of the wire ensuring that the wire is in intimate contact with the recess in the surface of the jaws with the cheeks follows,
• Guiding the free end section through or into the twisting part, wherein the wire forms a closed loop and defines an intersection of two wire sections, such that the surface of the twisting part is located between the intersection and the objects,
• Gripping the end of the free end portion of the wire,
• - tensioning the wire by pulling,
• - Turning the twisting part so as to twist the wire.

The Yield of the wire provides a pressure of the wire against the jaws of the binder and thus enables reliable work the binding device with non-circular jaws, which in one radially inwardly directed direction are open. It's found out have been that a wire which is so elastic that he has a strives to regain certain form when it is detached, favorably for the Binding can be used. A modulus of elasticity above 50,000 MPa gives a desirable flexibility and thus the desired pressure against the cheeks. For example a coiled wire can either extend straight outwards, when he's detached from the coil or he can go for a curved shape when he is away from the Coil is detached. When the free end of the wire through the hole in the twisting part and guided into the recess in the jaws, provides the flexibility of the wire sure that the wire follows the recess and that the wire thus surrounding the objects.

According to one fourth aspect, the present invention relates to the use of a Wire with a flexibility, which allows the wire, in firm contact with the depressions in the jaws of a binding device while of binding an object. The wire can be made, for example be made of an iron alloy, which in the range 1.2-2.0% manganese (Mg), 0.8-1.2% Silicon (Si) and 0.06-0.15% Includes carbon (C). Such wires can be on the open market, e.g. purchased from suppliers of welding wires become.

• – ein Verdrillungsteil mit einer den Objekten gegenüberliegenden Oberfläche, wobei das Verdrillungsteil in einer Weise angebracht ist, dass die Oberfläche die zwei Objekte berühren oder sich in einem engen Kontakt mit den zwei Objekten befinden kann,
• – zwei Backen, welche ausgestaltet sind, um die zwei Objekte zu umgeben, wobei die Backen einander entgegengesetzt und einander gegenüberliegend in einer nicht kreisförmigen schleifenförmigen Konfiguration angeordnet sind, wobei jede der Backen einen freien Endabschnitt und ein Ende, welches schwenkbar in der Nähe des Verdrillungsteils angebracht ist, aufweist,
• – mit Antriebsleistung angetriebene Mittel, um einen Draht durch ein erstes Loch oder eine Vertiefung in dem Verdrillungsteil und entlang von Führungsmitteln in einer ersten der zwei Backen zu dem freien Endabschnitt dieser Backe und weiter zu dem freien Endabschnitt der zweiten Backe und von dort entlang von Führungsmitteln in der zweiten Backe und weiter durch das Verdrillungsteil derart zu führen, dass ein Abschnitt des Drahtes mindestens einmal um die Objekte herum gewickelt wird, wobei der Draht eine Schleife ausbildet und eine Überschneidung von zwei Drahtabschnitten definiert,
• – den Draht, welcher eine Elastizität aufweist, welche ausreicht, um den Draht gegen die Führungsmittel der Backen zu pressen,
• – Greifmittel zum Greifen eines freien Endabschnitts des Drahtes, wenn der Draht um die Objekte herum geführt worden ist,
• – Spannmittel zum Spannen des Drahtes, wenn er durch die Greifmittel gegriffen worden ist,
• – mit Antriebsleistung angetriebene Mittel zum Drehen des Verdrillungsteils, um so zwei Abschnitte des gespannten Drahtes umeinander herum zu verdrillen.

According to a fifth aspect, the present invention relates to a device for twisting and tensioning a wire around two objects, which comprises:

• A twisting member having a surface opposite to the objects, the twisting member being mounted in a manner such that the surface can contact the two objects or be in close contact with the two objects,
• Two jaws configured to surround the two objects, the jaws being disposed opposite and opposite each other in a non-circular loop configuration, each of the jaws having a free end portion and an end pivotally proximate the twisting portion is attached,
• Drive power driven means for passing a wire through a first hole or recess in the twisting part and along guide means in a first of the two jaws to the free end portion of that jaw and further to the free end portion of the second jaw and then along guide means in the second jaw and further through the twisting part such that a portion of the wire is wound at least once around the objects, the wire forming a loop and defining an intersection of two wire sections,
• The wire, which has an elasticity sufficient to press the wire against the guide means of the jaws,
• Gripping means for gripping a free end portion of the wire when the wire has been passed around the objects,
• Tensioning means for tensioning the wire when gripped by the gripping means,
• - Driven power driven means for rotating the Verdrillungsteils, so as to twist two portions of the tensioned wire around each other.

An elasticity which is sufficient to press the wire against the guide means of the jaws, means that the wire strives in a predetermined shape, for example in a rectilinear shape or in a curved shape. By a suitable arrangement of the wire with respect to the guide means of the jaws, it can be ensured that the wire strives radially outwards, while the wire is guided by the guide means. Accordingly, the wire is passed around the objects through the jaws even though the jaws are not circular and open in a radially inward direction.

description a preferred embodiment

A preferred embodiment of the invention will now be described in detail with reference to the drawing, wherein applies:

1 represents a binding device according to the invention shown from the side,

2a represents the binding device of the 1 with the outer housing removed,

2 B illustrates details of a binding device according to an alternative embodiment

3 provides details of the binding devices of the 1 and 2 represents,

4 represents the binding device seen from above,

5 represents an alternative embodiment of the binding arrangement,

6 represents a preferred embodiment of a polar head,

7 represents a binding head,

8th represents a spindle,

9 represents a housing of the binding device,

10 represents a wire mouthpiece,

11 represents an axial pulling device,

12 represents a wire-spindle lock,

13 represents a wire lock,

14 represents a floating platform

15 represents the starting point of a jaw,

16 represents a cheek,

17 illustrates a wire alignment device,

18a and 18b are functional descriptions of a control system for the binding device,

19 illustrates various embodiments of the housing for the binding device,

20 represents an alternative embodiment of the invention,

21 represents the embodiment of the 20 in a different state of binding,

22 represents a preferred embodiment of the contact surface,

23 represents details of the gripping means with the locking claw,

24 provides details of the spindle lock according to the in 20 illustrated embodiment of the gripping means,

25 provides an overview of the binding device with motor,

26 illustrates the binding process of a binding device according to the present invention, and

27 illustrates a particular embodiment of the locking claw.

Regarding 1 has the binding device 1 a handle 2 with a switch 3 for actuating the binding device. The drive unit provides an electrical current for driving the binding device. The binding device may be provided with other energy means, such as pressurized gas, with a hydraulic pressure, or it may be powered electrically directly from the mains.

The binding device has a wire spool 5 to feed wire to the machine. Instead of a wire spool, the binding device may be provided with a cassette with pre-cut wires. The ad 6 is configured to represent the condition of the binding device, such as failure, battery level, number of cuts, remaining length of wire on the wire spool or number of remaining cuts, as well as the setting of the binding device, such as the binding force.

The ad 6 is not dargestell with a connected to the control system. The control system may preferably be configured to accept a login input from the user of the binding device, the input identifying the user with respect to the control system. The control system then selects a predetermined setting according to the identified user. The predetermined setting may relate, for example, to the binding force and the binding speed, or it may relate to the operation of the switch 3 Respectively.

The desk 3 can be designed for specific modes. A mode could be that the binding device binds upon actuation of the switch. Another mode could be that the switch is operated once and then the binding device binds upon activation of the jaws or upon an indication that the objects to be joined together are between the jaws. The switch may further comprise means for counteracting the binding device in the event of errors. In one mode, opposing work could be automatically activated upon detection of a fault. In another mode, releasing the switch before the binding process has finished could activate the opposite action. The error that is automatically detected by the control system could be, for example, detecting too high a resistance in the wire feed mechanism that occurs when the wire is blocked, or it could occur when a binding operation is initiated with insufficient remaining wire the wire coil is present. In this case, an in 2 illustrated switch 11 an error and the control system responds according to the selected failure mode.

Continue with reference to 1 has the binding device baking 7 on to grab the objects. The front end of the jaws is skewed 8th which guides the objects through the opening between the jaws. The jaws can preferably be compressed by means of springs and opened by means of the force of the objects which are pressed through the opening between the jaws. The jaws can also be opened or closed by mechanical or electromechanical means, such as hydraulic, pneumatic or electrical actuation means.

The polar head 9 has a combined wire guiding and wire twisting function which will be described later.

By means of the Spanneinstellmechanismus 10 the user can adjust the clamping force. The clamping force can be done in three ways. One is that the wire is attached and the wire feed mechanism pulls backwards. One is that the wire is locked with a pulling arm and by means of a pulling device which pushes a spindle lock forward to lock the wire while pushing back a sliding platform with the wire feeding mechanism. Finally, the wire can be pulled by twisting the wire, which is effected according to the invention by a polar head. The mentioned parts will be described later in detail.

Regarding 2a is a binding motor 12 with a binding gear 13 connected. The tying gear changes the drive ratio of the motor such that the tying mechanism rotates at a speed adapted to the wire, such as at 100-1000 rpm. The transmission 13 is through a later to be described mechanism with the polar head 9 connected.

The housing 14 The binding device is in detail in 9 whereas the detailed mechanism of the housing works best in 3 and 5 is shown.

The electromagnet 15 activated by the pinion 19 , the tab connection 22 and the pivotally connected arm 23 the wire lock 26 ,

The wire feed tube 16 guides the wire from the wire spool through the wire feed mechanism 20 , which the wire feed rollers 21 includes, and further through the wire tube 24 and the wire mouthpiece 25 to the polar head 9 and the cheeks 7 , The wire feed mechanism is a type known, for example, from welding machines and includes means for adjusting the gap between the wire feed rollers so as to allow the use of wires of different diameters. The wire feed rollers 21 be by means of a wire feed motor 17 , which with a Drahtzuführgetriebe 18 connected, turned. The wire feed rollers 21 may preferably be provided with projections, such as a gear or sprocket. The projections prevent the wire from slipping between the rollers. According to a preferred embodiment, there are three wheels so that the wire is both fed forward in one operation and also straight outwards by means of alignment means 59 and delivery means, as in 17 are shown combined.

The reference number 27 denotes the center line of a rotation of the polar head and the reference numeral 28 denotes the intersection where the wire intersects the centerline of the rotation.

Regarding 2 B is the pull arm 29 with axial traction devices, which in 11 and on best related in 5 are shown connected. When the axial traction devices rotate about the center line 27 be activated around, tilts the pull arm 29 around the joint 35 around and pushes the wire feed mechanism 20 in a backward direction along the midline 27 , When the wire feed rollers 21 Locked, this causes a tensioning of the wire.

The tension adjustment mechanism 10 is with the adjustment pin 30 connected such that the adjustment pin 30 upon rotation of the adjustment mechanism 10 around the midline 27 the wire spindle lock 36 shifts. The movement of the pen 30 in the slot 37 causes the shift. The pencil 30 is on the movable bearing base 38 attached, which is the spring 39 against the wire spindle lock 36 suppressed.

The opto-housing 31 is on the binding housing 14 appropriate. The opto-housing comprises the axial traction devices and is connected to the binding gear 13 connected such that the rotation of the binding gear is transmitted to the axial traction devices. As in 5 is shown, includes the opto-housing 31 In addition, an opto-disc 40 , which by means of the opto-circuit assembly 41 indicates the angular position or axial position of the drive shaft of the binding gear and thus the axial position of the polar head. The opto-circuit assembly 41 is connected to the control system. The opto-circuit assembly 41 is through the mounting ring 42 attached to the binding device. As an alternative to the opto-circuit, the position of the polar head may be indicated by magnetic switches or by purely mechanical switches or by a combination of magnetic, mechanical or optical switches or by any sensors capable of indicating the position of the polar head. be determined.

Continue with reference to 2 B is the sliding platform 32 with bars 34 connected. The feather 33 is between the sliding platform 32 and the opto-housing 31 available. When the wire feed rollers work in reverse so as to tension the wire, the sliding platform becomes in a forward direction along the centerline 27 pulled, until the sliding platform the switch 43 . 4 , reached. Actuation of the switch activates the binding motor 12 which rotates the polar head to twist the wire. The twisting of the wire additionally tightens the wire.

Regarding 3 is the tie head 44 by means of drive pins 48 , which on the pressure transmitting axle 45 the wire spindle lock are attached, with the polar head 9 connected. The pressure transmitting axle 45 is axially movable on the spindle 49 appropriate. The spindle 49 is configured such that it has a rotational force on the pressure transmitting axle 45 transmits, with the pressure transmitting axis 45 by means of the slot 50 pushed forward along the midline. After the wire has been looped through the jaws around the objects to be joined together, the free end of the wire returns through the polar head and binding head and activates the switch 46 , The activation of the switch causes the activation of the electromagnet 15 , which the wire lock 26 activated and beyond the wire feed motor 17 activated, so that it runs reversed, so that the wire is stretched. The desk 46 can be omitted, and the electromagnet 15 or the wire feed motor 17 can be activated by means of a timer, which measures the time from the beginning of the binding process, using knowledge about the wire feeding speed.

Regarding 4 is the spring 47 designed to adjust the pressure on the wire between the wire feed rollers 21 in the wire feeding mechanism 20 to enable.

Regarding 5 the wire gets through the binding head 44 and the wire mouthpiece 51 at the position 52 cut - the wire mouthpiece 51 is also in 10 shown.

Regarding 6 is the polar head with two holes 53 provided, through which the wire penetrates into the jaws or leaves the jaws. The oppositely curved shape of the holes ensures constant support of the wire throughout the twisting process.

Regarding 7 has the binding head 44 a curved surface 54 on. The curved surface provides by a rotation of the binding head 44 for a pressure on the wheel 55 which is in 3 is shown. The wheel pushes the wire lock 26 to the rear to release the wire lock after the spindle lock 36 fixed the wire.

8th and 9 represent details of the spindle and the housing of the binder.

10 represents details of the wire mouthpiece.

11 represents details of the axial traction device.

12 Provides details of the wire spindle lock 36 The spindle lock can have two functions. One function is the wire completely fix. The function is triggered when the spindle lock is in a forward position with the wire locked between the spindle lock and the tying head. In accordance with another embodiment of the invention, another function may be provided whereby the wire is readily released at both ends of the wire by the wire-spindle lock. For the restraining force in the wire is by a suitable pressure between the wire spindle lock 36 and the tie head 44 taken care of, but the wire is not fully locked, so that it can slip, whereby an equal release is formed.

13 represents details of the wire lock.

14 presents details of the sliding platform.

Regarding 15 For example, the jaw base includes a guide 56a to guide the wire into the jaws and a guide 56b to guide the wire out of the jaws. The guides 56a and 56b are provided asymmetrically. fastener 57 are provided to secure opening and closing means of the jaws, such as springs, hydraulic, pneumatic or electric motors or actuators, etc.

Regarding 16 The cheeks include a guide 58 to guide the wire through the jaws and around the objects to be joined together. The jaws of the binding device may preferably be releasably attached so that the jaws can be easily renewed or so that jaws of a different dimension can be applied. Baking of a different dimension may be necessary depending on the dimension of the objects to be tied together. Preferably, the jaws 7 , the baking tray ba sis, the polar head 9 and the tie head 44 assembled into a unit which may be releasably attached to the binding device. By disassembling this unit, the user can gain access to clean the internal parts of the binder and the jaws. The jaw base, the polar head and the binding head can be easily renewed when worn, etc.

Regarding 17 In addition, the binding device may be provided with wire alignment means 59 be provided to unthread the wire before the wire penetrates into the binding housing.

18 represents a functional description of the control system.

19 Figure 5 illustrates another embodiment of the housing for the binding device. The wire spool is in this example located between the handle and the mechanisms of the binding device. The embodiment provides a long binding device configured to reach into limited spaces, etc.

20 represents an alternative embodiment of the invention, wherein the gripping means a clamped with a spring claw 61 include, which is pivotally mounted on the spindle lock. The spindle lock for this embodiment is denoted by the reference numeral 63 shown. When the free end of the wire passes the claw, the claw is lifted by the wire. Because the spring 62 the claw presses against the wire, the wire is locked in the reverse direction. When the wire goes through the case 14 the binding device is stopped, the voltage across the wire feed motor increases. When the increase of the voltage is detected, the wire feed is stopped and the feeding direction is reversed. If the wire is prevented from getting through the binding head 44 and the polar head (the twisting part) to move back, the wire is tensioned. As the polar head begins to rotate, the wire between the wire mouthpiece 25 and the tie head 44 cut. In order to achieve sufficient inertia in the motor axis to perform the cutting of the wire, the motor is allowed to rotate between 135 degrees and 200 degrees before the spindle lock 63 is rotated by the motor and thus before the wire is cut.

According to this embodiment, the pen 73 the spindle 49 used to arrange the polar head such that the wire mouthpiece is placed correctly in relation to the polar head, whereby the wire through the holes 53 can run. The pencil 73 may be associated with mechanical, magnetic or opto-electrical sensors or any other type of system capable of detecting the angular position of the pin and thus of the polar head.

21 represents the embodiment of the 20 after the wire has been tensioned. As shown, the spindle lock 63 pressed forward against the wire, and the wire is now between the spindle lock and the binding head 44 along the lines of action 65 fixed. When the spindle lock is pushed forward, the claw is released from its engagement with the wire.

Preferably, the jaws 7 , the jaw attachment base ( 15 ), the contact surfaces 64 , the polar head 9 , the tie head 44 and the camp 65 detachably connected to the binding device for easy repair and maintenance. It is preferred that all the aforementioned parts can be removed without the use of tools. For example, all the parts through the contact surfaces 64 be held in place.

22 represents a preferred embodiment of the contact surface. The contact surface is provided in the form of a circular disc, the contact surface therefore being in close proximity to the polar head 9 is arranged and therefore the binding device against the objects, which are to be tied together, secures.

23 represents details of the gripping means with the locking claw.

24 provides details of the spindle lock according to the in 20 illustrated embodiment of the gripping means.

25 provides an overview of the binding device with motor. 25 illustrates a binding device according to the embodiment of 20 as in 25 is shown, the binding device has a handle 66 and a shield 67 in order to protect the user of the binding device from a dangerous impact with the objects to be tied together. In addition, the binding device has a wire spool 68 , an ad 69 , a battery 70 , a control 71 and a wire feed motor 72 on.

26 represents two different states of the binding process. In the first operation, the wire has been spirally rotated around the objects to be tied together. In the second process, the binding head has been rotated and thus the wire has been locked with a binding force.

27 represents an embodiment of the locking claw 61 of the 20 Through their engagement with the binding head 44 the locking claw is held in the position shown with the claw locking the wire. As the tying head begins to rotate, the engagement between the tying head and the pawl is released, releasing the wire. At this moment, the wire gets through the spindle lock 63 held.

Preferably is the wire provided with a compliance or flexibility, so that a wound wire bends straight out, when he detached from the winding becomes. This ensures that the wire is the guide means the baking follows in firm contact with the cheeks. So that the wire on the wire spool does not unwind, the wire spool can be provided as a closed magazine. Inside the magazine is the wire with a diameter in the range of 50 mm to 100 mm or even more wound up. The wire is taken from the magazine e.g. taken through a small hole in the magazine. When the wire of When it is removed from the magazine, it automatically seeks to be straight Configuration.

Claims (27)

A method of twisting and tensioning a wire having a free end portion about at least two objects to connect the objects together, the method comprising: - placing the two objects in close contact, - placing a twisting part in a position near the objects, the twisting part having a surface opposite the objects, guiding the free end portion through a hole or recess in the twisting part, guiding the free end portion on a path at least once around the objects so as to form a wire portion in at least one loop around the Wrapping objects around, - passing the free end portion through or into the twist part, the wire forming a closed loop and defining an intersection of two wire sections so that the surface of the twist part is between the intersection and the objects, - gripping the end of fr tensioning the wire by pulling, rotating the twisting part so as to twist the wire, characterized in that the wire is cut by a cutting edge of the twisting part. Contraption ( 1 ) for twisting and tensioning a wire around two objects, comprising: - a twisting part ( 9 ) ( 44 ) with a surface opposite the objects ( 64 ), wherein the twisting part is mounted in such a way that the surface can touch the two objects or be in close contact with the two objects, - two jaws ( 7 ) configured to enclose the two objects, the jaws being disposed opposite and opposite each other in a looped configuration, each of the jaws having a free end portion and an end pivotally mounted in the vicinity of the twisting portion , - drive-powered means ( 17 ), a wire through a first hole ( 53 ) in the twisting part and along a guide means ( 56a . 58 ) in a first of the two jaws to the free end portion of this jaw and further to the free end portion of the second jaw and from there along ei guiding means ( 56b . 58 ) in the second jaw and on through a second hole ( 53 ) in the twisting part so that a portion of the wire is wound around the objects at least once; where the wire forms a loop and an overlap ( 28 ) defined by two wire sections, so that the surface of the twisting part is located between the intersection and the objects, - gripping means ( 36 . 61 ) for gripping a free end portion of the wire when the wire has been passed around the objects, - tensioning means ( 29 ) for tensioning the wire when gripped by the gripping means, - driving power driven means ( 12 ) for rotating the twisting member so as to twist two portions of the tensioned wire around each other, characterized in that the twisting member defines a cutting edge configured to cut the wire when the twisting member is rotated. Apparatus according to claim 2, wherein the jaws with a non-circular Form are provided. Apparatus according to claim 2 or 3, wherein the means to lead of the wire comprises an electrically driven motor. Apparatus according to any one of claims 2-4, wherein the means for rotating the twisting part comprises an electrically driven motor. Device according to one of claims 2 to 3 or 5, wherein the Means for guiding the wire comprises pneumatically driven means. Device according to one of claims 2-4 or 6, wherein the means for rotating the twisting part pneumatically driven means includes. Device according to one of claims 2-3 or 5 or 7, wherein the Means for guiding the wire comprises hydraulically powered means. Device according to one of claims 2-4 or 6 or 8, wherein the Means for rotating the twisting part hydraulically driven Comprises means. Device according to one of claims 2-11, wherein the same electrically driven motor is used for twisting and guiding. Device according to one of claims 2-3 or 6-7, wherein the same pneumatic driven motor is used for twisting and guiding. Device according to one of claims 2-3 or 8-9, wherein the same hydraulically driven motor is used for twisting and guiding. Device according to one of claims 2-12, wherein the gripping means a mechanical or electromechanical actuating means and wherein the mechanical or electromechanical actuation means is selected from a group comprising: - electromagnets, - hydraulic Actuators - pneumatic Actuators. Device according to one of claims 2-13, wherein the operation of the first and / or the second electrically, pneumatically or hydraulically driven motor is controlled by a control system. The device of claim 14, wherein the control system of means for electronic processing, e.g. a CPU becomes. The device of claim 15, further comprising a display comprising, which is connected to the CPU to the operator To present information. Apparatus according to claim 15 or 16, further a Interface for communication between the CPU and external processing means full. Device according to one of claims 15-17, wherein the means for electronic Processing are designed to the clamping force according to a Change operator selection. Device according to one of claims 2-18, wherein at least the part the twisting part, which faces the objects, from a hardened Steel alloy, such as Titanium alloys or similar metallic or ceramic materials. Device according to one of claims 2-19, wherein each of the free End portions of the jaws forms a funnel-shaped opening, which is from the contact between the free end portions of the two jaws extends away. Device according to one of claims 2-20, wherein the jaws by a spring is biased to a closed position. Device according to one of claims 2-20, wherein the jaws by closed hydraulically, pneumatically or electrically driven means become. Apparatus according to claim 22, wherein the closing by the hydraulic, pneumatic or electrically driven means is controlled by the CPU. Device according to one of claims 2-23, wherein a supporting support arm on the housing The device can be attached to the weight of the device to carry, so that the device at a distance from the hands of the Operator can be used. Device according to one of claims 2-24, further comprising a contact surface, to secure the device in front of the objects. Device according to one of claims 2-25, wherein the wire is a resilient Wire for joining an object, wherein the wire has an elasticity of at least 50,000 MPa. The device of claim 26, wherein the wire is made an iron alloy which is in the range of 1.2-2.0% Manganese (Mg), 0.8-1.2% Silicon (Si) and 0.06-0.15% Includes carbon (C).