Method and device for binding metal wires

Abstract

The present invention relates to a method for binding a metal wire around a first element (3) and a second element (4) having an elongated shape including a reinforcing bar, comprising the steps of: preparing a device for binding a metal wire (2) to the first element (3); supplying the wire (2) to a device (1) located next to the first element (3); bending the wire with a bending assembly; holding opposing portions of the wire with binding heads (20, 20'); and twisting and binding the wire (2) around a binding axis (A, A').

Description

Technology Field

[65535] The present invention relates to a method and apparatus for binding metal wires, etc. Background Technology Devices for binding metal wires are used, for example, in various technical fields to manufacture cages for reinforced concrete, metal reinforcing nets, protective nets, fences, etc. The most widely used devices are manual types, such as grippers. Basically, the operator prepares the metal wire around the part to be bound and extends each end of the wire to one side. After tightening the ends with a gripper, the gripper is rotated to twist both ends. This rotation can be semi-automatically controlled by a worm screw operated by the operator. Clearly, such manual devices are time-consuming to bind and costly due to the significant labor required. Furthermore, the results of manual binding, particularly the tension, depend heavily on the operator's skill and experience, and the repeatability of the results is not guaranteed. Recently, automatic devices for binding metal wires have been proposed, but they have not been easily used on construction sites because they require specialized, sophisticated equipment. The device of Patent EP0751270 allows the operator to grip the wire by bending it onto the reinforcing bar. This device comprises a feeder, a guide arm that guides a loop wire to the rebar, a twister that grasps the loop portion of the wire, twists and tightens it, a cutter that cuts the twist at the base portion of the wire, and a mechanism that feeds the starting end of a new wire to the device. Another solution is disclosed in patent EP1440746. This introduces a device for binding rebars, which feeds a wire along a ring guide through a feeder to form a binding ring and twists this ring to bind the rebars. This device includes fork-shaped members connected to a sleeve and an axis, and has a hook positioned forward relative to the direction of rotation to block the binding ring during the rotation of the axis to bind the rebars. However, binding methods known in the art do not meet the requirements of specific fields, particularly regarding precision, binding strength, cost, and flexibility of use. In particular, known methods are bulky or heavy, making it difficult to insert into or handle the rebar, and thus making it difficult to bind at the expected location.In some fields, there is dissatisfaction regarding the requirement to apply stable and uniformly tensile connections that comply with safety standards at every stage of work. In this regard, the technical construction sector requires that the elements to be joined be tightened to prevent movement. This result is achieved only when the connections are properly tensile and strengthened. In practice, concrete must be poured after the rebar is assembled. Particularly for floors, operators typically pour concrete onto the rebar and walk over it while using a pump. The material to be poured is in a paste form and is not suitable for self-leveling. At this stage, the weight of the operator and equipment is applied to the single connection, and to withstand this, the connection must be sufficiently strong and rigid. Specifically, strength is proportional to the transverse dimension of the wire used, and the tension level is determined by the tensile force exerted on the wire during the connection process. If the tension and / or strength are insufficient, the rebar elements may move, potentially losing the intended configuration. The movement of the rebar elements can locally compromise resistance variables, particularly the moments of inertia of the structural elements provided by the project, such as beams and floors. In addition, tensile strength and rigidity are important parameters when binding at the workplace and then transporting to the site. Manual binding known in the industry generally uses wires with a maximum diameter of 0.9 to 1 mm, so they may not be sufficiently strong. Meanwhile, conventional portable automatic devices use wires of a size similar to manual binding, or wires between 0.6 and 0.8 mm, and attempt to reinforce the binding part by repeatedly winding the same wire around the binding element; however, in this case, uniformity of wire tension is not guaranteed for each winding. Finally, known automatic devices generally use specially manufactured metal wire reels, so they are of a special type and cannot be recharged, making them expensive. *Patents EP 0757143 and US 5,842,506 introduce other automatic devices for binding metal wires. The problem to be solved The object of the present invention is to provide a method and apparatus for binding metal wires that enables strong and effective binding, thereby solving the problems of the past. Another object of the present invention is to provide a metal wire binding apparatus that is not only relatively inexpensive but also ensures safe and reliable use, and has a simple configuration and functional concept. Yet another object of the present invention is to provide a metal wire binding apparatus that is highly flexible and can be easily applied to materials with different cross-sectional areas. Yet another object of the present invention is to provide an apparatus that performs repeatable binding in a robust, effective, and reliable manner. means of solving the problem These objectives of the present invention are achieved by the metal wire binding method and apparatus of the independent claims. The method of the present invention for binding a metal wire around a first element and a second element having an elongated shape including a reinforcing bar provides an apparatus for binding the wire to the first element. The device comprises a main body for receiving a wire being unwound, a bending assembly fixed to the front of the main body and arranged around a longitudinal binding axis to guide the wire while winding the wire to a first element and / or a second element in an internal bending operating space, a binding head attached to the main body along the binding axis, a cutter for cutting the wire, and an operating member for rotating the binding head around the binding axis, wherein the binding head is inside the bending assembly and twists the branches of the wire together around the binding axis, and the binding head has a first operating member and a second operating member, wherein the first operating member has a plurality of fingers, the fingers being spaced apart at an angle around the binding axis, and a first passage and a second passage for the wire to be wound are formed between the fingers, and the second operating member has a plurality of separating elements inserted axially around the first operating member and spaced apart at an angle around the same binding axis, and a first space and a second space for the wire to be wound to pass through the separating elements It is formed in between. The first operating member and the second operating member can move in relative rotation and / or translational motion around or along the binding axis between the open position and the holding position, and in the open position, the first passage and the second passage, and the first space and the second space are each arranged to face each other in a transverse direction with respect to the binding axis so as to pass a wire between them, and in the holding position, the first passage and the second passage, and the first space and the second space move, rotate, or translate relative to each other, and as a result of such relative motion, the opposing parts of the wire are held.The method subsequently comprises the step of feeding a wire to a device that has moved the wire near a first element by means of a drawer connected to the device, and guiding the wire end through a first passage and a first space that are partially opposite each other in an open position. The method subsequently provides the step of bending the fed wire and winding the wire annularly around a first element and / or a second element by means of a bending assembly. At this time, the end of the wire passes through the second passage and the second space facing each other in the open position. Before or after the step of supplying the wire, the method provides a step of operating the first and second operating members of the binding head by relative motion with respect to the binding axis to align the binding head from the open position to the holding position, and simultaneously or subsequently, holding the opposing portions of the wire. Simultaneously or subsequently, the method provides a step of moving the movable knife of a cutter having a fixed knife and a movable knife together with the binding head to cut the wire at each portion arranged upstream of the first passage and the first space in the wire supply direction to the binding head. The method further provides a step of rotating the binding head arranged in the fixed position around the binding axis by the operating member to bind the wire wound and held in the opposing portions. The first passage and the first space, and the second passage and the second space may form a first opening into which the wire enters and a second opening into which the wound wire flows backward. The first operating member and the second operating member By operating alternately in translational motion along a binding axis, in the motion stroke, this method first holds one of the opposing portions, which is one end of the supplied wire, cuts the remainder of the opposing portions of the wire, and reverses the wire to the wire drawer to tighten the wire winding around the first element and / or the second element. After cutting the wire, the opposing portions of the wire can be bent for each support protruding from the finger of the first operating member in this method.Additionally, when rotating relative to the binding axis, the first operating member and the second operating member of the binding head are operated alternately, and the holding part protruding horizontally from the separating element of the second operating member is moved close to the finger of the first operating member, thereby closing the open sides of the first opening and the second opening toward the bending operating space to confine the opposing parts of the wire inside. The term “facing” means that at least a portion of the passages and spaces are aligned laterally or radially in the open position. In particular, when the passages and spaces partially overlap at least one place, a first passage opening for the first part of the wire and a second passage opening for the second backflow part of the wire opposite the first part of the wire are formed. In the open position and the holding position, the first opening and the second opening may approach the binding axis laterally to allow the opposing parts of the wire to pass through. The first opening and the second opening face the binding axis or are close to the circumference of the binding axis. Also, this method During or before the step of rotating the binding head, the method may further include the step of bending the opposing portions of the wire held in the binding head within the first and second openings against the operating surfaces and / or butt surfaces of the first operating member and / or the second operating member. The step of bending both ends of the wire means bending both ends against the operating surfaces and / or butt surfaces in a direction transverse to or parallel to the binding axis. In the step of holding the opposing portions of the wire in the first and second openings, the sliding of the bent opposing portions of the wire is reduced by frictional force on the operating surfaces and / or butt surfaces of the first operating member and / or the second operating member. This sliding is intended to offset at least some of the wear of the wire wound on the first element and / or the second element, which arises from the gradual twisting of the wire around the binding axis. The above frictional action hinders the sliding of the wire, and causes the first and second elements to be tightened against the binding device through binding tension during twisting.This method provides a step of cutting a wire by rotating the movable knife of a cutter around the binding axis.* This method provides a step of rotating the movable knife with an operating member integral with the binding head. Meanwhile, this method may also cut the wire by operating the movable knife in a longitudinal translational motion relative to the device. The movable knife is composed of a second operating member, and the edge of the space is a cutting blade. This method provides a step of supplying a wire by passing the wire through a wire drawer into a conduit inside the main body, and this conduit has at least one rigid portion, and this portion has a shape that deforms the wire accordingly. This method deforms the supplied wire according to the curvature of the rigid portion. To prepare the binding head from the holding position to the opening position, for example, to release the finished binding portion or the remaining portion or to supply the wire, the method rotates the binding head from the holding position in a first rotational direction around the binding axis, pulls out the second operating member and the first operating member together, then rotates the binding head in the opposite direction to hook the second operating member onto the main body of the device, and then further rotates the binding head in the same opposite direction to align the opening shape of the first opening and the second opening, while fixing the second operating member to the main body. The method provides a step of arranging the first and second operating members to release the completed binding and to cause relative rotation between the first and second operating members around the binding axis. The relative rotation is controlled by a cam mechanism disposed between the first and second operating members. In the step of binding the wire, the method comprises a binding portion having a portion wound around a first element and / or a second element, and a wire around the binding axis A twisted section is formed by twisting the two branches. At the end of the binding cycle, the twisted section breaks and separates from the wire residue, and the wire residue is held in the binding head and discharged as waste. Following the above step of forming the binding section, a step of realigning the binding head to an open position to discharge the residue may follow.This method introduces an end of a wire along an input track between a bending roller supported by a bending assembly and an input track for bending the wire, and then guides the end of the wire along a counter-track likewise attached to the bending assembly, and the input track and the counter-track are curved at least partially for this purpose. Preferably, the wire is thrown between the input track and the counter-track, where "thrown" means that the wire is free with respect to the middle portion between the two tracks. The thrown wire is guided on a second track through a front portion having a guide shape, preferably at least partially conical or funnel-shaped. This method arranges the device to align a first element with an intersection area with a second element. In this case, a wire and another wire are fed into the device, and the wire and the other wire are each guided along a winding path formed through separate input and reverse tracks held in a bending assembly around a first element and / or a second element, the wire and the other wire are sheared by a cutter, and the opposing portions of the wire and the other wire are each held, and the cutting head is positioned in the holding position and finally the binding head is rotated around the binding axis to twist the four opposing branches of the wire and the other wire while rotating around the binding axis, thereby creating a double binding around the first element and the second element. This method is applied to binding the first and second elements that intersect in an intersecting overlapping area. All planes perpendicular to the binding axis are divided into four quadrants by the axis projection of the first and second elements in the same plane in this case. In this method, a wire and another wire can be wound along the intersecting winding path around the first and second elements, and then double cross-bind to the first and second elements. Specifically, there is a tightening step in which the first and second elements must be tightened and bound with the wire and another wire, and a step of arranging the opposing elements so that they can be twisted.In a bond formed in this manner, four ends of two wires and two of another wires are gathered at a single twist of the wire and another wire. At the same time, the wound portion of the wire and the wound portion of the other wire intersect. Also, in the same manner, the wire and the other wire are guided along their respective winding paths to form a parallel double bond, but when the device is arranged in a butt configuration, the four branches of the wire and the other wire can be twisted by the overlapping or intersecting portions around the element far from the bonding head between the first element and the second element, and separated almost parallelly. In a bond formed in this manner, four ends of two wires and two of another wires are gathered at a single twist of the wire and the other wire. At the same time, the winding of the wire and the winding of the other wire are almost parallel. Also, so that the device contacts the first element, the bending assembly is moved along the longitudinal axis of the device near the first element and the second element, and grooves are formed in front of the bending assembly that contacts the first element. With this longitudinal displacement made possible by the alignment of the bending assembly, it is possible to easily reach and connect elements at any position, even those inconveniently placed for the operator. In particular, the wire is thrown freely between the input track and the backflow track, allowing access to the front area of ​​the bending assembly, which is useful for movement near all types of elements or for overlapping elements to be connected. The step of bringing the device into contact with the first element proceeds to the step of orienting the device and / or the step of adjusting the longitudinal height of the groove. In the initial stage of connection, when the wire is tightened around the first element and / or the second element, opposing branches of the wire in contact with the first or second element intersect to form a connection angle, the connection angle being a function of the total dimensions of the elements to be connected and the distance between the connection head and the elements, and the connection angle is 70° to 135°, preferably 90° to 110°. The distance is up to 22 mm, preferably 18 mm.In the binding step, the remaining portion may be separated from the twisted portion by self-cutting of the twisted portion by twisting at an optimal position for strength and height. The device of the present invention for binding a metal wire around a first element and a second element having an elongated shape including a reinforcing bar comprises: a main body for receiving a wire being unwound; a bending assembly fixed to the front of the main body and arranged around a longitudinal binding axis to guide the wire while winding the wire onto the first element and / or the second element in an internal bending operating space; and a binding head attached to the main body along the binding axis; A binding head is located within a bending assembly and twists the branches of a wire together around a binding axis; the binding head has a first operating member and a second operating member, and the first operating member has a plurality of fingers, which are spaced apart at an angle around the binding axis, forming a first passage and a second passage for the wire to be wound between the fingers; the second operating member has a plurality of separating elements inserted axially around the first operating member and spaced apart at an angle around the same binding axis, forming a first space and a second space for the wire to be wound to pass through between the separating elements; the first operating member and the second operating member can move by relative rotation and / or translational motion around or along the binding axis between an open position and a holding position; in the open position, the first passage and the second passage, and the first space and the second space, are respectively arranged to face each other transversely to the binding axis to pass the wire through; and in the holding position The first passage and the second passage, and the first space and the second space move, rotate, or translate relative to each other, and as a result of this relative motion, the aforementioned opposing parts of the wire are held. The device may further include a cutter for cutting the wire and an operating member for rotating a binding head around a binding axis. The cutter has a fixed knife and a movable knife, and the movable knife can move together with the binding head.Additionally, each of the fingers of the first operating member forms a protruding support, and such protruding support cooperates with each edge defining the first space and the second space of the second operating member, and the edge can bend the end of the wire relative to the support as a result of the relative translational movement. Due to the effect of this bending, the binding portion becomes compact and the residual portions of wire that need to be removed are eliminated. The first passage and the second passage may have open sides facing the bending space. Additionally, these open sides may be closed by relative rotational movement in which a holding member protruding from the separating element of the second operating member moves toward the finger. In short, each separating element forms an edge-shaped holding portion protruding radially from its respective free end, and the free end is shaped to close the open structure of each passage when it moves toward each finger of the first operating member, particularly due to the relative rotation, and thus closes each opening in the holding position. This device may be used with a separate unit that is fixed, suspended, wheeled, shoulder- or belt-carried, and accommodates a reel of metal wire. Such a unit may include at least one drawer that supplies wire unwound from the reel toward the device, a connecting means that guides the wire, and a power source for the device. The first operating member and the second operating member can form a first opening and a second opening of variable width between the open position and the holding position by moving with relative rotational motion around the binding axis. In the open position, the first opening and the second opening are open toward the bending operating space to allow opposing branches of the wire to pass through, and in the holding position, the first opening and the second opening are almost closed to hold opposing parts of the wire. In fact, in the holding position, the wire is passed transversely along the binding axis to prevent the wire from coming out from the inside toward the opening side of each compartment. Therefore, the holding member prevents the wire from exiting.In this case, the holding portion is curved and has a shape that bends the wire against the fingers of the first operating member while guiding the wire around it during the rotation of the binding head during the binding stage. The first operating member and the second operating member move relative to each other between the open position and the holding position, and it is preferable that they be installed to slide radially and / or axially around the binding axis. These features of the present invention may also be applied to other types of binding devices. A cutter may have a fixed knife and a movable knife, and the movable knife may move together with the binding head. The fixed knife is a sleeve fixed to a main body having an opening for inserting a wire, and the movable knife is a cutting blade shape defining a first space of the second operating member, and the second operating member is inserted coaxially into the fixed knife, and the wire may be cut as the cutting blade slides beyond the opening in the direction of the binding axis through relative translational motion. The fixed knife may be integral with the main body of the device. Each of the fixed knife and the movable knife has a hole or slot for inserting a wire, and these extend from the main body to the binding head It is arranged along the path that supplies the wire. In this way, the wire can be simply cut by the relative rotation between the binding head, which acts as an operating member, and the main body. Subsequently, the wire is twisted by the same rotational motion, even without a seam. This feature is distinct from the remaining technical features mentioned above and can be applied to other types of binding devices in particular. Meanwhile, a movable knife may be installed to slide axially around the first operating member of the binding head to cut the supplied binding wire. This feature can be applied to other types of binding devices. A bending assembly may be inserted axially around the binding head and may have a path for bending the wire inside. The bending path is formed by an input track and a counter-flow track facing each other with respect to the binding axis, so that the winding portion of the wire passes through the first opening and each end flows back through the second opening.The bending path is connected to at least one bending roller, for example, can be connected cantilevered at the beginning of the input track to guide the wire. The input track and the backflow track are preferably made of steel inserts applied to the bending assembly. The bending assembly forms a pair of intersecting or parallel forks for each wire, each intersecting or parallel to many winding paths. The backflow track preferably forms a guide section, such as a cone, at the inlet portion to guide the insertion of each thrown wire from the input track. The input track and / or backflow track form grooves at least partially, and these grooves guide the wire during winding around the first element and / or second element when there is gradual tightening. The main body has a conduit for guiding the wire. This conduit has a curved rigid section, which deforms like the wire and eliminates all existing distortion. The main body may form at least one externally protruding wire guide shell, and the rigid section inside it guides the wire. The wire guide shell is preferably in the shape of a fin. The main body has a pair of wire guide shells spaced apart, for example, by about 90° around the binding axis. Between the two wire guide shells, a handle protrudes horizontally from the main body at a right angle to the binding axis. The arrangement of the handles allows the device to be held like a gun. The inside of the conduit forms a wire path, which extends from a beginning section longitudinal to the binding axis to a final section perpendicular to the binding axis, with the middle section having a curvature for pre-bending the wire entering the binding head. Brief explanation of the drawing FIGS. 1a and 1b are perspective views of a device according to the present invention, arranged in the respective overlapping portions of the elements to be connected. FIG. 1c is a perspective view of the same device seen from a different angle without the elements to be connected. FIGS. 2a and 2b are a perspective view and a side view of the same device associated with a separate supply unit, respectively. FIG. 2c is a side view of a different embodiment of the device associated with a different separate unit. FIG. 3 is a side view of the same device. FIG. 4 is a cross-sectional view along line IV-IV shown in FIG. 3 of the device according to the present invention. FIG. 5 is a plan view of the same device seen from below. FIG. 6 is a cross-sectional view along line VI-VI of FIG. 5. FIG. 7 is an enlarged view of FIG. 6. FIG. 8 is an exploded view of the device according to the present invention. FIG. 9a, 9b, and 9c are perspective views of the assembled state of FIG. 8 seen from various angles. FIG. 10a and 10b are perspective views of the main body of the device according to the present invention without a cover casing, seen from different angles. FIG. 11a, 11b and 11c are a perspective view, a side view, and a top view of a bending assembly. FIG. 12 is a partially cutaway perspective view of the same bending assembly. FIG. 13 is a side view of a device according to the present invention. FIG. 14 and 15 are perspective views showing a cross-section of the XIV-XIV plane of FIG. 13, respectively. FIG. 16 is an enlarged view of FIG. 15. FIG.S. 17a, 17b, and 17c are a perspective view, a plan view, and a side view of the same binding head. FIG.S. 18a, 18b, and 18c and FIG.S. 19a, 19b, and 19c are the same drawings of FIG.S. 17a, 17b, and 17c, respectively. FIG.S. 20 through 23 are perspective views of the device in the operating stage for shearing the metal binding material, respectively. FIG.S. 24a and 24b respectively show partial cross-sectional perspective views of a detailed part of the device according to the present invention, with or without a bending assembly and an element to be bound. FIG.S. 25a and 25b are the same drawings of FIG.S. 24a and 24b in the open position of the binding head. FIG.S. 26 and 27 show wires being wound around the elements to be bound. FIG. 28 shows a pair of elements to be bound and a binding head in the final binding stage. This is a perspective drawing.FIGS. 29a and 29b are perspective views of a wire portion separated from a pair of elements to be connected. FIGS. 30a and 30b are perspective views of the connected portion and the separated connected portion, respectively. FIGS. 31, 32, and 33 are perspective views of a bending assembly used in a device according to the present invention located on different types of elements to be connected, respectively. FIGS. 34, 35, 36, and 37 are detailed cross-sectional views showing various stages of the joining process of a first element and a second element. FIG. 38 is a detailed enlarged cross-sectional view. FIGS. 39 and 40 are schematic side views of a separate unit for supplying wire to the device according to the present invention at various operating stages. FIG. 41 is a perspective view of a second embodiment of the device according to the present invention. FIGS. 42a, 42b, and 42c are perspective views of components of the device shown in FIG. 41, respectively. FIGS. 43a and 43b are each at the operating stage of supplying wire, FIG These are a front view and a perspective view of the device illustrated in 41. FIGS. 44 and 45 are side views of a cross-section along the central longitudinal plane of the device illustrated in FIGS. 41, respectively, at a subsequent cutting stage. FIGS. 46, 47, and 48 are perspective views of other embodiments of the device according to the present invention and components of a binding part obtained in a corresponding manner at intermediate and final stages of operation, respectively. FIGS. 49 and 50 are perspective and side views of additional embodiments of the device according to the present invention, respectively. FIG. 51 is a cross-sectional view along the LI-LI plane of FIG. 50. FIG. 52 is a binding part formed by the device illustrated in FIGS. 49-51. FIGS. 53, 54, and 55 are cross-sectional perspective and exploded views along the axial plane of the binding head used in the device illustrated in FIGS. 49 to 51, respectively. FIGS. 56 and 57 show a perspective and cross-sectional view along the axial plane of a detailed part of the binding head illustrated in FIG. 53. FIGS. 58 and 59 are FIGS. This is a perspective view from a different angle of additional details used in the binding head shown in Fig. 51. Figs. 60, 61, and 62 are bending assemblies used in the device shown in Fig. 49, respectively. Fig. 63 is a side view of the binding head shown in Fig. 53.FIGS. 63a–b are cross-sectional views of the binding head of the LXIIIA–LXIIIA and LXIIIB–LXIIIB planes of FIG. 63 when in the first operating stage where only one wire is visible. FIGS. 64, 64a–b, 65, 65a–b, 66, 66a–b, 67, 67a–b, 68, 68a–b, 69, 69a–b, 70, and 70a–b are drawings such as 63 and 63a–b in subsequent operating stages, respectively. FIG. 71 is a drawing of the same section as the section shown in FIG. 70a of the binding part released from the same binding head. Specific details for implementing the invention In the device of FIG. 1, a metal wire (2) is wound around a first element (3) and a second element (4) that have a long shape like a reinforcing bar (see FIG. 1b). This device can also be used for other purposes, such as attaching an identification tag to a deformable material, such as the end of a bag, or simply sealing a single element. The device (1) according to the present invention is suitable for making all types of binding, such as simple, double, cross, and parallel, by twisting a material such as a wire around a binding axis (A) (see FIG. 4). Hereinafter, the term wire (2) should be understood to include a pair of wires (2) for double cross or parallel binding, a single wire (2), and other wires (2) as described below. The opposite is also true. Therefore, this device (1) can bind and combine the first element (3) and, preferably, the second element (4) in areas where they overlap or intersect. The first element (3) and the second element (4) that are bound and combined may include longitudinal metal elements that are bound at intersections or overlaps, or transverse metal elements that are bound at intersections, for example, to make a wire mesh or metal cage for reinforcing bars of a building structure for fences or other purposes. The elements to be bound include longitudinal elements, such as reinforcing bars used in reinforced concrete buildings, and transverse elements, such as reinforcing brackets. In particular, the transverse elements may be flat or curved, single or double. More precisely, for example, the transverse elements of a reinforcing cage are generally self-bent brackets, and are reinforced by being bound to longitudinal elements, such as reinforcing bars, with each end overlapping and placed side by side. In a reinforcing cage, longitudinal reinforcing elements intersect cross brackets, which are transverse elements, from both sides, flattening the intersections and determining three-dimensional intersections across their edges in curved sections. The transverse dimensions of the elements to be connected, particularly the diameters, are wide, as is known in the art."Binding" means winding both branch lines (2') of the wire (2) around the first element (3) and / or the second element (4) spirally along the binding axis (A) until the overlapping portion of the two elements to be combined is tightly wound (see FIG. 28). The wire (2) can be unwound from the reel (5) using a special unwinding means. An annealed metal wire with particularly emphasized formability for binding is preferred for the wire (2). The equipment according to the present invention can use most wires commonly available on the market. For example, one or more, preferably a pair of reels (5), can be placed in a separate unit (6) away from the device (1) (see FIG. 2a–b). The separate unit (6) is used to provide a different type of binding device than the device of the present invention, thereby reducing the weight of the device and supplying wires that are significantly large in width or are difficult to store in the device due to their size and weight. The separate unit (6) may be equipped with wheels or tracks to allow for easy movement near the place of use, or may be carried on the shoulder or belt like a backpack. A puller (7) may also be placed in the separate unit (6) as a means of unwinding each reel (5). The puller (7) may be connected to a straightener (7a) of the wire (2) unwound from the reel (5). A controller that not only supplies electricity to the device (1) via a battery but also coordinates the transport movements of the wire (2) may also be in the separate unit (6). More precisely, the controller (8) controls the driving means of the drawer (7) as well as the driving means placed inside the device (1). A flexible tubular connecting means (9) in the form of an outer shell may be provided for electrical connection from a separate unit (6) to the device (1) and for transporting the wire (2). The tubular connecting means (9) may accommodate, for example, a sheath (90) for passing a metal wire (2), a power and control cable (91) for operating the device (1), and an electrical signal cable (92) for sending a necessary electrical signal to the control means of the device (1), which will be described later (see FIG. 3).In particular, this connecting means (9) is a flexible tube-like structure that can be supported by an arm (93) attached to a separate unit (6) and rise. A housing guide (94) for fitting the tube-like connecting means (9) is attached to the top of the arm (93), allowing the connecting means to be arranged along a curved path. A rigid tubular connecting means (9a) may also be additionally used to guide the wire (2) from the reel (5) to a drawing means or a straightener. According to another embodiment of FIG. 2c, a separate unit (6') may be provided at the top of the arm (93') to accommodate a drawing machine (7). This allows the connecting means (9') to be shortened by maximizing the drawing force so that the connecting device operates better and can be positioned further away from the separate unit (6'). The separate unit of FIG. 2c is connected to another embodiment of the device (1') described later, but can be connected to any binding device. The separate unit (6, 6') is equipped with a wire (2) backflow prevention device (60) (see FIG. 39–40), and such a backflow prevention device prevents the wire (2) from being pulled back by the drawer (7) and rewound disorderly onto the reel (5) during operation. In particular, it may be a problem for the wire (2) to turn in the opposite direction (R) when the reel (5) is almost empty or is supplied in the normal direction (S) and gradually emptied. In fact, there is a risk that the wire (2) rewound onto the reel (5) during the backflow stage may become tangled due to some free rotation of the reel (5). The backflow prevention device (60) prevents the wire (2) that has already been unwound from being rewound onto the reel (5). In particular, thanks to the backflow prevention device (60), the wire (2) completes an alternative path in an S shape through the inside of the guide means (61), and the guide means can alternately move between the normal configuration (61a) and the backflow configuration (61b). At least a portion of the guide means (61) is made of a return spring, and the wire (2) is guided through this return spring. The wire (2) backflow prevention device (60) can be connected to an insertion means (62) into which the wire (2) coming out of the reel (5) enters for proper guidance.In particular, to prevent the wire (2) from flowing back disorderly in the reel during the reverse phase, in the normal configuration (61a), the reel extends straight toward the insertion means (62) located between the reel (5) and the reverse prevention device (60), and in the reverse configuration (61b), the wire hangs like a loop outside the reel (5). Accordingly, the guiding means (61) is arranged in the normal configuration (61a) when the wire (2) is supplied in the normal direction (S) and in the reverse configuration (61b) when the wire is pulled backward in the reverse direction (R) (Figs. 39–40). Separate units (6, 6') may be equipped with a portable power source, such as a battery, to supply power to the device. This is particularly useful when carrying a separate unit (6) on the shoulder or belt. The device (1) may be portable, lightweight, compact, and easy for the operator to operate (see FIG. 1a–c). The device (1) may be installed in a metal cage manufacturing device or a metal mesh manufacturing device and an automation device, or installed on a robot arm instead of an operator. The device (1) includes a main body (10) that can be grasped by an operator, a binding head (20) connected to the main body (10) and rotating around a binding axis (A), and a bending assembly (30) that cooperates with the binding head (20) to wind and combine at least one wire (2) around a first element (3) and / or a second element (4) (Fig. 3–4). The bending assembly (30) can provide a support function to adjust the reference of the device (1) to the elements (3, 4) to be bound, thereby winding the wires (2) at the correct position. In particular, such support helps determine the correct binding angle (β) as described below. This device (1) further includes a cutter (40) to cut the supplied wire (2) (Fig. 15). The main body (10) has a handle (11) that is easy for the operator to grip, and a control member (12) which is a lever or trigger to operate the binding cycle, which will be described below. Meanwhile, the control member may automatically operate the binding cycle for the elements (3, 4) to be bound, for example, when the device is stopped, by means of contact or proximity sensors.More precisely, it is preferable for the control member (12) to operate both the binding cycle and the unbinding cycle. The binding cycle includes the supply, bending, cutting, and binding of the wire (2), and the unbinding cycle includes the discharge of wire (2) fragments remaining in the binding head (20) and the realignment of the binding head (20) to its initial position, which will be described later. The main body (10) is positioned vertically along the binding axis (A) to optimize the horizontal dimensions of the device (1), making it easy to insert forward even when it is difficult to access the working position, and is also useful when the device is mounted on a machine. The main body (10) may have a different shape as long as the operator can work in an ergonomic posture optimal for the intended use, which will be described later. The main body (10) has an operating member (13), such as a gear motor, and the operating member of the device (1) rotates to initiate binding steps by operating the control member (12). The operating member (13) controls clockwise and counterclockwise rotation to activate all movements of the binding head (20) and the cutter (40). The operating member (13) is equipped with means for detecting an angle position, such as an electrical converter like an absolute encoder, or a mechanical converter like a stop system and / or interlocking means, to adjust the precise angle position of the relative moving parts, which will be described later. The main body (10) further includes a connecting part (14) for connecting to the binding head (20) and the bending assembly (30) (Figs. 10a–b). This connecting part (14) is a bending The means (15) for attaching to the assembly (30), preferably a quick coupling type attachment means (Figs. 10a–b). This attachment means (15) allows for quick intervention in the device (1) in the event of a jam, for example, and allows for quick replacement of the bending assembly (30) in particular when the size of the elements (3, 4) does not fall within the gap covered by the assembled unit, or when the binding method must be changed during double crossing or parallel crossing. The main body (10) also has a conduit (16) for guiding the wire (2) unwound from the reel (5) (see Fig. 7).In the example, there is a pair of conduits (16) in the main body (10) for double binding of the first and second wires (2). A terminal, which is at least one rigid part (16a) in each conduit (16), correctly guides the wires coming out of the terminal part of the main body (10) toward the binding head (20) to the opposite end. These conduits (16) are oriented inside the main body (10) with a variable inclination from the longitudinal input direction to the inclined output direction, preferably with an inclination of about 30° with respect to the binding axis (A), so that they are correctly inserted into the binding head (20) and the bending assembly (30). The rigid part (16a) of the conduit (16) is preferably a final curved shape. Such a curved shape is particularly useful when an annealed material wire (2) is used. In fact, this type of wire (2) is characterized by high-capacity inelastic deformation and can easily take on a shape applied by the curvature of the terminal portion (16a). Due to the influence of the terminal portion (16a), a "memory deletion" effect occurs in the wire (2) as it passes through the flexible connecting means (9), so that the wire is accurately guided to the binding head (20) in both direction and spatial arrangement. Therefore, due to the shape of the terminal portion (16a) of the channel (16), the wire (2) can be pulled out in the same way regardless of its position within the space by the device (1) and the connecting means (9). Also, the terminal portion (16a) can play an important role in the rearrangement stage of the wire (2) after the binding cycle. More precisely, when the operator moves the device (1) to accurately position it according to the elements (3, 4) to be bound, the wire (2) portion inside the deformed portions of the conduit (16) is deformed according to the terminal portion (16a). Therefore, to eliminate this deformation, it is sufficient to pull the wire (2) backward from the upstream end of the terminal portion (16a) of the conduit (16). It is preferable that at least a portion of the conduit (16) be inside the handle (11) and gradually slope toward the binding head (20) from the inlet to the outlet of the main body (10).Each conduit (16) preferably enters into an inlet (17) arranged in the connection part (14), preferably inclined appropriately with respect to the longitudinal axis of the device (1) which coincides with the binding axis (A), and into an inlet corresponding to the terminal part (16a). In the illustrated case, a pair of inlets (17) in the connection part (14) are inclined with respect to the binding axis (A) at a 90-degree angle apart and guide the supplied wire (2) (Figs. 7 and 10b). Also, a rearrangement mechanism (18) for rearranging the binding head (20) at the start of a new binding cycle is located on the side facing the binding head (20) in use of the same connection part (14) (Fig. 17a). The rearrangement mechanism (18) functions to hold the binding head (20) in a holding position by the opposite action of an elastic means in an open position. Through this, the start of the binding cycle can be prepared, and the wire piece (2) remaining on the binding head (20) at the end of the binding cycle can be released. When the binding head (20) is rotated to an advanced angle position relative to the initial reference position, a rearrangement operation occurs. As described above, the rearrangement mechanism (18) may be connected to an electrical / mechanical means for detecting an angular position. More precisely, the rearrangement mechanism (18) is composed of a lever connected to the connecting part (14) opposite to an elastic spring, and this lever has a shape and arrangement that engages with each of the coupling cavities (19) in the binding head (20), which will be described later (Fig. 8). The binding head (20) is mounted coaxially with the bending assembly (30) in front of the main body (10), and it is particularly preferable to be inserted inside the bending assembly (30). The support member (21) of the binding head (20) supports a key (22), and this key is preferably in the form of a tang for attachment to the operating member (13). There is a channel (23) through which the supply wire (2) passes in the support member (21), and this channel starts from each inlet (17), passes through the cutter (40), and on the opposite side as described later. It extends to the end (see Fig. 14). Here, there are two channels (23) that form an angle.Preferably, each channel (23) extends into the support member by being inclined along the longitudinal axis of the support member (21) that coincides with the binding axis (A). Basically, this channel (23) is inclined from the inlet (17) to ensure accurate insertion of the wire (2) into the binding head (20) and the bending assembly (30). At the opposite end, the binding head (20) has a first operating member (24) (see FIG. 14) and a second operating member (25) (see FIG. 17a), which together pick up the wire (2) and wrap it around the binding axis (A). More precisely, a plurality of fingers (26) of the first operating member (24) are spaced apart at an angle around the binding axis (A). To slide a wire (2) between adjacent fingers (26), the fingers (26) are extended nearly longitudinally and their cross-sectional area decreases toward the binding axis (A). In an embodiment, four fingers (26) are provided at an angle around the binding axis (A) to form a double binding by winding a pair of wires (2) across the overlapping or intersecting parts of the first element (3) and the second element (4) (Figs. 26–27). Each finger (26) has at least one working surface (27), preferably on the side, and more preferably on opposite sides, with increased frictional force. For example, a working surface (27) with knurling or a knurling coating can be formed on at least a portion of the side of each finger or on the opposing side to firmly engage the wire (2), which will be described later (Figs. 8, 14). In particular, when the binding head (20) rotates around the binding axis (A), the fingers (26) act as binding members for the wire (2). At this stage, the rotation of the binding head (20) causes the two portions of the wire (2) to bend, because these portions are caught in the holes (20a~b) formed in the binding head (20), which will be described later (see Fig. 19b). This bending maintains the same portions of the wire (2) together with the firm engagement of the fingers (26), preferably with the friction of the working surface (27).The bending of each part, particularly the ends of the wire (2), blocks the limited frictional sliding of the wire (2), allowing the formation of a twist (101) in a binding, which compensates for the gradual backflow of the wire (2). In particular, this frictional sliding prevents premature rupture of the twist (101) of the wire (2), and instead makes this part effective and rigid by allowing the twist to unravel only at the desired binding tension. Accordingly, the fingers (26) are spaced apart at an angle to form at least a first passage (28a) and a second passage (28b) between the fingers to allow the first and last ends of each wire (2) to pass through (Fig. 19b). The first passage (28a) and the second passage (28b) are open on at least one side, particularly toward the working space for bending, to form each open profile. In other words, the first operating member (24) forms opposing and / or adjacent first passages (28a) and second passages (28b) around the binding axis suitable for the passage of the first branch (2a) and the adjacent second branch (2b) of the wire (2), and these branches are bent in a ring around the first element (3) and / or second element (4) by the bending assembly (30), as described later (see FIG. 7). In particular, the passages (28a, 28b) suitable for engaging the wire (2) on the working surface (27) are opened downward toward the opposite end of the key (22) when in use, for example, to enable extraction of the device (1) at the end of the binding cycle. The second operating member (25) works in cooperation with the first operating member (24) to close the passages (28a, 28b) to hold the wire (2). In practice, with this cooperation The passage (28a, 28b) is closed so that at least part of it cannot be accessed, thereby preventing the wire (2) from coming out in front of the binding head (20) in particular along the axial direction of the device (1), which will be described later.More precisely, the second operating member (25) forms a ring (51), and a plurality of separating elements (52) extend longitudinally from the ring (51) and are spaced apart at an angle corresponding to the number of fingers (26) around the binding axis (A) (see FIG. 8). Spaces (53a, 53b) are formed between the separating elements (52) as wide as passages (28a, 28b). Like the passages (28a, 28b), these spaces (53a, 53b) are also open in front of the binding head (20) toward the bending space, and are open from the opposite side of the connection part (14), for example, when the device (1) is inserted vertically downward at the overlapping or intersection of the elements (3, 4) (see FIG. 8, 19b). The holding part (54) attached to the separating element (52) protrudes horizontally in a ring shape and is used to close the opening, particularly the bending space in front of the binding head (20), and this bending space is axially aligned with the passages (28a~b) in the holding state, and the holding part holds the wire while approaching the fingers (26) and twisting the wire (2). Meanwhile, when the binding head (20) is in the open position, as described below, the same holding part (54) is separated from the finger (26) so that binding residue that may be present in the binding head (20) at the end of binding can be discharged, allowing free access to each side, for example, from the bottom, through passages (28a~b). The second operating member (25) is rotatably mounted around the first operating member (24) through an elastic means (55), such as a torsion spring. The elastic means (55) is arranged to maintain the second operating member (25) in the holding position (Fig. 8).More precisely, the first operating member (24) and the second operating member (25) rotate relative to each other around the binding axis (A) to form a first opening (20a) and a second opening (20b) with variable width between the open position (19a) and the holding position (18a); in the open position, the passages (28a~b) and spaces (53a~b) face each other and the holding parts (54) are separated from the finger (26), so that the first opening (20a) and the second opening (20b) are opened toward the bending space, allowing the wire (2) to pass through during the supply or unloading stage; in the holding position, the openings (28a) are closed by reciprocating sliding, and the holding part (54) approaches the finger (26) to engage the wire (2) and hold both branches (2') inside the binding head (20). The wire (2) is twisted around the binding axis (A). In particular, at the holding position, the wire (2) is bent relative to the finger (26) by the rotation of the binding head (20). During the twisting stage around the binding axis (A), when the operating member (13) rotates the first operating member (24) and the second operating member (25), the friction surface of the finger (26) holds the bound wire (2) and has the effect of limiting slippage. More precisely, when the wire (2) is engaged in the openings (20a~b) of the operating members (24, 25) where the width is variable, binding tension is secured and the wire (2) can slide on the same operating surface, allowing the wire (2) to be twisted correctly while avoiding expected damage to the binding material. The movement of the finger (26) toward the separation element (52) to close the openings (20a~b) is achieved by an elastic means (55), which closes the holding portions (54) that have moved toward the openings, specifically the finger (26). More precisely, at the holding position, the wire (2) is held inside the openings (20a, 20b). The holding portion (54) preferably has a curved shape that guides the wire (2) to bend toward the finger (26).A plurality of grooves (19) or notches are formed in the ring (51), and these grooves are spaced apart at an angle to be coupled to the aforementioned rearrangement means (18). For example, if the binding head (20) is rotated appropriately in a clockwise direction (B), the rearrangement means (18) are positioned beyond the nearest groove (19) of the ring (51), and the ring (51) can rotate about the binding axis (A) against the elastic means (55). In this situation, when the rearrangement mechanism (18) rotates in the opposite direction and is coupled to the groove (19), the second operating member (25) is integrated with the main body (10). When the binding head (20) rotates further, only the first operating member (24) moves so that the passages (28a, 28b) are aligned with the spaces (53a, 53b) in the open position, or the conduit (16) is aligned with the channel (23) of the binding head (20), thereby starting a new binding cycle. At the same time, the cutter (40) is also aligned or realigned in the rearrangement cycle. The bending assembly (30) serves to guide the wire (2) around the overlapping or intersecting area of ​​the first element (3) and / or preferably the second element (4) in a roughly circular manner. In practice, during the winding step, the ends of the wire (2) pass through the openings (28a, 28b) and the spaces (53a, 53b) of the binding head (20) in the open position and approach each other, and the fingers (26) and the separating element (52) are moved in the twisting or winding step in the holding position to join the wire ends. The sleeve (31) of the bending assembly (30) is inserted axially around the binding head (20) and secured to the connecting part (14) of the main body (10) by means of an attachment means (15). The sleeve (31) has a longer longitudinal extension than the binding head (20), protruding above the binding head at the assembled position, so that an operating space for bending is formed for winding the wire (2) around the elements to be joined. In particular, this operating space for bending is adjacent to the winding space from below, and twisting by the binding head (20) is performed in this space. There is a bending path of the wire (2) inside the sleeve (31).This path is composed of an input track (32) and a reverse track (33) on both sides of the binding axis (A), so that the end of the wire (2) enters the first opening (20a) of the binding head (20) to completely wind the wire (2), and then the end flows back through the corresponding second opening (20b) of the binding head to ensure a subsequent twisting step. These tracks (32, 33) are at least partially bent to guide the winding of the wire (2), and preferably are formed by special grooves in the inner wall of the sleeve (31). The winding path composed of the input track (32) and the reverse track (33) is arranged staggered along the longitudinal axis of the device (1) and has various heights to avoid interference with the crossing of the wire (2) in the case of double cross binding. More precisely, the bending path of the wire (2), in particular the input track (32) and the backflow track (33), may be made of an insert such as steel appropriately applied inside the sleeve (31). Meanwhile, for the lightweighting of the device (1), it may be made of plastic and / or aluminum. Also, each input track (32) is connected to a bending roller (34) to correspond to the natural resistance of the wire (2) in the bending path. More precisely, the roller (34) is cantilevered to the sleeve (31) or the input track (32) so that the wire (2) is separated from the track (32) during the twisting process (see FIG. 7). The backflow track (33) forms at least a conical or funnel-shaped initial portion to easily receive the twisted wire (2) from the input track (32). For this reason, a gap is created between the input track (32) and the backflow track (33) to form a space within the bending space to accommodate the elements (3, 4) to be joined. The bending assembly (30) provides a space in front to accommodate the elements to be joined. Thanks to this, the device (1) attached to the front of the bending assembly (30) can move along the longitudinal axis near the elements (3, 4) to be joined. In other words, in this configuration, the elements (3, 4) can be butted as desired.More precisely, there are grooves (35) at the free end of the sleeve (31), and these grooves are arranged in at least pairs in a cross shape with respect to the binding axis (A), so that a bending assembly (30) is placed over the intersection of the first element (3) and the second element (4) to be bound, and a wire (2) is properly wound around it (see FIG. 11a–c). In particular, when the device (1) is positioned with respect to the elements (3, 4), the shape of these grooves (35) determines the distance between the elements (3, 4) and the binding head (20). For example, when the first element (3) and the second element (4) are intersected, the depths of the elements (35) may differ to accurately support the element portion furthest from the binding head (20) (see FIGS. 31–33). FIG. 33 shows that whenever the first element (3) and the second element are intersected, an intersection area is formed in a quadrant (Q1–4) which is a plane containing the longitudinal axis (Y) of one of the first element (3) and the longitudinal axis (P) of the other, in this case, the longitudinal axis of the first element (3). Finally, the cutter (40) has a fixed knife (41) and a movable knife (42) (see FIG. 9c, 15). The fixed knife (41) is integral with the main body (10), particularly the connecting part (14), and the movable knife (42) is integral with the binding head (20), particularly the supporting member (21). The knives (41, 42) are each installed on the connecting part (14) and the supporting member (21) in the shape of fixed and movable plates, respectively, and are arranged along the wire supply path from the main body (10) to the binding head (20) when in use and each have holes (43, 44) into which the wire (2) is inserted. In fact, the cutting of the wire (2) occurs by relative rotation between the main body (10) and the binding head (20) that supports the holes through which the wire to be cut passes. If the device (1) is designed to supply a pair of wires (2), and one of the two holes, for example, the hole of the movable knife (42), is formed as a slot (44a), the wires (2) can be cut sequentially, which is advantageous for temporarily distributing the cutting work and preventing overload.Additionally, thanks to the rearrangement mechanism (18), the holes (43, 44) can be rearranged after the cutting step in the aforementioned rearrangement cycle, allowing a new supply step to be started and the wires (2) to be inserted. The operation of the device according to the present invention implementing the method according to the present invention is as described above. Double binding, particularly cross binding, is described below, which means that it is possible to bind with a different number of wires (2) for example, for simple binding. In the initial preparation stage, the variable width openings (20a, 20b) of the binding head (20) are open so that the wires (2) can be accessed, and the fixed and moving knives (41, 42) of the cutter (40) are properly positioned so that each wire (2) can pass through the channel (23) of the binding head (20) following the conduit (16). Basically, the operator controls the first rotation of the binding head (20) clockwise (B) around the binding axis (A) through the control member (12), The rearrangement mechanism (18) can be made to pass through the groove (19) closest to the ring (51) of the second operating member (25) (see FIGS. 17a–c). Subsequently, the operator can command a second rotation in the opposite counterclockwise direction (C) so that the rearrangement mechanism (18) catches on the groove (19) and blocks the second operating member (25) (see FIGS. 18a–c). As the binding head (20) continues to rotate, a relative angular displacement occurs between the first operating member (24) and the second operating member (25), thereby arranging the binding head (20) to an open position and allowing the opposing portions of the wire (2) to pass through the openings (20a, 20b) (see FIGS. 19a–c). This rearrangement process, which is achieved by the continuous and controlled rotation of the binding head (20), can be performed automatically solely by the operation of the control member (12) by the operator. At this time, The operator can position the device (1) on the overlapping portion of the first element (3) and the second element (4) to be connected. When the drawer (7) is operated by an automatic drive for each wire (2), the reel (5) is unwound and the wire (2) is supplied into the main body (10).As a result, the device (1) can perform double / single binding, allowing for rapid switching from one mode to another. Each wire (2) follows a supply path through the conduit (16) of the main body (10), the holes (43, 44, 44a) of the cutter (40), and the channel (23) of the binding head (20). The curved shape of the terminal portion (16a) of each conduit (16) "erases the memory" of any distortion that occurred in the path of the wire (2) from the reel (5) inside the device (1) (see FIG. 7). Subsequently, the end of the wire (2) emerges from the channel (23) and passes through the first opening (20a) at the open position with a controlled overlap of the first passage (28a) and the first space (53a) to reach the bending workspace of the bending assembly (30). This end of the wire (2) is bent onto the roller (34) via the input track (32) and output track (33), The first element (3) and the second element (4) are wound. As illustrated, the input track (32) and the output track (33) are arranged to wrap the elements (3, 4) to be bound in a cross shape with the wire (2) (see FIG. 26–27). At the end of the supply stage, the end of each wire (2) flows back to the binding head (20) and is guided to the second opening (28b) (see FIG. 7). Next, each wire (2) is cut by a cutter (40). To do this, a clockwise (B) rotation of the binding head (20) is commanded. Initially, as the movable knife (42) slides from the fixed knife (41) by rotational motion, the wires (2) are sheared in turn (see FIG. 20–23). The rotation of the binding head (20) also causes the release of the rearrangement means (18) and the relative angle sliding between the first operating member (24) and the second operating member (25) to come to a holding position. In this position, each wire (2) is held inside the first opening (20a) and the second opening (20b) of the binding head (20). In particular, the opposing portions of the wires (2) pass through the same openings (20a–b) from inside the binding head (20) but do not come out of them, because the holding portion (54) of the second operating member (25) is moved close to the finger (26) of the first operating member (24) to close.The relative rotation of the first operating member (24) and the second operating member (25) of the binding head (20) can be operated in an appropriate time relationship with respect to the supply of the wire (2), because when the openings (20a, 20b) are closed at the holding position, the wire (2) can be passed transversely along the binding axis (A). After cutting, the retraction of the remaining wire (2) toward each reel (5) is performed by the puller (7). This retraction prevents the remaining wire (2) that remains inside the terminal portion (16a) of the conduit (16) and is connected to the reel (5) from getting caught on the cutter (40) and becoming dangerous, and prevents the binding head (20) from being sheared at every rotation by the operation of the binding head (20) and the operation of the binding head from being blocked by the shearing portion. The backflow prevention device (60) prevents the wire (2) from being rewinded disorderly to the reel (5) during the retraction or backflow phase, and prevents the creation of a proper loop or deviation outside the reel thanks to the guide means (61) arranged at the backflow position (61b). When the binding head (20) rotates further, it pulls the end of the wire (2) held in the binding head (20) during the twisting phase around the binding axis (A). In particular, in the holding position of the binding head where the openings (20a~b) are closed, rotation around the binding axis (A) causes the opposing portions of the wire (2) coming out of the openings (20a, 20b) to bend and come into contact with the finger (26). Thanks to the holding action of the bending portions of the opposing parts of the wire (2) reinforced by the guide tracks (32, 33), specifically the work surface (27) with increased friction, each wound wire (2) is tightened as it gradually approaches the first element (3) and the second element (4) (see FIG. 34–37). In particular, during the initial twisting stage, when the wire (2) is tightened around the first element (3) and the second element (4), the opposing branches (2') of the wire (2) are arranged to cross between the elements to be bound and the binding head (20) (see FIG. 38).Opposing branches (2') that are closest to the binding head (20) and contact the elements (3, 4) to be bound are incident and are incident between the binding elements at a binding angle (β), which is a function of the size of the elements to be bound, particularly curved or straight horizontal or vertical elements, and these elements are placed next to the binding head (20), preferably at a distance (h) between the binding head (20) and the elements (see FIG. 38). In practice, this distance (h) can be adjusted in the shape of the groove (35) of the bending assembly (30), and this groove determines the support of the device (1) for the elements to be bound. This adjustment can be made using an adjustment stopper, specifically by placing a spacer in the groove (35) or by replacing the bending assembly (30). The binding angle (β) is adjusted so that the tension of the wire (2) during the twisting stage around the binding axis (A) is neither too large nor too small, but appropriate. If the tension is too large, it is tightened too tightly and breaks quickly, and if the tension is too small, the distance h becomes excessively large, and the equally extended twisted part (101) will, for example, pop out of the concrete cover. When the control unit (9) detects that the operating member (13) is idling or has exceeded the set number of rotations, the operating member stops. In particular, the twisting stage can end when the wire twisted part (101) is damaged and there is a residual part (102) to be discharged from the binding head (20). The tension of the twisted part (101) is properly set so that it does not protrude from the concrete cover and is covered. In the case of double binding (100), 7 or 8 bindings are required to form a tight, regular, and dense twisted section (101). When the horizontal dimensions of the elements (3, 4) are the same, the number of rotations is a function of the distance between the elements (3, 4) and the binding head (20) in any case when the device (1) is located at the joint, and is a function of the horizontal dimension or diameter of the wire. Therefore, when the binding head (20) rotates, the twisted section (101) is separated from the remaining section (102) of the wire (2), and at this time, the remaining section is attached to the binding head (20).The simple / double binding section (100) is formed specifically by winding (103) and twisting section (101) (see FIG. 37). Whether simple or double, the optimal position of the twisting section (101) of the binding section (100) is equal to the optimal height of the twisting section (101) of the binding section (100). In practice, the optimal height of the twisting section (101) separated from the residual section (102) is generally about 20 mm or less, to the extent that it does not protrude from the concrete cover during use. At the same time, this optimal height is sufficient to ensure effective sealing and rigidity of the binding section corresponding to the twisting section (101). It is advantageous to separate the residual section (102) by shearing the wire (2) while twisting it. In this case, the use of additional cutters can be avoided. In fact, experiments have statistically shown that the twisted wire (2) self-breaks at an optimal height at a binding angle (β) of 70° to 135°, preferably 90° to 110°. To obtain this optimal height and to respect the experimental angles confirmed in the binding elements (3, 4) of different transverse dimensions, the connection of the grooves (35) in front of the bending assembly (30) can be appropriately adjusted at the distance h. Basically, since a self-sheared twist of optimal height can be obtained at an optimal distance h, a special cutter does not need to be used, and thus the cost and weight of the device (1) can be reduced. At the end of the binding stage, as previously mentioned, a new rearrangement cycle operated by the rearrangement mechanism (18) is performed so that the binding head (20) returns to an open position and discharges the residue (102), which is waste of the wire (2). In the rearrangement stage, the knives (41, 42) are rearranged to prepare for a new binding cycle. In particular, at this final stage of the cycle, various preparatory operations for the next binding cycle can be performed through the control member (12). For example, the operation of the puller (7) can be commanded to push the wire (2) into the channel (23) to discharge the residue (102) and clean the channel (23).Next, the same wire (2) can be retracted automatically or manually beyond the terminal portion (16a) of the conduit (16) to prepare to “cancele” the memory of all distorted states of the wire (2) caused by the arrangement of the device or connecting means (9) in the next supply stage. According to other embodiments of FIGS. 41–45, the cutter (400) is used to reduce the residual portion (102) and to easily discharge it from the binding head (200). The cutter is capable of being coupled, and its features will be described later. In this case, the operating unit (13) can produce both rotational motion and axial motion as described above, particularly axial sliding motion. For example, the same operating member can generate rotational and axial motion using a known screw-cam mechanism, but this is omitted in the drawing for convenience. The binding head (200) has a third operating member (260) having the function of a movable knife (442) in addition to the first operating member (240) and the second operating member (250) which are functionally similar to those described above, and the movable knife slides axially between the inner first operating member (240) and the outer second operating member (250), which have the function of a fixed knife. Compared to the previous embodiment, cutting is achieved by relative sliding between the third operating member (260) and the first operating member (240). In particular, the slot (442) formed in the third operating member (260) extends longitudinally and has the function of a movable knife (442), cutting the wire (2) coming out of the channel (23) from the first operating member (240) as described above. Accordingly, as before, cutting occurs on the cylindrical outer surface of the first operating member, rather than on a plane transverse to the binding axis (A). The third operating member (260) is integral with the axial axis (261), and this axis is articulated with the third operating member (260) (see FIG. 42c). The third operating member (260) can move axially within an operating stroke between the first inactive retraction position, the cutting position (Fig. 44), and the bending position (Fig. 45) further advanced in the same direction, while advancing along the axial cutting direction (T) toward the first operating member (240).In fact, beyond the cutting position, bending of the shear end of the wire (2) occurs at the holding portion (54) of the second operating member (250) in the extension of the above stroke (see FIG. 45). The operation of the device according to this embodiment is exactly the same as described above. In particular, when the shaft (261) is in the inactive position, the wire (2) can be fed to the binding head (200). During this step, each wire (2) is wound and bent around at least one of the elements (3, 4). Next, the operating member (13) is actuated so that the operating stroke of the third operating member (260) occurs, for example by the screw-cam mechanism described above. This stroke is directed toward the bending workspace, which in the illustrated embodiment is directed downward, or toward the opposite upward to return to the inactive position when all residues are discharged. The stroke of the shaft (261) determines the bending position following the cutting position of the wire (2), the wire shearing to the first operating member (240), and the bending of the sheared ends that are engaged. The remaining wire (2) is pulled back to empty the channel (23) of the binding head (200). At this time, the operating member (13) rotates the binding head (200) through a screw-cam mechanism to continue the desired binding as described above. The additional steps are almost the same as described above, in particular the discharge of the residual portion (102) of the binding portion (100). According to the embodiments of FIGS. 46–48, the bending assembly (300) of the device (1) can perform a double parallel binding (100'). More precisely, there is a winding (100a) of wire (2) and a winding (100b) of additional wire (2), which are spaced nearly parallel by the overlap of elements (3, 4), and a single twist (101) is formed by the four branches (2') of each wire (2) and the other wire (2) around the same binding axis (A). FIG. 47 shows an intermediate binding stage where the twist (101) is not yet visible, but FIG. 48 shows the binding (100') as a final stage.In this case, the bending assembly (300) has a pair of forks (360), each fork forming an input track (320) and a counter-flow track (330), and these tracks are arranged in parallel to wrap the wire (2) and additional wire (2) around the elements (3, 4). The forks (360) are connected by a crossbar (370). There are grooves (350, 351) in the crossbar (370) and the forks (360), and the element furthest away from the element when the elements are overlapping is connected to the groove. The input track (320) is connected to at least one contrast roller (340) as in other embodiments. The operation of this embodiment is similar to that described above. The device (1') of the embodiments of FIGS. 49–71 includes a main body (10') extending along a binding axis (A') and a handle (11') extending perpendicularly to the main body (see FIG. 49). The main body (10') includes at least one wire guide shell (160), preferably a pair of wire guide shells (160) spaced apart at an angle of about 90° around the binding axis (A'). Each shell (160) has a conduit (16') inside, and a rigid portion (16a') of a curved length in the conduit, so as to divert the wire (2) from the insertion direction into the main body (10') parallel to the binding axis (A'), specifically, to be directed approximately perpendicularly to the binding axis (Fig. 51). For this reason, the wire (2) can be inserted into the first opening (20a') from the outside toward the inside rather than from the inside of the binding head (20'), thereby maintaining the overall size of the wire (2) winding. The bending assembly (30') is mounted at the end of the device into which the wire (2) enters. As described above, the device (1') further includes a binding head (20') inserted coaxially into the bending assembly (30'). The binding head (20') cuts the wire (2), tightens it around the binding axis (A'), twists it, and unbinds the binding part (100). It is preferable for the binding head (20') to perform these operations using only the operating member (13).The operating member (13) operates the attachment member (130') of the output section, and the attachment member is installed integrally with the electric element (132') through the connecting part (131'). The electric element (132') is made of a ring having a female screw (133') and is coupled to the screw element to transmit motion, which will be described later. The electric element (132') is supported on the main body (11') by the rolling support member (110'). The binding head (20') includes a first operating member (240') and a second operating member (250'), and the first operating member is inserted axially into the second operating member. The second operating member (250') is a tubular body in which one end forms the electric section (251') and the other end forms the cutting section (252'). The transmission part (251') is coupled to the transmission element (132') and receives the movement of the operating member (13). The transmission part (251') is composed of a screw thread that is screw-coupled to the female screw (133') of the transmission element (132') and transmits the corresponding rotational movement together with the axial translation element. The cutting part (252') has a first space (53a') and a second space (53b'). The first space (53a') is formed by a first slit, and the second space (53b') is formed by a second slit, which extend longitudinally parallel to the binding axis (A') and act on the portion of the wire (2) to be cut and then tightened and clamped by the same cutting section (252'), and on the opposite end of the same wire to be tightened (see FIG. 56). The first space (53a') and the second space (53b') are long slits, which serve to pass the wire (2) through the cylindrical wall of the cutting section (252'). Inside the wall, these slits lead to a groove, which is an extension differentiated to fit the first space (53a') and the second space (53b'), and end at the same longitudinal height. This groove (256') serves to accommodate the ends of the wire (2) that are tightened and bent between the outer wall of the first operating member (240') and the inner wall of the cut portion (252') of the second operating member (250'). Essentially, these grooves (256') can serve as guides for such bending.The first space (53a') and the second space (53b') have different lengths, so they can act differently on each end or part of the wire (2). As described below, the first space (53a') has a larger extension and a cutting blade that acts as a movable knife for the wire (2) in at least part, particularly at the top of the slit, and the second space (53b') has a shorter extension and tightens the wire (2) prior to the cutting operation performed by the second operating member (250') as described below in order to act with one end of the wire (2). The first space (53a') and the second space (53b') are separated from each other by a separating element (52') that forms an annular portion of the cutting portion (252') (Fig. 56). The second operating member (250') has a first guide member (254') inside that is made of a transverse pin to guide the movement of the first operating member (240'). The second operating member (250') has a second guide element (255') outside that is in the form of a radial pin and is a fixed element of the device (1'). It guides the movement of the second operating member (250') by being inserted into the longitudinal slit (410') formed in the fixed knife (41') of the cutter (40'). More precisely, when the second guide element (255') is coupled inside the slit (410'), the rotational movement by the operating member (13) is converted into the axial movement of the second operating member (250') through the electric element (132'), thereby cutting the wire (2) (Figs. 55-56). Preferably, a pair of radial pins are formed on the outer surface of the second operating member (250') in opposite directions, each engaging with the longitudinal slit (410') of the fixed knife (41'). The fixed knife (41') may be configured as a sleeve that is fixed to the main body (10') of the device (1') and inserted outwardly into the cutting portion (252') of the second operating member (250'). In particular, the fixing knife (41') may have an opening (17') for inserting the wire (2) into the binding head (20').Thanks to the guide provided by the slit (410'), the second operating member (250') cuts the portion of the wire (2) inserted into the entrance (17') with the cutting blade in the first space (53a') through a translational cutting motion. Meanwhile, the cutting blade defining the end of the second space (53b') with the same translational motion tightens and butts the opposing end of the wire (2) against the finger (26') of the first operating member (240'), which will be described later. In particular, thanks to the differentiated extension, after the cutting blade tightens the end of the wire (2), the wire (2) is cut by the cutting blade defining the first space (53a') during the cutting stroke of the translational motion. The fixed knife (41') is blocked by a cover (111') with its lower end fixed to the main body (10') of the device (1'). The binding head has a rearrangement mechanism (18') as in the previous embodiment. The lever of the repositioning mechanism is articulated with the fixed cover (111') and engages around the second operating member (250') with the help of an elastic means. The operating member is repositioned at the end of the binding cycle due to the repositioning mechanism (18'). Specifically, by the lever of the repositioning mechanism, rotation of the second operating member (250') in one direction is allowed, and rotation in the opposite direction is prevented. This mechanism can be used to return the pin (255') of the cutting part (252') to the guide slit (410') in the cover (111') and the fixed knife (41'). The first operating member (240') is inserted coaxially into the second operating member (250') by a toothed third guide element (241'), which is inserted radially into the seat (244') open on the outer surface of the first operating member (246'). The third guide element (241') is inserted into the seat (244') through an intermediate elastic means (55') and comes into contact with the closing element (245') that was fixed to the seat (244') (Figs. 55, 59). There is a guide groove (242') in the first operating member (240') into which a pin (254') attached to the second operating member (250') can be inserted.This groove (242') is located on the outer surface of the first operating element (240') in a longitudinal direction parallel to the binding axis (A') and communicates with the sheet (244'). This groove (242') forms an extension (243') in the circumferential direction, and a third guide element (241') protrudes from the extension to guide the first operating member (240') relative to the second operating member (250'). Due to the length portion of this groove (242'), the second operating member (250') slides out of the first operating member (240') and performs a cutting motion downward, and after cutting, the two rotate together during the binding stage. Meanwhile, due to the extension (243') of the groove (242'), relative rotational movement between the first operating member (240') and the second operating member (250') is possible in the upward return stroke to release the terminated binding part (100"). Likewise, the first operating member (240') also forms one or more pairs, preferably four fingers (26'), arranged at a certain angle around the binding axis (A'). Passages (28'~b') for inserting the end of the wire (2) are formed between the fingers (26') (Fig. 58). The passages (28a', 28b') and spaces (53a', 53b') overlap in various ways to form a first opening (20a') and a second opening (20b'), and the binding steps proceed as these openings change from an open position to a holding position. The first The finger (26') of the operating member (240') forms a ring-shaped support (26a') unlike before, and the support supports the end of the wire (2) that is tightened and bent by the second operating member in cooperation with the edge defining the first space (53a') and the second space (53b') of the second operating member (250'). The bending assembly (30') of the device (1') has a function and structure similar to that described above and can be applied to other types of binding heads. The bending assembly (30') has a plurality of grooves (35'), such as four, and these grooves function to equally support the device (1') on the intersecting first element (3) or second element (4), and support without distinction when the supporting elements are arranged closer or further from the binding head (20, 20').For this reason, the orientation of the device (1') is flexible, as a specific pair of grooves does not need to be placed on the closest or farthest element (Figs. 60–62). Additionally, there is a stopper (38) in the form of a protrusion inside the bending assembly (30'), which engages the end of the wire (2) to prevent the wire from advancing at the end of the winding stage through the input track (32) and the output track (33). The stopper (38) is positioned on the inlet side of the input track (32) to prevent backflow of the end of the wire (2) already wound on the elements (3, 4). Finally, the bending assembly (30') includes an attachment means (15) that is rapidly detachably connected to the main body (10, 10') of the device (1, 1'). The operation of the device (1') according to the present embodiment will be known from the above description. In the initial stage, the operating member (13) raises the second operating member (250') along the binding axis (A'). At this stage, the second operating member (250') slides axially outside the first operating member (240') by being guided by the first guide member (254') inside the groove (242'), which also prevents relative rotation between the two operating members (240', 250'), and the first operating member is fixed at the same height with respect to the binding axis (A') (Figs. 63a, 63b, 63). During the second feeding stage, the drawing machine (7) operates to pass the wire (2) through the input track (32) and output track (33) of the bending roller (34) and the bending assembly. In this way, the wire is bent and the elements to be bound are wound while crossing each other. At the same time, the four ends of the wires (2) pass through the passages (28a', 28b') of the first operating element (240) (Figs. 64a, 64b, 64). Subsequently, the second operating member (250') begins translational motion relative to the first operating member (240'). The operating member (13) is actuated and the drive element (132') is coupled to the drive portion (251') of the second operating member (250'), causing the second operating member to perform downward translational motion relative to the first operating member (240') contained therein (see Figs. 65a, 65b, 65).During downward translational motion, the cutting edge of the cutting portion (252') of the second operating member (250'), specifically the second space (53b'), comes into contact with and catches the free ends of the wire (2). When the puller (7) operates backward, the wire (2) is pulled backward and wound around the elements (3, 4) to be bound (see FIGS. 66a, 66b, 66). As the cutting portion (252') continues to move downward, two wires (2) are cut and wound across each other, but the wires are not limited to two (Figs. 67a, 67b, 67). When the translational motion of the cutting portion (252') is finished, the ends of the wire (2) are completely fixed between the edge of the second space (53b') and the support portion (26a') of the finger (26). Four free ends are tied and tightened around a hook on the first operating member (240') through the lowering of the cutting portion (252') and the interlocking of the edges defining the space (53a', 53b') (Figs. 68a, 68b, 68). The operating member (13) rotates the first operating member (240') and the second operating member (250') together around the binding axis (A') to twist the wire (2), and the wire tightens and winds the first element (3) and the second element (4) (Figs. 69a, 69b, 69). During this stage, the integrated rotation of the two operating members is made possible by the fact that the second guide element (255') comes out of the slit (410') of the fixed knife (41'). At this time, the reverse stroke of the cutting part (252') is activated in the opposite direction, specifically by an upward stroke to an intermediate level, by the operating member (13). Thanks to a cam mechanism equipped with a toothed guide element (241'), the first operating member (240') rotates relative to the second operating member (250') to unwind the bent ends of the wire (2) at the support member (26a') (Figs. 70a, 70b, 70). Thus, the binding member (100) has a winding (103'), a twisted member (101'), and a bent end (104') protruding from the twisted member (101'). Simple binding of these ends of the wire (2) reduces the consumption of the wire (2) and limits the height of the binding member.The device according to the present invention enables effective and reliable bonding. In actual embodiments of the present invention, the materials, shapes, and dimensions used may be changed as needed.

Claims

Claim 1 A method of binding a metal wire around a first element (3) and a second element (4) of a long shape including a reinforcing bar: a. A step of providing a device (1, 1') for binding a wire (2) to the first element (3), wherein the device (1, 1') comprises a main body (10, 10') for receiving a wire (2) being unwound, a bending assembly (30, 30', 300) fixed in front of the main body (10, 10') and arranged around a longitudinal binding axis (A, A') to guide the wire while winding the wire (2) to the first element (3) and / or second element (4) in an internal bending operating space, a binding head (20, 20', 200) attached to the main body (10, 10') along the binding axis (A, A'), a cutter (40, 400, 41') for cutting the wire (2), and an operating member (13) for rotating the binding head around the binding axis (A, A'), wherein the binding head is a bending It is located within an assembly (30, 30', 300) and twists the branches (2') of the wire (2) together around a binding axis (A, A'), and the binding head has a first operating member (24, 240, 240') and a second operating member (25, 250, 250'), and the first operating member has a plurality of fingers (26, 26'), which are spaced apart at an angle around the binding axis, and a first passage (28a, 28a') and a second passage (28b, 28b') of the wire (2) to be wound are formed between the fingers, and the second operating member has a plurality of separating elements (52, 52') that are inserted axially around the first operating member and spaced apart at an angle around the same binding axis (A, A'), and a first for the wire (2) to be wound to pass through A space (53a, 53a') and a second space (53b, 53b') are formed between the separating elements, and the first operating member (24, 240, 240') and the second operating member (25, 250, 250') can move in relative rotation and / or translational motion around or along the binding axis (A, A') between the open position and the holding position, and in the open position, the first passage (28a,Step b, wherein the first passage (28a') and the second passage (28b, 28b'), the first space (53a, 53a') and the second space (53b, 53b') are each arranged to face each other in a transverse direction along the binding axis, and a wire (2) is passed between them, and at the holding position, the first passage (28a, 28a') and the second passage (28b, 28b'), and the first space (53a, 53a') and the second space (53b, 53b') move, rotate, or translate relative to each other, and as a result of such relative movement, the opposing parts of the wire (2) are held; c. A step of supplying the wire (2) to the device (1, 1') that has moved the wire (2) near the first element (3) by means of a drawing machine (7) connected to the device (1, 1'), and guiding the wire end through a first passage (28a, 28a') and a first space (53a, 53a') that are partially opposite each other at the open position; d. A step of bending the supplied wire (2) and winding the wire annularly around the first element (3) and / or the second element (4) by means of a bending assembly (30, 30', 300), wherein the end of the wire (2) passes through a second passage (28b, 28b') and a second space (53b, 53b') that are facing each other at the open position; d. Step b, before and after supplying the wire (2), the first operating member (24, 240, 240') and the second operating member (25, 250, 250') of the binding head (20, 200, 20') are actuated by the relative movement with respect to the binding axis (A, A') to align the binding head (20, 200, 20') from the open position to the holding position, and simultaneously or subsequently, the opposing portions of the wire (2) are held; e. the movable knife of the cutter (40, 400, 40') having a fixed knife and a movable knife (42, 252') is moved together with the binding head (20, 20') to supply the wire (2) to the binding head (20, 200, 20') the first passage (28a, 28a') and the first space (53a,A method characterized by comprising: a step of cutting the wire (2) at each part arranged upstream of 53a'); and f. a step of rotating the binding head (20, 20', 200) arranged in the fixed position around the binding axis (A, A') by means of an operating member (13) to bind the wire (2) wound and held in the opposite parts. Claim 2 A method according to claim 1, characterized in that the first passage (28a, 28a') and the first space (53a, 53a'), and the second passage (28b, 28b') and the second space (53b, 53b') form a first opening (20a, 20a') into which a wire (2) enters and a second opening (20b, 20b') into which the winding wire (2) flows backward. Claim 3 A method according to claim 1 or 2, wherein the first operating member (240') and the second operating member (250') alternately operate in a translational motion along a binding axis (A, A') to hold one of the opposing portions of the supplied wire (2), and, prior to step e, cut the remaining portions of the opposing portions of the wire (2) and reverse the wire (2) to the drawing machine (7) to tighten the wire (2) winding around the first element and / or the second element (4). Claim 4 A method according to claim 1 or 2, characterized by bending the opposing portions of the wire (2) with respect to each support portion (26a') protruding from the finger (26') of the first operating member (24, 240, 240') after step e. Claim 5 A method according to claim 2, wherein, when rotating relatively around the binding axis (A), the first operating member (24, 240) and the second operating member (25, 250) of the binding head (20, 200) are operated alternately, and the holding part (54) protruding horizontally from the separating element (52) of the second operating member (25, 250) is moved near the finger (26) of the first operating member (24, 240) to close the open side of the first opening (20a) and the second opening (20b) toward the bending operating space, thereby confining the opposing parts of the wire (2) inside. Claim 6 A device (1, 1') for binding a metal wire around a first element (3) and a second element (4) of an elongated shape including a reinforcing bar, comprising: a main body (10, 10') for receiving a wire (2) being unwound; a bending assembly (30, 30', 300) fixed in front of the main body (10, 10') and arranged around a longitudinal binding axis (A, A') to guide the wire while winding the wire (2) around the first element (3) and / or the second element (4) in an internal bending operating space; a binding head (20, 20', 200) attached to the main body (10, 10') along the binding axis (A, A'); a cutter (40, 400, 41') for cutting the wire (2); and an operating member (13) for rotating the binding head around the binding axis (A, A').It includes, wherein the binding head is located within a bending assembly (30, 30', 300) and twists the branches (2') of the wire (2) together around a binding axis (A, A'), and the binding head has a first operating member (24, 240, 240') and a second operating member (25, 250, 250'), and the first operating member has a plurality of fingers (26, 26'), which are spaced apart at an angle around the binding axis, and a first passage (28a, 28a') and a second passage (28b, 28b') of the wire (2) to be wound are formed between the fingers, and the second operating member has a plurality of separating elements (52, 52') that are inserted axially around the first operating member and spaced apart at an angle around the same binding axis (A, A'), and the wire (2) to be wound A first space (53a, 53a') and a second space (53b, 53b') for passage are formed between the separating elements, and the first operating member (24, 240, 240') and the second operating member (25, 250, 250') can move in relative rotation and / or translational motion around or along the binding axis (A, A') between the open position and the holding position, and in the open position, the first passage (28a, 28a') and the second passage (28b, 28b'), and the first space (53a, 53a') and the second space (53b, 53b') are respectively arranged to face each other in a transverse direction along the binding axis to pass a wire (2) between them, and in the holding position, the first passage (28a, 28a') and the second passage (28b, 28b'), and the first A device characterized in that a space (53a, 53a') and a second space (53b, 53b') move, rotate, or translate relative to each other, and as a result of such relative movement, hold opposite parts of the wire (2); and the cutter (40) has a fixed knife (41, 41') and a movable knife (42, 252'), and the movable knife moves together with the binding head (20, 20'). Claim 7 A device according to claim 6, wherein each finger (26') of the first operating member (240') forms a protruding support (26a'), and such protruding support cooperates with each edge defining the first space (53a') and the second space (53b') of the second operating member (250'), and the edge bends the end of the wire (2) relative to the support (26a') as a result of the relative translational movement. Claim 8 A device according to claim 6, wherein the first passage (28a) and the second passage (28b) have open sides toward the bending space, and the open sides are closed by a relative rotational movement in which a holding member (54) protruding from the separating element (52) of the second operating member (25) moves toward the finger (26). Claim 9 A device characterized in that, in any one of claims 6 to 8, the fixed knife (41') is a sleeve fixed to the main body (10') having an opening (17') for inserting the wire (2), the movable knife (252') is a cutting blade shape defining the first space (53a') of the second operating member (250'), the second operating member (250') is inserted coaxially into the fixed knife (41'), and the cutting blade slides beyond the opening (17') in the direction of the binding axis (A') through the relative translational motion to cut the wire (2). Claim 10 A device according to any one of claims 6 to 8, wherein at least one wire guide shell (160) is fixed to the main body (10'), and a guide conduit (16') of the wire (2) is located inside the guide shell, and the conduit is arranged to deflect the wire (2) in a transverse direction perpendicular to the binding axis in the direction of insertion into the main body (10') parallel to the binding axis (A'). Claim 11 A device according to any one of claims 6 to 8, further comprising a unit (6, 6') capable of receiving and transporting a wire (2) reel (5); wherein the unit comprises at least one drawer (7) for sending the wire (2) unwound from the reel (5) to the device (1, 1'), a connecting means (9) for guiding the wire (2), and a power source for the device (1, 1'). Claim 12 delete

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