Method and device for winding clips

Abstract

The invention relates to a method for winding shaped wire (7), in particular a clip strand, said method comprising: providing the shaped wire (7); feeding the shaped wire (7) to a spool (9); winding the shaped wire (7) onto the spool (9) to form a wire reel (18); and strapping the wire reel (18), that is wound around the spool (9), with a strapping material (30), the strapping material (30) being passed between the spool (9), in particular a cylindrical main body (10) of the spool (9), and the wire reel (18). The invention also relates to a spool (9) for winding shaped wire (7) and to a machine (22) for winding shaped wire (7).

Description

[0001] Method and device for winding clips

[0002] The present invention relates to a method for winding shaped wire, a reel for winding shaped wire and a machine for winding shaped wire.

[0003] Spools are a frequently used means of storing and transporting wire. The wire is wound onto a spool core. To prevent the wire from slipping sideways when wound onto the spool, the spool core usually has two side walls between which the wire is wound. The side walls are particularly essential for formed wire, especially clip wire. Two adjacent layers of the wound formed wire or clip wire interlock, allowing the two layers to slide sideways relative to each other. Without side walls, only a few layers could be wound onto the spool core. The entire spool, including the wound wire, is then strapped or wrapped in film before the spool and wire are shipped together. Strapping describes the wrapping of the wound wire, for example with a plastic band, to prevent it from unintentionally unwinding.Returning the empty spool after the wire has been used up is usually not economically viable, so the empty spool is disposed of. This results in a large amount of waste every year.

[0004] In the present invention, a formed wire is understood to mean a wire which extends essentially along a longitudinal axis and has a defined shape in the longitudinal direction. The wire is deformed orthogonally to the longitudinal axis. One possible design of a formed wire is the juxtaposition of alternating mirrored Z-profiles or U-profiles. A formed wire is formed by forming a straight wire with a flat or round cross-section. A clip strand is a special form of formed wire. Clip strands can be wavy or resemble a sequence of the Greek capital letter omega. Clip strands are often used to close packaging or foodstuffs, for example sausages. An individual clip is separated from the clip strand and, under plastic deformation, formed around one end of the packaging, for example a sausage skin.The packaging is then compressed and held between two legs of the clip. Clip strands can be made of metal, such as aluminum, plastic, or a degradable material.

[0005] US 5735483 A discloses a multi-part reel for winding clips. The side walls of the reel have circumferential slots for securing the reel core. DE 202007006428 U1 discloses a clip reel with radially extending slots in the side walls. The slots serve as fill level indicators.

[0006] The coils known in the prior art have in common that the wound wire can only be strapped together with the coil. The object of the present invention is to provide an efficient and environmentally friendly solution for winding and transporting shaped wire. This object is achieved by a method for winding shaped wire according to claim 1, a coil for winding shaped wire according to claim 8, or a machine for winding shaped wire according to claim 14.

[0007] In this application, the term winding is used synonymously with spooling.

[0008] A method according to a first aspect of the present invention for winding forming wire, in particular a clip strand, comprises providing a forming wire, hereinafter also referred to simply as wire, feeding the forming wire to a spool, winding the forming wire onto the spool to form a wire coil, and strapping the wire coil wound around the spool with a strapping material. The strapping material is guided between the spool, in particular between a cylindrical base body of the spool, and the wire coil. The cylindrical base body of the spool can also be referred to as the coil core.

[0009] The coil may be a transfer coil, in particular a transfer winding coil and / or a transfer unwinding coil.

[0010] This makes it possible to strap only the wire coil. Only the wire coil can be strapped. It is possible to strap the wire coil without the spool. The strapped wire coil can then be removed from the spool and thus transported without the spool. For this purpose, the spool can be constructed in several parts and can be disassembled. Alternatively, the spool can have foldable or deformable side walls. In this context, the term "wire coil" is synonymous with the wound wire.

[0011] During strapping, the strapping material is formed into a strapping ring around the wire coil. The strapping ring can extend through the central free area of ​​the wire coil.

[0012] The strapping material can be, for example, a wire, an adhesive tape, a cord, a cable tie, a metal strap, or a plastic strap. The strapping material can be made of plastic, particularly polypropylene or polyester. The strapping material can be made of recyclable materials. The strapping material can be biodegradable.

[0013] The spool may comprise a spool base body and two side walls. The strapping material can be guided around the wound wire coil through recesses in the spool, in particular in the side walls and / or the spool base body. The recesses can be slots or guide channels. The spool may consist of a spool core, also called a base body, and side walls. Slots in the side walls of the spool can allow the strapping material to be passed laterally between the spool and the wire coil. The spool core can also have recesses, in particular grooves, channels, or depressions. This makes it easier to pass the strapping material between the wire coil and the spool.

[0014] The recesses in the side walls can be guide channels in the form of grooves, channels, or depressions. The guide channels in the side walls can be aligned with the guide channels in the spool core to form continuous guide channels. The strapping material can first be guided through a guide channel in a first side wall between the first side wall and the wire spool. The strapping material can then be guided through the guide channel of the spool between the spool and the wire spool. After that, the strapping material can be guided through a guide channel in a second side wall between the second side wall and the wire spool. At at least one end of the guide channels in the side walls, the strapping material can be deflected by a fillet or a bevel. The fillet or bevel is preferably arranged in the first and / or second side wall in the region of the guide channel.This makes it easier to feed the strapping material through the continuous guide channel.

[0015] The strapping material can be guided at least once through a free space formed by the wire reel at the center of gravity of the wire reel.

[0016] The strapping can be performed at at least two points, preferably at least three points, and preferably at least four points on the wire coil wound around the spool. The strapping can be equidistant from each other along the wire coil.

[0017] The wire can be wound up in a winding device. The spool can be part of the winding device. For example, the winding device can comprise a spool base in the shape of a cylinder and a side wall extending therefrom. The winding device can further comprise a second, movable side wall. During the winding process, the second side wall can be adjacent to the spool base, in particular connected to the spool. After the winding process, the fed wire can be separated from the wire spool and the wire spool can be strapped onto the spool. The strapping material can be passed between the wire spool and the spool thanks to the recesses in the side walls. After strapping, the second side wall can be moved away from the spool base and the strapped wire spool can be removed from the spool base.The strapped wire roll can then be transported and shipped without the spool.

[0018] The wire can be wound up in a winding device in which the spool is a separate component, i.e. not part of the winding device. The spool can be inserted into the winding device. For example, the spool can be placed on a holder, e.g. in the form of a cylinder, of the winding device, whereby the spool can be connected to the holder in a rotationally fixed manner. The inner diameter of the spool can be a precise match to the outer diameter of the holder, whereby rotation of the holder can be transmitted to the spool via friction. The spool can also be connected to the holder in a rotationally fixed manner by recesses and projections in the spool and the holder. The holder and thus also the spool can be rotated, whereby a wire fed to the spool is wound onto the spool to form a wire reel. After winding, the wire reel can be strapped in the winding device.Alternatively, the wire coil, including the spool, can be removed from the winding device and strapped outside of the winding device. This has the advantage that a new spool can be inserted into the winding device and wrapped with wire while the strapping process is in progress, thus increasing productivity.

[0019] After the wire coil has been strapped in the spool, one side wall of the spool can be removed. Alternatively, the spool core can be disassembled. This allows the strapped wire coil to be removed from the spool. The spool can then be reassembled. Alternatively, at least one side wall of the spool can be designed to be foldable or easily deformable. This allows the strapped wire coil to be removed from the spool body by deforming or folding one side wall.

[0020] The coil base body can be cylindrical and extend along an axis. The strapping can take place essentially in the radial and axial directions of the coil base body. The axial direction of the coil base body can in particular be referred to as the winding axis. The wire can be fed to the coil by machine. The wire can be wound onto the coil by machine. The wire coil can be strapped by machine. For example, the wire can be wound onto the coil by machine and the wire coil can then be strapped by hand. Likewise, the wire can be wound onto the coil by machine and the wire coil can then be strapped by machine.

[0021] The method may further comprise removing the strapped wire coil from the spool. The method may further comprise transporting the strapped wire coil without the spool to an unwinding device. The strapped wire coil may be placed on a second spool. The method may further comprise placing the strapped wire coil on a second spool. The second spool may be structurally identical to the first spool. The second spool may be part of the unwinding device or a separate component. If the second spool is not part of the unwinding device, the second spool may be inserted into the unwinding device, for example, placed on a holder. Once the wire coil is on the second spool, the strapping can be removed. The formed wire can then be unwound from the second spool.This process has the advantage that only one or a few spools are required at the winding and unwinding devices. Since only the wire coil is strapped, the strapped wire coil can be transported without the spool. In prior art processes, the wire coil and spool are always strapped, which is why the spool must be shipped with the coil.

[0022] At the beginning of the winding process, the formed wire can be wrapped around the coil base once and connected to itself, or it can be attached to the coil, particularly the coil base, so that the formed wire does not slip off the coil base during winding. The coil base can include a recess or projection. The recess or projection can temporarily hold the formed wire in place, particularly during the winding process.

[0023] The method may further initially comprise unwinding a wire base material from an initial spool. The wire base material, also referred to as base material, may have a round cross-section or a flat cross-section. The unwound base material with a round cross-section may be fed to a rolling mill. In the rolling mill, the base material may be converted into a flat cross-section. The base material with a flat cross-section or round cross-section may be fed to a press. The press may form the base material into a shaped wire, in particular a clip profile or a clip strand. The shaped wire may then be fed to the spool and wound onto the spool.

[0024] After the forming wire has been fed to the spool, the forming wire, in particular a front end of the forming wire, can be captured by a mechanism, in particular a capture mechanism. The forming wire can be directed towards the spool or aligned with it by a guide system. The guide system can be positionable in different directions. The guide system can be movable in vertical and / or horizontal directions. The guide system can be movable in a direction parallel to the longitudinal extent of the spool core. The forming wire can be guided by the guide system to the spool core, in particular tangentially to the spool core. Subsequently, the forming wire, in particular the front end of the forming wire, can be held in position by a holding mechanism. The forming wire, in particular the front end, can thereby be fixed relative to the spool, in particular the spool core.This can enable or facilitate the winding of the forming wire onto the spool. The holding mechanism can be designed to rotate together with the spool core. The first side wall and / or the second side wall of the spool can have an opening. The holding mechanism can engage the forming wire, in particular the front end, through the opening and secure it.

[0025] The method preferably further comprises adjusting, in particular controlling, the position of the guide system to the current outer radius of the wire spool. This allows the angle of incidence of the forming wire to be kept constant. In particular, the forming wire can always be fed tangentially to the spool base or tangentially to the wire spool. The angle of incidence is, in particular, the angle between the fed forming wire and the tangential direction of the spool core at the point where the forming wire meets the spool body or the wire spool.

[0026] The position along the winding axis, in particular the axis of the coil core, at which the fed formed wire meets the coil body or wire reel, can be referred to as the laying position. An axis running orthogonal to the winding axis and through the laying position can be referred to as the laying axis. The laying axis can, in particular, correspond to the axis of the guide system.

[0027] Multiple tracks can be wound in the axial direction of the spool core. The distance between two tracks can be referred to as the pitch and corresponds in particular to the forming wire width or the clip strand width. The pitch can be specified in millimeters. The method preferably further comprises winding the forming wire at a constant pitch. The winding of the forming wire can take place with a partially constant change in the pitch, in particular with respect to the rotation of the spool core. This means that the ratio between the change in the laying position along the winding axis and the rotation of the spool core around the winding axis is, in particular, constant in some areas. The ratio can be specified in millimeters per degree or in millimeters per radian.

[0028] At the start of the winding process, the laying position or the laying axis can be located at a first end of the spool core. The first end is in particular arranged on the first side wall or half a shaped wire width away from it. This position can be referred to as the fictitious starting point of the first track. In a first winding step, the spool core can be rotated around the winding axis over a first angular range, with the laying position or the laying axis initially remaining unchanged. Subsequently, in a second winding step, during the rotation of the spool core over a second angular range, the laying position or the laying axis can be moved towards a second end of the spool core. The second winding step can also be referred to as laying activity. The second winding step ends in particular when the laying position has been moved by the shaped wire width.At the end of the second winding step, the first track, in particular, is wound. If the addition of the first and second angular ranges results in an angle of less than 360 degrees, this is referred to as a loose winding. If the addition of the first and second angular ranges results in an angle of greater than 360 degrees, this is referred to as a tight winding. The end point of the second winding step of the first track is referred to as the fictitious starting point of the second track. The alternating laying in the first and second winding steps is referred to as discontinuous laying.

[0029] Subsequently, the first winding step of the second track can be performed, followed by the second winding step of the second track. This occurs, in particular, until the laying position is at a second end of the coil core. The second end is, in particular, located at the second side wall or half a forming wire width away from it. The coil core can then be rotated further around the winding axis until the first layer is completely wound.

[0030] The second layer can then be wound up. First, in a first winding step, the coil core can be rotated around the winding axis over a first angular range while the laying position is kept constant. Subsequently, in a second winding step, the coil core can be rotated over a second angular range while the laying position is moved by the pitch, in particular the forming wire width, toward the first side wall. This can be done alternately until the laying position is at the first side wall and the second layer is wound up.

[0031] The remaining layers can then be wound up in the same way until the wire roll is wound up.

[0032] The winding parameters, in particular the first angular range and the second angular range, can be constant within a layer. The winding parameters, in particular the first angular range and the second angular range, can differ between two layers. For example, the first layer can have loose windings and the second layer can have fixed windings. Alternatively, the first layer can have fixed windings and the second layer can have loose windings. The third layer can have loose or fixed windings. The sum of the first and second angular ranges of the first layer can be less than 360 degrees. The sum of the first and second angular ranges of the second layer can be greater than 360 degrees. Alternatively, the sum of the first and second angular ranges of the first layer can be greater than 360 degrees. The sum of the first and second angular ranges of the second layer can be less than 360 degrees.

[0033] The change in the laying position relative to the rotation of the coil core can be greater or smaller in the second winding step of the second layer than in the second winding step of the first layer. In particular, the second angular range of the first layer can be greater or smaller than the second angular range of the second layer.

[0034] The winding parameters, especially the first and second angle ranges, are specifically adapted to the shaped wire being wound. This enables precise winding and subsequent unwinding. This is particularly important when winding shaped wire, as otherwise the individual tracks and layers become wedged, making subsequent unwinding difficult or even impossible.

[0035] The distance between the first side wall and the second side wall can be 50 millimeters. The forming wire width can be 5 millimeters. This allows for 10 tracks to be wound up, in particular. The laying position can be 2.5 millimeters from the first side wall in a minimum position and 2.5 millimeters from the second side wall in a maximum position. The laying area is then 45 millimeters, in particular. The pitch corresponds to 5 millimeters, in particular. After the winding process, a rear end of the forming wire can be secured by a holding element. The forming wire can then be cut off, in particular between the holding element and the guide system.

[0036] After the winding process, one or more hold-down devices attached to the first and / or second side wall can be folded out toward the opposite first or second side wall, respectively, and thereby brought into a folded-out position. The hold-down device can prevent the forming wire from unwinding. The hold-down device can be designed to exert a force toward the spool core. After strapping the wire coil, the hold-down device can be folded back into a stowed position.

[0037] The windings at the beginning of the winding process can be made looser than the subsequent windings. This can, in particular, facilitate the subsequent removal of the finished wire coil. The geometry of the coil core can be designed to facilitate the removal of the finished wire coil.

[0038] The winding of the formed wire onto the spool to form a wire coil can be carried out in a winding machine, particularly automatically. The method can include placing the spool onto the winding machine. The strapping of the wound wire coil with the strapping material can take place in the winding machine.

[0039] The method may further comprise removing the coil, including the wire coil wound thereon, from the winding device. Strapping the wound wire coil may take place outside the winding device, in particular in a strapping station.

[0040] The method may further include removing the wound wire coil from the spool. The empty spool can then be placed back on the winding device.

[0041] The method may comprise manually or automatically inserting the spool into a winding device. The method may comprise automatically feeding the strapping material to the spool, in particular via a feed track. The method may comprise automatically strapping the wire roll wound on the spool. The method may comprise automatically tensioning the strapping material. The method may comprise welding, in particular automatically welding, the strapping material. The method may comprise cutting, in particular automatically cutting, the strapping material. The method may comprise automatically rotating the spool, in particular by 90 degrees, to the next strapping point. The method may comprise automatically applying a label or inscription, in particular to the wire roll or the strapping material. The method may comprise automatically or manually removing a side wall of the spool.The method may include automatically or manually removing the strapped wire coil from the spool.

[0042] According to a second aspect, the invention relates to a method for strapping a wire coil wound on a spool. The method may additionally comprise winding the wire coil according to the first aspect of the invention. The method may comprise manual or automatic insertion of the spool into a strapping station. The method may comprise automatic feeding of the strapping material to the spool, in particular via a feed track. The method may comprise automatic strapping of the wire coil wound on the spool. The method may comprise automatic tensioning of the strapping material. The method may comprise welding or gluing, in particular automatic welding or gluing, of the strapping material. The method may comprise cutting, in particular automatic cutting, of the strapping material. The method may comprise automatic rotation of the spool, in particular by 90 degrees, to the next strapping point.The method may include the automatic application of a label or inscription, in particular to the wire coil or the strapping material. The method may include the automatic or manual removal of a side wall of the coil. The method may include the automatic or manual removal of the strapped wire coil from the coil. The method may include method steps of the method according to the first aspect of the invention. The coil may be configured according to the third aspect of the present invention.

[0043] The strapping station may comprise one, two, three, or four strapping devices. The method may comprise strapping the wire coil at the strapping stations. The method may comprise transporting the strapped wire coil, in particular without a spool, to a second strapping station. The method may comprise strapping the wire coil in the second strapping station. This makes it possible to strap the wire coil more than four times.

[0044] Alternatively, the wire coil can be wound onto a coil base of the winding device. The wound wire coil can be transported from the winding device to the strapping station by an automated gripper, such as a robot. The automated gripper can be configured to secure the beginning and / or end of the formed wire of the wire coil, particularly during transport to the strapping station.

[0045] According to a third aspect, the invention relates to a spool for winding shaped wire, in particular a clip strand. The spool comprises a cylindrical base body extending along an axis from a first end to a second end, hereinafter also referred to as the spool base body or spool core. The spool further comprises a first side wall extending from the first end of the base body. The first side wall can be connected to the base body or attached thereto. The first side wall has at least one recess. The at least one recess in the first side wall extends substantially in a radial direction of the base body. The spool is formed in several parts.

[0046] The reel can be a transfer reel, in particular a transfer take-up reel and / or a transfer pay-off reel. A transfer take-up reel can be used, in particular, to wind the forming wire in a winding device and then transport it on the transfer take-up reel to a strapping device. A transfer pay-off reel can be used, in particular, to receive a strapped wire reel and then insert it, together with the transfer pay-off reel, into an pay-off device. The transfer take-up reel can be structurally identical to the transfer pay-off reel.

[0047] The coil may further comprise a second side wall extending from the second end of the base body. The second side wall may be connected to or attached to the base body. The second side wall may have at least one recess. The at least one recess of the second side wall may extend substantially in a radial direction of the base body.

[0048] The at least one recess in the first side wall and the at least one recess in the second side wall can simplify strapping a wire wound on the coil. The recesses allow strapping material to be passed between the base body and the wound wire, the so-called wire coil.

[0049] The base body can have an elliptical or circular cross-section. The base body can have a polygonal cross-section. The two side walls are spaced apart from each other and can form a free space for winding wire around the base body. The side walls can prevent the wound wire from slipping sideways off the base body. The extension of the base body along the axis can be larger, in particular many times larger, than the extension of the first and second side walls along this axis.

[0050] The first side wall can be removable from the base body. Alternatively or additionally, the second side wall can be removable from the base body. The base body can be designed to be separable. The base body can be separable into a first part and a second part along the axis. The first part of the base body can comprise the first end of the base body. The second part of the base body can comprise the second end of the base body. The first side wall and / or the second side wall can be designed in multiple parts.

[0051] The base body may have at least one recess extending substantially parallel to the axis. The at least one recess of the base body may be formed as a channel, notch, or groove.

[0052] The at least one recess of the base body can be aligned with the at least one recess of the first and second side walls. The base body can be designed to be rotatable relative to the first and second side walls, such that the at least one recess of the base body can be aligned with the at least one recess of the first and second side walls. The first side wall can be designed to be rotatable relative to the base body. The second side wall can be designed to be rotatable relative to the base body. The first and / or the second side wall can be connected to the base body in a rotationally fixed manner or attached thereto.

[0053] The at least one recess in the first side wall and the at least one recess in the second side wall can be aligned with each other such that a second axis extends parallel to the axis of the base body through the at least one recess in the first side wall and the at least one recess in the second side wall. If the first and second side walls have multiple recesses, the multiple recesses in the first side wall can be aligned with the multiple recesses in the second side wall.

[0054] The at least one recess in each of the first and second side walls can extend to an outer edge of the respective side wall. Such a configuration can further simplify strapping.

[0055] The first side wall can have at least two, preferably at least three, preferably at least four recesses. The second side wall can have at least two, preferably at least three, preferably at least four recesses. This allows strapping at two, three, or four points of the wound wire. The recesses of the first side wall can be evenly spaced from one another. The recesses of the second side wall can be evenly spaced from one another. The first side wall and the second side wall can have the same number of recesses.

[0056] The first side wall can be designed as a circular disc. The center point of the first side wall can be on the axis of the base body. The second side wall can be designed as a circular disc. The center point of the second side wall can be on the axis of the base body.

[0057] The at least one recess in the first side wall can extend across the entire wall thickness of the first side wall. The at least one recess in the second side wall can extend across the entire wall thickness of the second side wall.

[0058] In such a case, the recesses represent slots or elongated holes. The slots can allow the strapping material to pass laterally between the base body and the wire reel, in particular through the at least one recess in the base body. The strapping material can be guided through the recesses from one side of the reel in the axial direction of the base body to the other side of the reel.

[0059] The at least one recess in the first side wall can extend only over a portion of the wall thickness of the first side wall. The at least one recess in the second side wall can extend only over a portion of the wall thickness of the second side wall. In such a case, the recesses represent channels, notches, or grooves. The at least one recess in the first side wall can be arranged in a side surface of the first side wall facing the second side wall. The at least one recess in the second side wall can be arranged in a side surface of the second side wall facing the first side wall. The recesses can represent guide channels.

[0060] The at least one recess in each of the first and second side walls can extend over the entire wall thickness of the respective side wall, for example in the form of a slot or elongated hole. At least one cover can be attached to a side surface of the first side wall, in particular the side surface facing away from the second side wall, in the region of the at least one recess. The cover can, in combination with the at least one recess, represent a channel, a notch, or a groove. At least one cover can be attached to a side surface of the second side wall, in particular the side surface facing away from the first side wall, in the region of the at least one recess. The cover can, in combination with the at least one recess, represent a channel, a notch, or a groove.

[0061] The coil core may have a non-slip coating. The first side wall may have a non-slip coating. The second side wall may have a non-slip coating. The recesses may be free of the non-slip coating.

[0062] The strapping material can initially be guided through a recess in the first side wall between the first side wall and the wire reel wound on the base body. The recess provides a free space which simplifies the guiding of the strapping material between the side wall and the wire reel. Because the recess is not formed over the entire wall thickness of the side wall or the recess is laterally delimited by a cover, the strapping material cannot escape laterally. At the inner end of the first side wall, the strapping material can be deflected into the at least one recess in the base body. The deflection of the strapping material can be achieved by a rounded portion or chamfer at the end of the recess in the first side wall. The strapping material can then be guided through the recess in the base body between the base body and the wire reel.The strapping material can then be guided into the recess in the second side wall. In the recess in the second side wall, it can be deflected again by a fillet or bevel. The first side wall can have a fillet or bevel at one end, in particular at the inner end, of the at least one recess. The second side wall can have a fillet or bevel at one end, in particular at the inner end of the at least one recess. The strapping material can then be guided through the recess in the second side wall between the second side wall in the wire reel. Alternatively, the strapping material can also be guided in the opposite direction between the reel and the wire reel. The at least one recess in each of the first side wall, the second side wall and the base body can form at least one continuous guide channel for the strapping material.

[0063] The coil can be designed to be placed on a winding device. The coil can be designed to be rotationally fixedly coupled to the winding device. The coil can be aligned vertically on the winding device. This means that the axis of the base body runs horizontally. The coil can be aligned horizontally on the winding device. This means that the axis of the base body runs vertically. The coil can be aligned obliquely on the winding device.

[0064] The base body may include a recess or projection. The recess or projection can temporarily hold the forming wire, particularly during the winding process.

[0065] The reel can be used not only for winding wire, but also for unwinding wire. For example, a wire can be wound and strapped onto a winding reel configured according to the preceding paragraphs.

[0066] The wound and strapped wire can then be removed from the take-up reel and transported to a supply reel. The supply reel can be constructed identically to the take-up reel. The supply reel can have any combination of the features of the take-up reel described in the previous paragraphs. The strapped wire can then be placed on the supply reel and unwound after the strapping is removed.

[0067] The supply spool does not have to be structurally identical to the take-up spool. For example, the supply spool can consist of a spool core and a side wall. In addition, the supply spool can have a second removable side wall. The supply spool can be arranged at an angle to the horizontal during unwinding so that the wound wire cannot slip off the spool core. In the simplest case, the supply spool can also comprise just a spool core or a mandrel. The supply spool can be inserted into a unwind cassette. The spool core or mandrel can be arranged at an angle to the horizontal. The spool core or mandrel can be adjacent at one end to an external boundary surface, for example a wall or a machine, to prevent the wound wire from slipping off.The supply spool, especially the spool core or mandrel, can have a non-slip coating. This can prevent or inhibit the wound wire from slipping.

[0068] The spool, in particular the supply spool, can have one or more sensors, for example camera sensors. A controller can be configured to check the authenticity or originality of the formed wire based on the data transmitted by the sensors. A controller can be configured to check the geometry of the formed wire based on the data transmitted by the sensors. The spool core can be hollow. The hollow spool core can be placed on a base body of a winding device, a machine for winding formed wire, and / or a strapping station. The spool can comprise a transponder, in particular an RFID chip. The transponder can be arranged on the spool core, in particular on an inner side of the spool core. Alternatively or additionally, a barcode or a QR code can be applied to the spool, in particular to the first side wall, the second side wall, or the spool core.Alternatively or additionally, a barcode or QR code can be attached to the wound wire coil, for example, on the outer or inner diameter of the wire coil, on the outside or inside of the wire coil, or on the strapping material. Alternatively or additionally, an RFID chip, particularly in the form of a label, can be attached to the wound wire coil, for example, on the outer or inner diameter of the wire coil, on the outside or inside of the wire coil, or on the strapping material.

[0069] The coil may comprise one or more hold-down devices. The hold-down device may be arranged on the first and / or second side wall, in particular on a radially outer end of the first and / or second side wall. The hold-down device may be designed to be foldable, in particular toward the opposite first or second side wall. The hold-down device may be designed to be moved from a stowed position to a folded-out position. The hold-down device may be designed to fix the wound forming wire in the folded-out position.

[0070] The reel may have two, three, four, or more hold-down devices. The hold-down devices may be arranged circumferentially along the first and / or second sidewall.

[0071] According to a fourth aspect, the invention relates to a machine for winding and / or unwinding shaped wire, in particular a strand of clips. The machine comprises a winding device and / or an unwinding device. The unwinding device is in particular structurally identical to the winding device. In the following, the term winding device is used as a synonym for both the winding device and the unwinding device. The winding device comprises a cylindrical base body extending along an axis. The winding device comprises a first side wall attached to the base body. The winding device further comprises a second side wall. The second side wall is designed to be movable between a first position and a second position. The base body, the first side wall and the second side wall each have at least one recess.In the first position, the second side wall is spaced apart from the base body. In the second position, the at least one recess in the second side wall, together with the at least one recess in the base body and the at least one recess in the first side wall, forms a continuous guide channel.

[0072] The machine may include a strapping device. The strapping device may be configured to guide a strapping material through the at least one guide channel and thus strap a wire coil wound on the base body.

[0073] The base body can be mounted for rotation about the axis. The base body can be driven by a shaft. The machine can include a motor for rotating the base body about the axis.

[0074] The at least one recess in the first side wall, the second side wall, and the base body can be designed as a notch, channel, or groove. The recesses can extend only over part of the wall thickness of the first and second side walls. The at least one recess in the first side wall can be arranged in a side surface of the first side wall facing the second side wall. The at least one recess in the second side wall can be arranged in a side surface of the second side wall facing the first side wall. This configuration makes it possible to pass a strapping material through the recesses between the wound wire and the coil, in particular the side walls of the coil.

[0075] The at least one recess in each of the first and second side walls can extend over the entire wall thickness of the respective side wall, for example in the form of a slot or elongated hole. At least one cover can be attached to a side surface of the first side wall, in particular the side surface facing away from the second side wall, in the region of the at least one recess. The cover can, in combination with the at least one recess, represent a channel, a notch, or a groove. At least one cover can be attached to a side surface of the second side wall, in particular the side surface facing away from the first side wall, in the region of the at least one recess. The cover can, in combination with the at least one recess, represent a channel, a notch, or a groove.

[0076] The first side wall can be attached to a first end of the base body. The first side wall can be connected to the base body. The first side wall can be one-piece with the base body. The second side wall can be adjacent to the base body in the second position. The second side wall can be temporarily coupled to the base body in the second position, in particular temporarily coupled in a rotationally fixed manner. This allows the second side wall to rotate together with the base body in the second position. The at least one recess in the second side wall can be aligned with the at least one recess in the base body before coupling. Due to the rotationally fixed coupling, the recesses remain aligned during the winding process. This allows a wire roll wound around the spool to be strapped immediately after completion of the winding process.In the second position, the second side wall can be coupled to the base body at least indirectly and temporarily in a rotationally fixed manner. The coupling can be achieved, for example, by means of an intermediate piece.

[0077] The second side wall can be magnetically connected to the base body in the second position.

[0078] The first side wall can be constructed in multiple parts. The second side wall can be constructed in multiple parts. The base body can be constructed in multiple parts.

[0079] The base body can represent a first base body. The second side wall can be attached to a second base body or be integral with it. The second base body can be designed to be movable together with the second side wall between a first and second position. In the first position, the second base body is spaced apart from the first base body.

[0080] In one embodiment, the first side wall can have only one recess. In one embodiment, the second side wall can have only one recess. The base body can have at least two, in particular at least three, in particular at least four recesses. The base body can be designed to be rotatable about the axis. The first side wall can be designed to be stationary or at least decoupled from a rotation of the base body. In the second position, the second side wall can be decoupled at least from the rotation of the base body. During the winding process, the base body can rotate and thus the wire can be wound onto the spool. The two side walls serve as lateral boundaries to prevent the wound wire from slipping sideways. The recess in the first side wall can be aligned with the recess in the second side wall.After the winding process is complete, the base body can be rotated until a first recess in the base body is aligned with the recess in the first side wall and the recess in the second side wall. The first recess in the base body can then form a continuous guide channel with the recess in the first side wall and the recess in the second side wall. The strapping device can guide or send a strapping material through the continuous guide channel and produce a first strapping of the wire roll. The base body can then be rotated until a second recess in the base body is aligned with the recess in the first side wall and the recess in the second side wall. The second recess in the base body can then form a continuous guide channel with the recess in the first side wall and the recess in the second side wall.The strapping device can guide or send a strapping material through the continuous guide channel and create a second strapping of the wire coil. The same procedure can also be used for a possible third and fourth recess in the base body to create a third and fourth strapping, respectively.

[0081] At least one of the first and second base bodies can be hollow. The hollow base body can be configured to receive the other of the first and second base bodies in the second position. The second base body can be rotationally fixedly coupled to the first base body in the second position.

[0082] The strapping device may comprise a roll with wound strapping material. The strapping device may comprise a guide device for guiding the strapping material to the recesses in the side walls. The guide device may be configured to send the strapping material through the at least one guide channel in the reel. The strapping device may comprise a means for severing the strapping material, for example a knife. The strapping device may comprise a means for connecting two ends of the strapping material. This allows two ends of the strapping material to be closed after being passed between the wire reel and the reel, thus forming a closed ring around part of the wire reel. The closed ring may prevent the wire reel from unintentionally unwinding.

[0083] The side walls can extend largely vertically. The axis of the base body can run horizontally. The side walls can extend largely horizontally. The axis of the base body can run vertically.

[0084] The machine may include multiple winding devices. The machine may include multiple strapping devices. The machine may be configured to move the second side wall between the first position and the second position. The machine may be configured to rotate the second side wall about the axis of the base body.

[0085] In an alternative embodiment according to a fifth aspect of the invention, the winding device of the machine comprises the cylindrical base body extending along the axis. In comparison to the fourth aspect of the invention, the first side wall and the second side wall in this embodiment are not part of the machine, but are formed by the spool according to the third aspect of the invention. In particular, the cylindrical base body can be designed to receive and / or fix the spool, in particular the spool core. The machine can be designed to rotate the spool by rotating the base body. In particular, the base body of the machine can be non-positively connected to the spool core. The machine can comprise the strapping device described within the framework of the fourth aspect of the invention.

[0086] The following paragraphs refer to both embodiments of the machine, i.e. the machine according to the fourth and fifth aspects of the invention.

[0087] The machine can comprise a guide system. The guide system can be designed to guide the forming wire to the spool or to the base body or to align the forming wire with the spool or the base body. The guide system can be designed to be movable in the vertical and / or horizontal direction. The guide system can be designed to be movable in the direction of the axis of the spool or the base body. The guide system can be designed to guide the forming wire, in particular a front end of the forming wire, to the spool or the base body, in particular tangentially to the spool or the base body.

[0088] The machine can have a holding mechanism. The holding mechanism can be designed to hold the forming wire, in particular the front end, in position, in particular after the forming wire has been guided to the spool or the base body with the aid of the guide system. The holding mechanism can be designed to fix the forming wire, in particular the front end, relative to the spool or the base body. The holding mechanism can be designed to rotate together with the spool or the base body. The first side wall and / or the second side wall of the spool or the machine can have an opening. The holding mechanism can be designed to engage into the forming wire, in particular the front end, through the opening in the first and / or second side wall and to fix it.

[0089] The machine can have a first drive, in particular a first servo drive. The first drive can be configured to enable precise feeding of the forming wire to the holding mechanism. The first drive can be configured to feed the forming wire to the spool, the machine, or the holding mechanism. The first drive can be configured to move the guide system in a tangential direction relative to the spool core or the base body. The first drive can be configured to move the guide system toward and / or away from the spool core or the base body.

[0090] The machine can have a second drive, in particular a second servo drive. The second drive can be configured to move the guide system in a direction parallel to the axis of the coil core or the base body. The second drive can be configured to move the laying position or the laying axis, in particular between a first end and a second end of the base body or coil core. The second drive can be configured to move the laying position or the laying axis between the first side wall and the second side wall.

[0091] The machine can have a third drive, in particular a third servo drive. The third drive can be designed to move the guide system in a direction orthogonal to the axis of the spool core or base body and / or vertically. This makes it possible to adjust the angle of attack of the forming wire to the spool, base body or wire reel. The angle of attack is in particular the angle between the fed forming wire and the tangential direction of the spool core or base body at the point at which the forming wire meets the spool core, base body or wire reel. The third drive can be designed to vary, in particular to control, the angle of attack of the forming wire. The machine can have a control unit. The control unit can be designed to control the angle of attack of the forming wire.

[0092] During the winding process, the outer radius of the wire coil increases. The third drive allows the position of the guide system to be adjusted to the current outer radius of the wire coil. This allows the angle of the forming wire to be kept constant. In particular, the forming wire can always be fed tangentially to the coil core, the base body, or the wire coil. The machine can have a fourth drive, in particular a fourth servo drive. The fourth drive can be designed to rotate the base body around the axis of the base body. This allows the forming wire to be wound onto the base body.

[0093] The machine may include a control unit. The control unit may be configured to control the fourth drive to rotate the coil core or the base body, in particular around the winding axis.

[0094] The control unit can be designed to control the second drive in order to keep the position of the guide system constant during a first winding step. The control unit can be designed to control the second drive in order to move the guide system in the direction of the first side wall or second side wall during a second winding step. The control unit can be designed to control the first drive in order to rotate the spool core about the winding axis during the winding step and the second winding step. The control unit can be designed to control the second drive in order to adapt or control the change in the position of the guide system in the second winding step with respect to the rotation about the winding axis.

[0095] The machine may comprise a holding element, in particular a pressure brush. The holding element may be designed to hold a rear end of the forming wire, in particular after the winding process, in order to prevent the forming wire from unwinding. The holding element may be designed to be extendable in the radial direction of the base body.

[0096] The reel or the machine can comprise a hold-down device. The hold-down device can be arranged on the first and / or second side wall, in particular on a radially outer end of the first and / or second side wall. The hold-down device can be designed to be foldable, in particular toward the opposite first or second side wall. The hold-down device can be designed to be moved from a stowed position to a folded-out position. The hold-down device can be designed to fix the wound forming wire in the folded-out position.

[0097] The reel or machine can have two, three, four, or more hold-down devices. The hold-down devices can be arranged circumferentially along the first and / or second side wall. Alternatively or in addition to the hold-down devices, other fixing elements, such as clips, clamps, or hooks, can be used. The first side wall, the second side wall, and the hold-down devices can keep the forming wire dimensionally stable until strapping. After strapping, the hold-down devices can be returned to their stowed position.

[0098] The machine can be designed to continuously adjust the winding parameters, such as the angle of attack, winding pressure and / or the change in the laying position relative to the rotation around the winding axis. The machine can comprise a controller. The controller can be designed to control the winding parameters, such as the angle of attack, winding pressure and / or the change in the laying position relative to the rotation around the winding axis. The machine can be designed to make the windings at the beginning of the winding process looser or tighter compared to subsequent windings of the same winding process. The machine can be designed to make the windings of the first layer looser or tighter compared to the windings of the subsequent layers of the same winding process. In particular, this can simplify the removal of the wire reel from the base body or spool core.

[0099] The machine may include a braking device. The braking device may be designed to brake, in particular to stop, the forming wire.

[0100] The machine, in particular a control unit of the machine, can be designed to stop the winding process at a point such that the loose forming wire end is located near a strapping device or strapping position, in particular within 50 millimeters, in particular 20 millimeters, in particular 10 millimeters, in particular 5 millimeters of the strapping device or strapping position.

[0101] According to a sixth aspect, the invention relates to a strapping station. The strapping station is designed to receive a spool, in particular the spool according to the third aspect of the invention, in particular including a wire reel already wound thereon. The strapping station can be designed to automatically feed strapping material to the spool, in particular via a feed track. The strapping station can be designed such that the spool core of a spool received in the strapping station extends in the vertical direction. The strapping station can be designed such that the spool core of a spool received in the strapping station extends in the horizontal direction.

[0102] The strapping station can be designed to strap the wire roll wound on the spool, in particular to strap it automatically. The strapping station can be designed to tension the strapping material, in particular to tension it automatically. The strapping station can be designed to weld the strapping material, in particular to weld it automatically. The strapping station can be designed to cut the strapping material, in particular to cut it automatically. The strapping station can be designed to rotate the spool to the next strapping point, in particular automatically. The strapping station can be designed to apply a label or inscription, in particular to apply it automatically, in particular to the wire roll or the strapping material. The strapping station can be designed to remove or fold away a side wall of the spool.The strapping station can be designed to remove the strapped wire roll from the spool, in particular to remove it automatically.

[0103] The strapping station may comprise one, two, three, or four strapping devices. The strapping devices may be configured to strap the wire coil at one strapping position.

[0104] According to a seventh aspect, the invention relates to a system for winding shaped wire. The system comprises the reel for winding shaped wire according to the third aspect of the invention and the machine for winding shaped wire according to the fourth or fifth aspect of the invention. The system may further comprise the strapping station according to the sixth aspect of the invention.

[0105] The method according to the first aspect of the invention can be combined with method steps of the method according to the second aspect of the invention. The method according to the second aspect of the invention can be combined with method steps of the method according to the first aspect of the invention. The method according to the first or second aspect of the invention can be carried out with a reel according to the third aspect of the invention. The method according to the first or second aspect of the invention can be carried out with a machine according to the fourth and / or fifth aspect of the invention. The method according to the first or second aspect of the invention can be carried out with a strapping station according to the sixth aspect of the invention. The reel according to the third aspect of the invention can be used with method steps of the methods according to the first and / or second aspect of the invention.The machine according to the fourth or fifth aspect of the invention can be used with method steps of the methods according to the first and / or second aspect of the invention. The strapping station according to the sixth aspect of the invention can be used with method steps of the methods according to the first and / or second aspect of the invention. The terms "first," "second," "third," and "fourth" are merely designations for a specific element or component and do not necessarily indicate a particular order or arrangement of said components or elements. For example, the presence of a fourth element / component does not necessarily imply the presence of a first, second, or third element / component, and vice versa.

[0106] In the following, advantageous embodiments of the invention are explained in more detail with reference to the attached figures.

[0107] Figure 1 shows a schematic diagram of a clip production line.

[0108] Figure 2 shows a perspective view of a coil according to an embodiment of the invention.

[0109] Figure 3 shows a schematic representation of the base body of the coil from Fig. 1.

[0110] Figure 4 shows a perspective view of a strapped wire coil.

[0111] Figure 5 shows a perspective view of a winding device and a spool according to an embodiment of the invention.

[0112] Figure 6 shows a perspective view of a machine according to an embodiment of the invention.

[0113] Figure 7 shows a plan view of the machine from Fig. 6 in a second position.

[0114] Figure 8 shows a plan view of the machine of Fig. 6 in a first position.

[0115] Figure 9 shows a detailed view of the coil from Fig. 2.

[0116] Figure 10 shows a detailed view of the machine from Fig. 6.

[0117] Figure 11 shows a strapping station according to the invention.

[0118] Fig. 1 shows a schematic diagram of a clip production line 1. The clip production line 1 comprises base material spools 2. Round wire 3 is wound onto the base material spools 2. The round wire 3 is unwound from the base material spools 2 and fed to a rolling mill 4. In the rolling mill 4, the round wire 3 is formed into a flat wire 5. The terms round and flat refer to the cross-sectional shape of the wire. The flat wire 5 is then fed to a press 6. In the press 6, a formed wire 7 is formed from the flat wire 5. The formed wire 7 has the shape of a clip strand. The clip strand comprises several clip profiles arranged in a row. The formed wire 7 is then wound onto spools 9 in winding devices 8. Fig. 1 shows more coils 9 than strands of forming wires 7. This means that while a wound forming wire 7 is being strapped, the remaining forming wire 7 can be wound onto a second coil 9.

[0119] Fig. 2 shows a spool 9 according to the invention for winding shaped wire 7. The spool 9 comprises a base body 10, a first side wall 11, and a second side wall 12. The base body 10 is designed as a hollow cylinder and extends along the axis 100. The first 11 and second side wall 12 are fastened to the base body 10 with fastening elements 13. The first side wall 11 comprises four recesses 14 in the form of slots 34. The second side wall 12 also comprises four recesses 14 in the form of slots 34. The recesses 14 of the first side wall 11 are aligned with the recesses 14 of the second side wall 12. The recesses 14 of the first side wall 11 extend to an outer end 15 of the first side wall 11.

[0120] The recesses 14 of the second side wall 12 extend to an outer end 16 of the second side wall 12.

[0121] Fig. 3 shows a schematic representation of the base body 10 from Fig. 2. The base body 10 has four recesses 17. The recesses 17 of the base body 10 represent a guide channel 33. The recesses 17 of the base body 10 are aligned with the recesses 14 of the side walls 11, 12.

[0122] Fig. 2 also shows a formed wire 7 wound onto the spool 9 to form a wire coil 18. The wire coil 18 is strapped at four points with a strap 19. The straps 19 prevent the formed wire end 20 from unintentionally unwinding from the wire coil 18. The straps 19 are attached at the locations of the recesses 14, 17 of the spool 9. The straps 19 run between the base body 10 and the wire coil 18.

[0123] Fig. 4 shows the wire coil 18 removed from the spool 9. The four straps 19 secure the formed wire end 20 and prevent the formed wire 7 from being unwound unintentionally. The wire coil 18 can thus be transported and shipped without the spool 9. The wire coil 18 forms a free space 32 in the center of the wire coil 18. The center of gravity of the wire coil 18 is located in this free space 32. The straps 19 are guided through the free space 32. The formed wire 7 shown in Fig. 4 has a typical clip strand shape.

[0124] The shaped wire 7 can be wound manually or mechanically around the spool 9 shown in Fig. 2 to form a wire roll 18. According to one embodiment of the invention, the shaped wire 7 is wound onto the spool 9 by means of a winding device 8. A winding device 8 according to the present invention is shown in Fig. 5. In Fig. 5, the spool 9 is placed on a holder 21 in the form of a cylinder and is rotationally fixedly coupled to the holder 21. The holder 21 is rotatably mounted in the winding device 8. The spool 9 is oriented vertically. According to an alternative embodiment, the spool 9 can also be oriented horizontally. As an alternative to the embodiment of the spool 9 shown in Fig. 2, the spool 9 can only comprise a first side wall 11. The second side wall 12 is then provided by the winding device 8.

[0125] The holder 21 is driven by a motor 28. By rotating the holder 21, the formed wire 7 is wound onto the spool 9. Fig. 5 shows the wire spool 18 after winding onto the spool 9. The wire spool 18 has already been separated from the remaining formed wire 7. The formed wire end 20 of the wire spool 7 is not yet secured by a strap 19.

[0126] Fig. 6 shows a machine 22 according to the invention for winding shaped wire 7. The machine 22 comprises a winding device 8 and a strapping device 23. The winding device 8 comprises a base body 10 (not visible in Fig. 6), a first side wall 11 and a second side wall 12. The combination of base body 10 and first side wall 11 or the combination of base body 10, first side wall 11 and second side wall 12 is also referred to as coil 9.

[0127] The second side wall 12 is attached to a movable arm 24. The movable arm 24 engages a guide rail 25 and can be moved along the guide rail 25. The second side wall 12 can thus be moved between a first position and a second position.

[0128] Fig. 7 shows a top view of the machine 22 in Fig. 6. The wound wire coil 18 is hidden in Fig. 7 to illustrate the machine 22. The base body 10 extends along the axis 100. The side wall 12 is in the second position in Fig. 7. The recesses 14 of the first and second side walls 11, 12 are designed as elongated holes, which are formed into guide channels 33 by covers 26 on the respective outer sides of the first and second side walls 11, 12. When the second side wall 12 is in the second position, the recesses 14 of the first and second side walls 11, 12, in combination with the recesses 17 of the base body 10, form continuous guide channels 33.

[0129] The second side wall 12 is attached to a second base body 27. The second base body 27 is attached to the movable arm 24 and can be engaged and coupled to the base body 10. The movable arm 24 can be moved along the guide rail 25 in a direction orthogonal to the axis 100. At least parts of the movable arm 24, and thus the second side wall 12 and the second base body 27, can be moved in a direction parallel to the axis 100. This enables the engagement of the base body 10 with the second base body 27. The machine 22 further comprises a motor 28 for driving the base body 10.

[0130] Fig. 8 shows a top view of the machine 22 in Fig. 6. The second side wall 12 is in the first position. Fig. 8 shows a wire reel 18 wound onto the base body 10, which is strapped with straps 19. Since the second side wall 12 is in the first position, the wire reel 18 can be removed laterally from the base body 10. The strapping device 23 shown in Fig. 8 comprises a reel 29 with strapping material 30 and a guide device 31. The guide device 31 is designed to guide the strapping material 30 into the guide channels 33 formed by the recesses 14.

[0131] Fig. 9 shows a detailed view of the spool 9 in Fig. 2. A hold-down device 35 is attached to the second side wall 12. The hold-down device 35 can be moved between a stowed position and a folded-out position. In Fig. 9, the hold-down device 35 is shown in the folded-out position. In the folded-out position, the hold-down device 35 prevents the wound forming wire from unwinding. This allows the spool 9, including the wound forming wire 7, to be removed from the winding device 8 before the wire roll 18 is strapped. The spool 9 can have several hold-down devices 35. The hold-down devices 35 can be attached to the first side wall 11 alternatively or additionally.

[0132] Fig. 10 shows a detailed view of the machine 22 in Fig. 6 or of a spool 9 mounted on the winding device 8 in Fig. 5 or the machine in Fig. 6. For clarity, the second side wall 12 is not shown. The formed wire 7 is fed to the spool 9 or the machine 22 by means of a guide system 36. The guide system 36 is shown only schematically. The machine 22 or the winding device 8 comprises a first drive 37, a second drive 38, a third drive 39, and a fourth drive 40. The drives are shown only schematically.

[0133] The first drive 37 can be designed to feed the forming wire 7. The first drive 37 can be designed to move the guide system 36 in the tangential direction relative to the base body 10. The second drive 38 is designed to move the guide system 36 parallel to the axis of the base body 10. The third drive is designed to move the guide system 36 in the radial direction of the base body 10 or vertically. The fourth drive 40 is designed to rotate the base body 10. The first side wall 11 has an opening 41. The machine 22 or the winding device 8 has a holding mechanism 42. The holding mechanism 42 is designed to move through the opening 41 and engage in the forming wire 7. The holding mechanism 42 is designed to fix the forming wire 7 relative to the base body 10. At the beginning of the winding process, the holding mechanism 42 engages in the forming wire 7.Subsequently, the base body 10, the first side wall 11 and the holding mechanism 42 can be rotated about the axis of the base body 10 by the fourth drive 40.

[0134] Fig. 11 shows a strapping station 43 according to the invention. The strapping station 43 is designed to receive a wire reel 18 wound on a spool 9. The strapping station 43 comprises a plurality of strapping devices 23. The strapping devices 23 are aligned with the recesses 14 of the first side wall 11 and / or second side wall 12. Alternatively, the strapping station 43 can comprise only one or two strapping devices 23. The spool 9 can then be rotated manually or automatically by the strapping station 43 in order to align the recesses 14 one after the other with the strapping device 23. The strapping device 23 is designed to pass the strapping material 30 between the base body 10 and the wire reel 18 and to strap the wire reel 18. The strapping device 23 is designed to tension the strapping material 30.The strapping device 23 is designed to weld the strapping material 30 to produce a strap 19. The strapping device 23 is designed to cut off the remaining strapping material 30. The strapping station 43 can be designed to rotate the spool 9 to align a further recess 17 with a strapping device 23. The strapping station 43 can be designed to apply a label or inscription to the wire spool 18 or a strap 19. The strapping station 43 can be designed to remove the first side wall 11 or the second side wall 12 of the spool 9 or to fold it aside. The strapping station 43 can be designed to remove the strapped wire spool 18 from the spool 9. In Fig. 11, the strapping station is arranged horizontally. A vertical arrangement is also possible.

Claims

Claims 1. Method for winding shaped wire (7), in particular a clip strand, comprising - Providing a forming wire (7), - feeding the forming wire (7) to a coil (9), - Winding the forming wire (7) onto the spool (9) to form a wire reel (18), and - strapping the wire roll (18) wound around the coil (9) with a strapping material (30), wherein the strapping material (30) is passed between the coil (9), in particular a cylindrical base body (10) of the coil (9), and the wire roll (18).

2. Method according to claim 1, wherein the strapping material (30) is guided around the wound wire roll (18) through recesses (14, 17), in particular guide channels (33) or slots (34), in the coil (9).

3. Method according to claim 1 or 2, wherein the strapping material (30) is guided at least once through a free space (32) formed by the wire roll (18) in the center of gravity of the wire roll (18).

4. Method according to one of the preceding claims, wherein the strapping takes place essentially in the radial direction and axial direction of a base body (10) of the coil (9).

5. Method according to one of the preceding claims, wherein the strapping takes place at at least two points, preferably at least three points, preferably at least four points of the wire roll (18) wound around the spool (9).

6. Method according to one of the preceding claims, wherein the winding of the forming wire (7) takes place in a winding device (8) and the coil (9) is a separate component.

7. Method according to one of claims 1 to 5, wherein the winding of the forming wire (7) takes place in a winding device (8) and the coil (9) is part of the winding device (8).

8. Reel (9) for winding shaped wire (7), in particular a clip strand, comprising a cylindrical base body (10) extending along an axis (100) from a first end to a second end, a first side wall (11) extending from the first end of the base body (10), wherein the first side wall (11) has at least one recess (14), wherein the at least one recess (14) of the first side wall (11) extends substantially in a radial direction of the base body (10), and wherein the coil (9) is formed in several parts.

9. The coil of claim 8, further comprising a second side wall (12) extending from the second end of the base body (10), wherein the second side wall (12) has at least one recess (14), and wherein the at least one recess (14) of the second side wall (12) extends substantially in a radial direction of the base body (10).

10. Coil according to claim 8 or 9, wherein at least one of the first side wall (11) and the second side wall (12) is designed to be removable from the base body (10) and / or the base body (10) is designed to be disassembled.

11. Coil according to one of claims 8 to 10, wherein the base body (10) has at least one recess (17) extending substantially parallel to the axis (100), wherein the at least one recess (17) of the base body (10) is aligned or alignable with the at least one recess (14) of the first (11) and second side wall (12).

12. Coil according to one of claims 8 to 11, wherein the at least one recess (14) of the first side wall (11) extends over the entire wall thickness of the first side wall (11) and the at least one recess (14) of the second side wall (12) extends over the entire wall thickness of the second side wall (12).

13. Coil according to one of claims 8 to 11, wherein the at least one recess (14) of the first side wall (11) extends only over a part of the wall thickness of the first side wall (11) and the at least one recess (14) of the second side wall (12) extends only over a part of the wall thickness of the second side wall (12).

14. Machine (22) for winding forming wire (7), in particular a clip strand, comprising a winding device (8), the winding device (8) comprising a cylindrical base body (10) extending along an axis (100), a first side wall (11) attached to the base body (10), and a second side wall (12) movable between a first position and a second position, wherein the base body (10), the first side wall (11) and the second side wall (12) each have at least one recess (14, 17), wherein the second side wall (12) is spaced from the base body (10) in the first position, wherein in the second position of the second side wall (12) the at least one recess (14) of the second side wall (12) together with the at least one recess (17) of the base body (10) and the at least one recess (14) of the first side wall (11) forms at least one continuous guide channel (33).

15. Machine according to claim 14, further comprising a strapping device (23), wherein the strapping device (23) is designed to guide a strapping material (30) through the at least one continuous guide channel (33) and thus to strap a wire roll (18) wound on the base body (10).

16. Machine according to claim 14 or 15, wherein the at least one recess (14, 17) of the first side wall (11), the second side wall (12) and the base body (10) is designed as a channel, notch or groove.

17. Machine according to one of claims 14 to 16, wherein the first side wall (11) is rotationally fixedly coupled to the base body (10) or is integral with the base body (10).

18. Machine according to one of claims 14 to 17, wherein the second side wall (12) in the second position can be coupled at least indirectly in a temporarily rotationally fixed manner to the base body (10).

19. Machine according to one of claims 14 to 18, wherein the first (11) and second side wall (12) each have only one recess (14) and the base body (10) has at least two, preferably at least three, preferably at least four recesses (17), wherein the first side wall (11) is designed to be stationary, the second side wall (12) is rotatably decoupled from the base body (10) in the second position and the base body (10) is designed to be rotatable about the axis (100).

20. Machine according to one of claims 14 to 19, wherein the base body (10) is a first base body (10) and the second side wall (12) is attached to a second base body (27), wherein at least one of the first and second base bodies (10, 27) is hollow and is designed to receive the other of the first and second base bodies (10, 27).

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