EP0167795A1 - Method and apparatus (twisting tool) for twisting wire ends for the purpose of binding sacks, joining reinforcing rods in concrete structures, etc. - Google Patents

Abstract

In a method and an apparatus for twisting wire ends together for the purpose of binding sacks, connecting any desired parts or joining reinforcing rods in the subsequent manufacture of concrete or the like, it is proposed, while dispensing with end loops, to remove in each case one piece of wire of predetermined length from a wire spool 13 arranged on a twisting tool 10, and after winding round the parts one or more times to guide the free end piece 23b of the wire back into the region of a clamping or outlet opening 22 of the twisting tool 10, to fix it there by means of a clamping operation, and then to produce a twisting effect on the wires by pulling apart of the tool, the piece of wire still connected in each case to the stock wire spool being cut by a cutting apparatus, either at the time of the first clamping or after twisting, by means of an additional, voluntary movement by the user. A twisting tool for implementing such a twisting method comprises bearing means 12 for a wire stock spool 13 as well as wire-outlet or clamping means 16 which serve for clamping and/or cutting the piece of wire, the clamping region performing a rotary movement for twisting the wire ends when the tool is pulled out axially relative to the hand grip 11. <IMAGE>

Description

State of the art

The invention relates to a method according to the preamble of the main claim and a device according to the preamble of claim 12. In the construction sector, where the present invention finds a preferred field of application, it is known to combine iron or reinforcing bars or the like, which are used in the production of, for example, concrete or cement mixtures from iron or steel inlay, in that relatively short, prefabricated ones Pieces of wire are wrapped around the reinforcing bars by hand and then twisted together. These short pieces of wire are prefabricated in various lengths, depending on the number of reinforcing bars to be connected to one another, and have small closed loops at their ends, which are used, for example, to make them be made that the corresponding end regions are bent back on themselves and then welded together to form loops.

On the building site, i.e. where the reinforcing bars or reinforcing bars must then be effectively connected to one another, the respective fitter carries a larger number of different lengths of such wire ends with him and then selects predetermined wire lengths depending on the number of bars to be connected to each other Wire at least once around the rods held together and then, in order to twist the wire ends together and thus achieve a secure fit, thread the eyelets onto a hook of a twisting device. The twisting device is designed similar to a ratchet screwdriver or, in its basic function, also similar to a drill hand drill which causes a ratchet-like intervention, with the proviso, however, that the desired rotational movement of the front hook part of the twisting device is caused when the device is pulled. If the two wire ends are then twisted together, and the device can also be pulled several times, each after returning under the action of a pretension spring, then the terminal wire eyelets are removed from the hook again and it is then up to the fitter to determine whether they are simply leave the long wires, some of them considerably long, or cut them off with a pair of tongs, for example. In the latter case, however, care should be taken to ensure that cut wire ends do not fall into the formwork, where they rust and could affect the quality of the concrete part produced.

The whole process is comparatively cumbersome and that is why very complex, because the wire ends must be prefabricated, which is always only possible for certain longitudinal dimensions, so that the fitter then prefers to take a longer wire end when connecting the mounting rods than that he risks that when twisting not enough material to achieve a secure holding effect is available. In addition to the cumbersome, but usually machine-made, prefabrication of the wire ends with loops on both sides, there is also considerable waste of material on wire residues that are not required, regardless of whether these are cut off after twisting or left as they are. It is also cumbersome that the fitter must always carry a large number of prefabricated different wire lengths with him; the different wire lengths also require appropriate storage and storage, and despite all of this it is not always ensured that the fitter now has the required wire lengths available in sufficient quantities and also carries them with him.

Tying sacks or connecting rods, sticks and the like is similarly cumbersome. Like each other - here too, the wire pieces are often with end loops on both sides. used or you wind a corresponding piece of wire by hand around a previously summarized bag opening.

The invention is therefore based on the task of simplifying such a twisting process, as it is to be carried out, for example, when connecting mounting iron or reinforcing bars in the production of concrete or cement mixtures with steel or iron inserts, prefabrication costs for both sides to eliminate loop-reinforced wire lengths and in particular to simplify the work process directly on site and in this way also to relieve the respective user or fitter. Advantages of the invention

The invention solves this problem with the characterizing features of the main claim or the first device claim and has the immediately striking advantage that no prefabricated wire lengths are required at all, but the user or installer can on site the wire length he needs because of can estimate his experience with certainty, deduct it directly from a stock, with the further advantage that this stock is part of the device he needs for twisting and is therefore always available. It is also advantageous that the fitter or the person involved in such work always has a hand free to carry out the work of winding the wire length around the reinforcing bars, without having to put away the significantly modified, modified twisting device. In previous work, it was necessary to wrap or wrap the free wire length with the end loops around the bundle to be tied with both hands; then the twisting device was held with one hand and the eyelets were put onto the twisting device hook with some skill with the other hand. When twisting the twisting device it was necessary to put it down, that is, either put it in the pocket or put it down with the risk that it could fall down, particularly in the case of taller structures and scaffolding.

The present invention drastically simplifies these processes, if only because holding the modified twisting device also automatically holds one end of the wire to be wrapped around at the same time, so that the other hand is free and can easily attack the free end of the wire and this can lead around the bundle of reinforcing bars.

Furthermore, in the present invention there is no need to thread the end eyelets onto a hook on the twisting device; it is only necessary to bring the returned end into a fastening or clamping area at the front end of the twisting device and to arrange it there without tedious threading - as soon as you then pull the handle of the twisting device, the twisting movement results, which, if desired, also can be repeated several times, so that the mounting iron or reinforcing bars can be firmly clamped together.

In a first embodiment, only an additional movement is then required to activate a cutting device, preferably in the fully extended position of the twisting device, whereby on the one hand the one piece of wire that is still in connection with the wire winding is cut off (it is used for only one wire is cut off each twisting process), and at the same time when the device can now be retracted or retracted, a free length of wire emerges from the outlet opening - this had previously been pulled out during twisting - which can now be touched to carry out another twisting process .

The first exemplary embodiment of the present invention has a jaw opening formed by two mutually opposite and mutually displaceable clamping jaws, in which the free piece of wire is put back again after the reinforcing rods to be connected have been pulled out and wrapped; as soon as you then pull the handle of the twisting device, there is a firm clamping effect due to the clamping jaws both on the returned, free wire end and on the wire end or the wire area, which still protrudes from the mouth opening and otherwise during the twisting process with the wire winding is connected in the device, so that following this firm clamping action, the twisting movement already mentioned can then be carried out.

A further significant advantage in this exemplary embodiment of opposing clamping jaws is that after twisting, which can also be carried out several times, only a somewhat stronger pull on the twisting device is necessary, in order to then at the same time also clamp off the at least one wire end and a new free wire length for pulling out to provide the next twisting motion. This is done automatically by a cam guide which presses the two clamping jaws first to achieve an effective clamping and then the cutting and clamping action. It goes without saying that instead of straight cam tracks, such curve shapes can be used which, for the same purpose, initially combine, for example, a gradual movement of the clamping jaws with a subsequent jerky cutting action with a stronger pull.

In a second exemplary embodiment of the present invention with a further simplified and in this respect also improved handling, the free wire length in each case emerges from a front, eccentrically offset outlet opening, can then be pulled off and wound around the reinforcing bars to be connected and is then returned adjacent to the outlet area and there just put a hook-like structure around. This results in a provisional fixation of the free end, which is firmly connected to the other wire, which is still attached to the wire winding on the twisting device, by the subsequent twisting movement when the device is pulled out. This free hook, which can initially take up the returned end region by wrapping for twisting, is at the same time part of a rotating sleeve, namely as a cutout formed by a front cutting plate of the rotating sleeve. The rotating sleeve sits on the rotating part or bearing tube, which rotates when the device is pulled out, for example by holding a rear handle area of the twisting device (relative rotational movement to one another). The rotating sleeve is axially immovable, but freely rotatably fastened on this rotating bearing tube for the twisting process, so that in the fully extended position with a simple rotation of this rotating sleeve by a few angular degrees, the cutting plate forming the hook via the eccentric outlet opening of the wire with a lower sharp edge, so that the wire is cut off.

A third embodiment of the invention has the advantage that there are no longer any remaining wire lengths to be cut off, because the special two-part embodiment of the twisting device makes it possible to cut off the wire of the specified length from the supply spool in any way, for example also in the transverse direction, by means of a cutting process in the region of the clamping jaws, before twisting. The twisted ends then remain as they are or can be bent downwards. The user or fitter who works with the twisting device is basically placed as if he is working with a simple pair of pliers and the twisting device according to the invention also comprises a first manually operated pliers part which, in a first working part process, has a combination effect with one compared to the latter in the longitudinally movable and simultaneously rotatable clamp part exerts. This clamping pliers part is then pulled axially out of the pliers actuating part, whereby the clamping effect on the wires previously exerted by the pliers actuating part on the wires is automatically taken over, since its two jaws pass into a locking position when pulled out. In the also smooth transition there is then the rotary movement of the clamp part and the twisting to the desired clamping action, where then a simple, low-impact push forward releases the locking action of the clamp part, so that, immediately thereafter, the work is again ready Twist is available.

Advantageous further developments are possible through the measures listed in the subclaims. Particularly advantageous is the possibility, even before the drawn wire end is looped around, into a locking position in the area of a separate one To arrange the cutting part of the clamping jaws so that after wrapping the specified number of reinforcing bars and returning the free end to the clamping area, the wire connection still existing at that time between the supply roll and the loop formed is cut off by applying a conventional pliers closing pressure to the pliers actuating part and at the same time by pulling on the device in an immediate, subsequent transition, first, as already mentioned, the clamping action on the clamped wires is taken over by the clamping pliers part by displacing respective cam guideways, with immediately following twisting action by rotating the clamping pliers part.

drawing

• Fig. 1 eine erste Ausführungsform eines Verdrillgeräts für das Verdrillen von Drahtenden, teilweise im Schnitt, und
• Fig. 2 lediglich den vorderen Teil eines zweiten Ausführungsbeispiels eines Verdrillgerätes in einer seitlichen Schnittdarstellung,
• Fig. 3 zeigt das Verdrillgerät aus Fig. 2 in einer Ansicht von vorn mit dem hakenbildenden Schneidplättchen und
• Fig. 4 das Schneidplättchen im Schnitt längs der Linie IV-IV der Fig. 3,
• Fig. 5 ein drittes Ausführungsbeispiel eines Verdrillgeräts in einer Seitenansicht mit geöffnetem Klemmzangenteil und geöffnetem separatem Zangenbetätigungsteil,
• Fig. 6 die gleiche Bauform eines Verdrillgeräts in dem Augenblick des zeitlichen Arbeitsablaufs, in welchem der Klemmzangenteil soeben aus dem vorderen Zangenbereich des Zangen-betätigungsteils herausgeglitten ist und 'seine Drehbewegung aufgenommen hat und die
• Fig. 7a und 7b sowie 8a und 8b jeweils in einer seitlichen Teilansicht und in einer Ansicht von vorn verschiedene Möglichkeiten zur zwischenzeitlichen Arretierung des von der Wickelrolle abgezogenen Drahtendes im Schneidbackenbereich des Klemmzangenteils durch jeweils seitliche Haltefedern.

Several embodiments of the invention are shown in the drawing and are explained in more detail in the following description. Show it:

• Fig. 1 shows a first embodiment of a twisting device for twisting wire ends, partly in section, and
• 2 only the front part of a second embodiment of a twisting device in a side sectional view,
• FIG. 3 shows the twisting device from FIG. 2 in a view from the front with the hook-forming cutting tip and
• 4 shows the cutting tip in section along the line IV-IV of FIG. 3,
• 5 shows a third exemplary embodiment of a twisting device in a side view with the clamp part open and the separate clamp actuating part open,
• Fig. 6 shows the same design of a twisting device at the time of the work sequence, in which the clamping pliers part has just slipped out of the front pliers area of the pliers actuating part and has taken up its rotary movement and the
• 7a and 7b as well as 8a and 8b each in a partial side view and in a view from the front different possibilities for interim locking of the wire end pulled off the winding roll in the cutting jaw area of the clamping pliers part by respective lateral retaining springs.

Description of the embodiments

The basic idea of the present invention is to dispense with the previously required, prefabricated wire lengths, each with loops at the ends, for twisting wire ends in a twisting device to arrange a wire coil or a wire winder, from which the respectively drawn wire lengths pass via an outlet channel to a front outlet opening in the twisting device or are freely removable in the transverse direction. You can pull proper lengths of wire from the device to wrap around the parts to be connected, such as reinforcing bars, return them to the outlet opening and fasten them there in a suitable manner and then immediately start the twisting process by pulling out the Device, which in its basic design is similar to a ratchet screwdriver or a drill hand drill. After completing this twisting process, the piece of wire still connected to the wire winding in the device can either be cut off conventionally, which is the simplest solution, or, according to a modified first embodiment, can be cut off by a further jerky pulling movement, with the tensile force generated in this way on both sides, between them jaws forming a jaw opening are pressed towards one another, which clip off the wire located in the jaw opening, including the returned piece of wire.

Alternatively, according to the second exemplary embodiment, a rotating sleeve can be arranged on the rotating bearing tube in such a way that in the extended state, the wire piece still connected to the wire winding is separated by a cutting plate with a sharp shear edge, which is connected to the wire winding, by a further rotary movement, or the wire separation, In other words, in the third exemplary embodiment, which is designed as a double pliers element that is connected to one another via a rotary member, the cutting off of a wire end required in each case is effected before the twisting by pressing the manually operated pliers part.

In the following, the exemplary embodiment shown in FIG. 1, which has front clamping jaws and a jaw opening, is first discussed. The twisting device is designated by 10; it has a handle 11 made of molded hard rubber or a other suitable foamed elastomer or plastic and can consist of a rear, cup-shaped opening, preferably cylindrical receiving part 12 for a wire spool inserted at 13, which can be completed by a cover 14 with its peripheral areas surrounding the adjacent cylinder wall of the receiving opening.

In the front area, three reinforcing bars are indicated at 15 in this case, which are to be connected to one another in that a predetermined wire length is guided around these reinforcing bars 15 and the respective wire ends are then twisted together accordingly. For this purpose, the twisting device 10 has a front holding, clamping or receiving area 16 which can carry out an axial movement forwards and backwards in the plane of the drawing in accordance with the double arrow A as well as a twisting movement about itself in both directions of rotation in accordance with the double arrow B. The clamping area 16 is fastened to a rotary tube or a bearing rod 17 which is mounted with its end facing away from the clamping area 16 so that it can slide in the rear part of the twisting device 10.

Due to the axial sliding displaceability of the rotary tube 17 in the handle part, a twisting effect is simultaneously exerted on the rotary tube and, via this, on the entire clamping area 16, as is known per se in the known twisting devices, but also in so-called ratchet screwdrivers or drill bits . The ratchet-like engagement still has a freewheel in one direction of rotation, so that it also occurs several times can be twisted by repeated axial displacement.

For this purpose, the rotary tube 17 can have an external thread with such a steepness that no self-locking occurs - this nut then engages in a nut or driving device, not shown in the drawing, which is mounted in a suitable position in the handle 11 and which is free in one direction can rotate and is held in the other, for example by a ratchet. It can be seen that when the device is pulled apart, the simultaneous rotary movement of the clamping region 16 is brought about and only the axial displacement is effective when the device is brought together.

A prestressing spring 18 can also be provided, which is only indicated and is supported on both sides on an inner shoulder 19 of the handle 11 and on the other hand on a closing shoulder 20 of the rotary tube 17.

The twisting device also has an inner channel 21 which is guided from the receiving area 12 for the wire spool 13 to a mouth opening indicated at 22, so that when the wire spool 13 is inserted into the receiving part, for example, it is unwound from its inner turns, this wire 23 so far forward is led that it, from which state it was initially assumed, protrudes from the mouth opening 22 around a predetermined end region.

Furthermore, it is essential in the present invention that this jaw opening 22 is formed on the clamping area 16 by the fact that clamping means are provided which automatically act upon a pulling action take action area 11 into action. In the embodiment shown in the drawing, these clamping means are formed by two opposing clamping jaws 16a, 16b which, in their storage, which is formed by a cylindrical thickened extension of the rotary tube 17 themselves, comprise a cam guide in which they are slidably displaceable but so mounted that the Clamping jaws 16a, 16b are pressed against each other due to their loose storage. The exemplary embodiment shows two longitudinal slots 24 on each of the clamping jaws 16a, 16b with such an inclination that, with the bearing tube, stationary pins 25 which slide in the longitudinal slots loosen the jaws during a backward movement of the handle part 11 in a counter-movement. It goes without saying that any engagement mechanisms with cams which can be displaced along a curve can be provided here in order to achieve the desired clamping and, as will be explained further below, also clipping action on the wire ends.

The basic function is as follows:

When a new wire spool 13 is inserted into the receiving area 12, the inner windings first unwind such a length of wire that it passes through the channel 21 to the front mouth opening 22.

The wire end emerging from the mouth opening is gripped manually, pulled more strongly and passed around, for example, reinforcement bars 15, as shown in the drawing, in a loop 23a, in which case only one free wire end 23b is then fed back into the mouth opening, at least so far that the wire end behind the bilateral, from the jaws formed, opposing cutting edges 26 comes to rest.

If you then pull the handle, the clamping jaws 16a, 16b automatically close with their cutting edges 26, hold the wire passed through and the returned wire end 23b firmly and with further pulling - practically simultaneously, with the clamping jaws 16a, 16b initially being slightly axial and simultaneously have shifted inwards - the rotational movement of the clamping region 16 on the rotary tube 17 then begins when it is pulled out of its handle position. A single pull-out is normally sufficient to twist so many turns of the wire that it securely clamps and holds the reinforcing bars 15; if further turns are required, the pull-out is carried out again.

Subsequently, as can easily be seen, only a short push on the twisting device is then necessary to cause the double-sided cutting edges 26 of the clamping jaws 16a, 16b to completely snap off the wire regions which they have gripped, since the clamping jaws 16a, 16b abruptly due to this sudden jerk are squeezed together and the wires are clipped. This danger is practically non-existent during normal pull-out, because a stronger pull merely causes the rotary tube 17 to be pulled further out of the handle area; However, if the bearing tube is at the rear stop, the full pressing force is transferred to the clamping jaws 16a, 16b, which are torn towards one another along their curve guides. It can therefore be seen in the device according to the invention that fast and precise work is possible even for the inexperienced, with only as much wire being used how effective it is needed for binding. The fitter immediately recognizes how much he needs to loop around the reinforcing bars 15 once or twice; if the stripped length is not sufficient, then more can be easily pulled off, since the supply spool arranged in the rear part of the device can supply as much wire as required.

A further mechanism guaranteed by the invention results from the fact that during (initial) and also with each subsequent pulling out under twisting action free wire length is always supplied, which fills the channel 21 which extends axially when pulled out. In other words: a previous assembly process at the same time provides the new wire lengths that are then required in the subsequent assembly process, because as soon as the clipping process is also finished, the biasing spring 18 retracts the clamping area 16 and the existing one in the axially extended channel 21 Wire inevitably comes out through the mouth opening 22. It can then be gripped by the fitter and pulled out as far as necessary.

The cam track guides for the clamping jaws can be designed in such a way that a locking area to be overcome only by stronger jerking action is formed, up to which a weaker clamping action in this respect acts on the wire areas clamped in the cutting edges 26, while when this locking position is overcome then, if necessary by means of a corresponding reduction, the clamping jaws 16 are pressed inward with an extremely strong pressing force and thus cut the wires with their cutting edges 26 securely. The mouth opening 22 can also be made as a whole be funnel-shaped, so that the fitter can easily bring the wire end he has placed around the reinforcing bars 15 back into the area of the mouth opening 22 and insert something in order to be able to immediately produce the twisting effect by pulling out the device.

In the following description of the second exemplary embodiment, corresponding to the illustration in FIGS. 2, 3 and 4, only the basic components are dealt with to the extent that they are different and are therefore to be explained with reference to the first exemplary embodiment. In the second exemplary embodiment, the same reference numerals are used for means having the same effect, only with an additional comma at the top.

In FIG. 2 the handle is designated 11 'and a stationary bearing tube emanating therefrom with l1a'; In this bearing tube, with simultaneous axial displacement, the rotary tube 17 'mentioned earlier rotates, through the inner guide channel 21' of which one wire end 23 'in the rear part of the device, i.e. in the plane of the drawing on the right in the drawing plane, leads to a front outlet opening 30 is.

The simplest case of a construction based on this basic construction of FIG. 2 is then that any hook is attached to the front head part 17a 'of the rotary tube 17', around which the returned wire end after it has been looped around the reinforcing bars is put around so that when you pull on the rear handle 11 the Ver Drilling effect on the two wires in the exit area results. It is then also necessary to arrange a cutting element so that it can be pivoted eccentrically on the head region 17a of the rotary tube 17 'in such a way that the wire is clipped off with a front cutting edge when the scissor-like folding or sweeping over the outlet opening 30.

Preferably, as shown in Fig. 2, an outer rotating sleeve 31 is provided, which is slidable on the outer tube surface of the stationary bearing tube 11a 'as well as rotatable relative to this and with respect to the rotating tube 17', namely in that an inner flange or ring projection 32 on the rotating sleeve 31 which engages behind the shoulder 33 formed by the thickened head 17a 'of the rotating sleeve 17' - on the other hand rests on the outer end ring surface 34 of the stationary bearing tube 11a '.

The further structure in this exemplary embodiment is then such that the inner guide channel 21 'for the wire feed has a front outlet channel 35 which runs obliquely from the center, so that the actual outlet opening 30 offers itself offset from the center of the rotary tube head 17a'. Above the end face 36 of the rotary tube head 17a 'there is then also a fixing and cutting plate 37, which, however, is connected to the rotary sleeve 31, for example via one or more connecting bolts which are inserted in bores indicated at 38, optionally with the interposition of an intermediate - or spacer ring 39. Therefore, the widened head region 17a 'of the rotary tube 17' from the rotary sleeve is in connection with the fixing and cutting plate 37 axially gripped on both sides, but held with free mutual rotation.

The shape of the fixing and cutting plate is as shown in the top view of FIG. 3; A U-shaped incision 40 extends from the outer circumference to the center, but offset eccentrically, the part of the fixing and cutting plate which continues to rotate from this incision 40 in the drawing plane downwards in a suitable manner, for example 3 is lifted or grooved over the inclined surface shown in FIG. 3 with 41, so that both the outlet opening 30, at least in the positions shown in FIGS. 2 and 3, is exposed, either because it is located within the recess 40 or under the lifted off Part lies. Only the other, further half of the cutting and fixing plate 37 is then fully disc-shaped and then lies both on the end face 36 of the head 17a 'and over the intermediate ring 39 on the edge region of the rotating sleeve 31 and is also fastened there, like three corresponding ones Show fastening screws or bolt-receiving bores 38a, 38b, 38c. It can be seen that the cutting tip therefore forms a type of front pointed hook, which is denoted by 42 in FIG. 3 and which is exposed downward and cantilevered freely in the arc.

The operation of this embodiment is particularly simple; the fitter working with this twisting device continues to pull out the wire piece 23 'which projects freely outwards (see FIG. 2) until he has enough wire available to loop around the desired amount of reinforcing iron, possibly more fold, and then leads, as indicated in Fig. 3, this wire end back to the area of the outlet opening, where it is simply looped from the inside around the hook 42 on the fixing and cutting plate, as shown in Fig. 3 is. You can immediately see that this is also the final position for twisting, because if you now pull the handle 11 'without holding anything on the device with the other hand, you pull the rotary tube 17' axially out of the stationary bearing tube 11a ' , whereby at the same time the rotary movement of the rotary tube 17 'and of course the rotary sleeve 31 also results. In fact, the rotating sleeve 31 simply rotates during this twisting process, since it is arranged to slide and rotate on the outer surface of the stationary bearing tube 11a and, moreover, has a certain entraining effect due to the wire loops protruding over the fixing and cutting plate, which have just been twisted .

Only when this twisting process is carried out by pulling out one or more times and the corresponding rotary movement of the entire head region including the rotating sleeve 31 is the twisting device preferably held in the extended end position in which the biasing spring 18 'between the stationary bearing tube 11a' and the rotating tube 17 'is full is pressed together - the fitter can now grasp the rotary sleeve 31 with the other hand and turn it by a slight angle of rotation, for example a quarter turn relative to the one that is no longer rotatable with the rotary tube 17 ', namely in the end stop position. The rotary tube 17 'can no longer be rotated further in this extended position since it lies against the stop - it only the degree of freedom of the relative rotation of the rotary sleeve 31 with respect to the rotary tube 17 'and its head region 17a "remains. By rotating the rotary sleeve 31 clockwise, if one looks at the illustration in FIG. 3, the one at the stop on necessarily also shears the sharp rear edge 43 of the cutout 40 in the fixing plate connected to the rear wire coil and coming out of the exit opening 30 simply removes this wire, the slight eccentricity of the exit opening 30 being advantageous due to the leverage.

Then the rotating sleeve 31 is rotated again in the same operation of rotating the cutting tip via the outlet opening 30, so that this outlet opening is released again, and the entire front part is released, as a result of which the device contracts again under the action of the prestressing spring 18 '- with others Words, the rotary tube 17 'fully retracts into the stationary bearing tube 11a'. However, since there is a free outer piece of wire up to the outlet opening 30 in the guide channel 21 ', which is no longer wound back onto the wire winding, this also results in the exit of such a length of wire as is approximately fully extended to the maximum change length of the twisting device between the position " "on the one hand and the position" fully retracted "on the other. At this free end of the wire, the fitter can immediately pull again, loop around the mounting iron again, hang the wire end piece over the hook 42, twist by pulling out and cut off the sleeve 31 by a rapid rotary movement to be reset.

In the third exemplary embodiment shown in FIGS. 5 to 8, the twisting device is designated by 10 "and comprises a front clamp part 50 and a rear clamp actuating part 51 which realizes a first part of the desired workflow by manual actuation (pressing) the mechanical structure is further explained; it can be seen that the pliers actuating part comprises the basic shape of pliers 52, which are composed of two pliers halves 52a, 52b, which have an articulated connection at 53, the ones on the right in the plane of the drawing with respect to the device Handle parts 54a, 54b arranged further to the rear are spread out, so that the front jaw opening 55 is also spread and can accommodate the clamping pliers part 50. In any case, the take-up takes place to such an extent that both-sided upper and lower pliers jaws integral with the handle parts 54a, 54b 56a, 56b in the fully retracted, ie retracted position of the clamp part 50a n Abut and embrace the upper and lower end regions of the clamping jaws 57a, 57b of the clamping pliers part. The construction of the pliers actuating part 51 is completed by an axially rearwardly extending bearing sleeve 58, onto which a supply wire winding 59 can be pushed and held, for example, by a rear locking screw 60. On the bearing sleeve 58, the supply wire winding 59 is rotatably arranged and of such a shape that, by manually grasping a wire end 61 on the supply wire winding 59 and pulling it off, this supply wire winding is rotated so that corresponding desired wire lengths can be released. This will be discussed further below .

The bearing sleeve 58 and the area of the articulation 53 is interspersed with a screw rod or twisting rod 62 with a correspondingly large slope, as is also known in the case of such screwdriver screwdrivers, with a corresponding counter-element which encompasses the screw rod 62 and which, for example, can be a type of ball bearing which, in the manner of an annular ring, the screw rod 62 5 and 6 is located in a stationary bearing block which cannot be seen in the drawing and which can be arranged in the region of the articulated connection 53 for the pliers actuating part 51, is penetrated by the screw rod 62 and at the same time rotates the bearing sleeve 58 for the supply wire winding. This will be discussed further below. The screw rod 62 is supported and is firmly connected to the front clamp part 50; if one pulls the clamping pliers part 50 to the front or to the left in the plane of the drawing from the area of the pliers actuating part 51, then twisting automatically results when the latter is held in place, caused by the complementary screw thread engagement between screw rod 62 and the stationary bearing block.

The clamping pliers part 50 first comprises a bearing part 64 which is fastened to the front end of the screw rod 62 and is welded on, as shown at 63, in the exemplary embodiment shown consisting of two lateral flat webs 65a, 65b which are arranged at a predetermined distance from one another and which can pivot between them , that is to say, take up clamping jaws 57a, 57b which can be rotated about a predetermined angular opening by means of a common hinge pin 66. The hinge pin 66 is, however, in a slot-like recess 67a, 67b in the two sides Flat webs 65a, 65b of the bearing part 64 are held axially displaceable by a predetermined path length, so that the two clamping jaws 57a, 57b can also move axially relative to the flat webs 64a, 65b supporting them and within them.

It is essential here that this axial movement of the clamping jaws or of the joint bolt GG holding them together in the elongated hole 67a, 67b on both sides of the flat webs 65a, 65b also causes an additional movement, namely in this case a closing movement in the front clamping region 68 such that 5, the upper and lower clamping surfaces 69a, 69b of the clamping jaws 57a, 57b approach each other and in any case close so far that wire pieces inserted between these clamping surfaces are held firmly and securely. This closing movement when the two clamping jaws are axially displaced along the flat webs supporting them is effected by cutouts or cam tracks 70a, 70b on both sides in the surfaces of the clamping jaws adjacent to the flat webs, these cutouts being held by a stationary sliding bolt or in the double-sided flat webs 65a, 65b Counter cams 71 are interspersed. It can therefore be clearly seen from the illustration in FIG. 5 that when the sliding pin 71 enters the tapering, in this respect, of course, virtual cross slot of the respective cam track 70a, 70b when the two clamping jaws 57a, 57b turn to the left in the plane of the drawing move, the clamping jaws are necessarily pulled towards each other, so that there is an effective closing and clamping connection, also due to the lever effect achieved in the front clamping area 68. Because the strength of the wire to be clamped in each case is known, the cam tracks and the sliding pin can be dimensioned in such a way that a certain locking of the compressed position of the clamping jaws by a linear end piece or a kind of snap action results when a predetermined safe clamping end state is reached. The open position of both the clamping jaws 57a, 57b for initial use can result, for example, from a spring indicated at 72 and for the pliers halves 52a, 52b from a conventional tension spring, which cannot be seen in the drawing and which rotates about the articulation point 53.

The construction is completed by a cutting device in the area of the clamping jaws 57a, 57b for the separation of the respective free piece of wire drawn off from the supply wire winding 59; a preferred embodiment is constructed such that, as can best be seen from the top view of FIGS. 7b and 8b, in the drawing plane on the right and with reference to the work function behind the clamping surfaces 69a 69b and only on one side, for example, up to extending a third of the width of the clamping surface, a cutting edge 73 is arranged which, when the clamping jaws are pressed together, sweeps along the rear surface adjacent to the clamping surface of the lower clamping jaw in this case and cuts off the wire located at this point, as will be explained below, and at the same time, when closing, the front part of the wire is held in place by the immediate approach of the clamping surfaces.

The basic function of the twisting device according to the invention is then follows, starting from the open pliers position shown in FIG. 5. The user subtracts a predetermined length from the supply reel 59 by grasping the respectively free wire end piece 61, the roller rotating according to the arrow A and guiding this wire end 61 forward, bringing it into the area of the open cutting edge 73 of the front Clamping jaws 57a, 57b, it leads around the reinforcing bars or mounting iron to be connected and also brings the returned end into the clamping area 68. This is practically all the manual preparatory work that is required; because if the user held the device in his right hand during this process, for example, the pliers actuating part 51 is now only pressed together by actuating the handle parts 54a, 54b, and the clamping jaws 57a, 57b are simultaneously closed by this pressing together, since the jaws 56a, 56b in this starting position can exert the closing pressure when closing the rear ends of the two jaws. As a result of this closing, the wire 61 is cut off once by shearing or cutting off with the cutting edge 73, the remaining wire length being released up to the supply roll 59, at the same time as a result, the two wire ends are immovably held and clamped in the clamping surface area during this cutting process. After the two handle parts are now pressed firmly against one another, and, as shown in FIG. 6, can also rest against the supply wire winding 59, the pliers actuating part 51 is pulled inwards, under certain circumstances jerkily, whereby the two clamping jaws 57a, 57b initially move theirs Relative axial movement with respect to its bearing part 64 or, more precisely, with respect to the sliding pin 71 perform, which is held stationary in the flat webs 64a, 64b. This is not otherwise possible due to the structural conditions, because in this position the two rear end regions of the clamping jaws 57a, 57b are held in the upper and lower pliers jaws 56a, 56b in such a way that they can initially only move axially out of them, not against them can twist what is possible only when they are released. However, this axial movement closes the clamping jaws or secures and locks the clamping effect caused by the compression of the handles 54a, 54b, since the cam tracks run through the sliding pin 71 to the stop. As soon as this position is reached, which at the same time means the position in which the clamping jaws 57a, 57b have come free from the pliers handle of the pliers actuating part 51, the twisting action begins and the front clamping pliers part 50 begins to rotate in accordance with the free extension length and twists it wire ends clamped together by him. The length of the screw rod 62 can be considerable, so that the full twisting path is used up with a single pull-out; if necessary, however, it is also possible to arrange a ratchet lock, as a result of which the twisting process can be repeated. Usually, however, this is not necessary. As soon as the wire is twisted, a slight push forward with the hand holding the pliers actuating part is sufficient for the cam tracks to slide along the sliding bolt in the now opposite direction, which results in an immediate opening movement of the jaws 57a, 57b and release of the twisted wire end area corresponds. At this point the twisting device can be used again; however, it is in full extended state and the user then only needs to position the entire twisting device, which he holds on the handles 54a, 54b, vertically, so that the clamp part 50 is at the top, whereupon, due to his own weight and the considerable slope of the Screw rod 62 of the clamp part slips back into the starting position shown in FIG. 5.

It is crucial that this twisting process takes place in a fluid and basically particularly simple manner, much easier than this can be explained for a better understanding and also for an understanding of the interaction of the different parts during the functional sequence.

A help that may be desirable is provided by a further advantageous embodiment of the present invention, which consists in that, for example, as shown in FIGS. 7a and 7b, a clamping or holding spring in the form of a flat spring 74 is arranged in the region of the upper (seen from the front) jaw 57b , which is slightly open at the bottom, as best seen in FIG. 7b. In Fig. 7a is indicated how to proceed in this case; the free wire end 61 'drawn off from the supply wire winding 59 then only needs to be pressed against the prestressed flat spring 74 from below, whereupon the latter springs back and ensures that this end of the wire is taken up in the insulation displacement area of the clamping jaws 57a, 57b in the correct place. Sliding out is no longer possible due to the practical closure of the cutting area by the spring 74, and further sliding in is also not possible, since the wire here connection of the two jaws is locked. This wire end is then immovably exposed to the cutting edge 73; the work process is completed by again leading the rest of the end around the parts to be connected and then inserting it, for example, on the still free side at 75 into the open jaws. The rest of the process is then as described above; simply by closing the handle parts 54a, 54b, everything else runs automatically if you then practically pull the handle parts backwards at the same time. It can also be seen that no wire remnants remain, since the only cutting process that takes place takes place through the partial cutting edge 73 in the clamping surface area and relates to the separation of the free wire end from the supply wire winding.

The embodiment of FIGS. 8a, 8b is similar and in this case has at least one pretensioned wire spring 76, which is arranged on a guide part 78 forming a conically tapering insertion slot 77 for the wire end, preferably on both sides, so that one can then easily recirculate it Can still arrange wire end in the area of the jaws. The holding wire or the wire spring 76 is loop-shaped and, when the free wire end is inserted into the conical receiving slot 77, diverts upward and then blocks the wire from escaping or sliding back both in the drawn-off area and in the returned wire end, so that - and this exemplary embodiment could rather be used for an inexperienced area of activity, both wire parts are held securely in the clamping area before the pliers are pressed together.

It should also be pointed out that the formation of the elongated holes 67a mentioned above in the two-sided flat webs 64a, 64b is only realized to the extent necessary for the sliding and articulating functions of the two clamping jaws at this point; In the illustrated embodiment, the elongated hole 67a, 67b is open upwards or downwards - this is different for the two flat webs 64a, 64b - only for reasons of expediency, so that the flat webs do not build so far forward that a longer one Distance of the front clamping area 68 is required. The partial removal of material enables the free movement of the clamping jaws in the elongated hole area and a strong leverage effect due to the short distance of the clamping surfaces from the hinge pin 66.

In order to effectively avoid the problem that when pulling free wire ends cut transversely to the supply wire winding 59 turns or the wire turns get tangled, an advantageous development of the present invention is that the wire winding 59, as can be seen in FIG. 5, is linear in the transverse direction and helically wound wire winding layers, with the wire to be wound being fed in the transverse direction to the longitudinal extent of the winding and then with a slight slope laterally each winding is placed on it, i.e. without any cross lay. The procedure is further such that the lowermost winding layer is widest and each subsequent winding layer is then withdrawn by at least one loop or more loops, so that the wire winding ends have a stepped shape that tapers conically. Such a wire wrap will last without any Recording coil and forms a closed whole and is then pushed onto the bearing sleeve 58 of the device receiving it. As already mentioned, this bearing sleeve can be rotated relative to a stationary bearing block, so that it is possible to firmly clamp the wire winding on both sides of the bearing sleeve, advantageously in that each individual winding layer is also included in the clamping process. For this purpose, as indicated by dashed lines in FIG. 5, the fastening nut 60 is conically advanced in the direction of the wire winding 59, the inner bore tapering outwards in a stepped manner and in this way all the wire winding layers being individually gripped and essentially axially when tightened appropriate biasing forces are clamped and held immovable. It is understood that a corresponding counter-clamping bracket 79 is arranged on the opposite side of the rotatable bearing sleeve. The type of clamping of the wire winding is shown in the illustration in FIG. 5 in an exaggerated manner in anticipation to the inside; as soon as the top layer has been released, the next layer can be easily removed from the conical shape.

This basic idea of the formation of the wire winding in the form of an elongated coil also includes the possibility of not tapering the coil towards the two ends, but of practically complementary to this basic shape, that is to say in such a way that an innermost or lowermost winding layer is narrowest, i.e. has the shortest longitudinal extent, and any further winding layer placed thereon is cantilevered on both sides by at least one or more wire thicknesses, so that in the end when, for example, eight windings are placed, the two ends expand or widen in a conical shape from the inside to the outside and, as is understood, the receiving means on the rotating or bearing sleeve 58 of the device have the corresponding complementary shape, that is to say with stepped inner projections on both sides in the Engage the coil of the wire winding and then press each winding layer together when tightening, so that cutting or tangling of the wire windings is also excluded. In this way it is possible, if necessary, to avoid a problem which arises when subsequent wire layers, as it were, have to be fetched out of regions of the counter-tensioning holders 79 on both sides, which are lying further and further inward. In the second embodiment of the wire winding spool, each subsequent turn is then exposed for unwinding.

A last possibility for the formation of the wire winding is that the end flanks fall completely in a straight line, so that the wire winding forms a pronounced square shape in the outline. Practically every winding layer can also be clamped in on its own if the tensioning brackets on both sides of the rotating sleeve 58 have flat surfaces facing the wire winding.

All features shown in the description, the following claims and the drawing can be essential to the invention both individually and in any combination with one another.

Claims (36)

1. A method for twisting wire ends together to tie up bags, connect any parts or monier iron (reinforcing bars) in the subsequent production of concrete, cement mixtures for buildings, bridges and. Like., wherein a wire element is wound around the parts to be connected, grasped at its ends and these are then twisted together, characterized in that, without end loops, a piece of wire of a predetermined length is drawn off a wire coil (13, 59) located on a twisting device and after the parts have been wrapped one or more times, the free wire end piece is returned to the area of a clamping or outlet opening (22, 30, 68) of the twisting device (10, 10 ', 10 ") and is inserted and held in the clamping or outlet opening area that then, by pulling apart the device, the twisting effect of the wires, which is known per se, by a correspondingly induced rotation movement of the outlet opening or clamping area and then or at the time of the pinching by an additional arbitrary movement, a cutting device in the clamping or outlet opening area is activated and the wire is cut off. 2. The method according to claim 1, characterized in that at the same time with the twisting pulling the twisting device (10, 10 ') wire from the supply reel (13) inside the device in the direction of the front exit region (mouth opening 22; outlet opening 30) is withdrawn . 3. The method according to claim 1 or 2, characterized in that after wrapping the reinforcing bars, the free wire end in a jaw opening (22) at the front end of the twisting device (10) is returned and there together with the emerging wire due to a pulling apart of the device developing clamping effect is held and then twisted. 4. The method according to claim 3, characterized in that in the clamping area of the jaw opening (22) on both sides clamping jaws (16a, 16b) with the wire areas capturing cutting edges (25) so over cam tracks and cams comprehensive connecting means that by an additional jerky pulling movement of the when the device is fully extended, the wires are cut off after the twisting process. 5. The method according to claim 1 or 2, characterized in that After wrapping the reinforcing bars, the free wire end is placed in a hook (42) formed by a fixing and cutting plate in the area of the outlet opening (30) and then twisted by pulling the device apart. 6. The method according to claim 5, characterized in that the fixing and cutting plate forming the hook after completion of the twisting process is rotated by a rotary movement on the outer sleeve (31) over the wire outlet opening (30) such that a shear edge of the cutting plate (37 ) cut the wire. 7. The method according to one or more of claims 1 to 6, characterized in that after separating the wire ends of the wire drawn during the twisting of the wire supply winding due to the contraction of the device caused by the bias spring (18, 18 ') from the front exit region is pushed out. 8. The method according to claim 1, characterized in that the free wire length from the twist (10 ") rotatably mounted wire winding (59) is pulled in the transverse direction and inserted with a central part in an insulation displacement area and then the parts with the free end piece wrapped one or more times and the free wire end is returned to the clamping area, that the wire is then cut off from the supply wire winding (59) in the middle area by a pincer pressing movement and at the same time the clamping effect exerted on the two wire ends located in the clamping area and the twisting process is subsequently brought about by axial backward movement. 9. The method according to claim 8, characterized in that when axially pulling out the clamping action on the wires from the front clamp part is taken over by a separate axial movement and is therefore maintained, with the immediately subsequent rotary movement for twisting the wires. 10. The method according to claim 8 or 9, characterized in that for releasing the clamping effect, the twisting device is pushed briefly forward, whereby cam tracks are released from the area of a sliding bolt and front jaws open. 11. The method according to claim 8, 9 or 10, characterized in that after loosening the twisting device from the twisted wire end area, this is held vertically such that a front clamping pliers part runs into a rear pliers actuating part by performing a now backward rotating movement. 12. Device for twisting wire ends together to tie sacks, connecting monier iron (reinforcing bars) for the subsequent production of concrete, cement mixtures in buildings, bridges and the like, or other parts, with a wire element wrapped around the parts on his Detected ends and then twisted together to Carrying out the method according to one or more of claims 1 to 11, characterized in that a receiving area (12, 58) for a wire supply reel (13, 59) is provided, from each of which free wire lengths can be deducted, with a front wire exit or clamping area for clamping and / or cutting off the piece of wire, the exit or clamping area being mounted in such a way that when the device is axially pulled out relative to it, it performs a rotary movement for twisting the wire ends. 13. The apparatus according to claim 12, characterized in that a fastening region (clamping jaws 26; hook 42) is arranged adjacent to the front exit region for a respectively withdrawn piece of wire, which together with the removed, wound around the parts free wire end (23a, 23 ') picks up the held wire area, holds it and twists it when the device (10, 10 ') is pulled out. 14. The apparatus according to claim 13, characterized in that the twisting device (10) adjacent to a handle area (11) has a cylindrical receiving area (12) and with the hand area a rotary tube (17) axially slidably mounted, which at its front end to form the clamping area (16) carries at least one loosely mounted clamping jaw (16a, 16b). 15. The apparatus of claim 13 or 14, characterized in that from the receiving area (12) for the wire coil (13) up to An inner wire guide channel (21) penetrating the handle area (11), the bearing tube (17) and the jaw bearing area is provided in a front mouth opening (22) formed by the clamping area (16). 16. The apparatus of claim 13, 14 or 15, characterized in that the bearing area of the clamping area (16) bearing tube in the rear part of the device (handle area 11, receiving area 12) is slidably mounted under the action of a biasing spring (18) so that at a Axial movement in one direction in a manner known per se results in a positively guided rotary movement over the bearing tube (17) with the handle (11) held onto the clamping area (16) and with an axial movement in the other direction a free-wheeling effect. 17. Device according to one of claims 13 to 16, characterized in that the clamping area comprises at least two mutually movable and removable clamping jaws (hard jaws 16a, 16b) which form a front funnel-shaped mouth opening (22) and have cutting edges (26) with which the inserted wire end and the wire area passed through are first held and then cut off during the twisting. 18. The apparatus according to claim 17, characterized in that the two jaws (16a, 16b) via oblique elongated holes (24) which run in pins fixed to the bearing part of the bearing tube (17) are positively guided such that there is an axial pull - or pressure, the jaws, following the respective curve shape, approach or remove from each other. 19. The apparatus according to claim 18, characterized in that a stationary bearing tube (11a ') is fixed to the handle (11'), in which the rotary tube (17 ') is axially slidably and rotatably mounted, and that at the front end region (thickened head part 17a ') of the rotary tube (17') there is an outlet opening (30) for the wire, with respect to which a pivotable part, which separates the wire end by shearing action, is rotatably arranged. 20. The apparatus according to claim 19, characterized in that with the wire tube (17 ') axially immovable, but freely rotatable, a sliding sleeve (31) is connected, the head portion (17a') of the rotary tube (17 ') at its front end region. at least partially covering fixation and cutting plate (37), which forms both the hook (42) for receiving the returned wire end and a cutting / shaving edge (43) for cutting the wire following the twisting process by relative rotation of the rotating sleeve (31 ) with fixing and cutting plate (37) to the head part (17a ') of the rotary tube (17'). 21. The apparatus according to claim 19 or 20, characterized in that the widened head portion (17a ') of the rotary tube (17) on both sides by means of an inner flange (32) and by the fixing and cutting plate (37) attached to the sliding sleeve (31) this is encompassed and has an oblique connecting channel (35) leading to an eccentric outlet opening (30) for the wire, the fixing and cutting plate (37) in turn pulling over the center following a secant Has incision (40) and has an increasingly changing thickness for hook formation such that a hook-shaped portion of the fixing and cutting plate (37) is exposed relative to the end face (36) of the rotary tube head (17a '). 22. The apparatus according to claim 12, characterized in that the twisting device (10 ') has a rear pliers actuating part (51) on which the user engages manually, and a front clamping pliers part (50) with their own clamping jaws (57a, 57b), that hold the wire to be twisted. 23. The device according to claim 22, characterized in that the clamping pliers part (50) via a screw rod (62) fixedly connected to it is mounted on the pliers actuating part (51) and in an initial position with rear end regions of its clamping jaws (57a, 57b) the opened upper and lower pliers jaws (56a, 56b) of the pliers operating part (51). 24. The device according to claim 22 or 23, characterized in that the manual actuation handles (54a, 54b) having pliers actuating part (51) comprises a bearing block for holding the screw rod (62) and for effecting the rotary twisting movement and a rotatable Bearing sleeve (58) for receiving a supply wire winding (59). 25. Device according to one of claims 22 to 24, characterized in that the pliers actuating part (51) is designed such that when the upper and lower pliers jaws (56a, 56b) are open Clamping jaws (57a, 57b) of the clamping pliers part (50), which are also in the open state, are received so far that when the handles (54a, 54b) of the pliers actuating part (51) are pressed together, the two wire end pieces are cut off simultaneously with the cutting of the wire connection by the transmission of the Pliers closing movement are jammed. 26. Device according to one of claims 22 to 25, characterized in that the clamping jaws (57a, 57b) of the clamping pliers part (51) for carrying out a torsion-free axial partial movement in a bearing part (64) of the gill pliers part (51) are held so that When initially pulling out with the pliers actuating part closed, the end regions of the clamping jaws (57a, 57b) from the pliers jaws (56a, 56b) of the pliers actuating part - (51) are released axially on the one hand to enable the twisting movement, and on the other hand are brought into the closed position by a force guide are held in such a way that the clamping effect on the wires initially exerted by the pliers jaws of the pliers actuating part is taken over and maintained by the clamping jaws released from them. 27. The apparatus according to claim 26, characterized in that the clamping jaws (57a, 57b) in lateral flat webs (65a, 65b) of the bearing part (64) are held in an elongated hole guide (67a, 67b) and each have cam surfaces (70a, 70b) , which run in axial movement on a stationary sliding bolt (71) of the bearing part (64) in such a way that a closing movement of the clamping jaws is effected or maintained at the same time when extending and open the clamping jaws when the movement is reversed. 28. Device according to one of claims 22 to 27, characterized in that in the starting position by the inner contact of the end regions of the clamping jaws (57a, 57b) on the upper and lower pliers jaws (56a, 56b) of the pliers actuating part (51) an axial movement enabling, but preventing a twisting movement, locking of the clamping pliers part (50) in the pliers actuating part (51) is achieved and ensured until the clamping jaws (57a, 57b), which take over the clamping movement, and thus the clamping pliers part due to the cam construction (50) come out of the pliers jaws and at the same time carry out the twisting effect caused by the screw rod (62). 29. Device according to one of claims 22 to 28, characterized in that the supply wire winding (59) on its bearing sleeve (58) is rotatable and held by a counter screw (60). 30. Device according to one of claims 22 to 29, characterized in that a resilient locking in the region of the clamping region (68) of the clamping pliers part (50) is provided such that the introduced central region of the wire to be separated safely in the combined cutting-clamping region g ( is. 31. The device according to claim 30, characterized in that the clamping lock is a flat spring (73) attached to the front part of a Klen. 32. Apparatus according to claim 30, characterized in that for locking the wire end inserted in the clamping cutting area resilient wire loops are preferably provided on both sides in connection with outwardly opening insertion openings of a two-sided extension (68), which after insertion of the wire into the combined Prevent the clamping cutting area from re-emerging. 33. Device according to one of claims 22 to 32, characterized in that the clamping surfaces (69a, G9b) formed by the clamping jaws (57a, 57b) have at one point a rearwardly offset cutting edge (7 3), such that at the same time with the pinching of the inserted piece of wire, this is cut off from the supply wire winding (59). 34. Apparatus according to claim 24, characterized in that the rotatable bearing sleeve (58) held by the bearing block of the pliers actuating part (51) on both sides stop clamping means for fixed mounting of the supply wire winding (59) carrying out the rotary movement with it when removing the free wire end ) having. 35. Apparatus according to claim 34, characterized in that the stop-tensioning means for the supply wire winding (59) on both sides have an inwardly or outwardly stepped shape, which in each case has a conically widening or tapering shape for receiving the respectively complementary wire winding ends on the bearing sleeve (58). . 36. _V orratsdrahtwickel, consisting of several superimposed wire winding layers, in particular for use in connection with an apparatus according to claim 24, 34 and 35, characterized in that the screw-thread-like coiled respective wire layers in each case by at least one wire thickness in each case increases at the ends or decrease in such a way that stepped, inside-out conically widening or inside-out tapering wire winding end area shapes result.

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