DE1615612B2 - Device for pressing a U-shaped electrical connection terminal - Google Patents

Description

45

In the own older German patent 14 65 146 a device for cutting off an electrical Wire and then pressing the wire onto a U-shaped electrical connection terminal described. The connecting clamp is placed between a die, which has a recess, and a pressure die, the die entering the recess of the die and as a result, the connecting terminal located between the die and the die is deformed and pressed against the wire will. The die is divided into two parts along its longitudinal axis. In one embodiment a shear member is movably arranged between the two parts so that the wires between the shear member and the adjacent edges of the die parts can be cut off. In another Embodiment, the two die parts are arranged movably to each other, and the wires can cut between the edges of these parts. Because the wires are inside the two ends of the Die are cut off, the cut wire ends are inevitably in the axial direction separated from each other in the ferrule The ferrule must therefore be long enough to encompass both ends of the wire, while these are spaced apart from one another in the axial direction.

In a device known from US Pat. No. 2,549,838 the type mentioned in the preamble of claim 1 is the length of the connecting terminal reduced by the fact that the two lead wires overlap each other in the connecting terminal be inserted. The two shear members are arranged between the ends of the pressure die and move into slots of the pressure die during operation of the arrangement, whereby the of the Shear members themselves held lead wires are cut off. Since this cutting process is between takes place at the ends of the die, there is a risk that portions of the ends of the lead wires Sheared wire parts are caught in the finished pressing device, which is un wishes is. Furthermore, a total of two shearing processes are carried out when cutting each end of the wire to size, namely a shearing process with each shear edge of the shear member in cooperation with the facing side of the associated slot of the die. To carry out such a double shearing process considerable force is required.

Finally, with such a shearing process, a piece of wire is produced, the length of which is the width of the slot corresponds to the die, and there is a risk that this piece of wire will get caught in the slot.

The object of the invention is to design a device of the type mentioned so that under Retention of the advantage of the greatest possible overlap of the two conductor wires in the Connecting clamp of the shearing process is made easier and less forceful.

This object is achieved by the features specified in the characterizing part of claim 1.

In the arrangement according to the invention, the shearing processes take place at the ends of the pressure die, so that there is no risk of individual sheared pieces of wire getting into the finished pressure connection can. Furthermore, each lead wire is sheared only at a single point, so that neither one excessive force required to operate the device of the invention is still required as in the case of the above discussed known Vc direction an additional piece of wire is generated. The two rightly - cut wire ends overlap in the connector Completely.

Embodiments of the invention will be described below with reference to an embodiment in connection described in more detail with the drawings.

F i g. 1 is a perspective view of an electrical terminal for pressing a pair of electrical ones Wires before the pressing process;

F i g. Fig. 2 is a perspective view of the clamp pressed against the wires;

F i g. Figure 3 is an elevation view of a first embodiment of a tool for pressing the clip against it Wires with parts broken off;

F i g. 4 is an enlarged partial view of the tool;

F i g. Fig. 5 is an enlarged perspective view illustrating details of the tool;

F i g. 6 is an enlarged perspective view showing further details of the parts shown in FIG

illustrates;

F i g. 7, 8 and 9 are partial cross sections showing operations of parts of the tool;

F i g. 10 is an elevation of two of the components shown in FIG. 5 are shown;

F i g. 11 is a partial perspective view showing shows a modified form of the tool in a particular mode of operation thereof;

FIG. 12 is a view similar to that of FIG F i g. 11, but shows a different operation of the modified form of the tool;

F i g. 13 is a perspective view of an electrical Terminal attached to the wires in accordance with the method of operation according to FIG. 12 is pressed;

F i g. 14 shows, in correspondence with FIGS. 11 and 12 another mode of operation of the modified embodiment of the tool;

FIG. 15 is a perspective view of a clamp pressed against a wire corresponding to FIG in Fig. 14 operation shown; jo

F i g. 16 is a partial longitudinal section taken along lines XVI-XVI of FIG. 18 and corresponds to a second Embodiment of the invention and shows the parts of the tool in a first working position;

FIG. 17 shows, in a view similar to FIG. 16, the Parts of the tool in a second working position;

Figure 18 is a cross section taken along lines XVII-XVII from fig. 16;

19 is a cross-sectional view taken along lines XIX-XIX of FIG. 17;

F i g. 20 is a perspective view of a portion of the tool corresponding to FIGS. 16-19 in FIG apart way.

In the following, reference is made to FIG. 1 referred to. An electrical connection terminal 2 includes a metallic clamp, which consists of a base part 4, from the opposite edges of which side parts 6 extend upwards. A pair of tongues 8 are punched out of the base and each with a pair of Cutouts 10 are provided which run perpendicular to the base part 4. The side parts 6 have the same Way bent parts 7 (only a part is shown), from which pressing tongues 9 are punched out and for Inside of the parts 7 are bent upwards. A film 12 of insulating material, e.g. B. made of polyethylene terephthalate is provided on the outside of the ferrule and extends over the longitudinal edges of the side parts 6 and also beyond the ends of the ferrule. F i g. Figure 2 shows the connecting terminal 2 attached to a pair insulated wires 14 and 16 pressed with the aid of a tool 18, this is now with reference to FIG F i g. 3 to 9 will be described. The tool includes a frame 20 which has a at its upper end Flange 22 and at its lower end (Fig. 3) contains a first handle 24 with a U-shaped cross-section the side parts 26 of which are connected by a base area 28. The side parts 26 run on opposite sides Sides of the frame 20 and are attached to these with rivets 30. A second handle 32 is located with one end 34 between two eyelets 36. which are on a die block 38 (in detail in F i g. 6) are fixed at a distance from one another, and is pivotable on the block 38 with a pin 40 attached, which is inserted through the end 34 of the handle 32 and through the eyelets 36. The ends of the pin 40 protrude beyond the eyelets 36 and carry rollers 4Z which engage the block 38. A cover plate 46 is on the frame 20 above the pin 40 (FIG. 3) Stigt and has a recess 62 (FIG. 4) through which the part 34 of the handle 32 extends. A link 50 is at one end through a pin 52 on the handle 32 and with its other End attached by a pin 54 to the lower (Fig. 3) end of the frame 20 and extends into an in slot 56 located on frame 20. Tool 18 includes a mechanism that includes a gear bar 58 and a ratchet mechanism (not shown) in a housing 60 positioned between the handles 24 and 32 is rotatably mounted. A return spring 61 surrounds the rod 58 and the housing 60.

The block 38 has a die 68 on its upper outer surface (Figures 4, 5, 6) for supporting the connecting clip 2 on. A pressure die 76 cooperates with the die 68 and consists of three juxtaposed Parts 78, 80 and 82 which are fastened to one another by rivets 84 (FIG. 3) and which are attached to the flange 23 with a screw 86 which is screwed into a thread in the central part 80 of the die 76 (FIG. 5) engages, are attached. The parts 78, 80 and 82 together form a die cavity 88, the base area of which consists of parallel, an arcuate cross-section having shaped surfaces 92, which in their center define a vertex 93; to this vertex converge inner side surfaces 90, which after on the outside merge into side surfaces 88 which form a funnel-like opening (FIG. 5). The edges of the Die cavities are beveled at 94. Shear parts 98 and 99 are provided at both ends of the die 76, each of which has a lower portion 102 (Fig. 5) with an elongated notch 104. Every notch 104 has a lower side surface 108 and an upper side surface 110 (FIG. 5). One through block 38 extending pin 106 is received with its ends 107 in the notch 104, so that a delayed Movement connection between the links 98 and 99 and the block 38 is created. At their upper ends (Fig. 5) members 98 and 99 have transverse arms 112, the top surfaces 114 of which have sheared edges which cooperate with the ends of the die 76. The lower surfaces 116 of the arms 112 (FIG. 6) are semicircular and have vertices 117. these surfaces 116 being the same Radii have like the surfaces 92. At their outer ends are the arms 112 with parts 120 of reduced Provided cross-section with which they engage in slots 121 which are located in a guide plate 122 the; this is attached to the frame 20, covers the right outer surface (Fig. 3) of the die 76 and ha Flanges 124 that form guides for the end portions 120 of the arms 112.

Wire receiving plates 126 and 128 are attached to the exterior of links 98 and 99, respectively. The plat th 126 and 128 are preferably made of a robust resilient plastic material, e.g. Building a solid, non-porous polyurethane. The plates 126 and 128 have first slots 130 and 130 'and' second slots 132 and 32 ', with slots 131 and 130' below arms 112 and slots 132 and 132 'are located above arms 112 (Fig. 5). The slots 130 and 132 'are not as deep as i slots 130 'and 132; slots 132 and 132 'ver run into circular bores 134 and are ii On the other hand, the slots 130 and 130 'run parallel to the surface de Die 68 (Fig. 5).

Movement of the handle 32 against the hand

reached 24 from the open position of these handles (I ⁷ i g. 3) causes an upward movement of the block 38 and thus of the die 68 relative to the die 76. In the course of this upward movement of the block 38, the parts 107 of the pins 106 grip the Side surfaces HO of the notches 104 so that the shear parts 98 and 99 move together with the block 38. If the above-mentioned movement of the handle 32 is reversed, the pin lines 107 engage the side surfaces 108 of the notches 104 in the course of the resulting downward movement of the block 38 and bring the shear parts 98 and 99 back into their original positions.

In use, the wire 16 while the handle 32 is in the position shown in FIG. 3 is the position shown in the deeper slots 130 'and 132 are introduced (FIG. 5), so that it can pass through the bore 134 of the slot 132 above the surface 114 of the arm 122 of the shear member 98 and below the most inward arcuate surface 116 of arm 114 of shear member 99 extends. The wire 14 is in the not so deep slots 130 and 132 'inserted, so that it is through the bore 134 of the slot 132' above the Surface 114 of arm 112 of shear member 99 and below the outermost one Surface 116 of arm 112 of shear member 98 extends. The wires are in the slots through the Effect of the elasticity of the material of the plates 126 and 128 are held in place and parallel to each other Levels.

When the wires have been inserted in the manner described above, the connecting terminal 2 is brought onto the die 68 and the handle 32 is moved towards the handle 24, so that the die 68 is moved upwards by one working stroke, the length of which by the one complete Work cycle enforcing mechanism 58, 60 is determined. Initially, the pin 106 is at the bottom of the notches 104 so that the die moves up relative to the arms 112 a distance equal to the height of the notches 104. The parts 107 of the pin 106 then engage the side surfaces 110 of the notches 104, so that the shear parts 98 and 99 are moved upwards together with the die 68, as can be seen in FIG. 5, relative to die 76, until surfaces 114 of shear members 98 and 99 pass the ends of die 76 (Figs. 7 and 8) and cooperate therewith to terminate the ends of wires 14 and 16 in FIG in Fig. 8 so that the wires are cut to the desired length. After this trimming and while the die 68 continues its cycle of operation, the connector clip 2 encloses the cut ends of the wires 14 and 16 which are now within the cavity 88 so that the connector clip 2 is pressed against the cut ends of the wires between the die 68 on the one hand and the mold surfaces of the die 76 on the other hand. During the pressing process, the mold surfaces 92 of the die 76 bend the side parts 6 of the connecting clamp towards its base part 4; the curved parts 7 of these side parts are also moved towards the base part 4 and force the wires into the cutouts 10, the pressure tongues 9 of the side parts 6 serving to hold the wires in the cutouts. As the wires are forced into the cutouts 10, the trailing edges of the cutouts cut through the insulation of the wires and make electrical contact with the conductors located within the wires. The insulating film 12 is clamped between the bent ends of the side parts 6 and forms an insulating sheath for the completed connection.

Since the wires are overlapped in the connecting terminal 2, it becomes safe and electrically effective Connection established with the minimum length of the connecting clamp. In addition, the

ίο cut wire ends in the finished connection completely enclosed by the connecting clamp (Fig. 8 and 9), because the cut to size Wire ends are further inward from the ends of the connector by a width of arms 112.

As the wires run through plates 126 and 128 during cutting and pressing in the desired Position are held, the wires are inserted exactly into the cutouts 10 and can do not cross each other during the operations.

In the following, the F i g. 11 referred to, in which those parts that are identical to those already described have the same reference numerals. In the modified Form of F i g. 11 the seer limbs 98 and 99 are replaced by shear limbs 136 and 137, which at their lower ends 138 have notches 140 (FIG. 11), these notches essentially have the same clear width as the parts 107 of the pin 106, so that the shear members 136 and 137 are with the block 38 constantly move together.

The shear members 136 and 137 have shear arms 142 with lower surfaces (44 and upper surfaces 146 (Fig. 11). The plates 126 and 128 have been replaced by wire guide plates 148 and 150, which are preferably made of the same material as the plates 126 and 128 and attached to the outer sides of the shear members 136 and 137. The plate 148 has a slot 152 and an arm 153 immediately below it (FIG. 11) which engages slot 152 and a lower arm 158 having a bent end 160 which engages an opening (not shown) in the underside of arm 153. Plate 150 has a guide bracket 162 which is identical to guide bracket 154 and which also consists of an arm 164 which engages in a slot 168 in the plate 150 and a lower arm 166 with a bent end 167 which extends into an opening (not shown) in an arm 170 of the Plate 150 engages.

In use, as shown in FIG. 11-11, wire 16 is sandwiched between end 167 of arm 166 and plate 150 and extends across surface 146 of shear member 136 and above bail arm 156 within slot 152 of plate 148.

The wire 14 runs between the end 160 of the bail arm 158, over the side surface 146 of the shear part 137 and through the slot 168 of the plate 150 above the arm 164.

As the die 48 moves up during its working stroke, the wire 14 is cut between the right edge of the die 76 (Fig. 11) and the left edge of the surface 146 of the shear member 137. While the wire 16 is cut between the left Edge of die 76 and the right edge of face 146 of shear member 136 is cut off. The connecting terminal 2 is then pressed between the die 76 on the one hand and the die 68 on the other hand against the cut ends of the wires. the

509 528/20

ίο

Need for a delayed motion link between the die 68 and the shear members 136 and 137 is avoided because the wire pieces between the ends 160 and 167 of the bracket arms 158 and 166 while the plates 148 and 150 move upward (Fig. II) after the Trimming has been carried out. The plates 148 and 150 can move without simultaneous movement of the wires move upwards because of ends 160 and 167 on the one hand and plates 148 and 150 on the other hand formed slots have a sufficient length. The wires can as a result dodge in the direction out of the slots during the final period of the work cycle of the die 68.

According to FIG. 11 modified tool can be used in those described below with reference to FIG Can be used to create an electrical connection between two wires, in which the cut Point the wire ends in the same direction (Fig. 13). The wires 14 and 16 are inserted in such a way that that they extend between the temple end 160 and the plate 148 and through the slot 168 of the plate 150. the Wires are then both placed between the left edge (Fig. 12) of face 146 of shear link 137 and the right edge of the die 76 cut.

According to FIG. The modified tool can also be used to create a T-shaped tap connection (Fig. 15). As in Fig. 14, a continuous wire 170 and a tap wire 172 are laid together between the bail 160 and the plate 148, with the continuous wire 170 being passed between the temple end 167 and the plate 150 and the tap wire 172 being passed through the slot 168 above the arm 164 will. In this case, the tap wire 172 is cut between the left edge (FIG. 14) of surface 146 of shear member 137 and the right edge of die 76. On the other hand, the continuous wire 170 is not cut.

reference is now made to FIGS. 16-20. A tool 218 includes a frame 220 having a first handle 222 seamlessly connected to the frame. A second handle 224 is rotatably attached at its upper end (Fig. 16) to a slide 228 which is supported by the frame 220 , and is also rotatably connected by a link 230 to the handle 222 so that upon movement of the handle 224 on the handle 222 to the sliding body 228 is moved upwards. A cover plate 232 is attached to the right side (Fig. 1b) of the tool, and the handle 224 passes through a slide located therein. The cover plate 232 cooperates with the frame 220 in such a way that a guide for the sliding body 228 is produced. The upper end 236 of the frame 220 has a flange 238 to which a die 240 is attached which is provided with a trough-shaped incision 242 which is shaped in a manner similar to the incision of the die 46 described above. as best seen in Figure 20; the base of the incisions 242 has arcuate shaped surfaces with an apex 248 . The sliding body 228 carries a die 250 with a die surface 25Z which interacts with the die 240 . Aligned shear members 258 and 260 are attached to each side of die 240 and have shear arms 254 and 256 which extend in opposite directions. The shear members 258 and 260 have a width which is substantially less than that of the Matrizcneinschniti 242. The .Scher members 258 and 260 run upward (Fig. 16) in widened ends, with which sic a the flanges 266 and 268 of the Supports 270 and 27, respectively, are attached which are located on each side of the die 24; the supports 270 and 272 are attached to the sliding body 228 with a style 272 so that they can be moved together with the latter. Side panels 27 'and 276 are attached to the frame 220 and are attached

ίο Cutouts 278 and 278 ', so that guides for the supports 270 and 272 arise. From the plates 27 'and 276 extend arms 280 and 280', the underside of which are cut at 284 and 284 ' (FIG. 20). The cuts 284 and 284 ' are recessed at the Stel len 286 and 286' , and the arms 280 and 280 have inwardly projecting latches 282 and 282, respectively. The recessed location 286 is adjacent to the plate 276; the indentation 286 ' is spaced from the plate 274. The recessed portions 286 and 286 'each lie approximately in line with one of the mold surfaces of the die 246 that are on either side of the apex 248 of the die. The locking lugs 282 and 282 ′ engage the surfaces of the shear members 258 and 260. The die 240 and panels 274 and 276 are covered by a front cover panel 288 that is attached to the frame 220 and to the arms 280 and 280 ' as shown in FIG. 20 is shown.

Wire guide plates 292 and 292 'are attached to both ropes of the tool on plates 274 and 276 by means of clips 294 and 294' . The plates 292 and 292 'are provided with slots 296 and 296' respectively on their undersides, and pins 298 and 298 'subdivide the slots 2% and 2%'. so that a pair of adjacent cutouts is created. The guide plates 292 and 292 'are preferably made of the same material as the plates 126 and 128 or 148 and 150 described above.

In use, the tool is first placed in the position shown in FIG. 16 brought the position shown where the sliding body 228 relative to the die 240 is furthest down. The arms 244 and 256 are then located between the die cavity 244 and the die surface 252 and directly above the undeformed connecting clip 2 (FIG. 16) which extends onto the upper

area 252 has been set. The wire 16 is now brought under the ends of the arms 254 and 256 over the arm 256 (FIG. 16) so that it takes the following path (FIG. 20): through the left of the two cutouts defined by the pin 298 , under the arm 280, past the left side of the cutting member 258, through the die cut 242. past the left side of the cutting member 260, above the cutting arm 256. through the recess 286 'and through the left of the two through the pin 298' defined sections. The wire 14 is then inserted in a similar manner, as follows. that he walks past the shear members 258 and 260 on the right and runs through the right th of the two cutouts formed by the pins 298 and 298 ' and through the recess 286. the end

Fig. 18 it can be seen that the wire 16 passes the non-cutting side of the shear member 258, because the arm of the shearing member 258 is located just on the other side, but that it passes the cut side of the shearing part "260th Vice versa

the wire 14 passes the non- cutting side of the shear part 260 and the cutting side of the shear part 258.

The handle 224 now moves towards the handle 222

moves so that the slide body 228 moves up and the die 250 and the shear members 258 and 260 with it. The wires 14 and 16 are cut / wiped between the claws 254 and 256 and the ends of the die 240 , with the overlapping cut wire ends remaining between the die 240 and the die surface 252 and the connecting terminal 2 subsequently through the forming surfaces of the die 240 to the Wire is pressed. The wires 14 and 16 are also inserted between the outer edges of the shear arms 254 and 256 and the subscreens.

The arms 280 and 280 'are cut so that short pieces of wire 14' and 16 '(Fig. 19) are cut from the wires 14 and 16.

An advantage of the embodiment described above is that the threading of the wire is considerably easier than in the case of the ones with reference to FIGS. 3 to 14, since the wires are simply laid on both ropes of the shear parts 258 and 26C and therefore not above and below

ίο must be threaded below the shear links.

In addition 9 sheets of drawings

Claims (14)

Patent claims: 1. Device for pressing a U-shaped electrical connection terminal onto two conductor wires, which are parallel to one another and in overlap with one another in the U-shaped receiving channel of the Connecting clamps are inserted with a pressure die, a pressure die, means for Movement of the pressure die and the pressure die into the pressing of the connecting clamp causing position and out of this, a pair of shear members between the Pressure die and the pressure die are arranged and in the direction of the pressure die are movable in order to shear off at least one conductor wire in cooperation with the pressure die, and with two wire gripping members arranged at the respective shearing positions and each of which has two wire gripping points in such an arrangement that on a first Wire gripping point the held wire is cut off at this first wire gripping point, however, a lead wire gripped at a second wire gripping point not at the second wire gripping point is cut off, characterized in that the shear members (112, 142, 254, 256) each have a shear edge opposite an associated end of the pressure die (76, 240) and that each shear edge with the associated end of the pressure die for cutting off a lead wire cooperates. 2. Apparatus according to claim 1, characterized in that the ends of the die (68) in the axial Direction protrude beyond the ends of the die (76) and that the shear arms (112) with shaped surfaces are equipped, which correspond to those of the die (76), so that the shear arms (112) with the die (68) can cooperate to form the parts of the connecting clamp (2) that go over the ends of the The die (76) protrude and press on. 3. Apparatus according to claim 1 or 2, characterized in that the shear arms (112, 254, 256) are attached to the die (68) and are movable therewith. $ 4 4. Apparatus according to claim 1. 2 or 3. characterized in that wire guide plates (126. 128: 148, 150) are fixed to the shear arms (112, 142) fce and with gripping jaws (30, 132; 152, 154, 160 and 162, 167, 168) are provided on both sides of the die (76) and die (68) so that each Wire (14.16) can be inserted into these gripping jaws and between the die (76) and the die (68) ■ nd runs between one of the shear edges (114, 146) of the shear arms and the die (68). SS 5. Apparatus according to claim 4, characterized in that that the wire guide plates (126, 128: 148,150) formed by plates made of elastic material which extend in the direction of the relative movement of the die (76) and the die (68), and that the gripping jaws pass through slots (130 and 132; 152 and 168) in the wire guide plates are formed. 6. Apparatus according to claim 5, characterized in that that each wire guide plate (126, 128) with a pair of the slots (130, 132; 130 ', 132') is provided that there is a slot (130, 130 ') of a pair of slots between the shear edges (I! 4) and the die (68) and the other slot (132, 132 ') between the shear edges (114) and of the die (76) that these slots are transverse to the direction of the relative movement of the die (76) and the die (68) extend and that the slots have a depth such that a wire (14), the each of the two wire guide plates (126, 128) is pushed into a slot (130, 132 ') as far as it will go is between one of the two shear edges (114) and the die (68) and between the other Shear edge (114) and the die (68) runs and that a second wire (16) that goes into the other Contactor (130 ', 132) each of the two wire guide plates (126, 128) pushed in until it stops is, between the one shear edge (114) and the die (76) and the other shear edge (114) and the die (68) runs. 7. Apparatus according to claim 5, characterized in that each of the two wire guide plates (148, 150) each with a pair of slots (152, 160. 167, 168) is provided. that the one slot (160, 167) of each pair of slots is in the direction of relative movement of the die (76) and die (68) and is open to the die (48) that the other slot (152, 168) is transverse to this direction. 8. Apparatus according to claim 7, characterized in that that the one slot from the wire guide plate (148, 150) on the one hand and from the bent over End (60, 167) of a leg (158, 166) of a substantially U-shaped elastic bracket (154, 162) on the other hand, while the other slot (152, 168) is formed by another Legs (156, 164) of the elastic bracket (154, 162) on the one hand and an inner surface of the wire guide plate (148,150), on the other hand, is formed and transverse to the direction of relative movement of the die (76) and the die (68) runs. 9. Device according to one of claims 1 to 5, characterized in that the die (68) with a sliding body (38) is connected. which can be moved in the direction of the die (76). and that the Shear arms (112) is connected to the die (68) by a coupling with dead zone (104.107). 10. Apparatus according to claim 7 or 8, characterized characterized in that the die (68) is connected to a sliding body (38). the towards a die (76) is movable, and that the shear arms (122) are fixedly connected to the die (68). 11. The device according to claim 1 to 3, characterized characterized in that a support (258, 260) is provided for each shear arm (254, 256), which is in the Direction of relative movement of the die (240) and the die (250) and that each Shear arm (258, 260) consists of a projection at the free end of the associated support, which is transverse to the direction of movement mentioned and on which a shear edge is formed, the as Shear arms acting projections (254, 256) extend in mutually opposite directions. 12. The device according to claim II, characterized in that that each support (258, 260) is connected to a sliding body (228) which the die (250) and is movable in the direction of the die (240), and that the projection (254, 256) opposite end of the support (258, 260) with one on the sliding body ί228ϊ Flange (268) is connected, wherein the flange (268) comprises the side of the die (240) facing away from the die (250) 13. Apparatus according to claim 1 or 12, characterized in that the wire guide plates contain outer plates (292,292 ') extending on each side of the die (240) and die (250) located that the outer panels (292, 292 '* guide slots which extend in the direction of the relative movement of the die (240) and the die (250) that the outer plates (292, 292 ') extend from the ends of the die (240) and the die (250) as seen from behind the shear parts (256, 260 and 254, 258) and that the outer plates (292, 29 ') are firmly anchored in a frame (220) which is at rest with respect to the relative movement remain. 14. The device according to claim \ Z, characterized in that each wire guide plate consists of an outer plate (292, 292 ') with a pair of adjacent slots and an inner plate (274, 276) each having a recess (284) upwards , which with the guide slots in the associated outer plate (292, 292 ') is aligned so that the recess (284) of each of the two inner plates (274, 276) has a recess (286, 286') which with one of the guide slots of the adjacent outer plate (292, 292), whereby one (14) of the wires can be inserted in such a way that it can pass through one of the guide slots of each of the outer plates (292, 292 '), through one of the recesses (286) and between one (254) of the shear arms on the one hand and the die (240) on the other hand, and whereby the other wire (16) can be inserted in such a way that it goes through the other slot of the two outer plates (292, 292 ') through which other recess (286 ') and e.g. wipe the other shear arm (256) on the one hand and the die on the other hand runs through it, each of the two wires (14. 16) one of the recesses (284, 284 ') penetrates at a point where there is no depression.