JP4245110B2 - Automatic wire changer for wire processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides automatic wire replacement in a wire processing machine that supplies a new wire to a wire processing machine when the wire to be processed ends or the wire type changes. apparatus It is about.
[0002]
[Prior art]
As an electric wire processing machine, for example, there is a terminal crimping device that measures the length of an electric wire fed from an electric wire supply reel and cuts it to a predetermined length, and strips the covering portion of the end of the electric wire to crimp the terminal. is there.
[0003]
In addition, the wire replacement work associated with the replacement of another wire supply reel due to the termination of the wire wound on the wire supply reel and the wire replacement work associated with the replacement to another wire supply reel by changing the wire type are facilitated. In order to improve the processing efficiency, there has been proposed an electric wire feeder which can automatically replace electric wires as disclosed in JP-A-59-229250.
[0004]
In other words, the replacement wire is held in advance on one side of the regular wire feeding path, and when replacing the wire, the used wire is pulled out to a predetermined position and returned to the regular wire feeding route. The replacement wire is moved to the normal wire feeding path, the replacement wire is held by a clamp, and the first and second guide nozzles located on the downstream side in the wire feeding direction are retreated. Insert the tip of the replacement wire, and then clamp the replacement wire from both sides with a pair of feed rolls between the guide nozzles. It was configured to be fed to the machine.
[0005]
[Problems to be solved by the invention]
However, according to the wire feeder disclosed in the above publication, when the replacement wire is fed to the wire processing machine on the downstream side in the wire feed direction by the pair of feed rollers, There is a risk that the wire will be caught or buckled, and the feeding of the electric wire may become unstable.
[0006]
Also, a mechanism for clamping the replacement wire, a mechanism for guiding the replacement wire clamped by the clamping mechanism into the first and second guide nozzles, and a pair of feeds for feeding the wire to the wire processing machine side A roller or the like is required, resulting in a complicated structure and a high cost.
[0007]
Therefore, in view of the above problems, the present invention simplifies the structure. As well as An object of the present invention is to provide an automatic electric wire exchange apparatus in an electric wire processing machine, which is intended to improve stability and reduce costs when electric wires are fed at the time of electric wire exchange and to reduce the size of the entire apparatus.
[0008]
[Means for Solving the Problems]
The technical means for achieving the above object is that an electric wire processing machine for processing an electric wire grips the electric wire in a releasable manner. The part is on the downstream side in the wire feeding direction The wire gripping mechanism and the wire gripping mechanism Of the gripping part Electric wire in an electric wire processing machine provided with a processed electric wire supply / discharge mechanism for supplying and discharging electric wires held by the electric wire holding mechanism in a released state to the processing unit, and an exchange electric wire supply mechanism for supplying replacement electric wires In the automatic exchanging device, the wire gripping mechanism includes a wire guide posture that is operated close to each other so that the wire can be fed to a portion located upstream of the processed wire feeding / discharging mechanism in the wire feeding direction, A pair of split holding means that can be moved to and away from the holding release postures that are operated to be separated from each other to release the holding are provided. Spaced apart in the longitudinal direction Grip releasably Twin A clamp portion, Twin The clamp is Twin A position where the replacement electric wire gripped by the clamp portion is supplied and delivered between the pair of split holding means in the holding release posture of the pair of split holding means and a position retracted from between the pair of split holding means It is possible to reciprocate to the replacement wire standby position where the replacement wire is held by In the grip release state of the gripping portion in the wire gripping mechanism, and In the wire guide posture of the pair of split holding means, Twin The replacement electric wire delivered from the clamp portion can be fed to the processing portion by the processed electric wire supply / discharge mechanism.
[0009]
In addition, the processed wire feeding / discharging mechanism includes a pair of wire feeding portions that can be releasably clamped from both sides, and each wire feeding portion feeds the wires in the wire feeding direction. The electric wire gripping mechanism allows the held electric wire to be fed and discharged by the processed electric wire feeding / discharging mechanism. An electrical wire feeding position, a retracted position retracted to one side from the electrical wire feeding position by the processed electrical wire feeding and discharging mechanism, Twin It is possible to move to the replacement wire delivery position where the replacement wire is delivered by the clamp portion, and the wire gripping mechanism is moved to the wire feeding position in the separated state of the pair of wire feeding portions. By Twin The downstream end of the replacement wire that has been delivered from the clamp unit is movable between the pair of wire feeding units, and the replacement wire can be moved by the close operation of the pair of wire feeding units. The downstream end may be sandwiched.
[0010]
Furthermore, the pair of split holding means includes an electric wire guide block arranged oppositely on the downstream end side in the electric wire feeding direction, and the electric wires are respectively arranged on opposite surfaces of the electric wire guide blocks facing each other along the electric wire feeding direction. The guide surfaces of the wire guide blocks facing each other in the wire guide attitude of the pair of split holding means are brought into contact with each other, and the wires are guided by loose insertion through the wire guide grooves. It is good also as a structure where an electric wire loose insertion hole is formed.
[0011]
The pair of split holding means further includes an electric wire guide block arranged to face the upstream end side of the electric wire feeding direction, and the upstream end side electric wire guide block and the downstream side electric wire guide block. A length measuring roller, which is positioned between them, is slidably contacted to the other side of the electric wire and a length measuring roller that is slidably contacted to one side of the electric wire and is rotated by a predetermined angle. It is good also as a structure provided with the driven body supported movably, respectively, and the electric wire being hold | maintained by the said length measuring roller and the said driven body by the said electric wire guide attitude | position of a pair of division | segmentation holding means.
[0012]
In addition, a roller group for wire drawing is disposed along the wire feeding direction on the pair of divided holding means, located upstream of the length measuring roller in the wire feeding direction, and each wire drawing The roller group may be displaced along the wire feeding direction, and the wire may be held in a sandwiched manner by the two drawing roller groups in the wire guide posture of the pair of split holding means.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a terminal crimping device as an example of a wire processing machine, and a wire length measuring device having a front clamp 2 as a wire holding mechanism. Mainly composed of a long unit 3, a cutter unit 4 as a processing section, a rear clamp 5, a front terminal crimping unit 6, a rear terminal crimping unit 7, a front moving means 8, and a rear moving means 9. Yes.
[0017]
The front clamp 2 and the rear clamp 5 are configured to be able to releasably hold (and hold) the electric wire 10, and the cutter unit 4 is configured to perform a cutting process of the electric wire 10 and a stripping process of the covering portion. ing.
[0018]
The length measuring unit 3 feeds the electric wire 10 along the electric wire feeding direction P, and discharges the electric wire 10 in the opposite direction, and a processed electric wire feeding / discharging mechanism. 11 and a length measuring mechanism 12 that measures the length of the electric wire 10 fed by the wire 11, and the length measuring mechanism 12 is arranged on the upstream side of the processed wire feeding / discharging mechanism 11 in the wire feeding direction P. The processed wire feeding / discharging mechanism 11 is fixedly attached to the gantry 13 of the terminal crimping apparatus 1, and the front clamp 2 and the length measuring mechanism 12 can be integrally moved and operated by the front moving means 8 attached and fixed to the gantry 13. It is supported by. Here, an electric wire gripping mechanism 14 for releasably gripping the electric wire 10 is constituted by the front clamp 2, the length measuring mechanism 12, and the like.
[0019]
The front moving means 8 supports the front clamp 2 and the length measuring mechanism 12 so as to be movable between the cutter unit 4 position and the front terminal crimping unit 6 position. At 6 positions, it is supported so as to be movable in the direction of the cutter unit 4 and the direction of the front terminal crimping unit 6. That is, the front clamp 2 and the length measuring mechanism 12 are supported so as to be movable and movable in a horizontal direction perpendicular to the wire feeding direction P and the wire feeding direction P.
[0020]
The rear moving means 9 supports the rear clamp 5 so as to be movable between the cutter unit 4 position and the rear terminal crimping unit 7 position, and at the cutter unit 4 position or the rear terminal crimping unit 7 position. The cutter unit 4 is supported so as to be movable in the direction of the cutter unit 4 and the rear terminal crimping unit 7. That is, the rear clamp 5 is supported so as to be movable in the electric wire feeding direction P and the horizontal direction perpendicular to the electric wire feeding direction P.
[0021]
Then, the electric wires 10 fed for a predetermined length along the electric wire feeding direction P by the length measuring unit 3 are respectively held by the front clamp 2 and the rear clamp 5 and are cut by the cutter unit 4 in this state. The electric wire 10 held by the front clamp 2 and the electric wire 10 held by the rear clamp 5 are separated into the electric wires 10 and the terminal portions of the electric wires 10 held by the clamps 2 and 5 are then covered by the cutter unit 4. Is stripped.
[0022]
The electric wire 10 gripped by the front clamp 2 is then moved to the position of the front terminal crimping unit 6, and the terminal is crimped to the covering stripped portion by the front terminal crimping unit 6. After the terminal crimping process, the electric wire 10 held by the front clamp 2 is returned to the initial position facing the cutter unit 4.
[0023]
On the other hand, while the terminal 10 is crimped to the electric wire 10 on the front clamp 2 side, the electric wire 10 on the rear clamp 5 side is also moved to the position of the rear terminal crimping unit 7. Then, the electric wire 10 is discharged to a predetermined electric wire discharge portion, and the rear clamp 5 is returned to the initial position facing the cutter unit 4.
[0024]
Then, as described above, by the operation of the length measuring unit 3, the electric wire 10 is fed for a predetermined length along the electric wire feeding direction P, and by repeating the same operation, the predetermined electric wire length in which the terminals are crimped to both ends. Are sequentially manufactured.
[0025]
A pre-feeder mechanism or the like for guiding the electric wire 10 fed from an electric wire supply reel or the like is appropriately arranged on the upstream side of the length measurement unit 3 in the electric wire feeding direction P as necessary.
[0026]
As shown in FIGS. 2 to 4, the machined electric wire supply / discharge mechanism 11 includes a substrate 15 that is mounted and fixed in an upright manner on a gantry 13, and a predetermined interval in the vertical direction is provided on one side of the substrate 15. Drive rollers 16 and 17 are provided that are spaced apart from each other and rotatably supported.
[0027]
Further, on the other side surface of the substrate 15, there are provided driven pulleys 20, 21 that are connected to the driving rollers 16, 17 via support shafts 18, 19 and are rotated together with the driving rollers 16, 17. It has been.
[0028]
Further, on the other side of the substrate 15, a servomotor 22 that can be driven forward and backward is provided. A drive pulley 23 mounted on a drive shaft of the servomotor 22, the driven pulleys 20 and 21, a relay pulley 24, and a tension A drive belt 26 is wound around the pulley 25 so as to be freely circulated. At this time, the driven pulleys 20 and 21 and the driving pulley 23 are timing pulleys, the driving belt 26 is a timing belt having teeth formed on both sides, and the driving rollers 16 and 17 are driven to rotate in opposite directions. It is wound around. The tension pulley 25 is provided so as to be movable and adjustable so as to apply a predetermined tension to the drive belt 26.
[0029]
A pair of guide rods 28 are disposed on one side of the drive rollers 16 and 17 with a predetermined interval in the electric wire feeding direction P and with an axis in the vertical direction. The support bases 29 and 30 are slidably mounted on the guide rods 28 in the vertical direction.
[0030]
Further, an operation cylinder 31 made of an air cylinder or the like is mounted on the other side of the substrate 15, and one end portions of a pair of interlocking rods 33 are rotatable relative to an operation body 32 mounted on the piston rod tip of the operation cylinder 31. Are pivotally connected, and the other end of each interlocking rod 33 is pivotally connected to the support bases 29 and 30 through an opening 15 a formed in the substrate 15.
[0031]
The support bases 29 and 30 are configured so as to be able to be contacted and separated in the vertical direction along the guide rods 28 through the interlocking rods 33 by the expansion and contraction operation of the operation cylinder 31.
[0032]
A plurality of driven rollers 34 a, 34 b, 34 c, 35 a, 35 b, and 35 c are rotatably supported on the support bases 29, 30 on opposite sides, and supported by the support bases 29. , 30, tension rollers 36 and 37 are mounted on the side opposite to the side so as to be movable and adjustable. At this time, the driving rollers 16 and 17, the driven rollers 34a, 34b, 34c, 35a, 35b, and 35c, and the tension rollers 36 and 37 are disposed in the same plane. Further, the driven rollers 34a, 34b, and 34c are arranged so that the lower ends thereof have the same height, and the upper ends of the driven rollers 35a, 35b, and 35c are arranged to have the same height.
[0033]
Then, the feeding belts 38 and 39 made of urethane belts are wound around the upper and lower driving rollers 16 and 17, the driven rollers 34 a, 34 b, 34 c, 35 a, 35 b and 35 c, and the tension rollers 36 and 37, respectively, so that they can circulate freely. It is disguised. At this time, appropriate tension is applied to the feeding belts 38 and 39 by adjusting the positions of the tension rollers 36 and 37.
[0034]
In addition, the feeding belts 38 and 39 can be freely contacted and separated by the contact / separation operation of the support bases 29 and 30 by the expansion / contraction operation of the operation cylinder 31, and the driven rollers 34a, 34b, 34c, 35a, 35b, and 35c can be operated. The electric wire 10 is configured to be releasably clamped from both the upper and lower sides by the feeding belts 38 and 39 therebetween. Then, in this clamping state, the feeding belts 38 and 39 are circulated in a predetermined direction, whereby the electric wires 10 are sequentially fed along the electric wire feeding direction P and circulated in the opposite direction. Thus, the electric wire 10 is returned in the direction opposite to the electric wire feeding direction P and discharged. Here, the drive rollers 16 and 17, the driven rollers 34 a, 34 b, 34 c, 35 a, 35 b and 35 c, the tension rollers 36 and 37, the feeding belts 38 and 39, etc. constitute a pair of electric wire feeding units.
[0035]
As shown in FIGS. 5 and 6, the front clamp 2 and the length measuring mechanism 12 are respectively mounted in the longitudinal direction of the support member 41 that is long in the wire feeding direction P, as shown in FIG. As described above, the electric wire feeding unit is located between the front clamp 2 and the length measuring mechanism 12. That is, the length measuring mechanism 12 is located upstream of the wire feeding direction P of the wire feeding portion in the processed wire feeding / discharging mechanism 11, and the front clamp 2 is located downstream of the wire feeding direction P of the wire feeding portion. It is configured.
[0036]
For example, the front clamp 2 has a structure in which the electric wire 10 passing through the electric wire guide hole 43 is gripped in a releasable manner by pressing the electric wire 10 passing through the electric wire guide hole 43 on one side surface in the electric wire guide hole 43 by the operation of an actuator such as an air cylinder. Yes.
[0037]
Further, on the upstream side of the wire feeding direction P in the support member 41 to which the length measuring mechanism 12 is mounted, as shown in FIG. 5 and FIG. A rail body 44 having a center is mounted, and a pair of upper and lower support bases 45 and 46 straddling the rail bodies 44 are supported by being slidably fitted in the vertical direction via shoe bodies 47 and 48. Yes.
[0038]
As shown in FIG. 7, each of the support bases 45 and 46 is always elastic in a pair of support pieces 49 and 50 mounted on the support member 41 side in directions away from each other via tension springs 51 and 52, respectively. The structure is energized. Each of the support pieces 49 and 50 is provided with stoppers 53 and 54 which are in contact with the support tables 45 and 46 so as to be able to come into contact with and separate from each other and restrict movement of the support tables 45 and 46 by the tension springs 51 and 52, respectively. Adjustable.
[0039]
Further, as shown in FIG. 8, the support member 41 is provided with an operation cylinder 55 made of an air cylinder or the like, and the upper and lower inclined cam surfaces 56 a of the cam body 56 attached to the operation cylinder 55 are provided on the support member 41. The cam body is slidably brought into contact with the cam pins 45a and 46a having a circular cross section projecting from the support bases 45 and 46 through the formed guide holes 41a in the vertical direction. As shown by the phantom lines in FIG. 8, the cam body 45 moves forward, and as the cam body 56 moves, the cam pins 45a and 46a are moved closer to each other as shown by the phantom lines. 46 are operated to approach each other against the tensile force of the tension springs 51 and 52.
[0040]
Further, the cam body 56 is moved backward as shown by the solid line in FIG. 8 by the backward operation of the operation cylinder 55, and the cam pins 45a, 46a are driven by the tensile force of the tension springs 51, 52 as the cam body 56 moves. Are separated from each other as indicated by the solid line, and the two support bases 45 and 46 are separated from each other.
[0041]
As described above, the upper and lower support bases 45 and 46 are configured to be able to be brought into and out of contact with each other under the guidance of the rail body 44 by the operation of the operation cylinder 55.
[0042]
As shown in FIGS. 9 and 10, the length measuring mechanism 12 is in contact with the lower surface side as one side of the electric wire 10 supplied along the electric wire feeding direction P so as to be able to roll freely. And a driven roller body 59 as a driven body slidably abutted on the upper surface side as the other side of the electric wire 10. Further, the length measuring roller 58 is rotatably supported on the lower support base 46, and a rotary type encoder 60 for length measurement is directly connected to detect the amount of rotation of the length measuring roller 58. It is configured.
[0043]
On the other hand, the driven roller body 59 is supported by the upper support 45 via the support bracket 61 so as to be movable up and down, and is always urged downward by the urging spring 62. Under the urging force of 62, it is possible to move up and down.
[0044]
Further, the wire guide blocks 64a, 64b, 65a disposed opposite to each other at the ends of the support bases 45, 46 located on the upstream side and the downstream side in the wire feeding direction P of the length measuring roller 58 and the driven roller body 59, respectively. , 65b, and semi-circular wire guide grooves 64c, 65c for guiding the wire 10 along the wire feeding direction P are formed on the opposing surfaces of the wire guide blocks 64a, 64b, 65a, 65b facing each other. When the support bases 45 and 46 are operated to approach each other, the opposing surfaces of the wire guide blocks 64a, 64b, 65a and 65b are brought into contact with each other, and the wire 10 is loosely inserted by the wire guide grooves 64c and 65c facing each other. A circular electric wire insertion hole for guiding is formed.
[0045]
In addition, the support bases 45 and 46 positioned between the length measuring roller 58 and the driven roller body 59 and the wire guide blocks 64a and 64b on the upstream side in the wire feeding direction P eliminate the curl etc. of the wire 10. The wire drawing roller groups 66 and 67 constituting the wire drawing mechanism for rolling are supported so as to be freely rollable along the wire feeding direction P, and are also supported by the support bases 45 and 46, respectively. The roller groups 66 and 67 are disposed at an appropriate distance from each other along the wire feeding direction P. When the two support bases 45 and 46 are operated to approach each other, the wire drawing roller groups 66 and 67 cause the wire feeding direction. A zigzag-shaped wire guide path is formed along P.
[0046]
In the present embodiment, the upper drawing roller group 66 is supported on the upper support 45 via the support bracket 68 so as to be movable up and down in order to correspond to various diameters of the electric wires 10. The urging spring 69 is always urged downward, and can be moved up and down under the urging force of the urging spring 69.
[0047]
As shown in FIGS. 9 and 10, the driven roller body 59 is pivotally supported by the support bracket 61 via a support shaft 71, and is protruded at one end of a regulation pin 72 fitted in an outer peripheral portion. Is fitted in a rotation amount regulating groove 61a formed in the support bracket 61 so as to be relatively slidable. The rotation amount restricting groove 61a is formed in an arc having an appropriate length with the axis of the support shaft 71 as the center, and the driven roller body 59 is within the range of relative sliding between the restricting pin 72 and the rotation amount restricting groove 61a. The rotation range of the driven roller body 59 is restricted to a fixed angle.
[0048]
Further, a spring support pin 73 is provided on the support bracket 61 side and is located above the driven roller body 59, and a tension spring 74 made of a coil spring or the like is stretched between the spring support pin 73 and the other end protruding portion of the restriction pin 72. The driven roller body 59 is constantly rotated and urged around the support shaft 71 and in the direction opposite to the electric wire feeding direction P by the tensile force of the tension spring 74.
[0049]
In the wire guide posture in which the support bases 45 and 46 are operated close to each other, the wire guide grooves 64c of the wire guide blocks 64a, 64b, 65a, 65b on the upstream side and the downstream side of the wire feeding direction P, The electric wire 10 is guided by the electric wire insertion hole formed by 65c, and the electric wire 10 is vertically measured between the electric wire guide blocks 64a, 64b, 65a, 65b on the upstream side and the downstream side in the electric wire feeding direction P. The roller 58 and the driven roller body 59 are held in a sandwiched manner, and are held in a sandwiched manner by the upper and lower drawing roller groups 66 and 67.
[0050]
Further, as shown in FIG. 6, in the holding release posture in which the support bases 45, 46 are operated to be separated from each other, the wire guide blocks 64 a, 64 b, 65 a, 65 b, the wire drawing roller groups 66, 67. Then, the driven roller body 59 and the length measuring roller 58 are spaced apart from each other by a predetermined length, and the holding of the electric wire 10 is released.
[0051]
Here, the upper support 45 provided with the wire guide blocks 64a and 65a, the wire drawing roller group 66 and the driven roller body 59, the wire guide blocks 64b and 65b, the wire drawing roller group 67 and the length measurement. A pair of divided holding means 75 that can be moved toward and away from each other are constituted by a lower support base 46 provided with rollers 58 and the like.
[0052]
As shown in FIGS. 5 and 6, a pair of shoe bodies 76 are fixedly attached to and fixed to one side of the intermediate portion of the support member 41 in the electric wire feeding direction P, as shown in FIGS. A pair of rail bodies 78 having axial centers in the vertical direction provided on one side surface of the mounting bracket body 77 are slidably fitted along the vertical direction and supported.
[0053]
Further, as shown in FIG. 11, a support plate 79 is provided so as to protrude from one side of the lower end portion of the mounting bracket body 77, and a pair of guide pins 80 projecting upward from the support plate 79 is provided as a support member. 41. A biasing spring 82 made of a coil spring or the like as a return spring is compressed on each guide pin 80 which is fitted into a guide plate 81 provided in a protruding shape at the lower end of the guide pin 80 and located between the support plate 79 and the guide plate 81. It is installed in a state.
[0054]
Further, the support member 41 is provided with a return adjustment pin 83 projecting upward, and the upper end portion of the return adjustment pin 83 is provided so as to protrude from the upper end portion of the mounting bracket body 77 to one side. 84 is inserted.
[0055]
The upward return amount of the support member 41 due to the urging force of each urging spring 82 is determined by the nut body 85 screwed and attached to the return adjustment pin 83 so as to be able to advance and retreat, in contact with the lower surface of the guide plate 84. Be regulated.
[0056]
Further, the base 77 a of the mounting bracket body 77 is fixedly attached to a moving operation unit (not shown) that is moved by the front moving means 8.
[0057]
Reference numeral 87 in FIG. 6 denotes a guide hook body, which is fixedly attached to the support member 41, is engaged when the terminal is crimped by the front terminal crimping unit 6, and is linked to the crimping operation of the terminal to support the support member. 41 is configured to move downward against the urging force of each urging spring 82.
[0058]
Further, as shown in FIGS. 1, 12 to 14, a support rod 89 is erected on the gantry 13 on the upstream side of the wire feeding direction P of the processed wire feeding / discharging mechanism 11. An exchange wire supply mechanism 90 for supplying the exchange wire 10 is provided.
[0059]
The exchange wire supply mechanism 90 is attached to the upper end portion of the support rod 89 via a mounting bracket 93, and has an operation cylinder 91 including an air cylinder having a rod 91a that can be freely moved up and down, and a protrusion of the rod 91a. A clamp mechanism 92 is attached to the lower end of the rod 91a, which is an end, and can be moved up and down by the operation of the rod 91a.
[0060]
Also, the clamp mechanism 92 is lifted and lowered in the wire feeding direction P so as to hold the lifting base 94 attached to the lower end of the rod 91a and the replacement wire 10 in the longitudinal direction so as to be releasable. A pair of clamp portions 95 mounted on the base 94 and a pair of release cylinders 96 made of an air cylinder or the like for releasing the grip of the replacement electric wire 10 by each clamp portion 95 are provided.
[0061]
As shown in FIG. 14, each clamp portion 95 includes an upper fixed claw 95a fixed to the lifting platform 94, and a movable claw 95b that can be contacted and separated from the lower side of the fixed claw 95a. Each movable pawl 95b is fixed to a lower end portion of a guide pin 98 that is slidably inserted in a vertical direction in a guide tube 97 protruding from the pawl 95a.
[0062]
In addition, a return spring 100 made of a coil spring is attached as a sleeve between the spring receiving plate 99 attached to the upper end portion of each guide pin 98 and the upper end portion of the guide tube 97, so that the guide pin 98 is always in the upward direction. The movable pawl 95b is constantly biased in the direction of the fixed pawl 95a. Then, by using the knob portion 101 provided at the lower end portion of the guide pin 98, the guide pin 98 is pulled down against the urging force of the return spring 100, so that the interval between the fixed claw 95a and the movable claw 95b is increased. Here, the replacement electric wire 10 can be gripped between the fixed claw 95a and the movable claw 95b.
[0063]
Above the guide pin 98, a rod pin 96a of the release cylinder 96 is provided with a slight gap so as to be freely retracted and retracted, and the guide pin 98 is pushed down by the advancing operation of the rod pin 96a. Is configured to be released.
[0064]
In addition, a guide body 102 that guides the vertical movement of the movable pawl 95b and regulates the insertion amount of the electric wire 10 inserted between the pawls 95a and 95b is provided at a predetermined position of each fixed pawl 95a.
[0065]
Furthermore, a positioning stopper 103 is provided on the lifting platform 94 located on the downstream side in the electric wire feeding direction P in order to position the tip of the replacement electric wire 10 held by both the clamp portions 95.
[0066]
A pair of guide rods 104 project upwardly from the lifting table 94 so as to be separated from each other in the wire feeding direction P in order to regulate the rotation of the operation cylinder 91 about the axis when the lifting table 94 is lifted. The guide rod 104 is configured to be slidably guided in the vertical direction within each guide cylinder 105 provided in the mounting bracket 93. Note that the upper ends of the guide rods 104 are connected to each other with a connecting member 106 that avoids interference with the operation cylinder 91 while maintaining parallelism.
[0067]
And in this embodiment, the clamp part 95 of both sides is respectively shown in the electric wire feeding direction P upstream and downstream of each electric wire guide block 64a, 64b, 65a, 65b, as shown by the virtual line of FIG. In addition to being configured to be positioned, the grip side of the electric wire 10 with respect to each clamp portion 95 is a side on which the electric wire gripping mechanism 14 is moved.
[0068]
Further, as shown by the phantom lines in FIG. 13, the electric wire gripping mechanism 14 is based on the electric wire feeding position A where the held electric wire 10 is fed and discharged by the processed electric wire supply / discharge mechanism 11 and the processed electric wire supply / discharge mechanism 11. The retraction position B is retracted to one side from the wire feeding position A, and the replacement wire delivery position C to which the replacement wire 10 is delivered by the pair of clamp portions 95 is movable.
[0069]
On the other hand, the clamp part 95 supplies the exchange electric wire 10 between the pair of divided holding means 75 at the exchange electric wire delivery position C of the electric wire gripping mechanism 14 and delivers the exchange electric wire 10 to the upper part. It can be moved up and down (reciprocating) at an exchange wire standby position E that holds and waits for the exchange wire 10 indicated by a solid line, and the lift position of the clamp portion 95 is the wire feed to which the wire 10 is fed. The structure is located one side of the feeding path by a predetermined distance.
[0070]
Next, the length measuring operation by the length measuring unit 3 will be described. As shown in FIG. 2, the processed wire feeding / discharging mechanism 11, the front clamp 2 and the length measuring mechanism 12 are in the initial length measuring direction along the wire feeding direction P. In the state, the electric wire 10 is clamped between the upper and lower delivery belts 38 and 39 in the processed electric wire supply / discharge mechanism 11, the electric wire 10 is released from the grip by the front clamp 2, and the length measuring roller 58 is The electric wire 10 is sandwiched between the driven roller body 59 and the driven roller body 59.
[0071]
In this state, when the servo motor 22 is driven, the driving rollers 16 and 17 are rotationally driven in predetermined directions via the driving pulley 23, the driving belt 26, the driven pulleys 20 and 21, and the like. Each of the delivery belts 38 and 39 is circulated and circulated in a predetermined direction with the rotation of 17, and the electric wires 10 are sequentially fed along the electric wire feeding direction P with the circulation of each of the delivery belts 38 and 39. The
[0072]
The length measuring roller 58 is rotationally driven along with the feeding of the electric wire 10 along the electric wire feeding direction P, the amount of rotation of the length measuring roller 58 is detected by the encoder 60, and the length of the fed wire is sequentially measured. Lengthened. At this time, since the rotation angle of the driven roller body 59 positioned on the upper side is restricted to a constant angle, the driven roller body 59 is rotated around the support shaft 71 after being rotated by the constant angle against the urging force of the tension spring 74. The rotation of the electric wire 10 to be prevented is fed along the electric wire feeding direction P while slipping. Here, the electric wire 10 is fed along the electric wire feeding direction P by the feeding belts 38 and 39 in a state where a certain amount of tension is applied to the electric wire 10.
[0073]
Thereafter, when the predetermined amount is fed by the servo motor 22 and compared with the amount detected by the encoder 60, if the excess or deficiency is sent, the driving of the servo motor 22 is stopped. The circular rotation of is stopped. In this case, the rotation of one driven roller body 59 in the length measuring roller 58 and the driven roller body 59 that are feeding and guiding the electric wire 10 as a pinched state is in a stopped state, and the electric wire 10 is pulled out while slipping. The pull-out of the electric wire 10 is stopped by stopping the delivery belts 38 and 39, and overrun due to the inertia of the length measuring roller 58 can be effectively prevented.
[0074]
When the servo motor 22 is stopped, the electric wire 10 is gripped by the front clamp 2. In the processed wire supply / discharge mechanism 11, the support bases 29 and 30 are vertically separated by the operation of the operation cylinder 31 via the interlocking rods 33, and the two delivery belts 38 and 39 are separated from each other. Then, the holding state of the electric wire 10 by both the delivery belts 38 and 39 is released.
[0075]
By releasing the holding state of the electric wire 10 by the both delivery belts 38 and 39, the driven roller body 59 is rotated around the support shaft 53 in the direction opposite to the electric wire feeding direction P by the tensile biasing force accumulated in the tension spring 74. The electric wire 10 is held in a state where a certain tension is applied by applying a pulling force to the electric wire 10 between the position of the front clamp 2 and the positions of the length measuring roller 58 and the driven roller body 59.
[0076]
Thereafter, as described above, the cutter unit 4 performs cutting processing, and the covering portion of the electric wire 10 terminal portion is stripped. Thereafter, the electric wire 10 held by the front clamp 2 and the length measuring mechanism 12 by the front moving means 8 is moved to the position of the front terminal crimping unit 6 and returned to the initial position after the terminal crimping process. At this time, the electric wire 10 held between the front clamp 2 and the length measuring mechanism 12 is in a state of being stretched with a certain tension applied, and between the sending belts 38 and 39 that are separated from each other up and down the processed electric wire supply / discharge mechanism 11. It is guided smoothly.
[0077]
Thereafter, the front clamp 2, the wire feeding section of the processed wire feeding / discharging mechanism 11, and the length measuring mechanism 12 are returned to the above-described length measuring initial state, and the same operation is repeated.
[0078]
Next, the exchange operation | movement at the time of line | wire type exchange of the electric wire 10 by the exchange electric wire supply mechanism 90 concerning this embodiment is demonstrated.
[0079]
When the predetermined processing by the terminal crimping apparatus 1 is completed and the electric wire 10 is replaced, the electric wire gripping mechanism 14 is located at the electric wire feeding position A and is used until just before that as shown in FIG. The electric wire 10 in the middle is sandwiched between the sending belts 38 and 39 of the pair of electric wire feeding sections, and is gripped by the front clamp 2 on the downstream side in the electric wire feeding direction P, and on the upstream side in the electric wire feeding direction P. It is held by the division holding means 75. Further, the replacement electric wire 10 is held in advance over the clamp portions 95 of the replacement electric wire supply mechanism 90.
[0080]
Next, when an electric wire replacement signal is input by operating a switch provided as appropriate, the gripping of the electric wire 10 by the front clamp 2 is released, and the cam body 56 is moved backward by the operation of the operating cylinder 55 to divide both. As shown in FIG. 16, the holding means 75 is released from the holding operation, and the holding of the electric wire 10 by both the divided holding means 75 is released.
[0081]
In this state, the pair of wire feeding portions are driven in reverse rotation, and the electric wires 10 are vigorously discharged in the direction opposite to the wire feeding direction P by the reverse driving of both the sending belts 38 and 39. It is discharged from the gripping mechanism 14 to the upstream side in the wire feeding direction P.
[0082]
After the electric wire 10 is discharged, the electric wire gripping mechanism 14 is moved to the retracted position B by the front moving means 8.
[0083]
When the wire gripping mechanism 14 moves to the retracted position B, each clamp portion 95 that grips the replacement wire 10 is lowered to the replacement wire supply position D by the operation of the operation cylinder 91 as shown in FIG.
[0084]
When each clamp portion 95 moves to the replacement wire supply position D, the wire gripping mechanism 14 at the retracted position B is moved to the replacement wire delivery position C, and is positioned between the clamp portions 95 as shown in FIG. The electric wire 10 is relatively guided between the two divided holding means 75 of the electric wire gripping mechanism 14.
[0085]
In this state, the cam body 56 is advanced and moved by the operation of the operation cylinder 55 so that the two divided holding means 75 are operated to approach each other. As shown in FIG. A state in which it can be fed is obtained. When the electric wire 10 is held by the both divided holding means 75, the release cylinders 96 are operated, the guide pins 98 are pushed down by the lowering of the rod pins 96a, and the holding of the electric wires 10 by the clamp portions 95 is released. . Here, the replacement electric wire 10 is transferred from each clamp portion 95 to each divided holding means 75.
[0086]
When the electric wire 10 is transferred to each divided holding means 75, the electric wire gripping mechanism 14 is moved to the retracted position B again. When the wire gripping mechanism 14 moves to the retracted position B, the rod pins 96a are raised and returned by the operations of the release cylinders 96, and the clamp portions 95 are moved to the initial position by the operation of the operating cylinder 91. Returned to the rise. Further, the next replacement wire 10 may be appropriately held by each clamp portion 95 returned to the replacement wire standby position E.
[0087]
When each clamp part 95 moves to the replacement electric wire standby position E, the retracted position is brought into the electric wire feeding position A where the pair of electric wire feeding parts are waiting in the separated state of the two feeding belts 38 and 39 that are previously separated. The wire gripping mechanism 14 waiting in B is moved and operated, and as shown in FIG. 19, the end on the downstream side of the wire feeding direction P of the wire 10 delivered to the split holding means 75 is a pair of wire feeding. The state located between the two delivery belts 38 and 39 in the section is obtained.
[0088]
Next, a state in which the pair of wire feeding portions is operated to approach from this state, and the downstream end portion of the wire 10 in the wire feeding direction P is sandwiched between the sending belts 38 and 39, where the wire 10 The replacement work is completed.
[0089]
Then, in this state, when the pair of wire feeding units is driven forward, the wires 10 are sequentially fed along the wire feeding direction P by the forward drive of both the feeding belts 38 and 39, as described above. The electric wire 10 can be processed.
[0090]
The present embodiment is configured as described above. When the electric wire 10 is exchanged, the replacement electric wire 10 previously grasped by both the clamp portions 95 of the exchange electric wire supply mechanism 90 is operated to be separated from the electric wire grasping mechanism 14. Then, it is guided between both split holding means 75 and delivered to both split holding means 75, and the wire gripping mechanism 14 in a state where the replacement electric wire 10 has been transferred is moved to the electric wire feeding position A, and the pair of electric wires are fed. It is only necessary to sandwich the feeding belts 38 and 39 between the feeding belts and feed them sequentially by forward rotation of the feeding belts 38 and 39, and it is necessary to feed them separately to the wire processing machine side using a feeding roller or the like as in the prior art. Therefore, the conventional catching and buckling during feeding can be effectively prevented, and the stability during feeding of the wire 10 when the wire 10 is replaced can be improved.
[0091]
Further, the electric wire 10 is directly delivered from both clamp portions 95 to both split holding means 75 of the electric wire gripping mechanism 14 in the terminal crimping apparatus 1, and the feed for separately feeding to the electric wire processing machine side as in the prior art. A roller or the like is unnecessary, so that the structure can be simplified and the cost can be reduced.
[0092]
Further, the electric wire 10 is directly transferred from both the clamp portions 95 to the both split holding means 75 of the electric wire gripping mechanism 14, and there is no need for a separate feeding path with a conventional feed roller or the like, and the entire apparatus 1 is as a whole. Can be made compact.
[0093]
Further, the rotation of one driven roller body 59 of the length measuring roller 58 and the driven roller body 59 that guides the feeding with the electric wire 10 held between is regulated, and the electric wire 10 is pulled out while slipping. When the electric wire 10 reaches a predetermined length and the delivery belts 38 and 39 are stopped, the overrun due to the inertia of the length measuring roller 58 can be effectively prevented, and the length measuring accuracy can be improved.
[0094]
Furthermore, since the wire feeding portion of the processed wire feeding / discharging mechanism 11 and the length measuring mechanism 12 have separate structures, the structure can be simplified from this point, and the manufacturing cost can be reduced.
[0095]
Further, since the processed wire feeding / discharging mechanism 11 and the length measuring mechanism 12 have a separate structure, the processed wire feeding / discharging mechanism 11 is installed on the fixed side, and the front clamp 2 and the length measuring mechanism 12 are moved to the front. 8 can be installed on the movable side moved and operated, and versatility is improved. In addition, since the moving operation portion conveyed by the front moving means 8 can be made compact, it is possible to reduce the load and power consumption in the moving operation.
[0096]
Furthermore, the structure is such that the electric wire 10 is sandwiched between the plurality of driven rollers 34a, 34b, 34c, 35a, 35b, 35c and fed along the electric wire feeding direction P between the feeding belts 38, 39. Also from the point, the stable feeding function of the electric wire 10 can be exhibited.
[0097]
Further, since the wire gripping mechanism 14 is provided with the wire drawing roller groups 66 and 67, it is possible to effectively eliminate the curl of the electric wire 10 fed along the wire feeding direction P immediately before the processing. There is also.
[0098]
Furthermore, since the guide body 102 and the positioning stopper 103 are provided when the replacement wire 10 is gripped by the clamp portions 95, the replacement wire 10 can be always held at a stable position.
[0099]
In the above embodiment, the wire gripping mechanism 14 in a state where the replacement wire 10 has been delivered is moved to the wire feed position A, whereby the wire feed of the wire 10 delivered to the divided holding means 75 is performed. Although the structure in which the state where the downstream end portion in the direction P is located between the two feeding belts 38 and 39 in the pair of wire feeding portions is shown is shown, the wire gripping mechanism 14 is moved to the wire feeding position A. After that, by slightly moving the wire gripping mechanism 14 in the wire feeding direction P by the front moving means 8, the downstream end of the wire feeding direction P of the wire 10 delivered to the divided holding means 75 is It is good also as a structure where the state located between both the delivery belts 38 and 39 in the electric wire feeding part of this is obtained.
[0100]
Moreover, although the structure which was made into the up-down direction as the reciprocating direction of a pair of clamp part 95 is shown, a side direction may be sufficient and it is not limited to the direction of embodiment at all.
[0101]
In addition, a spindle as a follower 71 Although a structure using a circular driven roller body 59 that can rotate freely is shown, it is not limited to a circular shape, and may be a fan shape, and slidably abuts against the electric wire 10 within a rotation range of a constant angle. Any structure may be used as long as it has a portion to be formed.
[0102]
Further, the structure is shown in which the electric wire 10 is fed by the circulating belts 39 and 39 that circulate, but the electric wire 10 is releasably held between a pair of rotationally driven drive rollers, and each drive roller rotates. The structure which feeds the electric wire 10 may be sufficient.
[0103]
Further, although the structure in which the length measuring mechanism 12 is provided in the pair of split holding means 75 is shown, a structure having a length measuring function on the processed wire supply / discharge mechanism 11 side may be used.
[0104]
Moreover, although the terminal crimping apparatus 1 is shown as an example of an electric wire processing machine, other electric wire processing machines may be used.
[0105]
【The invention's effect】
As described above, according to the automatic wire exchange device in the electric wire processing machine of the present invention, the electric wire gripping mechanism holds the electric wire in a portion located on the upstream side in the electric wire feeding direction of the processed electric wire feeding / discharging mechanism. A pair of split holding means that can be connected to and separated from each other and a holding release posture that is operated so as to be separated from each other. Spaced apart in the longitudinal direction Grip releasably Twin A clamp portion, Twin The clamp is Twin For replacement at a position where the replacement electric wire held by the clamp part is supplied and delivered between the pair of split holding means in the holding release posture of the pair of split holding means and is retracted from between the pair of split holding means. Reciprocating operation is possible to and from the replacement wire standby position that holds the wire and waits. In the state where the gripping portion of the wire gripping mechanism is released, and In the wire guide posture of the pair of split holding means, Twin The replacement wire that has been delivered from the clamp can be fed to the processing section by the machined wire feeding and discharging mechanism, effectively preventing catching and buckling during feeding. It is possible to improve the stability when feeding the wires when replacing the wires, and there is no need for a separate feeding roller to feed the wires. The structure can be simplified and the cost can be reduced. There is an advantage that can also be achieved.
[0106]
In addition, the machined wire feeding / discharging mechanism includes a pair of wire feeding units that can be releasably clamped from both sides so that the wire feeding unit can be freely connected and separated, and each wire feeding unit feeds the wires in the wire feeding direction. The wire drive mechanism can be operated in forward and reverse directions to reverse drive and reverse drive that discharges in the direction opposite to the wire feed direction, and the wire gripping mechanism feeds and discharges the retained wire by the processed wire feed / discharge mechanism. Position, and a retreat position for retreating to one side from the wire feeding position by the processed wire feeding / discharging mechanism, Twin It is possible to move to the replacement wire delivery position where the replacement wire is delivered by the clamp part, and the wire gripping mechanism is moved to the wire feeding position in the separated state of the pair of wire feeding parts, Twin The downstream end of the replacement wire that has been delivered from the clamp unit is movable between the pair of wire feeding units, and the replacement wire can be moved by the close operation of the pair of wire feeding units. By adopting a structure in which the downstream end is sandwiched, there is an advantage that the replacement wire can be delivered stably.
[0107]
Furthermore, the pair of split holding means includes an electric wire guide block arranged oppositely on the downstream end side in the electric wire feeding direction, and guides the electric wires along the electric wire feeding direction on the opposing surfaces of the electric wire guide blocks facing each other. Wire guide grooves are formed, opposing surfaces of the respective wire guide blocks facing each other in the wire guide posture of the pair of split holding means are brought into contact with each other, and wire loose insertion holes for loosely guiding and guiding the wires through the respective wire guide grooves are formed. By having the structure formed, there is an advantage that the delivered replacement wire can be more stably fed and guided.
[0108]
In addition, the pair of split holding means further includes a wire guide block arranged to face the upstream end side in the wire feeding direction, and is positioned between the upstream side wire guide block and the downstream side wire guide block. , A length measuring roller that is slidably contacted to one side of the electric wire, and a follower that is slidably contacted to the other side of the electric wire and is rotatably supported by a predetermined angle. If the structure is such that the wire is held between the length measuring roller and the driven body in the wire guide position of the pair of split holding means, overrun due to the inertia of the length measuring roller can be effectively prevented. There is an advantage that the measurement accuracy can be improved.
[0109]
Further, the roller group for wire drawing is arranged along the wire feeding direction on the pair of divided holding means located on the upstream side in the wire feeding direction of the length measuring roller, and each roller group for wire drawing is If the structure is such that the electric wire is held in a sandwiched manner by both wire drawing rollers in the wire guide posture of the pair of divided holding means, the position is shifted along the electric wire feeding direction, and along the electric wire feeding direction. There is also an advantage that the curl etc. of the supplied electric wire can be effectively eliminated immediately before the processing.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an embodiment of the present invention.
FIG. 2 is a side view of the same part.
3 is a rear view of the machined electric wire supply / discharge mechanism in FIG. 2. FIG.
4 is a cross-sectional view taken along the line IV-IV in FIG. 2;
FIG. 5 is a plan view of an electric wire gripping mechanism.
6 is a view taken in the direction of arrows VI-VI in FIG. 5;
7 is a partial cross-sectional left side view of FIG. 6;
8 is a view taken along the line VIII-VIII in FIG.
9 is a side view of a length measuring mechanism portion in FIG. 6. FIG.
FIG. 10 is an explanatory view of the same.
11 is a view taken along the line XI-XI in FIG. 6;
FIG. 12 is a front view of the exchange wire supply mechanism.
FIG. 13 is a side view of the same.
FIG. 14 is an enlarged view of the same part.
FIG. 15 is an explanatory diagram of an electric wire replacement operation.
FIG. 16 is an explanatory diagram of an electric wire replacement operation.
FIG. 17 is an explanatory diagram of an electric wire replacement operation.
FIG. 18 is an explanatory diagram of an electric wire replacement operation.
FIG. 19 is an explanatory diagram of an electric wire replacement operation.
FIG. 20 is an explanatory diagram of an electric wire replacement operation.
[Explanation of symbols]
1 Terminal crimping device
2 Front clamp
3 Measuring unit
4 Cutter unit
8 Front moving means
10 Electric wire
11 Machined wire supply / discharge mechanism
12 Measuring mechanism
13 frame
14 Electric wire gripping mechanism
16 Driving roller
17 Drive roller
28 Guide 杆
29 Support stand
30 Support stand
31 Operation cylinder
34a, 34b, 34c Followed roller
35a, 35b, 35c driven roller
38 Delivery belt
39 Delivery belt
58 Measuring roller
59 Followed roller body
64a, 64b Electric wire guide block
64c wire guide groove
65a, 65b Electric wire guide block
65c Wire guide groove
66 Rollers for wire drawing
67 Wire drawing rollers
75 Divided holding means
90 Replacement wire supply mechanism
95 Clamp part

Claims (5)

An electric wire processing machine for processing an electric wire has an electric wire gripping mechanism having a portion for gripping the electric wire releasably on the downstream side in the electric wire feeding direction, and an electric wire gripping mechanism in a state of releasing the grip of the electric wire gripping mechanism. In an automatic wire changer in a wire processing machine comprising a processed wire supply / discharge mechanism that feeds / discharges the held wire to / from the processing unit, and an exchange wire supply mechanism that supplies a replacement wire,
The wire gripping mechanism includes a wire guide posture that is operated close to each other so that the wire can be fed to a portion located on the upstream side in the wire feeding direction of the processed wire feeding / discharging mechanism, and each other that releases the holding of the wire. It is provided with a pair of divided holding means that can be moved to and away from the holding release posture that has been operated separately,
The exchange wire feed mechanism includes a clamp portion of the pair of gripping freely released each spaced a replacement wire in its longitudinal direction, the clamping portion of the pair, a replacement wire is gripped by the clamp portion of the pair The pair of split holding means holds and waits for the replacement wire at a position where the pair of split holding means supplies and transfers the pair of split holding means for delivery and a position retracted from between the pair of split holding means. The reciprocating operation can be freely performed to the exchange wire standby position,
The replacement wire in the state where the gripping portion of the wire gripping mechanism is released and in the wire guide posture of the pair of split holding means is transferred from the pair of clamp portions to the processed wire supply. An automatic electric wire exchange device in an electric wire processing machine, characterized in that it can be fed to a processing section by a discharge mechanism. The processed wire feeding / discharging mechanism includes a pair of wire feeding portions that can be releasably clamped from both sides, and each wire feeding portion feeds the wires in the wire feeding direction. The forward and reverse drive operation can be freely performed between the roll drive and the reverse drive that discharges in the direction opposite to the wire feeding direction.
The electric wire gripping mechanism includes an electric wire feeding position where the held electric wire is fed / discharged by the processed electric wire feeding / discharging mechanism, and a retreat for retracting one side from the electric wire feeding position by the processed electric wire feeding / discharging mechanism. The position can be freely moved to a replacement wire delivery position where the replacement wire is delivered by the pair of clamp portions,
When the wire gripping mechanism is moved to the wire feeding position in the separated state of the pair of wire feeding portions, the wire feeding direction of the replacement wire in a state of being delivered from the pair of clamp portions 2. A downstream end is movable between a pair of wire feeders, and the downstream end of the replacement wire is clamped by an approach operation of the pair of wire feeders. An automatic electric wire exchange device for the electric wire processing machine described.   The pair of split holding means includes an electric wire guide block arranged oppositely on the downstream end side in the electric wire feeding direction, and guides the electric wires along the electric wire feeding direction on the opposing surfaces of the electric wire guide blocks facing each other. The wire guide grooves are formed, and the opposing surfaces of the wire guide blocks facing each other in the wire guide posture of the pair of split holding means are in contact with each other, and the wire guides for loosely inserting and guiding the wires through the wire guide grooves. The wire automatic changer in the wire processing machine according to claim 1 or 2, wherein an insertion hole is formed.   The pair of split holding means further includes an electric wire guide block arranged to face the upstream end side in the electric wire feeding direction, and between the electric wire guide block on the upstream end side and the electric wire guide block on the downstream side. Positioned, the length measuring roller that is slidably abutted on one side of the electric wire and the other side of the electric wire are slidably abutted on the pair of split holding means, and can be rotated by a predetermined angle. 4. The electric wire is held in a sandwiched manner by the length measuring roller and the driven member in the electric wire guide posture of the pair of divided holding means, respectively. Automatic wire changer for wire processing machines.   A group of wire drawing rollers is arranged along the wire feeding direction on the pair of split holding means, located upstream of the length measuring roller in the wire feeding direction, and each wire drawing roller. 5. The group is arranged in a position shifted along the electric wire feeding direction, and the electric wires are held in a sandwiched manner by the two drawing roller groups in the electric wire guide posture of the pair of split holding means. Wire automatic changer in the wire processing machine.

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