Patent Publication Number: US-2022231492-A1

Title: Electric wire processing apparatus

Description:
TECHNICAL FIELD 
     The present invention relates to electric wire processing apparatuses. 
     BACKGROUND ART 
     Electric wire processing apparatuses to perform various processes on electric wires are known in the related art. For example, a known electric wire processing apparatus performs a process, such as cutting, insulator stripping, seal fitting, or terminal crimping, on electric wires each including a core and an insulator surrounding the core. Another known electric wire processing apparatus is configured to detect whether electric wires have been processed properly and collect the electric wires such that the electric wires are sorted into conforming and nonconforming items. 
     JP 2011-210460 A, for example, discloses such an electric wire processing apparatus. The electric wire processing apparatus disclosed in JP 2011-210460 A includes: a clamp that turns while gripping one end of an electric wire; a product tray to collect a conforming item; and a nonconforming item tray to collect a nonconforming item. The electric wire processing apparatus collects conforming and nonconforming items into different trays so as to prevent mixing of the conforming and nonconforming items. 
     CITATION LIST 
     Patent Literature 
     [Patent Literature 1] JP 2011-210460 A 
     SUMMARY OF INVENTION 
     Technical Problem 
     When an electric wire is long, however, conveying a first end of the electric wire by turning of the clamp makes a second end of the electric wire less movable than the first end of the electric wire; thus, it is not necessarily easy to collect an entirety of the electric wire into the product tray or the nonconforming item tray with accuracy. For example, when a nonconforming item is to be collected into the nonconforming item tray, a first end of the nonconforming item may be collected into the nonconforming item tray, but a second end of the nonconforming item may unfortunately be collected into the product tray by mistake. In this case, the nonconforming item may temporarily run onto a boundary region between the nonconforming item tray and the product tray while being collected into the nonconforming item tray, and then the first end may be pulled toward the second end and transferred from the nonconforming item tray to the product tray. As a result, the nonconforming item may be collected into the product tray by mistake. The above-described apparatus may thus fail to appropriately sort a long electric wire into a conforming or nonconforming item. 
     The present invention has been made in view of the above points, and its object is to provide an electric wire processing apparatus that would be able to collect an electric wire such that the electric wire is appropriately sorted into a conforming or nonconforming item if the electric wire is long. 
     Solution to Problem 
     An electric wire processing apparatus disclosed herein includes: a processor to perform a predetermined process on an electric wire including a first end and a second end; a conforming/nonconforming determiner to determine whether the process has been performed successfully; a clamp to grip a portion of the electric wire adjacent to the first end, the clamp being movable so as to convey the first end of the electric wire; a conforming item collector disposed under a movement path for the first end of the electric wire that is being conveyed by the clamp, the conforming item collector being configured to collect a first end side portion of the electric wire determined to be a conforming item by the conforming/nonconforming determiner; a nonconforming item collector disposed under the movement path for the first end of the electric wire that is being conveyed by the clamp, the nonconforming item collector being configured to collect a first end side portion of the electric wire determined to be a nonconforming item by the conforming/nonconforming determiner; a shared collector disposed toward the second end of the electric wire relative to the conforming item collector and the nonconforming item collector, the shared collector being configured to collect a remaining portion of the electric wire determined to be a conforming item by the conforming/nonconforming determiner and a remaining portion of the electric wire determined to be a nonconforming item by the conforming/nonconforming determiner; and a clamp controller to cause, upon determination by the conforming/nonconforming determiner that the electric wire is a conforming item, the clamp to release its grip on the first end of the electric wire when the first end is located over the conforming item collector, and to cause, upon determination by the conforming/nonconforming determiner that the electric wire is a nonconforming item, the clamp to release its grip on the first end of the electric wire when the first end is located over the nonconforming item collector. As used herein, the term “portion of the electric wire adjacent to the first end” refers to a portion of the electric wire located toward the first end relative to the longitudinal center of the electric wire. 
     The electric wire processing apparatus described above causes the portion of the electric wire adjacent to the first end to be gripped by the clamp and conveyed in accordance with movement of the clamp. The first end side portion of the electric wire determined to be conforming by the conforming/nonconforming determiner (hereinafter simply referred to as a “conforming item”) is collected into the conforming item collector. The first end side portion of the electric wire determined to be nonconforming by the conforming/nonconforming determiner (hereinafter simply referred to as a “nonconforming item”) is collected into the nonconforming item collector. The conforming and nonconforming items are collected such that the first end side portion of the conforming item and the first end side portion of the nonconforming item are accurately sorted from each other. The remaining portion of the conforming item and the remaining portion of the nonconforming item are both collected into the shared collector. The electric wire processing apparatus thus eliminates the possibility of collecting the portion of the electric wire adjacent to the second end into a wrong place. Accordingly, the electric wire processing apparatus reduces the possibility that the portion of the conforming item adjacent to the first end will be pulled toward the second end and transferred from the conforming item collector to the nonconforming item collector. The electric wire processing apparatus also reduces the possibility that the portion of the nonconforming item adjacent to the first end will be pulled toward the second end and transferred from the nonconforming item collector to the conforming item collector. When the electric wire is long, the electric wire processing apparatus does not necessarily have to sort an entirety of the electric wire. The electric wire processing apparatus is able to make a clear distinction between the conforming and nonconforming items as a whole by sorting a portion of the electric wire. The electric wire processing apparatus accurately sorts the first end side portion of the conforming item from the first end side portion of the nonconforming item and is thus able to make a clear distinction between the conforming and nonconforming items as a whole. Consequently, the electric wire processing apparatus is able to appropriately sort the conforming item from the nonconforming item. 
     In a preferred embodiment, the processor is configured to perform the predetermined process on the first end of the electric wire gripped by the clamp. 
     The clamp may receive the processed electric wire from another clamp that grips the electric wire during processing of the electric wire by the processor. In the above embodiment, the clamp grips the electric wire during processing of the electric wire by the processor. The above embodiment thus eliminates the need to pass the electric wire between the clamps or reduces the number of times the electric wire is to be passed between the clamps, resulting in increased electric wire processing efficiency. 
     In a preferred embodiment, the electric wire processing apparatus includes a partition wall disposed between the conforming item collector and the nonconforming item collector and extending in an up-down direction. 
     In the above embodiment, the first end side portion of the conforming item is accurately sorted from the first end side portion of the nonconforming item with the partition wall. 
     In a preferred embodiment, an upper edge of the partition wall includes an inclined portion that inclines downward as it extends toward the shared collector. 
     The electric wire that is long may sway when the electric wire falls upon being released from the clamp. In such a case, the portion of the electric wire adjacent to the first end may bend and fall on the upper edge of the partition wall. In the above embodiment, however, the upper edge of the partition wall includes the inclined portion. Thus, when the portion of the electric wire adjacent to the first end has fallen on the inclined portion, the portion then slides down along the inclination of the inclined portion. Accordingly, the electric wire processing apparatus is able to successfully collect the first end side portion of the electric wire into the conforming item collector or the nonconforming item collector. 
     In a preferred embodiment, the conforming item collector includes: an upper collector to collect the first end side portion of the electric wire and allow the collected portion of the electric wire to fall; and a lower collector disposed under the upper collector, the lower collector being configured to collect the portion of the electric wire that has fallen from the upper collector. 
     In the above embodiment, the first end side portion of the conforming item that has been collected into the upper collector is transferrable to the lower collector. Accordingly, during removal of the conforming item from the lower collector and the shared collector, the electric wire processing apparatus is able to collect the first end side portion of another conforming item into the upper collector. Consequently, the electric wire processing apparatus enables collection of one conforming item and removal of another conforming item to be carried out simultaneously, resulting in an increase in the efficiency of electric wire sorting operation. 
     The electric wire is not limited to any particular type of electric wire. The process to be performed on the electric wire is not limited to any particular process. The electric wire may include: a core made of a conductor; and an insulator surrounding the core. The processor may include at least one of: a device to cut the electric wire so as to provide the first end; a device to strip the insulator from the first end of the electric wire; a device to fit a seal to the first end of the electric wire; and a device to crimp a terminal to the first end of the electric wire. 
     Although the direction of movement of the clamp is not limited to any particular direction, the above-described effects will be particularly pronounced when the clamp is configured to turn around a vertical line. 
     Effects of Invention 
     The present invention provides an electric wire processing apparatus that would be able to collect an electric wire such that the electric wire is appropriately sorted into a conforming or nonconforming item if the electric wire is long. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a plan view schematically illustrating the arrangement of an electric wire processing apparatus according to one embodiment. 
         FIG. 2  is a perspective view schematically illustrating an electric wire. 
         FIG. 3  is a perspective view of a collecting device. 
         FIG. 4  is a perspective view of the rear portion of the collecting device. 
         FIG. 5  is a plan view of an upper tray, a nonconforming item tray, and a shared tray of the collecting device. 
         FIG. 6  is a front view of the rear portion of the collecting device. 
         FIG. 7  is a partial rear view of the rear portion of the collecting device. 
         FIG. 8  is a perspective view of the rear portion of the collecting device, illustrating a first end side portion of an electric wire that has fallen on the upper edge of a partition wall. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     An embodiment of the present invention will now be described.  FIG. 1  is a plan view schematically illustrating the arrangement of an electric wire processing apparatus  1  according to the present embodiment. In the following description, the right and left sides in  FIG. 1  are defined as the front and rear sides, respectively, and the upper and lower sides in  FIG. 1  are defined as the right and left sides, respectively. These directions, however, are defined merely for the sake of convenience of description and do not limit, for example, where the electric wire processing apparatus  1  may be installed. 
     As illustrated in  FIG. 2 , an electric wire  5  is a “coated electric wire”. The electric wire  5  includes: a core  5   a  made of a conductor, such as metal; and an insulator  5   b  made of a resin or other material surrounding the core  5   a.    
     As illustrated in  FIG. 1 , the electric wire processing apparatus  1  includes: straightening rollers  6  to smooth the curves of the electric wire  5 ; a feeder  2  to feed the electric wire  5 ; clamps  3 F and  3 R to grip the electric wire  5 ; a conveyance belt  18  to convey the electric wire  5  forward; a cutter device  10 ; seal fitters  15 F and  15 R to fit waterproof seals (not illustrated) to the electric wire  5 ; terminal crimpers  4 F and  4 R to crimp terminals  7  to the electric wire  5 ; a collecting device  8  to collect the electric wire  5  that has been processed; and a controller  9 . 
     The feeder  2  is not limited to any particular arrangement. In this embodiment, the feeder  2  includes: a pair of right front and right rear pulleys  2 A; a right conveyance belt  2 B wound around the right front and right rear pulleys  2 A; a pair of left front and left rear pulleys  2 A; and a left conveyance belt  2 B wound around the left front and left rear pulleys  2 A. Although not illustrated, at least one of the pulleys  2 A is connected with a motor. Driving the motor rotates the pulleys  2 A, causing the conveyance belts  2 B to circulate. The electric wire  5  sandwiched between the right and left conveyance belts  2 B is thus fed forward. 
     The cutter device  10  includes: a cutting edge  11  to cut the electric wire  5 ; and stripping edges  12 R and  12 F to strip the insulator  5   b  from the electric wire  5 . The stripping edge  12 F, the cutting edge  11 , and the stripping edge  12 R are disposed side by side in a transverse direction. 
     The electric wire processing apparatus  1  is able to perform the processes of: cutting the electric wire  5 ; stripping the insulator  5   b  from the electric wire  5 ; fitting waterproof seals to the electric wire  5 ; and crimping the terminals  7  to the ends of the electric wire  5 . The cutting edge  11  is an example of a processor to cut the electric wire  5 . The stripping edges  12 R and  12 F are each an example of a processor to strip the insulator  5   b  from the electric wire  5 . The seal fitters  15 F and  15 R are each an example of a processor to fit a waterproof seal to the electric wire  5 . The terminal crimpers  4 F and  4 R are each an example of a processor to crimp the terminal  7  to the end of the electric wire  5 . The electric wire processing apparatus  1  does not necessarily have to perform all of the processes just mentioned. The electric wire processing apparatus includes a device to perform at least one of the processes. 
     The conveyance belt  18  is disposed forward of the cutter device  10 . The conveyance belt  18  is configured to feed the electric wire  5  forward in conjunction with the feeder  2 . Specifically, the conveyance belt  18  is configured to run forward when the feeder  2  feeds the electric wire  5  forward. A portion of the electric wire  5  is placed on the conveyance belt  18  and conveyed forward with the running of the conveyance belt  18 . 
     The clamps  3 F and  3 R are disposed forward of the feeder  2 . The clamps  3 F and  3 R grip the electric wire  5  fed from the feeder  2 . The clamps  3 F and  3 R are able to grip the electric wire  5  and release its grip on the electric wire  5 . 
     The clamp  3 F is disposed rearward of the cutter device  10 . The clamp  3 R is disposed forward of the cutter device  10 . The clamp  3 F is configured to be able to turn around a turning center CF. The clamp  3 R is configured to be able to turn around a turning center CR. Each of the turning centers CF and CR is a vertical line that extends vertically. Although not illustrated, the electric wire processing apparatus  1  includes: an actuator to open and close the clamp  3 F (i.e., an actuator to cause the clamp  3 F to grip the electric wire  5  and release its grip on the electric wire  5 ); an actuator to cause the clamp  3 F to turn; an actuator to open and close the clamp  3 R; and an actuator to cause the clamp  3 R to turn. Such actuators are well known and will thus not be described any further. The clamp  3 F turns while gripping the front end of the rear side electric wire  5  that has been cut, thus conveying the front end of the electric wire  5  to the stripping edge  12 F, the seal fitter  15 F, and the terminal crimper  4 F. The clamp  3 R turns while gripping the rear end of the front side electric wire  5  that has been cut, thus conveying the rear end of the electric wire  5  to the stripping edge  12 R, the seal fitter  15 R, and the terminal crimper  4 R. 
     The electric wire processing apparatus  1  includes a conforming/nonconforming determiner  14  to determine whether the electric wire  5  has been processed successfully. In the present embodiment, the conforming/nonconforming determiner  14  is configured to determine whether the electric wire  5  has been cut successfully, whether the electric wire  5  has been stripped of the insulator  5   b  successfully, whether a waterproof seal has been fitted to the electric wire  5  successfully, and whether a terminal has been crimped to the electric wire  5  successfully. The conforming/nonconforming determiner  14  does not necessarily have to make determinations on whether all of the cutting, stripping, waterproof seal fitting, and terminal crimping processes have been performed successfully but may be configured to make a determination on at least one of the processes. Such a determiner is well known and will thus not be described in detail. 
     The collecting device  8  will now be described. The collecting device  8  collects the electric wire  5  that has been processed.  FIG. 3  is a perspective view of the collecting device  8 .  FIG. 4  is an enlarged perspective view of the rear portion of the collecting device  8 . 
     As illustrated in  FIG. 4 , the collecting device  8  includes: an upper tray  21 ; a lower tray  22  disposed under the upper tray  21 ; and a nonconforming item tray  23  disposed laterally of the upper tray  21  (i.e., leftward of the upper tray  21  in the present embodiment). As illustrated in  FIG. 3 , the collecting device  8  further includes a shared tray  24 . The upper tray  21 , the lower tray  22 , the nonconforming item tray  23 , and the shared tray  24  are disposed laterally of the conveyance belt  18  (i.e., leftward of the conveyance belt  18  in the present embodiment).  FIG. 5  is a plan view of the upper tray  21 , the lower tray  22 , the nonconforming item tray  23 , and the shared tray  24 . The shared tray  24  is disposed forward of the upper tray  21  and the nonconforming item tray  23 . The shared tray  24  is disposed forward of the lower tray  22  (see  FIG. 3 ). A portion of the shared tray  24  is in straight alignment with the upper tray  21  and the lower tray  22  in a front-rear direction. Another portion of the shared tray  24  is in straight alignment with the nonconforming item tray  23  in the front-rear direction. 
     As illustrated in  FIG. 1 , turning of the clamp  3 R around the turning center CR causes a rear end  51  of the electric wire  5  gripped by the clamp  3 R to move between a position in front of the cutting edge  11  and a position in front of the terminal crimper  4 R. The rear end of the front side electric wire  5  that has been cut will hereinafter be referred to as a “first end”. The front end of the front side electric wire  5  that has been cut will hereinafter be referred to as a “second end”. A virtual line  51   t  in  FIG. 5  indicates a movement path for the first end  51  of the electric wire  5 . As illustrated in  FIG. 5 , the upper tray  21  and the nonconforming item tray  23  are disposed under the movement path  51   t  for the first end  51 . 
       FIG. 6  is a front view of the rear portion of the collecting device  8  as viewed from the front to the rear.  FIG. 7  is a partial rear view of the rear portion of the collecting device  8  as viewed from the rear to the front. As illustrated in  FIG. 6 , the upper tray  21  is configured to be able to rotate around a rotation shaft  25  extending in the front-rear direction. Specifically, as illustrated in  FIG. 7 , the collecting device  8  includes a supporting arm  26  supporting the upper tray  21 . The supporting arm  26  includes: a support  26   a  supporting the upper tray  21 ; and a connector  26   b  rotatably connected to a rod  27   a  of an air cylinder  27  through a connecting shaft  28 . The rotation shaft  25  is disposed between the support  26   a  and the connector  26   b . Extending the rod  27   a  of the air cylinder  27  rotates the supporting arm  26  around the rotation shaft  25  in the clockwise direction in  FIG. 7  (i.e., in the counterclockwise direction in  FIG. 6 ). This rotates the upper tray  21  downward (see the virtual line in  FIG. 6 ). In contrast, contracting the rod  27   a  of the air cylinder  27  rotates the supporting arm  26  around the rotation shaft  25  in the counterclockwise direction in  FIG. 7  (i.e., in the clockwise direction in  FIG. 6 ). This rotates the upper tray  21  upward (see the solid line in  FIG. 6 ). The mechanism just described, however, is presented by way of example only. The upper tray  21  may be rotated by any other mechanism. The actuator for rotating the upper tray  21  is not limited to the air cylinder  27 . 
     The lower tray  22  is disposed under the upper tray  21 . Thus, upon rotation of the upper tray  21  as illustrated in  FIG. 6 , a portion of the electric wire  5  adjacent to the first end  51 , which has been collected into the upper tray  21 , falls and is collected into the lower tray  22 . 
     Upon release of the electric wire  5  from the clamp  3 R, with the first end  51  of the electric wire  5  located over the upper tray  21 , the portion of the electric wire  5  adjacent to the first end  51  falls and is collected into the upper tray  21 . During turning of the clamp  3 R from the position in front of the cutter device  10  to the position in front of the terminal crimper  4 R, the remaining portion of the electric wire  5  falls from a position on the conveyance belt  18  to the left (or specifically, a portion of the electric wire  5  close to the clamp  3 R falls first, and then a portion of the electric wire  5  close to a second end  52  falls) and is collected into the shared tray  24 . The shared tray  24  may be located higher or lower than the lower tray  22 . In the present embodiment, the shared tray  24  is located at the same height as the lower tray  22 . Thus, transferring the portion of the electric wire  5  adjacent to the first end  51  from the upper tray  21  to the lower tray  22  brings the electric wire  5  into a relatively straight state on the lower tray  22  and the shared tray  24 . 
     As previously mentioned, the nonconforming item tray  23  is disposed under the movement path  51   t  for the first end  51  of the electric wire  5  and laterally of the upper tray  21 . In the present embodiment, the nonconforming item tray  23  is disposed leftward of the upper tray  21 . Upon release of the electric wire  5  from the clamp  3 R, with the first end  51  of the electric wire  5  located over the nonconforming item tray  23 , the portion of the electric wire  5  adjacent to the first end  51  falls and is collected into the nonconforming item tray  23 . During turning of the clamp  3 R from the position in front of the cutter device  10  to the position in front of the terminal crimper  4 R, the remaining portion of the electric wire  5  falls from a position on the conveyance belt  18  to the left and is collected into the shared tray  24 . The nonconforming item tray  23  may be located at any height. In the present embodiment, the nonconforming item tray  23  is disposed higher than the shared tray  24 . 
     As illustrated in  FIG. 5 , the longitudinal dimensions of the upper tray  21  and the nonconforming item tray  23  (i.e., the dimensions of the upper tray  21  and the nonconforming item tray  23  in the front-rear direction in this embodiment) are each shorter than the longitudinal dimension of the shared tray  24 . The breadth of the shared tray  24  (i.e., the dimension of the shared tray  24  in the transverse direction in this embodiment) is longer than the breadth of each of the upper tray  21  and the nonconforming item tray  23  (i.e., the dimension of each of the upper tray  21  and the nonconforming item tray  23  in the transverse direction in this embodiment). 
     As illustrated in  FIG. 4 , a partition wall  29  extending in an up-down direction and the front-rear direction is provided between the upper tray  21  and the nonconforming item tray  23 . The upper edge of the partition wall  29  includes: an inclined portion  29   a ; a horizontal portion  29   b  located forward of the inclined portion  29   a ; and an inclined portion  29   c  located forward of the horizontal portion  29   b . The inclined portion  29   a  inclines downward as it extends forward. In other words, the inclined portion  29   a  inclines downward as it extends toward the shared tray  24 . The inclined portion  29   c  inclines upward as it extends forward. In other words, the inclined portion  29   c  inclines upward as it extends toward the shared tray  24 . 
     As previously described, the conforming/nonconforming determiner  14  determines whether the electric wire  5  has been processed successfully. Upon determination that the electric wire  5  gripped by the clamp  3 R is a conforming item, the controller  9  controls the clamp  3 R such that the clamp  3 R releases its grip on the electric wire  5 , with the first end  51  of the electric wire  5  located over the upper tray  21 . Upon determination that the electric wire  5  gripped by the clamp  3 R is a nonconforming item, the controller  9  controls the clamp  3 R such that the clamp  3 R releases its grip on the electric wire  5 , with the first end  51  of the electric wire  5  located over the nonconforming item tray  23 . The clamp  3 R may release its grip on the electric wire  5  during return of the first end  51  of the electric wire  5  from the position in front of the terminal crimper  4 R to the position in front of the cutting edge  11 . Upon determination that the process of cutting the electric wire  5 , stripping off the insulator  5   b , or fitting a waterproof seal has been performed unsuccessfully before terminal crimping, the clamp  3 R may release its grip on the electric wire  5  during movement of the first end  51  toward the position in front of the terminal crimper  4 R. The timing for the clamp  3 R to release its grip on the electric wire  5  for collection may be any other timing. 
     The electric wire processing apparatus  1  sequentially and continuously produces the electric wires  5  whose ends have the terminals  7  crimped thereto. The following description discusses how the electric wire processing apparatus  1  operates. First, the feeder  2  and the conveyance belt  18  feed the electric wire  5  forward (i.e., rightward in  FIG. 1 ). The electric wire  5  is gripped by the clamps  3 F and  3 R and cut into electric wires  5  with the cutting edge  11  of the cutter device  10 . 
     The clamp  3 F then turns rightward (i.e., upward in  FIG. 1 ) while gripping the associated electric wire  5  that has been cut, thus guiding the front end of the associated electric wire  5  to the stripping edge  12 F. The clamp  3 R turns leftward (i.e., downward in  FIG. 1 ) while gripping the associated electric wire  5 , thus guiding the rear end of the associated electric wire  5  to the stripping edge  12 R. The stripping edges  12 F and  12 R each strip the insulator  5   b  from the end of the associated electric wire  5 . 
     The clamp  3 F then turns further rightward while gripping the associated electric wire  5 , thus guiding the front end of the associated electric wire  5  to a position in front of the seal fitter  15 F. The clamp  3 R turns further leftward while gripping the associated electric wire  5 , thus guiding the rear end of the associated electric wire  5  to a position in front of the seal fitter  15 R. The seal fitters  15 F and  15 R each fit a waterproof seal to the end of the associated electric wire  5 . 
     The clamp  3 F then turns further rightward while gripping the associated electric wire  5 , thus guiding the front end of the associated electric wire  5  to a position in front of the terminal crimper  4 F as indicated by the corresponding virtual line in  FIG. 1 . The clamp  3 R turns further leftward while gripping the associated electric wire  5 , thus guiding the rear end of the associated electric wire  5  to a position in front of the terminal crimper  4 R as indicated by the corresponding virtual line in  FIG. 1 . The terminal crimpers  4 F and  4 R each crimp the terminal  7  to the end of the associated electric wire  5 . 
     The clamp  3 F subsequently returns to its initial position facing the cutting edge  11  (i.e., the position indicated by the corresponding solid line in  FIG. 1 ) while gripping the associated electric wire  5  having the terminal  7  crimped thereto, and releases its grip on the associated electric wire  5 . 
     The clamp  3 R turns to its initial position, which faces the cutting edge  11 , while gripping the associated electric wire  5 . Upon determination by the conforming/nonconforming determiner  14  that the associated electric wire  5  is a conforming item, the clamp  3 R releases its grip on (or releases) the associated electric wire  5  when the clamp  3 R has reached a position over the upper tray  21 . As a result, a portion of the conforming electric wire  5 G adjacent to the first end  51  is collected into the upper tray  21  (see  FIG. 4 ), and an entirety of the conforming electric wire  5 G is thus collected partly into the upper tray  21  and partly into the shared tray  24  (see  FIG. 5 ). In  FIGS. 4 and 5 , the waterproof seals fitted to the electric wires  5 G and  5 N and the terminals crimped to the electric wires  5 G and  5 N are not illustrated. 
     Upon determination by the conforming/nonconforming determiner  14  that the associated electric wire  5  is a nonconforming item, the clamp  3 R releases its grip on the associated electric wire  5  when the clamp  3 R has reached a position over the nonconforming item tray  23 . As a result, a portion of the nonconforming electric wire  5 N adjacent to the first end  51  is collected into the nonconforming item tray  23  (see  FIG. 4 ), and an entirety of the nonconforming electric wire  5 N is thus collected partly into the nonconforming item tray  23  and partly into the shared tray  24  (see  FIG. 5 ). 
     After having released the associated electric wire  5 , the clamp  3 R returns to the initial position. The electric wire processing apparatus  1  then repeats the operations described above. The electric wire processing apparatus  1  thus sequentially and continuously produces the electric wires  5  whose ends have the terminals  7  crimped thereto. 
     After a predetermined number of the electric wires  5  have been processed, the controller  9  drives the air cylinder  27  so as to rotate the upper tray  21  downward. Thus, the portion of each conforming electric wire  5 G adjacent to the first end  51 , which has been collected into the upper tray  21 , falls and is transferred to the lower tray  22  (see  FIG. 6 ). As a result, each conforming electric wire  5 G is collected into the lower tray  22  and the shared tray  24 . The controller  9  subsequently drives the air cylinder  27  so as to rotate the upper tray  21  upward. The upper tray  21  then collects the portion of each conforming electric wire  5 G adjacent to the first end  51  again. 
     The portion of the conforming electric wire  5 G adjacent to the first end  51  is collected into the lower tray  22 , and the portion of the nonconforming electric wire  5 N adjacent to the first end  51  is collected into the nonconforming item tray  23 . This enables a user to make a clear distinction between the conforming electric wire  5 G and the nonconforming electric wire  5 N. The user is thus able to remove the conforming electric wire  5 G from the lower tray  22  and the shared tray  24  without making any mistake. The user is also able to remove the nonconforming electric wire  5 N from the nonconforming item tray  23  and the shared tray  24  without making any mistake. Accordingly, the user is able to appropriately sort the electric wires  5  into the conforming and nonconforming electric wires  5 G and  5 N. 
     As described above, the electric wire processing apparatus  1  according to the present embodiment collects the portion of the conforming electric wire  5 G (hereinafter simply referred to as a “conforming item  5 G”) adjacent to the first end  51  into the upper tray  21 , and collects the portion of the nonconforming electric wire  5 N (hereinafter simply referred to as a “nonconforming item  5 N”) adjacent to the first end  51  into the nonconforming item tray  23 . The electric wire processing apparatus  1  thus sorts the portion of the conforming item  5 G adjacent to the first end  51  from the portion of the nonconforming item  5 N adjacent to the first end  51 . Because each of the conforming and nonconforming items  5 G and  5 N is the electric wire  5  that is long, the electric wire processing apparatus  1  does not necessarily have to sort an entirety of each item. The electric wire processing apparatus  1  is able to make a clear distinction between the conforming and nonconforming items  5 G and  5 N as a whole by accurately sorting a portion of each item adjacent to the first end  51  (see  FIGS. 4 and 5 ). Consequently, the electric wire processing apparatus  1  is able to appropriately sort the conforming item  5 G from the nonconforming item  5 N. 
     The electric wire processing apparatus  1  collects the remaining portion of each of the conforming and nonconforming items  5 G and  5 N into the shared tray  24 . Portions of the conforming and nonconforming items  5 G and  5 N adjacent to the second ends  52  are all collected into the same tray (i.e., the shared tray  24 ). Thus, unlike the case where an entirety of each conforming electric wire  5 G and an entirety of each nonconforming electric wire  5 N are separately collected into different trays, each second end  52  will not be collected into a wrong tray. The portion of each item adjacent to the second end  52  will not run onto a region between two trays. Accordingly, the electric wire processing apparatus  1  reduces the possibility that the portion of the conforming electric wire  5 G adjacent to the first end  51  will be pulled toward the second end  52  and transferred from the upper tray  21  to the nonconforming item tray  23 . The electric wire processing apparatus  1  also reduces the possibility that the portion of the nonconforming electric wire  5 N adjacent to the first end  51  will be pulled toward the second end  52  and transferred from the nonconforming item tray  23  to the upper tray  21 . Consequently, the electric wire processing apparatus  1  is able to correctly collect the portion of each conforming item  5 G adjacent to the first end  51  into the upper tray  21  and correctly collect the portion of each nonconforming item  5 N adjacent to the first end  51  into the nonconforming item tray  23 . 
     Accordingly, the electric wire processing apparatus  1  is able to collect the conforming and nonconforming items  5 G and  5 N such that the portion of the conforming item  5 G adjacent to the first end  51  is correctly sorted from the portion of the nonconforming item  5 N adjacent to the first end  51 , and is thus able to appropriately sort the conforming item  5 G from the nonconforming item  5 N. 
     In the present embodiment, the partition wall  29  extending in the up-down direction serves as a partition between the upper tray  21  and the nonconforming item tray  23  as illustrated in  FIG. 4 . The electric wire processing apparatus  1  is thus able to accurately sort, with the partition wall  29 , the portion of the conforming item  5 G adjacent to the first end  51  from the portion of the nonconforming item  5 N adjacent to the first end  51 . 
     In the present embodiment, the upper edge of the partition wall  29  includes the inclined portion  29   a  that inclines downward as it extends toward the shared tray  24  (i.e., forward). The electric wire  5  is long and may thus sway when the portion of the electric wire  5  adjacent to the first end  51  falls upon being released from the clamp  3 R. In such a case, a portion  51   a  of the conforming item  5 G adjacent to the first end  51  may bend and fall on the inclined portion  29   a  of the upper edge of the partition wall  29  as illustrated in, for example,  FIG. 8 . If the portion  51   a  of the conforming item  5 G has fallen on the inclined portion  29   a , however, the portion  51   a  would then slide down along the inclination of the inclined portion  29   a  (see the arrow in  FIG. 8 ). As a result, the portion of the conforming item  5 G adjacent to the first end  51  will be collected into the upper tray  21 . The same goes for the nonconforming item  5 N. If a bent portion of the nonconforming item  5 N has fallen on the inclined portion  29   a  of the partition wall  29 , the bent portion would slide down along the inclined portion  29   a  and would thus be collected into the nonconforming item tray  23 . Accordingly, if the portion of the electric wire  5  adjacent to the first end  51  sways when the clamp  3 R releases its grip on the electric wire  5 , the portion of the conforming item  5 G adjacent to the first end  51  would be successfully collected into the upper tray  21 , and the portion of the nonconforming item  5 N adjacent to the first end  51  would be successfully collected into the nonconforming item tray  23 . 
     In the present embodiment, the upper tray  21  is configured to allow the portion of the conforming item  5 G adjacent to the first end  51 , which has been collected, to fall. The lower tray  22  to receive the portion of the conforming item  5 G adjacent to the first end  51 , which has fallen, is disposed under the upper tray  21 . The portion of the conforming item  5 G adjacent to the first end  51 , which has been collected into the upper tray  21 , is thus transferable to the lower tray  22 . While removing the conforming item  5 G from the lower tray  22  and the shared tray  24 , the user is able to collect the portion of another conforming item  5 G adjacent to the first end  51  into the upper tray  21 . Accordingly, the user does not have to deactivate the electric wire processing apparatus  1  in order to remove the conforming item  5 G. Consequently, the electric wire processing apparatus  1  is able to achieve higher processing efficiency. 
     In the present embodiment, the clamp  3 R, which grips the electric wire  5  during processing of the first end  51  of the electric wire  5 , causes the portion of the electric wire  5  adjacent to the first end  51  to be collected into the upper tray  21  or the nonconforming item tray  23 . The present embodiment thus eliminates the need to pass the portion of the electric wire  5  adjacent to the first end  51  between multiple clamps when the first end  51  of the electric wire  5  is processed and is then collected into the upper tray  21  or the nonconforming item tray  23 . In other words, the portion of the electric wire  5  adjacent to the first end  51  does not have to be passed from one clamp to another clamp. This results in an increase in electric wire processing efficiency and a reduction in takt time. 
     Before starting an actual operation, the user may run a test operation to check whether the electric wire processing apparatus  1  operates successfully. An electric wire provided as a result of such a test operation (which will hereinafter be referred to as an “adjustment wire”) is preferably collected into either the upper tray  21  or the nonconforming item tray  23 . The user is able to remove the collected adjustment wire from the upper tray  21  or the nonconforming item tray  23  so as to make, for example, a visual check of the adjustment wire, thus determining whether the adjustment wire is conforming or nonconforming. Because the adjustment wire will usually be discarded, the adjustment wire may be collected into the nonconforming item tray  23  when a distinction is to be made between the adjustment wire and the conforming item  5 G provided as a result of the actual operation. Accordingly, the electric wire processing apparatus  1  would be able to prevent mixing of the adjustment wire and the conforming item  5 G if the user has started the actual operation without removing the adjustment wire after the test operation. 
     One embodiment has been described thus far. The above embodiment, however, is presented by way of example only. Various other embodiments are possible. Examples of other embodiments will be briefly described below. 
     In the above embodiment, the clamp  3 R grips the electric wire  5  during processing of the first end  51  of the electric wire  5  and then causes the portion of the electric wire  5  adjacent to the first end  51  to be collected into the upper tray  21  or the nonconforming item tray  23 . Alternatively, one clamp may grip the electric wire  5 , and another clamp may cause the portion of the electric wire  5  adjacent to the first end  51  to be collected. In one example, following the processing of the first end  51  of the electric wire  5 , a first clamp may pass the portion of the electric wire  5  adjacent to the first end  51  to a second clamp, and then the second clamp may cause the portion to be collected into the upper tray  21  or the nonconforming item tray  23 . In this case, the second clamp corresponds to the clamp according to the present invention. Such an embodiment allows the first clamp to return to its initial position located in front of the cutter device  10  (i.e., the position indicated by the associated solid line in  FIG. 1 ) while the second clamp causes the electric wire  5  to be collected into the upper tray  21  or the nonconforming item tray  23 . The first clamp enables the start of processing of another electric wire  5  while the second clamp causes the processed electric wire  5  to be collected into the upper tray  21  or the nonconforming item tray  23 . This allows the collection and processing of the electric wires  5  to proceed concurrently. 
     The electric wire processing apparatus  1  may include a cutter. Upon determination by the conforming/nonconforming determiner  14  that the electric wire  5  is nonconforming, the cutter cuts off the first end  51  from the nonconforming item  5 N before the nonconforming item  5 N is collected into the nonconforming item tray  23 . In this case, the nonconforming item  5 N from which the first end  51  has been cut off will be collected into the nonconforming item tray  23 . The user is thus able to differentiate at a glance between the nonconforming item  5 N from which the first end  51  has been cut off and the conforming item  5 G including the first end  51 . Accordingly, the user is able to easily distinguish the conforming item  5 G from the nonconforming item  5 N. 
     In the above embodiment, the upper tray  21  is configured to rotate upward and downward. The upper tray  21 , from which the electric wire  5  is allowed to fall, does not necessarily have to be of a rotary type. The upper tray  21  may be of a sliding type. The upper tray  21  is not limited to any particular mechanism. 
     In the above embodiment, the upper tray  21  is configured to allow the electric wire  5  to fall therefrom, and the lower tray  22  is disposed under the upper tray  21 . The upper tray  21  and the lower tray  22 , however, are not limited to any particular configuration or location. The upper tray  21  may be configured such that the electric wire  5  is unable to fall therefrom, and the lower tray  22  may be optional. Alternatively, the upper tray  21  may be optional, and the electric wire processing apparatus  1  may be configured such that the portion of the conforming item  5 G adjacent to the first end  51  is directly collected into the lower tray  22 . 
     In the above embodiment, the clamp  3 R to grip the portion of the electric wire  5  adjacent to the first end  51  is configured to turn around the turning center CR. The direction of movement of the clamp  3 R, however, is not limited to a turning direction. In one example, the clamp  3 R may be configured to move in a straight line. 
     In the above embodiment, the longitudinal dimensions of the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  are each shorter than the longitudinal dimension of the shared tray  24 . Alternatively, the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  may each have any longitudinal dimension. The longitudinal dimension of at least one of the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  may be equal to or longer than the longitudinal dimension of the shared tray  24 . 
     In the above embodiment, the breadths of the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  are each shorter than the breadth of the shared tray  24 . Alternatively, the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  may each have any breadth. The breadth of at least one of the upper tray  21 , the lower tray  22 , and the nonconforming item tray  23  may be equal to or longer than the breadth of the shared tray  24 . 
     The above embodiment has been described on the assumption that the electric wire  5  gripped by the clamp  3 R (which is the front side electric wire after cutting) is processed unsuccessfully. If the electric wire  5  gripped by the clamp  3 F (which is the rear side electric wire after cutting) is processed unsuccessfully, the subsequent processes, for example, may be performed as follows. First, the clamps  3 F and  3 R return to the initial positions (i.e., the positions indicated by the associated solid lines in  FIG. 1 ), and then the feeder  2  feeds the electric wire  5  forward to such an extent that the clamp  3 R is able to grip the electric wire  5 . The clamps  3 F and  3 R grip the electric wire  5 , and the electric wire  5  is cut with the cutting edge  11 . The electric wire  5  is thus separated into an electric wire  5  gripped by the clamp  3 F and a short electric wire  5  gripped by the clamp  3 R. The clamp  3 R subsequently turns and releases its grip on the short electric wire  5  over the nonconforming item tray  23 . As a result, the short electric wire  5  that has been determined to be a nonconforming item is collected into the nonconforming item tray  23 . 
     In the above embodiment, the upper tray  21  and the lower tray  22  serve as an example of a conforming item collector to collect a portion of the conforming item  5 G adjacent to the first end  51 , the nonconforming item tray  23  serves as an example of a nonconforming item collector to collect a portion of the nonconforming item  5 N adjacent to the first end  51 , and the shared tray  24  serves as an example of a shared collector to collect the remaining portions of the conforming and nonconforming items  5 G and  5 N. The shape of each of the conforming item collector, the nonconforming item collector, and the shared collector, however, does not necessarily have to be a box shape with a bottom wall and lateral walls. The collectors may each have any other shape. 
     The present invention is particularly effective in processing the electric wire  5  that is long. The present invention is also naturally applicable to the electric wire  5  that is short. The electric wire processing apparatus according to the present invention may process both of long and short electric wires. 
     REFERENCE SIGNS LIST 
     
         
         
           
               1  electric wire processing apparatus 
               3 R clamp 
               5  electric wire 
               5   a  core 
               5   b  insulator 
               5 G conforming electric wire 
               5 N nonconforming electric wire 
               9  controller (clamp controller) 
               14  conforming/nonconforming determiner 
               21  upper tray (conforming item collector, upper collector) 
               22  lower tray (conforming item collector, lower collector) 
               23  shared tray (shared collector) 
               24  nonconforming item tray (nonconforming item collector) 
               29  partition wall 
               29   a  inclined portion 
               51  first end 
               51   t  movement path for first end 
               52  second end