JP5132907B2 - Control method of wire feed speed to long wire receiving device - Google Patents

Description

  The present invention relates to a method for controlling a wire feeding speed to a long wire receiving device disposed in a portion for feeding a long wire processed by a wire processing machine such as a both-end terminal crimping device.

  For example, as shown in FIG. 11, in a wire harness manufacturing apparatus such as a both-end terminal crimping apparatus, the processed long electric wire 1 is arranged on the downstream side by a pair of feeding rollers 3 in the wire feeding apparatus 2. In addition, there is a structure in which the long wire receiving device 4 is sequentially fed.

  The long wire receiving device 4 includes a conveyor 5 that circulates in a predetermined direction, and includes a bowl-shaped tray 6 along the conveyor 5 at one side of the conveyor 5. 3 is guided on a conveyor belt 5a that is circulated at a predetermined speed of the conveyor 5 and the elongated cable 1 placed on the conveyor belt 5a is circulated. It is guided to the downstream side in the transport direction with the rotation.

  Then, after feeding a predetermined length by the feed roller 3, the upstream end of the long electric wire 1 in the transport direction is chucked releasably by the wire chuck mechanism 7 and received by the wire chuck mechanism 7 from the feed roller 3. Then, the moving operation is performed in the direction of the tray portion 6 which is one side of the electric wire chuck mechanism 7.

  Due to the movement of the electric wire chuck mechanism 7 to one side, the long electric wire 1 on the conveyor belt 5a is gradually moved to the tray 6 side as the conveyor belt 5a circulates, and finally the tray section. 6 (see, for example, Patent Document 1).

  However, when the length of the long electric wire 1 to be fed becomes longer, the length of the long wire receiving device 4 becomes longer and wider in such a structure in which it is conveyed by such a single conveying conveyor 5. There is a drawback that installation space is required.

  Therefore, for example, as shown in FIG. 12 and FIG. 13, the long wire receiving device 4 includes transport conveyors 10 and 11 arranged in a plurality of stages in the vertical direction, and one side portion of each transport conveyor 10 and 11. The upper conveyor belt 10a and the lower conveyor belt 11a of the upper conveyor conveyor 10 are circulated and rotated in opposite directions. There is a long wire receiving device 4.

  Then, the long electric wire 1 fed by the feeding roller 3 of the wire feeding device 2 is guided from the rear end of the upper transport belt 10a in the transport direction to the lower transport belt 11a through the turnback path 14, and then the lower transport belt 10a. The direction is changed so as to be folded by the conveyor belt 11a, and the structure is conveyed in the direction of the electric wire feeder 2.

  Therefore, the long electric wire 1 has a structure in which the long electric wire 1 is stocked in a folded shape across the upper and lower receiving trays 12 and 13, and the entire length of the long electric wire 1 in the conveying direction of the long wire receiving device 4 can be shortened. It has been proposed as a compact structure (see, for example, Patent Document 2).

JP-A-6-96630 Japanese Utility Model Publication No. 63-35764

  However, the conventional wire feeder 2 was configured to feed at a constant speed from the start of feeding the long wire 1 to the stop of feeding. In general, the electric wire feeding speed is relatively high.

  Therefore, when the leading end portion of the long electric wire 1 to be fed hits the folded plate 14a arranged opposite to each other that constitutes the folding path, or after that, when reaching the lower conveyance belt 11a, As shown in FIG. 12 and FIG. 13, the long electric wire 1 jammed due to the impact, and there was a possibility that it could not be smoothly transferred to the tray parts 12, 13 arranged on the side.

  In addition, the impact may damage the leading end of the long electric wire 1 in the feeding direction.

  Therefore, in view of these problems, the present invention provides a method for controlling the wire feed speed to the long wire receiving device that can effectively prevent jamming and damage to the tip of the wire and can be smoothly transferred to the tray portion. For the purpose.

  The technical means for solving the above-mentioned problem is that the long wire receiving device for receiving the long electric wires sequentially fed from the electric wire feeding unit includes a conveying conveyor arranged in a plurality of stages in the vertical direction, and each conveying Each side of the conveyor is provided with a tray, and the upper conveyor belt and the lower conveyor belt of the upper conveyor are circulated in opposite directions and fed from the wire feeder. Wire feed speed control to a long wire receiving device that transfers a long wire to a lower plate from the end of the conveyance direction of the upper belt through the return path to the lower belt and feeds the long wire to the tray after feeding a predetermined length. In the method, the wire feeding speed by the wire feeding unit is reduced when the leading end of the long wire fed on the upper transport belt reaches the vicinity of the end of the upper transport belt in the transport direction. Being long Feed direction front end portion of the wire is in the point of control to be fed to the folding path at a low speed.

  Also, after the leading end of the long electric wire in the feeding direction arrives on the lower conveyance belt, the electric wire feeding speed by the electric wire feeding unit is increased, and the method returns to the initial electric wire feeding speed for feeding. It is good.

  As described above, according to the electric wire feeding speed control method for the long wire receiving device of the present invention, the leading end portion in the feeding direction of the long electric wire fed on the upper conveyance belt is formed on the upper conveyance belt. Because the wire feeding speed by the wire feeding unit is reduced around the end of the conveyance direction, and the tip of the long wire feeding direction is controlled so that the return path is fed at a low speed. When feeding a long wire, it is possible to prevent the leading end of the long wire to be fed from colliding with the opposing wall and the lower conveyance belt constituting the return path. Damage to the tip of the electric wire can be effectively prevented, and the long electric wire can be transferred across the respective conveyor belts in a good posture. Therefore, there is an advantage that it can be smoothly transferred to the tray.

  In addition, if the tip of the long wire in the feeding direction arrives on the lower conveyor belt, the wire feeding speed by the wire feeding unit is increased, and the method returns to the initial wire feeding speed for feeding. There is an advantage that the operating rate can be secured well.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, a long electric wire 21 processed by, for example, a both-end terminal crimping device (not shown) as an electric wire processing machine. An electric wire feeding device 22 for sequentially feeding to the downstream side is arranged, and a long wire for receiving the long electric wires 21 sequentially fed from the electric wire feeding device 22 on the downstream side of the electric wire feeding device 22. A receiving device 23 is arranged. In addition, such a wire feeding device 22 may have a structure that is integrally provided in a portion that discharges the long electric wire 21 processed by the wire processing machine, or may be a structure that is provided in another device. .

  The wire feeding device 22 includes a pair of feeding rollers 24 as a wire feeding unit, and one feeding roller 24 is linked to a servo motor so as to be driven and controlled at a desired rotational speed, and the other. The feed roller 24 is supported so as to roll freely. Then, by the rotational drive of the one feeding roller 24, the processed long electric wire 21 is sequentially fed to the downstream long wire receiving device 23 in a sandwiched state between the two feeding rollers 24. ing.

  The electric wire feeder 22 includes an electric wire chuck mechanism 25 on the downstream side of the pair of feeding rollers 24, and the electric wire chuck mechanism 25 can freely release the long electric wires 21 fed from the pair of feeding rollers 24. A chuck portion 25a for chucking is provided. Then, the electric wire chuck mechanism 25 is capable of chucking the long electric wire 21 fed from the pair of feeding rollers 24 as shown by the phantom lines in FIG. 2, and is an electric wire along the feeding line of the long electric wire 21. It is configured to be freely movable between a chuck operation position A and an electric wire transfer operation position B retracted to one side as indicated by a solid line.

  The long wire receiving device 23 includes transport conveyors 27 and 28 arranged in parallel on a gantry 26 with a plurality of stages (in the present embodiment, two stages in the upper and lower directions) with an appropriate vertical distance. , 28 are provided with bowl-shaped saucers 29, 30 along the conveyors 27, 28, respectively. In addition, conveyor side walls 31 and 32 having appropriate heights are erected along the conveyors 27 and 28 on the other sides of the conveyors 27 and 28, respectively.

  The upper transport belt 27a of the upper transport conveyor 27 disposed on the upper stage and the lower transport belt 28a of the lower transport conveyor 28 disposed on the lower stage are circulated at a predetermined speed in opposite directions. It is structured.

  In addition, a return path 33 from the rear end in the transport direction of the upper upper transport belt 27a to the front end in the transport direction of the lower lower transport conveyor 28 includes a guide plate 33a disposed on the inner side and a return path disposed on the outer side. It is comprised between the board 33b. At this time, one side of the return path 33 provided with the tray portions 29 and 30 is open.

  As shown in FIG. 3, in the present embodiment, the first wire feeding length from the feeding start position of the long wire 21 by the feeding roller 24 to the vicinity of the end of the upper conveyance belt 27a in the conveying direction is set. The corresponding distance is L1, and the distance corresponding to the second wire feed length in the return path 33 from the vicinity of the end of the upper conveyance belt 27a in the conveyance direction to the front end of the lower conveyance belt 28a in the conveyance direction is L2. When the total length of the wire feeding that is the predetermined length to which the long wire 21 is fed is L, the remaining third wire feeding guided on the lower conveyance belt 28a until the total length L of the wire feeding is reached. The distance corresponding to the feed length is L3.

  FIG. 4 shows a control pattern of the wire feeding speed V of the long electric wire 21 fed by the feeding roller 24. The leading end of the long electric wire 21 fed by the feeding roller 24 is While feeding the distance L1 corresponding to the first wire feeding length until the upper conveyance belt 27a reaches the vicinity of the conveying direction end, the wire feeding speed V is a high speed VH (for example, 6 m / s).

  When the upper conveying belt 27a reaches the vicinity of the end in the conveying direction, the wire feeding speed V by the feeding roller 24 is reduced, and the leading end of the long electric wire 21 in the conveying direction passes through the return path 33 and is conveyed in the lower stage. While feeding a distance L2 corresponding to the subsequent second wire feeding length until reaching the upper surface of the belt 28a, the wire feeding speed V is controlled to a low speed VL (for example, 0.5 m / s). Is done.

  Further, after the leading end of the long electric wire 21 in the conveying direction arrives on the lower conveying belt 28a, the electric wire feeding speed V by the feeding roller 24 is increased, and the electric wire feeding speed V is changed to the initial normal feeding speed. The high speed VH is returned to and the distance L3 corresponding to the remaining third wire feeding length is fed.

  Further, the conveyor belts 27a and 28a of the conveyors 27 and 28 circulate at a constant speed (for example, a speed slightly higher than 6 m / s) that is faster than or equal to the wire feeding speed V by the feeding roller 24. It is running around.

  Further, in the present embodiment, the first electric wire feeding length from the starting point of feeding of the electric wire 21 by the feeding roller 24 of the electric wire feeding device 22 to the vicinity of the end in the conveying direction of the upper conveyance belt 27a in the long wire receiving device 23. And a distance L2 corresponding to the second electric wire feeding length from the vicinity of the terminal end to the upper surface of the lower conveyance belt 28a are stored in advance in the electric wire feeder 22 by appropriately inputting from the input device. It is set as the structure to let it be. The settings of the distances L1 and L2 can be arbitrarily changed by the input from the input device, and the wire feeding speed V by the feeding roller 24 can be changed as desired.

  At the time of feeding the long electric wire 21, the electric wire chuck mechanism 25 is on standby at the electric wire chuck operation position A in a standby posture in which the electric wire 21 is not fed by the feeding roller 24.

  In this state, the feeding of the long electric wire 21 from the feeding roller 24 to the long wire receiving device 23 is started. At this time, in accordance with the control pattern shown in FIG. 4, as shown in FIG.

  Then, when the leading end of the electric wire 21 in the feeding direction reaches the vicinity of the end of the upper conveying belt 27a in the conveying direction as shown in FIG. 5, the speed is automatically decelerated, and thereafter, as shown in FIG. Feeding is performed at a low-speed VL electric wire feeding speed V until the leading end in the feeding direction reaches the upper surface of the lower conveyance belt 28a. Accordingly, the electric wire 21 is gradually guided on the lower lower conveyance belt 28a along the turn-back path 33 in a state where the leading end in the feeding direction hangs down.

  When the tip of the wire 21 in the feeding direction reaches the upper surface of the lower conveyance belt 28a, the speed is increased and returned to the wire feeding speed V of the high speed VH, and the remaining length in the wire feeding total length L is fed. .

  Further, when the feeding of the entire length L of the wire feeding is completed, the wire feeding speed V by the feeding roller 24 is decelerated, and just before the feeding, the feeding of the wire 21 by the chuck portion 25a by the wire chuck mechanism 25 is performed. The rear end of the direction is chucked. When the feeding roller 24 completes feeding the entire length L of the wire 21, the rear end of the wire 21 in the feeding direction is transferred to the wire chuck mechanism 25.

  In this state, as shown in FIG. 1, when the electric wire chuck mechanism 25 is moved from the electric wire chuck operation position A to the electric wire transfer operation position B, the long electric wire 21 is gradually moved toward the tray portions 29 and 30. Is dropped into the tray parts 29, 30 and transferred from the respective conveyor belts 27a, 28a across the upper and lower tray parts 29, 30.

  Thereafter, the electric wire chuck mechanism 25 releases the chucked state of the electric wire 21, and then returns to the initial electric wire chuck operation position A and stands by in the initial state.

  In the same manner, the long electric wires 21 that are sequentially fed from the feeding roller 24 are successively delivered in a state of straddling the receiving tray portions 29 and 30.

  The present embodiment is configured as described above, and when the leading end of the long electric wire 21 fed on the upper transport belt 27a reaches the vicinity of the end in the transport direction of the upper transport belt 27a, Since the wire feeding speed V by the feeding roller 24 is decelerated and the leading end of the long wire 21 in the feeding direction is controlled to be fed through the return path 33 at a low speed VL. During feeding, it is effectively prevented that the leading end portion of the fed long electric wire 21 collides with the folding plate 33b as the opposing wall constituting the folding path 33 and the lower conveyance belt 28a. it can. Therefore, jamming of the electric wire 21 and damage to the tip end portion of the electric wire 21 can be effectively prevented, and the electric wire 21 can be delivered across the conveying belts 27a and 28a in a good posture. There is an advantage that transfer to can be performed smoothly.

  Further, until the leading end of the electric wire 21 in the feeding direction reaches near the end of the upper conveyance belt 27a and after the leading end of the electric wire 21 passes through the turnback path 33 and reaches the upper surface of the lower conveyance belt 28a, Since the wire feeding speed V is set to the high speed VH, there is an advantage that the operating rate can be secured well.

  It should be noted that jamming and damage can be more effectively prevented if the low speed VL feed when the leading end of the long electric wire 21 passes through the turnback path 33 is decelerated to a speed that does not contact the turnback plate 33b.

  Further, when the wire feeding total length L is L1 <L <L1 + L2, from the start of feeding by the feeding roller 24 until the distance L1 corresponding to the first wire feeding length is reached, the high speed VH is used as described above. After that, it is only necessary to switch to the low speed VL and send out the remaining wire feeding length at the low speed VL.

  Further, when the total wire feed length L is L <L1, the full length may be sent onto the upper conveyance belt 27a at the high speed VH which is the normal wire feed speed V, as in the conventional wire feed method.

  FIGS. 8 to 10 show other control pattern examples of the wire feeding speed of the long wire 21 fed by the feeding roller 24. In FIG. 8, the wire feeding speed V by the feeding roller 24 is shown. Is controlled at 0 m / s.

  Further, in FIG. 9, the control is such that the wire feeding speed V when feeding the distance L3 corresponding to the remaining third wire feeding length is different from the initial high speed VH. Furthermore, the degree of acceleration / deceleration is also controlled differently from the feeding situation of the wire feeding length L1. Thus, what is necessary is just to set the desired electric wire feeding speed V and the acceleration / deceleration degree suitably according to the kind etc. of the long electric wire 21. FIG.

  Furthermore, in FIG. 10, the wire feeding speed V when feeding the distance L3 corresponding to the remaining third wire feeding length is the wire feeding speed V when feeding the wire feeding length L2. The feed is controlled at the same low speed VL.

  Further, in the upper and lower two-stage long wire receiving device 23 as in the above-described embodiment, a bar code on which the information on the distances L1 and L2 is placed is attached, and this information is read by a bar code reader. It is good also as a structure controlled by the speed pattern according to each distance L1, L2 of each 2 step | paragraph type | mold long wire receiving apparatus 23, and taking in to 22 and corresponding to the different long wire receiving apparatus 23 The control pattern for the wire feed speed V can be easily set.

  In the above embodiment, the two-stage long wire receiving device 23 is shown, but the speed is reduced near the end of the upper conveying belt 27a in the conveying direction, and the electric wire feeding speed V of the return path 33 is sent out at a low speed VL. The control can be similarly applied to a multi-stage long wire receiving device having three or more stages.

It is a schematic perspective view of an electric wire feeder and a long wire receiving device concerning an embodiment of the present invention. It is a top view of an electric wire feeder and a long wire receiving device. It is a front view of an electric wire feeder and a long wire receiving device. It is a control pattern figure which shows the relationship between time and speed. It is a feed operation explanatory view of a long electric wire. It is a feed operation explanatory view of a long electric wire. It is a feed operation explanatory view of a long electric wire. It is a control pattern figure which shows the relationship between another time and speed. It is a control pattern figure which shows the relationship between another time and speed. It is a control pattern figure which shows the relationship between another time and speed. It is a schematic perspective view of the conventional electric wire feeder and a long wire receiving apparatus. It is a feed operation explanatory view of a long electric wire. It is a feed operation explanatory view of a long electric wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Long electric wire 22 Electric wire feeding apparatus 23 Long wire receiving apparatus 24 Feed roller 25 Electric wire chuck mechanism 27 Upper stage side conveyance conveyor 27a Upper stage conveyance belt 28 Lower stage side conveyance conveyor 28a Lower stage conveyance belt 29 Receptacle part 30 Receptacle part 33 Return path

Claims (2)

The long wire receiving device that receives the long electric wires that are sequentially fed from the electric wire feeding unit includes a conveyor that is arranged in multiple stages in the upper and lower sides, and a tray part on one side of each conveyor, The upper conveyor belt and the lower conveyor belt of the upper conveyor belt are circulated in opposite directions, and the long electric wires fed from the electric wire feeder are fed from the end of the upper conveyor belt in the conveying direction. In the method of controlling the wire feed speed to the long wire receiving device that transfers the long wire to the tray part after feeding to the lower conveyor belt through the turnback path and feeding a predetermined length,
When the leading end portion of the long electric wire fed on the upper transport belt reaches the vicinity of the end of the transport direction of the upper transport belt, the wire feeding speed by the wire feeding portion is reduced, A method for controlling a wire feeding speed to a long wire receiving device, wherein the tip of the feeding direction of the long wire is controlled so that the return path is fed at a low speed. In the electric wire feeding speed control method to the long wire receiving device according to claim 1,
After the leading end of the long electric wire in the feeding direction arrives on the lower conveyance belt, the electric wire feeding speed by the electric wire feeding unit is increased, and the electric wire feeding speed is returned to the initial electric wire feeding speed. A method for controlling the wire feeding speed to the long wire receiving device.

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