JP4494058B2 - Electric wire feeder and electric wire length measuring device provided with the same - Google Patents

Description

  The present invention belongs to the technical field of an electric wire feeding device used when manufacturing a wire harness and an electric wire length measuring device equipped with the same, and takes a wide range of the thickness of the electric wire sent to the processing device as much as possible, from a thin electric wire to a thick electric wire. The present invention relates to an electric wire feeder capable of stably feeding an electric wire and an electric wire length measuring device provided with the electric wire feeder.

  Patent document 1 is a mechanism that selectively feeds a required length and a plurality of required types of electric wires according to the processing request from each electric wire supply to a wire processing machine such as a pressure welding machine or a welding machine, and sends the required length. And a pallet into which the electric wires are fed from the pre-feed portion, and a pre-feed portion into which the electric wires from the electric wire supply are fed. Provided in multiple stages, each pallet can be fed a required number and types of wires according to the above processing requirements from the prefeed section, and each pallet can be used as a scale feed roller of the scale roller section. An electric wire feeding mechanism is disclosed in a plurality of types of electric wire processing facilities which are selectively engaged to feed required electric wires in the pallet to the processing machine. In Patent Document 1, a measuring roller portion selectively rotates each wire by interposing a measuring roller that rotates by the amount of feeding the wire to the processing machine and each wire fed to the measuring roller. It is also disclosed that a pressure roller is provided in pressure contact therewith.

In Patent Document 2, a plurality of rows of length measuring lines are individually arranged for each of the wires in a plurality of rows in parallel, and each wire is fed by a predetermined length in the feed direction which is the longitudinal direction of the wires. And each length measuring roller in each row can be rotated independently, and each length measuring roller in each row can be made independent when each wire is sent out a predetermined length. In the electric wire length measuring device in a multi-electricity harness manufacturing apparatus including a plurality of electric motors for stopping, the plurality of rows of length measuring rollers are the same along a pitch direction perpendicular to the feeding direction. An electric wire length measuring device is disclosed in a multi-electric harness manufacturing apparatus arranged in a line on a straight line. This patent document 2 discloses that the length measuring roller includes a pressure roller and a feed roller.
Japanese Patent Laid-Open No. 10-212068 Japanese Patent Laid-Open No. 10-241822

  In these electric wire feeding mechanisms and electric wire length measuring devices, a predetermined number of rotations of the roller are used to feed the electric wire by a predetermined length, or a measuring means such as an encoder is provided, and the roller is moved until the output of the measuring means reaches a set value. The electric wire is sent by a predetermined length by being rotationally driven. Such an electric wire feeding mechanism and an electric wire length measuring device are required to make the range of the thickness of the electric wire that can be sent as wide as possible and stably send from a thin electric wire to a thick electric wire. However, if a thick electric wire is handled, slippage is likely to occur between the electric wire and the roller due to the weight of the electric wire, and the amount of slippage becomes an amount that cannot be ignored. In that case, it is conceivable to increase the pressing force of the pressure roller or pressure roller to make it less likely to slip. It interferes with processing with the processing equipment.

The present invention has been made paying attention to such points, and the object of the present invention is to use only the lower roller of a pair of upper and lower rollers as in the conventional wire feeding mechanism and wire length measuring device. Rather than adopting a single drive for rotational driving, the upper and lower rollers are rotationally driven to give the lower and upper rollers the force to feed the wires almost evenly, causing slippage even with thick wires. Without limiting the roller pressing force to a small length and preventing the wire from being deformed, etc. An object of the present invention is to provide a wire feeding device that can be taken as wide as possible, and that can stop the feeding of the electric wire while rotating the rotational driving force generating device and the transmission device, and an electric wire length measuring device including the electric wire feeding device.

Claim 1 as a solution means for achieving the above object is an electric wire feeding device provided in an electric wire length measuring device for feeding an electric wire led out from an electric wire storage device to a previous processing device by a predetermined length. The wire feeding device extends in the front-rear direction and is provided on the lower side of the electric wire passage that accommodates the electric wire and rotates about an axis extending in the width direction, and is rotated around an axis provided on the upper side of the electric wire passage and extending in the width direction. An upper roller that urges at least one of the upper roller and the lower roller toward the electric wire passage, and the upper roller and the lower roller are surrounded by a rotational driving force generator or a rotational driving force generator and a transmission device. It is configured to rotate and drive in the opposite direction so that the peripheral speeds of the surfaces are substantially the same, and to push the electric wire accommodated in the electric wire passage with the upper roller and the lower roller and to send it forward. at least one of, the swing of the provided in the arm at one end of the arm rotatably mounted to the arm shaft extending in the width direction, to move up or down away from the wire passage, which Thus it is composed a rotational driving force generator or rotational drive force generator and the transmission so as to stop the feeding of the wire while being rotated.

  When the electric wire led out from the electric wire storage device is accommodated in the electric wire passage so that the longitudinal direction thereof extends in the front-rear direction, the lower roller and the upper roller come into contact with the electric wire with a pressing force, and the upper roller and the lower roller are When rotating in the opposite direction, the electric wire is sent to the previous processing device.

  In this case, since the upper roller and the lower roller are rotationally driven so that the peripheral speeds of the outer peripheral surfaces are substantially the same, the force for feeding the electric wire forward is given to the lower roller and the upper roller almost evenly. Therefore, even if it is a thick electric wire, the electric wire is sent to the processing apparatus with high accuracy by a predetermined length without causing slippage. Since the electric wire is difficult to slip, the pressing force of the roller can be kept small. Therefore, even if it is a thin electric wire, a deformation | transformation etc. do not generate | occur | produce in an electric wire. As a result, the range of the thickness of the electric wire that can be sent is widened as much as possible.

Further, when at least one of the upper roller and the lower roller is moved away from the wire passage, since the feed of the wire is stopped, it is possible to stop the rotation driving force generating unit, the feed of the wire while rotating the transmission. Therefore, for example, when a plurality of pairs of the upper roller and the lower roller are provided in parallel and share the rotational driving force generation device and the transmission device, the operation of the specific upper roller or lower roller can be stopped.

The electric wire feeding device according to claim 2 is the electric wire feeding device according to claim 1, wherein the lower roller and the upper roller are rotated through a transmission device using a belt or a chain by a single motor or other rotational driving force generator. It is configured to drive.

  In this way, the lower roller and the upper roller can be rotationally driven by a single rotational driving force generator.

  According to a third aspect of the present invention, there is provided a wire length measuring device according to the first or second aspect, a measuring device that measures a value related to rotation of the lower roller or the upper roller, and an output of the measuring device becomes a set value. And a controller for controlling the rotational drive of the lower roller and the upper roller.

  In the electric wire length measuring device, the rotation driving of the lower roller and the upper roller is controlled by the control device so that the output of the measuring device becomes a set value. In that case, the effect obtained by the electric wire feeding device according to claim 1 or 2 can be obtained in the same manner.

The electric wire feeding device according to claim 1 applies a force for feeding the electric wire forward to the lower roller and the upper roller almost evenly, and even with a thick electric wire, the electric wire can be accurately fed by a predetermined length without causing slippage. In addition, the roller pressing force can be kept small so that even if it is a thin wire, the wire can be prevented from being deformed, etc., and the range of the thickness of the wire to be sent can be made as wide as possible. driving force generating device, the feed of the wire while rotating the transmission can be a stop, for example, provided the upper roller and lower roller pairs in parallel, in these rotary driving force generating device, when sharing the transmission The operation of a specific upper roller or lower roller can be stopped.

  According to the second aspect, the lower roller and the upper roller can be rotationally driven by a single rotational driving force generator.

  The electric wire length measuring device according to claim 3 can similarly obtain the action obtained by the electric wire feeding device according to claim 1 or claim 2.

  Hereinafter, embodiments of the wire feeder of the present invention and a wire length measuring device including the same will be described. A description will be given using these orientations assuming the front-rear direction, the width direction, and the height direction orthogonal to each other. In the case of this embodiment, referring to FIG. 4, the horizontal direction of the figure is the front-rear direction, the left side of the figure is the front, and the right is the rear, when viewed from the side. In addition, the direction perpendicular to the paper surface of the figure is the width direction, and the vertical direction of the figure is the height direction. As shown in FIG. 4, a wire storage device B is provided after the wire length measuring device A, and a processing device C is provided before the wire length measuring device A. And this electric wire length measuring apparatus A exhibits the function to send the electric wire 200 derived | led-out from the electric wire storage apparatus B to the processing apparatus C before only predetermined length. The processing apparatus C includes, for example, a pressure welding machine, a crimping machine, a welding machine, and other processing equipment. For example, the pressure welding of the electric wire 200 to the pressure welding connector, the crimping of the electric wire 200 to the crimping contact, and the welding of the electric wire 200 to the contact. , Do other processing. Accordingly, the electric wire 200 sent from the electric wire length measuring device A to the processing device C by a predetermined length is subjected to, for example, pressure contact to the pressure contact connector, pressure contact crimping, wire cutting, and other processing. I try to manufacture harnesses. In the electric wire storage device B, the number of continuous electric wires 200 necessary for manufacturing one wire harness is stored, and the electric wires 200 are maintained in a substantially parallel relationship in the width direction by being pulled out by applying a pulling force. It is derived as it is. The electric wire 200 may be plural as described above, or may be singular. Although the storage method of the electric wire 200 is not limited, it may be rolled, for example.

  The wire length measuring device A includes a wire feeding device 100, a measuring device 300 that measures a value related to the rotation of the lower roller 121 or the upper roller 131 described later, and a lower roller so that the output of the measuring device 300 becomes a set value. 121 and a control device 400 that controls the rotational drive of the upper roller 131.

  The wire feeding device 100 includes a lower roller 121 that extends in the front-rear direction and is provided below the wire passage 111 that accommodates the wire and rotates in the width direction, and a shaft that is provided above the wire passage 111 and extends in the width direction. And an upper roller 131 that rotates around. The axis in this case may be a real axis or a virtual axis indicating the center of rotation. When there are a plurality of electric wires 200, the electric wire passage 111, the lower roller 121, and the upper roller 131 are provided for each electric wire 200, but when there is a single electric wire 200, only one set of them is provided.

  In the case of this embodiment, the wire feeding device 100 is provided with a guide member 110, and the guide member 110 is provided with a wire passage 111 extending in the front-rear direction, and the continuous wire 200 led out from the wire storage device B is provided. The electric wire passage 111 is accommodated so as to be movable back and forth. The electric wire passage 111 is a space through which the electric wire 200 passes. The electric wire passage 111 is provided for each electric wire 200. When a plurality of electric wire passages 111 are provided, the electric wire passages 111 are provided substantially in parallel in the width direction. In this embodiment, the electric wire passage 111 is formed in the internal space of the hole penetrating the guide member 110. However, the guide member may be provided with a groove opened upward and formed by the internal space of the groove. Strictly speaking, the electric wire passage 111 is formed by a part of the internal space. The guide member 110 has a lower window 113 that opens the wire passage 111 downward, and the wire passage 111 upward so that the lower roller 121 and the upper roller 131 can contact the wire 200 accommodated in the wire passage 111. An upper window 112 that opens is opened. When the wire passage 111 is formed in the inner space of the groove opened upward, only the lower window is provided. As described in this embodiment, the electric wire passage may be formed in the internal space of the guide member, but the electric wire passage is not specified by the internal space of the tangible object, and is specified as a space extending forward and backward in the vicinity of the electric wire feeding device. Also good.

  The lower roller 121 is provided on the lower shaft 122 provided below the guide member 110 and extending in the width direction so as not to move relative to the lower shaft 122. When a plurality of lower rollers 121 are provided, each lower roller 121 may be provided on the same lower shaft 122 as in this embodiment, or may be provided on separate lower shafts. The upper roller 131 is provided on the upper shaft 132 provided on the upper side of the guide member 110 and extending in the width direction so as not to move relative to the upper shaft 132. When a plurality of upper rollers 131 are provided, each upper roller 131 may be provided on the same upper shaft 132 as in this embodiment, or may be provided on separate upper shafts. It is preferable that the lower roller 121 and the upper roller 131 are provided with a groove that guides the electric wire 200 by denting the outer peripheral surface in the radial direction so that the electric wire 200 does not escape in the width direction. This groove is preferably formed in a U shape or a V shape when viewed from the front and back. Furthermore, it is preferable to make a small notch in the groove so that the electric wire 200 does not slip easily. The present invention includes an embodiment in which the outer peripheral surfaces of the lower roller and the upper roller have a constant radius in the width direction and no such groove is provided.

  Then, at least one of the upper roller 131 and the lower roller 121 is urged toward the electric wire passage 111, and the upper roller 131 and the lower roller 121 are rotated in the reverse direction so that the peripheral speeds of the outer peripheral surfaces are substantially the same. Then, the electric wire 200 accommodated in the electric wire passage 111 is configured to be pushed forward by the upper roller 131 and the lower roller 121 (the electric wire feeding direction is indicated by one arrow in each drawing). The rotational driving of the upper roller 131 and the lower roller 121 in the reverse direction means that the upper roller 131 and the lower roller 121 are rotationally driven so that their rotational directions are different when viewed from the axial direction. This is because the upper roller 131 and the lower roller 121 are arranged opposite to each other with the electric wire passage 111 interposed therebetween, and thus the force to push the electric wire 200 forward from both rollers by rotating in the reverse direction in this way. This is because it can be granted. The upper roller 131 and the lower roller 121 are in contact with the electric wire 200 on the outer peripheral surface. Therefore, the peripheral speeds of the outer peripheral surfaces of the upper roller 131 and the lower roller 121 become the feed speed of the electric wire 200 as they are.

  In the case of this embodiment, the upper roller 131 is configured to be urged toward the electric wire passage 111, that is, downward. That is, the wire feeding device 100 is provided with an arm shaft 142 extending in the width direction. The arm 141 is provided such that the middle part thereof is rotatable with respect to the arm shaft 142, and an upper shaft 132 is provided at one end of the arm 141 so as to be rotatable. A plurality of arms 141 are provided according to the number of electric wires 200, and an upper shaft 132 is provided for each arm 141. However, when there is no need to stop the operation of a specific upper roller or lower roller, The number may be an appropriate number, and the upper axis may be a common one. The electric wire feeding device 100 is provided with an actuator 143 that can be expanded and contracted, such as an oil / pneumatic cylinder, and an operating portion that can be expanded and contracted is connected to the other end of the arm 141, and the arm 141 is operated by the operation of the actuator 143. The upper roller 131 is urged toward the electric wire passage 111 so that the electric wire 200 in the electric wire passage 111 can be pressed (movement of an upward double arrow in FIG. 2). In this embodiment, the upper roller 131 is urged toward the electric wire passage 111 with such a structure, but instead of being configured to urge the upper roller 131 toward the electric wire passage 111 in this way, The lower roller may be configured to be urged toward the electric wire passage, or the upper roller and the lower roller may be configured to be urged toward the electric wire passage.

  At least one of the upper roller 131 and the lower roller 121 is configured to move up or down away from the wire passage 111. In this embodiment, since the configuration is as described above, when the actuator 143 is operated in the opposite direction, the arm 141 swings and the upper roller 131 moves upward away from the wire passage 111. (The movement of the downward double arrow in FIG. 2). In this embodiment, the upper roller 131 is configured to be separated from the electric wire passage 111 with such a structure, but instead of being configured to move the upper roller 131 upward away from the electric wire passage 111 in this way. The lower roller may be configured to move downward so as to be away from the electric wire passage, or the upper roller and the lower roller may be configured to be moved upward or downward so as to be separated from the electric wire passage.

The upper roller and the lower roller are rotationally driven in opposite directions by a motor or other known rotational driving force generator so that the peripheral speeds of the outer peripheral surfaces are substantially the same. The upper roller and the lower roller may be rotationally driven by a dedicated rotational driving force generator, or may be rotationally driven by a common rotational driving force generator. A known transmission device is interposed between the upper roller, the lower roller, and the rotational driving force generator as necessary.

In this embodiment, the lower roller 121 and the upper roller 131 are configured to be rotationally driven by a single motor or other rotational driving force generator 150 via a transmission device 160 using a belt or a chain. . That is, the drive pulley 161 is provided on the drive shaft of the rotational driving force generator 150, the lower pulley 162 is provided on the lower shaft 122 for driving the lower roller 121, and the upper roller 131 is driven on the arm shaft 142. An upper pulley 163 is provided, and the electric wire feeder 100 is further provided with an idler pulley 164 that rotates about an axis extending in the width direction, and a first belt 167 is wound around these pulleys. In this case, the first belt 167 has the inner peripheral surface of the first belt 167 on the outer peripheral surface of one of the lower pulley 162 and the upper pulley 163, and the outer peripheral surface of the first belt 167 on the outer peripheral surface of the other pulley. As a result, the lower pulley 162 and the upper pulley 163 are rotationally driven in the opposite directions as seen from the axial direction. In this embodiment, since the upper shaft 132 is provided on the swinging arm 141, the arm shaft 142 is rotationally driven by the upper pulley 163, and this rotation is transmitted to the upper shaft 132. That is, the arm shaft 142 is provided with a fixed pulley 165, the upper shaft 132 is provided with a moving pulley 166, and the second belt 168 is wound between the fixed pulley 165 and the moving pulley 166. The rotation of the arm shaft 142 is transmitted to the moving pulley 166 without changing the rotation direction. Therefore, the drive pulley 161, the lower pulley 162, the upper pulley 163, the idler pulley 164, the stationary pulley 165, the moving pulley 166, the first belt 167, and the second belt 168 constitute a transmission device 160 that uses a belt or chain. It is composed. The first belt and the second belt are preferably toothed belts having teeth on the inner peripheral surface and the outer peripheral surface in order to accurately maintain the rotational phase, but may be flat belts or other belts. A chain may be used instead of the belt, and in that case, a sprocket is provided instead of each pulley. In the drawing, a tension pulley for adjusting the tension of the second belt 168 is provided in the middle of the arm 141, but this is provided as necessary.

  The measuring device 300 exhibits a function of measuring a value related to the rotation of the lower roller 121 or the upper roller 131. The value related to the rotation of the lower roller 121 or the upper roller 131 is a state quantity that is substantially proportional to the number of rotations of the lower roller 121 or the upper roller 131. In the case of this embodiment, the measuring device 300 is a sensor such as an encoder that detects the rotational speed of the drive shaft of the rotational driving force generator 150. As the measuring device, for example, a rotational driving force generator 150, a sensor that detects the rotational speed of the rotating part of the transmission device 160, or the like can be used.

  The control device 400 is configured by, for example, an electric circuit or the like, and exhibits a function of receiving the output of the measurement device 300 and controlling the rotational driving of the lower roller 121 and the upper roller 131 so that the output of the measurement device 300 becomes a set value. . Control of rotational driving of the lower roller 121 and the upper roller 131 is controlled by an output signal from the control device 400 to the rotational driving force generator 150. By this control, the electric wire 200 can be sent to the processing apparatus C by a predetermined length. Instead of such a control method, the number of rotations of the rotational driving force generator 150 necessary for the electric wire 200 to feed a predetermined length is determined, and the rotational driving force generator 150 is controlled to rotate by this rotational number. Good. The control method of the electric wire length measuring apparatus A provided with the electric wire feeding apparatus 100 of this invention is not limited to these.

  Therefore, when the electric wire feeding device 100 accommodates the electric wire 200 led out from the electric wire storage device B in the electric wire passage 111 so that the longitudinal direction thereof extends in the front-rear direction, the lower roller 121 and the upper roller 131 have a pressing force on the electric wire 200. When the upper roller 131 and the lower roller 121 are driven to rotate in the opposite directions, the electric wire 200 is sent to the previous processing apparatus C.

  In that case, since the upper roller 131 and the lower roller 121 are rotationally driven so that the peripheral speeds of the outer peripheral surfaces are substantially the same, the force for feeding the electric wire 200 forward is given to the lower roller 121 and the upper roller 131 almost equally. It is done. Therefore, even if the electric wire 200 is thick, the electric wire 200 is fed to the processing device C with a predetermined length with high accuracy without causing any slippage. With this processing device C, the cutting position of the electric wire 200, the press-contact position to the press-contact connector, and the crimping are performed. The crimping position to the contact and other machining positions of the electric wire 200 can be obtained accurately. Moreover, since the electric wire 200 is difficult to slide, the pressing force of the upper roller 131 and the lower roller 121 can be suppressed to a small level. Therefore, even if it is the thin electric wire 200, a deformation | transformation etc. will not generate | occur | produce in the electric wire 200. FIG. As a result, the range of the thickness of the electric wire 200 that can be sent becomes as wide as possible.

Further, since at least one of the upper roller 131 and the lower roller 121 is configured to move upward or downward away from the electric wire passage 111, at least one of the upper roller 131 and the lower roller 121 is an electric wire passage. away from 111, since the feeding of the wire 200 is stopped, the rotational driving force generating apparatus 150, the feeding of the wire while rotating the transmission 160 can be stopped. Therefore, for example, when a plurality of pairs of the upper roller 131 and the lower roller 121 are provided in parallel and share the rotational driving force generator 150 and the transmission device 160, the operation of the specific upper roller 131 or the lower roller 121 is stopped. The feeding of the electric wire 200 can be stopped.

The present invention includes an embodiment in which the lower roller and the upper roller are rotationally driven by a plurality of motors or other rotational driving force generators, and an embodiment in which no transmission device is interposed. However, in the case of the above embodiment, the lower roller 121 and the upper roller 131 are configured to be rotationally driven by a single motor or other rotational driving force generator 150 via a transmission device 160 using a belt or a chain. ing. In this way, the lower roller 121 and the upper roller 131 can be rotationally driven by the single rotational driving force generator 150.

  The present invention is not limited to the embodiments described above, but includes other embodiments that are substantially the same. In addition, embodiments in which various modified examples are appropriately combined are also included in the present invention.

It is an enlarged side view which shows the principal part of the electric wire feeding apparatus in the electric wire length measuring apparatus of embodiment. The guide member is cross-sectioned with a surface facing the width direction, and the electric wire passage is shown. The electric wires are shown by virtual lines. Each pulley and the second belt are removed. It is an enlarged side view which shows the principal part of the electric wire length measuring apparatus of embodiment. The second belt is removed. Electric wires are omitted. It is an enlarged plan view which shows the arm vicinity of the electric wire feeding apparatus in the electric wire length measuring apparatus of embodiment. The first belt is removed, and the second belt is cut off in the upper half. It is a reduction side view showing an electric wire length measuring device, an electric wire storage device, and a processing device of an embodiment. It is the rear view which looked at the electric wire length measuring apparatus of embodiment from the back. The rotational driving force generator, the idler pulley, the first belt, and the second belt are removed. Electric wires are omitted. It is a top view which shows a part of guide part when an upper roller etc. are removed from the electric wire length measuring apparatus of embodiment. The right half of the guide part has removed the upper half of the guide part. The first belt is removed. Electric wires are omitted. It is a block diagram which shows the structure of the electric wire length measuring apparatus of embodiment.

A Electrical wire length measuring device B Electrical wire storage device C Processing device 100 Electrical wire feeding device 110 Guide member 111 Electrical wire path 121 Lower roller 131 Upper roller 150 Rotational driving force generator 160 Transmission device 200 Electrical wire 300 Measuring device 400 Control device

Claims (3)

An electric wire feeding device provided in an electric wire length measuring device that sends an electric wire derived from an electric wire storage device to a previous processing device by a predetermined length,
A lower roller provided at the lower side of the wire passage that extends in the front-rear direction and accommodates the electric wire and rotates about an axis extending in the width direction; and an upper roller provided on the upper side of the electric wire passage and rotated about an axis extending in the width direction. ,
At least one of the upper roller and the lower roller is urged toward the electric wire passage, and the peripheral speed of the outer peripheral surface of the upper roller and the lower roller is substantially the same by the rotational driving force generator or the rotational driving force generator and the transmission device. It is configured to be driven to rotate in the reverse direction so that the electric wire accommodated in the electric wire passage is pressed by the upper roller and the lower roller and sent forward.
At least one of the upper roller and the lower roller, the swing of the provided in the arm at one end of the arm rotatably mounted to the arm shaft extending in the width direction, to move up or down away from the wire passage An electric wire feeding device configured to stop the electric wire feeding while rotating the rotational driving force generating device or the rotational driving force generating device and the transmission device. 2. The electric wire feeding device according to claim 1, wherein the lower roller and the upper roller are configured to be rotationally driven by a single motor or other rotational driving force generation device via a transmission device using a belt or a chain.   The electric wire feeding device according to claim 1 or 2, a measuring device for measuring a value related to rotation of the lower roller or the upper roller, and rotational driving of the lower roller and the upper roller so that the output of the measuring device becomes a set value. Wire length measuring device comprising a control device for controlling the wire.

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