JPH0917254A - Electric wire feeding mechanism and electric wire length examining and cutting device employing the electric wire feeding mechanism - Google Patents

Abstract

PURPOSE: To accurately examine the length of an electric wire, accurately cut it off to be a specified length, and thereby accurately prepare a length examined electric wire strand by providing paired first feed rollers, paired second feed rollers and an electric wire movement measuring means. CONSTITUTION: Paired first feed rollers 141 and 142 and paired second feed rollers 131 and 132 are oppositely disposed while a pass line PL is being held in between, and paired encoder rollers 121 and 122 are disposed between each of the paired rollers 141 and 142 and each of the paired rollers 131 and 132 while the pass line PL is being held in between. The paired rollers 121 and 122 are rotated by a wire W to be fed by holding the wire W, and pulses generated are counted, so that the quantity of movement of the wire W is thereby measured. Since tension is applied to the wire W at an interval between each of the paired rollers 141 and 142 and each of the paired rollers 131 and 132, the wire is prevented from being slackened in the aforesaid interval, and the quantity of feeding for the wire W by the paired roller 121 and 122 can thereby be accurately measured. By this constitution, the wire W can thereby be accurately examined in length to be a specified dimension.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire feeder for feeding a long electric wire along a predetermined pass line when the electric wire is scaled and cut into a predetermined size in a manufacturing process of a wire harness. It relates to the feeding mechanism. Further, the present invention relates to an electric wire measuring and cutting device for producing a measuring electric wire material.

[0002]

2. Description of the Related Art A wire harness to be mounted on an automobile or the like includes a large number of length-adjusted electric wires measured in various sizes, and these are bundled so as to form a predetermined branch shape as a whole. Has been done. Here, the scaled electric wire refers to an electric wire (scaled electric wire material) cut into a predetermined size, and a necessary terminal fitting is crimped to an end portion of the electric wire.

Therefore, in the manufacturing process of the wire harness, the length of the electric wire is measured and the length is cut to a predetermined length, and the end of the cut electric wire is peeled off. ， Terminal crimping process of crimping the terminal metal fitting to the core wire exposed by peeling, terminal insertion process of inserting the crimped terminal metal fitting into the connector housing when the connector is attached to the wire end, and binding of each electric wire A number of steps are included, such as a binding step for tying.

Next, a prior art related to the present invention will be briefly described. FIG. 3 is a diagram schematically showing a length cutting process as a prior art of the present application. With reference to FIG. 3A, in the length cutting process, the length cutting device 1 is used which automatically and automatically performs the length measuring and cutting operations of the electric wire W.
This length cutting device 1 is provided with an electric wire feeding unit 6 that pays out the electric wire W while measuring the payout length, and an electric wire guide unit 7 that forms the paid electric wire W into a U-shape.
The reference numeral C1 indicates a cutter that cuts the fed electric wire W, and the reference numerals C2 and C3 indicate clamps that hold both ends of the cut electric wire W.

The electric wire W fed out by the electric wire feeding section 6
Is first curved by the wire guide unit 7 and formed into a U shape. Then, the tip of the electric wire W is clamped by the clamp C2 (see FIG. 3B). Next, the part 7b of the electric wire guide unit 7 is retracted as shown in FIG. 3C, and then the electric wire W is further extended until it reaches a predetermined length while its extension length is being measured. The electric wire W, which has been calibrated in this way, has a cutter C1.
The end of the cut electric wire W is clamped by the clamp C3. The measuring and cutting work of the electric wire W is completed as described above, and the prepared measuring electric wire material is sent to the subsequent process.

[0006]

By the way, the electric wire feeding section 6 includes two sets of feeding rollers 6a and one set of encoder rollers 6b arranged behind the feeding rollers 6a, that is, on the upstream side in the feeding direction of the electric wires W. Is equipped with. Reference numeral 6c is a roller for detecting the seam of the electric wire W and is not directly related to the measuring work.

According to the electric wire feeding section 6, the electric wire W is
It is sandwiched by a pair of delivery rollers 6a and an encoder roller 6b. Each delivery roller 6a is rotated in the direction of the arrow by a drive motor (not shown). Thereby, the electric wire W is paid out to the electric wire guide unit 7 side. On the other hand, each encoder roller 6b is rotatable about its central axis, and when the electric wire W is unwound while the electric wire W is sandwiched, the encoder roller 6b rotates following the unwinding. Therefore, the feeding amount of the electric wire W can be measured by counting the pulses generated by the rotation of the encoder roller 6b.
That is, the electric wire W can be fed out by a predetermined feed amount, and as a result, the electric wire W can be adjusted to a predetermined size.

However, in the mechanism of the electric wire feeding section 6, even if the feeding roller 6a is stopped after feeding the electric wire W by a predetermined feeding amount, the electric wire W behind the feeding roller 6a moves in the feeding direction due to its inertia. Will move. For this reason, there is a case where the electric wire W is loosened between the feed roller 6a and the encoder roller 6b. If the next measuring operation is performed while leaving the looseness of the electric wire W, the loosened portion cannot be measured as the payout amount of the electric wire W, so that the electric wire W can be scaled to a predetermined dimension. become unable. (However, if necessary control is performed so that the number of pulses corresponding to the number of pulses counted by slackening is corrected at the time of counting the pulse in the next measuring operation, the slackened portion is corrected to the next measuring operation. However, such control is extremely complicated,
It is not easy to realize in terms of cost. ) Moreover,
Since the amount of slack in the electric wire W is not constant, continuous measurement and
When the cutting work is performed, there is a problem that the dimensions of the cut electric wire W vary.

Therefore, a first object of the present invention is to provide an electric wire measuring mechanism capable of accurately measuring the electric wire. A second object of the present invention is to provide an electric wire measuring and cutting device capable of accurately cutting an electric wire into a predetermined size and accurately producing a measured electric wire material.

[0010]

In order to achieve the first object of the present invention, an electric wire feeding mechanism according to a first aspect of the present invention provides a long electric wire from an upstream side to a downstream side along a predetermined pass line. In the electric wire feeding mechanism for feeding to the side, a first feed roller pair arranged to face each other with the pass line interposed therebetween and for nipping and conveying the electric wire on the pass line, and a predetermined distance from the first feed roller pair. And a second feed roller pair, which is arranged on the upstream side of the pass line so as to be opposed to each other with the pass line interposed therebetween, for nipping and conveying the electric wire on the pass line, a first feed roller pair, and a second feed. An electric wire movement amount measuring unit that is arranged between the roller pair and measures the movement amount of the electric wire that moves on the path line is provided.

According to this structure, the electric wire can be fed from the upstream side to the downstream side along the path line while the electric wire is sandwiched by the first and second feed roller pairs. At this time, since the first feed roller pair is arranged on the downstream side of the path line and the second feed roller pair is arranged on the upstream side,
In the section between the first feed roller pair and the second feed roller pair, the electric wire can be fed without causing slack. Further, the movement amount of the electric wire can be measured by the electric wire movement amount measuring means. Since the electric wire movement amount measuring means is arranged in the above-mentioned section in which the electric wire is not loosened, the electric wire movement amount can be accurately measured.

In order to achieve the first object of the present invention,
The electric wire feeding mechanism according to claim 2 is the electric wire feeding mechanism according to claim 1, wherein tension is applied to the electric wire to be fed in a section between the first feed roller pair and the second feed roller pair. Means are provided. According to this configuration, the same operation as the first aspect of the invention is achieved. In addition, since the electric wire passing through the section between the first feed roller pair and the second feed roller pair is given a tension by the tension applying means, the electric wire does not loosen in the section. Therefore, the movement amount of the electric wire can be measured more accurately by the electric wire movement amount measuring means.

In order to achieve the first object of the present invention,
An electric wire feeding mechanism according to a third aspect is the electric wire feeding mechanism according to the second aspect, wherein the tension applying means causes the first feed roller pair to have a peripheral speed higher than a roller peripheral speed of the second feed roller pair. It is characterized by including means for rotating. According to this configuration, the same operation as the invention according to claim 2 is exerted. Particularly, in the invention according to the present claim, the electric wire is fed by the first and second feed roller pairs, but the roller peripheral speed of the first feed roller pair is higher than the roller peripheral speed of the second feed roller pair. The electric wire to be fed is always pulled by the first feed roller pair between both feed roller pairs. Therefore, tension is applied to the electric wire passing through the section between the first feed roller pair and the second feed roller pair, and the electric wire passing through this section is not loosened. Moreover, since the roller peripheral speeds of both feed roller pairs are made different from each other, the mechanism of the tension applying means does not become complicated.

To achieve the first object of the present invention,
An electric wire feeding mechanism according to a fourth aspect is the electric wire feeding mechanism according to the second aspect, wherein the tension applying means is required for the second feeding roller pair so as to brake the feeding of the electric wire by the first feeding roller pair. It is characterized in that it includes means for imparting rotation resistance. According to this configuration, the same operation as the invention according to claim 2 is exerted. In particular, in the invention according to the present claim, since the rotation resistance is imparted to the second feed roller pair, if an electric wire is fed while being sandwiched by the first and second feed roller pairs, the first feed roller pair You have to pull the wire. Therefore, the electric wire is not loosened between the pair of feed rollers. Moreover, since the rotation resistance is only applied to the second feed roller pair, the mechanism of the tension applying means does not become complicated.

In order to achieve the first object of the present invention,
An electric wire measuring mechanism according to a fifth aspect is the electric wire feeding mechanism according to any of the second to fourth aspects, wherein the tension applying means is provided with a frictional force generated between the first feed roller pair and the electric wire. A means for holding the electric wire between the two feed roller pairs is provided so that the frictional force generated between the second feed roller pair and the electric wire becomes larger.

According to this structure, the same operation as that of the invention according to any one of claims 2 to 4 is achieved. In addition, the first
Since the frictional force between the feed roller pair and the electric wire is larger than the frictional force between the second feed roller pair and the electric wire, when the electric wire slips between the tensioned feed roller pairs. In this case, this slip always occurs between the second feed roller pair and the electric wire. Therefore, the electric wire to be fed is in a state of being dragged by the first feed roller pair, and it is possible to reliably prevent the electric wire passing between the two feed roller pairs from being loosened. Moreover, since the first feed roller pair on the downstream side in the wire feeding direction pulls the wire, the wire feeding speed does not decrease.

In order to achieve the second object of the present invention,
The wire length measuring and cutting device according to claim 6 draws out a long stocked wire in advance and feeds it along a predetermined path line, and a cutting part for cutting the sent wire. In the electric wire measuring and cutting device for producing a measuring electric wire material as a constituent element of a wire harness by cutting the electric wire fed by the electric wire feeding unit by a predetermined amount, the electric wire feeding unit Are claims 1 to 5.
It is characterized by including the electric wire feeding mechanism described in any one of 1.

According to this construction, the long stock electric wire that has been stocked in advance is fed by the electric wire feeding unit for a predetermined length and is sized. The fed electric wire can be cut by the cutting unit to create a scaled electric wire material. Moreover, since the electric wire feeding section includes the electric wire measuring mechanism according to any one of claims 1 to 4, the same effect as that of the invention according to any one of claims 1 to 4 is achieved.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is a plan view showing the configuration of an electric wire measuring and cutting device A according to an embodiment of the present invention. With reference to FIG. 2, the electric wire measuring and cutting device A is a device used for preparing a measuring electric wire material which is a constituent element of a wire harness by measuring and cutting the electric wire to a predetermined size. The long wire W previously stocked outside the drawing is drawn out, and the wire feed part 10 for feeding this along the pass line PL and the wire feed part 10 are continuously installed and fed. An electric wire guide portion 20 that guides the electric wire W to form a substantially U shape;
A clamp unit 30 that clamps the electric wire W and a cutting unit 40 that cuts the electric wire W are provided. That is, in the electric wire measuring and cutting device A, the electric wire W is formed into a substantially U-shape and is fed, and when the predetermined amount is fed, the electric wire W is clamped and cut to cut a predetermined amount. It is possible to create a scaled electric wire material. Hereinafter, each part will be described.

(1) Electric Wire Feeding Section FIG. 1 is a schematic view schematically showing an electric wire feeding mechanism adopted in the electric wire feeding section 10. Hereinafter, FIGS. 1 and 2
The electric wire feeding unit 10 will be described in detail with reference to FIG.
The electric wire feeding unit 10 draws an electric wire W from a reel station (not shown) and sends the electric wire W to the electric wire guiding unit 20 side along a pass line PL. Then, the electric wire W is calibrated in cooperation with the electric wire guide portion 20.

The feature of this embodiment resides in the structure of the above-mentioned electric wire feeding mechanism. This electric wire feeding mechanism has a first feed roller pair 141, 142 and a second feed roller pair 131, 132. And encoder roller pair 12
1, 122, and the first feed roller pair 141, 142 and the encoder roller pair 12 from the downstream side (upper side in FIG. 2) along the pass line PL.
1, 122, the second feed roller pair 131, 132, and the first and second feed roller pairs 141, 142, 1
31 and 132 are driven to rotate together by a motor M (only shown in FIG. 1) as a drive source,
The electric wire W can be fed along the pass line PL while sandwiching the electric wire W. The electric wire W to be fed includes the first feed roller pair 141 and 142 and the second feed roller pair. The point is that tension is applied in the section between 131 and 132.

First and second feed roller pairs 141, 1
42, 131, and 132 are the pass lines P, respectively.
It is arranged so as to sandwich L. That is, the feed roller 1
The electric wire W is sandwiched between the feed roller 41 and the feed roller 142, and the feed roller 131 and the feed roller 132, and is fed along the pass line PL. The encoder roller pairs 121 and 122 are for measuring the amount of movement of the electric wire W moving on the pass line PL, and include the first feed roller pair 141 and 142 and the second feed roller pair 131 and 132. It is located between. The encoder roller pairs 121 and 122 are also arranged so as to face each other with the pass line PL sandwiched therebetween, and the electric wire W can be sandwiched therebetween. The encoder roller pairs 121 and 122 are
By sandwiching the electric wire W, the electric wire W is rotated so as to be rotated. Then, by counting the pulse generated when the encoder roller pair 121, 122 is rotated by a counter (not shown),
The amount of movement of the electric wire W can be measured.

In this embodiment, the first feed roller pair 14
The tension is applied to the electric wire W in the section between the first and second feeding rollers 131 and 132 by the configuration described later. As a result, it is possible to prevent the electric wire W from being loosened in the section, and to prevent the encoder roller pair 121, 12
It is intended to accurately measure the feed amount of the electric wire W by 2. Next, a mechanism for applying tension to the electric wire W will be described.

First, the first feed roller pair 141, 142
Is driven to rotate by a motor M. Specifically, the drive shaft M1 is connected to the motor M, and the screw M2 is formed on the drive shaft M1. A gear M3 (only FIG. 1 is shown) is formed on the feed rollers 141 and 142, and a screw (not shown) that can be screwed into the screw M2 of the drive shaft M1 is formed on the gear M3. Are formed, and both are screwed together. These can be configured by, for example, a worm mechanism. Further, each feed roller 141, 142 is provided with a pulley M4 so that a belt for interlocking the second feed roller pair 131, 132 can be hung.

On the other hand, the feed rollers 131 and 132 forming the second feed roller pair are provided with a pulley M4. The timing belt B1 is stretched around the feed roller 141 and the feed roller 131, and between the feed roller 142 and the feed roller 132. Both pulleys M4
The so-called PCDs are substantially the same, and as a result, the respective feed rollers 141, 142, 131, 132
It is rotated at substantially the same number of rotations. A chain or the like may be used instead of the timing belt B1.

The outer diameter of each of the feed rollers 141, 142 forming the first feed roller pair is set to be larger than the outer diameter of each of the feed rollers 131, 132 forming the second feed roller pair (book). In the embodiment, the feed rollers 141, 14
The outer diameter of 2 is 63.66 mm, and the feed rollers 131 and 13 are
The outer diameter of 2 is set to 63 mm. ). Therefore,
When the motor M is driven, the peripheral speed of the feed rollers 141, 142 becomes faster than the peripheral speed of the feed rollers 131, 132. That is, the electric wire W to be fed is always in a state of being pulled by the first feed roller pair 141, 142, and the section between the first feed roller pair 141, 142 and the second feed roller pair 131, 132. At wire W
Tension is applied to.

Further, in this embodiment, the friction coefficient between the first feed roller pair 141, 142 and the electric wire W is larger than the friction coefficient between the second feed roller pair 131, 132 and the electric wire W. It is set to be large. In particular,
Diamond coating is applied to the outer peripheral surfaces of the feed rollers 141 and 142. Further, the first and second feed rollers 141, 142, 131, 132 are slid by a slide mechanism using a cylinder, which will be described later. That is, each roller pair,
That is, the feed rollers 141 and 142 and the feed rollers 131 and 132 can be displaced to a position where they approach each other and a position where they move away from each other, and the electric wire W is sandwiched by approaching each other. Is able to. And the first
The pair of feed rollers 141 and 142 and the pair of second feed rollers 131 and 132 hold the electric wire W with the same holding force.

Therefore, the first feed roller pair 141,1
The frictional force generated between 42 and the electric wire W is larger than the frictional force generated between the second feed roller pair 131, 132 and the electric wire W. Therefore, if slippage occurs in the electric wire W to be sent, the second feed roller pair 131, 1 must be used.
It will occur between 32 and the electric wire W. That is, the electric wire W to be fed is in a state of being dragged by the first feed roller pair 141, 142, and the first feed roller pair 14
In the section between the first and second feeding rollers 131 and 132 and the second feeding roller pair 131 and 132, the electric wire W is always in a tensioned state. Moreover, since the electric wire W always slips between the second feed roller pair 131, 132 and the electric wire W, the electric wire W does not slip.
It is also possible to prevent a decrease in the feeding speed of the electric wire W due to the slip of the wire.

Further, in this embodiment, a nozzle 15 is provided for guiding the tip of the electric wire W sent from the first and second feed roller pairs 141, 142, 131 and 132 to the electric wire guide portion 20. The structure of the nozzle 15 will be described in detail later. Incidentally, reference numerals 111 and 11
2 is a roller for detecting the joint of the electric wire W,
There is no direct relationship with the feeding and measuring work of the electric wire W.

Next, the slide mechanism will be described. This slide mechanism includes a first feed roller pair 141,
142, the second feed roller pair 131, 132, and the encoder roller pair 121, 122 are relatively slid in the left-right direction in FIG. That is, the slide mechanism includes the feed rollers 141, 1
42, the feed rollers 131, 132, and the encoder rollers 121, 122 are slid to a scale position in which the electric wire W is sandwiched by being relatively close to each other, and a standby position in which the electric wire W is not fed by being relatively separated from each other. It is designed to let you.

More specifically, the feed roller 141 on the side of the first feed roller pair 141, 142 and the encoder roller 121 are slid together, and the feed roller on the side of the first feed roller pair 141, 142 is formed. 142
And the encoder roller 122 are slid together. Further, the feed roller 131 on the side of the second feed roller pair 131, 132 and the seam detection roller 111 are slid together, and the second feed roller pair 131,
132 side feed roller 132 and seam detection roller 1
12 and 12 are slid together.

Feed roller 141 and encoder roller 12
1 is rotatably supported by a supporting member 71. The feed roller 142 and the encoder roller 122 are rotatably supported by the support member 72. On the other hand, the feed roller 131 and the seam detection roller 111 are rotatably supported by the support member 61, respectively, and the feed roller 132 and the seam detection roller 112 are rotatably supported by the support member 62. There is.

The support member 71 includes a cylinder CYL2.
Are connected. Specifically, the cylinder rod is connected to the back surface of the bent portion of the support member 71, and the cylinder tube is fixed to the fixed frame. Although not shown, a cylinder is similarly connected to the support member 72. On the other hand, the cylinder CYL1 is connected to the support member 61. Also in this cylinder CYL1, the cylinder rod is connected to the back surface of the bent portion of the support member 61, and the cylinder tube is fixed to the fixed frame. In addition,
Although not shown, cylinders are similarly connected on the support member 62 side.

Therefore, as the cylinder rods of the cylinders CYL2 and CYL1 extend, the feed roller 14
1, 142, the feed rollers 131, 132, and the encoder rollers 121, 122 are slid to the above-mentioned scale positions, respectively, and the electric wire W is thereby sandwiched. In this state, the motor M is operated and each feed roller pair 141, 14 is moved through the timing belt B1.
By rotating 2, 131, 132, the electric wire W
Are sent along the pass line PL. And the wire W
Is sent, the encoder rollers 121, 12
2 follows and is rotated, and the amount of movement of the electric wire W, that is, the payout length can be measured. On the other hand, cylinder C
By shortening the cylinder rods of YL2 and CYL1, the feed rollers 141 and 142, the feed roller 13
1, 132 and encoder rollers 121, 122
Each of them is slid to the standby position and separated from the electric wire W.

Guide cylinders 71a and 61a are provided on the back surfaces of the bent portions of the support members 71 and 61. further,
The guide tube 7 is attached to the fixed frame of the support members 71 and 61.
Guide pins P2 and P1 are provided corresponding to 1a and 61a. Although not shown, the support members 72, 62
The side has the same configuration as this. These guide pins P2 and P1 respectively project in a direction orthogonal to the pass line PL. Therefore, the cylinders CYL2, CYL
When 1 expands and contracts, the guide cylinders 71a and 61a are guided by the guide pins P2 and P1 so that each roller 14
1, 142, 131, 132, 121, 122 are slid. Thereby, each roller 141, 142, 13
When the 1,132,121,122 are moved, rattling or the like can be suppressed and the slide can be performed favorably.

Further, elongated holes 71b and 72b are formed in the roller supporting portions of the supporting members 71 and 72 along the direction orthogonal to the pass line PL. The stopper pins P3 and P3 are provided in the long holes 71b and 72b, respectively.
P4 is inserted. Thereby, each support member 71,
When 72 is slid, the slide position is accurately positioned. Therefore, when the electric wire W is sandwiched by the feed rollers 141 and 142, the nip position can be accurately positioned, and good electric wire feeding can be realized. It should be noted that the feed roller 14 is provided by a single supporting member.
1, 131, 121 are supported, and these feed rollers 141, 131, 121 are supported by a single cylinder.
May be slid. When the electric wire W is sandwiched by the feed roller pairs 141, 142, 131, 132, the electric wire W is sandwiched by moving the feed roller pairs 141, 142, 131, 132 along a horizontal plane including the pass line. Alternatively, each feed roller pair 141, 142, 1 may be arranged along a vertical plane including the pass line.
Alternatively, the wires W may be sandwiched by moving the wires 31 and 132.

Next, the structure of the nozzle 15 will be described. The nozzle 15 includes a nozzle body 150 and a nozzle body 1
Stopper arm 15 for opening and closing 50 nozzle holes
2 and a cylinder C for moving the stopper arm 152
YL3, cylinder CYL3 and stopper arm 152
A link plate 153 interposed between the link plate 153 and the link plate 153.
And a spring 154 for urging the spring in a predetermined direction. Nozzle body 150, stopper arm 152, link plate 1
The 53 and the spring 154 are attached to the beam plate 151. The beam plate 151 is provided so as to project from the pass line PL, and constitutes a so-called bracket. The link plate 153 is rotatably supported by the beam plate 151 by a pin 153a. Further, one end of the link plate 153 is rotatably connected to the stopper arm 152 via a pin 152a.

The guide hole 1 is provided on the peripheral wall surface of the nozzle body 150.
5a are formed. The stopper arm 152 is guided by the guide hole 15a so that it can move in and out of the nozzle body 150 along the radial direction of the nozzle 15. That is, when the stopper arm 152 enters the nozzle body 150, the nozzle hole is closed, and when the stopper arm 152 retracts to the outside of the nozzle body 150, the nozzle hole can be opened.

The cylinder CYL3 is attached to the fixed frame on the cylinder tube side, and the tip of the cylinder rod is arranged to face the other end of the link plate 153. The spring 154 elastically biases the other end of the link plate 153 toward the cylinder rod of the cylinder CYL3. As a result, the link plate 153 is always urged to rotate counterclockwise in the figure. Therefore, the stopper arm 1
52 is always biased in the direction of closing the nozzle hole.

When the electric wire W is fed and measured, the cylinder CYL3 is extended to press the other end of the link plate 153, and the link plate 153 rotates clockwise against the urging force of the spring 154. To do. As a result, the stopper arm 1
The nozzle 52 is retracted to open the nozzle hole, and the electric wire W can be fed. On the other hand, when the measurement of the electric wire W is completed and the cylinder CYL3 is shortened, the link plate 153 is rotated counterclockwise by the biasing force of the spring 154. As a result, the stopper arm 152 enters the nozzle body 150, presses the electric wire W, and forcibly stops the feeding of the electric wire W.

(2) Electric Wire Guide Section The electric wire guide section 20 is for forming the electric wire W sent by the electric wire feeding section 10 in a substantially U-shape in advance before measuring. The electric wire guide portion 20 includes a fixed guide block 21, a movable guide block 22, and a pair of guide rods 231 and 232 that guide the movable guide block 22 in the approaching / separating direction with respect to the fixed guide block 21. .

The fixed guide block 21 is used for the electric wire feeding section 1.
It is fixed to the 0 side and has a substantially semi-circular convex peripheral surface 211. Further, the fixed guide block 21 is attached with a pair of guide rods 231 and 232 and one ends of the support rods 213 arranged between them. The other ends of the pair of guide rods 231 and 232 and the support rod 213 are attached to a fixed frame (not shown). The movable guide block 22 is provided with a substantially semi-circular concave peripheral surface 221. The concave peripheral surface 221 is provided on the movable guide block 22.
In the state of being close to the fixed guide block 21, the electric wire guide path R1 having a substantially semi-arcuate shape is sectioned and formed in cooperation with the convex peripheral surface 211.

The electric wire W sent by the electric wire feeding section 10.
Is inserted into the electric wire guide path R1. The inserted electric wire W is guided along the electric wire guide path R1 and is curved and formed in a U shape. When the electric wire W is formed in a U shape,
The movable guide block 22 is separated from the fixed guide block 21 (the position shown by the alternate long and short dash line in the figure). The electric wire W is further sent by the electric wire feeding unit 10 so that the electric wire W is adjusted to a predetermined size.

(3) Clamp Section The clamp section 30 is arranged between the electric wire feeding section 10 and the electric wire guide section 20, and has a first clamp 31 and a second clamp 32. The first clamp 31 introduces the electric wire W sent out from the electric wire feeding unit 10 into the entrance of the electric wire guide path R1, and clamps the vicinity of the portion cut by the cutting unit 40 after the electric wire W is scaled. It is for doing. Further, the second clamp is for holding the tip end of the electric wire W which is formed in the U shape by the electric wire guide path R1 and is then led out from the electric wire guide path R1.

The tip of the first clamp 31 has a nozzle 15
In order to be able to clamp the electric wire W supplied from the electric wire W, the electric wire W projects from the second clamp 32 to the electric wire feeding portion 10 side and approaches the vicinity of the nozzle 15. First clamp 31
The second clamp 32 is attached to the elevating block 33. The cylinder CYL4 is attached to the lower surface of the first clamp 31, and the first clamp 31 is moved up and down. That is, the cylinder CYL4
The expansion and contraction of the first and second clamps 31, 32
Are designed to move up and down as a unit.

When the electric wire W is sent to perform the measuring work,
The cylinder CYL4 is extended so that the first and second clamps 31 and 32 face the inlet and outlet of the wire guide path R1, respectively. Then, the tip of the electric wire W which is formed in a U shape by the electric wire guide path R1 and is sent is clamped by the second clamp 32. Then, after the measurement is completed, the electric wire W is clamped by the first clamp 31. As a result, it becomes possible to cut the adjusted electric wire W while holding it. Also, after the electric wire W is cut, the cylinder C
By shortening YL4, both clamps 31 and 32 holding the electric wire W can be lowered.

(4) Cutting Section The cutting section 40 is arranged between the electric wire feeding section 10 and the clamp section 30 and is for cutting the electric wire W having a predetermined size. The cutting unit 40 includes a pair of cutter blades 41 and 42 and a pair of cylinders CYL that drive the cutter blades 41 and 42.
5 and CYL6. Cutter blade 41, 42
Are attached to the beam portion of the gate-shaped frame 43 that straddles the first clamp 31 so as to face each other via guide bodies 44 and 45, and are movable back and forth in a direction orthogonal to the pass line PL. . It is the cylinders CYL5 and CYL6 that move the cutter blades 41 and 42. The cylinder rods of the cylinders CYL5 and CYL6 are
The cylinder tubes are attached to the back surfaces of the guide bodies 44 and 45, and the cylinder tubes are attached to the beam portions of the portal frame 43.

By the extension of the cylinders CYL5 and CYL6, the cutter blades 41 and 42 come close to each other, and the electric wire W
Can be disconnected. That is, when the measurement of the electric wire W is completed, the cylinders CYL5, CYL6
Is extended. As a result, the cutter blades 41, 42 are moved toward the electric wire W, and the sheared surfaces of the two cutter blades 41, 42 intersect, so that the adjusted electric wire W is cut.

Although the wire guide portion 20, the clamp portion 30, and the cutting portion 40 have the above-described configurations in this embodiment, the wire guide portion 20, the clamp portion 30, and the cutting portion 40 have other configurations. Even if it is a thing, the said electric wire feeding part 10 can be applied. Next, the work of measuring and cutting the electric wire W by the electric wire measuring and cutting device A will be described together with the working effects.

The long wire W previously stocked is sent by the wire feeding unit 10 along the pass line PL. The sent electric wire W is curved and formed into a substantially U shape by the electric wire guide portion 20, and the tip end thereof is clamped by the second clamp 32 of the clamp portion 30. Next, the wire guide 2
The 0 movable guide block 22 slides, the electric wire guide path R1 is opened, and the electric wire W is further fed by the electric wire feeding unit 10. Since the feed amount of the electric wire W is measured by the encoder roller pair 121 and 122, the electric wire W
Is delivered by a predetermined amount and is accurately scaled.
The scaled electric wire W is cut by the cutting unit 40 to create a scaled electric wire material.

Particularly, according to this embodiment, the following operational effects are exhibited. By arranging the first feed roller pair 141, 142 and the second feed roller pair 131, 132 along the pass line PL, it is possible to prevent the electric wire W from being loosened. Therefore, the encoder roller pair 1
The movement amount of the electric wire W can be accurately measured by the reference numerals 21 and 122.

In this embodiment, the first feed roller pair 14
1, 142 and the second feed roller pair 131, 132 have a tension applied to the electric wire W, and the electric wire W is not loosened in this section. Further, the moving amount of the electric wire W can be measured by the encoder roller pair 121 and 122. This encoder roller pair 121,1
Since 22 is arranged in the above-mentioned section where the slack of the electric wire W does not occur, the moving amount of the electric wire W can be accurately measured.

More specifically, at the time of measuring, the electric wire W is fed at a high speed by the feed roller pairs 141, 142, 131, 132, and when the feed amount W is fed by a predetermined amount, the feed roller pair 1 is fed.
When 41, 142, 131, and 132 are stopped, the inertia of the electric wire W may cause looseness. However, in this embodiment, the electric wire W is always fed while being pulled by the first feed roller pair 141, 142. This is because the peripheral speed of the first feed roller pair 141, 142 is faster than the peripheral speed of the second feed roller pair 131, 132, and therefore the first feed roller pair 141,
The feeding of the electric wire W by the second feeding roller pair 13
This is because 1,132 is in a braking state.

Therefore, even if the respective feed roller pairs 141, 142, 131, 132 are suddenly stopped after the electric wire W is fed,
There is no slack in the wire W in the section between the first feed roller pair 141, 142 and the second feed roller pair 131, 132. As a result, the amount of movement of the electric wire W can be accurately measured by the encoder rollers 121 and 122, and even if the measuring operation is continuously performed, the finished dimension does not vary, and the adjusted electric wire material is accurately produced. Can be created. The first pair of feed rollers 141, 14
In order to make the peripheral speed of 2 higher than the peripheral speed of the second feed roller pair 131, 132, the feed rollers 141, 142
The pulley M4 on the feed roller 131, 132 side may be smaller than the pulley M4 on the side.

In this embodiment, when tension is applied to the electric wire W, the feed roller 1 that constitutes the first feed roller pair.
By making the roller diameters of 41 and 142 larger than the roller diameters of the feed rollers 131 and 132 that form the second feed roller pair, the second feed roller pairs 131 and 132 are formed.
Since the peripheral speed of the first feed roller pair 141, 142 is set to be higher than the peripheral speed of, and as a result, a simple means of applying tension to the electric wire W is adopted, the structure of the electric wire supply mechanism It does not become complicated and can avoid a large increase in cost.

Moreover, since the outer peripheral surfaces of the feed rollers 141 and 142 are coated with diamond, a large frictional force can be generated between the first feed roller pair 141 and 142 and the electric wire W. Therefore, when feeding the electric wire W, the first feed roller pair 141, 14
It is possible to prevent slippage between the wire 2 and the wire W, and as a result, even when the wire W is sent at high speed,
It is possible to prevent the reduction of the feeding speed due to the slip of the electric wire W, and to perform the measuring work at high speed. The present invention is not limited to the above embodiment,
As means for applying a tension to the electric wire W, the second feed roller pairs 131, 132 are strongly pressed against each other, for example, by using a spring or the like, so that the respective feed rollers 131, 132 are
It is also possible to adopt a means of giving a rotation resistance to 132. Further, the rotation resistance may be provided by interposing a brake pad, for example, between each of the feed rollers 131 and 132 and their rotation shafts. In short, the feeding of the electric wire W by the first feed roller pair 141, 142 is performed by the second feed roller pair 131, 132.
It will be good if the vehicle is in a braking state. Furthermore, in this case,
It is also possible to eliminate the timing belt B1 and prevent the rotational driving force from being transmitted to the second pair of feed rollers 131 and 132.

Also in such a modified example, the same operational effect as that of the above-described embodiment is obtained. That is, since the electric wire W is always pulled by the first feed roller pair 141, 142, the both feed roller pairs 141, 14
The slack does not occur in the electric wire W between 2, 131 and 132. Moreover, also in this modification, the structure of the electric wire supply mechanism does not become particularly complicated, and a large increase in cost can be avoided. In addition, various design changes can be made within the scope of the present invention.

[0058]

According to the invention of claim 1, when the electric wire is fed along the pass line, the electric wire passing between the first feed roller pair and the second feed roller pair is not loosened. It is possible to accurately measure the amount of movement of the electric wire that moves between the pair of feed rollers while suppressing. Thereby, the electric wire can be accurately scaled to a predetermined size.

According to the invention of claim 2, the same effect as that of the invention of claim 1 can be obtained. In addition, when feeding the electric wire along the path line, tension is applied to the electric wire passing between the first feed roller pair and the second feed roller pair,
It is possible to reliably prevent the electric wire from slackening between the pair of feed rollers. Therefore, the amount of movement of the electric wire moving between the pair of feed rollers can be measured more accurately, and the electric wire can be more accurately adjusted to a predetermined size.

According to the invention of claim 3, the same effect as that of the invention of claim 2 can be obtained. Particularly, in the invention according to the present claim, it is possible to easily generate the tension by avoiding the loosening phenomenon of the electric wire by making the roller peripheral speeds of the first feed roller pair and the second feed roller pair different from each other. Therefore, there is an advantage that the structure of the mechanism can be simplified.

According to the invention of claim 4, the same effect as that of the invention of claim 2 is achieved. In particular, in the invention according to the present claim, since it is possible to easily generate the tension and avoid the slackening phenomenon of the electric wire only by giving the rotation resistance to the second feed roller pair, the structure of the mechanism is extremely simple. There is an advantage that can be done. According to the invention of claim 5, the same effects as those of the invention of any of claims 2 to 4 can be obtained. In addition, even if a slip occurs on the electric wire sent, this slip will
Since it always occurs between the second feed roller pair, the electric wire is in a state of being dragged by the first feed roller pair, and it is possible to more reliably prevent the electric wire passing between the two feed roller pairs from being loosened. it can. Therefore, the movement amount of the electric wire can be measured even more accurately, and as a result, the electric wire can be more accurately measured.

According to the invention of claim 6, the same effect as that of the invention of any one of claims 1 to 5 can be obtained. That is, the electric wire sent by the electric wire feeding unit can be accurately measured and cut. Therefore, it is possible to accurately manufacture the scaled electric wire material having a predetermined length.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an electric wire feeding mechanism in an electric wire feeding unit.

FIG. 2 is a plan view showing the configuration of an electric wire measuring and cutting device according to an embodiment of the present invention.

FIG. 3 is a diagram schematically showing a schematic configuration of a conventional wire length measuring and cutting device.

[Explanation of symbols]

 M motor PL pass line 121 encoder roller 122 encoder roller 131 feed roller 132 feed roller 141 feed roller 142 feed roller

Claims (6)

[Claims] 1. An electric wire feeding mechanism for feeding a long electric wire from an upstream side to a downstream side along a predetermined pass line, wherein the electric wires are arranged so as to face each other with the pass line interposed therebetween, and the electric wires on the pass line are clamped. And a first feed roller pair for transporting the first feed roller and a first feed roller pair, which are arranged at a predetermined distance from each other on the upstream side of the pass line so as to face each other with the pass line sandwiched therebetween, and to sandwich the electric wire on the pass line. A pair of second feed rollers for transporting the electric wires, and an electric wire movement amount measuring unit arranged between the first feed roller pair and the second feed roller pair for measuring the movement amount of the electric wire moving on the path line. An electric wire feeding mechanism characterized by being provided. 2. The electric wire feeding mechanism according to claim 1, further comprising a tension applying means for applying a tension to the electric wire to be fed in a section between the first feed roller pair and the second feed roller pair. An electric wire feeding mechanism characterized in that 3. The electric wire feeding mechanism according to claim 2, wherein the tension applying means includes means for rotating the first feed roller pair at a peripheral speed higher than a roller peripheral speed of the second feed roller pair. An electric wire feeding mechanism. 4. The electric wire feeding mechanism according to claim 2, wherein the tension applying means brakes the electric wire feeding by the first feeding roller pair.
An electric wire feeding mechanism comprising means for imparting a required rotation resistance to the second feeding roller pair. 5. The electric wire feeding mechanism according to any one of claims 2 to 4, wherein the tension applying means includes a frictional force generated between the first feeding roller pair and the electric wire.
An electric wire feeding mechanism comprising means for holding an electric wire between the pair of feed rollers so that the frictional force generated between the pair of feed rollers and the electric wire becomes larger. 6. An electric wire feeding apparatus comprising: an electric wire feeding section for pulling out a long stocked stock wire in advance and feeding it along a predetermined pass line; and a cutting section for cutting the sent electric wire. An electric wire long-length cutting device that creates a long-length electric wire material that is a constituent element of a wire harness by cutting an electric wire that has been sent by a predetermined amount by a cutting unit, wherein the electric wire feeding unit comprises: An electric wire length cutting device comprising the electric wire feeding mechanism according to any one of 1.