JP2008271632A - Wire stripper, wire harness pressure-welding machine and wire stripping method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire stripper capable of efficiently stably forming a stripping margin at all times irrespective of the length of a wire or the stripping margin, and preventing the wire from extending. <P>SOLUTION: This wire stripper 1 is provided with a clamping means 3 for clamping one end of a wire W to pull it out, a wire cutting means 5 for cutting the wire W into a predetermined length, a sheath cutting means 7 for cutting only a sheath D of the other end of the wire W into a predetermined length, and a stripping margin forming means 9 for removing the sheath D of the other end to expose a core material E. The stripping margin forming means 9 is provided with a stripping means 67 for sandwiching a portion near to the cut position of the sheath D and stripping it, and a pair of vertical wire sandwiching means 65, 69 integrally moving by an uneven engaging structures 79, 81 based on a power transmitted from the stripping means 67. The wire cutting means 5, the sheath cutting means 7 and the stripping margin forming means 9 are provided so as to be vertically paired so that an upper unit 23 and a lower unit 25 can be integrally approximate or separate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a clamp unit that clamps one end of a wire and pulls the wire to a predetermined length, a wire cutting unit that cuts the wire drawn by the clamp unit to a predetermined length, and the other end of the cut wire A wire strip device comprising: a coating cutting means for cutting only the coating on the side at a predetermined position; and a stripping margin forming means for removing the coating on the other end side of the cut coating to expose the core material. The present invention relates to a wire harness pressure welding machine and a wire strip method using the wire strip device.

For electrical equipment such as automobiles and electronic devices such as personal computers, wire rods in which a plurality of wires each having a connector attached to an end called a wire harness are bundled are used. When manufacturing such a wire harness, a wire harness press-connecting machine as shown in Patent Document 1 below is used, and the connector is press-attached to the end of the wire.
On the other hand, when the connector is attached to the other end opposite to the end of the wire to which the connector is attached, and when the so-called stripping allowance is formed to remove the coating of the end of the wire and expose the core material There is.

Among these, in the latter case, there is a mechanism in which a device including a cutter blade 303, a stripper blade 305, and a pressing means 307 as shown in FIG. 22 is combined with a major clamp unit 301 that is a wire W drawing means. The covering D was peeled off by the tensile force of the major clamp unit 301 located far from the pressing means 307.
That is, the wire W is cut by the cutter blade 303 as shown in FIG. 22A, the coating D is cut by the stripper blade 305, and then the measure clamp unit 301 is pulled out as shown in FIG. 22B. The stripping allowance B having a predetermined length in which the core material E is exposed at the end portion of the wire W is formed by being moved greatly in the direction A.
JP-A-4-277477

However, in the method using the tensile force by the major clamp unit 301, the tensile force acts over the entire length of the wire W, so that the amount of elongation of the wire W becomes large and formed at the end of the wire W. There is a problem that the length of the stripping allowance B is not stable.
Further, the elongation of the wire W is related to the length of the wire W, and the elongation of the stripping allowance B tends to increase as the wire W becomes longer.

  The present invention has been made on the basis of the above points, and the object of the present invention is to provide a wire having a stable and efficient stripping length regardless of the length of the wire, and without causing any wire elongation. A strip device, a wire harness pressure welding machine, and a wire strip method are provided.

  In order to achieve the above object, a wire strip device according to claim 1 of the present invention comprises a clamp means for clamping one end of a wire to draw out the wire by a predetermined length, and a wire drawn by the clamp means to a predetermined length. Wire cutting means for cutting, coating cutting means for cutting only the coating on the other end side of the cut wire at a predetermined position, and stripping allowance for removing the coating on the other end side of the cut coating and exposing the core material In the wire strip device comprising the forming means, the stripping allowance forming means is integrated with the strip means for sandwiching and stripping the vicinity of the cutting position of the coating, and power is transmitted from the strip means so as to be integrated by the uneven engagement structure. A pair of upper and lower wire clamping portions that move; and further, the wire cutting means, the coating cutting means, and the peeling allowance forming means Has been respectively provided above and below the pair, it is characterized in that it is held Among approach the unit of the upper unit and the lower respectively in unison, by a respective separate base frame so away.

  The wire strip device according to claim 2 is the wire strip device according to claim 1, wherein the wire cutting means has an upper cutter blade disposed on the upper side, an upper cutter holder for holding the upper cutter blade, and a lower side. And a lower cutter holder that holds the lower cutter blade. The upper cutter blade and the upper cutter holder are formed by forming a peeling allowance. An air flow path for sucking and discharging the coating waste is formed, and the lower cutter holder is formed with a plurality of comb-shaped slit portions capable of individually accommodating a plurality of wires. It is characterized by this.

  According to a third aspect of the present invention, in the wire strip device according to the first or second aspect, the covering cutting means is disposed on the upper side and is formed in a semicircular arc shape capable of individually cutting a plurality of wires. An upper stripper blade having a plurality of blade portions, an upper pressing portion provided on the side of the upper stripper blade, provided integrally with the upper stripper blade, and disposed on the lower side, individually cutting a plurality of wires A lower stripper blade having a plurality of blade portions that are removed in a semicircular arc shape, and a lower press provided on the side of the lower stripper blade and projecting toward the upper pressing portion by the biasing means A plurality of wires extending in the longitudinal direction of the wire that can individually hold a plurality of wires on the pressing surface of the lower pressing portion. It is characterized in that the groove is formed.

  The wire strip device according to claim 4 is the wire strip device according to any one of claims 1 to 3, wherein the peeling allowance forming means is an upper wire holding portion disposed on the upper side, and the upper wire holding portion. Strip means for moving a predetermined stroke to one end side of the wire being clamped, a lower wire holding portion arranged on the lower side, a guide mechanism for sliding the lower wire holding portion in the longitudinal direction of the wire, and A lower slider urging means for urging the lower wire clamping portion to move to the other end side of the wire is provided.

  The wire strip device according to claim 5 is the wire strip device according to claim 4, wherein the strip means slides in the longitudinal direction of the wire integrally with the upper wire holding portion, and a side surface of the upper slider. A guide roller provided at the center, a swing arm that swings at a predetermined angle around a swing fulcrum, and has a semicircular arc-shaped engaging recess that engages with the guide roller at one end, The tip of the slider is connected to the other end of the swing arm, and the main body includes swing drive means that is held by the upper base frame.

  A wire strip device according to claim 6 is the wire strip device according to claim 4 or 5, wherein a plurality of protrusions extending in the wire alignment direction are provided on the holding surfaces of the upper wire holding portion and the lower wire holding portion. A strip is formed, and both ends of the wire alignment direction on the lower surface of the upper wire holding portion are provided with protruding protrusions protruding downward, while the wire on the upper surface of the lower wire holding portion is provided. Engagement recesses that engage with the engagement projections are provided at both ends in the alignment direction.

  The wire harness pressure welding machine according to claim 7 is a wire supply device that feeds the wire wound on the winding drum onto the processing line, and a wire that conveys the wire fed on the processing line toward the processing site. A feeder, a wire return device that returns the wire conveyed toward the processing site to the winding drum side, a connector pressure welding device that presses and attaches a connector to one end of the wire, and a wire strip that forms a stripping allowance at the other end of the wire In a wire harness pressure welding machine comprising a device and a movable chuck device that clamps and pulls out one end of the wire, the wire strip device according to any one of claims 1 to 6 is applied as the wire strip device. It is what.

  Further, the wire strip method according to claim 8 includes a wire drawing process for clamping one end of the wire and drawing the wire to a predetermined length, an upper wire cutting means, a covering cutting means, and a stripping allowance forming means. An upper stripper unit, an upper stripper unit, a lower wire cutting means, a coating cutting means, and a lower stripper unit provided with a stripping allowance forming means in an approaching direction; and the upper stripper unit. And the lower stripper unit are moved to the working position to cut and hold the wire, cut the coating, and hold the wire simultaneously, and the working positions of the wire cutting means and the covering cutting means remain unchanged. In the peeling margin forming step of operating only the peeling margin forming means and exposing the core material of the peeling margin, The operating position of the wire cutting means, the covering cutting means and the stripping forming means remains the same, and the clamping means for clamping one end of the wire is moved in the wire drawing direction to complete the strip and the coating separated from the wire. It has a strip completion / separation process for sucking and discharging waste.

The following actions are obtained by the above means. First, it is not a method of removing the coating by pulling one end of the wire using the clamping means, but by holding the vicinity of the cutting position of the coating by the wire clamping part and moving the clamping part by a predetermined stroke by the strip means. By adopting the method of forming, the length of the stripping margin is stabilized and the elongation of the wire can be suppressed.
Further, by adopting the concavo-convex engagement structure, the vertically separated movement of the pair of wire clamping portions and the integral movement of the wire drawing direction are realized.
In addition, by forming the clamping means for clamping one end of the wire, the coating cutting means for cutting the coating of the wire, and the peeling allowance forming means for forming the peeling allowance on the wire separately, the covering and the core generated at the time of forming the peeling allowance The frictional force between the materials is reduced.
In addition, a pair of upper and lower wire cutting means, covering cutting means, and stripping allowance forming means are provided, and the upper unit and the lower unit are integrated to approach and separate from each other, thereby cutting the wire. And the cutting process of the coating and the forming process of the stripping allowance are executed almost simultaneously, and it is possible to return to the original position at the same time after the process is completed.

In addition, when an air flow path is formed inside the upper cutter blade and the upper cutter holder to suck and discharge the coating waste, unnecessary coating waste generated by the formation of the peeling allowance is almost the same as the formation of the peeling allowance. It is quickly discharged to the outside at the timing and collected in one place.
Further, when a plurality of comb-like slit portions are formed in the lower cutter holder, twisting and crossing between wires are prevented, and smooth cutting of the wires is performed.

In addition, when a plurality of blade portions corresponding to the number of wires cut in a semicircular arc shape are formed on both the upper stripper blade and the lower stripper blade, it is possible to cut only the coating without damaging the core material. It becomes possible.
Further, by providing the lower pressing portion in a movable state imparted with a protruding tendency by the urging means, excessive pressing force of the wire is prevented, and it does not hinder the smooth cutting of the upper stripper blade and the lower stripper blade. .
Moreover, when the several groove part extended in the longitudinal direction of a wire is formed in the pressing surface of a lower press part, the twist and cross | intersection between wires are prevented and a smooth cutting | disconnection of a coating | cover comes to be performed.

In addition, when a strip means is provided that moves a predetermined stroke by the amount of stripping of the wire that forms the upper wire holding portion that holds the vicinity of the cutting position of the coating, a pulling direction that causes the entire length of the wire to stretch It becomes possible to execute the forming process of the stripping allowance without applying excessive stress.
Also, when the guide mechanism is provided, the wire movement direction can be kept horizontal and smooth wire movement can be executed, and when the lower slider biasing means is provided, the stripping allowance forming process is completed. At the same time, the lower wire clamping portion can be quickly returned to the original position.

Moreover, when the upper slider integrated with the upper wire clamping portion is provided, the upper wire clamping portion can move smoothly in the horizontal direction.
Further, when the swing arm and the swing drive means are provided, a strong force can be transmitted to the guide roller serving as a power point, and the smooth movement of the upper wire clamping portion can be executed.
In addition, when multiple protrusions extending in the wire alignment direction are formed on the holding surfaces of the upper wire holding portion and the lower wire holding portion, the grip force acting on the upper and lower wire holding portions is improved, and the wire moves Time slip is prevented.
In addition, engagement protrusions are provided at both ends in the wire alignment direction on the lower surface of the upper wire holding portion, and the engagement protrusions are engaged with the engagement protrusions at both ends in the wire alignment direction on the upper surface of the lower wire holding portion. When the concave portion is provided, the upper wire holding portion and the lower wire holding portion are securely engaged and integrated by the engaging action of the engaging convex portion and the engaging concave portion without affecting the holding operation of the wire. It is possible to move the wire in the direction of drawing the wire.

According to the wire strip device, the wire harness pressure welding machine, and the wire strip method of the present invention, the stripping allowance is provided because the coating is not forcibly pulled and the portion near the cutting position of the coating is sandwiched and pulled by the stripping margin of the wire. The length of is stable and does not become uneven. Further, the frictional force between the coating and the core material generated at the time of forming the peeling allowance is reduced, so that the wire does not stretch.
In addition, the wire cutting means, the covering cutting means and the peeling allowance forming means are fixed to the base frame so that the upper and lower units are integrally approached and separated from each other, so that the wire cutting, the covering cutting, and the peeling are performed. A series of processing with the formation of the margin can be performed almost simultaneously, and the strip margin can be formed in a short time.

In addition, since the alignment state of the wires is maintained by the plurality of comb-shaped slit portions formed in the lower cutter holder and the groove portions formed in the pressing surface of the lower pressing portion, the wire and the coating are smoothly cut. .
Further, the lower pressing portion is provided in a movable state provided with a tendency to protrude by the urging means, and is configured by engaging convex portions and engaging concave portions at both ends in the wire alignment direction on the clamping surfaces of the upper and lower wire clamping portions. By providing a concave and convex engagement structure, excessive clamping force to the wire is prevented, and the upper and lower wire clamping portions are securely engaged while preventing the breakage and damage of the wire, and the wire is pulled out integrally. The stripping allowance can be formed at the other end of the wire by moving in the direction.

  The best mode for carrying out the present invention will be described below by taking the illustrated embodiment as an example. FIG. 1 is a side sectional view showing a wire strip device and a connector pressure welding device according to the present invention during a cutting / holding process, FIG. 2 is a side sectional view showing an enlarged portion around a wire processing portion, and FIG. 3 is a wire according to the present invention. FIG. 4 is a side sectional view showing the strip processing and the connector pressure welding device during the stripping margin forming process, FIG. 4 is an enlarged side sectional view showing the periphery of the wire processing part, and FIG. 5 is an enlarged view of the main part of the wire strip device of the present invention. 6 is a sectional view taken along the line AA in FIG. 5, FIG. 7 is a sectional view taken along the line BB in FIG. 5, and FIG. 8 is a sectional view taken along the line C-C in FIG. 9 is a view taken along the line DD in FIG. 5, and FIG. 10 is a view taken along the line EE in FIG.

  11 is an enlarged front view of the upper stopper blade, FIG. 12 is an enlarged front view of the lower stripper blade, and FIG. 13 shows a state in which the wire coating is cut by the upper stripper blade and the lower stripper blade. 14 is an enlarged front view, FIG. 14 is a side sectional view of the wire strip device and the connector pressure welding device of the present invention in the wire drawing process, and FIG. 15 is a stripper unit operation process of the wire strip device and the connector pressure welding device of the present invention. FIG. 16 is a side sectional view of the strip completion / separation process showing the wire strip device and the connector pressure welding device of the present invention, and FIG. 17 is a stripper unit origin returning step showing the wire strip device and the connector pressure welding device of the present invention. FIG. 18 is a side sectional view of the wire strip device and connector of the present invention. FIG. 19 is a side sectional view of the connector pressure welding process showing the wire strip device and the connector pressure welding device of the present invention, and FIG. 20 is a sectional view of the wire strip device of the present invention. The side view which shows the wire harness in which the stripping allowance was formed, FIG. 21: is a sectional side view which shows the wire harness press-contacting machine to which the wire strip apparatus of this invention is applied.

  In the present embodiment, as an example, as shown in FIG. 20, a wire harness 100 in which a connector C is press-fitted to one end of a wire W and a stripping allowance B is formed on the other end of the wire W is taken as an example. A wire harness pressure welding machine 201 as shown in FIG. 21 used for manufacturing, and a wire strip device 1 applied to the wire harness pressure welding machine 201, with the wire harness pressure welding centered on the configuration of the wire strip device 1. An outline of the machine 201 will be described, and then a wire strip method executed by using the wire strip apparatus 1 will be described.

  The wire harness pressure welding machine 201 transports the wire W taken up on the take-up drum 203 onto the processing line 205 and the wire W fed out on the processing line 205 toward the processing site 209. Wire feeding device 211, wire return device 213 for returning the wire W conveyed toward the processing site 209 to the winding drum 203 side, connector pressure welding device 215 for pressure fitting the connector C to one end of the wire W, and the wire W A wire strip device 1 that forms a stripping allowance B at the other end of the wire W and a movable chuck device 217 that clamps and pulls out one end of the wire W.

In addition, about the other structure of the said wire harness press-contacting machine 201 except the wire strip apparatus 1, the existing or various structures developed from now on are applicable, and description here is abbreviate | omitted.
Since the movable chuck device 217 is a member closely related to the movement of the wire strip device 1, in the following description, it will be described as the clamping means 3 included in the constituent members of the wire strip device 1.

  The wire strip device 1 of the present invention includes a clamp means 3 having a measuring function for clamping one end of a wire W and drawing the wire W to a predetermined length, and a wire W drawn by the clamp means 3 to a predetermined length. The wire cutting means 5 for cutting the wire, the coating cutting means 7 for cutting only the coating D on the other end side of the cut wire W at a predetermined position, and the coating D on the other end side of the cut coating D are removed, It is basically configured by including a peeling allowance forming means 9 for exposing the core material E.

The clamp means 3 holds a clamp chuck portion 11 that can clamp a plurality of wires W aligned in the width direction, and holds the clamp chuck portion 11 and slides in the drawing direction A and the return direction F of the wire W. The linear guide 16 which is a reciprocating sliding means comprised by the linear block 13 to obtain and the guide rail 15 engaged with this linear block 13 is provided.
The clamp means 3 separates the measure function for setting the length of the wire W, the function as a discharge means for taking out the wire harness 100 as a product, and the unnecessary covering waste G and the wire harness 100 that have been cut. It has a strip function.

A pair of upper and lower wire cutting means 5 are provided together with a covering cutting means 7 and a stripping allowance forming means 9 described later, and are held by separate upper base frames 19 and lower base frames 21, respectively.
The upper unit held by the upper base frame 19 is identified as the upper stripper unit 23, and the lower unit held by the lower base frame 21 is identified as the lower stripper unit 25.
The upper stripper unit 23 can be moved up and down vertically in the vertical direction H by the lifting means 27 and the guide means 29 provided at the top, and the lower stripper unit 25 is lifted and lowered at the lower part 31 and the guide means. 33 can move up and down vertically in the vertical direction H.
Further, the upper stripper unit 23 and the lower stripper unit 25 are configured to approach and separate from each other.

The wire cutting means 5 includes an upper cutter blade 35 disposed on the upper stripper unit 23 side, an upper cutter holder 37 holding the upper cutter blade 35, a lower cutter blade 39 disposed on the lower stripper unit 25 side, It is basically configured by including a lower cutter holder 41 that holds the lower cutter blade 39.
The upper cutter blade 35 is a thin rectangular plate-shaped cutter blade, and a one-blade blade portion obtained by obliquely cutting the drawing direction A side of the wire W is formed at the tip. Further, the upper cutter blade 35 is held by a block-like upper cutter holder 37, and the coating waste G generated by forming the peeling allowance B inside the upper cutter blade 35 and the upper cutter holder 37 is sucked and discharged. For this purpose, an air flow path 43 connected to an air suction device (not shown) is formed.

The lower cutter blade 39 is a thick rectangular plate-like cutter blade, and a single-edged blade portion obtained by obliquely cutting the return direction F side of the wire W is formed at the tip. The lower cutter blade 39 is held by a block-shaped lower cutter holder 41, and the lower cutter holder 41 can accommodate a plurality of wires W individually, as shown in FIG. A slit portion 45 is formed.
The wires W are individually accommodated in these slit portions 45, whereby the wires W are prevented from being twisted or crossed, and the wires W can be smoothly fed.

  The covering cutting means 7 includes an upper stripper blade 47 disposed on the upper stripper unit 23 side, and an upper pressing portion 49 provided integrally with the upper stripper blade 47 on the side of the upper stripper blade 47 on the side of the drawing direction A of the wire W. And a lower stripper blade 51 arranged on the lower stripper unit 25 side, and a side of the lower stripper blade 51 on the side of the wire W in the drawing direction A side, and a compression coil spring 53 as an urging means protrudes toward the upper pressing portion 49 side. It is fundamentally comprised by providing the lower press part 55 arrange | positioned in the state which carried out.

Both the upper stripper blade 47 and the lower stripper blade 51 have a rectangular flat plate shape as shown in FIGS. 11 to 13, and a plurality of blade portions 57 and 59 are formed at the opposed tip portions. Moreover, each blade part 57 and 59 is provided in the position which opposes, and has the shape cut out by the semicircular arc shape so that the several wire W can be cut | disconnected separately.
When cutting the coating D of the wire W, a gap S is formed between the upper stripper blade 47 and the lower stripper blade 51 as shown in FIG. 13, and the blade portion 57 and the blade portion 59 do not reach the core material E. Enter the middle part of the coating D in the vicinity of the core E and cut it.

Accordingly, the non-cut portion K remains in the cover D, but the non-cut portion K is broken when the wire W is moved by the action of the stripping allowance forming means 9 described later, so that the core E is not damaged. Only D can be cut.
Further, as shown in FIG. 7, the length of the wire W that can individually hold a plurality of wires W on the pressing surface 61 of the lower pressing portion 55 that is biased so as to protrude upward by the compression coil spring 53. A plurality of groove portions 63 extending in the direction are formed in an aligned state.

  Therefore, the wire W pressed from above and below by the upper pressing portion 49 and the lower pressing portion 55 is fitted in the groove portion 63 formed on the lower pressing portion 55 side and held in an aligned state, and the compression coil spring 53 is also held. An excessive pressing force is not generated by the elastic action, and the movement of the wire W by the stripping allowance forming means 9 described below is not hindered.

  The stripping allowance forming means 9 includes an upper wire holding portion 65 disposed in the vicinity of the upper stripper blade 47 on the upper stripper unit 23 side, and a predetermined stroke on one end side of the wire W in which the upper wire holding portion 65 is clamped. Strip means 67 to be moved, a lower wire holding portion 69 disposed in the vicinity of the lower stripper blade 51 on the lower stripper unit 25 side, and a guide mechanism for sliding the lower wire holding portion 69 in the longitudinal direction of the wire W 71 and a lower slider urging means 73 that urges the lower wire clamping portion 69 to move toward the other end of the wire W.

The upper wire holding portion 65 and the lower wire holding portion 69 are block-like members, and a plurality of protrusions 75 and 77 extending in the alignment direction L of the wires W are formed on the opposing holding surfaces. Further, at both end portions of the opposing holding surfaces in the alignment direction L of the wires W, an engaging convex portion 79 is provided on the upper wire holding portion 65 side, and an engaging concave portion 81 is provided on the lower wire holding portion 69 side. By engaging the engaging convex portion 79 with the engaging concave portion 81, the upper wire holding portion 65 and the lower wire holding portion 69 can move together in the drawing direction A of the wire W.
In addition, the grip force with respect to the wire W of the upper wire clamping part 65 and the lower wire clamping part 69 improves by providing the said protrusions 75 and 77, and it can move the wire W reliably predetermined stroke, without producing a slip. become.

As shown in FIGS. 7 and 8, the guide mechanism 71 includes a slide base 72 that holds the lower wire clamping portion 69 and two sets of linear guides 83 and 83 that are arranged at a predetermined interval in the alignment direction L of the wires W. And is composed of. The linear guide 83 includes a guide rail 85 and a slider block 87 that is guided by being engaged with the guide rail 85. As an example, the two guide rails 85 and 85 are slid on the lower base frame 21 side, and are slid. Two slider blocks 87 and 87 are respectively attached to the base 72 side.
As shown in FIGS. 7 and 8, the lower slider urging means 73 is constituted by two compression coil springs 89 and 89 arranged between the two sets of linear guides 83 and 83. One end of the two compression coil springs 89 and 89 is locked to the slide base 72, and the other end of the two compression coil springs 89 and 89 is locked to a part of the lower base frame 21. 72 is always urged in the return direction F of the wire W.

The strip means 67 includes an upper slider 91 that slides in the longitudinal direction of the wire W integrally with the upper wire clamping portion 65 described above, and two guide rollers 93 and 93 provided on the inner surface as an example of the upper slider 91. The oscillating arm 97 is configured to basically include a oscillating arm 97 that oscillates at a predetermined angle (for example, about 20 °) around the oscillating fulcrum 95, and oscillating drive means 99 that drives the oscillating arm 97. Yes.
The upper slider 91 is a block-like member that is slidable in the longitudinal direction of the wire W with respect to the upper base frame 19 described above. A concave portion 101 having a rectangular shape in a plan view is provided on the upper surface of the upper slider 91, and the two guide rollers 93, 93 are attached to the left and right inner surfaces of the concave portion 101 in a state in which the two guide rollers 93 and 93 can freely rotate. It has been.

As shown in FIG. 5, the swing arm 97 is a block-like member having a shape in which a portion above the swing support point 95 is bent slightly in the drawing direction A of the wire W. At the lower end of the oscillating arm 97, an engaging recess 103 is formed in a semicircular arc shape that engages with the guide roller 93.
Further, a connecting hole 105 is formed on the other end side of the swing arm 97 with the swing fulcrum 95 interposed therebetween, and is connected to the swing driving means 99 by a connecting pin 107 passing through the connecting hole 105 so as to be freely rotatable. Has been.
The swing drive means 99 is constituted by an air cylinder 109 as an example, and the cylinder body 111 of the air cylinder 109 is fixed horizontally to the upper base frame 19 via a bracket 113. The tip 115 of the slider of the air cylinder 109 is rotatably connected to the connecting hole 105 of the swing arm 97 by the connecting pin 107.

Next, the wire strip method of this invention performed by using the wire strip apparatus 1 comprised in this way is demonstrated based on FIGS. 1-4 and FIGS. 14-19.
The wire strip method according to the present embodiment includes (1) a wire drawing process, (2) a stripper unit operation process, (3) a cutting / holding process, (4) a peeling allowance forming process, and (5) a strip. A completion / separation step, (6) a stripper unit origin return step, (7) a product take-out / wire return step, and (8) a connector pressure contact step are sequentially executed.

(1) Wire drawing process (see Fig. 14)
The wire drawing process is a process of clamping one end of the wire W and drawing the wire W by a predetermined length. A connector C is press-fitted to one end of the wire W by a connector press-contacting device 215 in the previous step. And the clamp chuck | zipper part 11 approaches with respect to the end of such a wire W, clamps the end of the arranged several wire W at once, and pulls out the wire W toward the drawing-out direction A of the wire W. In addition, the length of the wire W used for the wire harness 100 used as a product is set by the drawing amount at this time.

(2) Stripper unit operation process (see Fig. 15)
The stripper unit operation process is a process of moving the upper stripper unit 23 and the lower stripper unit 25 in the approaching direction. That is, the elevating means 27 is driven and the upper stripper unit 23 is moved downward while being guided in the vertical direction by the guide means 29. Further, the elevating means 31 is driven to move the lower stripper unit 25 upward while being guided in the vertical direction by the guide means 33 so as to be interlocked with the movement of the upper stripper unit 23.

(3) Cutting / holding process (see FIGS. 1 and 2)
The cutting / holding step is a step in which the upper stripper unit 23 and the lower stripper unit 25 are moved to the operating positions to simultaneously perform the cutting of the wire W, the cutting of the coating D, and the holding of the wire W. That is, the wire W is held in a predetermined state by crossing the upper cutter blade 35 and the lower cutter blade 39 while the wires W are individually held by the slit portions 45 formed in the lower cutter holder 41. Cut by length.
The upper stripper blade 47 and the lower portion of the wire W held by the pressing force of the upper pressing portion 49 and the lower pressing portion 55 at the position on the drawing direction A side of the wire W in the vicinity of the cutting position of the wire W. The stripper blade 51 acts from above and below to cut the coating D. Further, at the position on the drawing direction A side of the wire W in the vicinity of the cutting position of the coating D, the wire W is securely clamped by the clamping force of the upper wire clamping part 65 and the lower wire clamping part 69.

(4) Stripping allowance forming step (see FIGS. 3 and 4)
The stripping allowance forming step is a step of exposing the core E of the stripping allowance B portion by operating only the stripping allowance forming means 9 while maintaining the operation positions of the wire cutting means 5 and the coating cutting means 7. That is, the air cylinder 109 is driven to project only the slider, and the portion on the connecting hole 105 side of the swing arm 97 is moved in the return direction F of the wire W.
Along with this, the swing arm 97 swings by a predetermined angle around the swing fulcrum 95 and moves the engagement recess 103 side in the drawing direction A of the wire W. As the engagement recess 103 moves, the upper slider 91 and the upper wire clamping portion 65 integral with the upper slider 91 also move in the same direction via the guide roller 93 engaged with the engagement recess 103. become.

The movement of the upper wire holding portion 65 is also transmitted to the lower wire holding portion 69 through the concave / convex engaging structure formed by the engaging convex portion 79 and the engaging concave portion 81, and the lower wire holding portion 69 is a slide provided integrally. Together with the base 72, the linear guide 83 guides against the urging force of the compression coil spring 89, and moves integrally with the upper wire clamping portion 65 in the drawing direction A of the wire W.
In this state, since the distance between the upper wire holding portion 65 and the lower wire holding portion 69 and the clamp chuck portion 11 is reduced by the amount of movement of the upper wire holding portion 65 and the lower wire holding portion 69, the wire W Is somewhat bent as shown.

The amount of movement of the upper wire holding portion 65 and the lower wire holding portion 69 can be adjusted by adjusting the swing angle of the swing arm 97, and the covering between the cutting position of the wire W and the cutting position of the covering D can be adjusted. It is possible to switch between an entire strip state in which D is completely removed as covering waste G and a half strip state in which the covering D between the cutting position of the wire W and the cutting position of the covering D is shifted in the return direction F of the wire W. It has become.
Further, the wire W receives the pressing force of the upper pressing portion 49 and the lower pressing portion 55 in the coating cutting means 7 when the upper wire holding portion 65 and the lower wire holding portion 69 are moved, but the pressing force is not strong. The wire W can be slid between the upper pressing portion 49 and the lower pressing portion 55 and moved in the drawing direction A by the deformation of the compression coil spring 53 in the contraction direction.

(5) Strip completion / separation process (see FIG. 16)
In the strip completion / separation step, the wire cutting means 5, the coating cutting means 7, and the stripping allowance forming means 9 remain in the above-described stripping allowance forming step, and the clamp means 3 is bent by moving in the drawing direction A of the wire W. In this step, the stripped wire W is separated from the wire harness 100 as a product while the stripped wire W is tensioned to complete the strip.
That is, the clamp chuck portion 11 is moved in the wire W drawing direction A, and at the same time, an air suction device (not shown) is operated to allow the coating waste G separated from the product to enter the air flow path 43 and be discharged to the outside.

(6) Stripper unit origin return process (see Fig. 17)
The stripper unit origin returning step is a step of moving the upper stripper unit 23 and the lower stripper unit 25 in the separating direction. That is, the elevating means 27 is driven and the upper stripper unit 23 is moved upward while being guided in the vertical direction by the guide means 29 to return to the origin position. Further, the lifting / lowering means 31 is driven so as to be interlocked with the movement of the upper stripper unit 23, and the lower stripper unit 25 is moved downward while being guided in the vertical direction by the guide means 33, thereby returning to the origin position.

(7) Product removal and wire return process (see Fig. 18)
The product take-out / wire return step is a step in which the completed wire harness 100 is taken out as a product and the wire W is returned in the return direction F.
That is, the clamp chuck portion 11 is expanded and the product wire harness 100 is taken out. At the same time, the wire return device 213 is actuated to move the new one end of the wire W cut to the position of the connector C in the connector pressure contact device 215.

(8) Connector pressure welding process (see Fig. 19)
The connector press-contacting process is a process in which the connector C is press-attached to one end of the wire W. That is, the connector C is supplied to and covered with one end of the wire W located at the pressure contact position of the connector C, and is pressed from above and below to break a part of the coating D of the wire W, so that it becomes a contact on the connector C side. The core material E is brought into pressure contact so as to achieve electrical conduction between the wire W and the connector C.

As described above, according to the present embodiment, the following effects can be obtained. First, the length of the stripping margin B is stabilized and does not become uneven because the sheath D is not forcibly pulled, and the portion near the cutting position of the coating is sandwiched and pulled by the stripping margin of the wire. Further, the frictional force between the coating D and the core material E generated when the stripping allowance B is formed may be reduced, so that the wire W does not stretch.
Further, the wire cutting means 5, the covering cutting means 7 and the stripping allowance forming means 9 are fixed to the upper and lower upper base frames 19 and 21, and the upper and lower upper stripper units 23 and 25 are integrally approached and separated. Thus, a series of processes of cutting the wire W, cutting the coating D, and forming the stripping allowance B can be executed almost simultaneously, and the stripping allowance B can be formed in a short time.

Further, since the alignment state of the wires W is maintained by the plurality of comb-like slit portions 45 formed in the lower cutter holder 41 and the groove portions 63 formed in the pressing surface 61 of the lower pressing portion 55, the wires W and the covering D are maintained. Smooth cutting is performed.
Further, the lower pressing portion 55 is provided in a movable state imparted with a tendency to protrude by the compression coil spring 53 that is an urging means, and is engaged with both end portions in the alignment direction L of the wires W on the clamping surfaces of the upper and lower wire clamping portions 65 and 69. By providing the concave-convex engaging structure constituted by the joint convex part 79 and the engaging concave part 81, an excessive clamping force with respect to the wire W is prevented, and the wire W is prevented from being damaged or damaged, and the upper wire clamping part 65 The lower wire clamping portion 69 is securely engaged and moved integrally in the drawing direction A of the wire W, so that the stripping allowance B can be formed at the other end of the wire W.

In addition, the wire strip apparatus 1, the wire harness pressure welding machine 201, and the wire strip method of the present invention are not limited to those of the above-described embodiment, and the design can be changed within the gist of the present invention. For example, the wire strip device 1 of the present invention is not limited to the case where it is used for forming the stripping allowance B on the other end side of the wire W when manufacturing the wire harness 100 as shown in FIG. It can be used to form a stripping allowance B at one end or both ends. Accordingly, the wire strip device 1 can be used alone by being separated from the wire harness pressure welding machine 201.
In addition, the wire strip method of the present invention basically has only to include a wire drawing step, a stripper unit operation step, a cutting / holding step, a peeling allowance forming step, and a strip completion / separation step. As described above, when the wire strip device 1 is used separately from the wire harness pressure welding machine 201, the connector pressure welding process becomes unnecessary.
Further, the engaging convex portion 79 and the engaging concave portion 81 provided on the upper and lower wire holding portions 65 and 69 may be provided on either side, the engaging concave portion 81 is provided on the upper wire holding portion 65, and the lower wire Of course, it is also possible to provide the engaging convex part 79 in the clamping part 69. FIG.

  INDUSTRIAL APPLICABILITY The present invention has applicability in the field of manufacturing, using, etc., wire harnesses used as electrical components such as automobiles, or electronic devices such as personal computers, and electric wires.

It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the cutting | disconnection and holding process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view which expands and shows the wire process site | part periphery in FIG. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the peeling allowance formation process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view which expands and shows the wire process site | part periphery in FIG. It is a figure which shows embodiment of this invention, and is a sectional side view which expands and shows the principal part of the wire strip apparatus of this invention. It is a figure which shows embodiment of this invention, and is an AA arrow line view in FIG. It is a figure which shows embodiment of this invention, and is a BB arrow line view in FIG. It is a figure which shows embodiment of this invention, and is CC arrow line view in FIG. It is a figure which shows embodiment of this invention, and is DD arrow line view in FIG. It is a figure which shows embodiment of this invention, and is the EE arrow line view in FIG. It is a figure which shows embodiment of this invention and is a front view which expands and shows an upper stripper blade. It is a figure which shows embodiment of this invention, and is a front view which expands and shows a lower stripper blade. It is a figure which shows embodiment of this invention, and is an enlarged front view which shows a mode that the coating | coated of the wire is cut | disconnected by the lower stripper blade and the lower stripper blade. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the wire drawing-out process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the stripper unit operation process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the strip completion and isolation | separation process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the stripper unit origin return process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the product taking-out and wire return process which shows the wire strip apparatus and connector press-contact apparatus of this invention. It is a figure which shows embodiment of this invention, and is a sectional side view at the time of the connector pressure welding process which shows the wire strip apparatus and connector pressure welding apparatus of this invention. It is a side view which shows the wire harness in which the stripping allowance was formed with the wire strip apparatus of this invention. It is a sectional side view which shows the wire harness press-contacting machine to which the wire strip apparatus of this invention is applied. It is a figure which shows a prior art example, and is a side view which shows typically the conventional wire strip method using a major clamp unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire strip apparatus 3 Clamp means 5 Wire cutting means 7 Cover cutting means 9 Peeling margin forming means 11 Clamp chuck part 13 Linear block 15 Guide rail 16 Linear guide 17 Drive motor 19 Upper base frame 21 Lower base frame 23 Upper stripper unit 25 Lower part Stripper unit 27 Lifting means 29 Guide means 31 Lifting means 33 Guide means 35 Upper cutter blade 37 Upper cutter holder 39 Lower cutter blade 41 Lower cutter holder 43 Air flow path 45 Slit portion 47 Upper stripper blade 49 Upper pressing portion 51 Lower stripper blade 53 Compression coil spring (biasing means)
55 Lower pressing portion 57 Blade portion 59 Blade portion 61 Pressing surface 63 Groove portion 65 Upper wire clamping portion 67 Strip means 69 Lower wire clamping portion 71 Guide mechanism 72 Slide base 73 Lower slider biasing means 75 Projection 77 Projection 79 Engaging projection Part (concave engagement structure)
81 Engagement recess (concave engagement structure)
83 Linear guide 85 Guide rail 87 Slider block 89 Compression coil spring 91 Upper slider 93 Guide roller 95 Oscillation fulcrum 97 Oscillation arm 99 Oscillation drive means 100 Wire harness 101 Depression 103 Engagement recess 105 Connection hole 107 Connection pin 109 Air cylinder 111 Cylinder body 113 Bracket 115 Slider tip 201 Wire harness pressure welding machine 203 Winding drum 205 Processing line 207 Wire supply device 209 Processing site 211 Wire feeding device 213 Wire return device 215 Connector pressure welding device 217 Movable chuck device W Wire A Pull-out direction B Stripping allowance C Connector D Covering E Core material F Return direction G Covering waste H Vertical direction S Gap K Uncut part L Alignment direction

Claims (8)

Clamping means for clamping one end of the wire and pulling out the wire to a predetermined length;
Wire cutting means for cutting the wire drawn by the clamping means into a predetermined length;
A coating cutting means for cutting only the coating on the other end side of the cut wire at a predetermined position;
In a wire strip device comprising a stripping margin forming means for removing the coating on the other end side of the cut coating and exposing the core material,
The stripping allowance forming means includes a strip means for sandwiching and stripping in the vicinity of the cutting position of the coating, and a pair of upper and lower wire sandwiching portions that are transmitted integrally by the concavo-convex engagement structure when power is transmitted from the strip means. With
Further, the wire cutting means, the covering cutting means, and the stripping allowance forming means are provided in a pair of upper and lower parts, respectively, and the upper unit and the lower unit are respectively separated from each other so as to come close to and separate from each other. A wire strip device which is held by a frame. The wire cutting means is an upper cutter blade disposed on the upper side,
An upper cutter holder for holding the upper cutter blade;
A lower cutter blade disposed on the lower side;
A lower cutter holder that holds the lower cutter blade.
An air flow path is formed in the upper cutter blade and the upper cutter holder for sucking and discharging the coating waste generated by forming the stripping allowance,
2. The wire strip device according to claim 1, wherein the lower cutter holder is formed with a plurality of comb-shaped slit portions capable of individually accommodating a plurality of wires. The above-mentioned covering cutting means is arranged on the upper side, and an upper stripper blade provided with a plurality of blade portions cut out in a semicircular arc shape capable of individually cutting a plurality of wires,
An upper pressing portion provided on the side of the upper stripper blade and provided integrally with the upper stripper blade;
A lower stripper blade provided with a plurality of blade portions arranged in a semicircular arc shape that is arranged on the lower side and can individually cut a plurality of wires;
It is provided by the lower stripper blade, and is provided with a lower pressing portion arranged in a state protruding to the upper pressing portion side by the biasing means,
The wire strip according to claim 1 or 2, wherein a plurality of grooves extending in a longitudinal direction of the wire capable of individually holding a plurality of wires are formed on a pressing surface of the lower pressing portion. apparatus. The stripping allowance forming means includes an upper wire holding portion disposed on the upper side,
Strip means for moving the upper wire clamping part to one end side of the clamped wire by a predetermined stroke;
A lower wire clamping portion disposed on the lower side;
A guide mechanism for sliding the lower wire clamping portion in the longitudinal direction of the wire;
The wire strip device according to any one of claims 1 to 3, further comprising a lower slider urging unit that urges the lower wire clamping portion to move to the other end side of the wire. . The strip means includes an upper slider that slides in the longitudinal direction of the wire integrally with the upper wire clamping portion;
A guide roller provided on a side surface of the upper slider;
A swing arm that swings at a predetermined angle around a swing fulcrum and has an engagement recess formed in a semicircular arc shape that engages with the guide roller at one end;
5. The wire according to claim 4, further comprising: a swing drive means connected to the other end of the swing arm and a tip of a slider, and a main body held by the upper base frame. Strip device. A plurality of ridges extending in the wire alignment direction are formed on each clamping surface of the upper wire clamping portion and the lower wire clamping portion,
Engagement projections projecting downward are provided at both ends of the alignment direction of the wires on the lower surface of the upper wire clamping portion,
6. A wire strip device according to claim 4 or 5, wherein engagement recesses that engage with the engagement projections are provided at both ends of the upper surface of the lower wire clamping portion in the alignment direction of the wires. . A wire feeder that feeds the wire wound on the winding drum onto the processing line;
A wire feeder that transports the wire fed on the processing line toward the processing site;
A wire return device for returning the wire conveyed toward the processing site to the winding drum side;
A connector pressure welding device that presses and attaches a connector to one end of the wire;
A wire strip device for forming a stripping allowance at the other end of the wire;
In a wire harness pressure welding machine provided with a movable chuck device that clamps and pulls out one end of a wire,
A wire harness pressure welding machine, wherein the wire strip device according to any one of claims 1 to 6 is applied as the wire strip device. A wire drawing process for clamping one end of the wire and drawing the wire to a predetermined length;
An upper stripper unit having an upper wire cutting means, a covering cutting means, and a peeling allowance forming means, a lower wire cutting means, a covering cutting means, and a lower lower portion having a peeling allowance forming means. A stripper unit operation process for moving the stripper unit in the approaching direction;
A cutting and holding step for simultaneously performing cutting of the wire, cutting of the coating, and holding of the wire by moving the upper stripper unit and the lower stripper unit to the working position,
A stripping allowance forming step in which only the stripping allowance forming means is operated to expose the core material of the stripping allowance portion, while the operation positions of the wire cutting means and the covering cutting means remain unchanged.
The wire cutting means, the covering cutting means, and the stripping forming means remain in the same position, and the clamping means that clamps one end of the wire is moved in the wire drawing direction to complete the strip and is separated from the wire. A wire strip method comprising: a strip completion / separation step for sucking and discharging the coating waste.

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