Winding correction device and winding correction method

Abstract

The invention relates to a twisting correction device, which comprises an untwisting mechanism and a controller, and is characterized in that the untwisting mechanism is configured to clamp a multi-core twisted wire through a pair of clamping parts, the pair of clamping members are configured to slide toward the tail end side of the multi-core stranded wire while performing relative reciprocating position offset movement of the pair of clamping members in the untwisting direction for untwisting the multi-core stranded wire, and the pair of clamping members are configured to be relatively moved toward the tail end side of the multi-core stranded wire when the pair of clamping members are located at the tail end side. The controller is configured to perform operation control with a smaller clamping force in the twisting clamping direction, a smaller operation force for the reciprocating position offset movement, and a smaller position offset amount for the reciprocating position offset movement when the pair of clamping members is located at the exposed side end portion of the multi-core stranded wire.

Description

TECHNICAL FIELD

[0001] The present application relates to a stranding correction device and a stranding correction method for unstranding a stranded wire. BACKGROUND

[0002] In recent years, the demand for high-speed communication cables is expected to increase, and a plurality of stranded wires are included in many of these high-speed communication cables. In order to perform end processing such as terminal connection on the stranded wires, it is necessary to correct the stranding of the end of the stranded wire and unstrand it. Conventionally, a device for correcting such stranding has been proposed (see, for example, Patent Literature 1). The stranding correction device described in Patent Literature 1 is configured to unstrand the stranded wire, for example, by sliding from the root side to the end side of the stranded wire to be unstranded under pressure and / or by clamping the end of the stranded wire and then rotating the stranded wire in a direction opposite to the stranding direction of the stranded wire.

[0003] REFERENCE LIST

[0004] PATENT LITERATURE

[0005] Patent Literature 1: JP 2018-185983 A SUMMARY

[0006] In the above-described stranding correction device, during unstranding, the stranded wire tends to be subjected to a load at the root side. In the case where such a load is excessively applied to the root side, this can impose a burden on the stranded wire in terms of strength. Therefore, such a load at the root side during unstranding is undesirable.

[0007] Accordingly, the present application focuses on the above-described problem, and an object of the present application is to provide a stranding correction device and a stranding correction method that are capable of unstranding a stranded wire while suppressing a load at the root side of the stranded wire to be unstranded.

[0008] To achieve the above object, a twisted wire correction device includes: a wire holding portion configured to hold a twisted wire at a position of a terminal of the twisted wire further from a root of the twisted wire for untwisting the twisted wire than one end side of the twisted wire, the root being spaced apart from the terminal by a predetermined distance; an untwisting mechanism including a pair of clamping members configured to clamp the twisted wire between the root and the terminal of the twisted wire in a state where the twisted wire is held by the wire holding portion, wherein the pair of clamping members is configured to clamp the twisted wire in a twisting clamping direction intersecting an extension direction of the twisted wire and to slide the pair of clamping members together from the root side to the terminal side of the twisted wire while relatively reciprocatingly moving the pair of clamping members in an untwisting direction for untwisting the twisted wire, the untwisting direction intersecting both the extension direction and the twisting clamping direction; and a controller configured to perform operation control of the untwisting mechanism, wherein, when the pair of clamping members is on the root side, the controller is configured to perform the operation control to operate the pair of clamping members with a smaller clamping force in the twisting clamping direction and a smaller operation force for the reciprocatingly moving and a smaller position shift amount for the reciprocatingly moving than when the pair of clamping members is on the terminal side.

[0009] To achieve the above object, a twisted wire correction method includes: a wire holding step of holding a twisted wire at a position of a terminal of the twisted wire further from a root of the twisted wire for untwisting the twisted wire than one end side of the twisted wire, the root being spaced apart from the terminal by a predetermined distance; and an untwisting step of untwisting the twisted wire held in the wire holding step by clamping the twisted wire with a pair of clamping members in a twisting clamping direction intersecting an extension direction of the twisted wire and by sliding the pair of clamping members together from a root side to a terminal side of the twisted wire while relatively reciprocatingly moving the pair of clamping members in an untwisting direction, the untwisting direction intersecting both the extension direction and the twisting clamping direction, wherein, when the pair of clamping members is on the root side during the untwisting step, the twisted wire is untwisted with a smaller clamping force in the twisting clamping direction and a smaller operation force for the reciprocatingly moving and a smaller position shift amount for the reciprocatingly moving than when the pair of clamping members is on the terminal side.

[0010] The above twisted wire correction device and twisted wire correction method can untwist a twisted wire while suppressing a load on a root side for untwisting the twisted wire. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A perspective view of a stranding correction device according to a first embodiment is shown;

[0012] Figure 2 A perspective view of a stranding correction device according to a second embodiment is shown; Figure 1 An enlarged view of the area A11 shown;

[0013] Figure 3 A side view of a pair of clamping members of the stranding correction device according to the first embodiment is shown, as well as a multi-core stranding wire clamped by the pair of clamping members; Figure 2 A side view of a pair of clamping members of the stranding correction device according to the first embodiment is shown, as well as a multi-core stranding wire clamped by the pair of clamping members; Figure 2 A side view of a pair of clamping members of the stranding correction device according to the first embodiment is shown, as well as a multi-core stranding wire clamped by the pair of clamping members;

[0014] Figure 4 Steps S1 to S4 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown; Figures 1 to 3 Steps S1 to S4 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown;

[0015] Figure 5 Steps S5 to S8 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown; Figures 1 to 3 Steps S5 to S8 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown;

[0016] Figure 6 Steps S9 to S10 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown; and Figures 1 to 3 Steps S9 to S10 of a processing flow of a stranding wire correction method performed by the stranding correction device according to the first embodiment are shown; and

[0017] Figure 7 A perspective view of a stranding correction device according to a second embodiment is shown, the stranding correction device differing from the first embodiment in the clamping structure of the multi-core stranding wire.

[0018] List of reference signs

[0019] 1, 2 stranding correction device

[0020] 11 wire holding portion

[0021] 12 unstranding mechanism

[0022] 13 controller

[0023] 111 chuck member

[0024] 112 wire guide plate

[0025] 112a receiving groove

[0026] 121, 221 clamping member

[0027] 121a, 221a first clamping member

[0028] 121a-1, 121b-1 non-slip sheet

[0029] 121a-2, 121b-2 flat surface

[0030] 121b second clamping member

[0031] 122 first driver

[0032] 123 second driver

[0033] 124 third driver

[0034] 125 frame

[0035] 221a-1 annular anti-slip piece

[0036] 221a-2 peripheral surface

[0037] D11 vertical direction

[0038] D12 receiving direction

[0039] D13 wire chucking direction

[0040] D14 extending direction

[0041] D15 twisting clamping direction

[0042] D16 untwisting direction

[0043] D17 chucking direction

[0044] D18 twisting direction

[0045] D19 first tilting direction

[0046] D20 second tilting direction

[0047] D21 rotating direction

[0048] D151 lifting direction

[0049] D161 first untwisting direction

[0050] D162 second untwisting direction

[0051] L11 clamping width

[0052] L12 sheet width

[0053] M1 conveying jig

[0054] P11 twisting pitch

[0055] W1 multi-core cable

[0056] W11 multi-core twisted wire

[0057] W12 outermost covering

[0058] W121 exposed side end portion

[0059] X21 rotation axis DETAILED DESCRIPTION

[0060] Hereinafter, embodiments of the stranding correction device and the stranding correction method will be described. First, a first embodiment will be described.

[0061] Figure 1 A perspective view of the stranding correction device according to the first embodiment is shown, and Figure 2 A perspective view of the stranding correction device according to the first embodiment is shown, and Figure 1 An enlarged view of the area A11 shown.

[0062] The stranding correction device 1 according to the present embodiment is configured to receive a multi-core cable W1 including a multi-core (in the present embodiment, a double-core) stranding wire W11, and to correct stranding of the multi-core stranding wire W11 for end processing to unstranding thereof, wherein the multi-core stranding wire W11 is exposed at an end portion. The stranding correction device 1 is installed at a predetermined installation position, and includes an electric wire holding portion 11, an unstranding mechanism 12, and a controller 13.

[0063] The electric wire holding portion 11 is configured to hold the multi-core cable W1 at an exposed side end portion W121 of the outermost covering W12 facing the exposed portion of the multi-core stranding wire W11 in a state where the multi-core stranding wire W11 is exposed from the outermost covering W12 on one end side. The exposed side end portion W121 of the outermost covering W12 is located at a position further from an end of the stranding wire W11 on the one end side than a root of the stranding wire W11 for unstranding, which is spaced apart from the end by a predetermined distance. The electric wire holding portion 11 includes a pair of chuck members 111 and an electric wire guide plate 112. The pair of chuck members 111 is configured to grip the multi-core cable W1 in an electric wire gripping direction D13 intersecting both a vertical direction D11 defined with respect to the stranding correction device 1 in the installed state and a receiving direction D12 for receiving the multi-core cable W1. The electric wire guide plate 112 is a plate member located on the rear side of the receiving direction D12 of the pair of chuck members 111, wherein the electric wire guide plate 112 extends intersecting the receiving direction D12. Further, the electric wire guide plate 112 has a receiving groove 112a for the multi-core cable W1 formed downward from an upper end edge of the electric wire guide plate 112 in the vertical direction D11. The multi-core cable W1 is inserted through the receiving groove 112a to be introduced between the pair of chuck members 111 and then gripped by the pair of chuck members 111 at the exposed side end portion W121 of the outermost covering W12.

[0064] The unspooling mechanism 12 is located on the front side in the receiving direction D12 of the wire holding portion 11. The unspooling mechanism 12 is a mechanism member configured to unspool the multi-core twisted wire W11 of the multi-core cable W1 held by the wire holding portion 11. The unspooling mechanism 12 includes a pair of clamping members 121. The pair of clamping members 121 includes a first clamping member 121a and a second clamping member 121b, and is configured to clamp the multi-core twisted wire W11 of the multi-core cable W1 to place the multi-core twisted wire W11 between the first clamping member 121a and the second clamping member 121b. The unspooling mechanism 12 is configured to cause the pair of clamping members 121 to clamp the multi-core twisted wire W11 in a direction intersecting an extension direction D14 in which the multi-core twisted wire W11 extends from the exposed side end portion W121 of the outermost covering W12. Further, the pair of clamping members 121 clamps the multi-core twisted wire W11 between a root to be unspooled of the multi-core twisted wire W11 and a terminal end, where the root is located near the exposed side end portion W121 of the outermost covering W12. According to the present embodiment, the extension direction D14 of the multi-core twisted wire W11 of the multi-core cable W1 held by the wire holding portion 11 is substantially in line with the receiving direction D12 of the twisting correction device 1 for the multi-core cable W1. Further, the pair of clamping members 121 is configured to clamp the multi-core twisted wire W11 in a direction substantially in line with the vertical direction D11 of the twisting correction device 1. The first clamping member 121a is located on the upper side in the vertical direction D11, and the second clamping member 121b is located on the lower side in the vertical direction D11.

[0065] With the multi-core twisted wire W11 clamped by the pair of clamping members 121, the unspooling mechanism 12 is configured to cause the pair of clamping members 121 to relatively reciprocatingly shift in position in an unspooling direction D16 for unspooling the twisted wire, which intersects both the extension direction D14 and the clamping direction (the vertical direction D11). In addition to the reciprocatingly shifting in position, the unspooling mechanism 12 is configured to unspool the multi-core twisted wire W11 by sliding the pair of clamping members 121 together from the root side to be unspooled to the terminal end side. For such various operations, in addition to the pair of clamping members 121, the unspooling mechanism 12 includes a first driver 122, a second driver 123, and a third driver 124.

[0066] The first driver 122 is a driving source configured to drive at least one of the pair of clamping members 121 and capable of changing a driving force for driving the at least one clamping member. According to the present embodiment, the pair of clamping members 121 is configured to clamp the multi-core twisted wire W11 by moving only the upper first clamping member 121a in the twisting clamping direction D15 toward the lower second clamping member 121b. The first driver 122 is configured to drive the first clamping member 121a.

[0067] The second driver 123 is a driving source configured to drive at least one of the pair of gripping members 121 and capable of changing a driving force and a driving amount for driving the at least one gripping member. According to the present embodiment, the pair of gripping members 121 is configured to perform the reciprocating position shift movement by moving the lower-side second gripping member 121b in the unstranding direction D16 only. The second driver 123 is configured to drive the second gripping member 121b.

[0068] The third driver 124 is a driving source configured to drive both of the pair of gripping members 121 together in the extension direction D14 in a state where the two gripping members are combined. According to the present embodiment, the unstranding mechanism 12 is configured such that the pair of gripping members 121, the first driver 122, and the second driver 123 are mounted to one frame 125. The third driver 124 is configured to drive both of the pair of gripping members 121 together by moving the frame 125 forward and backward in the extension direction D14.

[0069] The controller 13 is a member configured to perform operation control of the unstranding mechanism 12. When the pair of gripping members 121 is located at the root side to be unstranded, the controller 13 performs operation control of the unstranding mechanism 12 so as to operate the pair of gripping members 121 with a smaller gripping force in the stranding gripping direction D15 and a smaller operation force and a smaller position shift amount for the reciprocating position shift movement than when the pair of gripping members 121 is located at the terminal side. Further, the controller 13 performs such operation control by controlling the first driver 122, the second driver 123, and the third driver 124.

[0070] Hereinafter, the unstranding mechanism 12 will be described in more detail with reference to the drawings. Figure 3 The pair of gripping members 121 in the unstranding mechanism 12 will be described in more detail.

[0071] Figure 3 A side view of the pair of gripping members in the unstranding mechanism 12 is shown as viewed in the direction of the arrow V11. Figure 2 A side view of the pair of gripping members in the unstranding mechanism 12 is shown as viewed in the direction of the arrow V11. Figure 2 A side view of the pair of gripping members in the unstranding mechanism 12 is shown as viewed in the direction of the arrow V11.

[0072] A side view of the pair of gripping members in the unstranding mechanism 12 is shown as viewed in the direction of the arrow V11. Figure 2 and Figure 3As shown, each of the pair of clamping members 121 includes one or more flat surfaces 121a-2, 121b-2 facing the other of the pair of clamping members 121, each of the flat surfaces 121a-2, 121b-2 having one or more non-slip pieces 121a-1, 121b-1 laid thereon. As examples of the non-slip pieces 121a-1, 121b-1, pieces made of polyurethane, for example, can be used. The pair of clamping members 121 clamps the multi-core stranded wire W11 between the pair of flat surfaces 121a-2, 121b-2 via the non-slip pieces 121a-1, 121b-1. In this case, only one row of the flat surfaces 121a-2 having the non-slip pieces 121a-1 laid thereon is provided on the upper side first clamping member 121a to extend in a band shape in the unstranding direction D16. On the other hand, a plurality of rows (two rows in this embodiment) of the flat surfaces 121b-2 having the non-slip pieces 121b-1 laid thereon are provided on the lower side second clamping member 121b to extend in a band shape narrower than the first clamping member 121a in the unstranding direction D16 and arranged in the extending direction D14. At the time of unstranding, the flat surface 121b-2 having one non-slip piece 121b-1 is selected from among the plurality of rows of the flat surfaces 121b-2 having the non-slip pieces 121b-1 laid thereon on the second clamping member 121b to be set as the flat surface for wire clamping. Then, the multi-core stranded wire W11 is clamped by the flat surface 121a-2 of the first clamping member 121a having the non-slip piece 121a-1 and the flat surface 121b-2 of the second clamping member 121b having one non-slip piece 121b-1 set as the flat surface for wire clamping. In this case, the flat surface for wire clamping is selected from among the flat surfaces 121a-2, 121b-2 by the maintenance operator from the non-slip pieces 121b-1 on the front side in the extending direction D14, for example, according to the degree of wear of the non-slip pieces 121b-1. Then, the position of the first clamping member 121a is adjusted so that the other flat surface 121a-2 is positioned to face the selected flat surface 121b-2, thereby setting the flat surface 121b-2 having the non-slip piece 121b-1 as the flat surface for wire clamping.

[0073] Further, as Figure 3 shown, the clamping width L11 for clamping the multi-core stranded wire W11 by the pair of flat surfaces 121a-2, 121b-2 extends in the extending direction D14 is smaller than or equal to the stranding pitch P11 of the multi-core stranded wire W11. Further, the non-slip pieces 121b-1 on each of the flat surfaces 121b-2 of at least one of the pair of clamping members 121, more specifically, the lower side second clamping member 121b, are laid in a band shape in the unstranding direction D16 with a piece width L12 corresponding to the clamping width L11.

[0074] Next, the twisted wire straightening method performed in the twisted wire straightening device 1 under the control of the controller 13 will be described together with the detailed control processing in the controller 13 as described above.

[0075] Figure 4 Steps S1 to S4 of the processing flow of the twisted wire straightening method performed by the twisted wire straightening device according to Figures 1 to 3 Figure 5 Steps S5 to S8 of the processing flow of the twisted wire straightening method performed by the twisted wire straightening device according to Figures 1 to 3 Figure 6 Steps S9 to S10 of the processing flow of the twisted wire straightening method performed by the twisted wire straightening device according to Figures 1 to 3 Figures 4 to 6 It should be noted that, although Figures 4 to 6 the components identified by the reference numerals in Figures 1 to 3 are referred to in the following description, reference is also made to the components shown in

[0076] In step S1 of Figure 4 , the multi-core cable W1 that has been carried toward the receiving direction D12 of the twisted wire straightening device 1 by a carrying jig M1 outside the device is inserted to a clamping position, which is a position at which the multi-core cable W1 is to be clamped by the pair of chuck members 111 of the wire holding section 11. In this step S1, the wire holding section 11 has been withdrawn downward, and the pair of chuck members 111 is in an open state. In the next step S2, the wire holding section 11 is moved upward, and the pair of chuck members 111 is closed in the chuck direction D17, so that the multi-core cable W1 is held at a position further from the terminal end than the root to be straightened. As described above, the clamping position during this period is at the exposed side end portion W121 of the outermost covering W12. This step S2 corresponds to a wire holding step in which the twisted wire W11 is held at a position further from the terminal end of the twisted wire W11 than the root of the twisted wire W11 to be straightened, which is spaced apart from the terminal end by a predetermined distance (the exposed side end portion W121 of the outermost covering W12).

[0077] In step S3, the upper first clamping member 121a of the pair of clamping members 121 is moved downward in the twisting clamping direction D15 toward the lower second clamping member 121b. When the multi-core twisted wire W11 is placed on the second clamping member 121b, the multi-core twisted wire W11 is clamped in the twisting clamping direction D15 along the vertical direction D11 due to the downward movement of the first clamping member 121a.

[0078] ​​​In the next step S4, before the unstranding of the multi-core stranded wire W11 in step S5 and the subsequent steps, the controller 13 performs the following operation control: under this operation control, the pair of clamping members 121 are caused to slide together by a predetermined distance toward the end-side in the extension direction D14 of the multi-core stranded wire W11. This sliding pulls the multi-core stranded wire W11 in the extension direction D14 with the multi-core stranded wire W11 still being clamped by the pair of clamping members 121, thereby applying a tension to the multi-core stranded wire W11 that acts in the extension direction D14. The multi-core stranded wire W11 is straightened in the extension direction D14 by the application of the tension, and in this state, the unstranding process of step S5 and the subsequent steps is performed on the multi-core stranded wire W11.

[0079] Step S5 is a first position offset movement on the root side for unstranding, in the reciprocal position offset movement of the pair of clamping members 121 that is performed subsequently, where the root side is closest to the exposed side end portion W121 of the multi-core cable W1. During this first position offset movement of step S5, the lower second clamping member 121b of the pair of clamping members 121 is moved in a first unstranding direction D161, i.e., toward one side in the unstranding direction D16. The first unstranding direction D161 during the first position offset movement is a direction of movement that corresponds to the stranding direction D18 of the multi-core stranded wire W11. In the illustrated example, the stranding direction D18 is a clockwise twisting direction with respect to the outermost covering W12 of the multi-core cable W1. Thus, the first unstranding direction D161 extends to the left. As a result of this movement, the second clamping member 121b is offset in position relative to the first clamping member 121a in the first unstranding direction D161 with the multi-core stranded wire W11 still being clamped between the second clamping member 121b and the first clamping member 121a. In addition, this position offset causes the multi-core stranded wire W11 to be twisted in the direction opposite the stranding direction D18 in the clamped position clamped by the pair of clamping members 121, thereby causing unstranding to occur.

[0080] In step S6, the pair of clamping members 121 are caused to slide together by a predetermined distance toward the end-side in the extension direction D14 of the multi-core stranded wire W11 while the second clamping member 121b is moved in a second unstranding direction (here, the direction to the right) opposite the first unstranding direction D161. As a result of this movement, the second clamping member 121b is moved obliquely in a first oblique direction D19 (here, the right oblique direction) toward the end-side in the extension direction D14 relative to the multi-core stranded wire W11. Through the oblique movement of the second clamping member 121b described above, the multi-core stranded wire W11 is further unstranded toward the end-side in the extension direction D14.

[0081] In the next step S7, the second gripping member 121b is moved in the first untwisting direction D161 while the pair of gripping members 121 is slid toward the end side in the extension direction D14. Due to this movement, the second gripping member 121b is moved obliquely in the second oblique direction D20 (here, the left oblique direction) with respect to the multi-stranded wire W11. By the oblique movement of the second gripping member 121b described above, the multi-stranded wire W11 is further untwisted toward the end side in the extension direction D14.

[0082] In step S8, the second gripping member 121b is alternately repeatedly moved in the first untwisting direction D161 and in the second untwisting direction D162, that is, relatively reciprocatingly displaced, while being slid to the end of the multi-stranded wire W11. Due to this movement, the second gripping member 121b is alternately obliquely moved in the first oblique direction D19 and in the second oblique direction D20 with respect to the multi-stranded wire W11 so that the second gripping member 121b is moved to the end of the multi-stranded wire W11 in a zigzag manner. By the zigzag movement described above, the multi-stranded wire W11 is further untwisted to the end in the extension direction D14.

[0083] The processes of steps S5 to S8 are untwisting steps of the multi-stranded wire W11 by the untwisting mechanism 12. Here, in this untwisting process, as described above, under the control of the controller 13, the reciprocatingly displacing movement of the pair of gripping members 121, more specifically, the lower second gripping member 121b is moved with a smaller gripping force in the twisting gripping direction D15 and a smaller driving force and a smaller amount of movement applied to the second gripping member 121b in steps S5 and S6 in which the pair of gripping members 121 is positioned on the exposed side end portion W121 side than in steps S7 and S8 in which the pair of gripping members 121 is positioned on the end side. This results in a smaller operation force and a smaller displacement amount in the reciprocatingly displacing movement of the pair of gripping members 121, so that during the untwisting, the load applied to the root side of the multi-stranded wire W11 is suppressed.

[0084] In step S9, which starts after the untwisting of the multi-stranded wire W11 is advanced to the end, the upper first gripping member 121a of the pair of gripping members 121 is moved away from the lower second gripping member 121b and is lifted in the lifting direction D151 opposite to the twisting gripping direction D15. By lifting the first gripping member 121a, the gripping of the multi-stranded wire W11 in the twisting gripping direction D15 is released.

[0085] In a subsequent step S10, the pair of chuck members 111 of the electric wire holding portion 11 is opened and moved downward to a withdrawn position to release the holding of the multi-core cable W1, and then the multi-core cable W1 is removed. By this step S10, the series of processes of the twisted wire correction method by the twisted wire correction device 1 ends.

[0086] In the above-described twisted correction device 1 and twisted correction method according to the first embodiment, the multi-core twisted wire W11 is untwisted by the relative reciprocating position offset movement of the pair of clamping members 121 clamping the multi-core twisted wire W11 and by sliding the pair of clamping members 121 toward the end side in the extension direction D14. During this untwisting, the operation control of the controller 13 causes the clamping force on the multi-core twisted wire W11 and the operation force in the reciprocating position offset movement and the position offset amount in the reciprocating position offset movement to be smaller when the pair of clamping members 121 is located at the root side for untwisting than when the pair of clamping members 121 is located at the end side. At the root side of the multi-core twisted wire W11 to be used for untwisting, this operation control results in the load applied to the multi-core twisted wire W11 being suppressed during untwisting. In other words, this embodiment is able to untwist the multi-core twisted wire W11 while suppressing the load on the root side of the multi-core twisted wire W11 for untwisting.

[0087] According to this embodiment, the untwisting mechanism 12 includes a first driver 122, a second driver 123, and a third driver 124. The first driver 122 drives the upper first clamping member 121a in the twisting and clamping direction D15, and the second driver 123 drives the lower second clamping member 121b in the untwisting direction D16. Further, the third driver 124 drives the pair of clamping members 121 together to slide them in the extension direction D14 of the multi-core twisted wire W11. Further, the controller 13 controls the first driver 122, the second driver 123, and the third driver 124. In this configuration, the first to third drivers 122 to 124 driven in the twisting and clamping direction D15, the untwisting direction D16, and the extension direction D14 are controlled by the controller 13, respectively. With this separate control of the drivers, it is possible to effectively operate the pair of clamping members 121 in these respective directions for untwisting.

[0088] According to the present embodiment, the multi-core twisted wire W11 is clamped by moving only the upper first clamping member 121a in the twisting clamping direction D15, in which the reciprocating position shift movement is performed by moving only the lower second clamping member 121b in the untwisting direction D16. In this configuration, two different clamping members are provided to move in different directions D15 and D16, i.e., the first clamping member 121a moving in the twisting clamping direction D15 and the second clamping member 121b moving in the untwisting direction D16, which simplifies the structure of the untwisting mechanism 12. The simplicity of this structure allows to improve the assemblability of the device and / or the maintainability of the device after completion, which can reduce the assembly cost of the device and / or the maintenance cost of the device.

[0089] Further, in the present embodiment, the controller 13 performs operation control such that the primary position shift movement in the reciprocating position shift movement causes the lower second clamping member 121b to move in a movement direction corresponding to the twisting direction D18 of the multi-core twisted wire W11. In this configuration, the multi-core twisted wire W11 is twisted in the direction opposite to the twisting direction D18 by the primary position shift movement causing the clamping member 121 to move in the movement direction corresponding to the twisting direction D18, which facilitates untwisting of the multi-core twisted wire W11.

[0090] Further, according to the present embodiment, before untwisting the multi-core twisted wire W11, the controller 13 performs operation control to apply tension to the multi-core twisted wire W11 by sliding the pair of clamping members 121 toward the end side in the extension direction D14, the tension acting in the extension direction D14. In this configuration, the multi-core twisted wire W11 is untwisted in a state of being pulled straight in the extension direction D14, which facilitates untwisting of the multi-core twisted wire W11.

[0091] Further, according to the present embodiment, the pair of clamping members 121 clamps the multi-core twisted wire W11 between a pair of flat surfaces 121a-2 and 121b-2 facing each other via the anti-slip sheets 121a-1 and 121b-1. This configuration enables to effectively move each electric wire by friction with the anti-slip sheets 121a-1 and 121b-1 and thus to loosen the multi-core twisted wire W11, thereby untwisting the multi-core twisted wire W11.

[0092] Furthermore, according to this embodiment, the clamping width L11 for clamping the stranded wire W11 by a pair of flat surfaces 121a-2 and 121b-2 is less than or equal to the stranding pitch P11 of the stranded wire W11. Additionally, the anti-slip sheets 121a-1 and 121b-1 are laid in a strip with a sheet width L12 corresponding to the clamping width L11. In this configuration, by applying force to the multi-core stranded wire W11 within a clamping width L11 that facilitates untangling, the multi-core stranded wire W11 can be effectively untangled.

[0093] Furthermore, according to this embodiment, only one row of flat surfaces 121a-2 with anti-slip pads 121a-1 is provided on the first clamping member 121a of the pair of clamping members 121. Additionally, multiple rows (two rows) of flat surfaces 121b-2 with anti-slip pads 121b-1 are provided on the second clamping member 121b. During unwinding, the multi-core stranded wire W11 is clamped between the flat surface 121a-2 with anti-slip pads 121a-1 on the first clamping member 121a and a selected flat surface 121b-2 with one anti-slip pad 121b-1 on the second clamping member 121b. This configuration allows for unwinding while appropriately changing the flat surface 121b-2 with anti-slip pads 121b-1 on the second clamping member 121b for clamping the multi-core stranded wire W11, wherein the flat surface 121b-2 is changed according to the degree of wear of the anti-slip pads 121b-1.

[0094] The description of the first embodiment concludes here, and the second embodiment will be described below. The second embodiment differs from the first embodiment in the features used for clamping the multi-core stranded wire W11. On the other hand, the overview of the apparatus and the stranding correction method performed in the apparatus are the same as or similar to those of the first embodiment. The following description focuses on the differences between the second embodiment and the first embodiment, wherein descriptions of the apparatus overview and / or stranding correction methods that are the same as or similar to those of the first embodiment will be omitted.

[0095] Figure 7 A perspective view of a stranding straightening device according to a second embodiment is shown, which differs from the first embodiment in that it has a clamping structure for the multi-core stranded wire. Figure 7 In, with Figures 1 to 6 The same or similar components shown in the first embodiment are used with Figures 1 to 6 The same reference numerals are used in the accompanying drawings, where repeated descriptions of these parts will be omitted. It should be noted that... Figure 7 The stranding correction device 2 is shown, wherein the receiving direction D12 of the multi-core cable W1 of the stranding correction device 2 is... Figure 1 and / or Figure 2 The receiving directions are opposite in the left-right direction. That is, Figure 7A pair of clamping members 221 of the unspooling mechanism 22 on the right side is shown.

[0096] Like the first embodiment, the twisting correction device 2 according to the present embodiment is configured such that the lower portion of the pair of clamping members 221 includes a second clamping member 121b having a plurality of (two) flat surfaces 121b-2 on which anti-slip pieces 121b-1 are laid. On the other hand, the upper side first clamping member 221a of the pair of clamping members 221 is configured as a roller member rotatable about a rotation axis X21 extending perpendicular to the unspooling direction D16, and includes an annular anti-slip piece 221a-1 laid on a peripheral surface 221a-2 of the roller member. The pair of clamping members 221 clamps the multi-core twisted wire W11 by the peripheral surface 221a-2 of the roller member as the first clamping member 221a and the flat surfaces 121b-2 of the second clamping member 121b on which the annular anti-slip piece 221a-1 is laid and the anti-slip pieces 121b-1 are attached. Further, during the reciprocating positional offset movement for unspooling, i.e., during the reciprocating movement of the first clamping member 221a in the unspooling direction D16, the roller member as the first clamping member 221a rolls on the flat surfaces 121b-2 while turning in the rotation direction D21 about the rotation axis X21.

[0097] Of course, like the first embodiment, the second embodiment described above is capable of unspooling while suppressing the load on the exposed root side of the multi-core twisted wire W11.

[0098] Further, according to the present embodiment, the upper side first clamping member 221a is configured as a roller member on the peripheral surface 221a-2 of which the annular anti-slip piece 221a-1 is laid, which rolls on the lower side second clamping member 121b during the reciprocating positional offset movement. In this configuration, the contact of the first clamping member 221a as the roller member with the second clamping member 121b provides the rolling contact of the annular anti-slip piece 221a-1 of the first clamping member 221a with the anti-slip pieces 121b-1 of the second clamping member 121b. This rolling contact is capable of suppressing the friction between the two members, and thus, the wear of the respective anti-slip pieces.

[0099] It should be noted that the above-described first and second embodiments merely show representative forms of the twisting correction device and the twisting correction method. The twisting correction device and the twisting correction method are not limited to the above-described embodiments, but can be implemented in various modifications.

[0100] As an example of the stranding correction device, the above-described first and second embodiments show by way of example stranding correction devices 1, 2 which comprise a pair of clamping members 121, 221 arranged side by side in a vertical direction D11. In such stranding correction devices 1, 2, the multi-core stranded wire W11 is clamped in a stranding clamping direction D15 extending along the vertical direction D11. However, the stranding correction device is not limited thereto, but a pair of clamping members can for example be arranged adjacent to each other in a horizontal direction, wherein the pair of clamping members is configured to clamp the multi-core stranded wire for example in a stranding clamping direction extending along the horizontal direction. Depending for example on the occasion in which the device is used, by installing the stranding correction device, the direction in which the pair of clamping members should be arranged can be appropriately selected.

[0101] As an example of the stranding correction device, the above-described first and second embodiments show by way of example stranding correction devices 1, 2 which comprise a multi-core cable W1 as an object to be corrected by the stranding correction devices 1, 2, the multi-core cable W1 comprising a multi-core stranded wire W11 covered by an outermost covering W12, wherein the multi-core stranded wire W11 comprises two electric wires stranded together. However, the stranding correction device is not limited thereto, but the stranded wire to be corrected by the stranding correction device can be a simple stranded wire without for example any covering. Further, any specific number of electric wires can be used to form the stranded wire.

[0102] As an example of the unstranding mechanism, the above-described first and second embodiments show by way of example unstranding mechanisms 12, 22 which comprise a first driver 122, a second driver 123 and a third driver 124, wherein the drivers 122 to 124 are controlled by the controller 13, respectively. In this example, the first driver 122 drives only the first clamping member 121a, 221a, the second driver 123 drives only the second clamping member 121b, and the third driver 124 drives the pair of clamping members 121 together. However, the unstranding mechanism is not limited thereto, but any driving configuration and / or control configuration can be used for the unstranding mechanism. However, as described above, the driving configuration and / or control configuration wherein the first to third drivers 122 to 124 are controlled by the controller 13, respectively, can effectively perform the unstranding operation in each direction by the pair of clamping members 121.

[0103] As an example of the unsplicing mechanism, the above-described first and second embodiments also exemplify the unsplicing mechanisms 12, 22 in which only the first clamping member 121a is moved in the splicing clamping direction D15 to clamp the multi-core spliced wire W11. The unsplicing mechanisms 12, 22 are also configured to perform the reciprocating position offset movement by moving only the second clamping member 121b in the unsplicing direction D16. However, the unsplicing mechanisms are not limited thereto, and the same member of the pair of clamping members can be moved in both the splicing clamping direction and the unsplicing direction. However, as described above, by providing two different clamping members for movement in different directions D15 and D16, i.e., the first clamping member 121a moved in the splicing clamping direction D15 and the second clamping member 121b moved in the unsplicing direction D16, it is possible to reduce the assembly cost of the device and / or the maintenance cost of the device.

[0104] As an example of the controller, the above-described first and second embodiments also exemplify the controller 13 configured to perform operation control in such a manner that the initial position offset movement causes the second clamping member 121b to move in a movement direction corresponding to the splicing direction D18 of the multi-core spliced wire W11. However, the controller is not limited thereto, but can perform the initial position offset movement to move the clamping member in a movement direction independent of the splicing direction. However, as described above, controlling the clamping member to move in the movement direction corresponding to the splicing direction D18 in the initial position offset movement can facilitate the unsplicing of the multi-core spliced wire W11.

[0105] As an example of the controller, the above-described first and second embodiments also exemplify the controller 13 configured to perform operation control to slide the pair of clamping members 121, 221 to apply tension to the multi-core spliced wire W11 before unsplicing. However, the controller is not limited thereto, and the controller can be configured to perform the unsplicing process of the multi-core spliced wire without applying any such tension. However, as described above, by applying the tension before unsplicing, it is possible to facilitate the unsplicing process of the multi-core spliced wire W11.

[0106] The first embodiment described above also illustrates, by way of example, a pair of holding members 121 configured to hold the multi-core stranded wire W11 between a pair of flat surfaces 121a-2 and 121b-2 facing each other via the non-slip sheets 121a-1 and 121b-1 as an example of a pair of holding members. However, the pair of holding members is not limited thereto, but can be configured to hold the multi-core stranded wire, for example, by flat surfaces and curved surfaces as illustrated by way of example in the second embodiment. Furthermore, the pair of holding members is not limited to those in which the non-slip sheets are attached to the surfaces for holding, but can be configured to hold the multi-core stranded wire, for example, by one or more untreated surfaces. Furthermore, when the non-slip treatment is performed, it is not limited to attaching a sheet member such as a urethane sheet, but a resin material having a non-slip effect can be applied, for example. However, each wire of the multi-core stranded wire W11 can be effectively moved to loosen the multi-core stranded wire W11 by holding it with the flat surfaces 121a-2 and 121b-2 to which the non-slip sheets 121a-1 and 121b-1 are attached, thereby performing the unstranding treatment.

[0107] The first embodiment described above also illustrates, by way of example, a pair of holding members 121 having a holding width L11 for holding the stranded wire W11 by a pair of flat surfaces 121a-2 and 121b-2, in which the holding width L11 is less than or equal to the strand pitch P11 as an example of a pair of holding members. Furthermore, for the pair of holding members 121, a sheet width L12 of the non-slip sheets 121a-1 and 121b-1 corresponds to the holding width L11. However, the pair of holding members is not limited thereto, but a non-slip sheet of an arbitrary sheet width can be selected for an arbitrary holding width. However, as described above, the holding width L11 and / or the sheet width L12 of less than or equal to the strand pitch P11 can achieve effective unstranding of the multi-core stranded wire W11.

[0108] The first embodiment and the second embodiment described above also illustrate, by way of example, a pair of holding members 121, 221 including a second holding member 121a in which a plurality of rows (two rows) of flat surfaces 121b-2 on which the non-slip sheets 121b-1 are laid are arranged as an example of a pair of holding members. However, the pair of holding members is not limited thereto, but similarly, only one row of flat surfaces with non-slip sheets can be provided on the second holding member. However, the plurality of rows (two rows) of flat surfaces 121b-2 on which the non-slip sheets 121b-1 are laid can be appropriately changed for holding depending on the degree of wear of the non-slip sheets 121b-1.

[0109] As an example of a pair of gripping members, the above-described second embodiment further illustrates, by way of example, a pair of gripping members 221 including a first gripping member 221a configured as a roller member having a ring-shaped non-slip sheet 221a-1, wherein the roller member rolls on the second gripping member 121 during the reciprocating positional offset movement. However, the pair of gripping members is not limited thereto, but, as illustrated by way of example in the first embodiment, can be one having flat surfaces 121b-2 and 121b-2 on which non-slip sheets 121a-1 and 121b-1 are laid. For the pair of gripping members, any specific member and / or geometry capable of gripping the multi-core stranded wire can be selected regardless of whether or not a non-slip sheet is used. However, by using the first gripping member 221a in the form of a roller member in which the roller member is capable of rolling on the second gripping member 121, wear of each non-slip sheet can be suppressed.

Claims

1. A stranded wire straightening device, the stranded wire straightening device comprising: A wire holding part is configured to hold the stranded wire at a position further away from the end of one end of the stranded wire than the root for unwinding the stranded wire, the root being spaced a predetermined distance from the end. A detanglement mechanism comprising a pair of clamping members configured to clamp the stranded wire between its root and its end while the stranded wire is held by the wire holding portion. The pair of clamping components are configured as follows: The stranded wire is clamped in a stranding clamping direction intersecting with the extension direction of the stranded wire; and While the pair of clamping members are reciprocatingly offset in the unwinding direction for unwinding the stranded wire, they slide from the root side to the end side of the stranded wire, the unwinding direction intersecting both the extending direction and the stranding clamping direction; and A controller configured to perform operational control of the unwinding mechanism. Specifically, when the pair of clamping components are located at the root side, compared to when the pair of clamping components are located at the end side, the controller is configured to perform the operation control to operate the pair of clamping components with a smaller clamping force in the twisting clamping direction, a smaller operating force for the reciprocating position offset movement, and a smaller position offset for the reciprocating position offset movement.

2. The stranded wire straightening device according to claim 1, in, In addition to the pair of clamping components, the untangling mechanism also includes: A first driver is configured to drive at least one of the pair of clamping members in the twisting clamping direction, the first driver being capable of changing the driving force used to drive the at least one clamping member; A second actuator, configured to drive at least one of the pair of clamping members in the unwinding direction, the second actuator being capable of changing the driving force and driving amount for driving the at least one clamping member; and A third actuator is configured to drive the two clamping members of the pair of clamping members together in the extending direction while the two clamping members of the pair of clamping members are engaged. The controller is configured to control the first driver, the second driver, and the third driver as the operation control.

3. The stranded wire straightening device according to claim 1, in, The pair of clamping components are configured as follows: The stranded wire is clamped by moving only the first clamping member of the pair of clamping members toward the second clamping member of the pair of clamping members in the stranding clamping direction; and The reciprocating position offset movement is performed by moving the second clamping member only in the unwinding direction.

4. The stranded wire straightening device according to claim 1, in, The controller is configured to perform the operation control in such a way that the initial position offset movement on the root side during the reciprocating position offset movement causes at least one of the pair of clamping members to move in a movement direction corresponding to the twisting direction of the stranded wire.

5. The stranded wire straightening device according to claim 1, in, The controller is configured to perform the operation control before unwinding the stranded wire to apply tension to the stranded wire by sliding the pair of clamping members together toward the end side a predetermined distance, the tension acting in the extension direction.

6. The stranded wire straightening device according to claim 1, in, Each of the pair of clamping components includes a flat surface facing the other of the pair of clamping components, and anti-slip pads are laid on each of the flat surfaces, and The pair of clamping members are configured to clamp the stranded wire between a pair of flat surfaces of the pair of clamping members via anti-slip pads.

7. The stranded wire straightening device according to claim 6, in, The clamping width of the pair of flat surfaces for clamping the stranded wire is less than or equal to the stranding pitch of the stranded wire, and the clamping width extends in the extending direction. Wherein, the anti-slip sheet on at least one of the pair of flat surfaces is laid in a strip shape in the unwinding direction, the sheet width corresponding to the clamping width.

8. The stranded wire straightening device according to claim 6, in, The pair of clamping members are configured such that: the first clamping member of the pair of clamping members has only one row of flat surfaces covered with the anti-slip pads, extending in a strip-like manner in the unwinding direction; while the second clamping member of the pair of clamping members has multiple rows of flat surfaces covered with the anti-slip pads, extending in a strip-like manner in the unwinding direction and arranged in the extending direction. During the untwisting process, the pair of clamping members are configured to clamp the stranded wire via the flat surface of the first clamping member having the anti-slip pad and the flat surface of the second clamping member having one anti-slip pad selected from the multiple rows of flat surfaces with anti-slip pads.

9. The stranded wire straightening device according to claim 1, in, The first clamping member of the pair of clamping members is configured as a roller member capable of rotating about a rotation axis, and includes an annular anti-slip sheet laid on the circumferential surface of the roller member, the rotation axis extending perpendicular to the unwinding direction. The second clamping component of the pair of clamping components has a flat surface covered with an anti-slip pad. The pair of clamping members are configured to clamp the stranded wire via the circumferential surface of the roller member (which is the first clamping member) having an annular anti-slip sheet laid on its circumferential surface, and via the flat surface of the second clamping member (which has the anti-slip sheet laid on its circumferential surface). During the reciprocating position offset movement, the roller component is configured to roll on the flat surface while rotating about the rotation axis.

10. A method for straightening stranded wires, the method comprising: The wire holding step involves holding the stranded wire at a position further away from the end of the stranded wire than the root from which it is to be untangled, with the root and the end spaced a predetermined distance apart; and The untwisting step involves clamping the stranded wire in a twisting clamping direction that intersects with the extension direction of the stranded wire using a pair of clamping members. The pair of clamping members are slid together from the root side to the end side of the stranded wire while simultaneously reciprocating relative to each other in the untwisting direction. This untwisting direction intersects both the extension direction and the twisting clamping direction. During the untangling step, compared to when the pair of clamping members are located on the end side, when the pair of clamping members are located on the root side, the stranded wire is untangled with a smaller clamping force in the stranding clamping direction, a smaller operating force for the reciprocating position offset movement, and a smaller position offset for the reciprocating position offset movement.

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