Apparatus and method for forming cutouts for peeling

Abstract

Each of cutting mechanisms of an apparatus for forming a notch for peeling includes: a stopper capable of approaching and / or separating from an outer peripheral surface of a coated electric wire; a biasing portion that biases the stopper; a cutting edge; a stopper moving mechanism configured to move the stopper together with the cutting blade to bring the stopper into contact with the outer peripheral surface when the notch is formed; and a blade moving mechanism configured to advance the cutting blade forward to a position corresponding to the specified cut depth to form a cut after the stopper comes into contact with the outer peripheral surface.

Description

Technical Field

[0001] The present invention relates to an apparatus and method for forming an incision for peeling, wherein an incision is formed from the outer peripheral surface of a coated electric wire for peeling the coated electric wire. Background Art

[0002] As one of the conventional processes for processing the end of a coated electric wire, a peeling process is widely used, in which the coating is removed to expose an inner conductor such as a core wire. In addition, a device for forming a peeling cut is known, which forms a cut in the coated electric wire from the outer peripheral surface of the coated electric wire so that the peeled area can be removed (see, for example, Patent Document 1). The device for forming a peeling cut according to this type of Patent Document 1 includes a pair of V-shaped cutting blades, which are configured to sandwich the coated electric wire between them to bite into the outer peripheral surface, and then rotate around the wire axis of the coated electric wire to form the peeling cut.

[0003] Reference List

[0004] Patent Literature

[0005] Patent Document 1: JP 2000-350324 A Summary of the invention

[0006] The covered electric wire includes a thick electric wire including multiple layers of covering materials, such as an inner covering, a braid, a metal foil, and an outer covering, arranged around a core wire and stacked on each other. In most cases, this type of device for forming a peeling incision is constructed so that the wire axis is used as a reference for the movement of the V-shaped cutting blade when the covered electric wire is clamped by the V-shaped cutting blade, wherein the target position to be reached by the V-shaped cutting blade is determined as the distance from the wire axis. Then, the V-shaped cutting blade is moved toward the wire axis to clamp the covered electric wire so that the V-shaped cutting blade bites into the covered electric wire with a cut depth corresponding to the determined target position. For example, in the case of forming an incision in the thick electric wire as described above, the target position of the V-shaped cutting blade is determined as the distance from the wire axis obtained by subtracting the thickness of the covering material to be removed from the radius of the core wire and the sum of the respective thicknesses of the multiple layers of covering materials. In the case of thick wires, the tolerance of the target position of the V-shaped cutting blade based on the wire axis is often large because the tolerance is a cumulative tolerance obtained from the tolerance of the core wire radius and the tolerance of the thickness of the coating material other than the coating material removed. This may result in low movement accuracy of the V-shaped cutting blade. For example, in the case of forming a cut in a thick wire to the desired coating material included in the thick wire, due to the low movement accuracy of the V-shaped cutting blade, the cut may be formed too deep, so that the cut may extend into the coating material further inside that should be kept untouched. The cut may also be formed too shallow, so that the cut may not be sufficient for peeling.

[0007] In addition, many coated electric wires are wound on bobbins for storage. During such storage, the core wire and / or the coating may be deformed and flattened due to the load of their own weight, or eccentricity may occur in which the axis of the wire may deviate from the center of the coated electric wire. When a coated electric wire having such deformation and / or eccentricity is cut by the above-mentioned type of device for forming a peeling incision, the rotation of a pair of V-shaped cutting blades around the axis of the wire may cause the depth of the incision obtained by the cutting blades in the direction around the axis of the wire to vary. As a result, the obtained incision may be too deep in some areas along the direction around the axis of the wire, thereby possibly cutting into a more inner portion that should not be touched, wherein the incision may be too shallow in some other areas along the direction around the axis of the wire, so that the wire may not be fully cut into.

[0008] Therefore, the above-mentioned type of device for forming a peeling incision, that is, a device having a pair of V-shaped cutting blades that clamp a coated electric wire and then rotate around the axis of the electric wire, has the following problem: when the incision is formed in a thick electric wire and in a coated electric wire wound on a bobbin for storage, the accuracy of the incision formation may be reduced.

[0009] Therefore, the present invention focuses on the above-mentioned problems, and an object of the present invention is to provide an apparatus and method for forming a peeling cut that can improve the accuracy of cut formation when forming a cut in a thick electric wire and / or a covered electric wire wound on a bobbin for storage.

[0010] In order to achieve the above-mentioned purpose, a device for forming a peeling incision comprises: one or more cutting mechanisms, which are configured to be arranged around the wire axis of a coated wire, wherein each of the one or more cutting mechanisms is configured to form one or more incisions in the coated wire from the outer peripheral surface of the coated wire at a specified incision depth; and a rotating mechanism, which is configured to rotate the one or more cutting mechanisms around the wire axis and thereby extend the one or more incisions in a direction around the wire axis when the one or more cutting mechanisms have formed the one or more incisions in the coated wire, so that a peeling area corresponding to the incision depth can be removed; wherein each of the one or more cutting mechanisms comprises: a stopper, which is capable of approaching and / or moving away from the outer peripheral surface in a cross direction intersecting with the outer peripheral surface; a biasing portion, which biases the stopper toward the outer peripheral surface in the cross direction; a cutting blade, which is A mechanism configured to be movable together with the stopper and relative to the stopper in the cross direction; a stopper moving mechanism configured to move the stopper and the cutting edge together in the cross direction, wherein during the formation of the one or more incisions, the stopper moving mechanism is configured to move the stopper together with the cutting edge that has been positioned at a predetermined tool initial position, and thereby bring the stopper into contact with the peripheral surface; and a tool moving mechanism configured to move the cutting edge in the cross direction relative to the stopper, wherein the tool moving mechanism is configured to position the cutting edge at the tool initial position before the stopper comes into contact with the peripheral surface, wherein the tool moving mechanism is configured to advance the cutting edge forward from the tool initial position to a position corresponding to the incision depth after the stopper comes into contact with the peripheral surface, so as to form the one or more incisions in the peripheral surface.

[0011] In order to achieve the above-mentioned purpose, the present invention also provides a method for forming an incision for peeling, comprising: a preparation step, placing the coated electric wire in the device as described above, and positioning the cutting blade and the stopper at the tool initial position and the stopper initial position respectively through the device, wherein the stopper initial position is spaced apart from the outer peripheral surface; a stopper contact step, making the stopper contact the outer peripheral surface; an incision forming step, after the stopper contacts the outer peripheral surface, pushing the cutting blade forward to a position corresponding to the incision depth to form one or more incisions therein; and a rotation step, in a state where the one or more cutting mechanisms have formed the one or more incisions in the coated electric wire, rotating the one or more cutting mechanisms around the wire axis and thereby extending the one or more incisions in a direction around the wire axis so that the peeled area can be removed.

[0012] With the apparatus and method for forming an incision for peeling, it is possible to improve the accuracy of incision formation when forming an incision in a thick electric wire and / or in a coated electric wire wound on a bobbin for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram showing a device for forming an incision for peeling according to an embodiment;

[0014] Figure 2 It is shown that Figure 1 A schematic diagram of a covered electric wire in which an incision is formed by a device for forming an incision for peeling shown in FIG.

[0015] Figure 3 Show according to Figure 2 The covered wire is along Figure 2 A cross-sectional view along line V11-V11 shown;

[0016] Figure 4 Shows the view from the cutting rotation direction according to Figure 1 A schematic side view of a cutting mechanism;

[0017] Figure 5 Shown for illustration purposes Figure 1 and Figure 4 A schematic flow chart of a series of processes of a method for forming a peeling incision at an end of a coated electric wire by a device for forming a peeling incision shown in FIG.

[0018] Figure 6 Shown to illustrate the use of Figure 4 The side view of the stop roller and the peripheral structure of the cutting edge is shown according to Figure 5 An illustrative view of some processes of forming a peeling method using an incision.

[0019] Reference Mark List

[0020] 1Device for forming an incision for peeling

[0021] 2-coated wire

[0022] 2a Outer surface

[0023] 2b Wire axis

[0024] 11 Cutting mechanism

[0025] 12 Rotation mechanism

[0026] 21 core wire

[0027] Covered within 22

[0028] 23 Braid

[0029] 24 metal foil

[0030] 25 outermost covering

[0031] 111 stopper

[0032] 111a Stopper frame

[0033] 111a-1 Eaves

[0034] 111b Stop roller

[0035] 111b-1 roller axis

[0036] 112 Bias section

[0037] 112a offset frame

[0038] 112a-1 Spring receiving eaves

[0039] 112b compression spring

[0040] 113 cutting edge

[0041] 113a Tool axis

[0042] 114 Stopper moving mechanism

[0043] 114a drive source

[0044] 114b Stopper connecting frame

[0045] 115 tool moving mechanism

[0046] 115a servo motor

[0047] 115b tool connection frame

[0048] D11 Tool rotation direction

[0049] D12 Cross Direction

[0050] L11 forward distance

[0051] P11 tool initial position

[0052] P12 stopper initial position

[0053] P13 incision formation position

[0054] S11 Preparation Steps

[0055] S12 Stopper Contact Steps

[0056] S13 incision formation steps

[0057] S14 Rotation Steps

[0058] T11 cut depth DETAILED DESCRIPTION

[0059] Hereinafter, embodiments of an apparatus and method for forming an incision for peeling will be described.

[0060] Figure 1 A schematic diagram showing an apparatus for forming an incision for skin peeling according to an embodiment. Figure 2 A schematic diagram of the covered wire is shown, which can be obtained by Figure 1 The incision is formed on the coated electric wire by using the device for forming the incision for peeling, and Figure 3 Show according to Figure 2 The covered wires are along Figure 2 A cross-sectional view along line V11 - V11 is shown.

[0061] First, the covered electric wire 2 to be cut according to the present embodiment is a thick electric wire including a multi-layer covering material and a conductive core wire 21 covered by the multi-layer covering material. The covered electric wire 2 is wound on a bobbin for storage and is used, for example, for a high-voltage wiring harness of an automobile. The covered electric wire 2 includes an inner covering 22 made of an insulating resin, a conductive braid 23, a conductive metal foil 24, and an outermost covering 25 made of an insulating resin as covering materials. In order to process the end of the covered electric wire 2, the device 1 for forming a peeling cut is constructed to form one or more cuts starting from the outer peripheral surface 2a of the covered electric wire 2 at a specified cut depth, whereby a peeling area corresponding to the cut depth can be removed.

[0062] For example, the incision formation as described below is possible. For example, the following incision formation process can be performed: the depth extending to the inner circumference of the metal foil 24 is designated as the incision depth, so that the outermost coating 25 and the metal foil 24 are defined as a peeling area, wherein one or more incisions extending to the inner circumference of the metal foil 24 are formed. In this example, after peeling, the braid 23 will be exposed at the end of the coated electric wire 2, and the braid 23 accommodates the inner coating 22 and the core wire 21 on its inner side. In addition, as another example, the following incision formation process can be performed: the depth extending to the inner circumference of the inner coating 22 is designated as the incision depth, so that all the coating materials except the core wire 21 are defined as a peeling area, wherein one or more incisions extending to the inner circumference of the inner coating 22 are formed. In this example, after peeling, the core wire 21 is exposed at the end of the coated electric wire 2.

[0063] The device 1 for forming a peeling incision is capable of forming such an incision in a coated electric wire 2, and includes three cutting mechanisms 11 and a rotating mechanism 12. The three cutting mechanisms 11 are arranged around the wire axis 2b of the coated electric wire 2, and are configured to form one or more incisions at a specified incision depth starting from the outer peripheral surface 2a of the coated electric wire 2. In the present embodiment, the three cutting mechanisms 11 are arranged around the wire axis 2b and are spaced apart from each other at an angle of 120°. The rotating mechanism 12 is configured to rotate the three cutting mechanisms 11 around the wire axis 2b in a cutting rotation direction D11 in a state where the cutting mechanisms 11 have formed one or more incisions in the coated electric wire 2, and thus one or more incisions extend around the wire axis 2b in the cutting rotation direction D11. In the present embodiment, the rotating mechanism 12 rotates the three cutting mechanisms 11 around the wire axis 2b in the cutting rotation direction D11 at an angle greater than or equal to 120°. This rotation connects the cuts at three positions in the direction around the electric wire axis 2b to obtain one cut extending over the entire circumference of the coated electric wire 2, thereby enabling removal of a peeled area corresponding to a specified cut depth.

[0064] In the device 1 for forming an incision for peeling, the three cutting mechanisms 11 are configured identically. Hereinafter, the configuration of the cutting mechanism 11 will be described with respect to one of the cutting mechanisms 11.

[0065] Figure 4 Shows the view from the cutting rotation direction according to Figure 1 Schematic side view of the cutting mechanism.

[0066] like Figure 1 and Figure 4 As shown, the cutting mechanism 11 includes a stopper 111 , a biasing portion 112 , a cutting edge 113 , a stopper moving mechanism 114 and a knife moving mechanism 115 .

[0067] The stopper 111 is configured to be able to approach and / or move away from the outer peripheral surface 2a of the covered electric wire 2 in the intersecting direction D12 intersecting the outer peripheral surface 2a. Figure 4 As shown, the stopper 111 includes a stopper frame 111a and a stopper roller 111b, the stopper frame 111a extending in the cross direction D12. The stopper roller 111b is a disc-shaped member, which is pivotally mounted to the end of the stopper frame 111a facing the coated electric wire 2 so that the stopper roller 111 can rotate around a roller axis 111b-1, wherein the roller axis 111a-1 extends along the electric wire axis 2b and crosses the cross direction D12.

[0068] The biasing portion 112 is a member that biases the stopper 111 toward the outer peripheral surface 2a of the coated electric wire 2 in the cross direction D12. The biasing portion 112 includes a biasing frame 112a that holds the stopper frame 111a of the stopper 111 in such a manner that the stopper frame 111a is movable in the cross direction D12, and a compression spring 112b that biases the stopper frame 111a in the cross direction D22. The biasing frame 112a includes a spring receiving flange 112a-1 that is opposed to the flange 111a-1 of the stopper frame 111a and holds the compression spring 112b between the spring receiving flange 112a-1 and the flange 111a-1, wherein the flange 111a is suspended on the side of the stopper frame 111a opposite to the coated electric wire 2 and holds the cutter moving mechanism 115. The compression spring 112b is constructed in the form of a coil spring, which is installed in a compressed state between the flange 111a-1 of the stopper frame 111a and the spring receiving flange 112a-1 of the biasing frame 112a. The compression spring 112b biases the stop roller 111b toward the outer peripheral surface 2a of the coated electric wire 2 by biasing the flange 111a-1 of the stopper frame 111a.

[0069] The cutting blade 113 is a disc-shaped cutting member that can move together with the stopper 111 and can also move relative to the stopper 111 in the intersecting direction D12. According to the present embodiment, the cutter moving mechanism 115 includes a cutter frame 115b as described below, wherein the cutting blade 113 is mounted to the cutter frame 115a so that the cutting blade 113 can pivot around a cutter axis 113a, wherein the cutter axis 113a extends parallel to the roller axis 111b-1 so as to extend along the electric wire axis 2b and intersect with the intersecting direction D12.

[0070] The stopper moving mechanism 114 is configured to move the stopper 111 in the cross direction D12 together with the cutting blade 113. In the process of forming one or more cuts, the stopper moving mechanism 114 moves the stopper 111 together with the cutting blade 113 that has been positioned at the predetermined tool initial position P11, so that the stopper roller 111b of the stopper 111 contacts the outer peripheral surface 2a of the coated electric wire 2. The stopper moving mechanism 114 includes a predetermined driving source 114a and a stopper connecting frame 114b, wherein the stopper connecting frame 114b is configured to be driven by the driving source 114b in the cross direction D12 and is connected to the stopper 111 via the biasing frame 112a of the biasing portion 112.

[0071] The tool moving mechanism 115 is configured to move the cutting blade 113 relative to the stopper 111 in the cross direction D12. First, before the stopper 111 is brought into contact with the outer peripheral surface 2a of the coated electric wire 2, the tool moving mechanism 115 positions the cutting blade 113 at the tool initial position P11. After the stopper 111 is brought into contact with the outer peripheral surface 2a, the tool moving mechanism 115 advances the cutting blade 113 from the tool initial position P11 to a position corresponding to the specified incision depth to form an incision. The tool moving mechanism 115 according to the present embodiment includes a servo motor 115a as a driving source, wherein the servo motor 115a can be driven accurately. In addition, the tool moving mechanism 115 includes a tool connection frame 115b, which is driven by the servo motor 115a in the cross direction D12, wherein the cutting blade 113 is pivotally mounted to the end of the tool connection frame 115 facing the coated electric wire 2. The cutter moving mechanism 115 accurately moves the cutting blade 113 via the cutter connecting frame 115b by the servo motor 115a to move the cutting blade 113 into the outer peripheral surface 2a of the coated electric wire 2 at a specified incision depth. Here, when the stopper roller 111b is brought into contact with the outer peripheral surface 2a by the stopper moving mechanism 114, after the stopper roller 111b is brought into contact, the movement of the stopper 111 is buffered by absorbing the excessive movement of the stopper 111 by using the compression spring 112b of the biasing portion 112 as a buffer member. Therefore, for the movement of the stopper 111, the accuracy of the stroke of the cutting blade 113 is not required, and it is possible to adopt, for example, a general motor and / or a cylinder mechanism, which has lower accuracy and lower cost than the servo motor 115a, as the driving source 114a of the stopper moving mechanism 114.

[0072] Next, a method of forming a peeling incision will be described, wherein a peeling incision is formed at the end of a coated electric wire 2 using the apparatus 1 for forming a peeling incision as described above. Although the following description includes some repetitions of the above description, the following description will be made with reference to other drawings.

[0073] Figure 5 Shown for illustration purposes Figure 1 and Figure 4 The illustrated apparatus for forming a peeling incision is a schematic flowchart of a series of processes of a method for forming a peeling incision at an end portion of a coated electric wire. Figure 6 Shown to illustrate the use of Figure 4 The side view of the stop roller and the peripheral structure of the cutting edge is shown according to Figure 5 An illustrative view of some processes of forming a peeling method using an incision.

[0074] according to Figure 5 The process of forming the peeling incision starts when the coated electric wire 2 in which the incision is to be formed is prepared. When a series of processes starts, the preparation step S11 is first performed. In the preparation step S11, the coated electric wire 2 is placed in the device 1, and in each of the three cutting mechanisms 11, the stopper 111 and the cutting blade 113 are positioned relative to the coated electric wire 2. This means that the cutting blade 113 is positioned at the tool initial position P11, and the stopper 111 is positioned at the stopper initial position P12, wherein the stopper initial position P12 is spaced apart from the outer peripheral surface 2a. The tool initial position P11 is set so that the periphery of the cutting blade 113 is farther away from the coated electric wire 2 than the periphery of the stop roller 111b of the stopper 111.

[0075] The preparation step S11 is followed by a stopper contact step S12 of bringing the stopper roller 111b of the stopper 111 into contact with the outer peripheral surface 2a of the coated electric wire 2, wherein the stopper contact step S12 is performed by moving the stopper 111 using the stopper moving mechanism 114. At this time, even after the stopper roller 111b comes into contact with the outer peripheral surface 2a, the cutting edge 113 that has been positioned at the tool initial position P11 according to the preparation step S11 remains away from the outer peripheral surface 2a. In the stopper contact step S12, the stopper 111 moves toward the outer peripheral surface 2a so that the stopper 111 is slightly pushed back against the bias applied by the biasing portion 112. At this time, the cutting edge 113 moves integrally with the stopper 111.

[0076] After the stopper 111 is brought into contact with the outer peripheral surface 2a according to the stopper contact step S12, the cut forming step S13 is performed, in which the cutting blade 113 is advanced to form a cut in the coated electric wire 2. In the cut forming step S13, the cutting blade 113 is advanced by the tool moving mechanism 115 from the tool initial position P11 by the advancement amount L11, wherein the advancement amount L11 is set to reach the cut forming position P13 corresponding to the specified cut depth t11. In the cut forming step S13, only the cutting blade 113 is moved without moving the stopper 111.

[0077] After each of the three cutting mechanisms 11 has performed the incision forming step S13, the incision extension according to the rotation step S14 will be performed last. In the rotation step S14, in a state where the cutting mechanism 11 has formed an incision in the coated electric wire 2, the three cutting mechanisms 11 are rotated by an angle greater than or equal to 120° around the wire axis 2b by the rotation mechanism 12. Through this rotation, the incisions at three positions extend in the direction around the wire axis 2b to connect to each other, so that a cut extending over the entire circumference of the coated electric wire 2 in the direction around the wire axis 2b is formed at the end of the coated electric wire 2. Forming this incision over the entire circumference enables the peeling area corresponding to the specified incision depth t11 to be removed, wherein a series of processes of the method for forming the peeling incision are terminated here. After this, the peeling area that can be removed is removed to expose its interior. The peeling area can be removed manually by the operator, or can be removed by using a dedicated removal device.

[0078] The device 1 and method for forming a peeling incision according to the above-mentioned embodiment can have one or more of the following effects: According to the present embodiment, the actual outer peripheral surface 2a of the coated electric wire 2 is identified by the contact of the stopper 111 with the outer peripheral surface 2a, wherein in the cutting mechanism 11, the cutting blade 113 advances from the outer peripheral surface 2b identified as a reference to the incision depth t11 to bite into the outer peripheral surface 2a. Thereafter, the cutting mechanism 11 rotates around the wire axis 2b, thereby forming an incision extending over the entire circumference of the coated electric wire 2, which enables the peeling area to be removed. Since the actual outer peripheral surface 2a identified by the contact of the stopper 111 with the outer peripheral surface 2a is used as a reference for the cutting blade 113 to advance forward, even in the case of forming an incision in a thick electric wire, the influence of the accumulated thickness tolerance on each coating material can be suppressed, thereby improving the accuracy of incision formation. Furthermore, according to the present embodiment, when a cut is formed in the coated electric wire 2 having deformation and / or eccentricity caused by winding and storage on a bobbin, the stopper 111 is biased toward the outer peripheral surface 2a by the biasing portion 112, and moves in the intersecting direction D12 by following the outer peripheral surface 2a during the rotation of the cutting mechanism 11. Furthermore, the movement of the stopper 111 under the bias can make it possible to identify the actual outer peripheral surface 2a without being affected by the deformation and / or eccentricity, wherein such an outer peripheral surface 2a can be used as a reference to suppress the change in the cut depth t11 during the rotation of the cutting mechanism 11, so that the accuracy of the cut formation can be improved. In this way, the present embodiment can improve the accuracy of the cut formation when forming a cut in a thick electric wire and / or in the coated electric wire 2 wound on a bobbin for storage. Furthermore, for thick wires, according to the present embodiment, a specified cut depth t11 can be appropriately variably selected, which enables various cuts to be formed without changing the device structure, such as various cuts extending only to the outermost coating 25, extending to the metal foil 24, extending to the braid 23, or extending to the inner coating 22.

[0079] According to the present embodiment, the stopper 111 includes a stopper roller 111b that is rotatable around a roller axis 111b-1, wherein the roller axis 111b-1 extends along the electric wire axis 2b and intersects with the intersecting direction D12. The stopper 111 comes into contact with the outer peripheral surface 2a at the stopper roller 111b. In this way, due to the rotatable stopper roller 111b, the stopper 111 and the cutting mechanism 11 can smoothly follow the outer peripheral surface 2a of the coated electric wire 2 during the rotation of the cutting mechanism 11 by the rotation mechanism 12.

[0080] In addition, the biasing portion 112 according to the present embodiment biases the stopper 111 by applying a biasing pressure to the side of the stopper 111 opposite to the outer peripheral surface 2a in the intersecting direction D12. With such a configuration, the vertical movement of the stopper 111 and the cutting mechanism 11 following the outer peripheral surface 2a can be effectively absorbed in the intersecting direction D12 intersecting the outer peripheral surface 2a of the coated electric wire 2.

[0081] Furthermore, according to the present embodiment, the tool moving mechanism 115 includes a servo motor 115a. The tool moving mechanism 115 is configured to move the cutting blade 113 by the servo motor 115a. This configuration can further improve the accuracy of the cut formation by accurately moving the cutting blade 113 by the servo motor 115a.

[0082] It should be noted that the above-mentioned embodiment only shows a representative configuration of the device and method for forming the incision for peeling. The device and method for forming the incision for peeling are not limited thereto, but can be modified and implemented in various ways.

[0083] For example, the above embodiment shows the covered electric wire 2 of the high voltage wire harness for automobiles as an example of a covered electric wire with a cut for peeling. However, the covered electric wire with the cut formed is not limited to this, but the covered electric wire can be used in any specific manner as long as the core wire is covered with one or more covering materials.

[0084] As an example of a covered electric wire in which a cut for peeling is formed, the above embodiment further shows a covered electric wire 2 in the form of a thick electric wire, which includes a conductive core wire 21 covered by a multi-layer covering material. As an example of a multi-layer covering material as described above, the present embodiment shows an inner covering 22 of an insulating resin, a conductive braid 23, a conductive metal foil 24, and an outermost covering 25 of an insulating resin. However, the covered electric wire subjected to cut formation is not limited thereto, but may include a core wire covered by a single-layer resin covering, and any specific layer structure, for example, may be used for a multi-layer covering material, even for a thick electric wire.

[0085] In addition, as an example of the cutting mechanism, the above embodiment shows three cutting mechanisms 11, which are arranged around the wire axis 2b of the coated electric wire 2 and spaced apart from each other at an angular interval of 120°. However, the cutting mechanism is not limited thereto, but for the cutting mechanism, any specific number of cutting mechanisms and any specific arrangement thereof may be selected as long as one or more cutting mechanisms are arranged around the wire axis of the coated electric wire.

[0086] In addition, as an example of a stopper, the above embodiment shows the stopper 111, which contacts the outer peripheral surface 2a at the stop roller 111b. However, the stopper is not limited to this, and may be a stopper without a stop roller, for example, the stopper is constructed in the form of a rod and / or a belt and contacts the outer peripheral surface of the coated electric wire at the end of the stopper. However, as described above, by making the stopper 111 contact the outer peripheral surface 2a at the stop roller 111b, the stopper 11 and the cutting mechanism 11 can smoothly follow the outer peripheral surface 2a of the coated electric wire 2.

[0087] In addition, as an example of a biasing portion, the above embodiment shows a biasing portion 112 that biases the stopper 111 by applying a biasing pressure to the side of the stopper 111 opposite to the peripheral surface 2a. However, the biasing portion is not limited thereto, and any specific biasing embodiment can be selected as long as it biases the stopper toward the peripheral surface in the cross direction. However, as described above, by applying a biasing pressure to the side of the stopper 111 opposite to the peripheral surface 2a to bias the biasing portion 112 of the stopper 111, the vertical movement of the stopper 111 and the cutting mechanism 11 following the peripheral surface 2a can be effectively absorbed. In addition, as an example of applying a biasing pressure by a biasing portion, the above embodiment shows a compression spring 112b in the form of a coil spring, which is installed in a compressed state between the eaves 111a-1 of the stopper frame 111a and the spring receiving eaves 112a-1 of the biasing frame 112a. However, the application of the biasing pressure is not limited to the method using the compression spring, but the biasing pressure can also be applied, for example, by using a damping mechanism with hydraulic and / or pneumatic pressure. Even in the case of using a compression spring, it is not limited to a coil spring, but any spring, such as a leaf spring, can be used, wherein any mounting structure for the spring can also be adopted according to the embodiment of the spring.

[0088] In addition, as an example of a tool moving mechanism, the above embodiment shows a tool moving mechanism 115 that moves the cutting blade 113 by a servo motor 115a. In addition, as an example of a stopper moving mechanism, the above embodiment shows a stopper moving mechanism 114 that uses a low-cost, such as a conventional motor and / or a cylinder mechanism as a driving source 114a. However, the tool moving mechanism and the stopper moving mechanism are not limited to this, but a servo motor can be used for these two mechanisms, or a motor, a cylinder mechanism, etc. can be used as a driving source for these two mechanisms. However, as described above, by using a servo motor 115a as a driving source for the tool moving mechanism 115, the accuracy of the incision formation can be further improved. In addition, by using a conventional motor and / or a cylinder mechanism with low cost, etc. as a driving source for the stopper moving mechanism 114, the cost of the entire device can be reduced.

Claims

1. A device for forming an incision for peeling, comprising: one or more cutting mechanisms, the one or more cutting mechanisms being configured to be arranged around a wire axis of a covered electric wire, wherein each of the one or more cutting mechanisms is configured to form one or more cuts in the covered electric wire from an outer peripheral surface of the covered electric wire at a specified cut depth; and a rotating mechanism configured to rotate one or more of the cutting mechanisms around the wire axis in a state where one or more of the cutting mechanisms have formed one or more of the cuts in the coated wire and thereby extend one or more of the cuts in a direction around the wire axis so that a peeled area corresponding to the cut depth can be removed; Wherein, each of the more than one cutting mechanisms comprises: a stopper capable of approaching and / or moving away from the outer peripheral surface in a direction intersecting the outer peripheral surface; a biasing portion that biases the stopper toward the outer peripheral surface in the intersecting direction; a cutting edge configured to be movable with and relative to the stopper in the cross direction; a stopper moving mechanism configured to move the stopper and the cutting edge together in the intersecting direction, wherein during the formation of one or more of the cuts, the stopper moving mechanism is configured to move the stopper together with the cutting edge that has been positioned at a predetermined tool initial position and thereby bring the stopper into contact with the outer peripheral surface; and A tool moving mechanism, the tool moving mechanism being configured to move the cutting blade in the cross direction relative to the stopper, wherein the tool moving mechanism is configured to position the cutting blade at the tool initial position before the stopper comes into contact with the peripheral surface, and wherein the tool moving mechanism is configured to advance the cutting blade forward from the tool initial position to a position corresponding to the incision depth after the stopper comes into contact with the peripheral surface, so as to form more than one incision in the peripheral surface.

2. The device according to claim 1, in, The stopper includes a stop roller that is rotatable about a roller axis that extends along the electric wire axis and intersects with the intersecting direction, and The stopper is configured to come into contact with the outer peripheral surface at the stop roller.

3. The device according to claim 1, in, The biasing portion biases the stopper by applying a biasing pressure to a side of the stopper opposite to the outer peripheral surface in the intersecting direction.

4. The device according to claim 1, in, The tool moving mechanism includes a servo motor, and Wherein, the tool moving mechanism is configured to move the cutting blade via the servo motor.

5. A method for forming an incision for peeling, comprising: a preparation step of placing the covered electric wire in the apparatus according to any one of claims 1 to 4, and positioning the cutting blade and the stopper at the cutter initial position and the stopper initial position, respectively, by the apparatus, wherein the stopper initial position is spaced apart from the outer peripheral surface; a stopper contacting step of bringing the stopper into contact with the outer peripheral surface; a cut forming step of advancing the cutting blade forward to a position corresponding to the cut depth to form one or more cuts therein after the stopper comes into contact with the outer peripheral surface; and A rotation step, in which one or more cutting mechanisms have formed one or more incisions in the coated electric wire, rotate one or more cutting mechanisms around the electric wire axis, and thereby extend one or more incisions in a direction around the electric wire axis, so that the peeled area can be removed.

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