Coating layer cutting tool and coating layer cutting method

Abstract

To provide a coating layer cutting tool and a coating layer cutting method that can effectively impart driving force to a coated wire and suppress meandering of the coated wire.SOLUTION: A coating layer cutting tool 1A includes: a toothed roller 2 that has a plurality of teeth T for feeding a coated wire 9 in a first direction DR1, and is rotatable about a first axis AX1; a first guide roller 3a that is arranged opposite the toothed roller, guides movement of the coated wire in the first direction, and is rotatable about a second axis AX2 parallel to the first axis; a second guide roller 3b that is arranged on the first direction side of the first guide roller, guides movement of the coated wire in the first direction, and is rotatable about a third axis AX3 parallel to the second axis; and a blade body 4 that is arranged on the first direction side of the toothed roller, and cuts a coating layer 93 of the coated wire fed in the first direction by the toothed roller along the longitudinal direction of the coated wire.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a coating layer cutting tool and a coating layer cutting method. [Background technology]

[0002] Tools for cutting coating layers are known. Conventionally, cutting the coating layer of a coated wire in the longitudinal direction has generally been performed by striking a tool having a cutting blade with a hammer. Patent Documents 1 and 2 disclose cutting tools that do not use a hammer, but these are unsuitable for cutting a relatively thick coating layer. In addition, there are problems such as the coated wire being prone to meandering.

[0003] Patent Document 1 discloses a tool for cutting cable sheaths. The tool described in Patent Document 1 includes a cutting tool with a cutting blade for cutting the sheath, a guide toothed wheel with teeth that bite into the sheath, and a handle for rotating the guide toothed wheel.

[0004] Patent Document 2 discloses a cable sheath stripping tool. The cable sheath stripping tool described in Patent Document 2 includes a circular rotary blade attached to a rotary blade support and two pairs of receiving rollers facing the rotary blade support. The rotary blade support can be rotated 90 degrees around its axis to change the cutting direction. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 49-49174 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-159268 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a coating layer cutting tool and a coating layer cutting method that can effectively impart a driving force to a coated wire and suppress meandering of the coated wire. [Means for solving the problem]

[0007] The present invention relates to a coating layer cutting tool and a coating layer cutting method as described below.

[0008] (1) a toothed roller rotatable about a first axis and having a plurality of teeth for feeding a coated wire having a wire rod and a coating layer covering the wire rod in a first direction; a first guide roller disposed opposite the toothed roller, configured to guide movement of the covered wire in the first direction, and rotatable about a second axis parallel to the first axis; a second guide roller disposed on the first direction side of the first guide roller, guiding movement of the covered wire in the first direction and rotatable about a third axis parallel to the second axis; a blade disposed on the first direction side of the toothed roller and configured to cut the coating layer of the coated wire fed in the first direction by the toothed roller along the longitudinal direction of the coated wire; Equipped with Coating layer cutting tool. (2) The cutting device further includes a gap changing mechanism that simultaneously changes a first gap between the toothed roller and the first guide roller and a second gap between the blade and the second guide roller. The coating layer cutting tool according to (1) above. (3) a first base supporting the first guide roller and the second guide roller; a second base supporting the toothed roller and the blade; Further comprising: The distance changing mechanism has a threaded rod that moves the second base relative to the first base. The coating layer cutting tool according to (2) above. (4) A guide block is further provided opposite the second guide roller, the guide block has a guide surface that guides movement of the covered wire in the first direction, When a direction opposite to the first direction is defined as a second direction, a virtual plane formed by virtually extending the guide surface in the second direction is configured to cross a part of the plurality of teeth. The coating layer cutting tool according to any one of (1) to (3) above. (5) The blade is a non-rotating blade. The coating layer cutting tool according to any one of (1) to (3) above. (6) When the direction opposite to the first direction is defined as a second direction and the direction from the toothed roller toward the first guide roller is defined as a third direction, the blade body is a blade portion having a cutting edge for cutting the coating layer and extending along the third direction; a guide plate connected to an end of the blade portion on the third direction side and configured to guide movement of the coating layer cut by the blade edge; a protruding portion provided at an end portion of the guide plate on the second direction side and protruding further toward the second direction side than the cutting edge; have The coating layer cutting tool according to (5) above. (7) When the direction from the toothed roller toward the first guide roller is defined as a third direction, the coating layer guide portion of the second guide roller is retracted toward the third direction compared to the coating layer guide portion of the first guide roller. The coating layer cutting tool according to any one of (1) to (3) above. (8) A connecting portion to which a device for applying a driving force to the toothed roller is detachably connected is further provided. The coating layer cutting tool according to any one of (1) to (3) above. (9) Each of the first guide roller and the second guide roller is a tapered roller having two tapered surfaces that define an annular valley portion with which the covered wire comes into contact. The coating layer cutting tool according to any one of (1) to (3) above. (10) a step of clamping a coated wire having a wire rod and a coating layer covering the wire rod between a toothed roller rotatable around a first axis and a plurality of guide rollers including a first guide roller and a second guide roller; bringing a blade into contact with an end of the coating layer on the first direction side; cutting the coating layer; Equipped with The step of cutting the coating layer includes: rotating the toothed roller having a plurality of teeth about the first axis, so that the plurality of teeth contacting the covered wire push the covered wire in the first direction; the blade body contacting the coating layer cuts the coating layer along the longitudinal direction of the coated wire in response to the coated wire being pushed in the first direction; The first guide roller, which is disposed opposite the toothed roller, and the second guide roller, which is disposed on the first direction side of the first guide roller, guide the movement of the covered wire in the first direction. Contains Covering layer cutting method. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a coating layer cutting tool and a coating layer cutting method that can effectively impart a driving force to a coated wire and suppress meandering of the coated wire. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic front view showing a coating layer cutting tool according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 3] FIG. 3 is a schematic cross-sectional view showing a coating layer cutting tool according to the first embodiment. [Figure 4] FIG. 4 is a schematic front view showing how the gap between the toothed roller and the first guide roller is changed. [Figure 5]FIG. 5 is a schematic perspective view showing the state in which the coating layer cutting tool is removed from the coated wire. [Figure 6] FIG. 6 is a schematic perspective view showing the coating layer cutting tool according to the first embodiment. [Figure 7] FIG. 7 is a schematic side view showing the coating layer cutting tool according to the first embodiment. [Figure 8] FIG. 8 is a schematic perspective view showing an example of a guide block. [Figure 9] FIG. 9 is a schematic perspective view showing an example of a blade body. [Figure 10] FIG. 10 is a view of the blade body as seen in the first direction. [Figure 11] FIG. 11 is a schematic cross-sectional view showing a coating layer cutting tool according to the first embodiment. [Figure 12] FIG. 12 is a schematic cross-sectional view showing a coating layer cutting tool according to a modified example of the first embodiment. [Figure 13] FIG. 13 is a schematic perspective view showing the coating layer cutting tool according to the first embodiment. [Figure 14] FIG. 14 is a schematic cross-sectional view showing a coating layer cutting tool according to the first embodiment. [Figure 15] FIG. 15 is a schematic two-sided view showing a state in which a manual tool for applying a driving force to the toothed roller is connected to the coating layer cutting tool in the first embodiment. [Figure 16] FIG. 16 is a schematic front view showing the state after the placement step has been performed. [Figure 17] FIG. 17 is a schematic front view showing the state after the clamping step has been performed. [Figure 18] FIG. 18 is a flowchart showing an example of a coating layer cutting method according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a coating layer cutting tool 1 and a coating layer cutting method according to an embodiment will be described in detail with reference to the drawings. In this specification, components having the same functions are designated by the same or similar reference numerals. Repetitive descriptions of components designated by the same or similar reference numerals may be omitted.

[0012] (Direction definition) In this specification, the moving direction of the covered wire 9 is defined as a "first direction DR1," and the direction opposite to the first direction DR1 is defined as a "second direction DR2." In this specification, the direction perpendicular to the first direction DR1 and extending from the toothed roller 2 toward the first guide roller 3a is defined as a "third direction DR3," and the direction opposite to the third direction DR3 is defined as a "fourth direction DR4."

[0013] (First embodiment) A coating layer cutting tool 1A according to a first embodiment will be described with reference to FIGS. 1 to 15. FIG. 1 is a schematic front view showing the coating layer cutting tool 1A according to the first embodiment. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. FIG. 3 is a schematic cross-sectional view showing the coating layer cutting tool 1A according to the first embodiment. FIG. 4 is a schematic front view showing how the gap between the toothed roller 2 and the first guide roller 3a is changed. FIG. 5 is a schematic perspective view showing how the coating layer cutting tool 1A is removed from the coated wire 9. FIG. 6 is a schematic perspective view showing the coating layer cutting tool 1A according to the first embodiment. FIG. 7 is a schematic side view showing the coating layer cutting tool 1A according to the first embodiment. FIG. 8 is a schematic perspective view showing an example of a guide block 7. FIG. 9 is a schematic perspective view showing an example of a blade body 4. FIG. 10 is a view of the blade body 4 viewed in a first direction DR1. FIG. 11 is a schematic cross-sectional view showing a coating layer cutting tool 1A according to the first embodiment. FIG. 12 is a schematic cross-sectional view showing a coating layer cutting tool 1A according to a modified example of the first embodiment. FIG. 13 is a schematic perspective view showing a coating layer cutting tool 1A according to the first embodiment. FIG. 14 is a schematic cross-sectional view showing a coating layer cutting tool 1A according to the first embodiment. FIG. 15 is a schematic two-sided view showing a state in which a manual tool 8 that applies a driving force to the toothed roller 2 is connected to the coating layer cutting tool 1A according to the first embodiment. Note that a schematic side view is shown on the left side of FIG. 15, and a schematic front view is shown on the right side of FIG. 15.

[0014] As illustrated in FIG. 1, a coating layer cutting tool 1A in the first embodiment includes a toothed roller 2, a plurality of guide rollers 3 including a first guide roller 3a and a second guide roller 3b, and a blade body 4.

[0015] The toothed roller 2 has a plurality of teeth T and is rotatable around a first axis AX1. The teeth T feed the covered wire 9 in a first direction DR1. The covered wire 9 includes a wire material and a covering layer 93 that covers the wire material.

[0016] In the example shown in Fig. 2, the coating layer 93 covers a plurality of wires 91. In a cross section of the coated wire 9 perpendicular to the first direction DR1, the portion before being cut by the blade body 4 has an annular shape. In addition, in a cross section of the coated wire 9 perpendicular to the first direction DR1, the portion after being cut by the blade body 4 (see Fig. 2) has a shape in which a slit SL is provided in the annular shape.

[0017] In the example shown in FIG. 2 , multiple wires 91 are discretely arranged inside the coating layer 93. In other words, each of the multiple wires 91 is not integrated with the other wires. Alternatively, the multiple wires 91 may be integrated inside the coating layer 93. The number of wires 91 arranged inside the coating layer 93 may be, for example, one, two, three, four, five, six or more, ten or more, or twenty or more. Each of the wires 91 may be, for example, an electric wire, an optical fiber, or the like. The outer sheaths 91t of the multiple wires 91 may be color-coded in various colors. The coated wire 9 may be, for example, a cable for railway signals. The coated wire 9 may be a cord-attached coated wire that has a cord that can cut the coating layer 93 along the longitudinal direction of the coated wire 9.

[0018] The covering layer 93 may have a single layer structure or a multi-layer structure. In the example shown in FIG. 2, the covering layer 93 has a first covering layer 93a (e.g., a sheath) and a second covering layer 93b (e.g., a metal foil). The second covering layer 93b covers one or more wires 91. The second covering layer 93b is made of, for example, metal (more specifically, stainless steel). The thickness of the second covering layer 93b is, for example, 0.3 mm or less (more specifically, approximately 0.1 mm). The second covering layer 93b may be omitted.

[0019] The first covering layer 93a covers one or more wires 91. In the example shown in FIG. 2, the first covering layer 93a covers the multiple wires 91 via the second covering layer 93b. In other words, the first covering layer 93a covers the second covering layer 93b, and the multiple wires 91 are disposed inside the second covering layer 93b. The first covering layer 93a is made of a resin such as polyethylene. The thickness of the first covering layer 93a is, for example, 0.5 mm to 3 mm, 1 mm to 2 mm, or approximately 1.5 mm.

[0020] The outer diameter D1 of the coated wire 9 is, for example, not less than 14 mm and not more than 34 mm.

[0021] 1, the first guide roller 3a is disposed opposite the toothed roller 2. More specifically, the first guide roller 3a and the toothed roller 2 function as a pair of pinch rollers that pinch the covered wire 9.

[0022] The first guide roller 3a guides the movement of the covered wire 9 in a first direction DR1. The first guide roller 3a is rotatable about a second axis AX2 parallel to the first axis AX1. The first guide roller 3a is, for example, a free-rotating roller (more specifically, a roller driven by frictional force received from the covered wire 9).

[0023] The second guide roller 3b is disposed on the first direction DR1 side of the first guide roller 3a and guides the movement of the covered wire 9 in the first direction DR1. The second guide roller 3b is rotatable about a third axis AX3 parallel to the second axis AX2. The second guide roller 3b is, for example, a free-rotating roller (more specifically, a roller driven by frictional force received from the covered wire 9).

[0024] The blade body 4 is disposed closer to the first direction DR1 than the toothed roller 2. The blade body 4 cuts the coating layer 93 of the coated wire 9 fed in the first direction DR1 by the toothed roller 2 along the longitudinal direction of the coated wire 9. This cutting forms a slit SL in the coating layer 93 (see FIGS. 2 and 5, if necessary). When the coating layer 93 includes a first coating layer 93a and a second coating layer 93b, the blade body 4 simultaneously cuts the first coating layer 93a and the second coating layer 93b along the longitudinal direction of the coated wire 9.

[0025] The coating layer cutting tool 1A in the first embodiment includes a toothed roller 2 having a plurality of teeth T that feed the coated wire 9 in a first direction DR1, and a first guide roller 3a disposed opposite the toothed roller 2. Thus, when the toothed roller 2 rotates while the coated wire 9 is sandwiched between the toothed roller 2 and the first guide roller 3a, a propulsive force is effectively applied to the coated wire 9. Therefore, even if the coating layer 93 is relatively thick, the propulsive force can be used to smoothly cut the coating layer 93 along the longitudinal direction of the coated wire 9. Furthermore, the coating layer cutting tool 1A includes, in addition to the first guide roller 3a, a second guide roller 3b disposed on the first direction DR1 side of the first guide roller 3a. The multiple guide rollers 3, including the first guide roller 3a and the second guide roller 3b, prevent the coated wire 9 from advancing in an unintended direction and thus prevent the coated wire 9 from meandering.

[0026] In the first embodiment, an operator can hold the coating layer cutting tool 1A by hand and apply a driving force to the toothed roller 2 to cut the coating layer 93 of the coated wire 9 along the longitudinal direction of the coated wire 9. This operation can also be performed by one person.

[0027] Next, optional additional configurations that can be employed in the coating layer cutting tool 1A in the first embodiment will be described with reference to FIGS.

[0028] (force transmission member 50) In the example shown in Fig. 3, the coating layer cutting tool 1A has a force transmission member 50 that applies a rotational driving force about a first axis AX1 to the toothed roller 2. The force transmission member 50 may be formed of a single component or an assembly of multiple components. In the example shown in Fig. 3, the force transmission member 50 has a force input unit 51 that receives a driving force from an operating member, a power tool, or the like. In the example shown in Fig. 3, the force input unit 51 is formed of a hexagonal hole 51h.

[0029] (spacing change mechanism 6, first base 11, second base 12) In the example shown in Fig. 3, the coating layer cutting tool 1A has a gap change mechanism 6 that changes the gap between the toothed roller 2 and the first guide roller 3a. Fig. 4(a) shows the state before the gap between the toothed roller 2 and the first guide roller 3a is changed, and Fig. 4(b) shows the state after the gap between the toothed roller 2 and the first guide roller 3a has been changed.

[0030] 4, the gap change mechanism 6 simultaneously changes the first gap between the toothed roller 2 and the first guide roller 3a and the second gap between the blade body 4 and the second guide roller 3b. More specifically, the gap change mechanism 6 simultaneously changes the first gap between the toothed roller 2 and the first guide roller 3a and the second gap between the blade body 4 and the second guide roller 3b by the same amount. In FIG. 4, the amount M1 of change in the first gap between the toothed roller 2 and the first guide roller 3a, performed by the gap change mechanism 6, is equal to the amount M2 of change in the second gap between the blade body 4 and the second guide roller 3b, performed by the gap change mechanism 6.

[0031] When the coating layer cutting tool 1A has the gap changing mechanism 6, the coating layer cutting tool 1A can suitably cut each coating layer 93 of multiple types of coated wires 9 having different outer diameters. Furthermore, when the coating layer cutting tool 1A has the gap changing mechanism 6, the operator can fine-tune the degree to which the multiple teeth T of the toothed roller 2 bite into the coated wire 9. For example, when slippage occurs between the toothed roller 2 and the coating layer 93, the occurrence of the slippage can be suppressed by reducing the first gap described above.

[0032] 5, after the gap change mechanism 6 has increased both the first gap between the toothed roller 2 and the first guide roller 3a and the second gap between the blade body 4 and the second guide roller 3b, the coating layer cutting tool 1A can be removed from the coated wire 9 by moving the coating layer cutting tool 1A relative to the coated wire 9 in a direction parallel to the first axis AX1. In this case, the time required for removal can be shortened compared to when the coating layer cutting tool 1A is removed from the coated wire 9 by moving the coating layer cutting tool 1A relative to the coated wire 9 in the first direction DR1 or the second direction DR2.

[0033] In the example shown in Fig. 4, the coating layer cutting tool 1A includes a first base 11 (more specifically, a plate-like body 111) that supports the first guide roller 3a and the second guide roller 3b, and a second base 12 that supports the toothed roller and the blade body 4. The first base 11 may be formed of a single component, or may be formed by an assembly of multiple components. The second base 12 may be formed of a single component, or may be formed by an assembly of multiple components.

[0034] In the example shown in Fig. 4, the gap change mechanism 6 has a threaded rod 60 that moves the second base 12 relative to the first base 11. The gap change mechanism 6 may have an operation knob 61 that operates the threaded rod 60. When the operation knob 61 is operated by an operator, the threaded rod 60 advances or retreats along the longitudinal direction of the threaded rod 60. In the example shown in Fig. 4, when the second base 12 moves relative to the first base 11, the first gap between the toothed roller 2 and the first guide roller 3a and the second gap between the blade body 4 and the second guide roller 3b are simultaneously changed by the same amount.

[0035] 4, the second base 12 attached to the threaded rod 60 is movable together with the threaded rod 60 in a direction parallel to the third direction DR3. Furthermore, the first base 11 (more specifically, the first block 112) is formed with a female screw portion 62 that screws onto the threaded rod 60. Alternatively, the first base 11 attached to the threaded rod 60 may be configured to be movable together with the threaded rod 60 in a direction parallel to the third direction DR3, and the second base 12 may be formed with a female screw portion 62 that screws onto the threaded rod 60.

[0036] One of the first base 11 and the second base 12 may have a guide hole (more specifically, an oval guide hole extending in a direction parallel to the third direction DR3), and the other of the first base 11 and the second base 12 may have a guide pin that is movable along the guide hole. In the example shown in FIG. 6, the first base 11 (more specifically, the plate-like body 111) has a guide hole 11h, and the second base 12 has a guide pin 12p. The guide hole 11h and the guide pin 12p facilitate relative movement of the second base 12 with respect to the first base 11.

[0037] In the example shown in FIG. 6, the first base 11 includes a plate-like body 111 and a first block 112. The plate-like body 111 and the first block 112 are made of a plastic.

[0038] In the example shown in FIG. 6, the plate-shaped body 111 includes a first plate portion 111a disposed on one side of the first guide roller 3a and the second guide roller, a second plate portion 111b disposed on the other side of the first guide roller 3a and the second guide roller, and a connecting plate portion 111c connecting the first plate portion 111a and the second plate portion 111b. As shown in FIG. 7, the first guide roller 3a and the second guide roller 3b are sandwiched between the first plate portion 111a and the second plate portion 111b. The length of the second plate portion 111b in the direction along the third direction DR3 is shorter than the length of the first plate portion 111a in the third direction DR3. More specifically, the end of the first plate portion 111a on the fourth direction DR4 side is located closer to the third direction DR3 than the end of the first guide roller 3a on the fourth direction DR4 side. Since the gap between the first guide roller 3a and the toothed roller 2 is not covered by the second plate portion 111b, it is easy to take out the coated wire 9 from the gap.

[0039] 4, the plate-like body 111 of the first base 11 rotatably supports the first guide roller 3a via a first shaft S1 and rotatably supports the second guide roller 3b via a second shaft S2. The first block 112 of the first base 11 has a female screw portion 62 that screws onto the threaded rod 60. The first block 112 is fixed to the plate-like body 111 via a bolt B.

[0040] 4, the second base 12 has a first support 121 that supports the toothed roller 2, a second support 123 (more specifically, a guide block 7 described below) that supports the blade body 4, and a connecting member 125 (more specifically, a connecting plate) that connects the first support 121 and the second support 123. Because the first support 121 and the second support 123 are connected by the connecting member 125, the first support 121 that supports the toothed roller 2 and the second support 123 that supports the blade body 4 can be moved integrally relative to the multiple guide rollers 3.

[0041] As illustrated in FIG. 6, a handle 14 that can be held by an operator may be attached to one of the first base 11 and the second base 12. In the example illustrated in FIG. 6, the handle 14 is attached to the first base 11. When the coating layer cutting tool 1A has the handle 14, the operator can smoothly perform the cutting operation of the coating layer 93 while holding the handle 14. In addition, the operator can carry the coating layer cutting tool 1A by grasping the handle 14. In the example illustrated in FIG. 6, the handle 14 has an overall C-shape. In addition, an opening is formed between the handle 14 and the first base 11 so that the operator can insert all four fingers at once.

[0042] (Guide Block 7) In the example shown in Fig. 3, the coating layer cutting tool 1A includes a guide block 7 disposed opposite the second guide roller 3b. In the example shown in Fig. 1, the coated wire 9 fed in the first direction DR1 by the plurality of teeth T of the toothed roller 2 is sandwiched between the second guide roller 3b and the guide block 7 and guided by both the second guide roller 3b and the guide block 7. Therefore, the second guide roller 3b and the guide block 7 prevent the coated wire 9 from moving in an unintended direction, and thus prevent the coated wire 9 from meandering.

[0043] 3, the guide block 7 has a guide surface 71 that guides the movement of the covered wire 9 in the first direction DR1. In the example shown in FIG. 3, the guide surface 71 is disposed opposite the second guide roller 3b. More specifically, an imaginary plane PL1 that passes through the third axis AX3, which is the rotation axis of the second guide roller 3b, and is perpendicular to the first direction DR1 intersects the guide block 7 (more specifically, the guide surface 71 of the guide block 7) (in other words, the imaginary plane PL1 intersects the guide block 7).

[0044] 3, an imaginary plane IM formed by virtually extending the guide surface 71 in the second direction DR2 crosses some of the teeth T of the toothed roller 2 (in other words, the imaginary plane IM intersects some of the teeth T). Such a positional relationship between the imaginary plane IM and the teeth T allows the teeth T to suitably apply a propulsive force to the covered wire 9 in the first direction DR1.

[0045] In the example shown in Fig. 8, the guide surface 71 extends along the first direction DR1. The guide surface 71 is configured as an arc-shaped curved surface. More specifically, the guide surface 71 has an arc-shaped cross section perpendicular to the first direction DR1. Because the guide surface 71 is an arc-shaped curved surface, meandering of the covered wire 9 moving in the first direction DR1 is more effectively suppressed.

[0046] 8, an opening 71h is formed in the guide surface 71. The blade 4 is disposed across the opening 71h, and a portion of the blade 4 protrudes from the opening 71h in the third direction DR3. The entire blade 4 may be removable from the guide block 7 through the opening 71h.

[0047] In the example shown in FIG. 3, the blade 4 is attached to the guide block 7 via an attachment member 48. The attachment member 48 may have a first part 48a that supports the blade 4 and a second part 48b that is supported by the guide block 7. In the example shown in FIG. 8, after the second part 48b is detached from the first part 48a, the first part 48a and the blade 4 can be removed from the guide block 7.

[0048] (blade body 4) In the example shown in Fig. 1, the blade body 4 is a non-rotating blade body (in other words, a non-rotating blade). When the blade body 4 is a non-rotating blade that does not rotate, the resistance force applied from the blade body 4 to the coating layer 93 in the second direction DR2 is greater than when the blade body 4 is a rotary blade. In the example shown in Fig. 1, a strong propulsive force is applied to the covered wire 9 from the toothed roller 2, and the covered wire 9 moves in the first direction DR1 against the resistance force.

[0049] 3, the blade body 4 has a blade portion 41 and a guide plate 43. Additionally, the blade body 4 may have a protrusion 45.

[0050] 3, the blade portion 41 has a cutting edge 41c that cuts the coating layer 93. The blade portion 41 extends along the third direction DR3. The cutting edge 41c also extends along the third direction DR3.

[0051] As illustrated in Fig. 3, the guide plate 43 is connected to an end 41e of the blade portion 41 on the third direction DR3 side. The guide plate 43 guides the movement of the coating layer 93 cut by the cutting edge 41c of the blade body 4. In the example illustrated in Fig. 3, the guide plate 43 extends along a plane perpendicular to the third direction DR3. As illustrated in Fig. 9, the guide plate 43 and the blade portion 41 may be connected in a T-shape when viewed in the first direction DR1.

[0052] As illustrated in FIG. 3, the protrusion 45 is provided at the end of the guide plate 43 on the second direction DR2 side. The protrusion 45 protrudes further in the second direction DR2 than the cutting edge 41c. As illustrated in FIG. 17, the protrusion 45 is inserted from the end of the covered wire 9 into the space inside the covering layer 93. Before cutting of the covering layer 93 of the covered wire 9 begins, the end of the covering layer 93 on the first direction DR1 side is sandwiched between the protrusion 45 and the guide block 7. This prevents the end of the covered wire 9 from moving loose when cutting begins.

[0053] 3, the thickness of the protrusion 45 becomes thinner in the second direction DR2. The end of the protrusion 45 on the second direction DR2 side may be pointed.

[0054] As illustrated in Fig. 10, the blade body 4 may have, in addition to the blade portion 41 and the guide plate 43, a second blade portion 42 having a second cutting edge 42c, and a second guide plate 44. In the example shown in Fig. 10, the second blade portion 42 is disposed symmetrically to the blade portion 41 with respect to an imaginary plane (hereinafter referred to as "second imaginary plane PL2") passing through the center of the blade body 4. Furthermore, the second guide plate 44 is disposed symmetrically to the guide plate 43 with respect to the second imaginary plane PL2. In this case, if the blade portion 41, the guide plate 43, etc. are damaged, the blade body 4 can be turned over and reused.

[0055] (Toothed roller 2) The toothed roller 2 is rotatable about a first axis AX1. In the example shown in Fig. 1, the toothed roller 2 rotates about the first axis AX1 in a first rotation direction R1 to feed the covered wire 9 in a first direction DR1.

[0056] Each of the multiple teeth T formed on the outer circumferential edge of the toothed roller 2 has a shape that catches on the coating layer 93 when the toothed roller 2 rotates in a first rotational direction R1, but does not catch on the coating layer 93 when the toothed roller 2 rotates in a second rotational direction opposite to the first rotational direction R1. In the example shown in FIG. 3, in a cross section perpendicular to the first axis AX1, each of the multiple teeth T has a long side LA, a short side LB, and an apex angle TA formed by the long side LA and the short side LB. Furthermore, for each of the multiple teeth T, the short side LB is arranged to precede the long side LA in the first rotational direction R1. In the example shown in FIG. 3, the angle between the long side LA and the short side LB is less than 90 degrees.

[0057] (Relationship between the first guide roller 3a and the second guide roller 3b) 11, an imaginary plane including the entire second axis AX2, which is the rotation axis of the first guide roller 3a, and the entire third axis AX3, which is the rotation axis of the second guide roller 3b (hereinafter referred to as the "third imaginary plane PL3") is parallel to the first direction DR1. Alternatively, as illustrated in FIG. 12, the third imaginary plane PL3 may be slightly inclined with respect to the first direction DR1.

[0058] 11, the coating layer guide portion of the second guide roller 3b is retracted toward the third direction DR3 compared to the coating layer guide portion of the first guide roller 3a (see the positional relationship between the dashed-dotted line LN1 and the dashed-dotted line LN2). Since the second guide roller 3b is retracted somewhat toward the third direction DR3 compared to the first guide roller 3a, excessive frictional force is prevented from acting between the coating layer 93, which tends to spread outward when cut by the blade body 4, and the second guide roller 3b.

[0059] In order to retract the coating layer guide portion of the second guide roller 3b toward the third direction DR3 compared to the coating layer guide portion of the first guide roller 3a, the outer diameter of the second guide roller 3b may be smaller than the outer diameter of the first guide roller 3a (see FIG. 11). The outer diameter of the second guide roller 3b may be smaller than the outer diameter of the first guide roller 3a by several mm (for example, about 1 mm).

[0060] Alternatively, as illustrated in Fig. 12, the position of the third axis AX3 in the direction along the third direction DR3 may be set closer to the third direction DR3 than the position of the second axis AX2 in the direction along the third direction DR3 in order to retract the coating layer guide portion of the second guide roller 3b toward the third direction DR3 compared to the coating layer guide portion of the first guide roller 3a (see the positional relationship between the dashed-dotted line LN3 and the dashed-dotted line LN4). In the example illustrated in Fig. 12, the outer diameter of the second guide roller 3b is equal to the outer diameter of the first guide roller 3a.

[0061] As illustrated in Figure 11 or 12, when viewed in a direction along the first axis AX1, the triangle formed by connecting the first axis AX1, the second axis AX2, and the third axis AX3 may be an approximately right-angled triangle, with the corner at which the second axis AX2 is located being an approximately right angle.

[0062] (First guide roller 3a) In the example shown in FIG. 11, the first guide roller 3a is rotatable about a first shaft S1 disposed along the second axis AX2. The first guide roller 3a is, for example, an hourglass-shaped roller. More specifically, as shown in FIG. 13, the first guide roller 3a is a tapered roller having two tapered surfaces TP1 and TP2 that define an annular valley portion 31a with which the covered wire 9 comes into contact. The diameter of the first guide roller 3a gradually decreases from each of the ends of the first guide roller 3a toward the center of the first guide roller 3a. Even more specifically, as shown in FIG. 14, in a cross section including the entire second axis AX2, the outer peripheral surface of the first guide roller 3a has a substantially V-shape. In the example shown in Figure 14, in a cross section including the entire second axis AX2, the outer surface of the first guide roller 3a has a first line segment LM1 that approaches the second axis AX2 as it moves from one end of the first guide roller 3a toward the center of the first guide roller 3a, and a second line segment LM2 that approaches the second axis AX2 as it moves from the other end of the first guide roller 3a toward the center of the first guide roller 3a.

[0063] When the first guide roller 3a is an hourglass roller, the covered wire 9 is less likely to meander in the direction along the second axis AX2 when the covered wire 9 moves in the first direction DR1. Furthermore, when the first guide roller 3a is an hourglass roller, the first guide roller 3a can suitably guide each of a plurality of types of covered wires 9 having different outer diameters.

[0064] 11, an imaginary plane (hereinafter referred to as "fourth imaginary plane PL4") that passes through the first axis AX1, which is the rotation axis of the toothed roller 2, and is perpendicular to the first direction DR1 crosses the first guide roller 3a (in other words, the fourth imaginary plane PL4 intersects with the first guide roller 3a). In addition, the fourth imaginary plane PL4 crosses the first shaft S1 (in other words, the fourth imaginary plane PL4 intersects with the first shaft S1).

[0065] (Second guide roller 3b) In the example shown in FIG. 11, the second guide roller 3b is rotatable about a second shaft S2 disposed along the third axis AX3. The second guide roller 3b is, for example, an hourglass-shaped roller. More specifically, as shown in FIG. 13, the second guide roller 3b is a tapered roller having two tapered surfaces TP3 and TP4 that define an annular valley portion 31b with which the covered wire 9 comes into contact. The diameter of the second guide roller 3b gradually decreases from each of the ends of the second guide roller 3b toward the center of the second guide roller 3b. Even more specifically, as shown in FIG. 14, in a cross section including the entire third axis AX3, the outer peripheral surface of the second guide roller 3b has a substantially V-shape. In the example shown in Figure 14, in a cross section including the entire third axis AX3, the outer surface of the second guide roller 3b has a third line segment LM3 that approaches the third axis AX3 as it moves from one end of the second guide roller 3b toward the center of the second guide roller 3b, and a fourth line segment LM4 that approaches the third axis AX3 as it moves from the other end of the second guide roller 3b toward the center of the second guide roller 3b.

[0066] When the second guide roller 3b is an hourglass roller, the covered wire 9 is less likely to meander in the direction along the third axis AX3 when the covered wire 9 moves in the first direction DR1. Furthermore, when the second guide roller 3b is an hourglass roller, the second guide roller 3b can suitably guide each of a plurality of types of covered wires 9 having different outer diameters.

[0067] 11, the second guide roller 3b is disposed opposite the blade body 4. In the example shown in Fig. 11, an imaginary plane (hereinafter referred to as "fifth imaginary plane PL5") that passes through the end of the cutting edge 41c on the second direction DR2 side and is perpendicular to the first direction DR1 crosses the second guide roller 3b (in other words, the fifth imaginary plane PL5 intersects with the second guide roller 3b).

[0068] (Connection 55) 13, the coating layer cutting tool 1A has a connection part 55 to which a tool (for example, a manual tool or a power tool) that applies a driving force to the toothed roller 2 is detachably connected. FIG. 15 shows a state in which a manual tool 8 that applies a driving force to the toothed roller 2 is connected to the connection part 55 (not shown in FIG. 15). In the example shown in FIG. 15, the manual tool 8 is a torque wrench that applies torque in only one direction to the connection part 55 (more specifically, the connection part 55 that functions as the force input part 51).

[0069] 13 and 15, a tool (e.g., a manual tool or a power tool) that applies a driving force to the toothed roller 2 is provided separately from the coating layer cutting tool 1A. Alternatively, an operating unit (e.g., an operating lever having a ratchet mechanism) that applies a driving force to the toothed roller 2 may be incorporated into the coating layer cutting tool 1A. In other words, the coating layer cutting tool 1A may have an operating unit that applies a driving force to the toothed roller 2.

[0070] (Second embodiment) A coating layer cutting method according to the second embodiment will be described with reference to Fig. 1 to Fig. 18. Fig. 16 is a schematic front view showing a state after the placement step has been performed. Fig. 17 is a schematic front view showing a state after the clamping step has been performed. Fig. 18 is a flowchart showing an example of the coating layer cutting method according to the second embodiment.

[0071] The coating layer cutting method of the second embodiment may be performed using the coating layer cutting tool 1A of the first embodiment, or may be performed using another coating layer cutting tool. Since the coating layer cutting tool 1A of the first embodiment has already been described, repeated description of the coating layer cutting tool 1A will be omitted.

[0072] In a first step ST1, the covered wire 9 is placed between a toothed roller 2 rotatable about a first axis AX1 and a first guide roller 3a. The first step ST1 is a placement step. Figure 16 shows the state after the placement step has been performed.

[0073] The toothed roller 2, the first guide roller 3a, and the coated wire 9 have already been described in the first embodiment, so a repeated description of these components will be omitted.

[0074] In the second step ST2, the covered wire 9 is clamped between the toothed roller 2 and a plurality of guide rollers 3 including a first guide roller 3a and a second guide roller 3b. The second step ST2 is a clamping process. The clamping process includes bringing the teeth T of the toothed roller 2 into contact with the covered wire 9, bringing the outer peripheral surface of the first guide roller 3a into contact with the covered wire 9, and bringing the outer peripheral surface of the second guide roller 3b into contact with the covered wire 9.

[0075] 16 and 17 , the clamping step (second step ST2) is performed by operating the gap change mechanism 6 (more specifically, the operation knob 61 of the gap change mechanism 6). More specifically, the clamping step (second step ST2) includes using the gap change mechanism 6 to simultaneously reduce a first gap between the toothed roller 2 and the first guide roller 3a and a second gap between the blade body 4 and the second guide roller 3b. By reducing the first gap and the second gap, the toothed roller 2 and the multiple guide rollers 3 clamp the covered wire 9.

[0076] The second guide roller 3b and the gap change mechanism 6 have already been described in the first embodiment, so a repeated description of these configurations will be omitted.

[0077] In the third step ST3, the blade body 4 is brought into contact with the end of the coating layer 93 on the first direction DR1 side. The third step ST3 is a contacting step. Figure 17 shows the state after the contacting step has been performed.

[0078] The third step ST3 (contact step) may be performed before the clamping step (second step ST2), after the clamping step (second step ST2), or in parallel with the clamping step (second step ST2).

[0079] As illustrated in FIG. 17, the third step ST3 (contact step) may include inserting the protruding portion 45 of the blade body 4 into the space inside the coating layer 93 from the end of the coated wire 9.

[0080] The blade body 4 has already been described in the first embodiment, so a repeated description of the blade body 4 will be omitted.

[0081] In the fourth step ST4, the coating layer 93 of the coated wire 9 is cut. The fourth step ST4 is a cutting step. Fig. 1 shows the cutting step being performed.

[0082] 1, the cutting step (fourth step ST4) includes rotating a toothed roller 2 having a plurality of teeth T about a first axis AX1 in a first rotation direction R1, so that the plurality of teeth T in contact with the covered wire 9 push the covered wire 9 in the first direction DR1. By rotating the toothed roller 2 in the first rotation direction R1 while the covered wire 9 is sandwiched between the toothed roller 2 and the first guide roller 3a, a propulsive force in the first direction DR1 is effectively applied to the covered wire 9.

[0083] The rotation of the toothed roller 2 in the first rotation direction R1 is performed by inputting a driving force to the force input unit 51. The driving force may be input to the force input unit 51 using a tool connected to the connection unit 55 of the coating layer cutting tool 1 (for example, a manual tool such as a wrench as illustrated in FIG. 15 or a power tool such as a power drill), or may be input by operating an operation unit provided in the coating layer cutting tool 1.

[0084] 1, the cutting step (fourth step ST4) includes the blade 4 (more specifically, the cutting edge 41c) contacting the coating layer 93 cutting the coating layer 93 along the longitudinal direction of the coated wire 9 as the coated wire 9 is pushed in the first direction DR1. As illustrated in FIG. 2, when the coating layer 93 of the coated wire 9 includes a first coating layer 93a and a second coating layer 93b, the cutting step (fourth step ST4) includes simultaneously cutting the first coating layer 93a and the second coating layer 93b along the longitudinal direction of the coated wire 9.

[0085] In the example shown in FIG. 1, the toothed roller 2 effectively applies a driving force to the covered wire 9, so that the blade 4 smoothly cuts the covering layer 93.

[0086] 1, the cutting step (fourth step ST4) includes guiding the movement of the covered wire 9 in the first direction DR1 by a first guide roller 3a arranged opposite the toothed roller 2 and a second guide roller 3b arranged on the first direction DR1 side of the first guide roller 3a. The covered wire 9 is guided by the multiple guide rollers 3 arranged along the first direction DR1, thereby preventing the covered wire 9 from moving in an unintended direction. Also, meandering of the covered wire 9 is prevented.

[0087] The cutting step (fourth step ST4) may include guiding the covered wire 9 in the first direction DR1 by the guide surface 71 (see FIG. 8) of the guide block 7 and the second guide roller 3b in a region closer to the second direction DR2 than the blade body 4. The covered wire 9 is fed toward the blade body 4 while being sandwiched between the guide surface 71 and the second guide roller 3b, thereby preventing the covered wire 9 from rolling around the central axis of the covered wire 9.

[0088] 8, the guide surface 71 extends along the first direction DR1 and is a concave curved surface recessed in the fourth direction DR4 (more specifically, an arc-shaped surface recessed in the fourth direction DR4). Furthermore, as illustrated in FIG. 13, the second guide roller 3b is an hourglass-shaped roller. Therefore, regardless of the outer diameter of the covered wire 9, the guide surface 71 of the guide block 7 and the second guide roller 3b can appropriately guide the covered wire 9 in the first direction DR1.

[0089] The cutting step (fourth step ST4) may include guiding the cut coating layer 93 in the first direction DR1 by the guide plates 43 (see FIG. 9 ) of the blade body 4 on both sides of the blade portion 41. The guide plates 43 illustrated in FIG. 3 prevent the coating layer 93 from meandering in the third direction DR3, and the guide surfaces 71 prevent the coating layer 93 from meandering in the fourth direction DR4. In addition, the blade portion 41 and the guide plates 43 prevent the coated wire 9 from rolling around the central axis of the coated wire 9.

[0090] The cutting step (fourth step ST4) may include guiding the covered wire 9 in the first direction DR1 with the guide surface 71 of the guide block 7 in a region closer to the blade body 4 in the first direction DR1.

[0091] By performing the cutting step (fourth step ST4), the blade body 4 forms a slit SL in the coating layer 93 (see FIG. 2). The length of the slit SL formed in the coating layer 93 by the blade body 4 is, for example, 50 cm or more, 100 cm or more, 150 cm or more, or 200 cm or more.

[0092] In a fifth step ST5, the covered wire 9 is released from the clamping between the toothed roller 2 and the plurality of guide rollers 3. The fifth step ST5 is a clamp-releasing step.

[0093] The clamping release step (fifth step ST5) is performed by operating the gap change mechanism 6 (more specifically, the operation knob 61 of the gap change mechanism 6). The clamping release step (fifth step ST5) may include simultaneously increasing the first gap between the toothed roller 2 and the first guide roller 3a and the second gap between the blade body 4 and the second guide roller 3b using the gap change mechanism 6. By increasing the first gap and the second gap, the clamping of the covered wire 9 between the toothed roller 2 and the multiple guide rollers 3 is released.

[0094] In a sixth step ST6, the coating layer cutting tool 1 is removed from the coated wire 9. The sixth step ST6 is a removing step.

[0095] 5 , the removing step (sixth step ST6) includes removing the coating layer cutting tool 1 from the coated wire 9 by moving the coating layer cutting tool 1 relative to the coated wire 9 in a direction parallel to the first axis AX1. Alternatively, the removing step (sixth step ST6) may include removing the coating layer cutting tool 1 from the coated wire 9 by moving the coating layer cutting tool 1 relative to the coated wire 9 in the first direction DR1 or the second direction DR2.

[0096] The present invention is not limited to the above-described embodiments or modifications, and it is clear that each embodiment or modification can be appropriately modified or changed within the scope of the technical concept of the present invention. Furthermore, any component used in each embodiment or modification can be combined with another embodiment or modification, and any component can be omitted from each embodiment or modification. [Industrial Applicability]

[0097] The coating layer cutting tool and coating layer cutting method of the present invention can effectively apply a driving force to the coated wire and suppress meandering of the coated wire. This allows the coating layer of the coated wire to be smoothly cut along the longitudinal direction of the coated wire. Therefore, it is useful for contractors who use coating layer cutting tools and manufacturers who manufacture coating layer cutting tools. [Explanation of symbols]

[0098] 1, 1A... coating layer cutting tool, 2... toothed roller, 3... guide roller, 3a... first guide roller, 3b... second guide roller, 4... blade body, 6... gap change mechanism, 7... guide block, 8... hand tool, 9... coated wire, 11... first base, 11h... guide hole, 12... second base, 12p... guide pin, 14... handle, 31a, 31b... valley portion, 41... blade portion, 41c... cutting edge, 41e... end portion, 42... second blade portion, 42c... second cutting edge, 43... Guide plate, 44...second guide plate, 45...protrusion, 48...mounting member, 48a...first part, 48b...second part, 50...force transmission member, 51...force input portion, 51h...hole portion, 55...connection portion, 60...threaded rod, 61...operation knob, 62...female thread portion, 71...guide surface, 71h...opening, 91...wire material, 91t...outer skin, 93...coating layer, 93a...first coating layer, 93b...second coating layer, 111...plate-shaped body, 111a...first plate portion, 111b...second plate portion, 11 1c...connecting plate portion, 112...first block, 121...first support, 123...second support, 125...connecting member, AX1...first axis, AX2...second axis, AX3...third axis, B...bolt, D1...outer diameter, DR1...first direction, DR2...second direction, DR3...third direction, DR4...fourth direction, IM...imaginary surface, LA...long side, LB...short side, LM1...first line segment, LM2...second line segment, LM3...third line segment, LN1, LN2, LN3, LN4...single-dot chain Line, PL1...imaginary plane, PL2...second imaginary plane, PL3...third imaginary plane, PL4...fourth imaginary plane, PL5...fifth imaginary plane, R1...first rotation direction, S1...first shaft, S2...second shaft, SL...slit, ST1...first step, ST2...second step, ST3...third step, ST4...fourth step, ST5...fifth step, ST6...sixth step, T...tooth, TA...vertex angle, TP1, TP2, TP3, TP4...tapered surface

Claims

1. a toothed roller rotatable about a first axis and having a plurality of teeth for feeding a coated wire having a wire and a coating layer covering the wire in a first direction; a first guide roller disposed opposite the toothed roller, configured to guide movement of the covered wire in the first direction, and rotatable about a second axis parallel to the first axis; a second guide roller disposed on the first direction side of the first guide roller, configured to guide movement of the covered wire in the first direction, and rotatable about a third axis parallel to the second axis; a blade disposed on the first direction side of the toothed roller and configured to cut the coating layer of the coated wire fed in the first direction by the toothed roller along the longitudinal direction of the coated wire; Equipped with Coating layer cutting tool.

2. The cutting device further includes a gap changing mechanism that simultaneously changes a first gap between the toothed roller and the first guide roller and a second gap between the blade and the second guide roller. The coating layer cutting tool according to claim 1 .

3. a first base supporting the first guide roller and the second guide roller; a second base supporting the toothed roller and the blade; Further comprising: The distance changing mechanism has a threaded rod that moves the second base relative to the first base. The coating layer cutting tool according to claim 2 .

4. a guide block disposed opposite the second guide roller; the guide block has a guide surface that guides movement of the covered wire in the first direction, When a direction opposite to the first direction is defined as a second direction, a virtual plane formed by virtually extending the guide surface in the second direction is configured to cross a part of the plurality of teeth. The coating layer cutting tool according to any one of claims 1 to 3.

5. The blade is a non-rotating blade. The coating layer cutting tool according to any one of claims 1 to 3.

6. When a direction opposite to the first direction is defined as a second direction and a direction from the toothed roller toward the first guide roller is defined as a third direction, the blade body is a blade portion having a cutting edge for cutting the coating layer and extending along the third direction; a guide plate connected to an end of the blade portion on the third direction side and configured to guide movement of the coating layer cut by the blade edge; a protruding portion provided at an end portion of the guide plate on the second direction side and protruding further toward the second direction side than the cutting edge; have The coating layer cutting tool according to claim 5 .

7. When a direction from the toothed roller toward the first guide roller is defined as a third direction, the coating layer guide portion of the second guide roller is retracted toward the third direction compared to the coating layer guide portion of the first guide roller. The coating layer cutting tool according to any one of claims 1 to 3.

8. The toothed roller further includes a connection portion to which a device for applying a driving force to the toothed roller is detachably connected. The coating layer cutting tool according to any one of claims 1 to 3.

9. Each of the first guide roller and the second guide roller is a tapered roller having two tapered surfaces that define an annular valley portion with which the covered wire comes into contact. The coating layer cutting tool according to any one of claims 1 to 3.

10. a step of clamping a coated wire having a wire rod and a coating layer covering the wire rod between a toothed roller rotatable around a first axis and a plurality of guide rollers including a first guide roller and a second guide roller; bringing a blade into contact with an end of the coating layer on the first direction side; cutting the coating layer; Equipped with The step of cutting the coating layer includes: rotating the toothed roller having a plurality of teeth about the first axis, so that the plurality of teeth contacting the covered wire push the covered wire in the first direction; the blade body contacting the coating layer cuts the coating layer along the longitudinal direction of the coated wire in response to the coated wire being pushed in the first direction; the first guide roller disposed opposite the toothed roller and the second guide roller disposed on the first direction side of the first guide roller guide the movement of the covered wire in the first direction; Contains Covering layer cutting method.

Images