Electric wire termination processing device

Abstract

To provide an electric wire terminal processing device capable of improving quality of a braid folded-back portion.SOLUTION: An electric wire terminal processing device is configured to: position a first member 11 at an end portion outer periphery of a sheath 5; rotate RA and revolve RB a rotary brush 15 so as to expand a braid 4; retreat the rotary brush, and then, receive a tip of a wire core 3 in a pipe member 18, and perform centering; terminal-cut the expanded braid 4, by using an annular inner blade 11a of the first member and an annular outer blade 12a of a second member 12; and move the pipe member 18 so as to fold back the terminal-cut braid 4.SELECTED DRAWING: Figure 2

Description

Technical Field

[0004] , ,

[0001] The present invention relates to a terminal processing device for an electric wire used for terminal processing of, for example, a cable for high-speed communication.

Background Art

[0002] Among the types of electromagnetic shield type electric wires used in high-speed communication cables and the like, there is a structure in which the periphery of a wire core having a conductor coated with an insulator is surrounded by a braid and the outside thereof is covered with a sheath. When performing terminal processing of this type of electric wire, the sheath at the tip of the electric wire is removed, the exposed braid is trimmed and folded back so as to overlap the outer periphery of the end of the sheath, and a terminal is crimped to the conductor of the wire core, and an earth side terminal is crimped to the portion covered with the braid. In addition, a metal sleeve may be fitted in advance to the outer periphery of the sheath at the position where the braid is covered.

Prior Art Documents

Patent Documents

[0003] By the way, as an example of automation of terminal processing of a braid, for example, the technique described in Patent Document 1 is known. According to the technique described in this Patent Document 1, first, a sheath is removed, a rolling body (roller) is pressed against the exposed braid to open the braid. The opened braid is raised by an annular member, and an outer blade body is applied to the raised braid. In that state, the inner blade body is moved in the axial direction to cut the tip of the braid (the outer peripheral side of the expanded braid). Next, the reversing member is moved in the axial direction to reverse the braid and fold it back onto the end of the sheath. By sequentially performing the above series of steps, terminal processing of the braid before terminal crimping is performed.

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, when an electric wire has multiple cores, the space between the cores becomes recessed, which can result in the outer circumference of the braid not being perfectly circular. In such cases, even if the rolling element is pressed against the braid as in the conventional example above, it may not be possible to sufficiently open the braid in the recessed areas. In other words, even when the rolling element is pressed against the braid, the braid may open without the weaving in the recessed areas being sufficiently undone, and if the weaving is undone after cutting, the ends of the braid may not be aligned. As a result, when the braid is folded back, the shape of the braid may change significantly, leading to unstable quality in the folded portion of the braid and potentially resulting in a decrease in the quality of the product after terminal crimping. Furthermore, shielded electric wires, in which metal foil is wrapped around multiple core wires, are sometimes used. In the case of such electric wires, if the metal foil is wound spirally so as to overlap from the base end to the tip end, when the rolling element is pressed against the wire, the ends of the braid may get caught in the overlapping parts of the metal foil, creating a problem where the braid cannot be folded back.

[0005] This invention has been made in view of the above circumstances, and its purpose is to provide a wire terminal processing device that can improve the quality of the folded portion of the braid. [Means for solving the problem]

[0006] To achieve the aforementioned objectives, the wire terminal processing apparatus according to the present invention has the following features.

[0007] A wire terminal processing device for processing the exposed braid at the end of an electric wire in which the wire core is surrounded by a braid, An annular first member having an inner diameter through which the end of the sheath can be inserted, and an annular inner blade provided on the outer peripheral edge on the wire tip side, A rotating brush is provided which is capable of rotating on its own axis within a plane including the central axis of the electric wire and revolving in the circumferential direction of the electric wire, is positioned on the outer circumference side of the exposed braid, rotates on its own axis and revolves in the circumferential direction of the electric wire such that the direction of movement of the outer circumference end at the point of contact with the braid is from the tip side of the electric wire to the base side of the electric wire, and expands the exposed braid; The device comprises an annular second member having a larger inner diameter than the annular inner blade of the first member, and having an annular outer blade provided on the inner peripheral edge of the opening on the wire base end side facing the annular inner blade, When cutting the end of the braid, the first member is positioned on the outer circumference of the end of the sheath, the rotating brush expands so that the exposed braid covers the positioned first member, and the second member is moved from the wire tip side to the wire base side so that the tip side of the braid is sandwiched and cut between the annular outer blade and the annular inner blade. A device for processing the ends of electric wires. [Effects of the Invention]

[0008] According to the present invention, since the braid is expanded by a rotating brush that rotates on its own axis and revolves around it, the braid can be uniformly expanded into a shape close to a folded state without being affected by the outer shape of the braid. Furthermore, since the ends of the braid are cut in this state, when the braid is folded back afterward, the change in the shape of the braid is reduced, and the ends of the folded braid are more easily aligned. Therefore, the quality of the folded portion of the braid is improved, and when a terminal is crimped onto the folded portion of the braid, the braid does not become unevenly distributed to specific locations in the circumferential direction, resulting in good conductivity. In addition, in shielded wires, it is possible to suppress the problem of the ends of the braid getting caught in the overlapping portion of the metal foil and being unable to fold it back.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by referring to the attached drawings and reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments"). [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic diagram showing the state of a terminal processing apparatus according to an embodiment of the present invention before operation. [Figure 2] Figure 2 is a schematic diagram illustrating the process of lifting the exposed braided fabric using a terminal processing device. [Figure 3]Figure 3 is a schematic diagram illustrating the process of cutting the ends of an expanded braided fabric using a terminal processing device. [Figure 4] Figure 4 is a schematic diagram illustrating the state in which the braided fabric, after being cut at the ends by a terminal processing device, is being folded back. [Figure 5] Figure 5 is a schematic diagram showing the terminal processing device components returned to their initial positions after the operation is complete. [Modes for carrying out the invention]

[0011] Specific embodiments of the present invention will be described below with reference to the figures.

[0012] Figure 1 is a schematic diagram showing the state of a terminal processing apparatus according to an embodiment of the present invention before operation. As shown in Figure 1, the target of the terminal processing device 10 according to this embodiment is the tip of an electric wire 1 in which one or more wire cores 3 are surrounded by a braid 4, and the outside of the braid 4 is covered with a sheath 5. When processing the terminal of this electric wire 1, the sheath 5 at the tip of the electric wire 1 is removed, and the terminal processing part 1A of the electric wire 1, in which the braid 4 beyond the end of the sheath 5 is exposed, is used to process the exposed braid 4. A metal sleeve 7 is fitted in advance to the outer circumference of the end of the sheath 5, and the braid 4 is folded back so as to overlap the outer circumference of the sleeve 7.

[0013] Figure 2 is a schematic diagram showing the state in which the exposed braid 4 is being lifted by the terminal processing device 10, Figure 3 is a schematic diagram showing the state in which the expanded braid 4 is being cut at the end by the terminal processing device 10, Figure 4 is a schematic diagram showing the state in which the cut braid 4 is being folded back by the terminal processing device 10, and Figure 5 is a schematic diagram showing the state in which the components of the terminal processing device 10 have been returned to their initial positions after the work is completed. In each figure, arrow A indicates the wire tip side and arrow B indicates the wire base end side.

[0014] As shown in FIGS. 1 to 5, the terminal processing device 10 includes a wire chuck 9, a first member 11, a second member 12, a rotary brush 15, a pipe member 18, and a control unit (not shown). The control unit is configured to control the driving of various elements such as the wire chuck 9, the first member 11, the second member 12, the rotary brush 15, and the pipe member 18.

[0015] The wire chuck 9 holds the wire 1 at a position that does not interfere with the processing of the wire 1 to be processed. The wire 1 is inserted into the terminal processing device 10 in a state where the sheath 5 within a predetermined length range from the tip is removed and the braid 4 is exposed, and is held by the wire chuck 9. Note that the terminal processing device 10 of the present embodiment may be provided together with a sheath removal device for removing the sheath 5, and the terminal processing of the wire 1 by these devices may be automatically and continuously performed. In this case, for example, transfer means for clamping the wire 1 processed by the sheath removal device and delivering it to the wire chuck 9 may be provided. Alternatively, the wire chuck 9 may have a function as this transfer means.

[0016] As shown in FIG. 1, the first member 11 is configured as an annular body having an inner diameter d1 through which a sleeve 7 fitted to the end of the sheath 5 can be inserted, and has an annular inner blade 11a on the outer peripheral edge on the wire tip side A. As shown in FIG. 2, this first member 11 is moved axially in the direction of arrow S1 in FIG. 1 in advance before the braid 4 is expanded, and is positioned on the outer periphery of the end of the sheath 5.

[0017] Before use, as shown in FIG. 1, the rotary brush 15 is retracted to a position (retracted position) that does not interfere with the processing. The rotary brush 15 is a rotating member provided with a brush 15a on the outer peripheral portion. When expanding the braid 4, as shown in FIG. 2, the outer peripheral end of the rotating brush 15a is brought into contact with the outer periphery of the braid 4 by being positioned on the outer peripheral side of the exposed braid 4 of the terminal processing portion 1A of the wire.

[0018] Next, the rotating brush 15 rotates on its own axis within the plane containing the central axis of the electric wire 1 and revolves in the circumferential direction of the electric wire 1. At this time, first, while rotating the outer peripheral end of the brush 15a at the contact point with the braid 4 in the direction from the base end side B of the electric wire to the tip end side A of the electric wire, it is revolved in the circumferential direction of the electric wire 1 to untangle the braided braid 4. Then, it is reversed so that the moving direction of the outer peripheral end of the brush 15a at the contact point with the braid 4 becomes the direction from the tip end side A of the electric wire to the base end side B of the electric wire (the direction RA shown in FIG. 2), and the braid 4 is scraped up. The revolving direction RB can be either. Thus, when the rotating brush 15 rotates on its own axis and revolves, the exposed braid 4 is scraped up from the tip end side A of the electric wire toward the base end side B of the electric wire and expanded so as to cover the first member 11 positioned on the outer periphery of the end of the sheath 5. FIG. 3 shows the expanded braid 4a. The rotating brush 15 is adapted to expand the braid 4 by appropriately moving in the axial direction and the revolving radius direction as necessary, and does not necessarily rotate on its own axis and revolve at a fixed position.

[0019] As shown in FIG. 1, the second member 12 is configured as an annular body having an inner diameter d2 larger than the annular inner blade 11a of the first member 11, and has an annular outer blade 12a on the inner peripheral edge of the opening on the base end side B of the electric wire facing the annular inner blade 11a. As shown in FIG. 3, the second member 12 is moved from the tip end side A of the electric wire to the base end side B of the electric wire (movement in the direction indicated by the arrow S3 in FIG. 3), so that the annular outer blade 12a meshes with the annular inner blade 11a of the first member 11, whereby the tip end side of the expanded braid 4a is sandwiched between the annular outer blade 12a and the annular inner blade 11a and end-cut.

[0020] The pipe member 18 is a pipe-shaped (hollow) member for folding back the cut-end braided 4a. As shown in Figure 2, the inner diameter d3 of the open end B on the wire base end side is set to be smaller than the inner diameter d1 of the first member 11 and larger than the outer diameter d0 of the sleeve 7. Also, the outer diameter d4 of the wire base end B of the pipe member 18 is set to be smaller than the inner diameter d2 of the second member 12. After the end of the braided 4 is cut, the pipe member 18 moves (movement in the direction of arrow S5 in Figure 4) so ​​that the tip of the wire 1 is inserted into it, as shown in Figure 4, thereby folding back the cut-end braided 4 so that it covers the sleeve 7 at the end of the sheath 5. At this folding stage, the first member 11 is moved back slightly from the cutting position to the initial position to ensure that the braided 4 is reliably folded back from the exposed base end portion (movement of arrow S4 in Figure 4).

[0021] Furthermore, as shown in Figure 2, the pipe member 18 is formed such that its inner diameter gradually decreases in stages from the open end B on the wire base end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire base end end side toward the wire tip end side toward the wire base end end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire base end end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire tip end end side toward the wire base

[0022] Specifically, as shown in Figure 3, a first inner diameter portion 18a is provided inside the pipe member 18 on the wire end side A, at the position where the tip of the wire core 3 reaches when the end of the wire is inserted with the braid 4 expanded and the wire core 3 exposed. This first inner diameter portion 18a is formed continuously up to the position where the tip of the wire core 3 reaches when the end of the wire is inserted after the end of the braid 4 has been cut and the braid 4 is folded back, as shown in Figure 4.

[0023] Furthermore, as shown in Figure 4, a second inner diameter portion 18b is provided inside the pipe member 18 at the base end B of the electric wire, at the position where the sleeve 7 (end of the sheath 5) is inserted when the tip of the electric wire after the end of the braid 4 has been cut is inserted. This second inner diameter portion 18b folds back so that the expanded braid 4a (4) covers the sleeve 7 (end of the sheath) in accordance with the insertion operation of the sleeve 7 (end of the sheath 5). The second inner diameter portion 18b is larger in diameter than the first inner diameter portion 18a, and a tapered inner diameter portion 18c is provided between the first inner diameter portion 18a and the second inner diameter portion 18b to guide the tip of the inserted electric wire core 3 from the larger diameter second inner diameter portion 18b to the smaller diameter first inner diameter portion 18a when the tip of the electric wire with the braid 4 expanded and the wire core 3 exposed is inserted.

[0024] Next, the operation flow will be explained as a control operation by the control unit. In the initial state before work begins, as shown in Figure 1, the unprocessed electric wire 1 is set in the electric wire chuck 9. A sleeve 7 is attached to the outer circumference of the end of the sheath 5 of the electric wire 1. The first member 11, the second member 12, the rotating brush 15, and the pipe member 18 are initially positioned away from the electric wire 1.

[0025] The control unit controls the driving of the first member 11, the second member 12, the rotating brush 15, and the pipe member 18. In the first step, as shown in Figure 2, the first member 11 is moved (movement in the direction of arrow S1 in Figure 1) to position it on the outer circumference of the end of the sheath 5. It is desirable that the axial positioning position be set beyond the sleeve 7, as shown in Figure 2. As will be described later, the first member 11 acts as a stopper that determines the degree of expansion of the braid 4.

[0026] In the next second step, the control unit moves and positions the rotating brush 15 as shown in Figure 2, and then rotates (arrow RA) and revolves (arrow RB) the rotating brush 15 to expand the braid 4. At this time, as described above, the position of the rotating brush 15 may be moved in the axial direction or the orbital radius direction as needed.

[0027] In the following third step, after the rotating brush 15 has been retracted, the control unit moves the pipe member 18 as shown by arrow S2 in Figure 3, so that the tip of the wire core 3 is housed in the first inner diameter portion 18a inside the pipe member 18. This allows the tip of the electric wire to be centered. Then, the control unit moves the second member 12 as shown by arrow S3 in Figure 3, so that the annular inner blade 11a of the first member 11 and the annular outer blade 12a of the second member 12 engage, and the expanded braid 4a(4) is cut at the end.

[0028] In the following fourth step, the control unit moves the second member 12 back slightly from the cut position towards the initial position, as indicated by arrow S4 in Figure 4, and then moves the pipe member 18 as indicated by arrow S5, folding it back while pushing down the cut end of the braided 4a.

[0029] After the braid 4 is folded back, the first member 11, the second member 12, and the pipe member 18 are returned to their initial positions as shown by arrow S6 in Figure 5. At this time, the inner diameter d1 of the first member 11 is larger than the inner diameter of the second inner diameter portion 18b of the pipe member 18 so that the tip of the folded braid 4b(4) does not come into contact with the first member 11. In addition, it is preferable to provide a guide surface such as a chamfer on the inner circumference of the wire tip side A of the first member 11 as needed.

[0030] As described above, according to the terminal processing device 10 of this embodiment, the braided fabric 4 can be expanded by the rotating brush 15 so that it covers the first member 11, thereby creating a shape that is close to a folded state. At this time, the rotating brush 15 rotates on its own axis and revolves around the braided fabric 4 to scrape it up, so unlike when rolling elements (rollers) are used as in the conventional method, the braided fabric 4 can be expanded uniformly without being affected by the outer shape of the braided fabric 4. In other words, by scraping up the braided fabric 4 with the rotating brush 15 that rotates on its own axis and revolves around the braided fabric 4, the braiding of the braided fabric 4 can be reliably undone and the braided fabric 4 can be expanded in a folded state, regardless of the number of wire cores 3, even if there are indentations between the wire cores on the outer circumference of the braided fabric 4.

[0031] Then, in a subsequent process, the expanded braid 4a(4) is cut at the end. When the braid 4 is then folded back, the shape of the braid 4 changes less, and the ends of the folded braid 4b(4) are more easily aligned. Therefore, when a terminal is crimped to the folded portion 4a of the braid, the braid does not become unevenly distributed at specific points in the circumferential direction, and good conductivity can be obtained.

[0032] Furthermore, by positioning the first member 11 on the outer circumference of the end of the sheath 5 before the braid 4 is expanded, the first member 11 acts as a stopper when the braid 4 is expanded. This prevents the braid 4 from expanding too much, which would make it impossible to cut in a later process. Also, because the first member 11 is positioned on the outer circumference of the end of the sheath 5 before the end of the braid 4 is cut, unnecessary interference between the braid 4 and the first member 11 can be avoided during end cutting, allowing for accurate end cutting of the braid 4.

[0033] Furthermore, according to the terminal processing device 10 of this embodiment, by moving the pipe member 18, the braided 4a(4) that has been cut at the end in the expanded state can be folded back and overlapped uniformly in the circumferential direction to the end of the sleeve 7 (the outer circumference of the end of the sheath 5). At this time, since the length of the braided 4 has been cut to the same length in the previous terminal cutting process, the braided 4 will not be unevenly distributed in the circumferential direction when folded back.

[0034] Furthermore, the first inner diameter portion 18a of the pipe member 18 prevents misalignment of the wire tip when the braid 4 is cut, enabling accurate cutting of the braid 4 while reproducibly positioning the wire tip. In addition, although the first member 11 needs to be removed from the outer circumference of the end of the sheath 5 after the braid 4 is cut, the braid 4 can be folded back using the pipe member 18 before the first member 11 can be removed from the wire. Therefore, there is no need to make the first member 11 a split structure such as a half-split structure, eliminating problems with braid cutting at the split portion.

[0035] Furthermore, in this embodiment, since a metal sleeve 7 is fitted to the outer circumference of the end of the sheath 5, when crimping the ground terminal in a later process, the braided 4b(4) folded and overlapped on the outer circumference of the sleeve 7 can be firmly crimped and fixed between the sleeve 7 and the terminal. Note that the sleeve 7 is not necessarily required. In that case, the braided 4 will be folded and overlapped directly on the outer circumference of the end of the sheath 5.

[0036] Furthermore, as in this embodiment, by controlling the drive of the first member 11, the second member 12, the rotating brush 15, and the pipe member 18 in a coordinated manner using the control unit, the entire series of processes of expanding the braid 4, cutting the ends, and folding them back can be performed automatically in one location.

[0037] In the above embodiment, the case where the electric wire 1 is fixed and the first member 11, second member 12, rotating brush 15, pipe member 18, etc. move relative to the electric wire 1 was described. However, the above operation is relative to the electric wire 1 and also includes cases where the electric wire itself moves.

[0038] Herein, the features of the wire terminal processing apparatus according to the embodiments of the present invention described above are briefly summarized and listed below in [1] to [5]. [1] A wire terminal processing device (10) for processing the exposed braid (4) after the sheath (5) at the tip of a wire (1) in which the wire core (3) is surrounded by a braid (4), An annular first member (11) having an inner diameter (d1) through which the end of the sheath (5) can be inserted, and an annular inner blade (11a) provided on the outer peripheral edge of the wire tip side (A), A rotating brush (15) is provided, which is capable of rotating on its own axis within a plane including the central axis of the electric wire (1) and revolving in the circumferential direction of the electric wire, positioned on the outer circumference side of the exposed braid (4), and rotates on its own axis in a direction such that the direction of movement of the outer circumference end at the point of contact with the braid (4) is from the tip side of the electric wire to the base side of the electric wire, and revolves in the circumferential direction of the electric wire (1), thereby spreading open the exposed braid (4), The device comprises an annular second member (12) having a larger inner diameter than the annular inner blade (11a) of the first member (11), and having an annular outer blade (12a) provided on the inner peripheral edge of the opening on the wire base end side facing the annular inner blade (11a), When cutting the end of the braid (4), the first member (11) is positioned on the outer circumference of the end of the sheath (5), the rotating brush (15) expands so that the exposed braid (4) covers the positioned first member (11), and the second member (12) is moved from the wire tip side to the wire base side, so that the tip side of the braid (4) is sandwiched and cut between the annular outer blade (12a) and the annular inner blade (11a). A device for processing the ends of electric wires.

[0039] According to the terminal processing device (10) with the configuration described in [1] above, the braid (4) can be expanded by the rotating brush (15) so that it overlaps the first member (11), thereby creating a shape that is close to a folded state. In this case, the rotating brush (15) is rotated on its own axis and revolves around the braid (4) to scrape it up, so unlike when rolling elements (rollers) are used as in the conventional method, the braid (4) can be expanded uniformly without being affected by the outer shape of the braid (4). In other words, by scraping up the braid (4) with the rotating brush (15) that rotates on its own axis and revolves around the braid (4), the weaving of the braid (4) can be reliably undone and the braid (4) can be expanded in a folded state, regardless of the number of wire cores (3) and even if there are grooves between the wire cores on the outer circumference of the braid (4). Furthermore, since the rotating brush (15) scrapes up the braid (4), in the case of shielded wires, unlike when rolling elements are used, the problem of the braid (4) getting caught between the overlaps of metal foil wrapped around the wire core (3) and preventing the braid from being folded back can be suppressed. Furthermore, in a subsequent process, the expanded braids (4a, 4) are cut at the ends. This reduces the change in the shape of the braids when they are folded back, making it easier for the ends of the folded braids (4b, 4) to align. Therefore, when crimping terminals to the folded portion (4a) of the braids (4), the braids (4) do not become unevenly distributed at specific points in the circumferential direction, resulting in good conductivity. Furthermore, by positioning the first member (11) on the outer circumference of the end of the sheath (5) before the braid (4) is expanded, the first member (11) acts as a stopper when the braid (4) is expanded. This prevents the braid (4) from expanding too much, making it impossible to cut in a later process. In addition, because the first member (11) is positioned on the outer circumference of the end of the sheath (5) before the end of the braid (4) is cut, unnecessary interference between the braid (4) and the first member (11) can be avoided when cutting the end, allowing for a precise end cut of the braid (4).

[0040] [2] The pipe member (18) into which the tip of the electric wire (1) is inserted, and the braided (4) whose end has been cut is folded back, The pipe member (18) has a pipe-like shape in which the inner diameter (d3) of the open end on the wire base end side (B) is smaller than the inner diameter (d1) of the first member (11) and larger than the outer diameter (d0) of the sheath (5), and the outer diameter (d4) on the wire base end side (B) is smaller than the inner diameter (d2) of the second member (12). The wire terminal processing device (10) described above [1].

[0041] According to the terminal processing device (10) with the configuration described in [2] above, by moving the pipe member (18), the braids (4a, 4) that have been cut at the end in an expanded state can be folded back and overlapped uniformly in the circumferential direction around the outer circumference of the end of the sheath (5). At this time, since the length of the braids (4) has been cut to the same length in the previous terminal cutting process, the braids (4) will not be unevenly distributed in the circumferential direction when folded.

[0042] [3] The pipe member (18) is At the position where the tip of the wire core (3) reaches when the tip of the electric wire (1) is inserted, there is a first inner diameter portion (18a) that centers the tip of the electric wire (1), When the tip of the electric wire (1) is inserted, at the position where the end of the sheath (5) is inserted, the braid (4a, 4) is folded back to cover the end of the sheath (5) in accordance with the insertion operation of the end of the sheath (5), and the second inner diameter portion (18b), which is larger in diameter than the first inner diameter portion (18a), A tapered inner diameter portion (18c) is formed between the first inner diameter portion (18a) and the second inner diameter portion (18b), and its inner diameter gradually decreases from the inner diameter of the second inner diameter portion (18b) to the inner diameter of the first inner diameter portion (18a). The wire terminal processing device (10) described in [2] above.

[0043] According to the terminal processing device (10) with the configuration described in [3] above, the first inner diameter portion (18a) of the pipe member (18) prevents misalignment of the tip of the electric wire (1) when the terminal of the braid (4) is cut, thus enabling accurate terminal cutting of the braid (4) while reproducibly positioning the tip of the electric wire (1). Furthermore, although the first member (11) needs to be removed from the outer circumference of the end of the sheath (5) after the terminal of the braid (4) is cut, the first member (11) can be removed from the electric wire (1) after folding the braid (4) back with the pipe member (18). Therefore, there is no need to make the first member (11) a split structure such as a half-split structure, and problems in braid cutting at the split portion can be eliminated.

[0044] [4] A metal sleeve (7) is fitted around the outer circumference of the end of the sheath (5), the folded braids (4b, 4) are superimposed on its outer circumference. The inner diameter (d1) of the first member (11) is set to a size through which the sleeve (7) can be inserted. The inner diameter (d3) of the open end (B) of the wire base end (B) of the pipe member (18) is set to be larger than the outer diameter (d0) of the sleeve (7). The wire terminal processing device (10) described in [2] above.

[0045] According to the terminal processing device (10) with the configuration described in [4] above, a metal sleeve (7) is fitted to the outer circumference of the end of the sheath (5). Therefore, when crimping the ground terminal in a later process, the braided material (4b, 4) that is folded and overlapped around the outer circumference of the sleeve (7) can be firmly crimped and fixed between the sleeve (7) and the terminal.

[0046] [5] The device further comprises a control unit that controls the driving of the first member (11), the second member (12), the rotating brush (15), and the pipe member (18), The control unit, In the first step, the first member (11) is moved to position it on the outer circumference of the end of the sheath (5), In the second step, the rotating brush (15) is moved to position it, and the rotating brush (15) is rotated and revolved to expand the braid (4). In the third step, after the rotating brush (15) is retracted, the second member (12) is moved so that the annular inner blade (11a) of the first member (11) and the annular outer blade (12a) of the second member (12) cut the ends of the expanded braid (4a, 4). In the fourth step, the pipe member (18) is moved to fold back the braid (4a, 4). The wire terminal processing device (10) described in [2] above.

[0047] According to the terminal processing device (10) with the configuration described in [5] above, the entire process of expanding the braid (4), cutting the ends, and folding them back can be performed automatically in one place.

[0048] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate. In addition, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited, as long as they can achieve the present invention. [Explanation of symbols]

[0049] 1 electric wire 3 wire core 4 braid 4a Expanded braid 4b Folded part of the braid 5 Sheath 10 Terminal processing equipment 11. First Member 11a Annular inner blade 12 Second Member 12a Annular outer blade 15 Rotating Brushes 15a Brush 18 Pipe members 18a First inner diameter portion 18b 2nd inner diameter part 18c tapered inner diameter A Wire end B Wire base end side

Claims

1. A wire terminal processing device for processing the exposed braid at the end of an electric wire in which the wire core is surrounded by a braid, An annular first member having an inner diameter through which the end of the sheath can be inserted, and an annular inner blade provided on the outer peripheral edge on the wire tip side, A rotating brush is provided which is capable of rotating on its own axis within a plane including the central axis of the electric wire and revolving in the circumferential direction of the electric wire, is positioned on the outer circumference side of the exposed braid, rotates on its own axis and revolves in the circumferential direction of the electric wire such that the direction of movement of the outer circumference end at the point of contact with the braid is from the tip side of the electric wire to the base side of the electric wire, and expands the exposed braid; The device comprises an annular second member having a larger inner diameter than the annular inner blade of the first member, and having an annular outer blade provided on the inner peripheral edge of the opening on the wire base end side facing the annular inner blade, When cutting the end of the braid, the first member is positioned on the outer circumference of the end of the sheath, the rotating brush expands so that the exposed braid covers the positioned first member, and the second member is moved from the wire tip side to the wire base side so that the tip side of the braid is sandwiched and cut between the annular outer blade and the annular inner blade. A device for processing the ends of electric wires.

2. The pipe member further comprises a pipe member into which the tip of the electric wire is inserted, and the braided end from which the wire has been cut is folded back. The pipe member has a pipe-like shape in which the inner diameter of the open end on the wire base end side is smaller than the inner diameter of the first member and larger than the outer diameter of the sheath, and the outer diameter on the wire base end side is smaller than the inner diameter of the second member. The wire terminal processing apparatus according to claim 1.

3. The aforementioned pipe member is A first inner diameter portion that centers the tip of the wire at the position where the tip of the wire core reaches when the tip of the wire is inserted, When the tip of the electric wire is inserted, at the position where the end of the sheath is inserted, a second inner diameter portion, which is larger in diameter than the first inner diameter portion, is provided, in accordance with the insertion operation of the end of the sheath, the braid is folded back so as to cover the end of the sheath. It has a tapered inner diameter portion formed between the first inner diameter portion and the second inner diameter portion, the inner diameter of which gradually decreases from the inner diameter of the second inner diameter portion to the inner diameter of the first inner diameter portion, The wire terminal processing apparatus according to claim 2.

4. A metal sleeve is fitted to the outer circumference of the end of the sheath, with the folded braid overlapping its outer circumference. The inner diameter of the first member is set to a size that allows the sleeve to be inserted. The inner diameter of the open end of the pipe member on the wire base end side is set to be larger than the outer diameter of the sleeve. The wire terminal processing apparatus according to claim 2.

5. The system further includes a control unit that controls the driving of the first member, the second member, the rotating brush, and the pipe member. The control unit, In the first step, the first member is moved and positioned on the outer circumference of the end of the sheath, In the second step, the rotating brush is moved to position it, and the rotating brush is rotated and revolved to expand the braid. In the third step, after the rotating brush is retracted, the second member is moved so that the annular inner blade of the first member and the annular outer blade of the second member cut the end of the expanded braid. In the fourth step, the pipe member is moved and the braid is folded back. The wire terminal processing apparatus according to claim 2.

Images