Wrapping apparatus

Abstract

To provide a wrapping apparatus which can easily attach a covering member to a covering object.SOLUTION: A wrapping apparatus 1 wraps roll tape R around an electric wire bundle 23 provided with an axis line L. The wrapping apparatus 1 comprises a link base plate 60 moving forward and backward in a cross direction X intersecting with a direction of the axis line L of the electric wire bundle 23. Further, the wrapping apparatus 1 comprises a driven head part 70 sandwiching the roll tape R in a space with the outer circumferential face of the electric wire bundle 23 and attaching the same. Further, the wrapping apparatus 1 comprises a link mechanism 80 rotating the driven head part 70 around the axis line L of the electric wire bundle 23 with the forward-backward movement of the link base plate 60.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a winding device.

Background Art

[0002] Conventionally, a winding device is known that attaches a tape as a covering member to an electric wire constituting a wire harness while winding the tape (see, for example, Patent Document 1). The tape winding device (winding device) described in Patent Document 1 includes a tape drawing machine that draws out a roll tape (covering member) and a tape winding machine that winds and attaches the drawn roll tape to a wire bundle (object to be covered) in the circumferential direction.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described winding device, the roll tape attached to the wire bundle is cut by a cutter blade. After the roll tape is cut, the wire bundle is removed from the winding device. By the way, a cutting cost is required when cutting the roll tape. For this reason, the end portion of the roll tape as the cutting cost is not attached to the wire bundle, and the end portion of the roll tape that is not attached remains on the wire bundle removed from the winding device. In this case, it is necessary to manually attach the end portion of the roll tape that is not attached to the wire bundle each time, and it is difficult to efficiently manufacture a wire harness.

[0005] An object of the present invention is to provide a winding device capable of easily attaching a covering member to an object to be covered.

Means for Solving the Problems

[0006] In order to solve the above problems and achieve the object, a winding device is a winding device for winding a covering member around a covering object having an axis extending in a predetermined direction, and includes a base portion that moves forward and backward in an intersecting direction intersecting the axis, a driven head portion that sandwiches and attaches the covering member between the outer peripheral surface of the covering object, and a rotating portion that rotates the driven head portion around the axis as the base portion moves forward and backward.

Advantages of the Invention

[0007] According to the present invention, it is possible to provide a winding device capable of easily attaching a covering member to a covering object.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0009] The winding device 1 will be described below. The winding device 1 forms a part of a wire harness manufacturing apparatus 100 for manufacturing a wire harness WH to be routed in a vehicle or the like. FIG. 1 is an overall perspective view of the wire harness manufacturing apparatus 100 including the winding device 1 according to the present embodiment. In the figure, the axial direction of the electric wire 20 (object to be coated), which forms a part of the wire harness WH, is denoted as the "vertical direction Z", one side of the vertical direction Z is denoted as the "upper side Z1", and the other side is denoted as the "lower side Z2". Also, one of the intersecting directions intersecting the vertical direction Z is denoted as the "front-rear direction X", and the other is denoted as the "width direction Y". Also, one side of the front-rear direction X is denoted as the "advancing side X1", and the other side is denoted as the "retreating side X2". Also, one side of the width direction Y is denoted as the "left side Y1", and the other side is denoted as the "right side Y2". The vertical direction Z, the front-rear direction X, and the width direction Y are orthogonal to each other. Note that the definitions of these directions are for convenience of explanation only and do not limit the respective directions during the manufacture or use of the winding device 1 and the wire harness manufacturing apparatus 100.

[0010] The winding device 1 is a device that winds a roll tape R as a covering member around the electric wire 20 during the manufacture of the wire harness WH, and includes a main body portion 10 that supports the electric wire 20 and a slide portion 30 that is slidably connected to the main body portion 10 in the vertical direction Z. First, the main body portion 10 and the wire harness WH will be described. As shown in FIG. 1, the main body portion 10 is formed by combining a plurality of metal plates or the like. The main body portion 10 is provided with a support plate portion 11 at its lower end. The support plate portion 11 extends in the front-rear direction X and the width direction Y and is formed in a rectangular plate shape, and is fixed to an installation surface (not shown) by a fastening member such as a bolt. A support column portion 12 is installed at the edge portion on the left side Y1 of the upper surface of the support plate portion 11. The support column portion 12 extends in the vertical direction Z and the front-rear direction X and is formed in a substantially rectangular parallelepiped shape, and rises upward from the upper surface of the support plate portion 11 to the upper side Z1. A rod-shaped slide shaft 14 is installed on the side wall surface 13 facing the right side Y2 of the support column portion 12. The slide shaft 14 is fixed to the central portion in the front-rear direction X of the side wall surface 13 and extends in the vertical direction Z.

[0011] On the advancing side X1 of the support portion 12, a fixing portion 15 for fixing the electric wire 20 during the manufacture of the wire harness WH is installed. The fixing portion 15 includes a first terminal holder 16 located on the upper side Z1 and a second terminal holder 17 located on the lower side Z2. The first terminal holder 16 extends in the width direction Y and the vertical direction Z and is formed in a box shape. The second terminal holder 17 protrudes from the side wall surface 13 to the right side Y2 and is formed in a substantially cubic shape. The electric wire 20 fixed to the fixing portion 15 is, for example, a coated electric wire composed of a core wire and a coating that covers the core wire in the circumferential direction. Two electric wires 20 are prepared, for example, for the positive electrode side and the negative electrode side, are adjacent to each other with a gap in the width direction Y, and extend in the vertical direction Z. At the upper end of each electric wire 20, a first terminal 21 is attached. The first terminal 21 is fixed to the lower end of the first terminal holder 16. At the lower end of each electric wire 20, a second terminal 22 that groups the lower ends together is attached. The second terminal 22 is fixed to the upper surface of the second terminal holder 17. The electric wire 20 fixed to the fixing portion 15 in this way extends in the vertical direction Z while maintaining a predetermined tension.

[0012] Next, the slide portion 30 will be described. As shown in FIG. 1, the slide portion 30 includes a connection portion 31 connected to the slide shaft 14. The connection portion 31 protrudes from the side wall surface 13 of the support portion 12 to the right side Y2 and is formed in a substantially rectangular box shape. A vertical plate portion 33 is attached to the wall surface 32 on the right side Y2 of the connection portion 31. The vertical plate portion 33 extends in the vertical direction Z and the front-rear direction X and is formed in a plate shape. A horizontal plate portion 35 protruding to the right side Y2 is formed on the plate surface 34 on the right side Y2 of the vertical plate portion 33. The horizontal plate portion 35 is orthogonal to the plate surface 34 and extends in the width direction Y and the front-rear direction X and is formed in a plate shape. A notch portion 36 that opens to the advancing side X1 is formed at the end of the horizontal plate portion 35 on the advancing side X1. The notch portion 36 surrounds the left side Y1, the right side Y2, and the retreating side X2 of the electric wire 20, thereby restricting the displacement of the electric wire 20 in the width direction Y and the displacement of the electric wire 20 to the retreating side X2. A plate-shaped installation base 37 along the upper edge is attached to the upper edge of the notch portion 36.

[0013] The mounting base 37 is rotatable in the circumferential direction of the electric wire 20 by a drive mechanism (not shown). A tape winding machine 40 is installed on the upper surface of the mounting base 37. The tape winding machine 40 holds a roll tape R as a covering member to be wound around the electric wire 20, winds the drawn-out roll tape R around the electric wire 20, and cuts it. The tape winding machine 40 includes a rotating shaft 41 that rises upward Z1 from the mounting base 37. A roll tape R configured to be wound around the axis of the rotating shaft 41 is attached to the rotating shaft 41. The roll tape R is an adhesive tape made of an insulating material such as resin, for example, and is rotatably supported around the axis of the rotating shaft 41. A tape holder 42 that surrounds the roll tape R in the circumferential direction is attached around the roll tape R. The roll tape R is held by the tape holder 42, and the drop-off of the roll tape R is prevented. The end of the roll tape R held by the tape holder 42 is chucked by a drawing-out machine (not shown) and drawn out from the tape holder 42.

[0014] The drawn-out roll tape R rotates in the circumferential direction of the electric wire 20 as the tape winding machine 40 rotates with the rotation of the mounting base 37, and is attached to the outer peripheral surfaces of the two electric wires 20 while rotating. By attaching the roll tape R, the electric wires 20 are brought closer to each other in the radial direction, and an electric wire bundle 23 (see the electric wires, FIGS. 3(A), (B), FIGS. 4(A), (B)) is formed. The roll tape R attached to the electric wire 20 is cut by a cutter blade (not shown) and separated from the roll tape R in the tape holder 42. At this time, since a cutting margin is required for the roll tape R, an end portion of the roll tape R having a length corresponding to the cutting margin remains in a state where it is not attached to the electric wire bundle 23. For this reason, an attachment unit 50 for attaching the end portion of the roll tape R to the electric wire bundle 23 is provided on the slide portion 30. The attachment unit 50 is installed on the upper surface of the horizontal plate portion 35 of the slide portion 30.

[0015] As shown in FIG. 2, the attachment unit 50 includes a bottom plate portion 51 that constitutes the lower end surface. The bottom plate portion 51 extends along the upper surface of the horizontal plate portion 35. On the right side Y2 portion of the upper surface of the bottom plate portion 51, a first standing wall 52 that rises upward in the Z1 direction and extends in the width direction Y is formed. A regulating shaft 53 extending in the front-rear direction X penetrates the plate surface of the first standing wall 52. A nut 53a is screwed onto the end portion of the regulating shaft 53 on the advancing side X1. The end surface of the nut 53a on the advancing side X1 and the end surface of the regulating shaft 53 on the advancing side X1 regulate the rotation of the following driven head portion 70 in the right direction a around the axis L of the wire bundle 23 in the initial state described later. At the end portion on the left side Y1 of the first standing wall 52, a second standing wall 54 that is continuous with the first standing wall 52 and extends in the retreating side X2 is formed, and on the wall surface facing the left side Y1 of the second standing wall 54, a third standing wall 55 that is continuous with the second standing wall 54 and extends in the left side Y1 is formed. A piston portion 56 as a driving portion is attached to the third standing wall 55.

[0016] The piston portion 56 includes a cylinder tube 57 that penetrates the third standing wall 55 and extends in the retreating side X2 from the wall surface of the third standing wall 55 on the retreating side X2. A piston (not shown) is accommodated in the cylinder tube 57. A piston rod 58 is integrally provided on the piston. The piston rod 58 is a drive shaft, has the front-rear direction X (intersection direction) as its axis, protrudes from the cylinder tube 57 in the advancing side X1, and extends in the advancing side X1. The piston rod 58 can move forward and backward in the front-rear direction X together with the piston. A link base plate 60 (base portion) is fixed to the end portion of the piston rod 58 on the advancing side X1. The link base plate 60 extends in the front-rear direction X and the width direction Y and is formed in a plate shape. The portion on the retreating side X2 and the left side Y1 of the link base plate 60 is cut out to form a notch 61 having an L shape in top view, and the end portion of the piston rod 58 on the advancing side X1 is fixed to the wall surface of this notch 61 facing the retreating side X2.

[0017] Due to this fixation, the link base plate 60 moves forward and backward in the longitudinal direction X together with the piston rod 58. A driven head portion 70 that is displaced as the link base plate 60 moves forward and backward is connected to the link base plate 60. The driven head portion 70 extends in the longitudinal direction X and the width direction Y and is formed in a plate shape. A recess 71 that is recessed toward the retraction side X2 is formed on the end face on the advancing side X1 of the driven head portion 70. The recess 71 is formed in a substantially U shape that opens toward the advancing side X1 when viewed from the vertical direction Z. A pasting body 72 that pastes the end portion of the roll tape R to the wire harness 23 by sandwiching the roll tape R between the inner wall surface of the recess 71 and the outer peripheral surface of the wire harness 23 is fixed. The pasting body 72 is formed in a substantially J shape when viewed from the vertical direction Z using a material such as an elastic resin.

[0018] The pasting body 72 includes a shape absorbing portion 73 (curved portion) that follows the outer peripheral shape of the wire harness 23, and a pressing portion 74 that extends toward the advancing side X1 continuously from one end portion of the shape absorbing portion 73. The inner surface of the shape absorbing portion 73 extends along the outer peripheral surface of the wire harness 23. The inner surface of the shape absorbing portion 73 is provided so as to be pressed radially inward against the outer peripheral surface of the wire harness 23, and the shape absorbing portion 73 elastically deforms while holding the wire harness 23 by this pressing. With this configuration, since the contact area between the pasting body 72 and the wire harness 23 can be ensured corresponding to wire harnesses 23 of various diameters, the wire harness 23 is reliably held.

[0019] The pressing portion 74 is continuous with the end portion on the left side Y1 of the shape absorbing portion 73 and extends toward the advancing side X1. The inner surface 74a of the pressing portion 74 can press the end portion of the roll tape R (not shown) that is not pasted to the wire harness 23 toward the outer surface of the wire harness 23, and the end portion of the roll tape R is pasted to the outer peripheral surface of the wire harness 23 by this pressing. Note that the end portion of the roll tape R that is not pasted is a portion that protrudes continuously from the roll tape R pasted to the outer peripheral surface of the wire harness 23. And the link base plate 60 and the driven head portion 70 formed in this way are connected by a link mechanism 80.

[0020] The link mechanism 80 is a mechanism that converts the forward and backward movement of the link base plate 60 into the rotation of the driven head portion 70, and constitutes the rotating portion of the present embodiment that rotates the driven head portion 70 around the axis L as the link base plate 60 moves forward and backward. As shown in FIG. 3(A), the link mechanism 80 includes a first link 81. The first link 81 includes a link groove 82 provided in the link base plate 60 and a first protrusion 85 provided in the driven head portion 70. The link groove 82 is provided on the lower surface of the link base plate 60 and opens downward to the lower side Z2. The link groove 82 includes a first inclined groove 83 inclined so as to be located on the left side Y1 as it goes from the advancing side X1 to the retracting side X2. Further, the link groove 82 is continuous with the end portion of the first inclined groove 83 on the retracting side X2 and includes a second inclined groove 84 inclined so as to be located on the right side Y2 as it goes toward the retracting side X2. The first inclined groove 83 and the second inclined groove 84 make the link groove 82 substantially V-shaped when viewed from the vertical direction Z.

[0021] The first protrusion 85 is formed in a columnar shape extending in the vertical direction Z and protrudes upward to the upper side Z1 from the upper surface of the driven head portion 70. The position where the first protrusion 85 is formed is set at the corner portion on the retracting side X2 and the left side Y1 of the driven head portion 70. That is, the first protrusion 85 is disposed at a position spaced apart from the axis L to the left side Y1 (width direction Y) when the upper surface of the driven head portion 70 is viewed from the vertical direction Z. The first protrusion 85 is inserted into the link groove 82 from the lower side Z2 toward the upper side Z1 and is accommodated in the link groove 82. While being guided by the inner wall surfaces (83a, 84a) of the link groove 82, it can freely move in the link groove 82 toward the advancing side X1 or the retracting side X2. Further, the first protrusion 85 can also rotate around the axis L in the link groove 82 while being guided by the inner wall surfaces (83a, 84a) of the link groove 82.

[0022] The link mechanism 80 further includes an auxiliary link 86. The auxiliary link 86 supports the driven head portion 70, thereby stably maintaining the state in which the driven head portion 70 is connected to the link base plate 60. The auxiliary link 86 includes a pair of upper and lower second protrusions 87 provided on the link base plate 60, a support shaft 88 provided on the driven head portion 70, and a pair of upper and lower connection plates 89 connecting the second protrusions 87 and the support shaft 88. The pair of upper and lower second protrusions 87 protrude outward in the vertical direction Z from the upper and lower surfaces of the link base plate 60, respectively. The position where the second protrusion 87 is formed is set at a position adjacent to the second inclined groove 84 in the width direction Y on the link base plate 60 and at a position Y1 on the left side of the second inclined groove 84. The support shaft 88 is provided so as to penetrate the driven head portion 70 in the vertical direction Z and supports the driven head portion 70 so as to be rotatable about the axis. The position where the support shaft 88 is installed is set at a position adjacent to the shape absorbing portion 73 in the width direction Y on the driven head portion 70 and at a position Y2 on the right side of the shape absorbing portion 73.

[0023] The connection plates 89 are a pair of connection plates 89 arranged on the upper side Z1 of the link base plate 60 and the driven head portion 70 and connection plates 89 arranged on the lower side Z2 of the link base plate 60 and the driven head portion 70. Each connection plate 89 is formed in a flat plate shape facing the link base plate 60 and the driven head portion 70 in the vertical direction Z. One end portion 89a of the connection plate 89 is rotatably supported by the support shaft 88 and is rotatable about the axis of the support shaft 88. A guide groove 89c penetrating in the vertical direction Z and extending to the side with the other end portion 89b is formed in the plate surface of the connection plate 89. The second protrusion 87 is inserted and accommodated in the guide groove 89c in the vertical direction Z. By accommodating the second protrusion 87 in the guide groove 89c, the second protrusion 87 and the support shaft 88 are connected. Further, by this accommodation, the guide groove 89c extends from the side with the support shaft 88 toward the side with the second protrusion 87. The second protrusion 87 can be relatively approximated or separated from the support shaft 88 by being guided by the inner edge of the guide groove 89c.

[0024] Next, the operation of the winding device 1 will be described. First, as shown in FIG. 1, two electric wires 20 are fixed in a state of extending in the vertical direction Z with respect to the fixing portion 15 of the main body portion 10. Next, the end of the roll tape R accommodated in the tape holder 42 is chucked by a drawing machine (not shown) and drawn out by a predetermined amount. Next, the installation table 37 is rotated around the axis L. By this rotation, the tape winding machine 40 fixed to the installation table 37 rotates in the circumferential direction of the electric wire 20. By this rotation, the roll tape R is attached to the outer peripheral surface of the electric wire 20 while rotating. At this time, the two electric wires 20 are restricted from displacement in the width direction Y and the retreat side X2 by the notch portion 36, so that the roll tape R can be stably attached to the electric wire 20. The electric wires 20 to which the roll tape R is attached are respectively brought close to each other in the radial direction and bundled to form a single electric wire bundle 23. The axis L of the electric wire bundle 23 extends in the vertical direction Z which is a predetermined direction. Next, the roll tape R is cut by a cutter blade (not shown), so that the roll tape R constituting the electric wire bundle 23 and the roll tape R in the tape holder 42 are separated.

[0025] Note that in this state, as described above, an end portion of the roll tape R that is not attached to the outer peripheral surface of the wire harness 23 remains by the length of the cutting cost. Therefore, next, the end portion of the remaining roll tape R is attached to the outer peripheral surface of the wire harness 23. In the present embodiment, the step of attaching the end portion of the roll tape R that is not attached to the outer peripheral surface of the wire harness 23 is defined as the attaching step. First, by sliding the slide portion 30 along the slide shaft 14 in the vertical direction Z, the attaching body 72 of the attaching unit 50 and the end portion of the roll tape R are opposed to each other in the front-rear direction X. Then, by a driving unit (not shown), the entire attaching unit 50 is moved in the advancing side X1 until the driven head portion 70 abuts against the wire harness 23. This state is defined as the initial state in the attaching step. FIG. 3(A) shows the winding device 1 in the initial state of the attaching step. In the initial state, the end faces on the advancing side X1 of the link base plate 60 and the driven head portion 70 face the advancing side X1. And in the driven head portion 70, the attaching body 72 is pressed against the wire harness 23 toward the advancing side X1. In this pressed state, the displacement of the driven head portion 70 in the advancing side X1 is restricted except for the amount by which the wire harness 23 is slightly deflected in the advancing side X1. That is, the displacement of the driven head portion 70 in the advancing side X1 is almost restricted by the wire harness 23.

[0026] And although not shown, the end portion of the roll tape R is sandwiched between the inner surface 74a of the pressing portion 74 and the outer peripheral surface of the wire harness 23. Also, in the initial state, the end face on the retracting side X2 of the driven head portion 70 abuts against the end face on the advancing side X1 of the regulating shaft 53 and the end face on the advancing side X1 of the nut 53a. By this abutment, the rotation of the driven head portion 70 in the right direction a around the axis L of the wire harness 23 is restricted. Also, in the initial state, the first protrusion 85 of the first link 81 is located at the end portion on the advancing side X1 in the first inclined groove 83 of the link groove 82. Further, the connecting plate 89 of the auxiliary link 86 is inclined such that one end portion 89a is located on the advancing side X1 and the right side Y2 and the other end portion 89b is located on the retracting side X2 and the left side Y1 with respect to the front-rear direction X. And the second protrusion 87 of the auxiliary link 86 is located at the end portion on the side where the other end portion 89b is located in the guide groove 89c.

[0027] Next, the piston portion 56 is driven from the initial state. When the piston portion 56 is driven, the piston rod 58 moves to the advancing side X1 and enters the second state. FIG. 3(B) shows the winding device 1 in the second state of the pasting step. When changing from the initial state to the second state, due to the driving of the piston rod 58, the link base plate 60 is displaced to the advancing side X1 compared to the initial state. At this time, as described above, the displacement of the driven head portion 70 to the advancing side X1 is almost restricted by the wire bundle 23. Therefore, with the position of the entire driven head portion 70 hardly displaced to the advancing side X1, the first protrusion 85 of the driven head portion 70 is pressed toward the advancing side X1 by the inner wall surface 83a in the first inclined groove 83 of the link base plate 60 that moves to the advancing side X1.

[0028] Due to this pressing, a moment is generated in the driven head portion 70 in the right direction a about the axis L, and due to this moment, the driven head portion 70 rotates in the right direction a1 about the axis L while being pressed against the wire bundle 23. Then, as the link base plate 60 moves to the advancing side X1, the first protrusion 85 gradually positions to the left side Y1 while being guided by the inner wall surface 83a of the first inclined groove 83. Thereby, the interval in the width direction Y of the first protrusion 85 with respect to the axis L gradually widens. Due to this guidance, the driven head portion 70 rotates further in the right direction a. In the second state, the first protrusion 85 for which the guidance is completed is displaced so as to be positioned at the boundary portion between the first inclined groove 83 and the second inclined groove 84 within the link groove 82.

[0029] As the driven head portion 70 rotates as described above, the pasting body 72 slides in the circumferential direction along the outer peripheral surface of the wire bundle 23. Due to this sliding, the end portion of the roll tape R sandwiched between the inner surface 74a of the pressing portion 74 in the pasting body 72 and the outer peripheral surface of the wire bundle 23 is gradually pasted along the outer peripheral surface of the wire bundle 23. Also, at this time, as the connection plate 89 of the auxiliary link 86 rotates in the right direction a, the above inclination of the connection plate 89 becomes steep. And at this time, the position of the second protrusion 87 of the auxiliary link 86 changes within the guide groove 89c and approaches relatively to the support shaft 88 of the auxiliary link 86.

[0030] Next, from this second state, the piston portion 56 is further driven. When the piston portion 56 is driven, the piston rod 58 and the link base plate 60 move to the advancing side X1, and a third state is reached. FIG. 4(C) shows the winding device 1 in the third state during the pasting process. When changing from the second state to the third state, due to the driving of the piston rod 58, the link base plate 60 is displaced to the advancing side X1 compared to the second state. At this time, the first protrusion 85 of the driven head portion 70 is pressed toward the advancing side X1 by the boundary portion between the first inclined groove 83 and the second inclined groove 84. Due to this pressing, while being guided by the boundary portion, the first protrusion 85 rotates in the right direction a1 around the axis L, and due to this rotation, the driven head portion 70 rotates in the right direction a1 around the axis L.

[0031] As the driven head portion 70 rotates as described above, the attachment body 72 further slides in the circumferential direction along the outer peripheral surface of the wire bundle 23. Due to this sliding, the end portion of the roll tape R sandwiched between the inner surface 74a of the pressing portion 74 and the outer peripheral surface of the wire bundle 23 is further attached along the outer peripheral surface of the wire bundle 23. And due to the rotation of the driven head portion 70, the connection plate 89 of the auxiliary link 86 is inclined such that one end portion 89a is located on the retreating side X2 and the right side Y2, and the other end portion 89b is located on the advancing side X1 and the left side Y1 with respect to the front-rear direction X. And at this time, the position of the second protrusion 87 of the auxiliary link 86 changes within the guide groove 89c, and the relative distance from the support shaft 88 of the auxiliary link 86 becomes even closer.

[0032] Next, from this third state, the piston portion 56 is further driven. When the piston portion 56 is driven, the piston rod 58 moves to the advancing side X1, and a completion state is reached. FIG. 4(D) shows the winding device 1 in the completion state during the pasting process. When changing from the third state to the completion state, due to the driving of the piston rod 58, the link base plate 60 is displaced to the advancing side X1 compared to the third state. At this time, the first protrusion 85 of the driven head portion 70 is pressed toward the advancing side X1 by the inner wall surface 84a of the second inclined groove 84 of the link base plate 60 that moves to the advancing side X1.

[0033] Due to this pressing, the driven head portion 70 rotates further in the right direction a1 about the axis L. As the link base plate 60 moves in the advancing side X1, the first protrusion 85 is gradually positioned on the right side Y2 while being guided by the inner wall surface 84a of the second inclined groove 84. As a result, the interval in the width direction Y of the first protrusion 85 with respect to the axis L gradually decreases. By this guiding, the driven head portion 70 is pressed toward the right side Y2 where the wire bundle 23 is located. Then, as the driven head portion 70 rotates as described above, the attaching body 72 slides further in the circumferential direction along the outer peripheral surface of the wire bundle 23. By this sliding, the end portion of the roll tape R sandwiched between the inner surface 74a of the pressing portion 74 and the outer peripheral surface of the wire bundle 23 is entirely attached along the outer peripheral surface of the wire bundle 23. Also, as the driven head portion 70 is pressed toward the wire bundle 23 as described above, the end portion of the roll tape R is surely attached to the outer peripheral surface of the wire bundle 23. By this attachment, the attaching process is completed.

[0034] According to the above attaching process, as the link base plate 60 moves in the advancing side X1, the first protrusion 85 is guided from the first inclined groove 83 to the second inclined groove 84, so that the driven head portion 70 rotates in the right direction a about the axis L. Note that the amount of rotation of the driven head portion 70 can be appropriately changed by adjusting the positional relationship between the link base plate 60 and the driven head portion 70, the shape and size of the link groove 82, and the like. Here, for example, if the driven head portion 70 is set to be rotatable by more than 90° about the axis L compared to the initial state, it is more preferable because the end portion of the roll tape R not attached to the outer peripheral surface of the wire bundle 23 can be surely attached.

[0035] Note that after the completion of the above attaching process, when the piston rod 58 is moved to the retracting side X2, contrary to the attaching process, an operation opposite to the attaching process is performed. That is, as the link base plate 60 moves in the retracting side X2, the first protrusion 85 is guided from the second inclined groove 84 to the first inclined groove 83, so that the driven head portion 70 rotates in the left direction b about the axis L.

[0036] According to the above-described embodiments, by driving the link base plate 60 (base portion) to move in the front-rear direction X (intersection direction), the driven head portion 70 can be rotated around the axis L of the wire harness 23 (object to be covered) by the link mechanism 80 (rotating portion). When the driven head portion 70 rotates, the roll tape R (covering member) sandwiched between the driven head portion 70 and the outer peripheral surface of the wire harness 23 moves in the circumferential direction of the wire harness 23 along the outer peripheral surface of the wire harness 23. By this movement, the roll tape R is attached in the circumferential direction along the outer peripheral surface of the wire harness 23. With this configuration, it is not necessary to once remove the wire harness 23 from the winding device 1 and manually attach the end portion of the roll tape R to the wire harness 23 each time for attaching the roll tape R. Therefore, it is possible to provide the winding device 1 capable of easily attaching the covering member to the object to be covered. And with this configuration, the wire harness WH can be efficiently manufactured.

[0037] Also, according to the above configuration, a rotating portion can be constructed using the link mechanism 80 that converts the forward and backward movement of the link base plate 60 into the rotation of the driven head portion 70, and the winding device 1 can be manufactured. And according to this configuration, by pressing the driven head portion 70 against the wire harness 23, the displacement of the driven head portion 70 toward the advancing side X1 can be restricted. And by moving the link base plate 60 to the advancing side X1 in this restricted state, the driven head portion 70 can be easily rotated around the axis L. That is, the driven head portion 70 can be rotated by a simple operation of pressing the driven head portion 70 against the wire harness 23 and driving the link base plate 60 to the advancing side X1. Also, according to this, since the wire harness 23 can be used as the positioning of the driven head portion 70 and as the fulcrum of the rotation of the driven head portion 70, the link mechanism 80 can be made into a simple configuration of the first link 81 and the auxiliary link 86. Thereby, for example, compared with the winding device 1 having a complicated link structure that enables the driven head portion 70 to rotate regardless of the presence or absence of the wire harness 23 or a structure that precisely controls the position and rotation angle of the driven head portion 70 with a motor or the like, the manufacturing and operation costs can be reduced.

[0038] Further, according to the above configuration, when the link base plate 60 moves forward and backward, the first protrusion 85 of the driven head portion 70 is guided to the advancing side X1 or the retracting side X2 by the link groove 82. At this time, according to the shape of the first inclined groove 83 of the link base plate 60, by pressing the first protrusion 85 of the driven head portion 70 with the inner wall surface 83a, a moment centered on the axis L is generated, and the driven head portion 70 can be rotated around the axis L. Then, by guiding the first protrusion 85 with the inner wall surface 83a, the interval in the width direction Y of the first protrusion 85 with respect to the axis L is gradually widened, and the driven head portion 70 can be further rotated. Also, according to the shape of the second inclined groove 84, by pressing the first protrusion 85 with the inner wall surface 84a, the driven head portion 70 can be rotated around the axis L. Then, by guiding the first protrusion 85 with the inner wall surface 84a, the interval in the width direction Y of the first protrusion 85 with respect to the axis L is gradually reduced, and the driven head portion 70 can be pressed against the side where the wire bundle 23 is located. With this configuration, the roll tape R can be accurately and reliably attached to the outer peripheral surface of the wire bundle 23.

[0039] Further, according to the above configuration, since the auxiliary link 86 can stably support the driven head portion 70, the operation of the driven head portion 70 can be stabilized and the durability of the winding device 1 can be improved.

[0040] Further, according to the above configuration, since the shape absorbing portion 73 (curved portion) of the driven head portion 70 can ensure the contact area between the attaching body 72 and the wire bundle 23 corresponding to wire bundles 23 of various diameters, the wire bundle 23 can be reliably held. Also, the roll tape R that is not attached to the wire bundle 23 can be pressed against the outer peripheral surface of the wire bundle 23 by the pressing portion 74 of the driven head portion 70. Therefore, the shape absorbing portion 73 and the pressing portion 74 can perform the attachment of the roll tape R more reliably.

[0041] Further, according to the above configuration, by rotating the driven head portion 70 by more than 90° around the axis L, a sufficient rotation angle of the driven head portion 70 can be ensured, and the winding device 1 with high sticking performance of the roll tape R can be constructed.

[0042] Also, according to the above configuration, the wire harness manufacturing apparatus 100 can be configured using the winding device 1 capable of easily attaching the roll tape R to the wire bundle 23.

[0043] Note that the embodiments described above merely show typical aspects of the present invention, and the present invention is not limited thereto. For example, in this embodiment, two electric wires 20 are prepared assuming that the wire harness WH is used in a DC circuit. However, depending on the application, such as when the wire harness WH is used in an AC circuit, three or more electric wires 20 may be prepared. Also, the electric wire 20 may be one, and in this case, one electric wire 20 becomes the object to be coated. Further, in this embodiment, the link mechanism 80 is configured to rotate the driven head portion 70 in the right direction a by the displacement of the piston rod 58 toward the advancing side X1. However, for example, when the direction of winding the roll tape R is opposite to that of this embodiment, the link mechanism 80 (link base plate 60, driven head portion 70, etc.) may be configured to be symmetrical with the left and right of this embodiment. Thereby, the driven head portion 70 may be rotated in the left direction b by the displacement of the piston rod 58 toward the advancing side X1.

[0044] Also, in this embodiment, the object to be coated is the electric wire 20, but when winding the coating member around a member having an axis extending in a predetermined direction not limited to the electric wire 20, the winding device 1 can also be used. Also, at this time, the coating member is not necessarily limited to the roll tape R. Further, in this embodiment, the link mechanism 80 is adopted as the rotating portion, but this is merely an example, and a structure other than the link mechanism 80 may be used as the rotating portion. For example, by using a drive mechanism such as a motor, the driven head portion 70 may be rotated around the axis L as the link base plate 60 moves forward and backward.

Explanation of Reference Numerals

[0045] L axis R roll tape (coating member) X front-rear direction (cross direction) Z up-down direction (axis direction) 1 winding device 20 electric wire (object to be coated) 23 wire harness (object to be coated) 60 link base plate (base part) 70 driven head part 80 link mechanism (rotating part)

Claims

1. A winding device for winding a covering member around a target to be covered having an axis extending in a predetermined direction, comprising: a base portion that moves forward and backward in an intersecting direction intersecting the axis; a driven head portion that sandwiches and attaches the covering member between the covering member and an outer peripheral surface of the target to be covered; a rotating portion that rotates the driven head portion around the axis as the base portion moves forward and backward, the winding device being characterized by comprising the rotating portion.

2. The driven head portion is provided so as to be capable of pressing against the target to be covered toward the advancing side in the intersecting direction, and displacement toward the advancing side is restricted in a pressed state, the rotating portion is a link mechanism that connects the base portion and the driven head portion and converts the forward and backward movement of the base portion into rotation of the driven head portion, the link mechanism rotates the driven head portion around the axis while pressing the driven head portion against the target to be covered when the base portion is moved to the advancing side in a state where the displacement of the driven head portion is restricted, the winding device according to claim 1, characterized by this.

3. The target to be covered is an electric wire, the base portion and the driven head portion are provided so as to extend in the intersecting direction and a width direction intersecting the intersecting direction as viewed from the axial direction of the electric wire, the link mechanism includes a first protrusion protruding from the driven head portion in the axial direction and a link groove provided in the base portion and opening in the axial direction to accommodate the first protrusion, the first protrusion is provided spaced apart from the axis in the width direction, the link groove includes a first inclined groove located on one side in the width direction as it goes toward the retreating side in the intersecting direction and a second inclined groove continuous with the first inclined groove and located on the other side in the width direction as it goes toward the retreating side, as the base portion moves to the advancing side, the first protrusion is guided from the first inclined groove to the second inclined groove, whereby the driven head portion rotates around the axis while being pressed against the outer peripheral surface of the electric wire, the winding device according to claim 2, characterized by this.

4. The link mechanism includes an auxiliary link that supports the driven head portion, the auxiliary link includes a support shaft that rotatably supports the driven head portion so as to penetrate the driven head portion in the axial direction of the target to be covered, a second protrusion protruding from the base portion in the axial direction, and a connection plate that connects the support shaft and the second protrusion and rotates around the support shaft. The connection plate is provided with a guide groove that extends in a direction from the side where the support shaft is located toward the side where the second protrusion is located, and that houses the second protrusion. The winding device according to claim 2, wherein the second protrusion is guided by the guide groove to approach or separate relatively from the support shaft.

5. The winding device according to claim 1, wherein the driven head portion includes a curved portion that extends along an outer peripheral surface of the object to be covered and holds the object to be covered, and a pressing portion that is continuously provided on the curved portion and presses the covering member that is not attached to the object to be covered toward the object to be covered.

6. The winding device according to claim 1, wherein the rotating portion rotates the driven head portion by more than 90° around the axis.

7. A wire harness manufacturing device including the winding device according to any one of claims 1 to 6.

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