JP2574208B2 - Band wrapping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band for winding a band around a drive shaft so as to wind and fix an attached object such as a boot mounted on the drive shaft so as to cover an open end of a joint unit at an outer end thereof. Related to the device.

[0002]

2. Description of the Related Art As shown in FIG. 10, in a drive shaft A for a vehicle having a joint unit B comprising a constant velocity joint at both ends, a boot C is provided to cover the open end of each joint unit B. Is installed. Boots C
A shaft body A ₁ at its small-diameter end C _1, large-diameter end C
_The band D is extrapolated to the joint unit B in
It is fixed by winding.

[0003] Conventionally, as a device for winding a band around the end of a boot, a winding guide that surrounds the end of the boot with a band insertion opening on one side around the end of the boot is disclosed in Japanese Patent Publication No. 58-34710. A band supply means for feeding a band through the opening to the inside of the winding guide; and a laser guide capable of moving forward to the mounted object side through the opening, wherein the winding guide is divided into a plurality of parts in the circumferential direction. And the guide pieces are allowed to advance and retreat in synchronization with each other in the radial direction of the boot end, so that the winding guide surrounds the boot end with a relatively large gap. The band is wrapped around the end of the boot by allowing the band to be switched between an expanded state and a reduced state in which the gap is reduced, and the band guide is fed into the inside of the winding guide with the winding guide in the expanded state. And then winding While the guide is reduced in diameter, the band is wound around the end of the boot, and the laser guide is advanced to polymerize both ends of the band, and the polymerized portion is irradiated with a laser beam through the laser guide to perform the polymerization. It is known to weld the parts.

[0004]

When the laser guide is provided as described above, it is necessary to widen the opening so that the laser guide does not interfere. However, if the opening is wide,
In some cases, the band is displaced in the width direction at the opening, and the band cannot be accurately sent to the winding guide. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a band winding device that accurately sends a band to a winding guide so that the band can be reliably wound around an object.

[0005]

In order to achieve the above object,
The present invention relates to a band winding device for winding a band around an object to be mounted, a winding guide for surrounding the object to be mounted on one side of the periphery of the object while leaving an opening for inserting a band, and an opening. Band feeding means for feeding the band into the inside of the winding guide through, and a laser guide capable of moving forward to the mounted object side through the opening, wherein the winding guide is formed by a plurality of guide pieces divided in the circumferential direction. By configuring these guide pieces so that they can move forward and backward in synchronization with each other in the radial direction of the mounted object,
The winding guide can be switched between an expanded state in which the mounting object is surrounded with a relatively large gap and a reduced diameter state in which the gap is reduced. The band is fed by the band supply means, the winding guide is reduced in diameter and the band is wound around the object to be mounted, and the laser guide is advanced to polymerize both ends of the band. A laser beam is radiated through to weld the overlapped portion, and a band guide for guiding the winding guide in a state where the band is positioned in the width direction facing the opening is provided, and the band guide is provided. A means is provided for retreating to the side of the opening when the laser guide advances. In this case, a second band guide for positioning the starting end of the band sent out from the winding guide in the width direction is provided facing the opening, and the second band guide is opened when the laser guide advances. It is desirable to provide means for retreating to the side of the part.

[0006]

When the band is wound, the leading end of the band is guided by the band guide and passes through the opening without being displaced in the width direction, so that the band is accurately fed into the winding guide.
Thereafter, the band is guided by the winding guide and is securely wound around the outer periphery of the mounted object, so that the band is not mistakenly wound. In addition, if the second band guide is provided as described above, when the feeding of the band is completed and the starting end of the band is sent out to the opening from the winding guide, the starting end is moved in the width direction by the second band guide. And the alignment accuracy between the start and end of the band is improved. When the laser guide is advanced to the mounted object side through the opening to overlap and weld both ends of the band, the two band guides retreat to the side of the opening, and interference of the laser guide to these band guides is reduced. Does not occur.

[0007]

DETAILED DESCRIPTION FIG. 1 shows the attached band winding device winding the band D to the small diameter end C ₁ of the boot C extrapolated to the shaft body A ₁ of the drive shaft A as shown in FIG. 10, the apparatus band supply means 1 And a winding head 2, and a drive shaft A
Was gripped vertically movable grippers 4 attached to the transport pallet 3, lifting the predetermined set position a drive shaft A at elevated該把jig 4 for Makizuke head 2, the band D to the small diameter end C ₁ in this state Was wound.

The band supply means 1 includes a band coil 1a.
Tension roller that can move up and down the band D fed from
1b, a guide roller 1c, a pinch roller 1d, and a pressing roller 1e, so as to be supplied to the winding head 2 along a feeding rail 1f.

[0009] the winding head 2, as shown in FIG. 3, the winding guide 5 that surrounds leaving an opening for the band insert a small diameter end C ₁ on its upper side portion, a vertically movable facing the opening A laser guide 6 is provided, and the winding guide 5 is divided into four first to fourth guide pieces 5 ₁ , 4.
5 _2, 5 _3, 5 ₄ constituted by, and the expanded state surrounding by presence of a relatively large gap the small diameter end C _1, freely switched to the reduced diameter state to reduce the gap, guide the winding 5 The band D is fed into the guide 5 from the opening with the diameter increased.
5 starting end of the first guide element _1, a second guide piece 5 _2, third guide piece 5 _3, are guided in the order of the fourth guide piece 5 ₄ small diameter end C ₁
When the winding guide 5 has been turned once around the circumference of the circle, the small-diameter end C ₁ is tightened by the band D, and at the same time, the laser guide 6 is lowered, and the upper blade 7 formed at the lower end of the guide 6 The band D is cut by a cutter comprising the lower blade 8 attached to the tip of the feeding rail 1f, and the end of the cut band D is superimposed on the start end. In this state, a laser from a laser irradiation head (not shown) is used. Light guides laser 6
Irradiation was performed on the overlapping portion of the band D through the inside.

[0010] The first through of the fourth guide pieces 5 ₁ ... 5 _4, the first and fourth guide pieces 5 _1, 5 ₄ located on either side of the opening, Makizuke head as shown in FIG. 4 in respective guide pieces 5 _1, 5 ₄ of the fixed sliding rod 9, 10 to each guide block 2a of the fixed 2 is slidably supported in the lateral direction, whereas,
Second and third guide piece 5 _2, 5 _3, the drive shaft A
As shown in FIG. 5, a swing arm 11 is provided on a machine beside the winding head 2 so as to be freely swung by a cylinder 11a directly below the winding head 2 so as not to hinder the elevating operation of the winding head 2. in the guides 5 _2, 5 ₃ sliding rod 12 which were pivoted swingably in the horizontal direction at a common pivot 12a slidably supported in the vertical direction, the machine frame these sliding rod 9, 10 Directly or by levers 14 ₁ , 14 ₂ by a cam on a common cam shaft 13
The winding guide 5 can be switched between an expanded state and a reduced state by moving the winding guide 5 back and forth in synchronism with each other. Each guide pieces 5 ₁ ... 5 _4, so that there is no gap guide pieces in expanded state, tenon groove 5b for receiving the tenons 5a formed in the adjacent guide pieces are formed, in Matachijimi diameter state, second and third guide piece 5 _2, 5 ₃ swings to the first and fourth guide pieces _51, 52 laterally inward by being pushed by the hook part 5c formed in the lower part of ₄ as well as upward is, all of the guide strip 5 ₁ ... 5 ₄ is in contact with the circumferential direction.

[0011] The both widthwise side surfaces of the band D of the guide pieces 5 ₁ ... 5 _4, retreat radially outwardly of the small diameter end C ₁ against the side plate 15 spring 15a for positioning the band D in the width direction It is movably provided. To explain this in detail, a pair of cross pins 15b, 15b, in which a long slot 5d in the radial direction is formed in each guide piece and the side plates 15, 15 on both sides are laterally disposed therebetween. In this case, a spring 15a seated on the outer edges of both side plates 15, 15 is externally inserted into a screw 5e attached to the outer end of each guide piece by slidingly supporting the elongated plate 5d. The spring 15a biases the inner end 15 of the guide 15 so as to protrude inward from the inner peripheral surface of each guide piece. In the drawing, reference numeral 15c denotes a clip for preventing the cross pin 15b from being removed.
A guide block 2b fixed to the winding head 2 that supports the laser guide 6 so as to be vertically movable is provided with the laser guide 6.
A pair of first and second band guides located on both sides of the
The _first and _second band guides 16 ₁ and 16 ₂ are pivotally pivoted in the lateral direction, and the lower ends of the band guides 16 ₁ and 16 ₂ facing the openings are formed with downward concave grooves 16 a for receiving the band D. over the entire length of the band guide 16 ₁ from the first to fourth guide pieces 5 _1, 5 _2, 5 _3, 5 ₄ through the second band guide 16 ₂ to reach the band D winding path, and these grooves 16a band D by the side plate 15 is positioned in the width direction, and so the band D to the small diameter end C ₁ is wound without causing any deviation in the width direction.

The band guides 16 ₁ and 16 ₂ are urged by springs 16 b so that the lower ends of the band guides 16 ₁ and 16 ₂ face the openings, and the laser guide 6 causes the lever 17 to be moved by the cam on the cam shaft 13. When the band guides 16 ₁ , 1 cooperate with the cam portions 6 a formed on the respective side surfaces of the laser guide 6 when moved down through
It was to be opened laterally outwardly through 6 ₂ on the roller 16c. Second band guide 16 _2, the back band D from the feeding rails f As can pass, concave portions are formed on the back. Further, having a shaft support portion 14a of the lever 14 ₁ to advance and retreat the first guide pieces 5 ₁ of sliding rod 9, the bracket 2c of the side of the winding head 2, the tip of the lever 14 ₁ facing the sliding rod 9 the first guide piece consisting of an air cylinder to part the first guide piece 5 ₁ by pressing alone is advanced to a diameter-reduced position inside 5 ₁
Drive source 18 is provided.

[0013] the winding head 2 is further pressed facing the back bar 19, the end face of the small diameter end C ₁ which is interposed between the small diameter end C ₁ in the rear surface of the beginning and end of the overlapped portion of the band D A member 20 is provided. To detail this, located axially inward of the shaft main body A ₁ to placement portion of the winding guide 5 and a laser guide 6, the winding head 2 for fixing the bracket 2d, 6 to 8 As shown in FIG. 1, a slider 21 is provided which is movable back and forth in the axial direction.
The shaft body A ₁ is attached to a pair of leg pieces 21a
A pair of pressing pieces 20a, 2 with an arcuate inner edge sandwiching
0a, and the pressing members 20a, 20a
Was configured. Then, the pressing pieces 20a, 20a are urged to an open state in which the pressing pieces 20a, 20a are opened downward by a spring 20b. axially inward direction of the shaft body a ₁ of the portion of the end C ₁ is inserted from below between the both pressing pieces 20a, 20a, the both pressing pieces 20a, 20a is the shaft body a ₁
The pressed closed, axially inwardly of the end surface of the small diameter end C ₁ (right side in FIG. 8) to the both pressing pieces 20a, 20a is to face. A movable element 2 is urged upward and downward by a guide bar 22a and constantly upward by a spring 22b.
2 was attached, and a back bar 19 having a lower end bent outward in the axial direction was fixed to the mover 22.

[0014] The slider 21 is attached to the bracket 2d by one.
The bracket 2d is supported via a pair of guide bars 21b, 21b so as to be able to advance and retreat in the axial direction.
A first cylinder 23 having one end connected to the slider 21 and a second end connected to the other end of the piston rod 23a of the first cylinder 23
a second cylinder 24 that presses inward in the axial direction via a. The slider 21 contracts the second cylinder 24 and pushes the piston rod 23a of the first cylinder 23 outward in the axial direction (downward in FIG. 7). by forward in), and an advanced position to move a predetermined amount in the axial direction outward beyond the predetermined fixed position pressing member 20 relative to the shaft body a ₁ of the small-diameter end C _1, a second cylinder 24 in this state by pushing back the piston rod 23a through the stretching is operated by the lever 24a axially inward by the predetermined amount, the upper portion lower end of the small-diameter end C ₁ of and back bar 19 back pressing member 20 is in the locked position facing the intermediate position (illustrated position), by backward the piston rod 23a axially inwardly, freely movable in the retracted position the lower end of the back bar 19 is detached axially inward of the small-diameter end C ₁ And

[0015] In winding the band D, first move the slider 21 from the retracted position to the advanced position, presses the pressing member 20 is brought into contact with the end face of the small diameter end C ₁ axially outward. At this time, the pressing member 20 from being moved a predetermined amount in the axial direction outward beyond the predetermined fixing position of the small diameter end C _1, exactly the small diameter end C ₁ pressing member 20 by the compression deformation in the axial direction without moving to follow, small-diameter end C ₁ is reliably pushed to the locked position. Next, the slider 21 is returned to the intermediate position, and the pressing member
20 by receiving the end face of the small diameter end C _1, to prevent the displacement in the axial direction inside of the small-diameter end C ₁ due to the elastic restoring force of the boot C,
Arresting small diameter end C ₁ in a fixed position.

[0016] The winding guide 5 is provided to fit to the fixed position, if Okurikome band D by the band supply means 1 to the winding guide 5 of the enlarged diameter state Te Thus, around the small-diameter end C ₁ Band D is surely wound.

When feeding the guide D, the band D
Starting end where sent into the first guide piece 5 _1, the driving source by the operation of 18 to advance the first guide piece 5 ₁ reduced diameter position as shown in FIG. 9 (a), then the first guide piece 5 ₁ Is returned to the expanded position, and feeding of the band D is resumed. According to this, it is corrected to a curved shape beginning of the band D by advancement of the first guide pieces 5 ₁ having a curvature that substantially matches the curvature of the inner peripheral surface of the guide piece 5 _1, upon subsequent delivery, Figure 9
(b) (c) second to fourth guide pieces beginning of the band D as shown in (d) has a first guide piece 5 ₁ similar curvature 5 _2,
5 _3, slides along the 5 inner peripheral surface of the _fourth contact with the small diameter end C ₁ is prevented by the band D to the winding guide 5 is fed smoothly without receiving a contact resistance between the small diameter end C ₁ It is.

[0018] Then, at the beginning of the band D has reached the opening, the guide piece by a cam on the camshaft 13 5 ₁ ... 5 ₄
The advancing the reduced diameter position, the band D with tightening small diameter end C ₁ wound as contracted state winding guide 5, it lowers the laser guide 6 cutter - by cutting the band D, further the beginning of the band D The end and the end are superimposed on the lower end of the back bar 19, and this superimposed portion is pushed down together with the back bar 19 to obtain the state shown in FIG. 9 (e). Incidentally, when reducing the diameter of the winding guide 5, also the side plates 15 attached to each guide piece 5 ₁ ... 5 ₄ in contact with the circumferential surface of the small diameter end C _1, each guide piece of the leaf-side 15 spring 15a
, And continues to advance inward in the radial direction due to the relative retreat against the above, so that the insufficient tightening of the band D due to insufficient diameter reduction of the winding guide 5 does not occur.

Next, the overlapping portion of the band D is irradiated with laser light through the laser guide 6 to weld the overlapping portion, and then the slider 21 is returned to the retracted position, and the lower end of the back bar 19 is attached to the back surface of the overlapping portion. , And finally, the winding guide 5 is returned to the expanded state and the laser guide 6 is raised to complete the winding operation of the band D.

In the above embodiment, the small diameter end C _{1 of the} boot C is used.
A is a winding attaching device a band D, also apply the present invention to the take-put device band D to the large diameter end C _2, further also present invention when winding the band in addition to the attached object other than the boot Can be applied. Also, the second band guide 16 of the above embodiment is used.
₂ is omitted, may be by the first band guide 16 ₁ for guiding only delivery of the band D to the winding guide 5 but, in order to improve the alignment accuracy of the beginning and end of the band D is the second band those who features a guide 16 ₂ is good.

[0021]

As is apparent from the above description, according to the present invention, even if the opening is widened by providing the laser guide, the band is positioned and wound in the width direction by the band guide at the opening. Because it can be guided to the guide, the band can be accurately sent to the winding guide,
The band can be prevented from being wound incorrectly. Further, a second position for positioning the start end of the band sent out from the winding guide in the width direction.
By providing the band guide, the alignment accuracy between the start end and the end of the band can be secured, and both ends of the band can be accurately overlapped and welded.

[Brief description of the drawings]

FIG. 1 is a front view of an example of the device of the present invention.

FIG. 2 is an enlarged plan view of a main part thereof.

FIG. 3 is a front view of an arrangement portion of a winding guide as viewed from a line III-III in FIG. 2;

FIG. 4 is a plan view taken along the line IV-IV in FIG. 3;

FIG. 5 is a side view cut along the line VV in FIG. 3;

FIG. 6 is a front view of an arrangement portion of the back bar and the pressing member viewed from the line VI-VI of FIG. 2;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is an explanatory view showing a procedure for winding a band.

FIG. 10 is a longitudinal sectional view of a drive shaft.

[Explanation of symbols]

C ₁ ... Boots small-diameter end (the attached object) D ... Band 1 ... band supply means 5 ... winding guide 5 _1, 5 _2, 5 _3, 5 ₄ ... guide piece 6 ... laser guide 16 ₁ ... band guide 16 ₂ ... Second band guide

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tomohiko Yamamoto 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References JP-A-2-76648 (JP, A) 58-146630 (JP, U) JP-B-58-34710 (JP, B2)

Claims (2)

(57) [Claims] 1. A band winding device for winding a band around an outer periphery of an attached object, comprising: a winding guide for surrounding the attached object except for an opening for inserting a band on one side around the attached object; A band supply means for feeding a band into the inside of the winding guide through the portion; and a laser guide which can be advanced toward the object to be mounted through the opening, and a plurality of guide pieces which are divided in the circumferential direction. The guide pieces are made movable forward and backward in synchronization with each other in the radial direction of the mounted object, so that the winding guide surrounds the mounted object with a relatively large gap. And the band can be switched to a reduced diameter state in which the gap is reduced, and the band is supplied to the inside by the band supply means while the winding guide is expanded, and the band is attached to the winding guide in a reduced diameter state. While wrapping around the object, The laser beam is irradiated through the laser guide to the overlapping portion to weld the overlapping portion, and the band is exposed in the width direction so as to face the opening. A band guide for guiding the band guide to the winding guide in a positioned state, and a means for retracting the band guide to the side of the opening when the laser guide advances. 2. A second band guide for positioning a starting end of a band sent out from the winding guide in a width direction is provided facing the opening, and the second band guide is moved when the laser guide advances. 2. The band winding device according to claim 1, further comprising means for retracting the side of the opening.