JPH07195239A - Band rolling device - Google Patents

Abstract

PURPOSE:To accurately roll a band around the outer circumference of a take-up reel without causing the dislocation in the width direction. CONSTITUTION:A side plate 15 for positioning a band D in the width direction is fitted to a plurality of guide pieces 51 to 54 for constituting a rolling guide so as to be energized by a spring towards the inside in the radial direction. The band D sent inside the rolling guide is guided by the side plate 15, and is sent inside the rolling guide without being dislocated in the width direction, and the band D is accurately rolled around the outer circumference of the take-up reel C1. Even if the side plate D is abutted on the outer circumference of the take-up reel C1 when the diameter of the rolling guide is reduced, the respective guide pieces 51 to 54 are relatively moved forward towards the inside in the radial direction with regard to the side plate D against the energizing spring, so that the poor winding of the band D can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band wrap for winding a band around an object to be mounted such as a boot mounted on a drive shaft so as to cover an open end of a joint unit at its outer end. Regarding the device.

[0002]

2. Description of the Related Art As shown in FIG. 10, in a drive shaft A for a vehicle in which a joint unit B composed of a constant velocity joint is assembled at both ends, a boot C is provided to cover an open end of each joint unit B. I am wearing. Boots C
At the small diameter end C ₁ , the shaft body A ₁ and the large diameter end C ₂
At the joint unit B, and they are fixed by winding with the band D respectively.

Conventionally, as a device for winding a band around the end of a boot, Japanese Patent Publication No. 58-34710 and Japanese Utility Model Laid-Open No. 58-146630 disclose an opening for inserting the band at one end around the boot. And a band supply means for feeding a band to the inside of the winding guide through the opening, and the winding guide is constituted by a plurality of guide pieces divided in the circumferential direction. By expanding and retracting these guide pieces in synchronization with each other in the radial direction of the boot end, the winding guide surrounds the boot end with a relatively large gap, and a state in which the winding guide is expanded. The winding guide is expanded and the winding guide is expanded so that the band is fed from the band supply means to wind the band around the boot end, and then the winding guide is compressed. To the diameter condition Those to tighten around the tool end is known.

[0004]

By the way, in the above-mentioned conventional example, when the band is fed, the band is displaced in the width direction thereof, and the band is accurately wound around a desired winding position of the object to be attached. You may not be able to. The present invention has been made in view of the above points, and an object thereof is to provide a band winding device capable of accurately winding the band by preventing the band from being displaced.

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The present invention relates to a band winding device that winds a band around an outer periphery of an object to be attached, the winding guide enclosing the object to be attached around one side thereof with an opening for inserting the band, and the opening. Band feeding means for feeding the band to the inside of the winding guide through the winding guide, and the winding guide is composed of a plurality of circumferentially divided guide pieces, and these guide pieces are arranged in the radial direction of the object to be attached. By allowing the winding guide to move back and forth in synchronization with the above, the winding guide can be switched between an expanded state in which the attached object is surrounded by a relatively large gap and a reduced state in which this gap is reduced. In the case where the winding guide is expanded and the band is fed into the inside by the band supply means, and the winding guide is contracted to wind the band around the attached object, the width of the band of the guide piece Width band on both sides And wherein the mounting freely retracting radially outward of the side plate against the spring to position the.

[0006]

[Operation] The band fed into the winding guide advances in the winding guide while being positioned in the width direction by the side plates on both sides of each guide piece constituting the winding guide, and the predetermined winding of the attached portion is performed. The band is wound exactly around the place. If a side plate is fixed to each guide piece, the side plate interferes with the object to be attached when the diameter of the winding guide is reduced, and the band cannot be sufficiently tightened. In this case, if the side plate is attached to each guide piece so as to be able to retreat outward in the radial direction against the spring, even if the side plate comes into contact with the assembly when the winding guide is reduced in diameter, By retreating the piece inward in the radial direction relative to the spring of the side plate, the piece can be further advanced inward in the radial direction, and the band tightening failure does not occur.

[0007]

FIG. 1 shows a band winding device for winding a band D around a small diameter end C ₁ of a boot C which is externally inserted on a shaft body A ₁ of a drive shaft A shown in FIG. And a winding head 2, and a drive shaft A
Is gripped by a vertically movable gripping tool 4 mounted on a transfer pallet 3, and the drive shaft A is lifted to a predetermined set position with respect to the winding head 2 by raising the gripping tool 4, and in this state, the band D is attached to the small diameter end C _1. I tried to wind.

The band supplying means 1 is a band coil 1a.
A tension roller that can freely move up and down the band D that is fed from the
1b, a guide roller 1c, a pinch roller 1d, and a pressing roller 1e are configured to be supplied to the winding head 2 along a feeding rail 1f.

As shown in FIG. 3, the winding head 2 has a winding guide 5 which surrounds the small diameter end C ₁ on the upper side of the winding head 2 while leaving an opening for inserting a band, and is vertically movable so as to face the opening. A laser guide 6 is provided, and the winding guide 5 is divided into four circumferentially-divided first to fourth four guide pieces 5 ₁ ,
The winding guide 5 is configured by 5 ₂ , 5 ₃ , 5 ₄ and can be switched between an expanded state in which the small diameter end C ₁ is surrounded by a relatively large gap and a reduced diameter state in which the gap is reduced. Is expanded and the band D is fed into the guide 5 through the opening,
Is guided in the order of the first guide piece 5 ₁ , the second guide piece 5 ₂ , the third guide piece 5 ₃ , and the fourth guide piece 5 ₄ , and the small diameter end C ₁
When the wrapping guide 5 is reduced in diameter once around the circumference, 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 and The band D is cut by a cutter including a lower blade 8 attached to the tip of the feeding rail 1f, and the end of the cut band D is superposed on the start end. In this state, a laser from a laser irradiation head Light the laser guide 6
Irradiation was performed through the inside to the overlapped part of band D.

Of the _{first to} fourth guide pieces 5 ₁ ... 5 ₄ , the first and fourth guide pieces 5 ₁ and 5 ₄ located on both sides of the opening are the winding heads as shown in FIG. The guide blocks 2a fixed to 2 are slidably supported in the lateral direction on the sliding rods 9 and 10 fixed to the guide pieces 5 ₁ and 5 ₄ , respectively.
The second and third guide pieces 5 ₂ and 5 ₃ are the drive shaft A.
As shown in FIG. 5, the swinging arm 11 is provided on the machine base on the side of the winding head 2 so that it can be swung directly below the winding head 2 so as not to interfere with the lifting operation of the winding head 2. Both guides 5 ₂ , 5 ₃ are supported slidably in the vertical direction by a sliding rod 12 pivotally attached to a common pivot 12a so as to be swingable in the lateral direction, and these sliding rods 9, 10, 12 are supported by the machine base. directly or lever by a common cam of the cam shaft 13 which is journaled to -14 _1, 14 ₂
The winding guide 5 can be switched between the diameter-expanded state and the diameter-reduced state by advancing and retreating in synchronization with each other via. Each guide piece 5 ₁ ... 5 ₄ is formed with a mortise groove 5b that receives a tenon 5a formed on an adjacent guide piece so that no gap is formed between the guide pieces in the expanded state. The second and third guide pieces 5 ₂ and 5 ₃ move upward, and are pushed laterally inward by being pushed by the contact portions 5c formed at the lower portions of the first and fourth guide pieces 5 ₁ and 5 _4. All the guide pieces 5 ₁ ... 5 ₄ are arranged so as to come into contact with each other in the circumferential direction.

Side plates 15 for locating the band D in the width direction retreat outwardly in the radial direction of the small-diameter end C ₁ against the spring 15a on both widthwise side surfaces of the band D of each guide piece 5 ₁ ... 5 _4. It is movably provided. To describe it in detail, a pair of cross pins 15b, 15b in which each guide piece is formed with a long hole 5d in the radial direction and side plates 15, 15 on both sides are provided between them In the slidable holes 5d, springs 15a seated on the outer end edges of the both side plates 15, 15 are externally inserted into the screws 5e attached to the outer end portions of the guide pieces, and the both side plates 15, The spring 15a biases the inner end 15 of the guide piece so as to project inwardly of the inner peripheral surface of each guide piece. In the figure, 15c is a clip for preventing the cross pin 15b from coming off.
Further, the laser guide 6 is attached to a guide block 2b fixed to the winding head 2 which supports the laser guide 6 so as to be vertically movable.
A pair of first and second band guides located on both sides of the
16 ₁ and 16 ₂ are pivotally mounted in a swingable manner in the lateral direction, and downwardly-directed recessed grooves 16a for receiving the band D are formed at the lower ends of the band guides 16 ₁ and 16 ₂ facing the openings, and These concave grooves 16a are formed over the entire length of the winding path of the band D from the band guide 16 ₁ to the second band guide 16 ₂ via the _first to fourth guide pieces 5 ₁ , 5 ₂ , 5 ₃ , 5 _4. The band D is positioned in the width direction by the side plate 15, and the band D is wound around the small-diameter end C ₁ without causing a displacement in the width direction.

The band guides 16 ₁ and 16 ₂ are urged by springs 16b so that the lower ends of the band guides 16 ₁ and 16 ₂ face the openings, and the laser guide 6 moves the lever 17 by the cam on the cam shaft 13. The band guides 16 ₁ , 1 that cooperate with the cam portions 6a formed on the side surfaces of the laser guide 6 when the band guides 16 ₁ , 1
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
A drive source 18 for

The winding head 2 is further provided with a back bar 19 interposed between the small diameter end C ₁ on the back surface of the overlapping portion at the beginning and the end of the band D, and a pressing member facing the end surface of the small diameter end C _1. And a member 20. This will be described in detail. A bracket 2d fixed to the winding head 2 located axially inward of the shaft body A ₁ with respect to the arrangement portion of the winding guide 5 and the laser guide 6 is shown in FIGS. As shown in FIG. 3, a slider 21 that can move forward and backward in the axial direction is provided.
On the pair of leg pieces 21a, 21a which are vertically installed on the shaft 21, the shaft main body A ₁
A pair of pressing pieces 20a, 2 whose inner edge is a circular arc shape
0a is pivotally attached and the pressing member 20a is pressed by the pressing pieces 20a, 20a.
Configured. Then, when both the pressing pieces 20a, 20a are urged by a spring 20b to an open state where they are opened downward and the drive shaft A is lifted to a predetermined set position by raising the gripping tool 4 on the transfer pallet 3 as described above, a small diameter is obtained. A portion of the shaft body A ₁ axially inward of the end C ₁ is inserted from below between the pressing pieces 20a, 20a, and the pressing pieces 20a, 20a are inserted into the shaft body A ₁
Then, the pressing pieces 20a, 20a are made to face each other axially inward of the end surface of the small diameter end C ₁ (right side in FIG. 8). In addition, a mover 2 is vertically movably attached to the slider 21 by a guide bar 22a and is always urged upward by a spring 22b.
2 was attached, and a back bar 19 whose lower end was bent outward in the axial direction was fixed to the mover 22.

The slider 21 is attached to the bracket 2d.
It is supported by a pair of guide bars 21b and 21b so as to be movable back and forth in the axial direction, and the piston rod 23a is supported on the bracket 2d.
A first cylinder 23 whose one end is connected to the slider 21 and a second cylinder 24 which presses the other end of the piston rod 23a of the first cylinder 23 axially inward via a lever 24a,
The slider 21 is caused to contract the second cylinder 24 and the piston rod 23a of the first cylinder 23 is moved outward in the axial direction (downward in FIG. 7), so that the pressing member 20 has the shaft main body with the small diameter end C ₁ . A forward position in which it moves a predetermined amount outward in the axial direction beyond a predetermined fixed position with respect to A _1, and in this state the second cylinder 24 is extended to move the piston rod 23a axially inward through the lever 24a. By pushing back by a fixed amount, the pressing member 20 returns to the fixed position and the lower end of the back bar 19 faces the upper side of the small diameter end C ₁ (the intermediate position) and the piston rod 23a axially inward. the by backward and movable in the retracted position the lower end of the back bar 19 is detached axially inward of the small-diameter end C _1.

When winding the band D, first, the slider 21 is moved from the retracted position to the advanced position, and the pressing member 20 is brought into contact with the end surface of the small diameter end C ₁ and pressed outward in the axial direction. 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 Even if they do not move following each other, the small diameter end C ₁ is reliably pushed to the fixed position. Next, the slider 21 is returned to the intermediate position and the pressing member
The end face of the small diameter end C ₁ is received by 20 to prevent the small diameter end C ₁ from being displaced inward in the axial direction by the elastic restoring force of the boot C,
Stop the small diameter end C ₁ at a fixed position.

The winding guide 5 is provided in conformity with this fixed position. Thus, when the band D is fed by the band supply means 1 to the winding guide 5 in the expanded diameter state, the circumference of the small diameter end C ₁ is reached. The band D is surely wound.

When the guide D is fed, 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 diameter position and the feeding of the band D is restarted. According to this, the forward end of the band D is corrected by the forward movement of the first guide piece 5 ₁ into a curved shape having a curvature that substantially matches the curvature of the inner peripheral surface of the guide piece 5 ₁ , and during the subsequent feeding, 9
As shown in (b), (c), and (d), the start end of the band D has second to fourth guide pieces 5 ₂ having the same curvature as that of the first guide piece 5 ₁ ,
Sliding along the inner peripheral surface of 5 ₃ , 5 ₄ prevents contact with the small diameter end C _1, and the band D is smoothly fed into the winding guide 5 without receiving contact resistance with the small diameter end C _1. Be done.

When the starting end of the band D reaches the opening, the guide pieces 5 ₁ ... 5 ₄ are moved by the cam on the cam shaft 13.
Is advanced to a reduced diameter position, the winding guide 5 is reduced in diameter, and the band D is wound around the small diameter end C ₁ , and the laser guide 6 is lowered to cut the band D by the cutter, and the start end of the band D is further cut. And the end are polymerized on the lower end of the back bar 19, and the overlapped portion is pushed down together with the back bar 19 to obtain the state shown in FIG. 9 (e). When the winding guide 5 is reduced in diameter, even if the side plates 15 attached to the respective guide pieces 5 ₁ ... 5 ₄ come into contact with the peripheral surface of the small-diameter end C ₁ , the respective guide pieces are provided with springs 15a on the plate side 15.
By the relative retraction against the above, the tape continues to move inward in the radial direction, and the winding tightening failure of the band D due to the 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 so that the lower end portion of the back bar 19 is located on the back surface of the overlapping portion. Is pulled out inward in the axial direction, and finally the winding guide 5 is returned to the expanded diameter 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.
The present invention can be applied to a device for winding the band D around the large diameter end C ₂ , but the present invention is also applicable to the case where the band is wound around an attachment other than the boot. Can be applied. In addition, the second band guide 16 of the above embodiment
₂ may be omitted and only the feeding of the band D into the winding guide 5 may be guided by the first band guide 16 _1, but in order to improve the alignment accuracy of the start end and the end of the band D, the second band guide 16 ₁ those who features a guide 16 ₂ is good.

[0021]

As is apparent from the above description, according to the present invention, the band can be accurately wound without displacement in the width direction, and the reliability of the band winding work is improved. .

[Brief description of 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 the main part.

FIG. 3 is a front view of the arrangement portion of the winding guide viewed from the line III-III in FIG.

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

5 is a side view taken along the line V-V of FIG.

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

7 is a side view taken along the line VII-VII of FIG.

8 is a side view taken along the line VIII-VIII of FIG.

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

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

[Explanation of symbols]

C ₁ ... Boot small diameter end (attached object) D ... Band 1 ... Band supply means 5 ... Wrapping guide 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ , ... Guide piece 15 ... Side plate 15a ... Spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Yamamoto 19 Tochigi Plant, Honda Motor Co., Ltd. 19 Matsuyama-cho, Moka-shi, Tochigi Prefecture

Claims (1)

[Claims] 1. A band winding device for winding a band around an outer periphery of an object to be attached, comprising: a winding guide that surrounds the object to be attached, leaving an opening for inserting a band on one side of the periphery; and the opening. Band feeding means for feeding the band to the inside of the winding guide through the portion, and the winding guide is constituted by a plurality of guide pieces divided in the circumferential direction, and these guide pieces are arranged in the radial direction of the object to be attached. By being able to move back and forth in synchronization with each other,
The winding guide can be switched between a diameter-expanded state in which the mounted object is surrounded by a relatively large gap and a diameter-decreased state in which the gap is reduced, and the winding guide is set in the diameter-increased state to the inside. In the one in which the band is fed by the band supply means, and the winding guide is reduced in diameter so that the band is wound around the object to be attached, the band is positioned in the width direction on both sides of the guide piece in the width direction. A band winding device, characterized in that a side plate is attached so as to be capable of retracting radially outward against a spring.