JP2582313B2 - Band winding method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a drive shaft for winding and fixing an object to be mounted such as a boot attached to cover an open end of a joint unit at an outer end thereof. The present invention relates to a band winding method for winding a band and a band winding device used for performing the method.

(Prior Art) As shown in FIG. 11, in a drive shaft A for a vehicle in which a joint unit B composed of a constant velocity joint is attached to both ends, boots are respectively provided to cover the open ends of the joint units B. C is attached.

Boots C, the shaft main body A at its small diameter end C _1
1 and is seamed fixed by the large-diameter end C ₂ extrapolated to the coupling unit B are respectively band D.

Conventionally, as a device for wrapping a band around the boot end, Japanese Patent Publication No. 58-34710 and Japanese Utility Model Laid-Open Publication No. 58-146630 disclose the end of the boot leaving an opening for band insertion on one side around the boot. A surrounding winding guide; and band supply means for feeding a band through the opening to the inside of the winding guide. The winding guide is constituted by a plurality of guide pieces divided in a circumferential direction. By making the pieces movable forward and backward in synchronization with each other in the radial direction of the end of the boot, the winding guide is surrounded by a relatively large gap around the end of the boot, and this gap is reduced. The band can be switched to the reduced diameter state, and the band is wound around the end of the boot by feeding the band from the band supply means to the inside of the winding guide with the winding guide being in the expanded state. Wrap the band around the boot end Those in Mel so are known.

(Problems to be Solved by the Invention) The reason why the band is fed with the winding guide in the expanded state as described above is to prevent the band from being clogged. b) As shown in (c), the starting end of the band D is bent in a substantially rectangular shape in the winding guide a, and thereafter the starting end is changed to the boot C as shown in (d), (e) and (f) of FIG. The band D cannot be smoothly fed into the winding guide a due to the sliding resistance caused by the contact with the boot C. In this case, the band D is clogged, and the band D cannot be fed.

In view of the above points, an object of the present invention is to provide a band winding method and apparatus capable of smoothly feeding a band into a winding guide so that the band can be securely wound around an attached object. .

(Means for Solving the Problems) In order to achieve the above object, a method of the present invention surrounds an object to be attached, leaving an opening for band insertion on one side around the object.
A winding guide composed of a plurality of guide pieces divided in the circumferential direction. The guide pieces can be moved forward and backward in synchronization with each other in the radial direction of the mounted object, so that the mounted object can be relatively moved. The winding guide is used to switch between an enlarged state in which there is a large gap and a reduced state in which the gap is reduced. The band is wound around the object by feeding the band to the band, and then the band is wound around the object with the winding guide in a reduced diameter state. When the start end of the band is fed into the first guide piece located at the upstream end in the feeding direction, at least the first guide piece is advanced to the radially inwardly reduced position of the mounted object, and then the first guide piece is moved. Return the piece to the radially expanded position It is characterized in that so as to resume the feeding of the de.

(Operation) By the advancement of the first guide piece to the reduced diameter position in the initial stage of feeding the band, the starting end of the band is corrected to a curved shape having a curvature substantially matching the curvature of the inner peripheral surface of the guide piece. When the band is fed, the starting end of the band slides along the inner peripheral surface of each guide piece having the same curvature and advances in the winding guide without contacting the object to be mounted. Thus, the band is smoothly fed into the winding guide without receiving the contact resistance with the object.

(Example) Figure 1 shows the attached band winding device winding the band D to the boots C and small diameter end C ₁ extrapolated to the shaft body A ₁ of de Life shaft A shown in FIG. 11, the apparatus comprising a band feed Means 1 and a wrapping head 2 for gripping a vertically movable gripper 4 having a drive shaft A mounted on a transport pallet 3;
The drive shaft A is wound around the head 2 by raising the gripper 4.
To the specified set position with respect to
It was the band D to wound to C _1.

The band supply means 1 winds the band D fed from the band coil 1a along a feed rail 1f via a tension roller 1b, a guide roller 1c, a pinch roller 1d, and a pressing roller 1e which can be moved up and down. It is configured to supply to the head 2.

The winding head 2, as shown in Figure 3, the winding guide 5 that surrounds leaving an opening for the band insert a small diameter end C ₁ on its upper side, vertically movable laser guide facing the opening 6
The winding guide 5 is constituted by _{first to} fourth four guide pieces 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ divided into four in the circumferential direction. ₁ can be switched between a diameter-enlarged state surrounding a relatively large gap and a diameter-reduced state reducing the gap.
Infeed into the guide 5, starting the first guide pieces 5 ₁ band D, the second guide piece 5 _2, third guide piece 5 _3, are guided in the order of the fourth guide piece 5 ₄ of small diameter end C ₁ After one round of the circumference, the winding guide 5 is reduced in diameter and the small-diameter end C ₁ is fastened 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 above-mentioned feed-out The band D is formed by a cutter comprising the lower blade 8 attached to the tip of the rail 1f.
Was cut, and the end of the cut band D was superimposed on the starting end. In this state, a laser beam from a laser irradiation head (not shown) was applied to the overlapping portion of the band D through the laser guide 6. .

Among the first to fourth guide pieces 5 ₁ ... 5 _4, the first and fourth guide pieces 5 _1, 5 ₄ located on either side of the opening, Chi Makizuke head 2 as shown in FIG. 4 respective guide pieces 5 ₁ to each guide block 2a fixed at 5 ₄ sliding rod 9 fixed is slidably supported in the lateral direction, while the second and third guide piece
5 ₂ and 5 ₃ are swing arms 11 provided on the machine beside the winding head 2 so as to be able to be swung directly below the winding head 2 by a cylinder 11 a so as not to hinder the elevating operation of the drive shaft A. , as shown in FIG. 5, the both guide 5 _2, 5 ₃
Sliding rod 1 which is pivotally mounted on the common pivot 12a so as to be swingable in the horizontal direction.
In 2 slidably supported in the vertical direction, each other directly or via a lever 14 _1, 14 ₂ by a common cam of the cam shaft 13 which is rotatably supported these sliding rod 9, 10 and 12 to the machine frame By moving the winding guide 5 back and forth in synchronization, the winding guide 5 can be switched between the expanded state and the reduced state. 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 Then, all the guide pieces 5 ₁ … 5 ₄ were made to contact in the circumferential direction.

The both widthwise side surfaces of the band D of the guide pieces 5 ₁ ... 5 _4, retracted freely against the side plate 15 spring 15a for positioning the band D in the width direction radially outward of the small diameter end C ₁ Is provided,
To explain this in detail, a long hole 5d in the radial direction is formed in each guide piece, and the side plates 15, 15 on both sides slide in the long hole 5d with a pair of cross pins 15b, 15b provided between them. Freely supported,
The springs 15a seated on the outer edges of the two side plates 15, 15 are extrapolated to the screws 5e attached to the outer ends of the respective guide pieces, and the inner edges of the two side plates 15, 15 are fixed to the inner periphery of each guide piece. The spring 15a is urged so as to protrude inward of the surface. In the figure, reference numeral 15c denotes a clip for extracting the cross pin 15b.

Further, a first and second pair of band guides 16 ₁ , 16 2, which are located on both sides of the laser guide 6, are provided on a guide block 2 b fixed to the winding head 2 that supports the laser guide 6 so as to be vertically movable. 16 ₂ swingably pivoted laterally, respective band guide 16 _1, 16 to form a downward concave grooves 16a for receiving the band D at the lower end portion facing the opening of the _2, the first band guide 16 ₁
From over the entire length of 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, by these grooves 16a and the side plate 15 band D is positioned in the width direction, the band D is so wound without causing any deviation in the width direction in the small diameter end C _1.

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 opening, and the laser guide 6 is moved downward by a cam on the cam shaft 13 via a lever 17. when moving and to be opened laterally outwards through the respective band guide 16 _1, 16 ₂ on the roller 16c that cam portions 6a and cooperate formed on each side of the laser guide 6. Second
Band guide 16 _2, the back to allow passage of the band D from the feeding rail f, concave portions are formed on the back. Further, the lever 14 to advance and retract the first guide pieces 5 ₁ of sliding rod 9
Having _one shaft support 14a, the bracket 2c of the side of the winding head 2, the first guide piece 5 of the inner ₁ alone reduced by pressing the distal end portion of the lever 14 ₁ facing the sliding rod 9 the driving source 18 of the first guide piece 5 for ₁ consisting of an air cylinder for advancing the radial position provided.

The winding head 2 further includes a back bar 19 which is interposed between the small diameter end C ₁ in the rear surface of the overlapping portion of the beginning and end of the band D, the pressing member 20 which faces the end face of the small diameter end C ₁ 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 bracket 2d fixed to the winding head 2, Fig. 6, second As shown in FIG. 8, there is provided a slider 21 which is movable forward and backward in the axial direction, and a pair of leg pieces 21 vertically attached to the slider 21.
a, in 21a, the pressing piece 20a of the pair of the arc-shaped inner edge sandwiching the shaft body A ₁ from both sides, pivotally mounted to 20a, the both pressing pieces 20a, 2
0a constituted the pressing member 20. Then, the two pressing pieces 20a, 20a are urged to open by a spring 20b to open downward,
When the drive shaft A is lifted to a predetermined set position when the gripper 4 on the transport pallet 3 is lifted,
C ₁ of the axially inward direction of the shaft body A ₁ of the portion the both pressing pieces 20
a, is inserted from below between 20a, the both pressing pieces 20a, 20a is closed by being pushed by the shaft main body A _1, axially inwardly of the end surface of the small diameter end C ₁ (right side of Figure 8) The two pressing pieces 20a, 20a were opposed to each other.

A movable member 22 is attached to the slider 21 so as to be vertically movable by a guide bar 22a and constantly urged upward by a spring 22b, and a lower end of the movable member 22 is bent outward in the axial direction. Bar 19 was fixed.

The slider 21 is supported by the bracket 2d via a pair of guide bars 21b, 21b so as to be able to advance and retreat in the axial direction. The first cylinder in which one end of a piston rod 23a is connected to the slider 21 is attached to the bracket 2d. 23 and the first cylinder
And a second cylinder 24 for pressing the other end of the piston rod 23a of the piston 23 inward in the axial direction via a lever 24a.
And axially outward of the piston rod 23a of the first cylinder 23 causes the contracting operation of the second cylinder 24 by forward into (downwardly in FIG. 7), the shaft main body A of the pressing member 20 is small-diameter end C ₁ A forward position in which the second cylinder 24 is extended by a predetermined amount beyond the predetermined fixed position relative to _{1 in} the axial direction, and in this state, the second cylinder 24 is extended to move the piston rod 23a inward in the axial direction through the lever 24a by the predetermined amount. Pushing back by the amount returns the pressing member 20 to the fixed position and the back bar.
19 intermediate position the lower end faces the upper portion of the small-diameter end C ₁ of the (illustrated position) by backward the piston rod 23a axially inwardly, the lower end of the back bar 19 of the small-diameter end C ₁ axis It can be moved to the retracted position where it is separated inward in the direction.

In the winding of 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 Even if you do n’t move
Small diameter end C ₁ is reliably pushed to the locked position. Next, return the slider 21 to the intermediate position, in response to the end face of the small diameter end C ₁ by the pressing member 20, to prevent displacement in the axial direction inside of the small-diameter end C ₁ due to the elastic restoring force of the boot C, small diameter end Clamp C ₁ in a fixed position.

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

Upon delivery of the guides D is where the starting end of the band D is fed into the first guide pieces 5 _1, the first guide piece 5 ₁ by the operation of the driving source 18 to the reduced diameter position as shown in FIG. 9 (a) advancing resumes feeding of the band D then returns the first guide piece 5 ₁ to expanded position. According to this, the first
Start end the guide piece of the band D by advancement of the guide piece 5 ₁
5 to ₁ of the inner peripheral surface curvature is corrected in a curved shape having a curvature that substantially matches, upon subsequent feeding, FIG. 9 (b) (c)
Small starting band D as shown in (d) is to slide along the second to the inner peripheral surface of the fourth guide piece 5 _2, 5 _3, 5 ₄ having the same curvature as the first guide portion 5 ₁ contact between the end C ₁ is prevented, the band D to the winding guide 5 is fed smoothly without receiving a contact resistance between the small diameter end C _1.

And when the beginning of the band D reaches the opening,
Each guide piece 5 ₁ ... 5 ₄ advanced into reduced diameter position by the cam on the cam shaft 13, the band D with tightening small diameter end C ₁ wound a winding guide 5 as contracted state, lowers the laser guide 6 The band D is cut with a cutter, and the start end and the end of the band D are further overlapped on the lower end of the back bar 19, and this overlapped portion is pushed down together with the back bar 19, as shown in FIG. 9 (e). And 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 moved in the axial direction from the back surface of the overlapping portion. The band guide D is pulled out inward, and finally, the winding guide 5 is returned to the expanded state and the laser guide 6 is raised.
Is completed.

The above example is the wound attaching device a band D to the small diameter end C ₁ of the boot C, it can be applied to the present invention the winding attaching device a band D to the large diameter end C _2, other than further boots The present invention can also be applied to a case where a band is wound around an object to be mounted.

Incidentally, it is also possible to omit the second band guide 16 ₂ of the above embodiment, and guides only the infeed of the band D to the winding guide 5 by first hand-guided 16 _1, but the band D
To improve the alignment accuracy of the start and end is better to features a second band guide 16 _2.

(Effects of the Invention) As is clear from the above description, according to the first and second aspects of the invention, the band can be smoothly fed into the winding guide without receiving contact resistance with the object to be mounted, This has the effect of reliably preventing winding errors due to band clogging.

[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, and FIG. 3 is a front view of a winding guide arrangement portion viewed from line III-III in FIG. FIG. 4 is a plan view taken along the line IV-IV of FIG. 3, FIG. 5 is a side view cut along the line VV of FIG. 3, and FIG. 6 is a view taken along the line VI-VI of FIG. FIGS. 7 and 8 are sectional views taken along lines VII-VII and VIII-VIII of FIG. 6, respectively, and FIGS. 9 (a) to 9 (e) are front views of the arrangement portion of the back bar and the pressing member. 10 (a) to 10 (f) are explanatory views showing a conventional band winding procedure, and FIG. 11 is a longitudinal sectional view of a drive shaft. C ₁ ...... boot 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 15 ...... side plate, 15a … Spring 16 ₁ , 16 ₂ … Band guide 18… Drive source for first guide piece

 ──────────────────────────────────────────────────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 winding guide comprising a plurality of circumferentially divided guide pieces surrounding an object to be attached, leaving an opening for inserting a band on one side thereof. Can be moved back and forth in synchronism with each other in the radial direction of the mounted object, so that it can be switched between an expanded state surrounding the mounted object with a relatively large gap and a reduced diameter state that reduces this gap. After the band is fed into the inside of the winding guide from the opening and the band is wound around the object to be mounted, the band is shrunk. In the method in which the band is wound around the object to be mounted in the diameter state, at least when the start end of the band is fed to the first guide piece located at the upstream end in the feeding direction of the band among the id pieces, Place the first guide piece radially inward of the object Is advanced into reduced diameter position, then the first
A band winding method, wherein the guide piece is returned to a radially outwardly enlarged position to resume feeding of the band. 2. A band winding device for winding a band around an outer periphery of an object to be mounted, comprising: a winding guide which surrounds the object to be mounted on one side of the periphery thereof except for an opening for inserting a band; Band feeding means for feeding the band inside the winding guide through the portion, the winding guide is constituted by a plurality of guide pieces divided in the circumferential direction, these guide pieces in the radial direction of the mounting object By being able to advance and retreat in synchronization with each other, the winding guide can be switched between a diameter-enlarged state that surrounds the mounted object with a relatively large gap and a diameter-reduced state that reduces the gap, In a configuration in which the winding guide is set to an enlarged diameter state, a band is fed into the inside of the winding guide by the band supply means, and the winding guide is reduced in diameter to tighten the band around an object to be mounted. Upstream of the band feeding direction A band which is provided with a drive source for temporarily advancing the first guide piece located at the first position to a radially inwardly reduced diameter position when the start end of the band is fed into the first guide piece. Winding device.