JPH07251336A - Clamping device of clamp band - Google Patents

Abstract

PURPOSE:To provide a clamping device of a clamp band, by which work efficiency can be improved and reliability of work can be improved. CONSTITUTION:A band fixing device is moved, with a drive shaft 11 held thereon in the axial direction to be axially positioned to a loosely fitted clamp band 21 by an axial positioning mechanism 109, and the drive shaft 11 is rotated to circumferential-position the projecting part of the clamp band 21 by a circumferential positioning mechanism 124. After that, the projecting part of the clamp band 21 is clamped and deformed while being centered by a pair of clamping claws 150. Thus, the clamp band 21 is reduced in diameter so that a dust-proof boot 14 is fixed on the drive shaft 11 by the clamp band 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp band tightening device for fixing a dustproof boot of a constant velocity joint mounted on a drive shaft, for example.

[0002]

2. Description of the Related Art FIG. 21 is a partially cutaway perspective view showing a front axle of a vehicle, FIG. 22 is a cross section of a drive shaft to which a constant velocity joint and a dustproof boot are fixed, and FIG. 25 is a perspective view showing the tightened state of the dustproof boot, FIG. 24 is a perspective view showing the tightened state of the rubber dustproof boot attached to the drive shaft, and FIG.
The outline of the conventional clamp band tightening method is shown in FIG.

As shown in FIGS. 21 and 22, the drive shaft 11 has a constant velocity joint (Birfield Joint) 12 mounted at one end on the wheel side, and a constant velocity joint at one end on the differential side. Joint (Tripod Joint) 13
, And dustproof boots 14 and 15 are attached to the constant velocity joints 12 and 13, respectively. A dynamic damper 16 is attached to the middle of the drive shaft 11. The constant velocity joint 12 at one end of the drive shaft 11 is connected to a hub 18 rotatably supported by a knuckle 17, and a wheel (not shown) is attached to the hub 18. In addition, the constant velocity joint 13 at the other end of the drive shaft 11
Is connected to the transmission via a differential (not shown).

The illustrated dustproof boot 14 is made of resin and is formed in a hollow bellows shape. The small diameter portion 14a is fitted on the drive shaft 11 and fastened and fixed by a small diameter clamp band 21, and the large diameter portion 14b. Is fitted to the outer diameter of the constant velocity joint 12 and fastened and fixed by a large diameter clamp band 23. On the other hand, the illustrated dustproof boot 15 is made of rubber and is formed in a hollow bellows shape. The small diameter portion 15a is fitted to the drive shaft 11 and fastened and fixed by the small diameter clamp band 22, and the large diameter portion 15b is It is fitted to the outer diameter of the constant velocity joint 13 and fastened and fixed by the large diameter clamp band 24.
In addition, the dynamic damper 16 is the drive shaft 11
And is clamped and fixed by the clamp band 25.

Small diameter portion 14a of the dustproof boot 14 made of resin
Small clamp band 21 to engage and tighten the outer diameter of
23, a plurality of locking claws 21a are provided at one end, as shown in FIG.
The belt-shaped member 21c having a plurality of locking holes 21b formed at the other end is curved, and the locking claw 21a is locked in the locking hole 21b to form an annular shape. A protruding portion 21d that is curved and protrudes outward is formed on the portion. On the other hand, the small diameter clamp band 22 that engages with the outer diameter of the small diameter portion 15a of the rubber dustproof boot 15 and is tightened is
As shown in FIG. 24, the lever 22b is flexibly fixed to the annular member 22a and the lever 22b is bent.
A pair of tongue pieces 22c for holding the tip of b are formed.

[0006]

The small-diameter clamp band 21 described above has the small-diameter portion 14a of the dustproof boot 14 made of resin.
The clamp band 21 is reduced in diameter and fixed by engaging the outer diameter of the clamp band 21d and deforming the protrusion 21d by pressing it. Conventionally, as shown in FIG. 25, this fixing work is performed with the small diameter clamp band 21 engaged with the outer diameter of the small diameter portion 14a of the dust protection boot 14.
When 4 is pressed into the drive shaft 11 and the protruding portion 21d is deformed by pressing with pliers (hydraulic pliers) P, the inner diameter of the clamp band 21 is reduced. 14 can be fixed to the drive shaft 11.

However, in the above-described conventional clamp band tightening method, although the hydraulic pliers P are used, the operator directly performs the clamp band tightening work, so There is a problem in that this burden is heavy and the working time is long.

In order to solve such a problem, a clamp band is automatically mounted as disclosed in Japanese Patent Laid-Open No. 1-33.
There is one disclosed in Japanese Patent No. 10828. However,
The "apparatus for automatically attaching a clamp" disclosed in Japanese Patent Application Laid-Open No. 1-310828 is for automatically supplying and fixing a clamp band to an axle boot. This is forcibly performed by the member, and if the holding by the finger member is released thereafter, there is a risk that the positional relationship between the supplied clamp band (ears) and the tightening tool may be displaced.

That is, the axle boot is generally formed of an elastic material such as rubber, and when the axle boot is attached (press fitted) to the axle shaft, the two are in a close contact state, and the axle boot is spring back. Therefore, the mounting position varies. On the other hand, when the clamp band is mounted on the axle boot, the mounting position of the clamp band varies due to the same reason. Therefore, even if it is always moved to the same position and the ears of the clamp band are tried to be pinched by the tightening tool, the positions of the clamp bands (ears) are not at the same position, and the ears of the clamp band can be reliably pinched. However, there is a possibility that defective products may be generated.

The present invention is intended to solve such problems, and an object of the present invention is to provide a clamp band tightening device which improves workability and improves work reliability.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a clamp band tightening device of the present invention comprises a protruding part which is curved and protrudes outward of an annular clamp band loosely fitted to a mounting shaft part. In a clamp band tightening device that compresses and deforms the clamp band to reduce the inner diameter of the clamp band and fix the clamp band to the mounting shaft portion, a holding means for holding the mounting shaft portion, and a holding means held by the holding means. Rotating means for rotating the mounting shaft portion in the circumferential direction, a tightening device main body movably supported along the axial direction of the mounting shaft part, and movement for moving the tightening device main body in the axial direction. Means, an axial positioning means for axially positioning the mounting shaft portion with respect to the clamp band by moving the tightening device body in the axial direction by the moving means, and a rotating means for surrounding the mounting shaft portion. Person And a circumferential direction positioning means for positioning the projecting portion of the clamp band with respect to the tightening device body by rotating to the axial direction, and the projection of the clamp band positioned at a predetermined position by the axial direction positioning means and the circumferential direction positioning means. It is characterized in that it is provided with a pressing means for reducing the diameter of the clamp band by pressing and deforming the portion.

Further, in the clamp band tightening device of the present invention, in the clamp band tightening device according to claim 1, the axial positioning means is arranged on the tightening device body in the same direction as the moving direction of the tightening device body. An axial positioning member that is movably supported along the direction and that is moved by contacting the end surface of the clamp band that is loosely fitted to the mounting shaft portion; and a detection sensor that detects the position of the axial positioning member, Stop means for stopping the movement of the tightening device body based on the output of the detection sensor.

Further, in the clamp band tightening device of the present invention, the circumferential positioning means positions the protruding portion of the clamp band at a position substantially opposite to the clamping means, and the temporarily positioned clamp. The provisional positioning means is a detection sensor for detecting the protrusion of the clamp band, while the main positioning means has the main positioning means for positioning the projection of the band at a position directly facing the compression means. It is characterized in that it is a pair of compressing claws which can be opened and closed by a compressing means for reducing the diameter of the clamp band by compressing and deforming the protruding portion of the clamp band.

Further, in the clamp band tightening device of the present invention, in the clamp band tightening device according to the first aspect, the pressing means moves up and down with respect to the protruding part of the clamp band so as to be able to approach and separate from each other. A supported main body, a pair of opening and closing claws provided at the lower end of the main body for pressing the protruding portion of the clamp band, a driving means for opening and closing the pair of claws, and the main body. A fluid cylinder for moving up and down, a fluid supply means for supplying fluid to one chamber of the fluid cylinder for moving the main body upward, and a fluid supply means for supplying fluid to one chamber of the fluid cylinder by the fluid supply means. It is characterized by comprising a pressure fluid changing means for changing the pressure.

The clamp band tightening device of the present invention is the clamp band tightening device according to claim 4, wherein the other chamber of the fluid cylinder is open to the outside.
The main body is characterized by being movable upward regardless of the operating states of the fluid supply means and the fluid cylinder.

Further, in the clamp band tightening device of the present invention, in the clamp band tightening device according to claim 4, the portion of the main body on which the pair of compression claws are mounted is swingable in the horizontal direction. It is characterized by that.

The clamp band tightening device of the present invention is the clamp band tightening device according to claim 4, wherein the main body is provided with a load cell for detecting a reaction force acting on the pair of pressing claws. The driving means is characterized in that the driving is stopped and the rotation is reversed based on the detected load of the load cell.

[0018]

In order to fix the clamp band to the mounting shaft portion, while the mounting shaft portion is held by the holding means, the tightening device body is moved in the axial direction by the moving means and the mounting shaft portion is moved by the axial positioning means. The clamp band is loosely fitted to the clamp band in the axial direction, and the mounting shaft portion is rotated in the circumferential direction by the rotating means to position the protruding portion of the clamp band in the tightening device body by the circumferential direction positioning means. When the protruding portion of the clamp band positioned at a predetermined position is pinched and deformed by the pinching means, the inner diameter of the clamp band is reduced and the clamp band is fixed to the mounting shaft portion. Even if there are variations in the position of the clamp band loosely fitted in the clamp band, the protrusion of the clamp band and the clamping means are accurately positioned, and the clamp band Properly it is fixed.

When positioning the clamp band in the axial direction, the tightening device body is moved in the axial direction, and when the axial positioning member comes into contact with the end surface of the clamp band loosely fitted to the mounting shaft portion, the clamp band is stopped and tightened. Start relative movement with respect to the attached device body. When the detection sensor detects the position of the axial positioning member and detects the relative movement with respect to the tightening device body, the stop means stops the movement of the tightening device body based on the output of the detection sensor, and the clamp The tightening device body can be accurately positioned in the axial direction with respect to the band with a simple configuration.

When circumferentially positioning the protruding portion of the clamp band, when the mounting shaft portion is rotated in the circumferential direction, a detection sensor as temporary positioning means detects the protruding portion of the clamp band, and the clamp band is projected. By positioning the portion at a position substantially opposite to the clamping means, and by closing the pair of opening and closing clamping claws as the main positioning means from the opened state to the protruding portion of the temporarily positioned clamp band,
The clamp band is slightly rotated in the circumferential direction so that the protruding portion thereof is positioned at a position directly facing the compressing means, and the protruding portion of the clamp band is accurately positioned in the circumferential direction with respect to the compressing means, and By using a pair of openable and closable clamping claws as the main positioning means for the main positioning, it is possible to perform the positioning with the existing configuration without separately providing the main positioning.

In order to fix the clamp band to the mounting shaft portion, when the fluid supplied from the fluid supply means to one chamber of the fluid cylinder is set to a low pressure by the pressure fluid varying means, the fluid cylinder is operated to move the main body downward. The tips of the pair of pressing claws come into contact with the outer peripheral surface of the clamp band to increase the pressure of the fluid supplied to one chamber of the fluid cylinder to stop the downward movement of the main body due to the operation of the fluid cylinder. In this state, when the pair of pressing claws are driven to be closed by the driving means, the pressing claws deform by compressing the clamping band while centering the protruding part of the clamp band, thereby reducing the diameter of the clamp band and attaching it to the mounting shaft part. The protrusions of the clamp band are continuously positioned and deformed and fixed by the pair of pressing claws.

When the projecting portion of the clamp band is deformed by pushing, when the pair of pressing pawls are driven to be closed while the tips of the pair of pressing pawls are in contact with the outer peripheral surface of the clamp band, the pressing pawls are closed. Although the protrusion of the clamp band is pressed while being centered, since the other chamber of the fluid cylinder is open to the outside, the main body can move upward regardless of the operating state of the fluid supply means and the fluid cylinder. Since the pressing claws are retracted upward along the outer peripheral surface of the clamp band, an unreasonable load is not applied to both and smooth operation is possible.

When the pair of compression pawls position the protrusions of the clamp band, even if the protrusions of the clamp band are not surely centered to the central position, the portion of the main body where the pair of compression pawls are mounted. Is swingable in the horizontal direction according to the position of the protrusion of the clamp band, so that the pair of pressing claws moves according to that position.
The protrusion of the clamp band is reliably pressed by the pair of pressing claws.

When the projecting portion of the clamp band is deformed by pushing, the driving means is driven to close the pair of compressing claws whose tips are in contact with the outer peripheral surface of the clamp band to center the projecting portion of the clamp band. While deforming by pressure,
At this time, the load cell detects the reaction force acting on the pair of pressing claws, and the driving means stops the driving means based on the detected load of the load cell to recognize the completion of the work and stop the driving. Since a great load does not act on the pressing claw, smooth operation is possible.

[0025]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a front view of the entire band fixing device in the clamp band tightening device according to one embodiment of the present invention.
2 is a plan view of the entire band fixing device, FIG. 3 is a side view of the resin boot band fixing device of the present embodiment, and FIG. 4 is a side view of the rubber boot band fixing device.
9 to 9 show the details of the main part of the band fixing device for resin boots in FIG. 5, the VI-VI cross section of FIG. 5 in FIG. 5, and the line VII-VII of FIG. 5 in FIG. Section, FIG. 8 is a section taken along line VIII-VIII of FIG. 3, and FIG. 9 is a section taken along line IX-IX of FIG.
Sections, FIGS. 10 to 16 relate to a band fixing device for rubber boots, and FIG. 10 shows a section XX in FIG. 4 and FIG.
XI-XI cross section, FIG. 12 XII-XIII plane, FIG. 13 XIII-XIII cross section, FIG. 14 XIV-XIV cross section, FIG. 15 XV-XV cross section, FIG. 16 XVI of Figure 15
FIG. 17 is a plan view showing an assembly line of a drive shaft including the clamp band tightening device of the present embodiment, FIG. 18 is a front view of the clamp band tightening device, and FIG. 19 is a clamp band tightening device. Is shown in a plan view, and FIG. 20 is a side view of the clamp band tightening device. It should be noted that the members having the same functions as those of the related art are designated by the same reference numerals, and the duplicate description will be omitted.

In the embodiments described below, the clamp band tightening device of the present invention is applied to a device for fixing the dustproof boot of a constant velocity joint mounted on the drive shaft, and the drive shaft etc. The case of tightening the small-diameter clamp band that fixes and fixes the small-diameter portion of the dustproof boot attached to the quick joint will be described.

First, the assembly line of the drive shaft of this embodiment will be described. As shown in FIG. 17, at one end of the floor, supply stands 31 and 32 for supplying two types of drive shafts 11 having different lengths are provided side by side. Is connected to a first transfer device 33 for transferring the horizontal position. A supply table 34 for supplying the dynamic damper 16 and two types of boots 14, 15 (for BJ,
Supply bases 35 and 36 for supplying (for TJ) are connected, and the dynamic damper 16 of the supply base 34 and each supply base 3 are connected.
An articulated mounting robot 37 for mounting the boots 14, 15 of 5, 36 on the drive shaft 11 on the first transfer device 33.
Is provided. Then, the clamp band tightening device 38 and the boots 14 and 15 which are located in front of and behind the multi-joint mounting robot 37 on the first transfer device 33 and fix the dynamic damper 16 by tightening the clamp band 23.
A clamp band tightening device 39 is provided for tightening and fixing the small-diameter portion with the clamp bands 21 and 22.

A second transfer device 40 for transferring the drive shaft 11 in a vertical state is installed on the floor, and between the downstream side of the first transfer device 33 and the upstream side of the second transfer device 40. The second drive device 40 is provided with the horizontal drive shaft 11 on the first carrier device 33 in the vertical state.
A multi-joint transfer robot 41 for transferring to the robot is provided.
This second transfer device 40 includes two transfer shuttles 40a, 4
0b, and a reversing device 42 for reversing the vertically supported drive shaft 11 by 180 ° is installed in the middle thereof. Then, the second transfer device 40
At the upstream side of the reversing device 42, the constant velocity joint 1
The supply table 43 for supplying 2 is connected and the supply table 4 is supplied.
A multi-joint mounting robot 45 for mounting the constant velocity joint 3 of No. 3 to the drive shaft 11 on the second transfer device 40 is provided, and further adjacent to the multi-joint mounting robot 45, joint inspection and a large diameter portion of the boot 14 are provided. A clamp band tightening device 46 is provided for tightening and fixing 14b with the clamp band 23.

In the second transport device 40, the reversing device 42
On the downstream side of the supply stand 47 for supplying a spider (not shown)
Also, a supply base 48 for supplying the constant velocity joint 13 is connected. Then, an articulated attachment robot 49 for attaching the spider to the drive shaft 11 on the second transfer device 40 and a pull-out inspection device 50 are provided in the vicinity of the supply table 47, and the constant velocity joint 13 is provided in the vicinity of the supply table 48. An articulated attachment robot 51 to be attached to the drive shaft 11 on the second transfer device 40 is provided. Further, the large diameter portion 15b of the boot 15 is adjacent to the articulated mounting robot 51.
A clamp band tightening device 52 is provided for tightening and fixing the clamp band with the clamp band 24. Also, the second
An articulated carry-out robot 53 for carrying out the drive shaft 11 on the assembled second carrier 40 is provided at the downstream end of the carrier 40.

Therefore, when the long-axis or short-axis drive shaft 11 is selected from the supply bases 31 and 32 and is carried into the first transfer device 33 and is transferred in a horizontal state by the first transfer device 33, first, The joint mounting robot 37 mounts the dynamic damper 16 on the supply table 34 on the drive shaft 11, and the clamp band tightening device 38 tightens the clamp band 25 to fix the dynamic damper 16. Next, the joint mounting robot 37 sets the boots 14 and 15 on the supply table 35 or 36 to the drive shaft 1
1, the clamp band tightening device 39 tightens the clamp bands 21 and 22 to fix the small diameter portions of the boots 14 and 15. Dynamic damper 16 and boots 1
The drive shaft 11 with the fixed numbers 4 and 15 is transferred from the horizontal state to the vertical state to the second transfer device 40 by the articulated transfer robot 41. On the upstream side of the second transfer device 40, the articulated mounting robot 45
The constant velocity joint 12 on 3 is attached to the drive shaft 11, and then a joint inspection is performed, and the clamp band tightening device 46 tightens the clamp band 23 to fix the large diameter portion of the boot 14.

When the work of assembling one end of the drive shaft 11 is completed, the reversing device 42 reverses the drive shaft 11 up and down by 180 °. Then, the second transfer device 40
On the downstream side of, the multi-joint mounting robot 49 mounts the spider on the supply table 47 on the drive shaft 11 and the pull-out inspection device 50 performs inspection work. Further, the multi-joint mounting robot 51 mounts the constant velocity joint 13 on the supply base 48 on the drive shaft 11, and the clamp band tightening device 52 tightens the clamp band 24 to fix the large diameter portion of the boot 15. Finally, the articulated carry-out robot 53 carries out the drive shaft 11 on the second transfer device 40, which has been completely assembled, from the second transfer device 40 to a predetermined position.

The clamp band tightening device 39 of the present embodiment incorporated in the drive shaft assembling line will be described below. As shown in FIGS. 18 to 20, the first transfer device 3 is provided below the first transfer device 33.
Drive shaft 1 conveyed to a predetermined position by 3
An elevating device 61 for raising 1 to a predetermined height from the transfer line is provided, and holding devices 62 for holding the drive shaft 11 raised to a predetermined height by the elevating device 61 are provided on both sides of the first transfer device 33. It is provided.

Two ascending / descending devices 61 are provided in accordance with the long and short drive shafts 11, and supporting pieces 68, 69 are attached to plates 66, 67 which are movable up and down by the cylinders 64, 65 with respect to the frame 63. Is configured. On the other hand, the holding device 62 holds the shaft end surface of the drive shaft 11 so as to hold it from both sides, and the movable tables 72 and 73 that can approach and separate from the frames 70 and 71 on both sides of the first transfer device 33. Is provided, and the moving tables 72 and 73 can be moved by cylinders 74 and 75, respectively. Then, holding shafts 78, 79 are mounted on the moving tables 72, 73 via brackets 76, 77, respectively.
Is rotatably supported, and one moving table 72
A motor 80 for rotating the holding shaft 78 is attached to the. The opposing tip ends of the holding shafts 78 and 79 are adapted to center the held drive shaft 11 and to fit the end portions of the drive shaft 11 so as to be integrally rotatable in the circumferential direction.

Further, the lifting device 61 and the holding device 62.
A gate-shaped frame 81 is installed so as to hang over both sides of the first transfer device 33 adjacent to the frame.
1 includes boots 14 and 15 of the drive shaft 11 along the axial direction of the drive shaft 11 on the first transfer device 33.
There are provided three band fixing devices 82, 83, 84 for tightening the clamp bands 21, 22 loosely fitted to the small diameter part of the. These three band fixing devices 82, 8
Of the three and 84, the band fixing device 82 tightens the clamp band 21 loosely fitted to the resin boot, and the band fixing devices 83 and 84 tighten the clamp band 22 loosely fitted to the rubber boot. It has a similar structure. In this embodiment, a plurality of types of drive shafts 11 are conveyed to one assembly line, and the band fixing device can be selectively used depending on the type.

That is, as shown in FIG. 18, in the drive shaft 11 held in a horizontal state, a TJ type constant velocity joint is mounted on the left shaft end side of the drive shaft 11, so that the dustproof boot is attached to it. The one made of rubber is applied together. On the other hand, a TJ type or BJ type constant velocity joint is selectively mounted on the right shaft end side of the drive shaft 11 depending on the vehicle model, so that the dustproof boot is also made of rubber or resin according to it. Is being applied. Therefore, the dustproof boot 15 made of rubber is provided on the left shaft end side of the drive shaft 11.
A band fixing device 84 for fixing the clamp band 22 for fastening the clamp band 22 is provided, and a band fixing device 82 for fixing the clamp band 21 for fastening the resin dustproof boot 14 and a rubber dustproof are provided on the right shaft end side of the drive shaft 11. Both of the band fixing devices 83 for fixing the clamp band 22 for tightening the boot 15 are provided. Hereinafter, a detailed description will be given with reference to the drawings.

As shown in FIGS. 1 to 4, the frame 81
A pair of parallel guide rails 92, 93 are laid on the upper surface of the mounting member 91 fixed to the upper part of the
A book guide rail 94 is laid, and three moving bodies 95, 96, 9 are provided on the guide rails 92, 93, 94.
7 is movably supported. Then, the moving body 95,
96 are connected by a connecting member 98, both are movable integrally, and can be driven by a servomotor 99 via a screw shaft (not shown). On the other hand, the moving body 97 is independently movable and can be driven by the servomotor 100 via a screw shaft (not shown). Then, the band fixing device 82 is attached to the moving body 95.
6, a band fixing device 83 is attached to the movable body 97, and a band fixing device 84 is attached to the moving body 97 so that the work can be performed by moving to a predetermined position. Hereinafter, each band fixing device 82, 83, 84 will be described in detail.

First, in the band fixing device 82, as shown in FIG.
To the guide rails 92, 93, 94 as shown in FIG.
A horizontal moving plate 101 is fixed to a side surface of a moving body 95 which is movably supported along the horizontal moving plate 101. The horizontal moving plate 101 has a pair of guide rails that are parallel to each other in the vertical direction.
102 is installed. The pair of guide rails 102 has a U-shaped cross section, and a vertical moving plate 104 is supported on the pair of guide rails 102 via a vertical guide 103 so as to be vertically movable. An air cylinder 105 is attached to the horizontal moving plate 101, and a tip end portion of a drive rod 106 of the air cylinder 105 is connected to a connecting portion 107 of the vertical moving plate 104. The vertical moving plate is driven by the air cylinder 105. The 104 is capable of reciprocating vertically.

At the bottom of the vertical moving plate 104, the lower bracket 1
08 is fixed, and an axial positioning mechanism 109 is attached to the lower bracket 108. In this embodiment, the dustproof boot 14 is mounted (press-fitted) on the drive shaft 11 with the clamp band 21 loosely fitted to the small diameter portion 14a thereof.
Since 4 is an elastic body, its mounting position varies. Therefore, it is necessary to position the device main body in the axial direction of the drive shaft 11 before performing the work of fixing the clamp band.

In this axial positioning mechanism 109, as shown in FIGS. 5 to 7, an axial positioning plate 110 for positioning the clamp band 21 has a pair of upper and lower moving shafts 111 fixed to its base end. Each of the fixed shafts 111 is movably fitted in a support cylinder 112 fixed to the lower bracket 108. A spring receiving cylinder 114, in which a compression spring 113 is installed, is attached to the axial positioning plate 110.
Support shaft 1 whose one end is fixed to the lower bracket 108 in 14
15, the compression spring 113 is stretched between the bottom of the spring receiving cylinder 113 and the flange 116 at the other end of the support shaft 115. Therefore, the axial positioning plate 110 can move in parallel with the axial direction of the drive shaft 11 by the pair of moving shafts 111, and is biased and supported in one direction (rightward in FIGS. 1 and 6). .

A fixed shaft 117 is fixed to the base end portion of the axial positioning plate 110 along the movement direction thereof, and dogs 118 and 119 are fixed to predetermined positions of the fixed shaft 117, while the fixed bracket 117 is fixed to the lower bracket 108. Is a detection sensor 12 that detects each dog 118, 119
0 and 121 are provided. Also, the axial positioning plate 110
A guide notch 122 that opens downward is formed at the tip end portion, and the inner diameter of this guide notch 122 is set to be larger than the outer diameter of the drive shaft 11 and smaller than the outer diameter of the dustproof boot 14. A projection 123 is fixed to the axial positioning plate 110, which is located around the guide notch 122 and comes into contact with the end surface of the small diameter portion 14a of the dustproof boot 14.

Therefore, the lower bracket 108 (moving body 9
5) together with the axial positioning plate 110 moves in the axial direction (upward in FIG. 7), the projection 123 of the axial positioning plate 110 comes into contact with the end surface of the small diameter portion 14a of the dustproof boot 14 and stops, that is, When the axial positioning plate 110 moves relative to the lower bracket 108, the positional relationship between the detection sensors 120 and 121 and the corresponding dogs 118 and 119 shifts to detect the relative movement between the two. Then, a stop mechanism (not shown) stops driving the servo motor 98 based on the outputs of the detection sensors 120 and 121, and stops the movement of the lower bracket 108 (moving body 95), thereby completing the axial positioning. To do.

A temporary circumferential positioning mechanism 124 is mounted on the lower bracket 108 described above. In this embodiment, as described above, the clamp band 21 is mounted on the drive shaft 11 while being loosely fitted in the small diameter portion 14a of the dustproof boot 14, and at this time, the clamp band 21 is projected. The position of the portion 21d varies. Therefore, it is necessary to position the clamp band 21 in the circumferential direction before pressing the protruding portion of the clamp band 21 and pressing the protrusion 21d.

In this temporary circumferential positioning mechanism 124,
Two sets of photoelectric sensors 125 and 126 are mounted on the axial positioning plate 110 at opposite sides of the guide notch 122 via mounting brackets. This photoelectric sensor 125, 1
Reference numeral 26 is for detecting the protruding portion 21d of the clamp band 21, and is set so that the photoelectric scans slightly above the guide notch 122.

Therefore, when the drive shaft 11 held by the holding device 62 is rotated by the motor 80 and the dustproof boot 14 is rotated together with the drive shaft 11,
The clamp band 21 loosely fitted in the small diameter portion 14a of the dustproof boot 14 also rotates, and the protruding portion 21d thereof moves upward. When the photoelectric sensors 125 and 126 detect the protruding portion 21d, a stop mechanism (not shown) stops driving the motor 80 based on the output of the photoelectric sensors 125 and 126, and the drive shaft 11 (clamp band 21) is moved. By stopping, positioning of the clamp band 21 in the circumferential direction is completed.

Further, as shown in FIGS. 1 to 3, 8 and 9, the clamp band 21 is attached to the vertical moving plate 104 described above.
A claw mechanism 127 for performing a circumferential temporary provisional positioning operation and a clamping operation for clamping and deforming the protruding portion 21d of the clamp band 21 by a common mechanism is mounted. That is, an upper bracket 128 is fixed to the upper part of the vertical moving plate 104, and a pair of parallel vertical support shafts 129 are supported by the upper bracket 128 so as to be vertically movable.
An upper support plate 130 is fixed to the upper end of 129, and a lower support plate 131 is fixed to the lower end thereof. In addition, the vertical moving plate 104
The air cylinder 133 is attached to the top of the
Is fixed, and this air cylinder 133 has a drive rod 134 extending downward, and a dog is attached to the drive rod 134.
While the 135 and 136 are fixed, the detection sensors 138 and 139 are fixed to the bracket 137 of the main body of the air cylinder 133. The air cylinder 133 is connected to a fluid supply source (not shown) that supplies fluid to a chamber below a piston (not shown) so as to move a pair of pressing claws 145, etc., which will be described later, and controls the pressure of the supplied fluid. It can be switched between high pressure and low pressure. The chamber above the piston in the air cylinder 133 is open to the outside.

The tip end of the drive rod 134 of the air cylinder 133 is connected to the upper support plate 130 by a horizontal shaft 140, and the connecting piece 141 is coaxially connected to the upper support plate 130 by the horizontal shaft 140. This connecting piece 141 has an upper flange 1
42 are connected, and the upper flange 142 is connected to the lower flange 144 via a pair of connecting rods 143. A hydraulic cylinder 146 having a load cell 145 is mounted between the upper flange 142 and the lower flange 144. ing. The hydraulic cylinder 146 has a drive rod 147 and a drive block 148 extending downward, and the drive block 148 is vertically movably fitted in a hollow portion of the lower flange 144 and extends downward in the drive block 148. A tapered claw actuating piece 149 is attached.

A lower flange 144 has a lower end rotatably connected with an intermediate portion of a pair of openable claw claws 150, and a base 151 on which a roller 151 which comes into contact with a claw actuating piece 149 is attached. A claw portion 152 for pressing the protruding portion 21d of the clamp band 21 is integrally formed at the tip, and a compression spring 153 interposed between a pair of claws 145 urges the claw portion 147 in the opening direction. It is supported.

The lower flange 144 and the pair of pressing claws 1
The 50 and the like are horizontally swingable around a horizontal shaft 140 as a fulcrum, and the left and right convex portions 154 of the lower flange 144 are biased and held at predetermined positions by a pair of springs 155 of the lower support plate 131. It is possible to absorb variations in the position of the protruding portion 21d of the clamp band 21. However, if there is little variation in the position of the protruding portion 21d, the bolt 156
This swinging can be disabled by tightening the and tightening the left and right convex portions 154 of the lower flange 144.

Therefore, normally, the air cylinder 133 is supplied with high-pressure air to the chamber below the piston, and the load cell 14
5 and the hydraulic cylinder 146, the pair of pressing pawls 150 and the like are in the raised position, and when the air in the air cylinder 133 is switched to low pressure air, the load cell 145, the hydraulic cylinder 146, the pair of pressing pawls 150 and the like are moved by their own weight. To descend. Then, when the claw portion 152 of the pressing claw 150 comes into contact with the outer peripheral surface of the clamp band 21, the detection sensors 138 and 139 detect the dogs 135 and 136, and the inside of the air cylinder 133 is switched to high pressure air again to descend. It can be stopped and held at a position where the claw portion 152 of the pressing claw 150 is in contact with the outer peripheral surface of the clamp band 21. When the hydraulic cylinder 146 is driven at this position to lower the pawl operating piece 149 via the drive rod 147 and the drive block 148, the pair of pressing pawls 150 rotate against each other against the compression spring 153, and each pawl portion.
152 can approach and can clamp the protrusion 21d of the clamp band 21.

Next, the band fixing devices 83 and 84 will be described, but they have substantially the same structure and are mounted symmetrically. In the following, one of the band fixing devices 83 will be described.
Will be described only. In the band fixing device 83, as shown in FIGS. 1, 3, and 4, the guide rail 9
Moving body 9 movably supported along 2, 93 and 94
A horizontal moving plate 161 is fixed to the side surface of the No. 7, and a pair of guide rails 162 that are parallel to each other along the vertical direction are attached to the horizontal moving plate 161. The pair of guide rails 162 has a U-shaped cross section, and the pair of guide rails 162 has a vertical moving plate through a vertical guide 163.
164 is movably supported in the vertical direction. And
An air cylinder 165 is attached to the horizontal moving plate 161, and the tip end portion of the drive rod 166 of the air cylinder 165 is a vertical moving plate.
The vertical moving plate 164 is connected to the connecting portion 167 of the connecting portion 164 so that the vertical moving plate 164 can reciprocate in the vertical direction.

A box-shaped side bracket 168 is fixed to the vertical moving plate 164, and an axial positioning mechanism 169 is attached to the lower portion of the side bracket 168. In this axial positioning mechanism 169, as shown in FIG.
As shown in FIG. 11, a pair of moving shafts 171 are fixed to the upper end of an axial positioning plate 170 for positioning the clamp band 22, and each fixed shaft 171 is attached to a side bracket 168.
It is movably fitted in a support cylinder 172 fixed to the.
A spring receiving cylinder 174 in which a compression spring 173 is installed is attached to the axial positioning plate 170, and a support shaft 175 having one end fixed to a side bracket 168 is inserted into the spring receiving cylinder 174. 173 is the bottom of the spring receiving cylinder 173 and the support shaft 17
It is stretched between the other end of the flange 5 and the flange 176. Therefore, the axial positioning plate 170 can move in parallel with the axial direction of the drive shaft 11 by the pair of moving shafts 171, and is biased and supported in one direction (upward in FIGS. 10 and 11). .

A spring bearing 173 integrated with the axial positioning plate 170
A projecting plate 177 is fixed to this, and a dog 178 is fixed to a predetermined position of this projecting plate 177, while detection sensors 179 and 180 for detecting the dog 178 are provided on the side bracket 168. Further, the axial positioning plate 170 is formed with a guide notch 181 that opens downward at the lower end, and the inner diameter of this guide notch 181 is larger than the outer diameter of the drive shaft 11, and
It is set smaller than the outer diameter of the dustproof boot 15.

Therefore, the side bracket 168 (the moving body 9
7), the axial positioning plate 170 moves in the axial direction (upward in FIG. 10), and the axial positioning plate 170 comes into contact with the end surface of the small diameter portion 14a of the dustproof boot 15 and stops, that is, the side bracket 168. When the axial positioning plate 170 moves relative to the dogs 17 corresponding to the detection sensors 179 and 180.
Relative movement between the two is detected by shifting the positional relationship with 8. The stop mechanism (not shown) is the detection sensor.
Positioning in the axial direction is completed by stopping the driving of the servo motor 100 based on the outputs of 179 and 180 and stopping the movement of the side bracket 168 (moving body 97).

As shown in FIG. 4, a circumferential positioning mechanism 182 is attached to the side bracket 168 described above. In this circumferential positioning mechanism 182, as shown in FIGS.
As shown in FIG. 5, a hydraulic cylinder 184 is attached to the side bracket 168 via a mounting plate 183, and a support piece 187 is attached to the tip end portion of a drive rod 185 extending below it via a connecting bracket 186. It is fixed. A base end portion of a circumferential positioning piece 189 is pivotally attached to the support piece 187 by a support pin 188, and a tip end portion of the circumferential positioning piece 189 extends to the outer peripheral portion of the clamp band 22. The circumferential positioning piece 189 is biased counterclockwise in FIG. 12 by the compression spring 190 interposed between the circumferential positioning piece 189 and the support piece 187, and is held at a predetermined position by the stopper 191. A detection sensor 192 that detects the operation of the circumferential positioning piece 189 is attached to the support piece 187. Further, the dog 19 is attached to the drive rod 185 of the hydraulic cylinder 184.
While the 3 is fixed, the bracket of the hydraulic cylinder 184 body
Detection sensors 195 and 196 are fixed to 194.

Therefore, the hydraulic cylinder 184 is driven to move the drive rod 185 downward, and the detection sensors 195 and 196 are moved to the dog 1
By detecting 93 and stopping the hydraulic cylinder 184, the circumferential positioning piece 189 is held at a predetermined lowered position. Then, the drive shaft 11 held by the holding device 62 is rotated by the motor 80, and the drive shaft 11 is rotated.
At the same time, when the dustproof boot 15 is rotated clockwise in FIG. 12, the clamp band 22 loosely fitted to the small diameter portion 15a of the dustproof boot 15 also rotates in the same direction, and the fixing piece 2 thereof is fixed.
2c moves upward. Then, this fixed piece 22c
Contacts the tip of the circumferential positioning piece 189, and the circumferential positioning piece 189 uses the support pin 188 as a fulcrum to compress the compression spring 190.
Counterclockwise, it rotates clockwise in FIG. The detection sensor 192 detects the operation of the circumferential positioning piece 189, a stop mechanism (not shown) stops driving the motor 80 based on the output of the detection sensor 192, and the drive shaft 11
By stopping the movement of the (clamp band 22), positioning of the clamp band 22 in the circumferential direction is completed.

As shown in FIGS. 1 and 4, the side bracket 168 is a lever bend for bending the lever 22b of the clamp band 22 which is positioned and held at a predetermined position by the axial positioning mechanism 169 and the circumferential positioning mechanism 182. A mechanism 197 is provided. That is, the middle portion of the bending lever 199 is attached to the side bracket 168 by the pivot 198 and is rotatable. And this folding lever 19
A drive rod 201 of a hydraulic cylinder 200 mounted on a side bracket 168 is connected to the base end of 9 while a bending lever is attached.
A bending roller 202 for bending the lever 22b of the clamp band 22 is attached to the tip end of 199. Also,
A dog 203 is attached to the tip of the drive rod 201 of the hydraulic cylinder 200.
Is fixed to the side bracket 168 while the detection sensor 2
04 and 205 are fixed.

Therefore, when the hydraulic cylinder 200 is operated to extend the drive rod 201, the bending lever 199 rotates about the pivot 198 in the clockwise direction in FIG.
2 pushes the lever 22b of the clamp band 22, and the lever 22b can be bent until it contacts the annular member 22a of the clamp band 22.

A pair of rocking pieces 206, 207 are rotatably provided on the side bracket 168 by pivots 208, 209. The rocking pieces 206, 207 are provided with a clamp band 22 and a lever 22b. A band pressing mechanism 212 having a pair of pressing rollers 210 and 211 for holding it in a bent state, and a tongue of the clamp band 22 for fixing and holding the bent lever 22b along the outer periphery of the clamp band 22. Caulking mechanism 21 for bending and crimping the piece 22c
Three are provided.

That is, as shown in FIGS. 4 and 14, the pair of rocking pieces 206 and 207 are respectively two levers 206.
a, 206b, 207a, 207b are connected by connecting members 214, 215, and pivots 208, 209 fixed to the upper ends thereof
Is rotatably supported by the side bracket 168. One end of a connecting lever 216 is fixed to each of the pivots 208 and 209, and the other end of the connecting lever 216 is connected to the connecting lever 2
A drive rod 219 of a hydraulic cylinder 218 mounted on a side bracket 168 is connected via 17. Further, the lower ends of the swinging pieces 206 and 207 are provided with pressing rollers 210 and 211, respectively.
Are freely rotatably mounted by means of pivots 220 and 221, and one presser roller 210 is thinly constrained to the other presser roller 211. A guide groove 223 that slidably fits into the guide protrusion 222 of the side bracket 168 is formed at the lower end of each rocking piece 206, 207.
It prevents axial deflection of the pivots 208 and 209 when the 207 swings. The dog 224 is fixed to the drive rod 219 of the hydraulic cylinder 218, while the detection sensors 225 and 226 are fixed to the side bracket 168.

Accordingly, when the hydraulic cylinder 218 is actuated to extend the drive rod 219, the pivot 208 and the swing piece 206 are swung counterclockwise in FIG. 4 via the connecting levers 217 and 216 in the counterclockwise direction. Each of the pieces 207 can be rotated in the clockwise direction in FIG. 4, whereby the pair of pressing rollers 210 and 211 are brought close to each other and the clamp band 2 is moved.
It is possible to press the lever 2 and press the lever 22b bent by the bending lever 199 by the one thin pressing roller 210.

By the way, in this embodiment, the tongue piece 22c of the clamp band 22 is bent to bend the lever 2
The crimping mechanism 213 that fixes and holds 2b along the outer peripheral portion of the clamp band 22 is a temporary crimping mechanism that bends the tongue piece 22c of the clamp band 22 to a position at which the lever 22b of the bent clamp band 22 can be prevented from returning. 227 and the provisionally crimped tongue piece 22c to the lever 2
2b has a book crimping mechanism 228 that bends until it is tightly held on the outer peripheral portion of the clamp band 22, and the provisional crimping mechanism 227 has a pair of clamping pawls 229 that deform the tongue piece 22c of the clamp band 22 by clamping. , 230, and the thick crimping mechanism 228 shares the other thick pressing roller 211 of the band pressing mechanism 212 that presses and deforms the temporarily crimped tongue piece 22c.

That is, the extending portion 231 integrated with the one swing piece 206.
Is provided with a pair of pivot pins 23 that are orthogonal to the pivot axis of the press roller 210.
The intermediate portions of the pair of pressure levers 234 and 235 are rotatably attached by 2, 233, and the rollers 236 and 237 are attached to the base end portions of the pair of pressure levers 234 and 235, respectively. At the tip of the compression levers 234 and 235, the compression claws 229 and 2 are attached.
30 is installed. The pressing claws 229 and 230 are shown in FIG.
As shown in detail in Fig.
It is located on both sides of 0 and is urged in a direction to open each other by a compression spring (not shown). Further, the intermediate portion of the operating lever 239 is pivotally supported by the connecting member 214 of the swinging piece 206, and the base end portion of the operating lever 239 of the drive rod 241 of the hydraulic cylinder 240 mounted on the connecting member 214. While the tip ends are connected, the actuating piece 242, which has a tapered shape and is inserted between the rollers 236 and 237 of the pressing levers 234 and 235, is attached to the tip end of the actuating lever 239 by a mounting pin 243. There is. The dog 244 is fixed to the drive rod 241 of the hydraulic cylinder 240, while the detection sensors 245 and 246 are fixed to the connecting member 214.

Therefore, when the hydraulic cylinder 240 is actuated to extend the drive rod 241, the actuating piece is actuated via the actuating lever 238.
242 is moved forward (to the right in FIG. 15), each roller 236,
One of the pressing levers 234 can be rotated in the clockwise direction in FIG. 15 and the other pressing lever 235 in the counterclockwise direction in FIG. 15 via 237, whereby a pair of the pressing claws 229 can be rotated. , 230 are closed and the tongue piece 22c of the clamp band 22 positioned at a predetermined position is pinched with the bent lever 22b positioned therebetween, and the tongue piece 22c can be bent at a predetermined angle.

Then, with the tongue piece 22c bent at a predetermined angle, the drive shaft 11 held by the holding device 62 is rotated counterclockwise in FIG. 4 by the motor 80, and the dustproof boot 15 together with the drive shaft 11 is rotated. When the clamp band 22 loosely fitted to is rotated,
The tongue piece 22c bent at a predetermined angle is pressed by the other thick pressing roller 211 at a position rotated by approximately 180 degrees, and the tongue piece 22c is bent and crimped until the lever 22b is held in close contact with the outer peripheral portion of the clamp band 22. be able to.

Further, as shown in FIG. 4, the other swing piece 20
The 7 is provided with a temporary caulking detection mechanism 247 that detects whether or not the tongue piece 22c of the clamp band 22 is bent to a predetermined angle by the pressing claws 229 and 230 of the temporary caulking mechanism 227.

That is, a detection lever 248 having an L-shaped shape is rotatably attached to the other swing piece 207 by a pivot 249, and a tension spring 249 stretched between the swing lever 207 and the swing lever 207 causes the detection lever 248 to move. Is biased and supported in the counterclockwise direction. The tip end of the detection lever 248 is formed thinner than the width of the tongue piece 22c before the clamp band 22 is bent, and the clamp band 2 loosely fitted in the dustproof boot 15.
2, the base end portion of the detection lever 248 is close to the detection sensor 250 attached to the swing piece 207.

Therefore, when the clamp band 22 rotates together with the drive shaft 11 in the counterclockwise direction in FIG. 4 and the tongue piece 22c thereof is rotated by about 180 degrees,
If the tongue piece 22c is bent at a predetermined angle, the bent tongue piece 22c abuts against the tip of the detection lever 248 and the detection lever 248 is rotated clockwise in FIG. Then, detect this
250 detects. However, if the tongue piece 22c of the clamp band 22 is not bent at a predetermined angle, the tongue piece 22c
Since c passes through without contacting the tip of the detection lever 248 and does not rotate the detection lever 248, the detection sensor 250 does not operate and the tongue piece 22c of the clamp band 22 is bent to a predetermined angle. It can detect the absence.

The operation of the clamp band tightening device 39 described above will now be described. First, FIGS.
As shown in 0, the drive shaft 11 transferred to the predetermined position by the first transfer device 33 is already equipped with the dustproof boots 14 and 15 and the clamp bands 21 and 22, and is transferred by the lifting device 61 at the predetermined position. It is raised from the line to the working height and is held in its height position by the holding device 62. That is, in the elevating device 61, the cylinders 64 and 65 are selectively operated according to the long and short drive shafts 11, and the support pieces 68 and 69 of the plates 66 and 67 are lifted to lift the drive shaft 11. Then, in the holding device 62, each cylinder 74, 7 with respect to the drive shaft 11 in the raised position.
5 is operated to move the movable tables 72, 73 on both sides in the direction of approaching each other. Then, each moving table 72,
The holding shafts 78 and 79 of 73 hold and center the axial end surface of the drive shaft 11. The holding shafts 78 and 79 are integrally rotatable with the drive shaft 11 held by the motor 80 in the circumferential direction. When the holding device 62 holds the drive shaft 11, the plate 6 of the lifting device 61 is moved.
6, 67 descend and retreat.

Next, with the holding device 62 holding the drive shaft 11, the band fixing devices 82, 83,
Dustproof boots 14,1 already installed by 84
The dustproof boots 14 and 15 are fastened to the small diameter portions 14 of the drive shaft 11 by tightening the clamp bands 21 and 22 of FIG.
It is fixed to a and 14b. In this case, drive shaft 1
The band fixing devices 82, 83, 84 to be used are different depending on whether the dustproof boots 14 and 15 attached to 1 are the resin boots 14 or the rubber boots 15.
Used selectively. In the present embodiment, the dustproof boot mounted on the right shaft end side of the drive shaft 11 is the resin dustproof boot 14, and the clamp band 21 is tightened by the band fixing device 82 to attach the dustproof boot 14 to the drive shaft 11. When fixing, the dustproof boot attached to the right shaft end side of the drive shaft 11 is the rubber dustproof boot 15, and the clamp band 22 is tightened by the band fixing device 83 to attach the dustproof boot 15 to the drive shaft 11. The case of fixing will be described.

As shown in FIG. 1, in the drive shaft 11 held at a predetermined height position, the dustproof boot mounted on the right shaft end side of the driveshaft 11 is a resin dustproof boot 14. The servomotor 99
To move the moving body 95 to the guide rails 92, 93, 94.
1 and moves the band fixing device 82 to the left of the dustproof boot 14 mounted on the drive shaft 11 in FIG. 1. Here, as shown in FIG. 3, the air cylinder 105 is operated to move the vertical moving plate 104 downward so that the drive shaft 1 is inserted into the guide notch 122 of the axial positioning plate 110.
Stop at the position where 1 enters.

Then, again, the servo motor 99 is driven to move the band fixing device 82 together with the moving body 95 to the dustproof boot 1.
Move in the direction of approaching 4 (right in Fig. 1). Then, as shown in FIGS. 5 to 7, the axial positioning plate 110 moves in the same direction (upward in FIG. 7) together with the band fixing device 82, and the projection 123 of the axial positioning plate 110 causes the dustproof boot. If the axial direction positioning plate 110 moves relative to the lower bracket 108 by abutting against the end surface of the small diameter portion 14a of the reference numeral 14, the detection sensors 120 and 121 shift their positional relationship with the corresponding dogs 118 and 119. The relative movement of both is detected by. The detection sensors 120 and 121 output the detection result to the servo motor 98 to stop the driving and stop the band fixing device 82, whereby the axial positioning of the band fixing device 82 with respect to the clamp band 21 is completed.

When the band fixing device 82 is axially positioned, the drive shaft 11 held by the holding device 62 is rotated by the motor 80 (see FIG. 18) in this state, and the dustproof boot 14 is moved together with the drive shaft 11. When rotated, the clamp band 21 loosely fitted in the small diameter portion 14a of the dustproof boot 14 also rotates. Photoelectric sensor 125, 126
Detects the protrusion 21d that has moved upward as the clamp band 21 rotates. The photoelectric sensors 125 and 126 output the detection result to the motor 80 to stop the drive thereof, and stop the movement of the drive shaft 11 (clamp band 21), so that the clamp band 21 with respect to the band fixing device 82 in the circumferential direction. The temporary positioning of is completed.

Then, when the clamp band 21 is provisionally positioned in the circumferential direction, the main positioning in the circumferential direction of the clamp band 21 and the clamping deformation are continuously performed. That is, as shown in FIGS. 3 and 7, high-pressure air is supplied to the chamber below the piston of the air cylinder 133, so that the load cell 145, the hydraulic cylinder 146, the pair of claws 150, etc. are in the raised position (see FIG. 3). Position), the hydraulic cylinder 146 is not driven, and the pair of pressing claws 150 are open. When the air in the air cylinder 133 is switched to the low pressure air, the load cell 145 and the hydraulic cylinder 146 are moved together. The pair of pressing claws 150 slowly descend due to its own weight. Then, when the claw portions 152 of each of the opened pressing claws 150 come into contact with the outer peripheral surfaces on both sides of the protruding portion 21d of the clamp band 21, the detection sensor
138 and 139 detect dogs 135 and 136, and again, air cylinder
The inside of 133 is switched to high-pressure air and the descending is stopped.
The claw portion 152 is held at a position where it comes into contact with the outer peripheral surface of the clamp band 21.

In this state, the hydraulic cylinder 146 is driven to move the pawl operating piece 149 via the drive rod 147 and the drive block 148.
When the claw band 2 is moved downward, the pair of pressing claws 150 rotate against each other against the compression spring 153 so that the claws 152 approach each other and the clamp band 2 moves.
The protrusion 21d of No. 1 can be pressed. At this time,
By slowly closing the pair of pressing claws 150 from the open state, the clamp band 21 is slightly rotated in the circumferential direction, and the protruding portion 21d is centered at a position directly facing the pressing claws 150, that is, at the center. Will be positioned by
The main positioning of the protrusion 21d of the clamp band 21 in the circumferential direction is accurately performed. Then, by further driving the hydraulic cylinder 146 to lower the pawl operating piece 149, the pair of pressing pawls 150 is pressed.
As the claws 152 are closed, the claws 152 of the pair of claw claws 150 deform the protrusions 21d of the clamp band 21 by a pressure to reduce the inner diameter of the clamp band 21 and the clamp band 21 to the dustproof boot 14 It is fixed to the small diameter portion 14a.

At this time, the load cell 145 has a pair of pressing claws 1.
The reaction force acting on 50 is detected, and when the predetermined detection load is detected, the driving of the hydraulic cylinder 146 is stopped to recognize the completion of the work, and the pair of concavity claws 150 are opened by the reverse driving. Therefore, a great load is not applied to the pressing claw 150, and a smooth operation can be performed.

Further, the protruding portion 21d of the clamp band 21
When the claw portion of the pair of claws 150 is abutted against the outer peripheral surface of the clamp band 21 when the claw is deformed,
When the closing drive of 150 is performed, the pressing claw 150 presses the protruding portion 21d of the clamp band 21 while centering it. However, since the other chamber of the air cylinder 133 is open to the atmosphere, the pair of pressing claws 150, etc. Regardless of the pressure applied to the air cylinder 133, it can be retracted and moved upwards.
The 150 does not move upward along the outer peripheral surface of the clamp band 21 and an unreasonable load does not act on the pressing claw 150 and the clamp band 21.

Further, when the pair of pressing claws 150 fully position the protruding portion 21d of the clamp band 21, the clamp band 21 is loosely fitted in the small diameter portion 14a of the dustproof boot 14, but the frictional resistance between the two is increased. By its protrusion 2
There is a case where 1d is not surely centered at the central position. However, the portion where the pair of pressing claws 150 and the like are attached can be horizontally swung by the horizontal shaft 140 in accordance with the position of the protruding portion 21d of the clamp band 21.
By moving the pair of clamping claws 150 according to the positions of the projecting portions 21d, the projecting portions 21d of the clamp band 21 can be reliably pressed by the pair of clamping claws 150.

In this way, the protrusion 21d of the clamp band 21 can be continuously positioned and deformed and fixed. Then, after the fixing work of the clamp band 21 is completed, the band fixing device 82 is retracted upward, and the lifting device 61 is moved.
Is operated to support the drive shaft 11, and then the holding of the drive shaft 11 by the holding device 62 is released, and the drive shaft 11 is transferred to the next work process by the first transport device 33.

Further, as shown in FIG. 1, in the drive shaft 11 held at a predetermined height position, the dustproof boot mounted on the right shaft end side of the driveshaft 11 is the rubber dustproof boot 15. If the moving body 96 is driven, the moving body 96 is moved to the guide rails 92, 9
1, the band fixing device 83, which moves along 3, 94, than the dustproof boot 15 mounted on the drive shaft 11.
To the left of. Here, as shown in FIG. 4, the air cylinder 165 is operated to move the vertical moving plate 164 downward, and stop at a position where the drive shaft 11 enters the guide notch 181 of the axial positioning plate 170.

Then, the servo motor 101 is driven again to move the movable body 96 together with the band fixing device 83 to the dustproof boot 1.
Move in the direction of approaching 5 (right in Fig. 1). Then, as shown in FIGS. 10 and 11, the axial positioning plate 170 is moved in the same direction as the band fixing device 83 (see FIG. 11).
In the axial direction), and the axial positioning plate 170
End surface of the dustproof boot 15 comes into contact with the end surface of the small diameter portion 15a of the dustproof boot 15 and stops, that is, when the axial positioning plate 170 moves relative to the side bracket 168, the detection sensors 179 and 180 are positioned at the corresponding dogs 178. The relative movement of the two is detected by the deviation of the relationship. The detection sensors 179 and 180 output the detection result to the servo motor 98 to stop the driving thereof and stop the band fixing device 83, so that the clamp band 2
The axial positioning of the band fixing device 83 with respect to 2 is completed.

When the band fixing device 83 is axially positioned, as shown in FIGS. 4 and 12, the drive shaft 11 held by the holding device 62 is moved to the motor 8 as shown in FIGS.
0 (see FIG. 18) rotates clockwise in FIG. 12, and when the dustproof boot 15 is rotated together with the drive shaft 11, the clamp band 22 loosely fitted in the small diameter portion 15a of the dustproof boot 15 also rotates. On the other hand, by driving the hydraulic cylinder 184 to move the drive rod 185 downward, the circumferential positioning piece 189 is held in advance at a predetermined lowered position. Then, the fixed piece 22c of the clamp band 22 that rotates together with the dustproof boot 15 contacts the tip of the circumferential positioning piece 189, and activates the circumferential positioning piece 189. The detection sensor 192 detects the operation of the circumferential positioning piece 189, and the detection sensor 192 outputs the detection result to the motor 80.
To drive shaft 11
By stopping the rotational movement of (clamp band 22),
The circumferential positioning of the clamp band 22 with respect to the band fixing device 83 is completed.

Then, in this state, as shown in FIG. 4, when the hydraulic cylinder 200 is operated to extend the drive rod 201,
The bending lever 199 rotates in the clockwise direction in FIG. 4 about the pivot 198, and the bending roller 202 pushes the lever 22b of the clamp band 22 and bends the lever 22b until it contacts the clamp band 22. Then, when the hydraulic cylinder 218 is operated to extend the drive rod 219, the pivot 208 and the swing piece 206 are moved in the counterclockwise direction in FIG. 4, the pair of pressing rollers 210 and 211 approach each other to clamp the clamp band 22 and the lever 22b bent by the bending lever 199 is moved to one of the thin pressing rollers. 210 holds.

When the pair of pressing rollers 210 and 211 hold the clamp band 22 and the bent lever 22b in this state, the hydraulic cylinder 200 causes the bending lever 199 to rotate counterclockwise in FIG. The hydraulic cylinder 184 returns the circumferential positioning piece 189 to the raised position while rotating in the direction to return to the original position.

Here, as shown in FIG. 15, when the hydraulic cylinder 240 is operated to extend the drive rod 241, the operating piece 242 moves forward (to the right in FIG. 15) via the operating lever 238, and each roller A pair of compression levers 23 via 236 and 237
Rotate 4 and 235 respectively to close the claws 229 and 230, and
6, the tongue piece 22c of the positioned clamp band 22 is bent between the lever 22 and
With the b positioned, the tongue piece 22c is bent at a predetermined angle by pressing down. Therefore, this clamp band 2 is bent.
Lever 22b along 2 is a similarly bent tongue 2
It does not return to its original position by 2c, but is held in its bent position. At this time, the pressing roller 210 is positioned between the tongue pieces 22c and presses the lever 22b. However, since the pressing roller 210 is sufficiently thin, the pressing claws 229 and 230 are attached to the pressing roller 210. There is no contact.

When the tongue piece 22c is temporarily bent and the lever 22b is held along the clamp band 22, the drive shaft 11 is rotated by the motor 80 in the counterclockwise direction in FIG. The band 22 also rotates in the same direction. Then, the tongue piece 22c of the clamp band 22 bent at a predetermined angle is pressed by the thick presser roller 211 at the position rotated by approximately 180 degrees, and the presser roller 211 moves the tongue piece 22c to the lever 22.
Bend and crimp until b is tightly held on the outer peripheral portion of the clamp band 22.

At this time, the tongue piece 22 of the clamp band 22
If the tongue piece 22c is bent by a predetermined angle at a position where c is rotated by approximately 180 degrees, the bent tongue piece 22c abuts against the tip end portion of the detection lever 248 to move the detection lever 248 in FIG. The detection sensor 250 detects this by rotating in the clockwise direction. However, unless the tongue piece 22c of the clamp band 22 is bent at a predetermined angle, the tongue piece 22c passes without contacting the tip of the detection lever 248 and does not rotate the detection lever 248. 250 does not work and clamp band 2
By detecting that the second tongue piece 22c is not bent to a predetermined angle, it is possible to quickly detect the occurrence of damage or failure of the pair of pressing claws 229 and 230, and to determine whether the clamp band 22 is caulked.

In this way, the positioning of the clamp band 22, the bending of the lever 21b and the pressing deformation of the tongue 22c can be continuously performed. Then, after the fixing work of the clamp band 22 is completed, the band fixing device 83 is retracted upward and the elevating device 61 is operated to drive the drive shaft 11
After supporting the drive shaft 1 by the holding device 62
1 is released, and the drive shaft 11 is transferred to the next work process by the first transfer device 33.

As described above, in this embodiment, the clamp band tightening device 39 has the band fixing device 82 for the resin boot and the band fixing devices 83 and 84 for the rubber boot, and the drive shaft 11 is provided with the band fixing device 82. It is designed to be used selectively according to the type of dustproof boots installed. Then, in each band fixing device 82, 83, 84, the dustproof boots 14, 15 mounted on the drive shaft 11
Even if there is some variation in the positions of the clamp bands 21 and 22, the positioning in the axial direction and the circumferential direction allows
The clamp bands 21 and 22 can be accurately positioned, and the clamp bands 21 and 22 can be correctly fixed.

In the above-described embodiment, the clamp band tightening device of the present invention is used as the dustproof boot 1 for the constant velocity joints 12 and 13 mounted on the drive shaft 11.
The case of applying to the device for fixing 4, 15 and tightening the small diameter clamp bands 21, 22 for fixing and fixing the small diameter portions 14a, 15a of the dustproof boots 14, 15 mounted on the drive shaft 11 has been described. The present invention is not limited to these, and can be applied to tightening the small diameter clamp bands 23 and 24 for fixing the large diameter portions 14b and 15b of the dustproof boots 14 and 15, and the dustproof boots. The present invention is not limited to 14, 15 and can be applied to those that fix other covers, hoses and the like.

[0091]

As described above in detail with reference to the embodiments, according to the clamp band tightening device of the present invention, the tightening device main body is moved by the moving means while the mounting shaft is held by the holding means. Along with axial movement of the clamp band that is loosely fitted to the mounting shaft portion by the axial positioning means, the mounting shaft portion is rotated in the circumferential direction by the rotating means, and the circumferential positioning means is provided. The protrusion of the clamp band is positioned with respect to the tightening device main body by means of the clamp device, and the protrusion of the clamp band positioned at a predetermined position is clamped and deformed by the clamping means to reduce the inner diameter of the clamp band and reduce this clamp. Since the band is fixed to the mounting shaft, even if there is some variation in the mounting position of the clamp band loosely fitted to the mounting shaft, A detecting section and 挾圧 unit can be accurately positioned, it is possible to fix the clamping band correctly. As a result, workability can be improved and work reliability can be improved.

According to the clamp band tightening device of the present invention, the axial positioning means is movably supported in the same direction as the moving direction of the tightening device body and is loosely fitted to the mounting shaft portion. And an axial positioning member that is moved in contact with the end surface of the clamp band, a detection sensor that detects the position of the axial positioning member, and a stop unit that stops the movement of the tightening device body based on the output of the detection sensor. Since it has, the axial positioning of the tightening device main body with respect to the clamp band can be accurately performed with a simple configuration.

Further, according to the clamp band tightening device of the present invention, the temporary positioning means for positioning the protruding portion of the clamp band at a position substantially facing the clamping means and the temporarily positioned clamp are provided by the circumferential positioning means. The temporary positioning means serves as a detection sensor for detecting the protruding portion of the clamp band, and the temporary positioning means serves as the detection sensor for detecting the protruding portion of the clamp band. Since the pair of compression claws of the compression means that reduces the diameter of the clamp band by deforming the clamp band is opened and closed, the circumferential position of the protruding portion of the clamp band with respect to the compression means can be accurately positioned, and By using a pair of claws that can be opened and closed as the main positioning, the positioning can be performed easily with the existing configuration without the need for a separate main positioning. It is possible to carry out the order.

Further, according to the clamp band tightening device of the present invention, the clamping means is provided on the main body supported up and down with respect to the protruding portion of the clamp band so as to move toward and away from the main body and the lower end portion of the main body. Supplying fluid to one chamber of the fluid cylinder for moving the main body and the fluid cylinder for moving the main body up and down, and a pair of openable and closable compression pawls for pressing the protruding portion of the clamp band Since the fluid supply means and the pressure fluid variable means for varying the pressure of the fluid supplied to one chamber of the fluid cylinder by the fluid supply means are provided, the positioning and deformation of the protruding portion of the clamp band is performed by the pair of pressing claws. The fixation can be performed continuously.

Further, according to the clamp band tightening device of the present invention, the other chamber of the fluid cylinder is opened to the outside so that the main body can be moved upward regardless of the operating state of the fluid supply means and the fluid cylinder. Therefore, when the pair of pressing claws are pressed while centering the protrusion of the clamp band, the pressing claws will be retracted upward along the outer peripheral surface of the clamp band, and an unreasonable load will not be applied to both. , Can operate smoothly.

Further, according to the clamp band tightening device of the present invention, the portion of the main body on which the pair of pressing claws is mounted can be horizontally swung, so that the pair of pressing claws serves as the clamp band. Even if the protrusion of the clamp band is not reliably centered when positioning the protrusion, the part of the main body where the pair of compression claws are mounted horizontally swings to match the position of the protrusion of the clamp band. By doing so, the pair of pressing claws moves according to the position, and the protrusion of the clamp band can be reliably pressed by the pair of pressing claws.

Further, according to the clamp band tightening device of the present invention, the load cell for detecting the reaction force acting on the pair of pressing claws is provided, and the driving means stops the driving based on the detected load of the load cell. In addition, the load cell detects the reaction force acting on the pair of pressing claws when the pair of pressing claws deforms the protruding portion of the clamp band by the force of the pair of pressing claws. Since the drive means is stopped when it is confirmed that the deformation of the clamp band by the protruding portion is completed, a large load is not applied to the pressing claw and a smooth operation can be performed.

[Brief description of drawings]

FIG. 1 is a front view of an entire band fixing device in a clamp band tightening device according to an embodiment of the present invention.

FIG. 2 is a plan view of the entire band fixing device.

FIG. 3 is a side view of the band fixing device for resin boots of the present embodiment.

FIG. 4 is a side view of a band fixing device for rubber boots.

FIG. 5 is a detailed view of a main part of a band fixing device for a resin boot.

6 is a cross-sectional view taken along the line VI-VI of FIG.

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

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

9 is a sectional view taken along line IX-IX in FIG.

10 is a cross-sectional view taken along line XX of FIG.

11 is a sectional view taken along line XI-XI of FIG.

12 is a sectional view taken along line XII-XII of FIG.

13 is a sectional view taken along line XIII-XIII in FIG.

14 is a sectional view taken along line XIV-XIV in FIG.

15 is a sectional view taken along line XV-XV in FIG.

16 is an enlarged view of an XVI portion of FIG.

FIG. 17 is a plan view showing an assembly line of a drive shaft including a clamp band tightening device of the present embodiment.

FIG. 18 is a front view of the clamp band tightening device.

FIG. 19 is a plan view of a clamp band tightening device.

FIG. 20 is a side view of the clamp band tightening device.

FIG. 21 is a partially cutaway perspective view showing a front axle of a vehicle.

FIG. 22 is a sectional view of a drive shaft to which a constant velocity joint and a dustproof boot are fixed.

FIG. 23 is a perspective view showing a tightened state of a resin dustproof boot mounted on the drive shaft.

FIG. 24 is a perspective view showing a tightened state of the rubber dustproof boot mounted on the drive shaft.

FIG. 25 is a schematic view showing a conventional clamp band tightening method.

[Explanation of symbols]

 11 Drive shaft 12,13 Constant velocity joint 14,15 Dustproof boot 14a, 15a Small diameter part 21,22 Clamp band 39 Clamp band tightening device 61 Elevating device 62 Holding device 80 Motor (rotating means) 82 Resin band fixing Device 83, 84 Rubber boot band fixing device 98, 100 Servo motor (moving means) 109 Axial positioning mechanism 110 Axial positioning plate 120, 121 Detection sensor 124 Circumferential positioning mechanism 125, 126 Photoelectric sensor 127 Claw mechanism 133 Air cylinder 145 Load cell 146 Hydraulic cylinder 150 Clamping claw 169 Axial positioning mechanism 170 Axial positioning plate 179, 180 Detection sensor 182 Circumferential positioning mechanism 189 Circumferential positioning piece 197 Lever bending mechanism 206, 207 Oscillating piece 210 Thin pressing roller 211 Thick presser roller 212 Band presser mechanism 213 Caulking mechanism 227 Temporary caulking mechanism 2 28 caulking mechanism 229, 230 Clamping claw 247 Temporary caulking detection mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuichi Hasaki Yuichi Hasaki, No. 1 Nakashiniri, Hashime-cho, Okazaki City, Aichi Prefecture Mitsubishi Motors Engineering Co., Ltd. Okazaki Plant

Claims (7)

[Claims] 1. An inner diameter of the clamp band is reduced and fixed to the mounting shaft portion by compressing and deforming a protruding portion of the annular clamp band that is loosely fitted to the mounting shaft portion and curved outward. In the clamp band tightening device, a holding means for holding the mounting shaft portion, a rotating means for rotating the mounting shaft portion held by the holding means in a circumferential direction, and an axial direction of the mounting shaft portion. A fastening device body movably supported along the fastening device body, a moving means for moving the fastening device body in the axial direction, and the mounting device for moving the fastening device body in the axial direction by the moving means. Axial positioning means for axially positioning with respect to the clamp band, and the mounting shaft portion is circumferentially rotated by the rotating means to position the protruding portion of the clamp band with respect to the tightening device body. A circumferential positioning means, and a clamping means for reducing the diameter of the clamp band by compressing and deforming the protruding portion of the clamp band positioned at a predetermined position by the axial positioning means and the circumferential positioning means. A clamp band tightening device characterized by being equipped. 2. The clamp band tightening device according to claim 1, wherein the axial positioning means is movably supported by the tightening device body along the same direction as the moving direction of the tightening device body. An axial positioning member that is moved by contacting the end surface of the clamp band loosely fitted to the mounting shaft portion, a detection sensor that detects the position of the axial positioning member, and the tightening based on the output of the detection sensor. A clamping device for a clamp band, comprising: stop means for stopping the movement of the device body. 3. The clamp band tightening device according to claim 1, wherein the circumferential positioning means is a temporary positioning means for positioning the protruding portion of the clamp band at a position substantially opposite to the clamping pressure means, and the temporary positioning means. And a temporary positioning means for positioning the protruding portion of the clamp band at a position directly facing the pressing means, and the temporary positioning means is a detection sensor for detecting the protruding portion of the clamp band.
The main positioning means is a pair of clamping claws which can be opened and closed by the clamping means for compressing and deforming the protruding portion of the clamp band to reduce the diameter of the clamp band. . 4. The clamp band tightening device according to claim 1, wherein the pressing means is a main body that is vertically movable with respect to the protrusion of the clamp band and is supported so as to be able to approach and separate from each other, and a lower end portion of the main body. A pair of opening and closing claws for pressing the protruding portion of the clamp band, driving means for driving the pair of claws to open and close, a fluid cylinder for moving the main body up and down, and an upper part of the main body. Fluid supply means for supplying a fluid to one chamber of the fluid cylinder to move the fluid cylinder, and pressure fluid variable means for varying the pressure of the fluid supplied to the one chamber of the fluid cylinder by the fluid supply means. A clamp band tightening device characterized by being equipped. 5. The clamp band tightening device according to claim 4, wherein the other chamber of the fluid cylinder is open to the outside, and the main body moves upward regardless of the operating states of the fluid supply means and the fluid cylinder. A clamp band tightening device characterized by being free. 6. The clamp band tightening device according to claim 4, wherein a portion of the main body to which the pair of pressing claws are attached is horizontally swingable. . 7. The clamp band tightening device according to claim 4, wherein the main body is provided with a load cell for detecting a reaction force acting on the pair of pressing claws, and the driving means is adapted to detect a load of the load cell. The clamp band tightening device is characterized in that the drive is stopped and the rotation is reversed based on the above.