JPH0639023B2 - How to insert circlip to work - Google Patents

Description

Detailed Description of the Invention A. OBJECT OF THE INVENTION (1) Industrial field of application The present invention relates to a work for inserting a circlip into a work including an axis portion provided with an annular groove to which the circlip should be fitted on the outer periphery near the free end. Circlip fitting method.

(2) Conventional Technology Conventionally, for inserting a circlip into a work, for example, Japanese Patent Publication No. 36-16652 and Japanese Utility Model Publication No. 51.
The one disclosed in Japanese Patent Publication No. 33003 is known.

(3) Problems to be Solved by the Invention By the way, in the above-mentioned conventional one, the circlip is fitted into the shaft portion of the work while expanding the circlip by the expanding body at the fixed position, and a plurality of types can be used on the same line. When trying to fit the circlip into the work, it was necessary to stop the machine and replace the expanding body each time, so the replacement of the expanding body was complicated.

The present invention has been made in view of the above circumstances, and it is possible to efficiently and accurately replace the expansion body even when a plurality of types of works are mixed and conveyed on the same conveyance line. , A method of fitting a circlip into a work is provided.

B. Configuration of the Invention (1) Means for Solving the Problems To achieve the above object, the present invention provides a plurality of types of shaft portions provided with an annular groove to which a circlip is to be fitted on the outer periphery near the free end. In the method of fitting a circlip into a work, in which the work is sequentially transported along a predetermined transport line, and the circlip is fitted into the annular groove of the work during the transportation, the circlip is attached to the free end of the shaft portion of the work. A plurality of expanders having a taper guide portion for guiding the fitting while expanding the clip are prepared corresponding to each type of the work, and the expanders are provided near the transfer line. And a step of waiting in each of the plurality of waiting areas of the expanding body waiting section according to the type of the expanding body, and identifying the type of workpieces sequentially conveyed, and expanding the expanding body corresponding to the identification result. Select from body waiting section And the step of fitting the free end of the shaft of the work, the step of supplying the fitted circlip to the expanded body, and the supplied circlip along the taper guide portion of the expanded body. A step of pressing and expanding and fitting into the annular groove of the work, and a step of removing the expanding body from the shaft free end after fitting the circlip and returning it to the original standby area of the expanding body standby portion. It is characterized by including and.

(2) Operation According to the above method, when inserting the circlip, prepare multiple types of expansion bodies corresponding to multiple types of workpieces that are transported on the transport line, and transport those expansion bodies. When selecting an expanding body by identifying the type of work being conveyed on the transfer line, since it is made to stand by in each of the plural waiting areas of the expanding body waiting section near the line for each type of the expanding body. The selection work can be performed extremely efficiently and accurately, and after it is selected, it can be immediately fitted to the free end of the shaft of the work, so multiple types of work are randomly mixed and transferred on the same transfer line. Even in such a case, it is possible to set an appropriate expanding body according to the type of the work on the work shaft extremely quickly and accurately.

After fitting the circlip, the expansion body is removed from the free end of the shaft and returned to the original waiting area of the expansion body standby section near the transport line. Work can be performed efficiently.

(3) Embodiment Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1 showing a plane of a circlip fitting device for carrying out the method of the present invention and FIG. 2 showing the same front. The fitting device 1 is for transferring the works W (see FIG. 3) having different diameters of the shaft portion 8 along the predetermined first and second transfer lines L ₁ and L ₂ which are parallel to each other. First and second conveying means 2 ₁ and 2 ₂ and first and second conveying means 2 ₁ and 2 ₂ corresponding to the respective circlip 10 and spring receiving member 11 (see FIG. 3) The first and second component feeding means 3 ₁ and 3 ₂ and the circlip 10 and the spring receiving member 11 fed by the first and second component feeding means 3 ₁ and 3 ₂ are transferred to the first and second conveying means 2 _1. , supplied to the workpiece W on the _{2 2,} set subjecting single A selection supply means 5, respectively corresponding to press the circlip 10 being supplied to the workpiece W the first and second mating Komu fitted to the shaft portion 8 in the first and second transport means 2 _1, 2 ₂ Incorporating means 6 ₁ and 6 ₂ and first and second conveying means 2 ₁ and 2
First and second expanding body returning means 4 corresponding to ₂ respectively
₁ and 4 ₂ and first and second expanding body returning means 4 ₁ and 4 ₂
First and second sorting means 7 ₁ , 7 ₂ individually attached to the
With.

In FIG. 3, the work W in this embodiment is formed in a bowl shape so as to form a casing of a multi-plate clutch, for example, and a cylindrical shaft portion 8 extending to the open end side is coaxial with the central portion thereof. And integrally provided. An annular groove 9 is provided on the outer periphery of the portion of the shaft portion 8 near the free end, and a circlip 10 fitted into the annular groove 9 and an annular spring receiving member supported by the circlip 10. 11 and 11 are fitted to the shaft portion 8 by the circlip fitting device 1. The spring receiving member 11 is for receiving a coil-shaped spring 12 which is arranged so as to surround the shaft portion 8. The work W is fitted into the device 1 with the spring 12 being externally attached to the shaft portion 8.
Be delivered to. That is, the piston 13 is slidably fitted and the spring 12 surrounding the shaft portion 8 is attached to the piston 1.
The work W is loaded onto the fitting device 1 with the open end side thereof facing upward.

By the way, in the circlip fitting device 1, a total of four kinds of works W are carried in, for example, the outer diameter of the shaft 8 is large and small, and the height of the shaft 8 is high and low. , and the in this embodiment, for example, by two types of the workpiece W is first conveying unit 2 ₁ having a larger outer diameter of the shaft portion 8, also two workpiece W smaller outer diameter of the shaft portion 8 and the second transporting means Two _two
Is transported by.

The first and second transfer means 2 ₁ and 2 ₂ are arranged in parallel with each other on a fixed base 14, and these transfer means 2 ₁ and 2 ₂ are as shown in FIG. Further, for example, a pair of left and right mounting plates 15 and 16 that can travel in parallel to each other are provided, and the work W is carried on the mounting plates 15 and 16 and conveyed.

In addition, in the middle of the first and second transfer means 2 ₁ and 2 ₂ ,
As shown in FIG. 1, the identification stations SI ₁ , SI ₂
The supply stations SM ₁ and SM ₂ and the fitting stations SF ₁ and SF ₂ are arranged at intervals from the upstream side along the transport direction 17, respectively. The identification stations SI ₁ and SI ₂ are stations for identifying the shape of the shaft portion 8 in the work W, and the supply stations SM ₁ and SM ₂ are attached to the work W via the expansion member 18 and the spring receiving member 11 and the server. Stations for supplying the clip 10 and fitting stations SF ₁ , SF ₂
Then, the circlip 10 is fitted into the shaft portion 8 via the expansion body 18. Further, the first and second transfer means 2 ₁ and 2 ₂ are
Identification stations SI ₁ , SI ₂ , supply station S
M ₁ , SM ₂ and fitting stations SF ₁ , SF ₂
Then, the work W can be temporarily stopped, and in the stopped state, the work W is positioned and fixed as described later.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.
In the figure, the supply station SM of the first transport means 2 _1
1 , a component supply positioning fixing means MF including a positioning member 20 and a lifting cylinder 23 (see FIG. 2) is arranged. On the base 14 is a frame 19 erected gate-shaped straddling the first transport means 2 _1, on the frame 19, the positioning member 20 is fixed so as to position and fix the workpiece W. This positioning member 20 is a frame 19
And a receiving portion 22 that is basically cylindrical and that extends downward from the inner peripheral edge of the collar portion 21.
The tip or lower end of the receiving portion 22 is fixed to the frame 19 so as to project downward from the upper end of the frame 19. On the other hand, as shown in FIG. 2, an elevating cylinder 23 is arranged in the base 14 corresponding to the positioning member 20, and the piston rod 2 in this elevating cylinder 23 is arranged.
The fourth tip, the push-up portion for the lower center contact from below push up the work W stops at the position of the supply station SM ₁ In the first on the conveying means 2 ₁ 25 is provided. Therefore, when the work W transported by the first transport means 2 ₁ stops at a predetermined position of the supply station SM ₁ , the elevating cylinder 23 is extended so that
Workpiece W is pushed up tip 25 is pushed up from the first conveying means 2 ₁ on being fitted positioned in the shaft portion 8 in the workpiece W, the receiving portion 22 of the positioning member 20
The work W is positioned and fixed in a state where the tip of the work abuts on the piston 13.

By the way, the expanding body 18 fitted to the shaft portion 8 of the work W in the supply station SM ₁ is formed as shown in FIG. That is, the expanding body 18 has a small-diameter fitting portion 26 that can be fitted to the free end portion of the shaft portion 8 of the work W and a step portion 27 that can abut the free end end surface of the shaft portion 8.
A large-diameter guide portion 28 formed to have the same outer diameter as the shaft portion, and a large-diameter end connected to the large-diameter guide portion 28 and the small-diameter end having a smaller diameter than the inner diameter of the circlip 10. A certain taper guide portion 29 and a small-diameter cylindrical portion 30 that is connected to the small-diameter end of the taper guide portion 29 via a step are coaxially connected in order.

The expanding body 18 is prepared according to the type of the work W, and since there are four types of the work W, four types are prepared.

In FIGS. 6, 7, and 8, in the identification station SI ₁ set upstream of the supply station SM ₁ along the transport direction 17, the frame 19 to which the positioning member 20 is fixed is Identification means 31 for detecting the type of the work W, that is, the height of the shaft portion 8 is attached. The identification means 31 is provided with a pair of slide bars 33 and 34 movably supported by a support frame 32 connected to the frame 19 and a lower surface of a connecting bar 35 connecting the upper ends of the slide bars 33 and 34 to the piston rod. A cylinder 36 supported and fixed to the support frame 32 having an axis extending vertically while abutting 36a, and a receiving collar 37 engaged with the middle portion of one slide bar 33 at the lower position by the support frame 32. And a spring 38 that is contracted between the support frames 32 and biases the slide bar 33 downward, a support member 39 that is fixed to the lower end of the slide bar 33, and a support member 39 that is vertically movable. A pair of touch bars 40,
40, springs 41, 41 compressed between the touch bars 40, 40 and the support member 39 to urge the touch bars 40, 40 downward, and an intermediate portion between the receiving collar 37 and the support member 39. And a pair of detection switches 42, 42 that are supported and fixed to the slide bar 33 and that detect the upper ends of the touch bars 40, 40 protruding upward from the support member 39.

In the identification unit 31, the slide bar 33 or support member 39 by extending action of the cylinder 36 in the normal is in the upper position, the workpiece W which has been conveyed by the first conveying unit 2 ₁ is stopped immediately below the identifying means 31 At times, the cylinder 36 is retracted. As a result, the slide bar 33 and the support member 39 are lowered by the spring force of the spring 38, and the lower ends of the touch bars 40, 40 come into contact with the upper end of the shaft portion 8 of the work W. At this time, the touch bars 40, 4
Since 0 is biased downward by springs 41, 41 compressed between the support member 39 and the support member 39, the upper end positions of the touch bars 40, 40 are raised or lowered depending on the height of the shaft portion 8 of the work W. Change. Therefore, by detecting the upper end positions of the touch bars 40, 40 with the detection switches 42, 42, it is detected whether the work W has a high shaft portion 8 or a low work shaft W. can do.

The discrimination result by the discriminating means 31 indicates that the expanding body 18 of either high or low is fed to the shaft portion 8 of the work W at the supply station SM _1.
Used to determine what to supply to
Used as selection criteria of the expanding member 18 in the sorting unit _71.

In Figure 9, the station SF ₁ the fitting of the first conveying means _{2 1,} the positioning member 44 and the lifting cylinder 5
Positioning and fixing means FF for fitting including 0 (see FIG. 2)
Is provided. Fitting station SF ₁ in the first conveying unit 2 ₁ frame 43 of the gantry across the is erected on the base 14, the positioning member 44 for positioning the workpiece W on the frame 43 is fixed. This positioning member 44 corresponds to the positioning member 2 of the supply station SM _1.
Similar to 0, a collar portion 45 fixed to the frame 43,
Although it has a basically cylindrical receiving portion 46 extending downward from the inner peripheral edge of the flange portion 45, the inner peripheral surface of the receiving portion 46 is to be engaged with the spring receiving member 11. An engagement step portion 47 facing downward is provided. Moreover, the engagement step portion 47 is
When the lower end of the receiving portion 46 contacts the piston 13 of the work W, the circlip 10 when fitted in the annular groove 9
The spring receiving member 11 is arranged so as to be pressed toward the closed end side of the work W with respect to the position where the spring receiving member 11 should be pressed down. In addition, the base 1 immediately below the positioning member 44
A push-up portion 48 for contacting and positioning the work W with the positioning member 44 is provided in the piston rod 49.
An elevating cylinder 50 provided at the upper end of is equipped with an axis line extending vertically.

As described above, the frame 1 in relation to the first conveyor means 2 ₁
9, positioning member 20, lifting cylinder 23, identification means 3
1, the positioning member 44 and the lifting cylinder 50 and the like are disposed, their configuration associated with the second conveying means 2 ₂ also since the first is conveying means 2 ₁ basically the same, the first conveying means 2 _The same reference numerals are given to the portions corresponding to ₁ , and only the drawings are shown, and the detailed description is omitted.

10 showing a first component supply means 3 ₁ details, in Fig. 11 and Fig. 12, a first component supply means 3 _1, the axis portion 8 outside of the workpiece W to be conveyed by the first conveying means 2 ₁ The spring receiving member 11 and the circlip 10 corresponding to the diameter are arranged at a lateral position of the base 14 so as to be supplied in a state in which they are arranged vertically with the circlip 10 in the upper position.

The first component supply means 3 _1, the push-up rod 57 which is inserted freely move up and down the guide member 56 which is secured to the frame 55 provided upright on the floor, the spring receiving member 11 and the circlip 10 Holding member 58 fixed to the upper end of the push-up rod 57 to hold the same, and a piston rod 59a having a vertically extending axis line that is fixed and supported by the guide member 56 and has a lower end of the push-up rod 57. And a push-up cylinder 59 connected to the.

The holding member 58 includes a large diameter portion 60 below and a small diameter portion 6 above.
1 is coaxially connected via a stepped portion 62, and a large diameter portion 60 is coaxially fixed to the upper end of the push-up rod 57. Moreover, the outer diameter of the small-diameter portion 61 is set to be slightly smaller than the inner diameter of the spring receiving member 11, and the small-diameter portion 61 supports the spring receiving member 11 at the stepped portion 62 so that the inside of the spring receiving member 11 is supported. Can be inserted into. Also, the small diameter portion 61
A taper portion 63 having a smaller diameter toward the upper side is provided at the upper end of the taper portion. The taper portion 63 is inserted into the circlip 10 in a natural state where no external force is applied, as shown in FIG. Is formed to support the circlip 10 at an intermediate portion.

On the upper surface of the frame body 55, a pair of fixed chutes 64, 64 parallel to each other and a stopper 65 provided at a terminal end portion of the fixed chutes 64, 64 are fixed, and the fixed chutes 64, 64 are fixed. The distance between the side edges facing each other is set so as to be movable by guiding the spring receiving member 11, and guide step portions 66, 66 are provided on the lower portion thereof to guide the spring by receiving the outer edge portion of the spring receiving member 11. Each is provided. Moreover, the stopper 65 is arranged so that the axis line of the holding member 58 and the axis line of the spring receiving member 11 coincide with each other when the spring receiving member 11 that has moved in the fixed chutes 64, 64 is positioned by abutting against the stopper 65. Is installed in.

Holding plates 67, 67 are fixed to the fixed chutes 64, 64, and these holding plates 67, 67 are stoppers 65.
The spring receiving member 11 in contact with the fixed chute 6
It is attached excluding the chute end so that it can be lifted from 4,64.

A chute 68 for sequentially supplying the spring receiving member 11 to the fixed chutes 64, 64 is arranged on an extension line of the fixed chutes 64, 64 so as to be continuous with the fixed chutes 64, 64. 69 is connected. Therefore, the spring receiving member 11 continuously supplied from the parts feeder 69 is sequentially supplied to the fixed chutes 64, 64 via the chute 68.

On the lateral side of the frame body 55 in a direction forming an angle of 90 degrees with the extending direction of the chute 68 about the axis of the holding member 58,
The gantry 70 is fixedly arranged. Frame 55 on this stand 70
A magazine 71 for coaxially stacking and holding a large number of circlips 10 is erected on the side of the magazine 71. The many circlips 10 stacked and stored in the magazine 71 are sequentially arranged from the bottommost circlip 10 to the first circlip 10.
It is intended to be supplied onto the component supply means 3 _1, the gantry 70
The upper, a plurality of rollers 72 pivotally supported on the frame 70, and a lower position of the magazine 71, first component supply means 3 ₁
A supply plate 73 is arranged so as to be movable between the upper position and the upper position, and a cylinder 74 (see FIG. 1) supported and fixed on the mount 70 is connected to the supply plate 73.

Supply plate 73, which is positioned above the stationary chute 64, 64 when moved to the first component supply means 3 ₁ side, the distal end portion of the supply plate 73, the lowermost service in the magazine 71 Storage section 75 for storing only one clip 10
Is provided. Moreover, at the position of the forward end of the accommodating portion 75, the tip of the holding member 58 into which the spring receiving member 11 is fitted is
The taper portion 63 is fitted into the housing portion 75 from below and is positioned at a position where the circlip 10 can be held by the taper portion 63.

In such a configuration, the circlip 10 is supplied by the supply plate 73 above the spring receiving member 11 at the ends of the fixed chutes 64, 64, and the holding member 58 rises from below the circlip 10. The small diameter portion 61 is inserted, the circlip 10 is supported by the taper portion 63, the spring receiving member 11 is supported by the step portion 62, and the supply plate 73 is returned to the lower position of the magazine 71. Therefore, the holding member 58 is in a state of holding the spring receiving member 11 downward and the circlip 10 upward at the upper limit position thereof until the circlip 10 and the spring receiving member 11 are gripped by the selective supply means 5. Maintain its upper limit position.

The second component supply means 3 _2, held in the spring receiving member 11 and holding member 58 is supplied similarly circlip 10 corresponding to the outer diameter of the shaft portion 8 of the workpiece W to be conveyed by the second conveying means 2 ₂ And is arranged at a lateral position of the base 14. Moreover, this second component supply unit 3 ₂ and parts associated therewith, the base only in the dimension relating to the outer diameter is different in the first component supply means 3 ₁ and portion and the shaft portion 8 of the workpiece W to be associated The same reference numerals are given to the corresponding parts to show corresponding parts.
Detailed description is omitted.

Referring again to FIGS. 1 and 2, the selective supply means 5 is
An arm portion 76 capable of rotating around a vertical axis and expanding and contracting.
And first and second chuck heads 79, which are respectively arranged at the tip ends or lower ends of the piston rods 77a, 78a in the pair of cylinders 77, 78 fixed to the tip end portions of the arm portions 76 with vertically extending axes. , 80, the first chuck head 79 is provided between the first and second component supply means 3 ₁ , 3 ₂ and the supply stations SM ₁ , SM _2, and the second chuck head 80 is provided with the first and second expansion means. Expanding body standby positions PW ₁ and PW ₂ set at the ends of the opening body returning means 4 ₁ and 4 ₂ , respectively, and a supply station S.
It can move between M ₁ and SM ₂ , respectively.

In FIGS. 13, 14, and 15, the first chuck head 79 includes a head main body 81 fixed to the lower end of the piston rod 77a of the cylinder 77 and a head main body 81 for gripping the spring receiving member 11. A pair of gripping claws 82, 82 which are swingably supported, and both gripping claws 82, 82
A pair of return springs 83, 83 for urging the head main body 8 in order to drive the holding claws 82, 82 in the closing direction.
1, a pair of closing cylinders 84, 84 and a pair of guide rods 85, 85 hanging from a brim 81a fixed to the head main body 81 are brought into contact with the upper surface of the spring receiving member 11. Pressing members 86, 86 that are fixedly installed as appropriate
And a pressing member 87 movably supported by both guide rods 85, 85 so as to come into contact with the circlip 10 from above.
And a spring 88 compressed between the pressing member 87 and the head main body 81 in order to press the pressing member 87 downward.

The head main body 81 is formed in a rectangular block shape that extends long along one diameter line of the piston rod 77a, and brackets 89, 89 are provided at lower ends of both ends of the head main body 81 along the longitudinal direction. The middle portion of each grip claw 82, 82 is mounted on the bracket 8 via a support shaft 90, 90.
9, 89, respectively, and each gripping claw 82, 82
Claws 91, 91 for gripping the spring receiving member 11 when the grip claws 82, 82 are closed are provided in the lower part of the.

The upper portions of the gripping claws 82, 82 are arranged so as to face both ends of the head body 81 in the longitudinal direction, and the gripping claws 82, 82 are parallel to the support shafts 90, 90 at the upper part thereof.
Spring hooks 92, 92 protruding to both sides of the spring hooks 92, 92 are fixedly provided, and return springs 82, 83 are provided between both ends of the spring hooks 92, 92.
Is stretched.

The head main body 81 is internally provided with closing cylinders 84, 84 such that the piston rods 84a, 84a are projected from both ends in the longitudinal direction of the head main body 81. The grip claws 82, 82 are pressed by the rods 84a, 84a, and accordingly the grip claws 82, 82 are rotationally driven in a direction in which the claw portions 91, 91 are brought close to each other, that is, in a closing direction.

On the other hand, a regulating member 94 extending in the longitudinal direction is fixedly provided on the upper portion of the head main body 81, and both ends of the ready-made member 94 in the longitudinal direction are grasping claws on the side opposite to the closing cylinders 84, 84. Ruled projections 9 facing the upper part of 82, 82
5, 95 are integrally provided, and the restriction protrusions 95, 9 are provided.
5 is a screw member 9 that can abut the upper portions of the grip claws 82, 82.
6, 96 are screwed so that they can move back and forth. These screw members 9
By abutting on 6, 96, the grip claws 82, 82 are restricted in the maximum rotation amount in the closing direction.

The pressing member 87 is formed to be long perpendicular to the longitudinal direction of the head body 81, and a pair of abutting projections 9 that can abut the upper surface of the circlip 10 are provided at the lower portion of the pressing member 87.
7,97 abut.

In the first chuck head 79, the first holding means 3 ₁
Alternatively the spring receiving member 11 held by the second holding means 3 ₂
Also, when gripping the circlip 10, the circlip 1 held by the tapered portion 63 of the holding member 58.
0 until the contact projections 97, 97 are brought into contact with the head main body 8
1, the head main body 81 is further lowered while the spring 88 is contracted, and when the pressing members 86, 86 come into contact with the spring receiving member 11, the closing cylinders 84, 84.
To extend. As a result, the grip claws 82, 82 rotate in the closing direction and the spring receiving member 11 is gripped by the claws 91, 91. Then, when the head main body 81 is raised, the spring receiving member 11 and the circlip 10 are separated from the holding member 58, and the circlip 10 elastically contacts the upper surface of the spring receiving member 11 by the spring force of the spring 88. Therefore, the circlip 10 is pressed against the spring receiving member 11, and during transfer by the first chuck head 79,
The circlip 10 is not displaced on the spring receiving member 11.

16 and 17, the second chuck head 80 has a head main body 98 fixed to the lower end of the piston rod 78a of the cylinder 78, and a head for gripping the small-diameter cylindrical portion 30 of the expanding body 18 from both sides. A pair of gripping claws 99, 99 rotatably supported by the main body 98 and an axially extending axis line for rotationally driving the gripping claws 99, 99 are supported and fixed to the head main body 98. An opening / closing drive cylinder 100 is provided.

Both gripping claws 99, 99 have claws 101, 101 at the lower part thereof that can grip the small-diameter tubular part 30 from both sides, and the middle part is rotatably supported by the head main body 98 via support shafts 102, 102. To be done. Further, one ends of the links 103, 103 are connected to the upper portions of both the gripping claws 99, 99, so that both links 1
The other ends of the support shafts 103, 103 are provided at the other ends of the support shafts 102, 102 so that the head main body 98 can move up and down within a limited range.
Are commonly connected to a connecting shaft 105 arranged in parallel.
Moreover, the connecting shaft 105 is connected to the lower end of the piston rod 100a in the opening / closing drive cylinder 100,
When the opening / closing drive cylinder 100 is extended, the two gripping claws 99, 99 rotate in the direction in which the claws 101, 101 are brought close to each other to grip the small-diameter cylindrical portion 30, and the opening / closing drive cylinder 100 is contracted. Both grip claws 99, 99
Rotates in the direction to release the gripped state.

The In FIG. 18, is positioned across the commonly both conveying means ₂ 1, _{2 2} to the station SF ₂ the fitting of the first transport means _{2 first} fitting narrowing station SF ₁ and the second conveying unit _{2 2} On the frame 43, the fitting station S
A first fitting means 6 ₁ corresponding to F ₁ and a second fitting means 6 ₂ corresponding to the fitting station SF ₂ are provided. The first fitting means _61, the positioning member 44
Circlip 1 on the work W that has been positioned by
Fitting head 106 for fitting 0 (see FIG. 19)
When, and a return head 107 for returning after elaborate fitting the circlip 10 to the means 4 ₁ returns the first expanding body removed expanding member 18 from the workpiece W.

In FIG. 19, a support frame 108 is erected on the frame 43, and a cylinder 109 having the same axis as the positioning member 44 is supported on the upper end of the support frame 108.
Fixed. Further, a guide cylinder 111 for guiding the drive rod 110 connected to the cylinder 109 so as to be vertically movable is fixedly provided on the upper portion of the support frame 108.
The leading end, that is, the lower end, of the projection protrudes downward from the guide cylinder 111. In addition, a base end of a support arm 112 extending to one side in the radial direction is fixed to an intermediate portion of the drive rod 110 at a portion projecting downward from the guide cylinder 111. A drive cylinder 113 having an axis extending vertically is supported and fixed. Further, a bracket 114 is fixedly installed at the lower end of the support arm 112, and one end of a swing lever 116 is rotatable on the bracket 114 via a shaft 115 extending in the horizontal direction perpendicular to the axis of the drive rod 110. Supported by. The swing lever 116 is
The driving rod 110 is extended to the piston rod 113 of the driving cylinder 113 at an intermediate portion thereof.
The tip or lower end of a is connected. Therefore, by swinging the drive cylinder 113, the swing lever 116 swings up and down.

The drive rod 110 is positioned below the support arm 112,
The cylinder 117 is supported by allowing relative movement in the vertical direction. That is, the cylindrical body 117 is supported by the drive rod 110 so as to be relatively movable in the axial direction, and the other end of the swing lever 116 is connected to the cylindrical body 117. Therefore, as the swing lever 116 swings up and down, the cylindrical body 117 moves up and down relative to the drive rod 110. Moreover, the lower outer surface of the cylindrical body 117 forms a cam surface 118, and the cam surface 118 is formed in a tapered shape having a larger diameter as it goes upward.

The fitting head 106 is formed by a plurality of pushing members 120 swingably supported by a head body 119.
The head body 119 supports the movement of the cylindrical body 117 by the support arm 112.
And is fixed to the lower end of the drive rod 110 so as to be regulated between them. The head main body 119 is basically formed in a bottomed cylindrical shape with its lower end being an open end, and its inner diameter is formed larger than the outer diameter of the large-diameter guide portion 28 of the expanding body 18. Moreover, the side portions of the head body 119 are notched at a plurality of positions in the circumferential direction.
The pushing members 120 are arranged in the respective positions. Moreover, each pushing member 120 is formed in a circular arc shape together with the head body 119 so as to have a cylindrical shape.

Each pushing member 120 is integrally provided with a connecting arm 122 extending toward the cylinder 117 side, and an intermediate portion of the connecting arm 122 is supported by the head body 119 via a pin 123 perpendicular to the axis of the head body 119. To be done. Moreover, pin 123
A spring 124 is contracted between the pressing member 120 and the head body 119 at a position lower than the spring 12.
The pushing force of each pushing member 120 is urged by the spring force of 4 so as to open the front end, that is, the lower end, to the outside in the radial direction of the head body 119.

A screw member is screwed onto the upper end of the connecting arm 122 as a cam follower 125 that is in sliding contact with the cam surface 118 of the tubular body 117, and each push-in is performed as the tubular body 117 moves up and down relative to the drive rod 110. The member 120 is rotationally driven. The cylinder pair 117 corresponding to the diameter of the shaft portion 8 of the work W
By moving up and down, the tip of each pushing member 120 can correspond to the diameter of the circlip 10 held by the taper guide portion 29 of the expanding body 18, and each pushing member 120 can be changed according to the change of the diameter of the circlip 10. Is formed so as to be pushed into the shaft portion 8 of the work W from the tapered guide portion 29 through the large diameter guide portion 28 by changing the diameter of the workpiece.

An upper portion of a rod-shaped center member 126 penetrating the head body 119 movably is fitted to the lower end portion of the drive rod 110 slidably and coaxially via a sleeve 127. Sleeve 127 on the part
A stopper 128 that extends outward in the radial direction is integrally provided so as to restrict the lowermost position of the center member 126 with respect to the drive rod 110 and the head main body 119 by abutting against. Further, a spring 129 is contracted between the center member 126 and the closed end with a bottomed center hole formed in the drive rod 110 in the vertical direction. The spring force of the spring 129 elastically urges the spring downward. To be done. Moreover, the tip or lower end of the center member 126 is formed so as to have a smaller diameter toward the tip so as to fit into the small-diameter cylindrical portion 30 of the expansion member 18, and the center member 126 contacts the stopper 128 with the sleeve 127. When they are in contact with each other and are in the lowest position, the lower end is in a state of being positioned in the lower part of the fitting head 106.

20, 21, and 22, a drive rod 130 extending vertically is supported by the support frame 108 at a position adjacent to the drive rod 110 so as to be vertically movable and rotatable about its axis. That is, to the support frame 108, a flange portion 132 provided at an intermediate portion of a vertically extending support cylinder 131 is fixed, and the drive rod 130 is allowed to move in the axial direction and rotate about the axis on the support cylinder 131. Supported. Further, a driven gear 134 is rotatably supported by the support cylinder 131 so as to be rotatable about the same axis line so as to be sandwiched between a clamping plate 133 fixed to the upper end of the support cylinder 131 and a flange portion 132, and the driven gear 134 is rotated. Thirteen
A drive gear 135 that meshes with the drive shaft 4 is fixed to an output shaft 136a of a drive motor 136 that has a rotation axis parallel to the drive rod 130 and is fixed and supported by the support frame 108. Therefore, in response to the operation of the drive motor 136, the driven gear 134
Is driven to rotate, and in order to set the rotation amount to, for example, 180 degrees, the drive motor 136 is provided with the operation amount detection switch 1
37 is attached.

A coupling pin 138 is erected on the driven gear 134 at a position deviated from the axis of the driven gear 134. On the other hand, at the upper end of the drive rod 130, a connecting member 139 extending outward in the radial direction is formed.
Is fixed, and a connecting cylinder 140 having an axis extending vertically is fixed near the tip of the connecting member 139.
The connecting pin 138 is inserted into the connecting cylinder 140 while permitting vertical relative movement. Therefore, the driven gear 134 and the drive rod 130 are connected so as to rotate the drive rod 130 in accordance with the rotation of the driven gear 134 and allow the drive rod 130 to move up and down.

A cylinder 141 having an axis line extending along the axis line of the drive rod 130 is fixed and supported on the upper portion of the support frame 108. The tip or lower end of the piston rod 141a in the cylinder 141 and the lower end of the cylinder 141 are driven by the drive rod 13.
The upper end of the connecting rod 142 fixed to the upper end portion of 0 is connected to each other by a joint 143 that allows relative rotation around the axis. Therefore, the drive rod 130 is driven up and down according to the expansion and contraction operation of the cylinder 141. Moreover, the drive rod 13 is located below the support cylinder 131.
A spring 145 that surrounds the support cylinder 131 is contracted between the receiving collar 144 engaged with 0 and the support frame 108.
The spring force of the spring 145 urges the drive rod 130 downward.

A base end of a mounting arm 151 extending outward in the radial direction of the drive rod 130 is fixed to the lower end of the drive rod 130, and the return head 1 is attached to the tip of the mounting arm 151.
07 is attached.

The return head 107 includes a head body 152 fixed to the tip of the mounting arm 151 and a small-diameter cylindrical portion 30 of the expansion body 18.
And a pair of gripping claws 153 rotatably supported by the head body 152 for gripping the
It is stretched over 3,153 and both gripping claws 1
A spring 154 for biasing the opening 53, 153 in the opening direction and a cylinder 155 for driving the holding claws 153, 153 in the closing direction against the spring force of the spring 154 are provided.

The middle portions of the gripping claws 153, 153 are rotatably supported by the head main body 152 by support shafts 156, 156 having an axis line extending in the vertical direction. Claws 157 and 157 for gripping the tubular portion 30 from both sides are provided. Also spring 154
Is stretched between the other ends of the grip claws 153 and 153. Further, protrusions 158 and 158 are formed in portions of the other ends of the gripping claws 153 and 153 facing each other, and the cylinder 155 fixed to and supported by the head main body 152 to enable extension operation to both sides. The protrusions 158 and 158 are interlocked and connected.

Further, a detection switch 159 capable of detecting the expansion body 18 is fixed to the head main body 152, and the cylinder 15 is detected in response to the detection switch 159 detecting the expansion body 18.
5 is operated to extend the two gripping claws 153, 15
The small-diameter cylindrical portion 30 of the expanding body 18 can be gripped by the number 3.

Meanwhile, at a position close to the fitting station SF ₁ has means _{4 1} return start position PS ₁ returns the first expanding element is set, the drive rod 130, fitting station SF ₁ and the return start position PS ₁ Located at a midpoint between the return head 107 and the fitting station SF ₁
And between the return start positions PS ₁ are angularly displaced about the axis of the drive rod 130 by 180 degrees.

The second fitting means 6 ₂ are those having the first fitting means ₆₁ basically the same configuration, only shown in corresponding parts are denoted by the same reference numerals, and detailed description Although not, second fitting means _{6 2} return head 107
Is 1 between the means _{4 and second} return start position PS ₂ returns the second conveying unit _{2 2} fitted narrowing station SF ₂ and the second expansion member
It can be angularly displaced over a range of 80 degrees.

In FIG. 18 again, the first expanding body returning means 4 ₁ is a conveyor laid between the returning start position PS ₁ and the expanding body standby position PW ₁ , and the second expanding body returning means 4 1
Reference numeral ₂ is a conveyor laid between the return start position PS ₂ and the spreader standby position PW ₂ . Therefore, the expanding body 18 which is gripped by the return head 107 and released from the gripped state at the return start positions PS ₁ and PS _2.
Is returned to the expanded body standby positions PW ₁ and PW ₂ by the first and second expanded body returning means 4 ₁ and 4 ₂ .

The first sorting means 7 ₁ is carried by the first carrying means 2 ₁ 2
Two kinds of expansion bodies 18 respectively corresponding to kinds of works W
In order to stand by at the expansion body standby position PW ₁ while selecting and aligning, the first expansion body returning means 4 ₁ is attached, and the expansion body is returned from the middle portion of the first expansion body returning means 4 _1. Up to the open-body standby position PW ₁ is an integrated standby area s ₁ , s arranged in parallel.
_The partition 160 includes a partition 160, a sorting blade 161 arranged at the upstream end of the partition 160, and a motor 162 that rotates the sorting blade 161 according to the stored identification result of the identifying unit 31.

The sorting blade 161 selectively closes one of the two passages partitioned by the partition wall 160 and opens the other,
By the action of the first sorting means 7 ₁ 2 kind of the expanding body 18
Are returned to the spreader waiting position PW ₁ such that the same kind of objects are aligned in the same waiting area s ₁ .

Second sorting means 7 ₂ is to be configured to the first sorting means ₇₁ basically the same, and only shown in corresponding parts are denoted by the same reference numerals, omitting detailed description To do. Thus, the spread body standby positions PW ₁ and PW ₂ are provided near the transport lines L ₁ and L ₂ so that the plurality of types of spread bodies 18 stand by according to their types. It constitutes the standby unit.

Next, the operation of this embodiment will be described. The first conveying means 2 ₁ , the first component supplying means 3 ₁ , the first expanding body returning means 4
_1, the action of the first fitting means ₆₁ and the first sorting means _71, the second conveying unit _{2 2,} the second component supply means _{3 2,} means _{4 2} back second expanding member, a second fitting means since the 6 ₂ and the second action of the sorting unit _{7 2} basically the same, hereinafter, the first transport means _{2 1,} the first component supply means _{3 1,} means _{4 1} returns the first expanding member, first fitting means _{6 1} and the first sorting means 7
Only the action of ₁ will be described.

Workpiece W conveyed by the first conveying means 2 _1, high shaft portion 8 by the identification means 31 is stopped temporarily at the identification station SI _1, after being identified low, supply stations SM ₁
Move to and stop. Thus elevating cylinder 23 is extended operation, the workpiece W by the push-up unit 25 is pushed up over the first conveyor means 2 _1, is pressed against the positioning member 20. That is, the work W is positioned and fixed at the supply station SM ₁ .

On the other hand, the selective supply means 5 determines which of the two types of the expansion bodies 18 at the expansion body standby position PW ₁ to be gripped based on the identification result of the identification means 31, and the second chuck head 80. Thus, the expanding body 18 at the expanding body standby position PW ₁ is gripped. Then, gripping the circlip 10 and the spring receiving member 11 in a state held by the first component supply means 3 ₁ of the holding member 58 in the first chuck head 79.

After such gripping is completed, the selective supply means 5 has the expanding body 18, the circlip 10 and the spring receiving member 1.
1 is transferred to the supply station SM ₁ . Next, the expanding body 18 grasped by the second chuck head 80 is lowered coaxially with the shaft portion 8 of the work W positioned by the positioning member 20, and the small-diameter fitting portion 26 of the expanding body 18 forms the shaft portion. 8
The gripping state of the expanding body 18 by the second chuck head 80 is released in a state of being fitted to the tip of the.

Thereafter, the circlip 10 and the spring receiving member 11 gripped by the first chuck head 79 are brought to the same upper axis of the expanding member 18 and lowered, and the spring receiving member 11 causes the large-diameter guide portion 28 of the expanding member 18. The gripped state is released when it is fitted to. Then, the spring bearing member 11 is fitted in the large-diameter guide portion 28, and the circlip 10 is tapered.
To fit. Therefore, the selective supply means 5 returns the first and second chuck heads 79 and 80 to their original positions in preparation for the next work W.

Circlip 10 and the spring receiving member 11 elevating cylinder 23 in a state of being mounted is contracted activated via the expanding member 18 to the work W, the workpiece W is returned onto the first conveyor means 2 _1, fitting station SF ₁ Be transported to. During this time, since the expanding body 18 is fitted to the work W, the expanding body 18 does not drop off from the work W due to vibration during conveyance, and therefore, the circlip 10 and the spring receiving member 11 are provided.
The state of being attached to the work W is maintained.

When the workpiece W is stopped once reached the fitting station SF _1, the lift cylinder 50 is extended operation, the workpiece W is lifted from the first transport means 2 _1, is pressed against the positioning member 44. Thereby, the large-diameter guide portion 2 of the expansion member 18
The spring receiving member 11 fitted to the
The spring 12 is pressed down while being compressed by the engaging stepped portion 47, and is brought into a state of being fitted to the shaft portion 8.

In this state, the fitting head 10 of the _first fitting means 6 ₁
6 descends first, and the center member 126 fits into the center hole of the small diameter tubular portion 30 of the expansion member 18. Further, the fitting head 106 continues to descend, and the pushing member 120 pushes down the circlip 10 while expanding it. Therefore, the circlip 10 descends while expanding along the taper guide portion 29 and moves from the large diameter guide portion 28 to the shaft portion 8 of the work W,
Fit in the annular groove 9. When the circlip 10 fits in the annular groove 9, the fitting head 106 moves up to its original position.

Then, the first fitting means ₆₁ of the return head 107 is rotated directly above the workpiece W, the Ritanheddo 107
Descends and grips the small-diameter cylindrical portion 30 of the expansion body 18. Next, the return head 107 rises and rotates by 180 degrees to reach the return start position PS ₁ , and the first expansion body return means 4 ₁
The gripped state is released to return the expanding body 18 to the upper side. Expanding body 18 returned to the unit 4 _first return first spreader member by the first action of the selection means _71, the expanding body waiting position PW _1, waiting area s in accordance with the type of the enlarged Hirakitai 18 _It returns to ₁ and remains in the aligned state there, and then waits until it is gripped by the second chuck head 80.

On the other hand, at the fitting station SF ₁ , the work W into which the receiving member 11 and the circlip 10 are fitted returns to above the first transport means 2 ₁ in accordance with the contraction operation of the lifting cylinder 50,
It is transported along the transport direction 17 for mounting other components.

In this manner, the circlip 10 and the spring receiving member 11 are efficiently fitted into the shaft portion 8 of the work W by using the plurality of kinds of expanding bodies 18, and the expanding body 18 is not attached after the fitting work is completed. Automatically returns to its original position and stands by in preparation for the next operation, eliminating the need for complicated replacement work.

The present invention is not limited to the above-described embodiment, but means for measuring the outer diameter of the shaft portion 8 of the work W is additionally provided to the identification means 31, and the shaft portion of the work W on a single conveying means is provided. The outer diameter and the height of 8 may be identified, and the expansion body 18, the circlip 10 and the spring bearing member 11 may be selected based on the result. Further, the shaft portion 8 in the work W
Identification, supply of the expansion member 18 and fitting to the shaft portion 18, supply of the spring receiving member 11, supply of the circlip 11, pressing of the spring receiving member 11 and fitting of the circlip 10. The expansion body 18 may be taken out at different stations. Further, the expansion body 18 may be fitted to the shaft portion 18 of the work W, and then the piston 13 and the spring 12 may be supplied and assembled. If the shaft portion 8 of the work W is not cylindrical, the expansion body 18 is provided. The shaft 18 may be externally fitted to the shaft portion 8.

C. EFFECTS OF THE INVENTION As described above, according to the method of the present invention, a plurality of types of expanding bodies are prepared corresponding to a plurality of types of works conveyed on the conveying line, and the expanding bodies are expanded near the conveying line. Since a plurality of waiting areas of the body waiting section are made to stand by according to the type of the expanding body, when selecting the expanding body by identifying the type of work being conveyed, the selection work can be performed very efficiently and accurately. In addition to being able to perform it, it is possible to quickly fit it to the free end of the shaft of the work after it has been selected. Therefore, even when multiple types of work are randomly mixed and carried on the same carrying line, An appropriate expansion body according to the type of the work can be set extremely quickly and accurately on the work shaft portion, which can greatly contribute to the improvement of the replacement work efficiency of the expansion body.

After fitting the circlip, the expansion body is removed from the free end of the shaft and returned to the original waiting area of the expansion body standby section near the transport line. The work can be performed efficiently, and the spreader after use is quickly returned to each standby area of the spreader standby part, so the number of spreaders waiting in each standby area is minimized. Therefore, it is possible to use each expansion body efficiently.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a schematic plan view of the whole, Fig. 2 is a front view taken along the line II of Fig. 1, Fig. 3 is a longitudinal sectional view of a work, and Fig. 4 1 is an enlarged sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a longitudinal sectional view of the expanding body, and FIG. 6 is VI in FIG.
FIG. 7 is an enlarged view of the part, FIG. 7 is a view taken in the direction of arrow VII of FIG. 6, and FIG.
Fig. 9 is a sectional view taken along line VIII-VIII, Fig. 9 is an enlarged sectional view taken along line IX-IX of Fig. 2, Fig. 10 is an enlarged view of portion X of Fig. 1, and Fig. 11 is line XI-XI of Fig. 10. A sectional view, FIG. 12 is a sectional view taken along line XII-XII of FIG. 10, FIG. 13 is an enlarged vertical side view of the first chuck head, FIG. 14 is a sectional view taken along line XIV-XIV of FIG. 13, and FIG. Is a view as seen from the arrow XV in FIG. 13, FIG. 16 is an enlarged vertical side view of the second chuck head, and FIG.
FIG. 18 is a sectional view taken along line XVII-XVII in FIG.
FIG. 19 is an enlarged sectional view taken along line XIX-XIX in FIG. 18, FIG. 20 is an enlarged sectional view taken along line XX-XX in FIG. 18, and FIG. 21 is sectional view taken along line XXI-XXI in FIG. 22 is a sectional view taken along line XXII-XXII in FIG. L ₁ , L ₂ ... _First and _second transport lines as transport lines, PW ₁ , PW ₂ ... Spread body standby position as spread body standby portion, s ₁ , s ₂ ... Standby area, 8 …… Shaft, 9 ……
Annular groove, 10 ... Circlip, 18 ... Expanding body, W ... Work

Claims (1)

[Claims] 1. A circlip (10) on the outer periphery near the free end.
A plurality of types of works (W) provided with a shaft portion (8) provided with an annular groove (9) to be fitted into a predetermined transfer line (L).
₁ , L ₂ ) are sequentially conveyed, and the circlip (10) is fitted into the annular groove (9) of the work (W) during the conveyance, An expanding body (18) having a taper guide part (29) for expanding and guiding the circlip (10) at the free end of the shaft part (8) of the work (W) is provided in the work (W). A plurality of types are prepared corresponding to the types of the above, and the expansion bodies (18) are provided to the transfer line (L ₁ ,
Expanding body stand unit provided in the vicinity of the _{L 2) (PW 1, PW} 2)
Of the plurality of waiting areas (s ₁ , s ₁ ; s ₂ , s ₂ ) waiting for each type of the expanding body (18) and the type of the work (W) sequentially transported, The expansion body (18) corresponding to the identification result is attached to the expansion body standby unit (PW).
₁ , PW ₂ ) and fitting the free end of the shaft (8) of the work (W), and supplying the circlip (10) to the fitted expansion body (18). And a step of fitting the supplied circlip (10) into the annular groove (9) of the work (W) while pressing and expanding the circlip (10) along the taper guide portion (29) of the expanding body (18). After the circlip (10) is fitted, the expansion body (18) is removed from the free end of the shaft portion (8), and the expansion body standby portion (PW ₁ , PW ₂ ) is attached.
Returning to the original waiting area (s ₁ , s ₁ ; s ₂ , s ₂ ) of No. 3, the method for inserting a circlip into a work.