JPS60135139A - Automatic assembler for snapring - Google Patents

Abstract

PURPOSE:To improve the productionability of an automatic assembler for snapring, by enabling automatic assembling of snapring to be fitted in the outercircumferential groove of sleeve to hold a springboard under resiliently deformed state. CONSTITUTION:Parts to be assembled are comprised of a hab sleeve 39 formed with an outercircumferential groove 43 and a springboard 42 fitted over said sleeve 39. Automatic assembler for fitting a snapring (a) in the outercircumferential groove 43 of said parts is comprised of a guide body 31 for fitting snapring (a) over the outercircumference, carrying mechanism 2 for carrying saig guide body 31 to fit the lower end section in the hab sleeve 39 and a tubular press body to be fitted over the guide body 31. Furthermore, a press mechanism for lowering the press body while inserting the guide body 31 to press a snapring (a) held on the guide body 31 and fit in the outercircumferential groove 43 is provided.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an automatic method for inserting a snap ring into an outer circumferential groove formed in the sleeve to hold a leaf spring fitted in a sleeve in an elastically deformed state. Regarding assembly equipment.

[Technical background of the invention and its problems]

For example, in the clutches of automobiles, autopipes, etc., which are parts to be assembled, a clutch disk, a pressure plate, and a leaf spring are sequentially assembled into a hub sleeve provided in a housing song. Further, the hub sleeve is formed with an outer periphery 11'47, and a snagging ring is fitted into this outer circumferential groove, and the leaf spring is held in an elastically deformed state by the snagging ring. and,
The restoring force of the plate spring pressurizes the clutch disc through the pressure grating, and the clutch disc and the housing are coupled to each other under body weight.

By the way, in the conventional process for assembling such a latch, the work of fitting the snap ring into the outer circumferential groove of the hub sleeve was performed manually. The operator used a tool to fit the snap ring, whose diameter had been expanded, into the outer circumferential groove while elastically deforming the leaf spring. For this reason, there were four groups who found it difficult to improve productivity because the work required a great deal of effort and skill.

[Purpose of the invention]

The present invention provides an automatic snap ring assembly device that is capable of automatically assembling a snap ring that is fitted into the outer circumferential groove of a sleeve and holds the leaf spring in an elastically deformed state into the outer circumferential groove. be.

[Summary of the invention]

This invention includes a guide body on which a snap ring is fitted and held on its outer periphery, and a guide body that is held and conveyed so that its lower end is fitted into a sleeve having an outer circumferential groove into which the snap ring is fitted. It has a conveyance mechanism and a cylindrical pressing body that is fitted onto the guide body, and the snap ring held on the guide body is removed by lowering the pressing body into the inside of the pressing body while inserting the guide body. This is an automatic assembly device equipped with a press mechanism that presses and fits into the outer circumferential groove.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing the overall configuration of the automatic assembly device.

This device N includes a parts feeder 1, a transport mechanism 2, and a transport mechanism 2 disposed in front of the parts feeder 1.
A press mechanism 3 arranged between the to-ya-tsu feeder 1
, a discharge conveyor 4 arranged on the side of this press mechanism 3
and a carry-in conveyor 5 disposed orthogonal to the carry-out conveyor 4 with its end facing the press mechanism 3.

The above-mentioned parts feeder 1 has two upper and lower discharge ducts 6.7 connected to holes t+ and la. A snap ring a, which will be described later, is generally taken out from the upper discharge duct 6, and the same from the lower discharge duct 7. A washer b, which will be described later, is to be carried out. Although not shown, a shutter that can be opened and closed is provided at the tip of each carry-out duct 6.7, and the above-mentioned snap ring a and washer b of ψ; are in contact with each other and are held so as not to fall from each delivery duct 6.7.

``D. The conveyance mechanism 2 has a carrier 8 supported movably in a direction perpendicular to each of the above-mentioned discharge ducts 6.7,
A first grit arm 9 and a second grit arm 10 are attached to the carrier 8 at predetermined intervals along its longitudinal direction. At one longitudinal end of the carrier 8 is a cylinder 1.
1 rod 12 is connected, and the carrier 8 is reciprocated by the cylinder 11 with a predetermined stroke in the direction of the arrow. When the rod 12 of the cylinder 11 protrudes, the first gripper faces the tip of each outlet duct 6, 7, and the second gripper 1O
is opposed to the free-rest mechanism 3. Furthermore, when the rod 12 of the cylinder 1 moves backward, the first gripper 9 faces the press mechanism 3, and the second gripper 1O moves to the unloading conveyor 4.
It seems to be located above the .

The first grid/49 Fi shown in FIGS. 3 and 4 is constructed as shown in FIG. That is, the board 15 is attached and fixed to the gear rear 8. An upper mounting plate 16 is horizontally connected to the upper end of the substrate 15, and an Fi and F part number plate 17 is horizontally connected to the lower end.

An upper cylinder 18 is held vertically on the upper mounting plate 16, and a lower cylinder 19 having a stronger force than the upper cylinder 18 is held vertically 1t1 on the lower mounting plate 17. The upper cylinder 18 and the lower cylinder 19 are arranged on the same axis. -1 A support body 2) is attached to the lower end of the rod 2O of the cylinder 18. This support 21 has t
A horizontal cylinder 22 is provided perpendicularly to the surface of the substrate 15. One end of a crank-shaped movable body 24 is connected and fixed to the rod 23 of this horizontal cylinder 22. A protrusion 26 is provided on the upper surface of the intermediate portion 25 of the movable body 24, and the protrusion 26 is slidably engaged with a guide groove 28 of a guide member 27 horizontally attached to the support body 21. Further, an opening/closing mechanism 29 is provided at the other vertical end of the movable body 24, and the pair of clamping bodies 30 are opened and closed in the horizontal direction by this opening/closing mechanism 29. A guide body 3 is held between these holding bodies 30 as shown in FIG. The upper half of this guide body 31 is formed into a tapered part 31a whose diameter gradually increases downward, and the lower half is formed into a straight part 32, and a small diameter part 33 protrudes from the lower end surface of this straight part 32. It is set up. Therefore, the guide body 31 held between the pair of clamping bodies 30 includes the two-part cylinder 18 and the horizontal cylinder 22.
It is designed to be driven vertically and horizontally by Note that when the rod 20 of the upper cylinder 18 protrudes, the lower end surface of the support body 21 is connected to the lower cylinder 19.
0 rod 34. Therefore, lower cylinder 1
By changing the protruding length of the rod 34 of 9, the lowering position of the support body 2 and the lowering position of the guide body 31 can be changed.

Further, the support body 21 includes an upper plate 16 and a lower plate 1.
The vertical movement is guided by a pair of id rods 35 whose upper and lower ends are connected to 7.

The second gripper 1o has the same structure as the first gripper 9 except for the shape of the pair of clamping bodies 3o. In other words, the pair of clamping bodies 3o of the second grits 'e1O are shaped so as to be able to clamp the clutch 36, which is a component to be assembled, transported by the carrying-in conveyor 5. The clutch 36 includes a housing 38 having a drive gear 37 formed on its outer circumferential surface, a hub sleeve 39 erected at the center of the housing 38, and a hub sleeve 39 that is attached to the hub sleeve 39 in sequence, as shown by the chain line in FIG. It consists of a clutch disc 40, a pressure grate 412, and a leaf spring 42 that are fitted together. The buzz sleeve 39 has an outer circumference of 1
'? f 43 is formed in this outer circumferential groove 43, and the above-mentioned collar b, snapper, and knolling a are fitted into this outer circumferential groove 43 as described later.
The leaf spring 42 is held in an elastically deformed state against the bale base.

The inner diameter of the hub sleeve 39 is approximately large enough to fit the small diameter portion 33 of the force-id body 3.
The outer diameter dimension is approximately the same as the outer diameter dimension of the straight portion 32 of the guide body 3.

The above-mentioned brace mechanism 3 is mounted on a mount 4 as shown in FIGS. 5 and 6.
It is equipped with 5. This frame 45 has a pair of supports 46 erected on both sides of the upper 1jl-, + carrier conveyor 5 in the width direction,
It consists of a plate 47 with Jt (=J) cut horizontally on the upper end of this column 46. This mounting plate 47 has a pressure cylinder 4
8 are installed vertically. Several pressing bodies 5o are provided on the rod 49 of this pressurizing cylinder 48. This suppressor 5O has a cylindrical shape with an inner diameter that allows the guide body 3) to be inserted therein, and one end thereof is entirely fitted into the rod 49 and connected and fixed with a pin 61. It also serves as a pressing surface 53 that presses the leaf spring 42 of the lower part 36 of the pressing body 5o.

Further, a lever 5 is provided below the end of the carrying-in conveyor 5.
5 is placed. This lifter 55 operates at a timing described later to raise the clutch 36 on the carry-in conveyor 5 from above this conveyor 5.

Next, the operation of the automatic assembly apparatus having the above structure will be explained. First, in the initial state, as shown in FIG. 1, the first gripper 9 holds the guide body 3 and faces the tip of the delivery duct 6°7 of the parts feeder 1, and the second gripper 1o It faces the press mechanism 3. Sorry, the clutch 36 transported by the carry-in conveyor 5 faces below the pressing body 5o of the press mechanism 3. In such a state, when the operation start signal 1 is input, the water 5r-silling 22 of the first gripper 9 is actuated to move the guide body 31 as shown by the chain line in FIG. After moving forward in the direction of 1, the upper cylinder 1
8 operates to raise the guide body 31. As a result, the snap ring a and the washer b located at the most extreme ends of the delivery ducts 16 and 7 of the feeder I are fitted onto the tip 1331a of the guide body 3.

The inner diameter of the snack O-ring a is smaller than the outer diameter of the straight portion 32 of the guide body 3, and the inner diameter of the washer b is larger than the outer diameter of the straight portion 32. Therefore, the snap ring a fitted onto the tapered portion 31fi is caught in the middle, but the washer b falls at 1 when it hits the clamping body 3O.

When the guide body 3 takes out the snap ring a and the washer b from the parts feeder 1, the rod 23 of the horizontal cylinder 22 moves in the retracting direction to retract the guide body 3, and the rod 20 of the upper cylinder 18 The guide body 31 is lowered by operating in the projecting direction. In this state, the cylinder 1 of the transport mechanism 2 operates and its r-1°
2 is driven in the retracting direction, the carrier 8 slides, the first gripper 9 faces the soleless mechanism 3, and the second gripper 10 is positioned above the carry-out conveyor 4. Next, the horizontal cylinder 2 of the first gripper 9
2 operates to move the guide body 31 forward, and this guide body 3
The small diameter portion 33 of the clutch 36 is positioned opposite to the knob sleeper 39 of the clutch 36 positioned at the end of the carry-in conveyor 5.

Next, as shown in FIG. Fit the small diameter portion 33 of . When the guide body 3 is fitted into the bushing sleeve 39, the pressurizing cylinder 48 of the press mechanism 3 is actuated, and the suppressing body 50 is moved 1111 times. At the same time, the first Grit! When the clamping body O of 9 is opened, the horizontal cylinder 22 is operated to move the clamping body 30 backward, that is, to move it out of the way of the lowering of the suppressing body 50.

When the suppressing body 50 is lowered as shown by the chain line in FIG. 6, the guide body 3 enters into the suppressing body 50. And guide body 3
The snagging ring a hooked on the tapered portion 31a of the press member 50 enters the four portions 52 formed between the lower ends of the pressing member 50, and descends along the guide member 31 while being pressed by the recess HB s 2. When the snap ring a moves from the chi 12 portion 31b of the guide body 3 to the straight portion 32, the diameter is expanded according to the outer diameter dimension of the straight portion 32. Further, the washer b falls along the guide body 31 when the pair of clamping bodies 3O is opened, and is fitted into the no-pusleep 3g and joined to the leaf spring 42 of the clutch 36. When the suppressor 50 further descends and the press surface 53 formed on its lower end surface presses against the washer b, the central portion of the leaf spring 42 is elastically deformed via the washer b.

The four parts 52 are connected to the outer circumferential groove 4 of the knob sleeve 39.
When the snug ring a is lowered to a position opposite to the groove 3, the snug ring a that is in the recess 52 returns to its enlarged state and fits into the outer circumferential groove 43. At this time, the pressing surface 53 of the pressing body 50 presses the plate spring 42 via the washer b, and the snap ring a housed in the fourth part 52 is pressed by the rear force of the plate spring 42. Therefore, the diameter of the snap ring a is smoothly reduced from the expanded state to the state where it fits into the outer periphery #43.

In this way, you can put the snap ring a to sleep39.
When the pressurizing cylinder 48 is fitted into the outer circumferential groove 43 of the pressurizing cylinder 48, the pressurizing cylinder 48 operates in the opposite direction to raise the suppressing body 5θ. Further, when the suppressing body 50 rises, the pair of clamping bodies 30 of the first grit 9 move forward and clamp the guide body 31. The handle 55 on which the guide body 31 is clamped operates and the clutch 3
6 is lowered, this clutch 36 is placed on the third person conveyor 5, and is released, and the small diameter portion 33 of the guy 1 degree body 3 is pulled out from the hub sleeve 39. In such a state, the 7 cylinders 1 of the transport mechanism 2 operate to move the carrier 8 and make the first grip 9 face the parts feeder 1, thereby returning to the initial state. do.

The second gripper 10 operates simultaneously when the first grip groove 9 grips and the guide body 31 picks up the snap ring a and the washer b from the parts feeder l. That is, as described above, when the clutch 36 in which the snap ring a is fitted into the outer circumferential groove 43 of the hub sleeve 39 is on the carry-in conveyor 5, it operates together with the first gripper 9. Then, the carriage 36 is taken out from the carry-in conveyor 5 and placed on standby.The carrier 8 is driven by the transport 1 and the horizontal 2, and the second gear IJ :)/j l (7
When facing the carry-out conveyor 4, F1f is activated to move the clutch 36 onto the carry-out conveyor 4 by a width l,! 1st birthday.

Therefore, according to the automatic assembly apparatus having the above configuration, the snapper and f-ring a can be fully automatically fitted into the outer circumferential groove 43 of the hub sleeve 39 of the clutch 36. In addition, the guide body 31 as a jig used at that time has a size of 1 piece in order to be used repeatedly.

Note that the present invention is not limited to the above-mentioned embodiment, and the parts to be assembled may be other than the clutch.In short, the part to be assembled has a plate spring and a sleeve, and the above-described Any material that requires elastic deformation of the leaf spring to fit the snap ring may be used.

Also, when fitting the small diameter part of the guide body into the sleeve,
Although the clutch is raised, the guide body may be lowered. For example, a first gripper is provided with a cylinder or the like that moves a pair of clamping bodies downward, and this mechanism is operated to move the guide body clamped by the clamping bodies.
All you have to do is make it turn T"l'.

Also, the snap ring may be attached to the guide body by hand without using the L parts feeder.

〔Effect of the invention〕

As described above, the present invention includes a guide body on which the snap ring is fitted and held, and an outer circumferential groove in which the guide body is held and conveyed and the snap ring is inserted into the lower end thereof. Conveyor fil that fits into the sleeve
and a cylindrical pressing body that fits onto the guide body, and by lowering the pressing body with the guide body inserted inside the pressing body, the snap ring held on the guide body is pressed. An automatic assembly device was constructed from a press mechanism that was fitted into the outer circumferential groove. Therefore, it is possible to automatically attach the snap ring to the outer groove of the sleeve by elastically deforming the leaf spring fitted to the sleeve, which previously had to be done manually.The work efficiency can be greatly reduced. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the entire device, FIG. 2 is a side view, FIG. 3 is a front view of the transport mechanism, FIG. 4 is a side view, and FIG. is a front view of the press mechanism, and FIG. 6 is a side view of the same. 2... Conveyance mechanism, 3 grip mechanism, 31 instep guide body,
36... Clutch (parts to be assembled), :t 9 Upper hub sleeve, 42... Plate, 43... Outer circumference 4.5O
... Pressing body, 52 ... Recessed part, a ... Snap ring. Friend agent Patent attorney Suzue Takehiko 9 b Figure 2

Claims (2)

[Claims] (1) In an automatic assembly device in which a to-be-assembled part is composed of a sleeve in which an outer circumferential groove is formed and a leaf spring fitted in advance to this sleeve, and a snap ring is fitted into the outer circumferential groove of this to-be-assembled part. , a guide body on which the snap ring is fitted and held on the outer periphery; a conveyance mechanism that pinches and conveys the guide body and fits the F end into the sleeve;
By inserting a cylindrical pressing body that fits onto the guide body and lowering the pressing body while inserting the guide body into the body, the snagging ring held by the guide body is pressed. An automatic snap ring assembly device characterized by comprising a press mechanism for fitting into an outer circumferential groove. (2) The suppressing body of the press mechanism is characterized in that a recess into which the snagging ring is inserted is formed in the lower end surface, and the lower end surface on the outer peripheral side of this recess comes into pressure contact with the leaf spring of the part to be assembled. Range r: +; 1 Automatic assembly system for snagging ring described in JJh +i'i.