JPH0540898Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention uses a snap spring that is engaged with a shaft member to regulate the position of a hub, etc. fitted thereto, for assembling a shaft member, etc. The present invention relates to a snap spring assembly device that automatically engages a target member.

(Prior Art) When a hub, gear, etc. is fitted to a shaft member, the position of the hub, gear, etc. relative to the shaft member can be controlled by engaging a snap spring in a groove formed in the shaft member. Are known. In such a case, the snap spring is assembled into the groove formed in the shaft member by fitting the snap spring, which is a ring-shaped member with a portion cut out, from one end of the shaft member with its inner diameter expanded. Engage with the groove.

As described above, an assembly method in which a partially cut ring-shaped member is expanded in its inner diameter and fitted into a member to be assembled from one end thereof, and engaged with a predetermined portion of the member to be assembled is, for example, It is also used when attaching a piston ring to a groove provided on the peripheral surface of a piston inserted into an engine cylinder.

It is desirable that this be done automatically when assembling a ring-shaped member such as a snap ring or piston ring into a predetermined part of a shaft member or piston as described above. For example, as a device for automatically attaching the
As shown in Japanese Patent No. 206331, an automatic piston ring insertion device has been proposed. In such a device, a guide member is used, which has a funnel shape, and whose lower end, which is the large-diameter end, is engaged with the upper part of the piston, which is disposed with the top facing upward. After the ring is fitted into the guide member from its upper end, which is the small-diameter end, the ring is moved downward along the outer circumference of the guide member, so that its inner diameter is expanded; It is transferred from the guide member to the piston and engaged in a groove provided in the piston. After the piston ring has been installed on one piston, the guide member is moved from the position where it engages with the piston to the upper position so as not to prevent the new piston from being placed in the position where the piston ring is installed. They are forced to evacuate.

(Problem to be solved by the invention) However, using a guide member that is engaged with the upper part of a member to be assembled such as a piston, such as the above-mentioned automatic piston ring insertion device, it is possible to insert a ring-shaped member such as a piston ring. In the case of a device that engages a member to be assembled by fitting the guide member from its upper end, the guide member is lowered from the upper position each time a ring-shaped member is attached to each member to be assembled. The guide member is engaged with the upper part of the member to be assembled, and then moved from the position where it engages with the member to be assembled to the upper position. Therefore, the operation of holding the guide member and raising and lowering it is performed intermittently. A guide member elevating mechanism is required, which results in a significantly complicated structure. In addition, since the ring-shaped member is fitted from the upper end of the guide member that is engaged with the upper part of the member to be assembled, when the guide member is engaged with the upper part of the member to be assembled, The guide member is not supported by the lifting and lowering mechanism, and as a result, the state of engagement of the guide member with the upper part of the member to be assembled becomes inappropriate with undesirable inclination, etc., and as a result, There is a possibility that the ring-shaped member may not be properly attached to the member to be assembled.

In view of this, the present invention provides a combination of relatively simple mechanisms for automatically engaging a snap spring at a predetermined location of a member to be assembled, such as a shaft member to which a hub or gear is fitted. It is an object of the present invention to provide a snap ring assembly device that can easily and reliably achieve a state in which a snap spring is properly engaged with a predetermined portion of a member to be assembled.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a snap spring assembly device according to the present invention has a shaft-like or cylindrical member provided with a groove portion to which a snap spring is to be engaged, and a shaft-like or cylindrical member provided with a groove portion to which a snap spring is to be engaged. a support mechanism that supports the part in a predetermined direction, a snap spring supply section that supplies the snap spring, and a ring attachment that once receives the snap spring supplied from the snap spring supply section and then engages with the groove of the shaft-shaped or cylindrical member. and a ring transfer attachment mechanism that attaches the snap spring supplied from the snap spring supply unit to the ring attachment mechanism before the snap spring is engaged with the groove of the shaft-like or cylindrical member,
The ring transfer attachment mechanism has a tapered portion formed at the tip portion, into which the snap ring supplied by the snap ring supply unit is fitted, and the inner diameter of the snap ring is made larger than the outer diameter of one end of the shaft-shaped or cylindrical member. A temporary receiving guide member that has an inner diameter and is expanded to be larger than the outer diameter of a fitting guide member that is fitted to one end side of a shaft-shaped or cylindrical member, and a temporary receiving guide member that is expanded from the position of the tip portion of the temporary receiving guide member. an insertion guide member having a distal end portion that protrudes and is inserted into the fitting guide member;
They are combined coaxially to form a cylindrical part as a whole, and are movably fitted into the cylindrical part, and when the tip of the insertion guide member is inserted into the fitting guide member. , a movable pressing member is provided which presses and moves a snap ring fitted to the temporary receiving guide member by one end thereof to fit it to the outer periphery of the fitting guide member, and further, the ring mounting mechanism is configured as described above. The mating guide member has an inner diameter larger than the outer diameter of the shaft-like or cylindrical member, and is movably disposed on the outer circumferential side of the mating guide member, and the mating guide member has a shaft-like or cylindrical shape. The press fitting member is fitted to one end of the member and presses and moves the snap spring fitted to the fitting guide member to engage with the groove of the shaft-like or cylindrical member. It is composed of

(Function) In the snap spring assembling device according to the present invention configured as described above, the snap spring supplied by the snap spring supply section firstly
The inner diameter is expanded and fitted into the temporary guide member in the ring transfer attachment mechanism, and then the ring transfer attachment mechanism expands the outer diameter of one end of the shaft-shaped or cylindrical member. It is fitted onto the outer periphery of a fitting guide member in a ring mounting mechanism which is fitted onto one end of a shaft-like or cylindrical member having an inner diameter, and further includes a fitting guide member thereafter. With the ring attachment mechanism, when the fitting guide member is fitted to one end of the shaft-shaped or cylindrical member, the snap ring fitted to the outer periphery of the fitting guide member is attached to the shaft-shaped or cylindrical member. It is engaged with the groove.

By doing so, a relatively simple ring transfer mounting mechanism and a ring mounting mechanism each including a movable member into which the snap spring supplied by the snap spring supply unit is temporarily fitted is provided. Under the combination of mechanisms, the snap spring, which is once fitted into the fitting guide member in the ring mounting mechanism, is attached to the shaft when the fitting guide member is fitted to one end of the shaft-shaped or cylindrical member. Since the snap ring is moved into the groove of the shaft-like or cylindrical member, it is possible to ensure that the snap spring is properly engaged with the groove of the shaft-like or cylindrical member.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 and 2 show an example of a snap spring assembly device according to the present invention.

In this example, a shaft member W to which a hub is fitted is shown.
In order to regulate the position of the hub with respect to the shaft member W, the snap spring R is automatically assembled, and the main component is a shaft member that supports the shaft member W with one end thereof facing upward. A support mechanism 10, a snap spring supply section 11 that supplies the snap spring R, and a snap spring supply section 1
a ring mounting mechanism 12 that once receives the snap ring R supplied from 1 and then engages it with the shaft member W;
A ring transfer attachment mechanism 13 that attaches the snap ring R supplied from the snap ring supply section 11 to the ring attachment mechanism 12, a fixed support section 14 that supports the ring attachment mechanism 12, and a shaft member support mechanism 1
0, a control unit 15 that controls the operations of the snap ring supply section 11, the ring mounting mechanism 12, and the ring transfer mounting mechanism 13.

In the shaft member support mechanism 10, a pallet 21 for fixing the shaft member W with one end thereof facing upward, the pallet 21 is movably mounted,
The placed pallet 21 is transferred to the parallel rail guide 22
The chain roller 22 moves along
A lifting cylinder 23 for raising and lowering the pallet 1 and a stopper cylinder 24 for stopping the movement of the pallet 21 by the chain roller 22 by coming into contact with the end of the pallet 21 are disposed on the fixed member 25. Under such circumstances, the pallet 21 to which the shaft member W is fixed is moved on the chain rollers 22 to convey the shaft member W, and is moved to the stopper cylinder 2.
4 is activated and its tip becomes pallet 21.
It is stopped by coming into contact with the end of the
Then, when the pallet 21 is stopped, the lifting cylinder 23 is activated and its tip pushes up the pallet 21 upwardly away from the chain roller 22, thereby lifting the pallet 2
The shaft member W fixed on the shaft member 1 assumes a snap spring assembly position as shown in FIG.

The snap ring supply unit 11 includes a rotary table 27 equipped with a plurality of magazines 26 in which snap rings R are stacked and stored, and a delivery cylinder 28 provided at the bottom of the rotary table 27. With the rotation of 27, one of the plurality of magazines 26 assumes a position corresponding to the tip of the delivery cylinder 28, and the delivery cylinder 28 is activated, and the lowermost snap ring R in the magazine 26 is moved. , is supplied to the supply end portion 30 via the guide rail 29 by an engagement pin 28a provided at the tip of the delivery cylinder 28. The supply end portion 30 is provided with snap ring holders 32a and 32b which are moved away from or close to each other in a direction perpendicular to the direction in which the guide rail 29 extends by cylinders 31a and 31b, respectively.

The ring transfer mounting mechanism 13 includes a main cylinder 33 located below the supply end 30 of the snap ring supply section 11, a sub cylinder 34 disposed in relation to the main cylinder 33, and a main cylinder 33 and the sub cylinder 34 disposed in relation to the main cylinder 33. A snap ring transfer section 35 is provided which is operated by both cylinders 34. The snap-ring transfer unit 35 is
Supply end 30 in the snap spring supply section 11
For example, as shown in FIG. 3, the main cylinder 33
A temporary receiving guide member 36 is connected to the temporary receiving guide member 36 and has a tapered portion 36a at its tip portion, a movable pressing member 38 is connected to the sub cylinder 34 via a connecting portion 37, and a temporary receiving guide member 36 extends in the same direction as the temporary receiving guide member 36. A tapered portion 40a is formed at the tip portion of the movable pressing member 3.
8 and an insertion guide member 40 urged upward by a spring member 39 disposed between the insertion guide member 8 and the insertion guide member 40 . Temporary receiving guide member 36 and insertion guide member 4
0 are coaxially combined to form the cylindrical portion 41 as a whole so that the cross-sectional arrangement is as shown in FIG. The temporary receiving guide member 36 has an outer diameter at a portion forming the columnar portion 41 that is slightly larger than an outer diameter at a portion forming the columnar portion 41 of the insertion guide member 40. The outer diameter of the temporary guide member 36 is selected to be slightly larger than the inner diameter of the snap ring R held by the snap ring holders 32a and 32b provided at the supply end 30 of the snap ring supply section 11. The movable pressing member 38 is configured to be slidably fitted into a cylindrical portion 41 formed by the temporary receiving guide member 36 and the insertion guide member 40, and is also provided on the insertion guide member 40. A slit 38a is formed to restrict the movement range of the stopper pin 40b, and the stopper pin 40b can slide within the range of the slit 38a.

When the main cylinder 33 is operated, only the temporary guide member 36 is moved up and down,
When the sub cylinder 34 is operated, if the movement of the insertion guide member 40 is not restricted, the movable pressing member 38 is raised and lowered together with the insertion guide member 40, and the insertion guide member 4
When the movement of 0 is restricted, only the movable pressing member 38 is moved up and down.

The ring mounting mechanism 12 includes a support arm portion 14 extending from the fixed support portion 14 toward the snap spring supply portion 11 side.
It is supported by a cylindrical member 43 provided on a carrier 42 movably supported by a, and protrudes downward from the carrier 42.
The carrier 42 moves along the support arm 14a between the position shown by the solid line and the position shown by the dashed-dotted line in FIG. The position directly above the upper end of the shaft member W which is moved and assumes the snap spring assembly position as shown by the solid line in FIG. 2, and the dashed line in FIG. As shown in FIG.

The cylindrical member 43 provided on the carrier 42 is
The carrier 42 is urged upward by a spring member 45, and its upper portion 43a is located below the main cylinder 46 attached to the fixed support portion 14, and the upper portion of the cylindrical member 43 The upper end surface of the main cylinder 43a faces the lower end surface of the cylinder rod with a slight gap when the main cylinder 46 is inactive. The carrier 42 is also provided with a rod member 48 that is biased upwardly against the carrier 42 by a spring member 47.
is connected to an elevating rod member 50 (FIG. 8) that passes through the center of the cylindrical member 43 via a connecting rod member 48a, and is also connected to the fixed support part 14 together with the main cylinder 46. It is located below the attached sub-cylinder 49, and its upper end face faces the lower end face of the cylinder rod with a slight gap when the sub-cylinder 49 is inactive.

Therefore, when the main cylinder 46 and the sub-cylinder 49 are both inactive, the carrier 42 is allowed to move along the support arm 14a, and when the main cylinder 46 is activated, the cylindrical member 43 is pushed down against the spring member 45, and the ring mounting mechanism 12 is pushed down accordingly.Furthermore, when the sub cylinder 49 is actuated, the rod member 48 is pushed down against the spring member 47, and the ring mounting mechanism 12 is pushed down accordingly. At the same time, the lifting rod member 50, which passes through the center of the cylindrical member 43, is pushed down.

The ring attachment mechanism 12 supported by the cylindrical member 43 is attached to the cylindrical member 4 as shown in FIG.
The fitting guide member 51 is inserted into the fitting guide member 3. This fitting guide member 51 has a slit 51a.
A stopper pin 52 is formed in the slit 51a and passes through the side wall of the cylindrical member 43.
The cylindrical member 43 is engaged with the spring member 53 disposed between the outer peripheral surface stepped portion and the inner peripheral surface stepped portion provided on the cylindrical member 43.
The lower end of the cylindrical member 43 is biased downwardly so that its lower end protrudes downward from the cylindrical member 43 during normal operation.
1a, it can rise relatively against the biasing force of the spring member 53. Further, the lower part of the fitting guide member 51 forms a thin cylindrical part, and the inner diameter thereof is equal to the outer diameter at the upper end part of the shaft member W and the ring transfer mounting mechanism 13.
The temporary receiving guide member 3 of the ring transfer mounting mechanism 13 is slightly larger than the outer diameter of the portion forming the columnar part 41 in the insertion guide member 40 of the ring transfer mounting mechanism 13.
The outer diameter of the portion forming the columnar portion 41 in No. 6 is slightly smaller than that of the portion forming the columnar portion 41.

Further, the ring transfer mounting mechanism 13 includes a first cylindrical press mounting member 54 disposed on the outer peripheral side of the cylindrical member 43, and a first cylindrical press mounting member 54.
A second cylindrical press mounting member 55 arranged on the outer peripheral side of the
It is equipped with The first cylindrical press mounting member 54 is
A stopper pin 56 is provided that passes through the side wall of the cylindrical member 43, and the stopper pin 56 engages with a recess 43b formed on the outer circumference of the cylindrical member 43. The cylindrical member 43 is biased downward by a spring member 57 disposed between the outer circumferential step provided in the fitting guide member 51 and the lower end of the cylindrical member 43 is placed above the lower end of the fitting guide member 51 during normal operation. The recess 43 is located at the cylindrical member 43.
It is assumed that it can rise relatively against the biasing force of the spring member 57 within the range b. The second cylindrical press mounting member 55 is provided with a stopper pin 58 that passes through its side wall, and the stopper pin 58 engages with a recess 54a formed in the outer circumference of the first cylindrical press mounting member 54. The first cylindrical pressure mounting member 54 is fixed by a spring member 59 disposed between the inner peripheral surface step and the outer peripheral step provided on the first cylindrical pressure mounting member 54.
, and in a normal state, its lower end is located above the lower end of the fitting guide member 51 and below the lower end of the first press mounting member 54 . 1 cylindrical press mounting member 5
4, it can rise relatively within the range of the recess 54a against the biasing force of the spring member 59.

A snap spring presence/absence detection section 60 is provided in relation to the first cylindrical pressure mounting member 54, and a snap spring outer diameter abnormality detection section 61 is provided in relation to the second cylindrical pressure mounting member 55. There is. The snap-ring presence/absence detection section 60 includes, for example, an optical switch section 62 fixed to the cylindrical member 43 and a plate-like member 63 having a through hole 63a attached to the upper part of the first cylindrical press mounting member 54. The light switch section 62 has a through hole 63a provided in the plate member 63.
Similarly, the snap ring outer diameter abnormality detection section 61 detects the state in which the snap ring is placed in the position corresponding to 2 and sends out a detection signal. and a plate member 65 having a through hole 65a attached to the upper part of the second cylindrical press mounting member 55, and the light switch part 64 is provided in the plate member 65. The through hole 65a is the light switch part 6
3 and sends out a detection signal.

Note that the lifting cylinder 23 and stopper cylinder 24 in the shaft member support mechanism 10, the delivery cylinder 28 and cylinders 31a and 31b in the snap ring supply section 11, and the ring transfer mounting mechanism 1
3, the main cylinder 33 and the sub cylinder 34,
A delivery cylinder 44 that moves the carrier 42, a main cylinder 46 that pushes down the cylindrical member 43, and a sub cylinder 49 that pushes down the rod member 48.
The operation of each of these is controlled by a control unit 15.

Based on the above-described configuration, the snap spring R is automatically assembled to the shaft member W. At that time, the shaft member W fixed on the pallet 21 is assembled automatically.
As shown in FIG. 2, one end thereof is turned upward to assume the snap spring assembly position, and the delivery cylinder 44 is operated to move the carrier 42 to the second position. The ring attachment mechanism 12 is moved to the position shown by the dash-dotted line in the figure, so that the ring attachment mechanism 12 is positioned directly above the supply end 30 of the snap ring supply section 11, as shown by the dash-dotted line in FIG. be done.

Then, the snap ring supply section 11 supplies the snap spring R to the supply end section 30,
The snap spring R supplied to the supply end 30 is
As shown in FIG. 3, the feed end 30 is held by snap-ring retainers 32a and 32b. As a result, the snap ring R held by the snap ring holders 32a and 32b is positioned directly above the snap ring transfer section 35 in the ring transfer mounting mechanism 13 and directly below the ring mounting mechanism 12. .

Under such circumstances, the main cylinder 33 in the ring transfer mounting mechanism 13 is activated, and as shown in FIG. The taper part 36a is inserted into the snap ring R held by the snap ring holders 32a and 32b, and the inner diameter of the snap ring R is slightly expanded, so that the snap ring R is fitted into the formed portion of the columnar part 41. be done. Then, the tapered portion 36a at the tip of the temporary receiving guide member 36 is engaged with the lower end portion of the fitting guide member 51 in the ring mounting mechanism 12.

Subsequently, the cylinders 31a and 31 provided at the supply end 30 of the snap spring supply section 11
b are actuated synchronously, as shown in FIG.
is separated from the snap spring R fitted to the temporary receiving guide member 36. Then, the sub cylinder 34 in the ring transfer mounting mechanism 13 is activated, and the movable pressing member 38 and the insertion guide member 40 are raised.
The distal end portion 40d of the insertion guide member 40 is inserted into the fitting guide member 51 of the ring mounting mechanism 12 through the snap ring R fitted to the temporary receiving guide member 36, and the insertion guide member 40 is inserted into the step portion 40c provided therein. comes into contact with the lower end of the fitting guide member 51 and stops rising. The outer diameter of the portion of the insertion guide member 40 below the stepped portion 40c is approximately equal to the outer diameter of the fitting guide member 51.

After the insertion guide member 40 is restricted from rising, the sub cylinder 34 in the ring transfer mounting mechanism 13 is further actuated, and the movable pressing member 38 independently pushes the spring member 3 as shown in FIG.
The snap ring R, which has risen against the urging force of 9 and fitted into the temporary receiving guide member 36 at its tip, is pressed upward and fitted onto the outer periphery of the fitting guide member 51 in the ring mounting mechanism 12. let As a result, the transfer and mounting of the snap ring R supplied from the snap ring supply unit 11 to the fitting guide member 51 in the ring mounting mechanism 12 by the ring transfer mounting mechanism 13 is completed, and the main cylinder 33 and the sub cylinder 34 are in the non-operating state. As a result, the temporary receiving guide member 36, the insertion guide member 40, and the movable pressing member 38 are lowered to their original positions.

When the snap ring R is attached to the fitting guide member 51 in the ring attachment mechanism 12 as described above, the delivery cylinder 44 is activated and the carrier 42 is moved to the position shown by the solid line in FIG. As a result, the ring mounting mechanism 12 assumes the snap spring assembly position as shown by the solid line in FIG. 2, and is placed directly above the shaft member W, and as shown in FIG. The fitting guide member 51 to which R is attached has its lower end facing the upper end of the shaft member W. A hub H is fitted into the shaft member W, and the shaft member W of the hub H
An annular groove G is formed in which the snap spring R is to be engaged in order to regulate its position. Further, the shaft member W has an outer peripheral surface stepped portion Wa formed above the annular groove portion G, and further has a conical recessed portion Wr formed on its upper end surface.

Under such circumstances, the first cylindrical press mounting member 54 in the ring mounting mechanism 12 is pushed against the urging force of the spring member 57 from its lower end by the snap spring R mounted on the fitting guide member 51. The plate-like member 6 is pushed up and is thereby attached to the upper part of the first cylindrical press mounting member 54.
3 is also pushed up, and the through hole 63a provided in the plate member 63 is placed in a position corresponding to the optical switch section 62, and the snap spring presence/absence detection section 60 sends out a detection signal indicating the presence of the snap spring R. do. Such a detection signal is transmitted to the control unit 1.
5.

As a result, the main cylinder 46 and the sub cylinder 49 attached to the fixed support part 14 are actuated, and the main cylinder 46 causes the cylindrical member 4 to
3 is pushed down against the biasing force of the spring member 45, and the rod member 48 is pushed down by the sub cylinder 49 against the biasing force of the spring member 47. Accordingly, as shown in FIG. 10, the ring mounting mechanism 12 is also pushed down, and the fitting guide member 51 fits into the shaft member W at its upper end, and its lower end is formed into the shaft member W. The elevating rod member 50, which penetrates the cylindrical member 43, is pushed down so that its tip 50a becomes a conical recess formed in the upper end surface of the shaft member W. It is brought into engagement with Wr.
Then, by further pushing down the ring mounting mechanism 12, the first cylindrical press mounting member 54 is further lowered with respect to the fitting guide member 51, and the lower end portion of the first cylindrical press mounting member 54 is attached to the snap spring fitted to the fitting guide member 51. After pressing R downward and transferring it from the fitting guide member 51 to the shaft member W,
It is engaged with the annular groove G formed in the shaft member W (FIG. 11).

In this way, the ring attachment mechanism 12
The operation of moving the snap ring R fitted into the fitting guide member 51 to the shaft member W and engaging it with the annular groove G formed therein is completed;
Thereafter, the main cylinder 46 and the sub cylinder 49 are brought into a non-operating state, whereby the cylindrical member 43 is raised by the biasing force of the spring member 45 and the rod member 48 is raised by the biasing force of the spring member 47. Accordingly, the ring mounting mechanism 12 and the lifting rod member 50 are also raised and returned to their original positions. Then, as shown in FIG. 11, a shaft member W having the snap ring R assembled in the annular groove G is obtained.

In addition, by the ring transfer mounting mechanism 13, the fitting guide member 51 in the ring mounting mechanism 12,
When a snap ring R' having an outer diameter larger than a predetermined outer diameter is fitted, as shown in FIG. 1
A second cylindrical pressure mounting member 55 is pushed up from its lower end together with the first cylindrical pressure mounting member 54 in No. 2 against the biasing force of a spring member 59, whereby the second cylindrical pressure mounting member 54 The plate-like member 65 attached to the upper part of the mounting member 55 is also pushed up, and the through-hole 65a provided in the plate-like member 65 is placed in a position corresponding to the light switch part 64, causing an abnormality in the snap spring outer diameter. Detection section 61
sends out a detection signal indicating that a snap spring R' whose outer diameter is larger than a predetermined size is attached. Such a detection signal is supplied as an abnormality occurrence signal to the control unit 15, and upon receiving such an abnormality occurrence signal, the control unit 15, for example, stops the subsequent operation of each section.

(Effect of the invention) As is clear from the above explanation, the snap spring assembly device according to the present invention allows the snap spring to be attached to the groove of a shaft-like or cylindrical member such as a shaft member into which a hub or a gear is fitted. A relatively simple method comprising a ring transfer attachment mechanism and a ring attachment mechanism, each including a movable member into which the snap spring supplied by the snap spring supply unit is temporarily fitted in order to automatically engage the snap spring. Under the combination of mechanisms, the snap spring is once fitted into the fitting guide member of the ring mounting mechanism, and when the fitting guide member is fitted to one end side of the shaft-shaped or cylindrical member. , into the groove of the shaft-like or cylindrical member, it is possible to ensure that the snap ring is properly engaged with the groove of the shaft-like or cylindrical member.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view of an example of the snap ring assembly device according to the present invention, and FIG. 3 is a main part of the ring transfer attachment mechanism in the example shown in FIGS. 1 and 2. A cross-sectional view showing the configuration, Figure 4 is a cross-sectional view taken along the - line in Figure 3, Figures 5 and 6.
7, 9, 10, and 12 are diagrams used to explain the operation of the example shown in FIGS. 1 and 2, and FIG. FIG. 11 is a cross-sectional view showing an example of a shaft member to which a snap spring is assembled according to the example shown in FIGS. 1 and 2. FIG. . In the figure, 10 is a shaft member support mechanism, 11 is a snap ring supply section, 12 is a ring attachment mechanism, 13 is a ring transfer attachment mechanism, 14 is a fixed support section, 15 is a control unit, 36 is a temporary guide member, and 38 is a movable A pressing member, 40 is an insertion guide member, 41 is a cylindrical part, 51 is a fitting guide member, 54 is a first cylindrical press mounting member, 55 is a second cylindrical press mounting member, R
, R' is a snap spring, W is a shaft member, and G is an annular groove.

Claims (1)

[Claims for Utility Model Registration] A support mechanism that supports a shaft-like or cylindrical member provided with a groove with which a snap spring is to be engaged, with one end thereof facing in a predetermined direction; and a snap spring supply that supplies the snap spring. and a snap ring having a tapered tip portion formed therein and supplied by the snap ring supplying portion is fitted, and the inner diameter of the snap ring is larger than the outer diameter of one end of the shaft-like or cylindrical member. A temporary receiving guide member that has an inner diameter and is expanded to be larger than the outer diameter of a fitting guide member that is fitted to one end of the shaft-shaped or cylindrical member, and a distal end portion of the temporary receiving guide member. and an insertion guide member having a distal end portion that protrudes from the fitting guide member and is inserted into the fitting guide member, and the insertion guide member is coaxially combined to form a cylindrical part as a whole, and the circular The snap ring is movably fitted into the columnar part, and when the tip of the insertion guide member is inserted into the fitting guide member, one end part presses and moves the snap ring fitted into the temporary receiving guide member. a ring transfer attachment mechanism provided with a movable pressing member that fits onto the outer periphery of the fitting guide member; and is slidably arranged on the outer peripheral side of the fitting guide member,
With the fitting guide member fitted to one end side of the shaft-shaped or cylindrical member, the snap ring fitted to the fitting guide member is pressed and moved to close the shaft-shaped or cylindrical member. A snap spring assembly device comprising: a ring mounting mechanism having a press mounting member that is engaged with a groove portion of the ring;