JP3120458B2 - Ring insertion machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint, for example, in which a C-shaped ring for retaining is inserted into the inner periphery of a directly-coupled nut (cap nut) which is rotatably and slidably fixedly mounted on a union socket of a joint body. To a series of devices for doing so.

[0002]

2. Description of the Related Art According to an example of a ball valve with an expansion joint shown in FIG. 3, a C-shaped ring fitted inside a ring groove of a direct-coupled nut or the like for the above-described purpose is provided on one side of a valve body (a). A union (b) is provided in the main body, which can enter and exit for a predetermined length, and a ring groove (d) is provided around the inner periphery of a directly-coupled nut (c) fitted to the tip end of the union. By inserting a C-shaped ring (e) into the ring groove (d) with the direct-coupled nut (c) fitted in), the direct-coupled nut can rotate and move back and forth by a fixed amount with respect to the union. Moreover, it is configured so as not to come off.

[0003]

However, the ring groove (d) of the directly-coupled nut (c) previously fitted to the union (b)
All the work of inserting the C-type ring (e) into the inside has been performed manually, but the workability is poor because the ring groove (d) of the direct-coupled nut faces the small diameter portion (f). Therefore, it takes a considerable amount of time to insert the C-shaped ring (e) even by a worker having considerable skill, which is not only inefficient, but also requires a fingertip. There has been a problem in that continuous work cannot be performed for a long period of time, which results in high costs.

[0004]

In view of the circumstances described above SUMMARY OF THE INVENTION The present invention is by performing a mechanical said C-shaped ring insertion operation, be one obtained by solving the conventional problems, the workpiece inner wall
Ring insertion to insert a C-shaped ring into the engraved ring groove
Holds the workpiece and is almost coaxial with the ring groove
A rotating jig to rotate and a jig rod with a push nail at the tip
The pressing claw is provided along the rotation radial direction of the rotating jig substantially.
The front movement mechanism for reciprocating
And the tip metal fitting is substantially moved with respect to the rotation axis of the rotary jig.
With a lowering mechanism to reciprocate in parallel, and press the claw with a C-shaped ring
Pressing position against one end of the unit and retracting away from the rotating jig
The above-mentioned rotary jig and moving mechanism to move between
And the lowering mechanism is controlled.

[0005]

[Action] device of the present invention having the above structure, the workpiece rotation jig, one end sets C-shaped ring in a state of being inserted into the ring groove of the workpiece, the control is started, and the pressing position
The push rod of the jig rod, which has been adjusted in advance so as to be in the retracted position, moves forward from the retracted position toward the rotating jig by a fixed amount, and is lowered to the pressed position. Ru strongly pressed against the groove. In this state, the rotating jig rotates
When rotated, the remaining portion of the C-shaped ring rotates with the work in a state of being pressed against the peripheral wall of the work body by its own elasticity. Therefore, the C-shaped ring can be reliably inserted into the ring groove of the work while the rotating jig makes one rotation.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in further detail with reference to one embodiment shown in the drawings. In FIG.
2 is a plate provided on the top plate 1a of the machine at a constant interval, 3 is a rotary jig provided on one side of the plate 2, and its main shaft 3a is a bearing case. Radial bearing 3d built in 3b ・ 3c
-It penetrates through the top plate 1a and the plate 2 via 3e or the like and is connected to a motor (M) installed below the machine base 1.

Reference numeral 4 denotes a lower movement mechanism of a jig rod 8 having a tip metal fitting 4a at an upper portion, which is provided on a plate 2 at a position close to the rotary jig through a cylinder shaft 4c penetrating the plate. Fixed amount (10
(Up to 20 mm).

Further, 5 is a support plate (S) on the other side of the plate 2.
A forward movement mechanism of a jig rod 8 in which a piston rod 5a of a cylinder 5b horizontally supported by a cylinder reciprocates back and forth by a predetermined amount, 6 is a flexible joint fixed to the tip of the piston rod 5a, and 7 is flexible A jig joint 8 which is connected to the joint 6 and has a set screw 7a at the tip is fixed so that the effective length can be adjusted via the jig joint 7 and a ring press fit formed by bending a push claw 8a at the tip. Jig rod, the middle part of which is slidably supported through a through-hole 4f of the tip metal fitting 4a of the lowering mechanism 4. Thus, the rotating jig 3 and the main shaft 3a are
As illustrated in FIG. 1, the lower plate 3h is connected by the key 3f and the height can be adjusted by the screw 3g, and the square recess 3 is formed on the upper surface.
The upper plate 3j provided with the upper plate 3i is exchangeably integrally connected with a long bolt 3k, and a boss 3l having a convex portion is formed at the lower bottom of the square concave wall 3i of the upper plate. It is.

The cylinder shaft 4c is provided with a double nut 4d which abuts against the upper surface of the plate 2 and regulates the amount of elevation of the plate 2. In addition, a tip screwed on the tip to adjust the height of the tip fitting 4a. The holding nut 4e is attached in contact with the lower edge of the metal fitting 4a.

Next, the operation and operation of the apparatus of the present invention having the above-described structure will be described with respect to a ball valve with an expansion joint having the structure shown in FIG. B) From the distal end side of the unit, first, while slightly expanding the C-shaped ring (e), insert the small diameter portion (f), and then fit a direct connection nut (c) to the union distal end side. A direct connection nut (c) is fitted to the angular recessed wall 3i of the upper plate of the rotary jig 3 on which the upper plate 3j and the boss 3l which are selected in advance according to the diameter of the union or the like are fitted. The union (b) is fitted so that the opening of the union (b) faces downward with respect to 3l, so that the ring groove (d) of the direct connection nut (c) faces the small diameter portion (f) of the union. (See FIG. 2). In the figure, (g) denotes a cap nut for connecting the valve body of the union (b), and 9 denotes a stopper rod for preventing the cap nut (g) from lowering.

Next, while adjusting the height and the descending amount of the tip metal fitting 4a screwed to the tip of the cylinder shaft 4c, the C-shaped ring (e) is inserted into the ring groove (d) of the directly connected nut (c). ), The set screw 7a of the jig joint 6 is loosened and the pressing claw 8a at the tip of the jig rod 8 is loosened.
Is adjusted and fixed so as to be located on one end of the C-shaped ring. This position allows the push claw 8a to be in the C-shaped ring (e).
This is the pressing position where the pressing is performed. In contrast, FIG.
The reason is that the pushing claw 8a is away from the C-shaped ring (e).
It is an escape position.

When the above adjustment work is completed, when the power is turned on and the apparatus is driven, the piston rod 5a extends for a predetermined length, and then the cylinder shaft 4c of the tip metal fitting 4a descends to pull down the push claw 8a and push the push claw 8a. The claw 8a moves from the retracted position
Move to the pressing position and further push one end of the C-shaped ring into the ring groove (d). At this point, the motor (M) starts,
The work and the like set on the boss 3l of the rotary jig 3 are rotated by one full rotation through the main shaft 3a and stopped, and during this time, the C-shaped ring (e) is securely in the ring groove (d) of the directly-coupled nut. It is inserted into.

When the insertion of the C-shaped ring is completed in this way, the cylinder shaft 4c raises its tip metal fitting 4a to its original position, and at the same time, the piston rod 5a contracts to move the jig rod 8 backward. To the original position (evacuated position) .

The linking operation of these members is controlled by a timer and a sequencer.

[0015]

As is clear from the above description, according to the present ring inserting machine, the work and the C-shaped ring are set on the rotating jig and the control is started to insert the C-shaped ring. Can be performed automatically and quickly, so that it does not require a high level of skill as in the conventional manual work, is highly efficient, and has the special effect that a significant reduction in the cost of this kind of ring insertion work can be expected. Have.

[Brief description of the drawings]

FIG. 1 is a front view showing an apparatus of the present invention;

FIG. 2 is a partially enlarged cross-sectional view showing a state in which a work is set on a rotary jig, with a part cut away.

FIG. 3 is a partially cutaway sectional view of a ball valve provided with an expansion unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine stand 2 Plate 3 Rotating jig 4 Lowering mechanism 5 Forward moving mechanism 6 Flexible joint 7 Jig joint 8 Jig rod

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Matsui 2-1-156 Urashinami, Hirano-ku, Osaka-shi Inside Tabuchi Manufacturing Co., Ltd. (72) Masaaki Watanabe 2-1-156 Uriwaminami, Hirano-ku, Osaka-shi No. Tabuchi Manufacturing Co., Ltd. (56) References Japanese Utility Model 2-63928 (JP, U) Japanese Utility Model 54-106578 (JP, U) Japanese Utility Model Utility Model 61-151835 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) B23P 19/00-21/00

Claims (1)

(57) [Claims] 1. A C-shaped rib is formed in a ring groove formed in an inner wall of a work.
A ring insertion machine that inserts a ring
Rotating jig that rotates almost coaxially with the ring groove
A jig rod is formed by bending the push nail.
A forward movement mechanism that reciprocates almost along the radius of rotation, and a jig
A tip fitting that is linked to the rod;
And a lowering mechanism that reciprocates almost parallel to the rotation axis of the tool.
And a pressing position where the pressing claw is pressed against one end of the C-shaped ring.
So that it can be moved between the retreat position away from the rotating jig
To control the above rotary jig, forward moving mechanism and lower moving mechanism
A ring insertion machine characterized by comprising.