JP2544164B2 - Piston ring assembly device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a piston ring assembling device for incorporating a piston ring into a piston of an automobile engine or the like.

[Conventional technology]

As the above-mentioned piston ring assembling device, a work transfer body provided with a piston holding mechanism capable of moving vertically is provided movably in the horizontal two-dimensional direction, and an automatic control mechanism for moving the piston holding mechanism in the three-dimensional direction is provided. ,
By automatic movement control of the piston holding mechanism in the three-dimensional direction, for example, the piston on the pallet is carried into the piston ring fitting device, and the piston ring is fitted into the ring groove of the carrying-in piston by the piston ring fitting device. In some cases, the piston fitted with the piston ring is carried out onto the pallet.

And, the piston ring fitting device is equipped with a magazine loaded with a large number of piston rings,
When the piston ring is used up, the empty magazine is replaced with a ring-loaded magazine loaded with a large number of piston rings.

[Problems to be solved by the invention]

By the way, not only the magazine in which a large number of piston rings are loaded but also the empty magazine has a considerable weight, and conventionally, the empty magazine and the ring-loaded magazine have been artificially replaced. However, this method requires a great deal of manpower and is dangerous and wins. In addition, it requires a considerable amount of time to replace the magazine, and there is room for improvement in that it leads to a reduction in the piston ring fitting efficiency.

The present invention has been devised in view of the above circumstances, and by effectively utilizing the piston ring assembling device itself, it is possible to automatically perform magazine replacement at low cost. Has an aim.

[Means for solving problems]

In order to achieve the above object, the present invention provides a work transfer body having a vertically movable piston holding device movably in a horizontal two-dimensional direction, and automatically moving the piston holding mechanism in a three-dimensional direction. A piston ring assembling device having a control mechanism configured to carry out and carry out the piston to and from the piston ring fitting device by automatically controlling the three-dimensional movement of the piston holding mechanism. A free magazine holding mechanism is provided, and an automatic control mechanism for moving the magazine holding mechanism in a three-dimensional direction is provided, and the empty magazine from the piston ring fitting device is controlled by the three-dimensional automatic movement control of the magazine holding mechanism. To load and unload the ring loading magazine loaded with piston rings. It is characterized in the point.

[Action]

That is, by utilizing a work transfer body that moves in the horizontal two-dimensional direction and its drive system, the work transfer body is equipped with a magazine holding mechanism that can move in the vertical direction, and the magazine holding mechanism is mounted in the three-dimensional direction. With the addition of an automatic control mechanism for moving the empty magazine, the empty magazine and the piston ring loaded magazine are automatically replaced.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show a piston ring assembling device, and FIG. 4 shows a work transfer body A and a piston ring fitting device B ₁ (B ₂ ).

The piston ring assembly device is configured as follows. That is, two piston ring fitting devices B ₁ and B ₂
Stands 2 and 2 are erected on both sides of the base 1 where the
Attach a pair of cylindrical and channel-shaped guide rails 3 and 4 that are parallel to each other on the upper part of 2, 2 and both guide rails.
A saddle 5 is provided so as to be reciprocally movable in the horizontal first direction X over 3, 4, and the work transfer body A is reciprocally movable in the horizontal second direction Y orthogonal to the moving direction of the saddle 5 on the saddle 5.
By attaching the work transfer body A to the horizontal two-dimensional direction X,
A piston clamping mechanism 6 configured to be movable in Y and capable of switching between two states of piston clamping and clamping release is provided reciprocally in the up-down direction (vertical third direction Z) with respect to the work transfer body A. Consists of

Specifically, one end of the saddle 5 is supported by the channel-shaped guide rail 4 via a roller 7, and the other end of the saddle 5 is straddled by the tubular guide rail 3 and, for example, The screw shaft 8 connected to the AC servo motor M ₂ is provided inside the cylindrical guide rail 3 and
A ball female screw 9 screwed to the screw shaft 8 is attached to the saddle 5, and the saddle 5 is reciprocally movable in the horizontal first direction X by the forward / reverse control of the motor M ₂ .

Inside the saddle 5, for example, a screw shaft 10 connected to the AC servo motor M ₃ is provided, and the screw shaft 10 is provided.
A ball female screw 11 screwed to 10 is attached to the work transfer body A, and the work transfer body A can be reciprocally moved in the second horizontal direction Y by the forward / reverse control of the motor M ₃ .

In addition, inside the work transfer body A, for example, a ball female screw 12 interlockingly connected to the AC servomotor M ₄ is provided, and
The piston holding mechanism 6 is attached to the screw shaft 13 screwed to the pole female screw 12, and the piston holding mechanism 6 is reciprocally movable in the vertical direction, that is, the vertical third direction Z by the forward / reverse control of the motor M _4. .

On the other hand, the pistol holding mechanism 6 is controlled to move in the vertical third direction Z, and the work transfer body A is moved in the horizontal two-dimensional directions X and Y.
The automatic control mechanism (see FIG. 6) D for controlling the movement of the piston clamping mechanism 6 and switching the piston clamping mechanism 6 to the two states is provided, and the piston clamping mechanism by the automatic control mechanism is provided. By the automatic control of the movement of 6 in the three-dimensional directions X, Y, Z and the switching of the piston clamping mechanism 6 between the two states, the piston 14 on the pallet 15 brought to the one side of the piston ring assembling device is moved to the first piston. It is carried into the ring fitting device B ₁ , then the above-mentioned piston 14 fitted with the first piston ring a is transferred to the adjacent second piston ring fitting device B ₂ , and the second piston ring b is The fitted piston 14 is carried out from the second piston ring fitting device B ₂ to the pallet 15.

The piston ring fitting devices B ₁ and B ₂ have the same structure, and as shown in FIG. 4, they are switched between a locked state and an unlocked state as the taper pin 16 is moved up and down by the cylinder 33. Magazine locking mechanism 17 and ring loading magazine mounted on the magazine locking mechanism 17
It is composed of a ring push-up claw 18 that pushes up the piston rings a and (b) of M ₁ one by one.

An empty magazine M ₀ when the piston rings a, (b) are used up by the piston ring fitting devices B ₁ , B ₂
Take-out parts 19a, 19b and a large number of piston rings a,
Stock part of ring loading magazine M ₁ loaded with (b)
20a, 20b and take-out conveyors 36, 36 for the empty magazine M ₀
And the carry-in conveyors 37, 37 of the ring loading magazine M ₁ are arranged on the side opposite to the carry-in / out part 21 of the pallet 15, and the take-out part 1 from the piston ring fitting devices B ₁ , B ₂
Carrying out empty magazine M ₀ to 9a, 19b, and stock 20a, 20
In order to carry the ring-loaded magazine M ₁ into the piston ring fitting devices B ₁ and B ₂ from b, a magazine holding mechanism C is detachably provided on the work transfer body A.

That is, as shown in FIG. 5, connecting bodies 22 and 23 are provided on the upper and lower sides of the work transfer body A, and an engaging body 24 in the shape of an inverted V groove which can be engaged with and disengaged from the upper connecting body 22 is attached to a frame body 25. It is connected and
A pin-shaped engagement body 26 that can be engaged with and disengaged from the lower coupling body 23 is attached to the cylinder 27.
A lift cylinder 29, whose axial center is directed in the vertical third direction Z, is attached to the lower flange 28 of the frame body 25 while the lift cylinder 29 is provided on the frame body 25 through the flange.
A magazine holding mechanism C is provided at the lower end portion of the cylinder rod 29a so as to penetrate the cylinder rod 28a, and thus the work transfer body A is moved to move the upper connecting body 22 to the upper engaging body 24 of the frame body 25.
, The lift cylinder 29 is substantially contracted by bleeding air to engage the upper engagement body 24 with the upper coupling body 22, and the cylinder 27 is extended to cause the pin engagement body 26 to move. Lower part of work transfer body A
By engaging with 23, the magazine holding mechanism C can be connected to the work transfer body A via the frame body 25, and the connection of the magazine holding mechanism C to the work transfer body A can be released by the reverse operation. It is composed of.

The magazine holding mechanism C is constructed as shown in FIGS. That is, the tapered shaft body 30 having a skirt extending is continuously provided to the cylinder rod 29a, and the tubular member 3
1 is fitted to the tapered shaft body 30 and the tubular member 3
Cylinder 3 by sliding 1 relative to the tapered shaft body 30
2 is attached to the cylinder rod 29a, a hole c is formed in the cylindrical member 31 at a portion corresponding to the tapered surface portion S, and the ball d is held in the hole c in a state where the ball d is prevented from coming out. On the other hand, on the inner surface side of the magazine, a taper concave portion S ₁ narrowing upward is formed.

Thus, the magazine holding mechanism C is connected to the empty magazine M _0.
Alternatively, in order to connect to the ring-loaded magazine M ₁ , as described above, the magazine holding mechanism C is connected to the work transfer body A via the frame 25, and then the lift cylinder 29 is slightly contracted to the above-mentioned condition. The magazine holding mechanism C is set to the standing posture holding unit 34.
And the work transfer body A is moved so that the vertical axis of the magazine holding mechanism C is aligned with the axis of the empty magazine M ₀ or the ring loading magazine M ₁ , and the lift cylinder 29 is moved to the stroke end. And the taper surface portion S of the tubular member 31 is positioned corresponding to the taper recess S ₁ on the inner surface of the magazine, and the tubular member 31 is lowered to bring the ball d along the taper surface portion S. The ball d is projected from the hole c, and the ball d is locked in the upper narrowed taper recess S ₁ on the inner surface side of the magazine. By locking the ball d, the empty magazine M ₀ or the ring loading magazine M for the magazine holding mechanism C is locked. ₁
A connection of is achieved.

The connection and disconnection of the frame 25 to the work transfer body A, and the unloading of the empty magazine M ₀ from the piston ring fitting devices B ₁ and B ₂ to the magazine removal units 19a and 19b and the stock unit 20a. The loading of the ring loading magazine M ₁ stocked in 20b, 20b into the piston ring fitting device B ₁ , B ₂ is configured to be performed by an automatic control mechanism E (see FIG. 6) such as a program. .

A specific example of the automatic control will be described. As shown mainly in FIGS. 9 and 10, the last piston ring a of the first piston ring fitting device B ₁ is, for example, the fifth piston 14. When the state is detected as being fitted, the fifth piston 14 is carried out to the pallet 15, and then the work transfer body A advances in the horizontal first direction X (upward in FIG. 7). Yes, after that, based on this, backward, leftward movement,
Called rightward. ), And at the same time, it moves to the left in the horizontal second direction Y, and the upper connecting body 22 of the work transfer body A goes under the upper engaging body 24 of the frame body 25.

Next, the upper connecting body 22 and the upper engaging body 24 are engaged and connected by bleeding the lift cylinder 29, and the lower connecting body 23 and the pin fitting body 26 are fitted and connected by extending the cylinder 27. Then, the lift cylinder 29 is contracted, so that the magazine holding mechanism C is pulled out from the holding portion 34.

Next, the work transfer body A moves backward and rightward in the horizontal two-dimensional directions X and Y, and stops when the axis of the magazine holding mechanism C coincides with the axis of the empty magazine M ₀ .

Here, the lift cylinder 29 extends to the stroke end, and the magazine holding mechanism C descends in the vertical third direction Z.

After that, the cylinder 32 extends and the empty magazine M ₀ is connected to the magazine holding mechanism C.

Then, the cylinder 33 is operated to switch the magazine lock mechanism 17 to the unlocked state, and the shift cylinder 29 is contracted to suspend and hold the empty magazine M ₀ by the magazine holding mechanism C.

In this state, the work transfer body A moves in the horizontal two-dimensional direction X,
Proceed forward to Y to the right, and carry out the empty magazine M ₀ to the take-out section 19a.

Here, the lift cylinder 29 extends and the magazine holding mechanism C descends in the vertical third direction Z, and the cylinder 32 contracts so that the empty magazine M ₀ is taken out onto the pellet 35 of the take-out portion 19a.

Next, the magazine holding mechanism C is moved to the vertical third direction Z.
, The work transfer body A moves to the left, the magazine holding mechanism C lowers in the vertical third direction Z, the cylinder 32 extends, and the ring-loaded magazine M ₁ is connected to the magazine holding mechanism C. The holding mechanism C moves up in the vertical third direction Z, and the ring loading magazine M ₁ is suspended and held in the magazine holding mechanism C.

Then, the work transfer body A moves in the horizontal two-dimensional directions X, Y.
The ring loading magazine M ₁ is carried into the first piston ring fitting device B ₁ , the magazine holding mechanism C descends in the vertical third direction Z, and the cylinder 33 is operated to load the ring. The magazine M ₁ is locked to the first piston ring fitting device B ₁ , the coupling of the ring loading magazine M ₁ by the cylinder 32 to the magazine holding mechanism C is released, the magazine holding mechanism C is raised, and the work transfer body is moved. A moves forward leftward in the horizontal two-dimensional directions X and Y to move the magazine holding mechanism C to the original holding section 34.

Here, the engagement and connection of the pin engagement body 26 by the cylinder 27 is released, and the lift cylinder 29 extends to lower the magazine holding mechanism C, and the magazine holding mechanism C is moved during the lowering. Since it is supported by the holding portion 34, the frame body 25 is relatively lifted by using the holding portion 34 as a reaction force point, whereby the connection of the upper engagement body 24 of the frame body 25 to the work transfer body A is released. It

With the above, the unloading of the empty magazine M ₀ from the first piston ring fitting device B ₁ and the loading of the ring loading magazine M ₁ into the first piston ring fitting device B ₁ are completed. The transfer body A moves backward in the horizontal two-dimensional directions X and Y to prepare for the next nip of the sixth piston 14, and after that, the piston is controlled by the automatic control mechanism C.
The fitting control of the first and second piston rings a and b with respect to 14 is performed.

Incidentally, the unloading of the empty magazine M ₀ and the loading of the ring loading magazine M _{1 to} the second piston ring fitting device B ₂ are carried out in the same manner, and the first and second piston ring fitting devices B are also carried out. _When the piston rings a and b of ₁ and B ₂ are used up at the same time, for example, after the loading of the ring loading magazine M ₁ to the above-described first piston ring fitting device B ₁ , the second piston ring fitting device B ₁ is loaded. The empty magazine M ₀ is unloaded from the _second magazine ₂ and then the ring loading magazine M ₁ loaded with the piston ring b is loaded into the second piston ring fitting device B ₂ ; that is, the automatic control mechanism is used. The control form of E can be variously modified.

Further, in the embodiment, the magazine holding mechanism C is detachably provided on the work transfer body A via the frame 25, but the magazine holding mechanism C is directly connected to the work transfer body A. Is also good.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention provides a work transfer body that is movable in a horizontal two-dimensional direction of a piston ring assembly device,
It is characterized by the fact that it is equipped with a magazine-holding mechanism that can move in the vertical direction and that an automatic control mechanism that moves the magazine-holding mechanism in three-dimensional directions is added. By effectively utilizing the work transfer body provided and its drive system, it is possible to automatically and safely replace the empty magazine and the piston ring loading magazine with respect to the piston ring fitting device automatically and safely. As a result, the piston ring fitting efficiency can be improved.

[Brief description of drawings]

1 is a schematic plan view of a piston ring assembly device, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, FIG. 4 is an explanatory view of a work transfer body and a piston ring fitting device, and FIG. FIG. 6 is a block diagram for explaining connection of a magazine to the magazine holding mechanism, FIG. 6 is a block diagram, FIGS. 7 and 8 are detailed views of the magazine holding mechanism, FIG. 9 is an explanatory diagram of magazine replacement, and FIG. FIG. 6 ... Piston clamping mechanism, A ... Work transfer body, B ₁ , B ₂
…… Piston ring fitting device, C …… Magazine holding mechanism, D, E …… Automatic control mechanism, M ₀ …… Empty magazine, M ₁ ……
Ring loading magazine.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhisa Tanaka, 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor, Tetsuhiko Nomura 1, Toyota Town, Aichi Prefecture, Toyota Motor Co., Ltd. ( 72) Inventor Masafumi Yamaguchi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (56) Reference JP-A-62-148127 (JP, A)

Claims (2)

(57) [Claims] 1. A work transfer body having a vertically movable piston clamping mechanism is provided so as to be movable in the horizontal two-dimensional direction, and an automatic control mechanism for moving the piston clamping mechanism in the vertical direction and the two-dimensional horizontal direction is provided. In a piston ring assembling device configured to carry a piston in and out of a piston link fitting device by controlling movement of the piston clamping mechanism in a three-dimensional direction, a magazine clamping mechanism that is vertically movable to the work transfer body. With the provision of a control mechanism for moving the magazine holding mechanism in the vertical and horizontal two-dimensional directions, and by carrying out the movement control of the magazine holding mechanism in the three-dimensional direction, carrying out the empty magazine from the piston ring fitting device and It is designed so that the ring device magazine loaded with piston rings can be carried in. Piston ring assembly and wherein that you have. 2. A piston ring assembling apparatus according to claim 1, wherein a frame body, which is provided with the magazine holding mechanism so as to be movable up and down, is detachably attached to the work transfer body.