JPS61185368A - Piston washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention: a. Industrial Application Field The present invention relates to a piston cleaning device for removing chips, dust, etc. that adhere to ring grooves, piston pin fitting holes, etc. during the manufacturing process of pistons. Regarding.

b. As is well known in the prior art, an engine piston is formed into a cylindrical shape with a bottom, and a ring groove for fitting a piston ring is cut into the circumferential surface of the engine, and a ring groove is cut into the circumferential wall of the piston at opposing positions. A pair of piston pin fitting holes are formed by cutting with a drill or the like. At this time, since chips remain attached to and around the ring groove and the piston pin fitting hole, it is necessary to remove the chips and clean the piston.

Conventionally, you hold one piston in one hand and one nozzle in the other hand, and rotate the piston by hand.
Compressed air was injected from a nozzle onto the piston to blow away chips from various parts.

C9 Problems to be Solved by the Invention However, if the conventional cleaning method as described above is used to clean, for example, 1,200 pistons in a day, hand fatigue will be noticeable and work efficiency will be poor. There was a big problem. Furthermore, since it was done manually, there were variations in quality and there were also problems in terms of man-hours.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a piston cleaning device that can solve the various problems described above.

Means for Solving the d0 Problem In order to solve the above-mentioned problem, the present invention includes: (A) a rotational drive means for rotationally driving a bottomed cylindrical piston around its axis, and (B ) a first nozzle disposed corresponding to a ring groove formed on the circumferential surface of the piston; (C) a second nozzle disposed corresponding to the opening of the piston; (D) a first nozzle disposed corresponding to the opening of the piston; compressed air supply means for supplying compressed air to the first and second nozzles; and the compressed air from the compressed air supply means is supplied to the first and second nozzles while the piston is rotationally driven by the rotary drive means. The piston is cleaned by spraying the piston through a second nozzle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a piston cleaning device according to the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a piston cleaning device 1, which includes a rotary drive means 3 for rotationally driving a piston 2 having a cylindrical shape with a bottom, and a ring formed on the circumferential surface of the piston 2. A first nozzle 5 arranged corresponding to the groove 4, a second nozzle 7 arranged opposite the opening 6 of the piston 2, and compressed air is supplied to these first and second nozzles 5.7. and compressed air supply means 8 for supplying compressed air.

As clearly shown in FIG. 2, the above-mentioned rotation drive means 3 includes an impeller 11 rotatably disposed on a base 10, a rotary table 12 coaxially attached to the impeller 11, The rotary drive nozzle 14 is supplied with compressed air through a tube 13 from a compressed air tank (not shown). The rotational drive nozzle 14 is supported by a support 15 erected on the base 10 and a height adjustment member 16 attached to the support 15. (see figure) is arranged at the same height as the impeller 11. In addition, as shown in FIGS. 1 and 5, position regulating pins 17 are erected on the rotary table 12 at equal angular intervals via, for example, three mounting tables 17a. The piston 2 is inserted into the enclosed area with its opening 6 facing upward.

Further, the above-mentioned compressed air supply means 8 consists of a compressed air tank (not shown) and an air control valve 19 connected to this tank, and the compressed air from this tank is supplied via an air control pulp 19 and an air distribution pipe 20. Said tube 13 and each tube 21.22.23
It is configured to be supplied to each. and,
A portion of the compressed air supplied through the tube 21 is
As shown in FIGS. 1 and 3, the branch passage 24 of the branch pipe 24
a and presses the brake release sliding member 25 in the direction of arrow A in FIG.
The compressed air from the piston 2 is blown downwardly through the nozzle 26.

Further, as clearly shown in FIGS. 1, 3, and 4, a leaf spring member 27 is disposed corresponding to the outer peripheral surface of the rotary table 12, and one end of this temporary spring member 27 is attached to the mounting portion 28. It is fixed, and the other end is attached to the tip of the sliding member 25 described above. Further, a brake shoe 29 made of an oil-resistant rubber material or the like is bonded to the leaf spring member 27 at a location corresponding to the circumferential surface of the rotary table 12. Note that the peripheral surface of the rotary table 12 is subjected to low left processing so as to increase the frictional engagement force between the rotary table 12 and the brake shoe 29.

On the other hand, compressed air supplied via another tube 22 is guided to the first nozzle 5. This nozzle 5 is connected to the base 1
Height position adjustment support member 3 attached to support column 30 on 0
1 at a height corresponding to the ring groove 4 of the piston 2, and compressed air is blown out from the air outlet 5a toward the ring groove 4.

As shown in FIGS. 1 and 6, the above-mentioned air outlet 5a consists of small diameter through holes formed in the closing member 33, and the number of these through holes is the same as the number of ring grooves 4 of the piston 2. Therefore, the air outlet 5a and the ring groove 4 are opposed to each other one to one. In addition, if the interval (pitch) of the ring grooves 4 changes depending on the type of piston 2, by tightening the set screw 35 of the support member 31 and rotating the cylindrical nozzle 5 in the direction of arrow B in FIG. The ring groove 4 is configured to maintain an appropriate facing relationship with the air outlet 5a.

Further, the compressed air supplied through the other tube 23 is guided to the second nozzle 7 through the height adjustment support member 38 attached to the support column 37 on the base 10, and is directed downward. Compressed air is blown out from the blowing lower a of the nozzle 7 which has been opened toward the opening 6 of the piston 2.

Next, the operating procedure and operation when cleaning the piston 2 using the piston cleaning device 1 having the above-described configuration will be explained.

First, the piston 2 is inserted between the three position regulating bins 17 so that the opening 6 faces upward, and the piston 2 is placed on the three mounting tables 17a fixed to the rotary table 12. As a result, the piston 2 is placed on the rotary table 12 with its horizontal movement being prevented by the pin 17.

Thereafter, when the supply of compressed air from the compressed air tank is started by switching the air control valve 19 to the ON state, the compressed air is supplied to the tubes 13, 21, 22, and 23 via the distribution pipe 20, respectively. The compressed air supplied to the tube 21 is guided to the branch pipe 24, and a portion of the compressed air presses and moves the sliding member 25 in the branch passage 24a. Along with this, the other end of the leaf spring member 27 is displaced as shown by the imaginary line in FIG. 3, so that the leaf spring member 27 is curved due to its elasticity. As a result, the brake shoe 29 separates from the circumferential surface of the rotary table 12, and the rotary table 12 is released from the brake and becomes rotatable. Note that it is also possible to release the brake by directly blowing compressed air to the other end of the leaf spring member 27, but in this example, the sliding member 2
5, the pressing force can be increased, the amount of air used can be reduced, and energy savings can be achieved.

Meanwhile, at the same time, a portion of the compressed air flows into the branch path 24a.
from the nozzle 26 to the lower part of the piston 2.

Further, the compressed air supplied to the tube 13 is guided to a rotationally driving nozzle 14, and is blown toward the impeller 11 from its outlet as shown by the arrow in FIGS. 5 and 6. As a result, the impeller 11 is rotationally driven,
The rotary table 12 and the piston 2 whose brakes have been released as described above are driven to rotate together with the impeller 11 about its axis. Note that the rotational speed of the impeller 11 and thus the piston 2 is controlled by operating the air control valve 19.

On the other hand, the compressed air supplied to the tube 22 is guided to the first nozzle 5 for cleaning, and passes through the three air outlets 5a as shown in FIGS. The two ring grooves 4 are sprayed in a one-to-one relationship. Furthermore, at the same time, the compressed air supplied to the tube 23 is guided to the second cleaning nozzle 7,
As clearly shown in FIG. 2, the air is sprayed from the blow-off lower a above the piston 2 toward approximately the center of the opening 6.

As a result, remaining chips generated during the cutting process of the ring groove 4 are reliably blown away from inside and around the ring groove 4 by the compressed air from the nozzles 5 and 26, and the piston formed in the piston 2 is Remaining chips generated during the process of cutting the pin fitting hole 9 are blown up from inside the piston 2 through the opening 6 by compressed air from the nozzle 7 and are reliably removed. Such a series of cleaning operations is completed in about 5 seconds, for example.

Immediately after the cleaning is completed, the control valve 19 is automatically switched to the OFF state by an electric control system (not shown). Along with this, the sliding member 25 moves back, so the leaf spring member 2
7 is restored as shown by the solid line in FIG. 3, and the brake shoe 29 frictionally engages with the circumferential surface of the rotary table 12. Therefore, the rotary table 12 and the piston 2 do not rotate for a long period of time due to inertia and are rapidly stopped, so that the next piston cleaning operation can be carried out immediately, resulting in extremely high working efficiency.

Furthermore, according to the device 1 of this example, the rotational drive of the piston 2, cleaning, and the release of the brake of the rotary table 12 are simultaneously performed using only the compressed air from the compressed air tank, so the configuration is very simple. It has the advantage of being simple.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

For example, in the embodiments described above, the second nozzle 7 is arranged to correspond to the approximate center of the opening 6 of the piston 2, but it can be moved as needed to the position corresponding to the opening 6. Good too.

C9 Effects of the Invention As described above, the piston cleaning device according to the present invention cleans the ring groove of the piston, the piston pin insertion hole, etc. by using the compressed air blown from the first and second nozzles while rotating the piston. Since it is designed to blow away remaining chips generated during the process, the operator only has to perform simple manual operations such as installing and removing the piston from the device and operating the switch. Other cleaning operations can be performed automatically by this device. Therefore,
Pistons can be cleaned extremely efficiently with simple operations, and workability can be greatly improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the piston cleaning device according to the present invention, and FIG. 1 is a plan view of the piston cleaning device, FIG. 2 is a side view of the piston cleaning device, and FIG. 3 is a view of the rotary table. FIG. 4 is a schematic side view of the brake mechanism, FIG. 5 is a plan view of the main parts of the piston cleaning device, and FIG. 6 is a side view of the main parts of the piston cleaning device. l... Piston cleaning device, 2... Piston,
3... Rotation drive means, 4... Ring groove, 5
...First nozzle for cleaning, 5a... Air outlet, 6.
... Piston opening, 7... Second nozzle for cleaning, 7a... Air outlet, 8
... Compressed air supply means, 9 ... Piston pin fitting hole, 11 ... Impeller, 1
2... Rotary table, 13, 21.22.23... Tube, 14... Nozzle for rotational drive, 17... Position regulation pin, 19.
...Air control valve, 26...Nozzle,
27... Leaf spring member, 29... Brake shoe. Figure 2 Figure 3 FIJ Figure 4 Figure 5

Claims (1)

[Scope of Claims] (A) a rotary drive means for rotationally driving a bottomed cylindrical piston around its axis; (B) a rotation drive means disposed corresponding to a ring groove formed on the peripheral surface of the piston; (C) a second nozzle disposed corresponding to the opening of the piston; (D) compressed air supply means for supplying compressed air to the first and second nozzles; and cleaning the piston by spraying compressed air from the compressed air supply means onto the piston through the first and second nozzles while rotating the piston with the rotation driving means. A piston cleaning device characterized by: