JPH1133450A - Oil application equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately and easily apply the oil in an oil-impregnated part on the outer face of a rod-shaped component by inserting the component into the oil-impregnated part through the hole formed therein. SOLUTION: A couple of through-holes 2a are formed in a thick sponge member 2 in a first oil coater 65, and a punched sheet 3 is furnished on the lower face of the sponge member 2. Further, a thin rubber sheet 6 provided with an opening smaller in diameter than the hole 2a of the member 2 and an annular washer 7 are set at the part of the hole 2a on the upper face of the sponge member 2 and connected along with the punched sheet 3 by a bolt 8. A component, e.g. a suction valve 4, held by the chucks 58 and 59 in the holding hand of a robot is lowered, hence the suction valve 4 is inserted into the hole 2a of the member 2, the oil impregnated into the sponge member 2 is applied to the outer face of the valve 4, and then the valve is raised to wipe off the surplus oil by the rubber sheet 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for applying oil to a part when attaching the part to the machined product in a production line of the machined product.

[0002]

2. Description of the Related Art When attaching a component (for example, a reamer bolt or an oil seal) to a machined product, an oil (lubricating oil or rust-preventing oil) is required in advance to prevent breakage and seizure of the component and rust prevention. ) Is often applied to a part and the part is attached to a machined workpiece. In this case, the worker of the production line often applies oil to the parts using a greaser or a brush.

[0003]

When a multi-joint type robot arm is used in a machined product production line, and the robot arm holds the component and automatically attaches the component to the machined product, it is difficult to use a component. An oil application device that can appropriately apply the oil is required. An object of the present invention is to provide an oil application device that can appropriately and easily apply oil to parts in a production line of machine products, particularly when a robot arm is used.

[0004]

According to a first aspect of the present invention, when oil is applied to the outer surface of a rod-shaped part, the rod-shaped part is inserted into the opening of the oil-impregnated part, so that the oil-impregnated part is impregnated. Oil transfers from the inner surface of the opening to the outer surface of the rod-shaped part, and the oil is applied to the outer surface of the rod-shaped part. In the case of applying oil to the inner surface of the ring-shaped component, according to the feature of claim 2, if the ring-shaped component is inserted into the tapered oil-applied portion, the oil on the outer surface of the oil-applied portion becomes the inner surface of the ring-strong component. The oil is applied to the inner surface of the ring-shaped part. As described above, according to the features of the first and second aspects, the outer surface of the rod-shaped component (the ring-shaped component) is simply inserted into the opening (the tapered oil-coated portion) of the oil-impregnated portion. Oil can be easily applied to the inner surface of the ring-shaped component.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

(1) FIG. 1 shows a part of a production line of a cylinder head W in a diesel engine, which is provided with an articulated robot arm 12, a first oil application device 65, and a second oil application device 66. A holding portion 46 is supported so as to be swingable up and down around an axis P2 at the tip of the robot arm 12 and rotatable around an axis P3 orthogonal to the axis P2. Are configured so as to be connected and supported and to be removable.

(2) Next, the first oil application device 65 will be described. As shown in FIGS. 9 and 10, a pair of penetrating openings 2 a is provided in a thick sponge member 2 having a rectangular shape in a plan view, and a punching plate 3 having a large number of openings is provided on a lower surface of the sponge member 2. Has been assigned. A thin rubber plate 6 and a ring-shaped washer 7 having an opening having a diameter slightly smaller than the opening 2a of the sponge member 2 are placed on the opening 2a on the upper surface of the sponge member 2, and the rubber plate 6 and the washer are mounted. 7 and the punching plate 3 are connected by bolts 8.

[0007] A box-shaped support portion 9 is provided, and the sponge member 2 is mounted on the support portion 9. The sponge member 2 is not moved by a detachable press plate 10 having a rectangular ring shape in plan view. It is held down. The oil stored in the tank 11 is configured to be supplied to the sponge member 2 from the support portion 9 and the punching plate 3 by the pump 13.

Normally, the pump 13 is stopped, and each time the set time elapses (or as described later, the holding hand 4
The robot arm 12 that connects and supports 9 to the holding portion 46
The pump 13 is operated for a necessary time, and the oil is supplied to the sponge member 2 based on a signal indicating that the sponge member 2 moves to the first oil application device 65 as shown in FIG.
Is entirely impregnated with oil, and the oil that has fallen from the sponge member 2 to the bottom of the support portion 9 returns to the tank 11 from the recovery port 9a of the support portion 9 through the oil passage 14. By removing the holding plate 10, the sponge member 2, the punching plate 3, the rubber plate 9 and the washer 7 can be integrally removed from the support portion 9. The sponge member 2 can be replaced with another sponge member 2, or the support portion 9 can be replaced. Cleaning of the inside of the device can be performed.

Next, the second oil application device 66 will be described. As shown in FIGS. 11 and 12, a nozzle 1 having a stepped tapered tip portion 16a in which a rectangular recessed portion 15a is formed in a plan view in a thick plate-shaped support portion 15 and a stepped tapered tip portion 16a is formed.
6 are attached to the concave portion 15 a of the support portion 15. Supply path 16 penetrating from lower part to tip part 16a
b is formed in the nozzle 16, and the oil stored in the tank 17 is supplied to the supply path 16 b of the nozzle 16 by the pump 18.

Normally, the pump 18 is stopped, and each time the set time elapses (or as described later, the holding hand 4
The robot arm 12 that connects and supports 9 to the holding portion 46
As shown in FIG. 6, the pump 18 is operated for a required time to supply oil to the supply passage 16b of the nozzle 16 based on a signal indicating that the oil is moved to the second oil application device 66. Due to the oil overflowing from the nozzle 16b, the oil has adhered to the outer surface of the tip 16a of the nozzle 16,
From the tip 16a of the nozzle 16 to the recess 15a of the support 15
The oil which has fallen into the oil passage 19
And returns to the tank 17.

(3) Next, the flow of mounting the intake and exhaust valves 4 and 5 by the holding hand 49 will be described with reference to FIGS.
A description will be given based on FIG. As shown in FIG. 1, the robot arm 12 having a holding hand 49
, The suction valve 4 is held and taken out by one of the chucks 56 and 57 of the four sets of the holding hand 49, and the holding hand 49 is rotated by 180 ° so that the chuck 56 holding the suction valve 4 is rotated. The exhaust valves 5 are held and taken out by the chuck portions 56 and 57 on the opposite side of the right and left sides by 180 °. Cylinder head W by conveyor 1
Has been transported to the working position G3 (first reference board 81),
A positioning pin (not shown) of the first reference board 81 projects upward to enter the opening of the cylinder head W, and the pressing portion 83 of the first reference board 81 holds the cylinder head W.

The robot arm 12 (holding hand 49) from which the intake and exhaust valves 4 and 5 are taken out moves to the first oil applicator 65 as shown in FIG. 49 is rotated 180 ° to apply oil to the exhaust valve 5. As shown in FIG.
Between the chuck portions 56 and 57 of the first oil application device 65
Is set to be the same as the interval between the openings 2a of the sponge member 2. Thus, the robot arm 12
By lowering the (holding hand 49), the intake valve 4 (exhaust valve 5) held by the chuck portions 56 and 57 is simultaneously inserted into the opening 2a of the sponge member 2 in the first oil application device 65, The oil impregnated in the sponge member 2 is applied to the outer surface of the intake valve 4 (exhaust valve 5), and the robot arm 12 (holding hand 49)
As the pressure rises, excess oil applied to the outer surface of the intake valve 4 (exhaust valve 5) is wiped off by the rubber plate 6.

Next, the robot arm 12 (holding hand 4)
9) moves to the work position G3 and the robot arm 12
(Holding hand 49) moves intake valve 4 to cylinder head W
Insert As shown in FIG.
The (holding hand 49) is lowered, and the chuck portions 56, 57
Is inserted into the cylinder head W, the right and left chucks 58 and 59 of the chuck portions 56 and 57 are operated to separate from each other, and the robot arm 12
The (holding hand 49) is raised, and the right and left chucks 58, 59 of the chuck portions 56, 57 are operated close to each other as shown in FIG. 3, and the robot arm 12 (holding hand 49) is lowered again. This allows the right and left chucks 58,5
The intake valve 4 is pushed into the cylinder head W by the distal end of the cylinder 9, and the distal end of the intake valve 4 penetrates downward through the cylinder head W and enters the opening (not shown) of the first reference board 81. When the attachment of the intake valve 4 to the cylinder head W is completed as described above, the holding hand 4
9 rotates 180 °, and the exhaust valve 5 is attached to the cylinder head W in the same manner as in the case of the intake valve 4 as shown in FIGS.

When the intake and exhaust valves 4 and 5 are attached to the cylinder head W at the working position G3 as described above, the upside down device 64 is moved to the working position G4 (see FIG. 5) as shown in FIGS. To the working position G3, the support plate 74 of the upside-down reversing device 64
5, the positioning pins (not shown) of the first reference board 81 retreat downward, and the holding of the cylinder head W by the pressing portion 83 is released.

As a result, the pressing plate 7 of the upside down device 64
9, the vertical intermediate position of the cylinder head W is held, and as shown in FIG.
Swing to the working position G4. In this case, since the support plate 74 of the upside-down device 64 is applied to the intake and exhaust valves 4 and 5 as described above, when the upside-down device 64 swings from the working position G3 to the working position G4, the intake Since the exhaust valves 4 and 5 do not fall down, the support plate 74 of the upside down device 64 enters a slit (not shown) of the second reference plate 88 at the working position G4.

The cylinder head W is moved by the upside down device 64.
Is placed at the working position G4 (second reference board 88), the second
The positioning pin (not shown) of the reference board 88 projects upward and enters the opening of the cylinder head W, and the pressing plate 79 of the upside down device 64 maintains the state where the cylinder head W is held at the working position G4. I do.

(4) Next, the flow of attaching the stem seal 50 by the holding hand 49 will be described with reference to FIGS. Upside down device 6 according to (3) above
In parallel with the operation of 4, the robot arm 12 (holding hand 49) moves to a stem seal supply device (not shown),
One set of chuck portions 5 of four sets of holding hands 49
6 and 57, the stem seal 50 is held and taken out, and the holding hand 49 is rotated by 180 °.
The stem seal 50 is held and taken out by the chuck portions 56 and 57 on the opposite side by 80 °.

As shown in FIG. 6, the robot arm 12 (holding hand 49) holding the stem seal 50 moves to the second oil applicator 66, and applies oil to the stem seal 50 (holding hand 49 turns 180). (Rotation by .degree.), Move to the robot arm 12 (holding hand 49) at the work position G4, and insert the stem seal 50 into the intake and exhaust valves 4, 5 of the cylinder head W at the work position G4 (fifth hand 4)
9 rotates 180 °).

As shown in FIG. 11, the interval between the chuck portions 56 and 57 of the holding hand 49 and the interval between the nozzles 16 in the second oil application device 66 are set to be the same. Thus, by lowering the robot arm 12 (holding hand 49), the stem seal 50 held by the chuck portions 56 and 57 is simultaneously inserted into the distal end portion 16a of the nozzle 16 in the second oil application device 66, and Nozzle 1
The oil adhering to the outer surface of the tip 16 a of the sixth 6 is applied to the inner surface of the stem seal 50.

Next, the robot arm 12 (holding hand 4)
9) moves to the standby position of the holding hand 49, separates the holding hand 49 from the holding unit 46 and places it in the standby position, and the robot arm 12 moves to the standby position of the pushing hand 51 and is placed in the standby position. The pushing hand 51 is connected to and supported by the holding portion 46. As shown in FIGS. 7 and 8, the pushing hand 51 is configured such that a connecting portion 51 a to the holding portion 46 of the robot arm 12 and a pushing portion 51 c are provided on a rectangular flat plate 51 b. As a result, as shown in FIG. 7, the robot arm 12 connected and supported by the pushing hand 51 is moved to the working position G4,
The stem seal 50 inserted into the intake and exhaust valves 4 and 5 by the (pressing portion 51c of the pushing hand 51).
Press.

As described above, the mounting of the intake and exhaust valves 4, 5 and the stem seal 50 is completed, and the positioning pins (not shown) of the second reference board 88 are retracted downward, and The holding of the cylinder head W by the pressing plate 79 of the reversing device 64 is released. Thereby, as shown in FIG. 8, the robot arm 12 (the flat plate 51b of the pushing hand 51) pushes the cylinder head W out of the working position G4, and the pushed cylinder head W is transported to the next step.

[Another Embodiment of the Invention] FIGS. 11 and 12
May be configured as shown in FIG. 13. As shown in FIG. 13, a conical oil application section 21 is fixed to a disk-shaped support section 20 having a concave portion 20 a, and one first supply passage 21 a is provided inside the oil application section 21. In addition, a plurality of second supply paths 21b are provided which are radially opened from the first supply path 21a to the outer surface of the oil application section 21. The oil stored in the tank 22 is configured to be supplied to the first supply path 21a of the oil application unit 21 by the pump 23.

Normally, the pump 23 is stopped, and every time the set time elapses (or as described above, the holding hand 49).
Is moved to the second oil application device 66 based on a signal that the robot arm 12 that has connected and supported the
The pump 23 operates only for a necessary time to supply the oil to the oil application unit 2.
1 is supplied to the first supply passage 21a, and the oil that has overflowed from the first and second supply passages 21a and 21b is in a state where the oil adheres to the outer surface of the oil application unit 21. The oil that has fallen into the concave portion 20a of the support portion 20 from the support portion 2
The oil returns to the tank 22 through the oil passage 24 from the 0 recovery port 20b.

[0024]

According to the first and second aspects of the present invention, the outer surface of the rod-shaped part can be obtained simply by inserting the rod-shaped part (ring-shaped part) into the opening (tapered oil-coated part) of the oil-impregnated part. An oil application device capable of easily applying oil to (the inner surface of the ring-shaped component) was obtained. In particular, in the case of a production line of a machine product that is configured to hold a part by a robot arm and automatically attach the part to a machined work, the part is formed into an opening (a tapered shape) of an oil impregnated part of an oil applicator. By operating the robot arm so that it can be inserted into the oil-applied part, the outer surface of the rod-shaped part (the inner surface of the ring-shaped part) can be appropriately applied with oil, so that In a production line, productivity can be improved by shortening the assembly process and the like.

[Brief description of the drawings]

FIG. 1 shows a holding hand holding an intake valve and an exhaust valve.
Front view showing a state of approaching the cylinder head at work position G3

FIG. 2 is a front view showing a state in which the holding hand holding the intake and exhaust valves next to FIG. 1 has the intake and exhaust valves inserted into a cylinder head at a working position G3;

FIG. 3 is a front view showing a state in which the holding hand has pushed the intake and exhaust valves into the cylinder head at the working position G3 next to FIG. 2;

FIG. 4 is a front view showing a state in which the upside-down device in the working position G4 swings to the working position G3 and holds the cylinder head next to FIG. 3;

FIG. 5 is a front view showing a state where the upside down device holding the cylinder head has been swung to a working position G4 next to FIG. 4;

FIG. 6 is a front view showing a state where the holding hand holding the stem seal inserts the stem seal into the intake and exhaust valves of the cylinder head at the working position G4 next to FIG. 5;

FIG. 7 is a front view showing a state in which the pushing hand next to FIG. 6 pushes the stem seal into the intake and exhaust valves of the cylinder head at the working position G4.

FIG. 8 is a front view showing a state where the pushing hand has pushed out the cylinder head at the working position G4 next to FIG. 7;

FIG. 9 is a vertical sectional front view of the first oil application device.

FIG. 10 is a plan view of a first oil application device.

FIG. 11 is a vertical front view of a second oil application device.

FIG. 12 is a plan view of a second oil application device.

FIG. 13 is a longitudinal sectional front view of a second oil application device according to another embodiment of the present invention.

[Explanation of symbols]

 2 Oil-impregnated part 2a Opening of oil-impregnated part 4,5 Rod-shaped part 16a, 21 Oil-coated part 50 Ring-shaped part

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hideki Matsushita 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works (72) Inventor Shuichi Ogata 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. Inside

Claims (2)

[Claims] 1. An oil-impregnating section for impregnating oil, an opening formed in the oil-impregnating section, and an oil supply section for supplying oil to the oil-impregnating section. An oil application device configured to apply the oil of the oil-impregnated portion to the outer surface of the rod-shaped component by inserting the oil into the oil-impregnated portion. 2. An oil application device comprising: a tapered oil application portion; and an oil supply portion for supplying oil to an outer surface of the oil application portion, wherein a ring-shaped component is inserted into the oil application portion. An oil applicator configured to apply oil of a part to an inner surface of a ring-shaped component.