JPH0227904Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grease applicator that is capable of applying grease only to a predetermined portion of a workpiece in the axial direction.

[Prior art]

Conventionally, when applying grease to the outer peripheral surface of a shaft or the outer peripheral surface or inner peripheral surface of a cylindrical workpiece, a grease discharge port of a nozzle is positioned on the grease application surface of the workpiece, and grease is discharged from the discharge port. By rotating the work or the nozzle in this state, grease was applied to the above-mentioned grease application surface.

By the way, when applying grease to the workpiece,
It is sufficient to apply grease only to the necessary parts; applying grease to unnecessary parts is not only uneconomical but also may cause functional problems depending on the workpiece. Therefore, in the past, various grease applicators have been devised that can apply grease only to predetermined parts of the workpiece.
- There was something like the one described in Publication No. 163470. This involved inserting a nozzle into the shaft hole of the workpiece roller, discharging grease, and rotating the nozzle in this state.

However, with this conventional device, when the nozzle is moved back after applying grease, even though the supply of grease has been stopped, the grease remaining at the nozzle discharge port may be applied to parts of the workpiece that do not need to be greased, or There was a problem in that so-called grease dragging phenomenon occurred, in which grease adhered to areas where it should not be applied.

[Purpose of invention]

The present invention has been made in view of the problems of the conventional ones as described above, and it is an object of the present invention to provide a grease applicator that can separate the nozzle from the grease application surface after applying the grease, thereby preventing the grease from dragging. It is an object.

[Structure of the idea]

The present invention provides a grease application device in which a nozzle holder is provided so as to be movable forward and backward and rotatable, and a nozzle is provided in the nozzle holder so as to be movable forward and backward with respect to the grease application surface and biased toward the application surface. A sliding member biased forward is provided with a contact portion that contacts the workpiece when the nozzle holder moves forward, and a cam portion that presses the nozzle toward the side opposite to the grease application surface when the nozzle holder moves back. and
As a result, when applying grease, as the nozzle holder advances, the abutting part is pressed against the workpiece, and the slide member retreats relatively, bringing the nozzle closer to the grease application surface, and after applying grease, the nozzle holder retreats, causing the slide member The nozzle is moved forward and the cam portion of the nozzle is moved away from the grease application surface.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show an embodiment of the present invention,
In the figure, 1 is an assembly line for the transaxle case 31 and clutch housing 32, and a conveyor frame 3 is installed between frames 2 provided at predetermined intervals. Conveyor rollers 6 are arranged at predetermined intervals to convey the pallet 5 on which the jig 4 is placed.
Further, a lift cylinder 7 is attached to the lower side of the conveyor frame 3.
The piston rod 7a is fixed to a receiving plate 8 which raises the pallet 5.

A support bracket 12 of the grease applicator 10 of this embodiment is fixed to the upper part of the lift cylinder 7 of the pedestal 2.
A longitudinal cylinder 13 is fixed to the upper part of 2, and a guide bush 14 is fixed to the lower part, and a guide rod 15 is slidably inserted into the guide bush 14. In addition, the guide rod 1
A support plate 16 is attached between the tip of the piston rod 5 and the tip of the piston rod 13a of the longitudinally moving cylinder 13.

A nozzle holder 18 is attached to the lower part of the support plate 16 so as to face the primary shaft 31a and the nose part 32a of the workpiece 33, and is rotatable around its axis. Although not shown, a drive sprocket attached to the output shaft of the motor 17 is connected via a chain to a driven sprocket attached to the nozzle holder 18, and in this way, the entire rear The moving cylinder 13, the rotary drive motor 17, and the like constitute a holder drive device 11 that drives the nozzle holder 18 in the longitudinal direction and rotational direction.

Further, the nozzle holder 18 has a rotating shaft 18a rotatably supported by the support plate 16.
, a base portion 18b having a hat-like cross section, a cylindrical slide member accommodating portion 18c, and a substantially conical nozzle support portion 18d. The nozzle support part 18d
Two slit-shaped nozzle guide portions 18e are formed facing each other across the axis of the nozzle holder 18, and a first nozzle 19 is disposed in each nozzle guide portion 18e. 1st nozzle 1
The upper end portion of the slide member 9 is swingably supported by a pin 19a in the slide member accommodating portion 18c. The first nozzle 19 is rod-shaped, and a grease discharge port 19b is recessed at its tip.
A grease supply device 21 is connected to the grease passage 19c communicating with the grease passage 9b via a grease supply pipe 20. Further, a ring-shaped coil spring 22 is attached to the tip of the outer circumferential surface of each of the first nozzles 19, so that each of the first nozzles 19 is biased inward.

Further, behind the first nozzle 19 inside the nozzle holder 18, a slide member 23 is disposed so as to be slidable in the same direction as the advancing and retreating direction of the nozzle holder 18. The slide member 23 has a cylindrical shape, and a sliding portion 23a that slides in sliding contact with the inner peripheral surface of the slide member accommodating portion 18c is integrally formed at the rear end of the outer peripheral surface of the slide member 23, and the sliding portion 23a and the slide A locking ring 24 fitted to the inner peripheral surface of the member accommodating portion 18c
A biasing spring 25 is installed between them, and this biases the slide member 23 forward (to the left in FIG. 1), and the biasing force of this biasing spring 25 is stronger than that of the coil spring 22. .

A first cam portion 23b is formed at a front portion of the slide member 23 facing the first nozzle 19, and a first cam surface 23c of the cam portion 23b.
is a slope that becomes lower toward the tip, and when the slide member 23 is pushed forward by the biasing spring 25, the first cam surface 23c comes into contact with the first nozzle 19 and pushes it outward. Make it sway.

Further, a contact portion 23d is provided on the rear part of the inner circumferential surface of the slide member 23 to project inwardly, and the corresponding contact portion 23d contacts the workpiece as the nozzle holder 18 moves forward, causing the slide member 23 to move relative to the workpiece. make them retreat. Further, a second cam portion 23e extending rearward is integrally formed with the contact portion 23d.
The cam portion 23e has a second cam surface 2 that becomes higher toward the rear.
3f is formed.

Furthermore, two second nozzles 26 are accommodated in the rear portion of the slide member accommodating portion 18c, facing each other across the axis of the nozzle holder 18, and movable in a direction perpendicular to the axis. A base 26a of each second nozzle 26 projects outward from the nozzle holder 18, and a ring-shaped coil spring 27 is attached to this base 26a, thereby urging each second nozzle 26 inward. ing.

Also, like the first nozzle 19, a grease discharge port 26b is provided concavely at the tip of the second nozzle 26.
is connected to a grease supply device 29 via a grease passage 26c and a grease supply pipe 28. Further, a cam portion 26d is provided protruding from the front side of the second nozzle 26, and a cam surface 26e of the cam portion 26d can come into contact with the second cam surface 23f of the slide member 23.

Next, the action and effect will be explained.

This embodiment device has a transaxle case 31
This is a device for applying grease to the clutch plate support portion 31b of the primary shaft 31a extending from the clutch housing 32 and the release bearing support portion 32b of the nose portion 32a integrally formed with the clutch housing 32. In the previous process, the transaxle case 31 and the clutch housing 32 are assembled to form a workpiece 33, which is placed on the jig 4 on the pallet 5. When the workpiece is conveyed to the equipment section of this embodiment by the conveyance rollers 6, The cylinder 7 expands, and the workpiece 33 rises and is positioned at a predetermined grease application position.

Once the workpiece 33 is positioned, the apparatus of this embodiment applies grease to the workpiece 33. Before starting this grease application work, the slide member 23 is in its forward position. The first cam surface 23c presses the first nozzle 19 outward, and the second cam surface 23f presses the cam surface 26e of the second nozzle outward, so that the first and second nozzles 19 , 26 are moved outwardly against the respective coil springs 22, 27 and are away from the respective grease application surfaces.

To apply grease, first, the longitudinal cylinder 13 is extended. Then, the nozzle holder 18 moves forward and is fitted into the nose portion 32a and the primary shaft 31a, and when the nozzle holder 18 moves further forward, the contact portion 23d of the slide member 23 comes into contact with the end surface of the nose portion 32a, and the slide The member 23 does not advance any further, but retreats relatively, so that the first and second portions of the slide member 23
This is the same as the cam surfaces 23c, 23f being separated from the cam surfaces of the first nozzle 19, second nozzle 26, and as a result, the first and second nozzles 19, 26 are urged by the coil springs 22, 27. The grease discharge ports 19b and 26b of the first and second nozzles 19 and 26 come into contact with the release bearing support portion 32b and the clutch plate support portion 31b, respectively.

In this state, the grease supply devices 21 and 29
Grease is supplied to the first and second nozzles 19 and 26, and the nozzle holder 18 is further rotated by 180 degrees by the rotary drive motor 17. As a result, the release bearing support portion 32b and the clutch plate support portion 3 are rotated by the rotation drive motor 17.
Grease is applied to the entire circumferential surface of 1b.

When the application of the grease is finished, the supply of grease and the rotation of the drive motor 17 are stopped, and the longitudinal cylinder 13 is contracted. Then, the nozzle holder 18
moves backward, and the slide member 23 is biased by the spring 25 and moves relatively forward without moving backward for a while, so that the first and second cam surfaces 23c and 23f of the slide member 23 move toward the first and second cam surfaces 23c and 23f. Pressing the two nozzles 19, 26 moves them outwards, so that the first and second nozzles 19,
The 26 grease discharge ports 19b and 26b are separated from each of the above-mentioned grease application surfaces, and will not come into contact with any work surface other than the grease application surface when the nozzle holder 18 is further retreated.

In this way, in this embodiment, when applying grease,
Just by inserting the nozzle holder 18 into the workpiece 33, the grease discharge ports 19 of the first and second nozzles 19, 26 are opened.
b, 26b can be brought into contact with the grease application surface, and grease can be applied only to necessary parts. Also, after applying grease, simply move the nozzle holder 8 back and the grease discharge ports 19b, 26 of the first and second nozzles
b can be separated from the grease-applied surface, preventing the grease from dragging.

Furthermore, since the nozzles 19 and 26 are moved using the back and forth movement of the nozzle holder 18, a nozzle drive device is not required, and the structure can be simplified.

Note that in the above embodiment, the first and second nozzles 19,
26, but in the present invention, it is of course possible to provide only one of them, and although two nozzles are provided for each nozzle, it is of course possible to provide one nozzle; in this case, Nozzle holder 18
All you have to do is rotate it 360 degrees.

Furthermore, in the above embodiment, the case where the grease application surface is the outer surface of the nose portion 32a, etc., has been described, but the present invention can also be applied to the case where grease is applied to the inner surface of the workpiece, and in this case, the nozzle is It may be configured to move outward during grease application and inward after application.

[Effect of idea]

As described above, according to the grease application device of the present invention, the nozzle is provided in the nozzle holder so as to be able to move forward and backward with respect to the grease application surface and biased against the application surface. Since a slide member is provided to move the nozzle away from the workpiece, the simple structure allows the nozzle to approach or move away from the grease application surface by simply moving the nozzle holder forward or backward. This has the effect of preventing the grease from dragging after application.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a nozzle holder, nozzle, and slide member portion of a grease applicator according to an embodiment of the present invention, and FIG. 2 is a sectional front view of an assembly line to which the above embodiment is applied. DESCRIPTION OF SYMBOLS 10... Grease applicator, 11... Holder drive device, 18... Nozzle holder, 19, 26... Nozzle, 19b, 26b... Grease discharge port, 23...
...Slide member, 23b, 23e...Cam part, 2
3d...Abutment portion, 31b, 32b...Grease applied surface (clutch plate support portion, release bearing support portion), 33...Work.

Claims (1)

[Claims for Utility Model Registration] A device for applying grease in an annular manner only to the grease-applied surface of a predetermined portion in the longitudinal direction of a cylindrical part of a workpiece, which is provided at a setting position where the workpiece is set in a fixed posture.
a nozzle holder supported on a base so as to be movable forward and backward facing the cylindrical portion of the workpiece and rotatable around the axis of the cylindrical portion of the workpiece; a holder drive device that moves the nozzle holder forward and backward as well as rotationally; The nozzle holder is supported movably in a direction perpendicular to the axis of the cylindrical part of the workpiece, and a grease discharge port provided at the tip thereof is biased in a direction approaching the surface of the cylindrical part to be greased. a slide member supported by the nozzle holder so as to be movable in the same direction as the advancing and retracting direction of the nozzle holder, and biased toward the cylindrical portion of the workpiece with a greater biasing force than the nozzle; The slide member includes a cam part that comes into contact with the nozzle and moves the nozzle in a direction in which the grease discharge port at the tip of the nozzle moves away from the surface to be greased of the cylindrical part, and a cam part that comes into contact with the cylindrical part of the workpiece during the forward stroke of the nozzle holder. A grease applicator comprising: a contact portion that contacts an end face and prevents forward movement of the nozzle holder.