JPS6121715B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating device for coating grease or the like.

For example, in the assembly work of automobile parts, there is a step of applying grease as a coating agent around a ball joint, which is a member to be coated.

Conventionally, this kind of coating work was carried out by a worker operating a coating gun, etc., but when the workpiece to be coated has uneven parts, cutouts, etc., such as ball joints, For this purpose, it is necessary to appropriately adjust the increase/decrease in the amount of coating and control the coating state. For this reason, the operator must perform the application work while adjusting the amount of grease discharged from the application gun and the position thereof, which not only requires skill but also makes the work itself complicated. In addition, if the amount and conditions of application are inappropriate, it may cause problems such as malfunction or corrosion of the parts to be coated, such as ball joints, so work must be done carefully and reliably. As a result, there was a problem that work efficiency was extremely poor.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide accurate and accurate information with a simple configuration.
In addition, the objective is to obtain a coating device that can perform coating work efficiently, and for this purpose, the discharging of the coating agent, the rotation of the nozzle, and the movement of the nozzle in the radial direction are performed in synchronization, and the coating can be applied in multiple layers in a toggle pattern. The present invention is characterized in that an appropriate coating amount and coating condition can be achieved by doing the following.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional explanatory diagram showing an embodiment of a coating device according to the present invention, and FIG.
The line sectional view, FIG. 3, is an explanatory diagram of the operation of FIG. 1, in which 1 is a base body, 2 is a quantitative supply device for grease 3 as a coating agent, 4 is a drive source such as a motor, 5 is a drive shaft, and 6 is a distribution shaft, 7 is a gear, 8 is an application shaft, 9 is a plunger, 10 is a sleeve, 11 is a slider, 1
2 is a nozzle, 13 is a ball joint as a member to be coated, and 14 is a driving means.

A drive shaft 5, a distribution shaft 6, and a coating shaft 8 are rotatably supported on the hollow base 1, and the drive shaft 5 is rotated by the rotational force generated from a drive source 4 such as a motor, and this rotation is transmitted from the distribution shaft 6 to the application shaft 8 by the gear 7. By adjusting the ratio between the gear 7 of the distribution shaft 6 and the gears 15 and 16 of the drive shaft 5 and coating shaft 8, the rotational speed of the distribution shaft 6 and coating shaft 8 can be adjusted according to the amount of coating and the required degree of coating range. It can be changed.

A distribution shaft 6 rotated by a drive shaft 5 via a gear 7 transmits rotational force to a coating shaft 8 and a nozzle 12.
is rotated around the ball joint 13, and the plunger 9 is reciprocated by cam mechanisms provided at the upper and lower ends thereof, and the position of the nozzle 12 is moved in the radial direction of the coating shaft 8.

To explain this separately, the applicator shaft 8 has a gear 16 with a specific gear ratio that engages with the gear 7 of the distribution shaft 6, and is hollow inside so that a plunger 9 can be inserted thereinto for free reciprocation. It is fitted. Further, the hollow portion is configured to receive a fixed amount of grease 3 necessary for one application operation from a fixed amount supply device 2 for grease 3. As the quantitative supply device 2, for example, a pump or a cylinder is used, and a distribution shaft 6 is used.
A structure that synchronizes with the rotation of, for example, can be considered.
Further, a sleeve 10 is movably engaged with the lower outer periphery of the coating shaft 8, and the sleeve 10 moves a slider 11 against the force of a spring 17 to change the position of the nozzle 12 on the coating shaft 8. radially spaced apart.

A first cam 18 is installed at the upper end of the distribution shaft 6, and the first cam 18 contacts a roller 20 provided on a lever 19 to move the lever 19 up and down. That is, the lever 19 is connected to the plunger 9
A spring 21 is tensioned between the roller 20 and the engaging end of the plunger 9. As a result, when the first cam 18 of the distribution shaft 6 rotates, the first cam 18 rotates to the roller 2.
0 and the lever 19 are moved up and down, and this up and down movement is converted into a reciprocating motion of the plunger 9, and the grease 3 that has been force-fed into the coating shaft 8 is discharged at a predetermined timing.

In addition, a cam mechanism similar to that described above is provided at the lower end of the distribution shaft 6 with the phase adjusted, and the nozzle 1
The grease 3 is applied to a predetermined position of the ball joint 13 by moving the position of the ball joint 13.
That is, the second cam 22 at the lower end engages with a roller 24 provided on a lever 23, and the lever 23 is pivotally supported at one end, and the other end is rotatably engaged with the sleeve 10. and is further urged toward the base body 1 by a spring 25. As a result, when the second cam 22 at the lower end of the distribution shaft rotates, the second cam 22 moves between the roller 24 and the lever 22.
3 to move the sleeve 10 up and down. However, the lower end of the sleeve 10 has a tapered shape and is in contact with the slider 11. For this reason, the slider 11 is normally urged by the spring 17 in a direction approaching the application shaft 8, but as the sleeve 10 descends, it moves away from the nozzle 12. move.
The first cam 18 and the second cam 22 described above constitute the driving means 14.

Next, to explain the operation of the above embodiment, the rotational force of the drive source 4 is transmitted to the distribution shaft 6 via the drive shaft 5, the gear 7, etc., and the distribution shaft 6 applies this rotational force to the distribution shaft 6. It is divided into three parts: shaft 8, plunger 9, and sleeve 10. That is, the coating shaft 8 rotates under an appropriate gear ratio, and the nozzle 12 at the lower end also rotates around the ball joint 13 accordingly.

Further, the first cam 18 at the upper end of the distribution shaft 6 causes a plunger 9 to reciprocate via a lever 19, and the plunger 9 transfers the grease 3, which has been force-fed into the application shaft 8 from the quantitative supply device 2, into a predetermined amount. Discharge at the right time.

When the nozzle 12 has rotated about one rotation, the second cam 22 at the lower end, which is provided in phase with the first cam 18 at the upper end, moves the sleeve 10 downward via the lever 23. The sleeve 10 is engaged with a slider 11, and the slider 11 is
The radial position of the nozzle 12 is moved in response to the rotation of the application shaft 8, and the grease 3 is further discharged along the outer circumference of the grease 3 applied in the previous rotation to form a toggle in the recess of the ball joint 13. Apply the coating.

When a predetermined coating operation is completed, the phases of the first cam 18 and the second cam 22 at the upper and lower ends of the distribution shaft 6 change by rotating the coating shaft 8 in the forward or reverse direction, so that the plunger 9 moves upward. do. At this time,
New grease 3 is injected into the coating shaft 8 from the quantitative supply device 2, and the sleeve 10 is also moved upward to restore the positions of the slider 11 and nozzle 12, and stand by in preparation for the next coating operation.

Although this embodiment shows an apparatus for applying grease to a ball joint, it is also possible to apply an agent such as grease to a rotating part such as a shaft, or an apparatus that requires applying an adhesive or the like to a rotating part such as a shaft. Also, the present invention
Applicable.

Further, although the driving means are linked by cams, it is also possible to configure them by a combination of gears, links, etc.

Furthermore, in this example, the head was provided close to and separated from the member to be coated, but on the contrary,
The member to be coated may be provided so as to be close to and separated from the head.

As described above, according to the coating device according to the present invention, the discharging of the coating material, the rotation of the nozzle, and the movement of the nozzle in the radial direction are performed in synchronization. Since the coating agent can be discharged in just the right amount, there is an effect that the coating work can be performed accurately and efficiently with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional explanatory diagram showing an embodiment of a coating device according to the present invention, and FIG.
The line sectional view, FIG. 3, is an explanatory diagram of the operation of FIG. 1. 1...Base body, 2...Quantitative supply device, 3...Grease,
4... Drive source, 5... Application shaft, 6... Distribution shaft, 7... Gear, 8... Application shaft, 9... Plunger, 10... Sleeve, 11... Slider, 12... Nozzle, 13... Ball joint, 14... Drive means , 18...first cam, 22...second cam.

Claims (1)

[Scope of Claims] 1. A coating shaft that is rotatably provided relative to the member to be coated, and a coating shaft that is movable in the radial direction at one end of the coating shaft so as to be close to and close to the member to be coated. A dispensing nozzle for dispensing a dispensing agent provided so as to be separated from the dispensing nozzle and a plunger for discharging a dispensing agent inserted from the other end of the coating shaft operate in cooperation with each other, so that the dispensing nozzle is discharged during the discharge process of the plunger. A coating device comprising: a plunger that is moved away from a member to be coated; and a drive means for driving a discharge nozzle. 2. The coating device according to claim 1, wherein the driving means has a first cam that drives the plunger, and a second cam that drives the discharge nozzle in cooperation with the first cam.