JPH0535276Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a grease application device for applying grease to contact areas between members to maintain smooth mechanical operation at the contact areas. In particular, it relates to a device that can apply a fixed amount of grease whose components are easy to separate and have a high consistency.

(Prior Art) Conventionally, it has been widely used in various fields to interpose a lubricating means such as grease at a contact site between mechanical members, such as a sliding part or a bearing part. Since this grease is generally highly viscous and relatively difficult to apply in a desired amount to a desired location, devices using various methods are employed.

For example, in a device that applies a fixed amount of grease to the spindle of a rotating roller for guiding the tape running of a magnetic tape cassette, the entire system from the grease storage container to the application head is constructed in a sealed structure, and the grease is applied to the application head. There is a structure in which the grease is discharged from the head by the pressing force of a push-out pin that enters the grease pool in the head. Furthermore, in JP-A-63-172091, grease is stored in an open type container, and a grease application means is immersed in the grease in the container and then pulled out to remove the grease attached to the application means. A configuration in which the fuel is supplied to a support shaft is disclosed.

(Problem to be solved by the invention) However, in the former closed system, air gets mixed into the closed system, which should originally be filled only with grease, when replenishing the storage container with grease or replacing the grease. Resulting in. For this reason, although removal valves and other devices are installed in some parts of the oil delivery system to remove the air-mixed grease, it is difficult to completely remove the air-mixed grease, and as a result, the air that cannot be removed is The grease was discharged from the nozzle, causing variations in the amount of grease supplied.

In addition, some greases have a tendency to separate into solid components and oil components, and in such cases, the separated grease is applied in a closed system, causing the original grease to disappear. It becomes impossible to exert its effect at all. In addition, the oil component leaks from the closed system and adheres to areas other than the area to be coated, such as the lower half of the magnetic tape cassette, causing trouble. Furthermore, since grease has a certain degree of viscosity, it tends to remain on the tip of the coating nozzle, and in particular, in the device with the above configuration, the grease that remains without being coated on the object to be coated gradually adheres to the tip of the nozzle. For example, when a certain amount of residual grease has accumulated, a situation arises in which the remaining grease is supplied to the object at once, resulting in a problem that a stable coating amount cannot be guaranteed.

On the other hand, in the latter device using an open container, in order to maintain a constant amount of grease adhering to the application means each time a coating is applied, a stirring member and a smoothing member are applied to the grease surface of the rotating container. level the surface of the grease. However, if the consistency of the grease used is high, the following situations may occur.
In other words, the unevenness caused on the grease surface by the stirring member cannot be smoothed out by the smooth member disposed downstream of the stirring member, and the grease adheres to the coating member that is dipped for the next application. Make the quantity unstable. As a result, it became impossible to apply a fixed amount of grease to the object to be coated.

Further, in order to increase the stirring effect, the stirring member has a substantially hoe-shaped lower side to plough the grease. If it coincides with the hoe-shaped non-toothed part, the concave part caused by the immersion of the coating means will pass through the stirring member, and will also remain on the downstream smooth member without being completely smoothed. . As a result, the amount of grease deposited on the coating member that is dipped for the next coating was extremely reduced, and the amount of grease coated on the object to be coated was reduced.

(Purpose of the invention) This invention solves the various problems mentioned above,
Even if the consistency of the applied grease is particularly high,
The object of the present invention is to provide a grease application device that can guarantee stable quantitative application.

(Means for Solving the Problems) The above object of the present invention is to provide a release type storage means that stores grease and rotates along the horizontal direction, and a storage means arranged outward from the center of rotation of the storage means. a generally plate-shaped stirring means for stirring the grease in the storage means; a smoothing means for smoothing the grease surface located downstream of the stirring means; and a smoothing means for smoothing the grease surface by being immersed in the smoothed grease. In a grease application apparatus that applies a fixed amount of grease adhering to the application means to an object to be coated, the agitation means applies a immersion trace caused by immersion of the application means. It has a concave notch that can raise the grease level at a position corresponding to the matching grease surface, and in order to flow the grease in the direction of the notch, the portion extending from the notch to both left and right ends is the storage area. This is achieved by means of a greasing device characterized in that it is inclined in a leading direction in a direction opposite to the rotation of the means.

An embodiment of the present invention will be described below.
FIG. 1 is a schematic diagram of the apparatus of the present invention, and FIGS. 2 and 3 are partial perspective views of the apparatus shown in FIG.

As shown in FIGS. 1 and 2, the apparatus of this embodiment includes grease 20 stored in a grease pan 5.
is applied onto a spindle 14 (a spindle of a rotating roller that guides tape travel) provided on the lower half 13 of the magnetic tape cassette by the movement of the coating head 1.

The grease pan 5, which is a storage means for the grease 20, is configured to rotate itself while containing the grease 20. That is, the grease pan 5 has, for example, the rotary support shaft 5a extending downward from the pan on its bottom surface, and the rotary support shaft 5a is provided with a pulley 5b, and the driving force of the motor 11 is applied via the belt 12. configured to be transmitted. Incidentally, it goes without saying that the grease pan 5 is rotatably held, for example, by a suitable pedestal 8 at its rotational support shaft 5a.

Further, in the grease pan 5, a stirring member 6 for stirring the grease 20 and a smoothing member 7 for smoothing the surface of the grease are provided.

The stirring member 6 has a substantially plate shape and is arranged outward from the center of rotation of the grease pan 5, so that the surface of the grease 20 can be effectively stirred by the rotation of the grease pan 5. , is fixed by a holding portion 9 so that its lower end 6a is slightly embedded in the grease. Furthermore,
As shown in FIG. 3, the stirring member 6 is bent into an arc so that its lower end 6a is turned upward along the rotational direction of the grease pan 5 (direction indicated by arrow X in the figure). and the lower end 6a
A notch 6b is formed in. The notch 6b
is a position corresponding to the immersion mark formed on the grease surface by dipping the coating head 1 into the grease, which will be described later, that is, the immersion mark reaches the surface of the stirring member 6 due to rotation of the grease pan 5. They are provided corresponding to the positions and are cut out to a depth exposed from the grease surface. Further, the stirring member 6 is positioned closer to the grease pan 5 than the notch 6b.
A portion 6c near the center of rotation of the grease pan 5
A curved shape, facing in the direction opposite to the rotation of
In other words, the grease 20 fills the notch 6.
It has a curved shape that flows towards the point b.

Like the stirring member 6, the smooth member 7 has a substantially plate shape disposed outward from the center of rotation of the grease pan 5, is located on the downstream side of the stirring member 6, and is at least flat. The holding portion 10 is inclined as appropriate so that the lower edge 7a is in contact with the surface (liquid level) of the grease 20, and one side edge 7a is in line contact with the inner wall surface of the grease pan 5. It is supported to do so.

The smooth member 7 is in contact with the surface of the grease 20 so that the surface of the grease 20 can be smoothed, and its position is fixed by the holding part 10. 6, even if it is fixed, the grease pan is raised as the grease decreases, so that the relative positional relationship with the grease is kept constant, and the amount of the application head 1 immersed in the grease is kept constant. The configuration is such that Further, the smooth member 7 is coated with the grease 20.
It may be configured such that it can move up and down in accordance with the amount of storage.

The application head 1 is operated by, for example, a PP unit (Pickup & Place unit),
The grease 20 in the grease pan 5 is applied to the support shaft 14. As shown in FIG. 6, the structure of the coating head 1 is such that a head body 15 is held on the PP unit via, for example, an arm 3, and the head body 15 has the above-mentioned coatings extending diagonally downward. A coating pin 2 is provided. The head body 15 is mounted so that it can be rotated and positioned as appropriate using the arm 3 as a fulcrum, and the upper part of the head body 15 is biased diagonally to the right in the figure by a tension spring 4. ing.
Note that the coating head 1 is normally located appropriately above the grease pan 5.

The above coating head 1 is equipped with a PP unit.
For example, the lower half 13 on a pallet is moved in time with the transport. This movement first descends toward the grease pan 5 (in the direction of arrow A) and descends to a position where the applicator pin 2 enters the grease 20, thereby depositing the grease 20 on the tip of the pin. The location where the application pin 2 enters into the grease 20 is where the surface of the grease is made flat by the smooth member 7. After that, it rises again, but for example, it rises to a position corresponding to the vicinity of the base of the support shaft 14, and continues to rise to a position corresponding to the vicinity of the base of the support shaft 14.
Move forward toward (arrow B). After the tip of the coating pin 2 advances to the point where it touches the support shaft 14,
With the tip of the pin in contact with the support shaft 14, it is appropriately raised (arrow C). At this time, the grease 20 attached to the tip of the pin is applied to the support shaft 14, but the contact pressure between the application pin 2 and the support shaft 14 is adjusted as appropriate by the tension spring 4. This ensures reliable application of the grease 20. After rising along the support shaft 14, the coating head 1 continues to move up the support shaft 14.
Move back away from 4 (arrow D) and return to the standby position. Automatic application of the grease 20 is performed by repeating such a movement cycle in accordance with the lower halves 13 that are conveyed one after another. At that time, the grease 2 is applied by dipping the application pin 2.
The immersion trace portion of the coating pin 2 formed on the zero surface passes through the notch 6b of the stirring member 6. On the other hand, the grease 20 in the portion excluding the immersion trace is pressed evenly by contacting the lower end 6a of the stirring member 6, and is scraped up to the center of the stirring member 6 by the curved portion 6c, and The hollow of the part is filled. As a result, there is no immersion trace, and the grease that has passed through the stirring member 6 reaches the smooth member 7 in a substantially flat state. Therefore, even if a highly viscous grease is used, the grease can be completely flattened.

In the embodiment described above, it goes without saying that the number of the coating heads 1 is not limited to one, but may be plural, and the configuration is not limited to that shown in the drawings, but may be modified as necessary. Of course, various changes can be made. Furthermore, it goes without saying that the configuration, including, for example, the method of driving the grease pan 5, the number of the stirring members 6 and the smooth members 7, and their holding structures can be changed as appropriate.

Further, the amount of the grease 20 to be applied may be determined by, for example, the shape of the tip of the coating pin 2, the pin material, the inclination angle, the degree of penetration of the coating pin 2 into the grease 20, the contact with the support shaft 14, etc. It changes slightly depending on time, the viscosity of the grease 20, etc., and can be adjusted as appropriate based on these conditions.

According to the above-described apparatus, the grease 20 can be applied extremely well. The first reason is that the grease 20 stored in the grease pan 5 has a dropping point of about 180°C, a consistency of 325, and
It maintains appropriate viscosity even at extremely low temperatures (approximately -57℃) and can be used over a wide range of temperatures, but if left for a long time without stirring, the solid and oil components will separate. Although it is easy to
Since the grease 20 that adheres to the application pin 2 is constantly stirred by the agitating member 6 and the grease surface is smoothed by the agitating member 6 and the smoothing member 7 at the entry area of the application pin 2, the grease 20 adheres to the application pin 2. The original tissue quality is maintained and the amount of adhesion is kept stable. In addition, since the part for storing the grease 20 and the liquid delivery system are open systems, it is extremely easy to replace and replenish the grease.Furthermore, the equipment is easy to maintain, and fine adjustments can be made to ensure good grease application. can do.

FIG. 4 shows a stirring member according to another embodiment of the present invention.

This stirring member 60 has almost the same shape as the one shown in FIG. 3, and therefore, the same elements are given the same reference numerals and the explanation thereof will be omitted.

The stirring member 60 has a surface opposite to the rotation of the grease pan,
In addition, an eave-like piece 6d is provided that slightly protrudes along the grease surface. Further, the height of the piece 6d is located at a position approximately corresponding to the grease surface.

By forming the piece 6d like this,
The grease pressed by the lower end 6a of the agitation member 60 and pushed upward by the passage of the member 60 comes into contact with the lower surface (the surface corresponding to the grease) of the piece 6d, and unnecessary build-up of the grease is prevented. Ru.

FIG. 5 shows a modification of the smooth member.

This smooth member 70 is provided substantially perpendicular to the grease surface, and its lower end 7a is bent in a curved manner in the direction along the flow of the grease, like the aforementioned stirring members 6, 60. Also,
A piece 7c having substantially the same effect as the piece 6d of the stirring member 60 described in FIG. 4 is also provided on the side facing the rotation of the grease pan. The piece 7c is slightly curved upward, so that it can act to effectively press the grease surface from above against the grease flowing toward the smooth member 70 and press the grease surface from above. 7
It can be easily introduced into a.

(Effects of the invention) As described above, the present invention constantly stirs and smoothes the surface of grease in an open storage means, and uses a coating pin or the like to apply the stored grease to a desired amount of grease. In a grease application device that applies grease to a desired area, a stirring member is used which has a notch that escapes the immersion traces caused by dipping the application pin, and which agitates other parts except the immersion traces. As a result, the immersion traces are completely eliminated, and sufficient smoothing can be achieved even with particularly highly viscous grease. In addition, by constantly stirring, grease separation does not occur and the quality of the grease used for coating can be maintained at a good level, and the amount of stored grease deposited on the transfer means (for example, the coating pin) can be maintained at a constant level. As a result, high-quality grease can always be applied in a fixed amount.

Furthermore, the grease application device according to the present invention has a simpler structure than conventional closed system devices, and is extremely superior in terms of ease of maintenance.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the grease application device according to the present invention, FIG. 2 is a perspective view of the grease pan shown in FIG. 1, and FIG. 3 is an enlarged perspective view of the stirring member shown in FIG. 1. 4 is a perspective view of a stirring member according to another embodiment, FIG. 5 is a perspective view showing a modification of the smooth member, and FIG. 6 is a perspective view of the coating head shown in FIG. 1. 1...Painting head, 2...Painting pin, 3...Arm, 4...Tension spring, 5...Grease pan, 5
a...Rotation shaft, 5b...Pulley, 6, 60...
... Stirring member, 6a lower end, 6b... Notch, 6c...
...Curved portion, 6d... Piece, 7, 70... Smooth member, 7a... Lower end edge, 7b... Side edge, 7c...
Piece, 8... Frame, 9, 10... Holding part, 11...
Motor, 12...Belt, 13...Lower half, 1
4... Support shaft, 15... Head body, 20... Grease.

Claims (1)

[Scope of utility model registration request] An open storage means that stores grease and rotates in the horizontal direction; and a generally plate-shaped stirring means that is arranged outward from the center of rotation of the storage means and stirs the grease in the storage means. and a smoothing means that is located downstream of the stirring means to smooth the grease surface, and an application means that is immersed in the smoothed grease to apply the grease,
In the grease application device that applies a fixed amount of grease adhered to the application means to the object to be coated, the stirring means applies a grease liquid to a position corresponding to a grease surface that corresponds to a immersion mark created by immersion of the application means. It has a concave notch that allows the surface to be raised, and in order to flow the grease in the direction of the notch, portions extending from the notch to both left and right ends extend in the direction opposite to the rotation of the storage means. A greasing device characterized by being inclined so as to