JPS5846310Y2 - Lubricant supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lubricant supply device for appropriately supplying a lubricant such as grease to the sliding surfaces of members that slide on each other.

Generally, a lubricant such as grease is supplied to the sliding surfaces between members that rotate with each other or between members that reciprocate with each other to prevent excessive wear of the members on the sliding surfaces and to ensure that the members are smooth against each other. It is designed to be able to slide.

When multiple sliding surfaces are formed between a pair of members that slide on each other, it is necessary to reliably supply lubricant to each sliding surface to ensure uniform lubrication on each sliding surface. Measures must be taken to avoid shortening the service life of parts due to uneven wear due to uneven wear.

Regarding this point, regarding processing lines such as steel plate pickling lines and coil washing lines, or the case of mandrels that serve as the steel plate winding core of unwinding machines and winding machines installed before and after cold rolling mills. To explain, these mandrels are expandable and retractable in their radial direction to facilitate the attachment and detachment of coils.

That is, the mandrel shaft has a mandrel shaft and a plurality of segments around the mandrel shaft, and the mandrel shaft has a number of flange-shaped wedges with a certain slope formed on the outer peripheral surface in the axial direction. A similar wedge is provided on the inner circumferential surface of each segment, corresponding to the wedge, and formed so that the inclined surfaces are in contact with each other, and by moving the mandrel shaft and the segment relative to each other in the axial direction, both wedges can be The segments move in the radial direction of the mandrel shaft along the inclined surface, allowing the diameter of the mandrel shaft to be expanded or contracted.

In such a segment (K), a greasing hole is drilled from one end face along the axial direction, and a hole is drilled from the greasing hole to each wedge in the radial direction of the mandrel. The opening is formed on an inclined surface that is a sliding surface with the wedge of the shaft.

By injecting a lubricant such as grease into the greasing holes, the lubricant is supplied to each sliding surface through each hole.

In this way, the conventional lubricant supply is configured to be injected at a predetermined pressure from one greasing hole, so the multiple holes at the lubricant supply end prevent the lubricant from getting mixed in. If condensation begins to occur due to impurities present in the lubricant, each company will have different lubricant levels, and each company will not be able to supply lubricant uniformly to the sliding surface.

In addition, the contact condition on the sliding surface may be affected by variations in processing accuracy,
After use for a certain period of time, wear points may be unevenly distributed on each sliding surface.

In other words, the lubricant is sent only through the holes where it easily flows out, resulting in uneven lubricant supply, and wear is unevenly distributed in specific parts of the wedge, which is the sliding part between the mandrel shaft and the segment. However, there is a problem in that the normal service life is significantly reduced.

Therefore, in consideration of the above-mentioned conventional problems, the present invention proposes that when a greasing hole is provided with a sliding hole that communicates with a plurality of sliding surfaces,
To properly supply lubricant to the neck hole, and even when the hole begins to clog, lubricant is supplied evenly and with appropriate pressure to maintain an even lubrication state. The purpose of this invention is to provide a lubricant supply device that is capable of

In order to achieve the above object, a lubricant supply device according to the present invention includes a greasing hole formed in one side of a member having a plurality of sliding surfaces and sliding on each other; In the device having a plurality of communicating holes opening on each sliding surface between the members, and supplying lubricant from the greasing hole to the sliding surface via the communicating hole, the greasing hole has a plurality of communicating holes. A distribution shaft that divides the inside of the grease hole into a plurality of chambers by a narrow-diameter stepped portion, a recessed portion, etc. is inserted, and this distribution shaft is formed with at least a groove that independently communicates with the divided chambers to supply lubricant to each divided chamber. It is configured to be able to be supplied.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, in the case where it is installed in a steel plate processing line and used as a mandrel of a winder that winds a steel plate into a coil.

As shown in FIG. 1, a mandrel 1 of a winding machine includes a mandrel shaft 2 which is a core, and a plurality of divided segments 3 are arranged around the mandrel shaft 2 in the axial direction. There is.

The outer circumferential surface of the mandrel shaft 2 has an inclined surface 4a in a fixed direction in the axial direction thereof, and a plurality of wedges 4 protruding in the circumferential direction are formed.

In addition, on the inner circumferential surface of the segment 3 disposed around the mandrel shaft 2, a plurality of wedges 5, which correspond to the wedges 4 of the mandrel shaft 2 and similarly have a fixed direction and an inclined surface 5a, are formed. ing.

Both the mandrel shaft 2 and the segment 3 are in contact with each other over the inclined surfaces 4a and 5a of the wedges 4 and 5, and by relatively moving the mandrel shaft 2 and the segment 3 in the axial direction, the segment 3 is tilted. Surfaces 4a and 5a allow movement in the radial direction.

By this movement of the segments 3, the mandrel 2 expands and contracts in the radial direction, making it easy to attach and detach the coil.

From one end surface of segment 3, there is a zero point directly below wedge 5.
Two parallel greasing holes 6 are bored in the longitudinal direction so as to be located in the vicinity of the other end face of the casing.

As shown in FIG. 4, injection holes 6b are formed at the bottoms of the greasing holes 6 in the transverse direction.

A plurality of communication holes 7 are opened from the greasing hole 6 to the inclined surface 5a of the wedge 5, corresponding to each wedge 5.

Therefore, the opening 6a (I''i) of the greasing hole 6 is in communication with the plurality of communication holes 7 and the injection hole 6b, respectively.

Inside this greasing hole 6, the greasing hole 6 is divided into three chambers 8°9.10.
A distribution shaft 11 that divides into two is inserted.

As shown in FIG. 6, the distribution shaft 11 has a tip portion 11a that comes into close contact with the greasing hole 6, a step portion 11b that is narrower in diameter than the greasing hole 6, and a step portion 11b that can come into close contact with the tip portion 11a, but has a plurality of parts. Concave part 1
1c, and a flange 11d is formed on the end face of the inlet.

The 7-lunge 11dK has two injection ports 12a. 12b is provided.

The injection port 12a communicates with an upper groove 13 that connects the recessed portions 11c and forms a chamber 10 between the greasing hole 6 and the recessed portion 11c.

Further, the injection port 12b communicates with a lower groove 14 that is connected to a stepped portion 11b that forms a chamber 9 with the greasing hole 6.

This distribution shaft 11b is inserted into the greasing hole 6, is attached to the opening 6a by the flange 11d, and is attached to the recessed part 1.
1c respectively correspond to the communicating holes 7 located on the side of the opening 6a, and the stepped portions 11b correspond to the recessed portions 11.
Corresponding to the communication hole 7 adjacent to the communication hole 7 facing c, the inlets 12a,
12b.

Further, the tip portion 11a of the distribution shaft 11 is configured to communicate only with the communication hole 7 (ri) in the divided chamber 8, and the injection hole 6b formed at the bottom of the greasing hole 6.

Note that 15 in the figure indicates metal.

The lubricant supply device configured in this manner can supply lubricant to each of the chambers 8, 9, and 10 divided by the distribution shaft 11.

That is, the lubricant injected from the injection port 12a on the side of the opening 6a passes through the upper groove 13, spreads to each concave portion 11c, and is supplied to each communication hole 7 corresponding to the concave portion 11c.

Furthermore, the lubricant injected from the injection port 12b is transferred to the lower groove 14.
is sent to the chamber 9 formed by the stepped portion 11b through the chamber 9.
The lubricant is supplied to the communicating hole 7 corresponding to the .

The lubricant injected from the injection hole 6b formed at the other end of the twisted segment 3 fills the chamber B, and the lubricant is supplied only to the communication hole 7 corresponding to the chamber 8.

In this way, when supplying lubricant to each of the plurality of communicating holes provided in the greasing hole 6, the greasing hole 6 is divided into a plurality of chambers using the distribution shaft 11, and lubricant is supplied to each divided chamber. This makes it possible to supply lubricant independently to each chamber.

Therefore, even if the communication hole 7 starts to become clogged, it will not affect the communication holes 7 in other chambers, and therefore, the lubricant will be uniformly supplied to the sliding surfaces. be converted into

In the binding and sliding parts, it is possible to prevent a decrease in the service life of the members due to uneven wear.

In addition, in the case of the above embodiment, one chamber 8 divided into three
Inlet 12a of distribution shaft 11 > 12
Although the injection hole 6a is provided separately instead of from the injection hole 6a, a through hole penetrating the chamber 8 may be provided in the center of the distribution shaft 11, and the injection may be made through that hole.

As described above, the lubricant supply device according to the present invention divides a greasing hole having a large number of communication holes into a plurality of chambers by a distribution shaft, and supplies lubricant independently to each communication hole corresponding to each chamber. As a result, the unevenness of lubricant supply is improved, and as a result, uneven wear such as uneven wear of sliding members is prevented, and problems with roundness and maintenance of parts are improved. It is something that

[Brief explanation of drawings]

The drawings show an embodiment of the lubricant supply device according to the present invention, and FIG. 1 is a partial sectional view of a mandrel using the lubricant supply device, FIG. 2 is an enlarged sectional view of the same portion, and FIG. 3 is an enlarged sectional view of a segment of the same mandrel, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is an enlarged partial view of the end of FIG. 3, and FIG. The front view of the shaft, Figure 7, is
6 is a cross-sectional view taken along the line ■-■, and FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. 1... Mandrel, 2... Mandrel shaft, 3... Segment, 4, 5...
... Wedge, 6... Greasing hole, 7...
Communication hole, 8, 9, 10... chamber, 11...
・Distribution axis.

Claims (1)

[Scope of utility model registration request] A greasing hole formed in one of the members having a plurality of sliding surfaces and sliding on each other, and a plurality of communication holes opening from the greasing hole to each sliding surface between the members. In the device for supplying lubricant from the greasing hole to the sliding surface through the communication hole, the greasing hole is divided into a plurality of chambers by a narrow step, a recess, etc. A lubricant supply device in which a distribution shaft is inserted, and the distribution shaft is formed with at least a groove that independently communicates with the divided chambers to supply lubricant to each divided chamber.