JP2014117654A - Bearing washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing washing device capable of washing a bearing of an optional size within a predetermined range.SOLUTION: A bearing washing device 10 comprises: a holder 20 for holding an inner ring of a bearing B so that a rotational axis of the bearing B faces to a vertical direction; a rotation driving part 30 for rotating the holder 20 around a rotational axis J1 extending in a vertical direction by using air; spray parts 40U, 40L for spraying air to the bearing B; and a supplying part 50 for supplying cleaning liquid to the bearing B. The holder 20 comprises a base part 210, and a pair of contact members 220a, 220b disposed on the base part 210. The pair of contact members 220a, 220b are inserted into the inner ring and bent, thereby generating force in a direction for pressing and widening the inner ring.

Description

  The present invention relates to a bearing cleaning device for cleaning a hub bearing of an automobile, for example.

Patent Document 1 discloses a bearing cleaning method in which a high-temperature and high-pressure cleaning liquid is jetted as a counterflow from both sides of a side of a bearing while rotating the bearing to remove oil lubricant adhering to the inside and outside of the bearing. Have been described.
In this bearing cleaning method, the bearing is placed on a bearing cradle having substantially the same diameter as the inner ring outer diameter of the bearing and is held by a fixing mechanism.

Further, in Patent Document 2, foreign matters such as machine oils adhering to machine parts such as gears after processing and electrical and electronic parts, chips, chips and the like are removed by injecting cleaning liquid and compressed air. A cleaning device is described.
In this cleaning apparatus, a work holder is configured by projecting a plurality of engagement pieces concentrically on the upper surface of a circular plate. The engaging piece is inserted into the inner diameter of the gear so that the gear is held horizontally. The engaging piece has a stepped outer surface so that it can be inserted into the inner diameter of a gear having a different inner diameter.

JP-A 62-57685 JP 2011-245444 A

Here, in order to clean a bearing of an arbitrary size, it is necessary to prepare a bearing cradle and an engagement piece corresponding to the size in advance.
An object of the present invention is to provide a bearing cleaning device capable of cleaning a bearing of any size within a predetermined range.

A bearing cleaning device according to the present invention that meets the above-described object includes a cage that holds an inner ring of the bearing so that the rotation shaft of the bearing faces in the vertical direction;
A rotation drive unit that rotates the cage around a rotation axis extending in the vertical direction using air;
A blowing part for blowing air onto the bearing;
A supply unit for supplying a cleaning liquid to the bearing,
The retainer includes a base and a pair of contact members provided on the base, and the pair of contact members are inserted into the inner ring and bent to force the inner ring to expand. Is generated.

In the bearing cleaning device according to the present invention,
The blowing part is an upper nozzle part for blowing air from above to the bearing;
A lower nozzle part for blowing air from below to the bearing,
The air blown by the lower nozzle part is preferably air used to drive the rotation drive part.

In the bearing cleaning device according to the present invention,
The upper nozzle part is a first nozzle for blowing air to the inner ring of the bearing;
And a second nozzle for blowing air onto the outer ring of the bearing.

In the bearing cleaning device according to the present invention,
The rotation drive unit includes a fin that rotates by air, and a housing that covers the fin,
The lower nozzle portion is preferably formed as an S trap and communicates with the interior of the housing.

In the bearing cleaning device according to the present invention,
It is preferable that the tip of the lower nozzle portion is rotatable around an axis extending in the vertical direction.

In the bearing cleaning device according to the present invention,
It is preferable that the retainer further includes a support member that is formed with a plurality of holes and supports the bearing in a vertical direction.

In the bearing cleaning device according to the present invention,
The cage, the rotation drive unit, the spraying unit, and the supply unit are housed in a box having a first discharge hole for discharging the cleaning liquid to the outside.
The housing is provided with a second discharge hole in the bottom for discharging the cleaning liquid to the outside, and is fixed to the bottom of the box by a screw at one location, and the box by a magnet at the remaining location. Fixed to the bottom of the
It is preferable that the first discharge hole and the second discharge hole are arranged on a circumference centering on the shaft portion of the screw in plan view.

  In the bearing cleaning device according to any one of claims 1 to 7, since the retainer has a contact member that is inserted into the inner ring and bends to generate a force in a direction of expanding the inner ring, the arbitrary size. The bearings can be cleaned.

  In particular, in the bearing cleaning device according to the second aspect, since the air blown by the lower nozzle portion is air used for driving the rotation driving portion, the air is reused.

  In the bearing cleaning device according to claim 3, the upper nozzle portion includes a first nozzle for blowing air to the inner ring of the bearing and a second nozzle for blowing air to the outer ring of the bearing. The bearing grease can be removed more efficiently.

  In the bearing cleaning device according to the fourth aspect, since the lower nozzle portion is formed as an S trap, the possibility that the cleaning liquid enters the inside of the housing is reduced.

  In the bearing cleaning device according to claim 5, since the tip of the lower nozzle portion is rotatable around an axis extending in the vertical direction, the position of the tip of the lower nozzle portion is adjusted according to the size of the bearing. Can change.

  In the bearing cleaning device according to the sixth aspect, since the plurality of holes are formed in the support member of the cage, the grease that has melted away by the cleaning liquid can be dropped downward.

  In the bearing cleaning device according to claim 7, the screw is loosened, the housing is rotated around the shaft portion of the screw, and the positions of the first discharge hole and the second discharge hole are aligned with each other. The cleaning liquid that enters can be discharged out of the box.

It is a perspective view which shows the bearing cleaning apparatus which concerns on one embodiment of this invention. It is explanatory drawing which looked at the same bearing washing | cleaning apparatus from upper direction. It is explanatory drawing which looked at the same bearing cleaning apparatus from the front. It is explanatory drawing which shows the modification of the 1st and 2nd nozzle of the same bearing washing | cleaning apparatus. It is a perspective view which shows the holder | retainer which the same bearing washing | cleaning apparatus has. (A), (B) is the top view and front view which respectively show the holder | retainer which the same bearing washing | cleaning apparatus has. It is explanatory drawing which shows the lower nozzle part which the same bearing washing | cleaning apparatus has. It is explanatory drawing which shows the fixed state of the housing of the rotational drive part which the same bearing washing | cleaning apparatus has.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In each drawing, portions not related to the description may be omitted.

The bearing cleaning device 10 according to an embodiment of the present invention can remove grease applied to a bearing (for example, a hub bearing of an automobile) B. As shown in FIG. 1, the bearing cleaning device 10 can be used, for example, by being placed in a sink 12 of a so-called parts cleaning machine 100.
The bearing cleaning device 10 includes a metal box 16 provided with a lid 14 that opens and closes at the top.

The box 16 is provided with a first air supply port IN1, a second air supply port IN2, a third air supply port IN30, and an air discharge port OUT1 on one side surface.
Air hoses 18a, 18b, and 18d are connected from the outside to the first air supply port IN1, the second air supply port IN2, and the third air supply port IN30, respectively, and air is supplied thereto.
An air hose 18c is connected to the air discharge port OUT1 from the outside, and the air inside the box body 16 is discharged.

  Further, the box body 16 is provided with a cleaning liquid supply port IN3 (see FIG. 2) on the other side surface. A cleaning liquid supply hose 19 for supplying a cleaning liquid from the outside is connected to the cleaning liquid supply port IN3, and a cleaning liquid for removing grease is supplied.

  Furthermore, the box 16 is provided with a hole H1 (see FIG. 2) and a hole (an example of a first discharge hole) H2 (see FIG. 7) on the bottom surface. From the hole H1 and the hole H2, the cleaning liquid used for cleaning the bearing B is discharged to the outside (for example, the sink 12 of the parts cleaning machine 100). The diameter of the hole H1 is larger than the diameter of the hole H2.

As shown in FIGS. 2 and 3A, the bearing cleaning device 10 further includes a cage 20, a rotation driving unit 30, a spraying unit, and a supply unit 50 inside the box body 16.
The cage 20 can hold the inner ring of the bearing B so that the rotation axis of the bearing B faces the vertical direction. The cage 20 includes a base 210, a pair of contact members 220a and 220b, and a support member 230 (see FIGS. 2 and 3A).

The base 210 is, for example, a columnar shape, and a hole H10 is formed at the center as shown in FIG. The rotation shaft J1 of the rotation driving unit 30 is inserted and fixed in the hole H10.
The pair of contact members 220a and 220b is provided on the outer periphery of the base 210, and is formed by bending a plate-like metal member, as shown in FIGS. 4 and 5A and 5B. Each contact member 220a, 220b extends upward from the outer periphery of the base 210, is folded outward at the top, and extends downward while curving outward. Therefore, the contact members 220a and 220b can bend in the radial direction of the base 210 as shown by the arrows in FIG.

  That is, when the pair of contact members 220a and 220b are inserted into the inner peripheral side of the inner ring of the bearing B, the pair of contact members 220a and 220b bend and generate a force in the direction of expanding the inner ring. The base 210 is held in the radial direction.

  The support member 230 has a circular shape in plan view, and is, for example, a mesh member. The support member 230 is fixed to the bottom surface of the base 210, and the rotation axis J1 passes through the center. The outer diameter of the support member 230 is larger than the outer diameter of the base 210. Therefore, the bearing B into which the pair of contact members 220a and 220b is inserted is placed on the support member 230 and supported in the vertical direction.

As shown in FIG. 3A, the rotation drive unit 30 can rotate the retainer 20 about a rotation axis J1 extending in the vertical direction.
The rotation drive unit 30 includes a fin 310 and a housing 320 that covers the fin 310.
The fin 310 receives air and rotates the rotating shaft J1 with the retainer 20 fixed to the tip.

The housing 320 is, for example, a columnar member in which a space in which the fin 310 is accommodated is formed.
As shown in FIGS. 2 and 3A, an air supply port IN <b> 4 for supplying air to be applied to the fins 310 is provided on the side portion of the housing 320. The air supply port IN4 is connected to the first air supply port IN1 via an air hose AH1. The fin 310 is driven by the air supplied from the air supply port IN4.

Further, as shown in FIG. 2, an air supply port IN <b> 5 for supplying air to be applied to the fins 310 is provided on the side portion of the housing 320. The air supply port IN5 is connected to the third air supply port IN30 via an air hose AH30. The air supplied from the air supply port IN5 impinges on the fin 310 in the opposite direction to the air supplied from the air supply port IN4, so that the fin 310 is prevented from rotating. That is, the air supplied from the air supply port IN5 functions as a brake that stops the rotation of the fin 310.
As shown in FIG. 7, a hole (an example of a second discharge hole) H <b> 320 for discharging the cleaning liquid that has entered the housing 320 is provided at the bottom of the housing 320.

The housing 320 is fixed to the bottom of the box 16 by a screw BLT at a position P1, and is fixed to the bottom of the box 16 by a magnet MG at positions P2 and P3.
Here, in a plan view, the hole H2 and the hole H320 are arranged on a circumference around the shaft portion of the screw BLT. Therefore, by loosening the screw BLT and rotating the housing 320 around the shaft portion of the screw BLT (see arrow X shown in FIG. 7), the hole H2 provided in the box 16 and the housing 320 are provided. The position of the hole H320 can be adjusted.

As shown in FIG. 2 and FIG. 3A, the spray unit has an upper nozzle unit 40U and a lower nozzle unit 40L, and can spray air onto the bearing B.
The upper nozzle portion 40U is connected to the second air supply port IN2 via an air hose AH2, and can blow air onto the bearing B from above.

  Specifically, the upper nozzle portion 40U includes a first nozzle 40a for blowing air onto the inner ring of the bearing B from above, and a second nozzle 40b for blowing air onto the outer ring of the bearing B from above. Yes.

Each of the first nozzle 40a and the second nozzle 40b is provided so as to be rotatable about the axis J2 shown in FIG. 2, and the positions POSa1 and POSa2 of the tip end portions can be adjusted (shown in FIG. 2). See arrow). Further, the vertical positions POSb1 and POSb2 of the first nozzle 40a and the second nozzle 40b can also be adjusted (see arrows shown in FIG. 3A).
Although the first nozzle 40a and the second nozzle 40b are separate from each other, as shown in FIG. 3B, the first nozzle 40a and the second nozzle 40b are respectively provided at the distal end portion of the common pipe portion 42 to which the air hose AH2 is connected. It is also possible to provide 41a and a second nozzle 41b. The position of the pipe portion 42 can be adjusted in the vertical direction (see the arrow shown in FIG. 3B).

The lower nozzle portion 40L can blow air onto the lower surface of the bearing B from below.
The lower nozzle portion 40L extends from the housing 320 and communicates with the inside of the housing 320. Therefore, the air used for driving the rotation drive unit 30 (fin 310) is ejected from the lower nozzle unit 40L.
As shown in FIG. 6, the lower nozzle portion 40L extending upward from the housing 320 is partially bent downward and formed as an S trap. Accordingly, the possibility that the cleaning liquid enters the inside of the housing 320 from the tip of the lower nozzle portion 40L is reduced.
Further, the lower nozzle portion 40L can rotate around an axis J3 extending in the vertical direction through the base end portion, and the position POSc on the circumference around the axis J3 of the distal end portion can be adjusted ( (See arrows shown in FIG. 6).

  As shown in FIGS. 2 and 3A, the supply unit 50 can supply the cleaning liquid to the bearing B through the cleaning liquid supply port IN3. The supply unit 50 is, for example, tubular, and the position POSd of the tip can be adjusted (see the arrow shown in FIG. 3A).

Next, an operation procedure of the bearing cleaning device 10 will be described.
(Step S1)
First, the operator sets the bearing B on the cage 20. When the bearing B is set in the cage 20, the pair of contact members 220 a and 220 b are bent, and the bearing B is held in the radial direction of the base 210. The bearing B is placed on the support member 230 and supported in the vertical direction. Since the support member 230 has, for example, a mesh shape, accumulation of grease that has melted away by the cleaning liquid is suppressed.

(Step S2)
Next, the operator adjusts the position of the upper nozzle portion 40U (first and second nozzles 40a and 40b) according to the set bearing B (see the arrows shown in FIGS. 2 and 3A). Further, the operator rotates the lower nozzle portion 40L around the axis J3 to adjust the position (see the arrow shown in FIG. 6). Further, the operator adjusts the position of the tip of the supply unit 50 (see the arrow shown in FIG. 3A).

(Step S3)
Next, the operator closes the lid 14 (see FIG. 1) of the box 16. By closing the lid 14 of the box 16, it is possible to prevent the cleaning liquid from being scattered during the operation of the bearing cleaning device 10.

(Step S4)
Next, the operator supplies air to the bearing cleaning device 10 through the first air supply port IN1 (see FIG. 3A) and the second air supply port IN2.
From the air supply port IN4 of the housing 320 connected to the first air supply port IN1, air blows into the housing 320, and the fin 310 rotates. As a result, the bearing B held by the cage 20 rotates around the rotation axis J1.

Air spouts out toward the bearing B from the upper nozzle portion 40U connected to the second air supply port IN2. More specifically, air is blown from above to the inner ring mainly by the first nozzle 40a. In addition, air is blown onto the outer ring mainly from the second nozzle 40b. Therefore, the grease of the bearing B is removed more efficiently.
Further, the air used for driving the rotary drive unit 30 from below is reused and sprayed onto the bearing B by the lower nozzle portion 40L.

(Step S5)
Next, the operator supplies the cleaning liquid to the bearing cleaning device 10 through the cleaning liquid supply port IN3. The cleaning liquid is supplied to the bearing B located below from the supply unit 50 connected to the cleaning liquid supply port IN3.

As a result of executing Steps S1 to S5, the cleaning liquid is supplied to the rotating bearing B, and air is blown from above and below the bearing B by the upper nozzle portion 40U and the lower nozzle portion 40L, respectively. The grease is removed.
The air ejected from the upper nozzle portion 40U and the lower nozzle portion 40L is discharged from the air discharge port OUT1 together with the cleaning liquid and the splash of grease generated as the bearing B rotates.

(Step S6)
The operator stops air supply from the first air supply port IN1 (see FIG. 3A) and the second air supply port IN2, and supplies air through the third air supply port IN30.
From the air supply port IN5 of the housing 320 connected to the third air supply port IN30, air blows into the housing 320 and stops the fins 310.
In this way, by supplying air through the air supply port IN5, the rotation of the fin 310 can be stopped in a short time, so that the work time required for cleaning the bearing B is shortened.

  Thus, according to the bearing cleaning device 10, the cage 20 has a pair of contact members 220 a and 220 b that generate force in a direction of expanding the inner ring by being inserted and bent on the inner peripheral side of the inner ring. Therefore, the bearing B of any size can be cleaned.

  As described above, since the lower nozzle portion 40L is formed as an S trap, the possibility that the cleaning liquid enters the inside of the housing 320 is reduced. However, when the cleaning liquid enters the housing 320, the screw BLT is loosened, the housing 320 is rotated around the shaft portion of the screw BLT, and the positions of the hole H2 and the hole H320 are aligned. The cleaning liquid that has entered inside can be discharged.

  The present invention is not limited to the above-described embodiment, and modifications can be made without changing the gist of the present invention. For example, a case where the invention is configured by combining some or all of the above-described embodiments and modifications is also included in the technical scope of the present invention.

The support member 230 does not have to have a mesh shape, and it is only necessary to form a plurality of holes for dropping the grease that has melted away by the cleaning liquid.
Moreover, in the operation procedure of the bearing cleaning device 10 described above, each procedure can be appropriately replaced. For example, step S4 and step S5 can be exchanged and executed.
Further, in the above-described embodiment, the operator manually performs steps S4 to S6 of the operation procedure of the bearing cleaning device 10. However, it is also possible to automatically perform steps S4 to S6 by providing a control device (not shown) and controlling the electromagnetic valve provided in the flow path of each air or cleaning liquid, for example.
In addition, the air supplied from the air supply port IN5 of the housing 320 can be used to drive the fins 310, and the bearing B can be rotated in the opposite direction to the above-described embodiment. In this case, it is also possible to stop the fin 310 using the air supplied from the air supply port IN4.

10: Bearing cleaning device, 12: Sink, 14: Lid, 16: Box, 18a, 18b, 18c, 18d: Air hose, 19: Cleaning liquid supply hose, 20: Cage, 30: Rotation drive unit, 40L: Lower side Nozzle part, 40U: upper nozzle part, 40a: first nozzle, 40b: second nozzle, 41a: first nozzle, 41b: second nozzle, 42: pipe part, 50: supply part, 100: parts Washing machine, 210: base, 220a, 220b: contact member, 230: support member, 310: fin, 320: housing, AH1, AH2, AH30: air hose, B: bearing, BLT: screw, H1: hole, H2: hole , H10: hole, H320: hole, IN1: first air supply port, IN2: second air supply port, IN3: cleaning liquid supply port, IN4, IN5: air supply port, IN30: 3 of the air supply port, J1: rotary shaft, J2, J3: Axis, MG: magnet, OUT1: air discharge port

Claims (7)

A cage for holding the inner ring of the bearing so that the rotation axis of the bearing faces in the vertical direction;
A rotation drive unit that rotates the cage around a rotation axis extending in the vertical direction using air;
A blowing part for blowing air onto the bearing;
A supply unit for supplying a cleaning liquid to the bearing,
The retainer includes a base and a pair of contact members provided on the base, and the pair of contact members are inserted into the inner ring and bent to force the inner ring to expand. Bearing cleaning device that generates. The bearing cleaning device according to claim 1,
The blowing part is an upper nozzle part for blowing air from above to the bearing;
A lower nozzle part for blowing air from below to the bearing,
The bearing cleaning device, wherein the air blown by the lower nozzle portion is air used for driving the rotation driving portion. The bearing cleaning device according to claim 2,
The upper nozzle part is a first nozzle for blowing air to the inner ring of the bearing;
And a second nozzle for blowing air onto the outer ring of the bearing. In the bearing cleaning device according to claim 2 or 3,
The rotation drive unit includes a fin that rotates by air, and a housing that covers the fin,
The lower nozzle portion is formed as an S trap and is a bearing cleaning device that communicates with the inside of the housing. The bearing cleaning device according to claim 4,
A bearing cleaning device in which a tip portion of the lower nozzle portion is rotatable around an axis extending in a vertical direction. In the bearing cleaning device according to claim 4 or 5,
The retainer is a bearing cleaning device further including a support member having a plurality of holes formed therein and supporting the bearing in a vertical direction. The bearing cleaning device according to claim 6,
The cage, the rotation drive unit, the spraying unit, and the supply unit are housed in a box having a first discharge hole for discharging the cleaning liquid to the outside.
The housing is provided with a second discharge hole in the bottom for discharging the cleaning liquid to the outside, and is fixed to the bottom of the box by a screw at one location, and the box by a magnet at the remaining location. Fixed to the bottom of the
A bearing cleaning device in which the first discharge hole and the second discharge hole are arranged on a circumference centering on a shaft portion of the screw in plan view.

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