JP2008025738A - Packaging method and packaging element for bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flaw prevention effect, favorable work efficiency, and inexpensive and competive packaging method. <P>SOLUTION: A cone 1 is comprised of an inner ring 2, a circular roller 3 of a rolling element attached to the inner ring, and a retainer 4 for retaining the circular roller. A cup 5 comprises an outer ring 6. The cone 1 and the cup 5 are respectively covered by covering materials 21, 22 (vinyl), and a cushioning material 20 (kraft paper) is interposed between them. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bearing packing method and a packing body capable of preventing scratches generated on a raceway surface of a cup and a rolling surface of a cone during transportation of a tapered roller bearing, for example.

  For example, when a tapered roller bearing is subjected to vibration or impact during transportation, scratches may occur on the raceway surface of the outer / inner ring and the surface of the rolling element, depending on the packaging specifications, even if it is packed. .

  Also, depending on the magnitude and nature of vibration and impact, damage states such as false brinelling and fretting may occur.

  Generally, when it is necessary to prevent the occurrence of such damage, the following measures are often implemented.

  FIG. 4 is a sectional view of the tapered roller bearing according to the first conventional example in a packed state.

  The cone 1 includes an inner ring 2, a rolling roller tapered roller 3 attached to the inner ring, and a cage 4 for holding the tapered roller. The cup 5 includes an outer ring 6.

  A cushioning material 10 is interposed between the rolling surface of the tapered roller 3 of the cone 1 and the raceway surface of the outer ring 6 of the cup 5. The buffer material 10 is a vinyl, a rubber sheet or the like in the first conventional example.

  FIG. 5 is a sectional view of the tapered roller bearing according to the second conventional example in a packed state.

  The cone 1 includes an inner ring 2, a tapered roller 3, and a cage 4, and the cup 5 includes an outer ring 6. The cone 1 and the cup 5 are separated and individually packed.

  FIG. 6 is a sectional view of the tapered roller bearing according to the third conventional example in a packed state.

  The cone 1 includes an inner ring 2, a tapered roller 3, and a cage 4, and the cup 5 includes an outer ring 6.

  Wrap rubber, paper, vinyl, wire, etc. (11) around several places or around the circumference, and fix the tapered roller 3, outer ring 6, and inner ring 2 so that they do not move. The material is also included.)

  However, the packaging method shown in FIGS. 4 to 6 has the following problems.

1) Although the packing method shown in FIGS. 5 and 6 has an effect of preventing scratches, a lot of cost is required for packing.
2) In the packing method of FIG.5 and FIG.6, since there are many packing processes, an operation process will increase.
3) In the packing method of FIG.4 and FIG.6, durability of a shock absorbing material is low, and depending on the magnitude | size and quality of a vibration and an impact, a shock absorbing material will fracture | rupture and will generate | occur | produce a crack.

  In general, the packing method shown in FIGS. 5 and 6 has a great effect as a measure for preventing scratches, but has a demerit that reduces the efficiency of the packing operation and causes a lot of cost for packing. .

  In addition, as for the packing method of FIG. 4, a buffer material that is durable, oil-resistant, does not affect the bearings with rust, and satisfies a low cost is required. It is very difficult to satisfy everything.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a bearing packing method that has an effect of preventing scratches, has high work efficiency, and can be handled at low cost. And

In order to achieve the above object, a bearing packing method according to the present invention includes a cone comprising an inner ring, a rolling element attached to the inner ring, and a cage for holding the rolling element, In the packing method for bearings composed of outer rings,
The cone and the cup are each covered with a covering material, and a cushioning material is interposed therebetween.

In the bearing packing method according to the present invention, the cone includes an inner ring, a rolling element attached to the inner ring, and a cage for holding the rolling element, and the cup includes a bearing consisting of an outer ring. In the method,
The cup is covered with a covering material, a cushioning material is interposed between the covered cup and the cone, and the whole is covered with an overall covering material.

  According to the present invention, there is an effect of preventing scratches, high work efficiency, low-cost response, and the function of a shock-absorbing material that resists shock and vibration can be realized at low cost. Can also be supported.

  Hereinafter, a bearing packing method according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a cross-sectional view of a tapered roller bearing according to a first embodiment of the present invention in a packed state.

  The cone 1 includes an inner ring 2, a rolling roller tapered roller 3 attached to the inner ring, and a cage 4 for holding the tapered roller. The cup 5 includes an outer ring 6.

  For covering the cone 1 and the cup 5, for example, vinyl bags 21 and 22 large enough to fit the cone 1 and the cup 5 are prepared, and the cone 1 and the cup 5 are placed in these bags. What is necessary is just to push each into the opening part of the center of the cone 1 and the cup 5 by putting the remainder part on the bag opening side.

  Next, the cone 1 covered with the covering material 21 is inserted into the cup 5 covered with the covering material 22.

  At that time, or before insertion, the cushioning material 20 is interposed between the two and sandwiched between them. The cushioning material 20 is preferably an annular plate member made of kraft paper having a radial width such that the raceway surface of the cup 5 and the rolling surface of the cone 1 do not come into direct contact when interposed.

  In the present embodiment, the cushioning material 20, the cup 5, and the cone 1 have a structure in which covering materials 21 and 22 such as vinyl and paper are inserted so as not to directly contact each other.

  By adopting such a structure, it is possible to prevent the buffer material 20 from absorbing rust-preventing oil or from causing a chemical reaction or the like between the buffer material 20 and the rust-preventing oil. Can be prevented. Moreover, it can prevent that rust generate | occur | produces on the buffer material 20 surface by the influence of sodium chloride NaCl etc. which adhered from the operator. Furthermore, it is possible to prevent foreign matters adhering to the buffer material 20 from entering the bearing.

  Next, regarding cushioning materials, low-cost, oil-resistant vinyl and rubber sheets are often used as cushioning materials, but depending on the magnitude of vibration and impact, the contact pressure of the contact area is often seen. It often breaks without being able to withstand.

  Therefore, in the present embodiment, the cushioning material 20 is made of low-cost and more durable kraft paper. By using kraft paper, the function of the cushioning material 20 that is more resistant to shock and vibration than vinyl and rubber sheets can be realized at low cost. In addition, it is possible to deal with complicated shapes, and it is possible to process shapes with good workability. Further, the disposal of the cushioning material 20 can be the same as that of the design box or the like.

  Since the present embodiment is configured as described above, the following effects can be expected.

  Compared to conventional scratch prevention measures that use vinyl or rubber sheets as cushioning materials, packaging specifications that are more resistant to shock and vibration can be realized at low cost. Moreover, it has the same level of rust prevention effect as the conventional method. Furthermore, since the kraft paper similar to the design box is used for the cushioning material 20, the same disposal method as the design box is possible, and no special disposal method is necessary. Further, as compared with the third conventional example of FIG. 6, packing can be performed with a simple work process.

  In addition, as for the buffer material 20, examples of craft paper used for the buffer material 20 include the following.

The thicknesses are 500 g / m ² and 700 g / m ² . The larger the number, the thicker. Select a bearing thickness, thickness that is more suitable for impact and vibration.

  The type of kraft paper is, for example, coated cardboard or silver OX paper (with an oil-resistant coating).

(Second Embodiment)
FIG. 2 is a cross-sectional view of the tapered roller bearing according to the second embodiment of the present invention during packing, and FIG. 3 is a cross-sectional view of the tapered roller bearing according to the second embodiment in the packed state.

  The cone 1 includes an inner ring 2, a rolling roller tapered roller 3 attached to the inner ring, and a cage 4 for holding the tapered roller. The cup 5 includes an outer ring 6.

  In the present embodiment, the annular cup 5 formed by the outer ring 6 is wound with the covering material 31 made of tape-like VCI paper to make a covering cup body.

  On the other hand, a cone 1, which is an assembly composed of an inner ring 2 and a tapered roller 3 as a rolling element mounted on the inner ring 2 via a cage 4, is placed on the work table so as to extend downward. 1 is covered with a synthetic resin sheet 30 such as polyethylene or vinyl from above. The synthetic resin sheet 30 is large enough to surround the cone 1.

  Next, the cushioning material 20 that is an annular plate member large enough to cover the annular upper end surface of the cone 1 placed on the workbench is placed on the synthetic resin sheet 30 from above the annular upper end surface of the cone 1. Cover to cover.

  The covering cup body around which the tape-shaped covering material is wound is externally fitted from above on the synthetic resin sheet / buffer material covering body thus prepared.

  The synthetic resin sheet 30 and the annular cushioning material 20 are interposed between the cup 5 and the cone 1 in the radial direction. In this state, the synthetic resin sheet 30 previously placed on the cone 1 covers the upper part of the central opening of the cone 1 and is stretched at the upper part of the central opening. Insert.

  In this manner, an assembly in which the synthetic resin sheet 30 and the buffer material 20 are sandwiched between the cone 1 and the cup 5 formed of the outer ring 6 around which the VCI paper covering material 31 is wound is formed. The entire covering material 32, which is tape-like VCI paper, is wound in a donut shape to complete the bearing package.

  The buffer material 20 is kraft paper as in the first embodiment, and the covering material 31 and the overall covering material 32 are VCI paper, that is, vaporizable rust-proof paper. In the present embodiment, a synthetic resin sheet 30 is further interposed as a cushioning material between the cone 1 and the cushioning material 20.

  From the above, also in the present embodiment, it is possible to prevent the buffer material 20 from absorbing the rust-preventing oil or to cause a chemical reaction or the like between the buffer material 20 and the rust-preventing oil. It is possible to prevent the deterioration of the function. Moreover, it can prevent that rust generate | occur | produces on the buffer material 20 surface by the influence of sodium chloride NaCl etc. which adhered from the operator. Furthermore, it is possible to prevent foreign matters adhering to the buffer material 20 from entering the bearing.

  In the present embodiment, the cushioning material 20 is more resistant to shock and vibration than vinyl and rubber sheets by using low-cost, more durable kraft paper. Can be realized at low cost. In addition, it is possible to deal with complicated shapes, and it is possible to process shapes with good workability. Further, the disposal of the cushioning material 20 can be the same as that of the design box or the like.

  Other configurations, operations, and effects are the same as those in the above-described embodiment.

  In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.

It is sectional drawing of the packing state of the tapered roller bearing which concerns on 1st Embodiment of this invention. It is sectional drawing at the time of the packing operation | work of the tapered roller bearing which concerns on 2nd Embodiment of this invention. It is sectional drawing of the packing state of the tapered roller bearing which concerns on 2nd Embodiment of this invention. It is sectional drawing of the packing state of the tapered roller bearing which concerns on a 1st prior art example. It is sectional drawing of the packing state of the tapered roller bearing which concerns on a 2nd prior art example. It is sectional drawing of the packing state of the tapered roller bearing which concerns on a 3rd prior art example.

Explanation of symbols

1 Cone 2 Inner ring 3 Tapered roller (rolling element)
4 Cage 5 Cup 6 Outer ring 10 Buffer material 11 Rubber, paper, vinyl, wire, etc. 20 Buffer material (craft paper)
21, 22 Coating material (vinyl etc.)
30 Synthetic resin sheet 31 Coating material (VCI paper)
32 Overall coating (VCI paper)

Claims (8)

The cone is composed of an inner ring, a rolling element mounted on the inner ring, and a cage for holding the rolling element, and the cup is a method for packing a bearing including the outer ring.
A bearing packing method, wherein the cone and the cup are each covered with a covering material, and a cushioning material is interposed therebetween.   The bearing packing method according to claim 1, wherein the covering material is vinyl, and the cushioning material is kraft paper. The cone is composed of an inner ring, a rolling element mounted on the inner ring, and a cage for holding the rolling element, and the cup is a method for packing a bearing including the outer ring.
A bearing packing method, wherein the cup is covered with a covering material, a cushioning material is interposed between the covered cup and the cone, and the whole is covered with an overall covering material.   The bearing packing method according to claim 3, wherein the cushioning material is kraft paper.   The bearing packing method according to claim 4, wherein a synthetic resin sheet is interposed between the cup and the cone in addition to the cushioning material for the kraft paper.   The bearing packing method according to claim 3, wherein the covering material and the overall covering material are VCI paper. A cup consisting of an outer ring having a conical inner peripheral surface;
A cone composed of an inner ring having a conical outer peripheral surface for forming a tapered roller bearing together with the outer ring, and a rolling element held on the outer peripheral surface via a cage;
It consists of a covering material covering each of the cup and the cone,
A bearing package comprising a cup and a cone covered with the covering material fitted and assembled with a cushioning material interposed therebetween. A coated cup body formed by winding an outer ring having a conical inner peripheral surface with a tape-shaped coating material;
An inner ring having a conical outer peripheral surface for forming a tapered roller bearing together with the outer ring, and a cone made of a rolling element held on the outer peripheral surface via a cage,
A bearing packing body, wherein the covering cup body is externally fitted to the cone via a cushioning material, and the covering cup body and the cone are wound in a donut shape with a tape-shaped covering material.

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