一种双列球轴承注脂模具

Abstract

本实用新型涉及一种双列球轴承注脂模具，包括模具体，模具体上设有轴承定位结构和油脂注入通道；轴承定位结构包括由内致外设置的轴承内圈定位槽、保持架定位面、轴承外圈定位环槽，油脂注入通道由依次连通的注油缝隙、储油腔、出油环槽、注脂腔组成，注油缝隙、储油腔、出油环槽、注脂腔从上至下设于模具体中，注油缝隙顶部位于轴承内圈定位槽与保持架定位面之间。本实用新型中保持架密封凸起、轴承外圈密封凸台除了保持注入油脂时的密封还能够直接伸入保持架与轴承外圈之间的间隙中，从而直接将油脂注入轴承内外圈滚道与钢球之间，有效的改善了因油脂未完全注入滚道引起轴承漏脂的现象。

Claims

1. A double row ball bearing grease injection mold comprising a mold body, characterized by, The mold body is provided with a bearing positioning structure and a grease injection channel; the bearing positioning structure includes a bearing inner ring positioning groove (26), a cage positioning surface, and a bearing outer ring positioning ring groove (16) arranged from the inside to the outside; the grease injection channel is composed of an oil injection gap (6), an oil storage cavity (5), an oil outlet ring groove (12), and a grease injection cavity (11) connected in sequence; the oil injection gap (6), the oil storage cavity (5), the oil outlet ring groove (12), and the grease injection cavity (11) are arranged in the mold body from top to bottom; the top of the oil injection gap (6) is located between the bearing inner ring positioning groove (26) and the cage positioning surface.

2. The dual row ball bearing grease injection mold of claim 1, wherein, The mold body adopts a split structure, including an upper mold (2) and a lower mold (1) connected to each other; the upper mold (2) includes an upper mold body, with a bolt hole (22) vertically penetrating through the middle of the upper mold body, and an upper positioning shaft (25) and a lower positioning shaft (21) respectively provided on the upper and lower parts of the upper mold body; an oil storage pedestal (23) is provided in the middle of the upper mold (2), and the bearing inner ring positioning groove (26) is set on the inner side of the top surface of the oil storage pedestal (23), closely attached to the upper positioning shaft (25), and the outer periphery of the upper positioning shaft (25) is the bearing inner ring positioning groove. (26) The inner wall of the oil storage truncated cone (23) is provided with a retainer sealing protrusion (24) at the edge; the top surface of the oil storage truncated cone (23) is the retainer positioning surface; the lower mold (1) includes a lower mold body, and the upper part of the lower mold body is provided with a connected lower mold groove (17), a positioning hole (14) and a threaded hole (13) from top to bottom; the grease injection cavity (11) is located at the lower part of the lower mold body, and the grease injection cavity (11) is connected to the bottom of the lower mold groove (17), and the top of the lower mold groove (17) is provided with a bearing outer ring sealing protrusion (15).

3. The dual row ball bearing grease injection mold of claim 2, wherein, The oil outlet groove (12) is located on the outer periphery of the positioning hole (14) and the threaded hole (13).

4. The dual row ball bearing grease injection mold of claim 2, wherein, The cage sealing protrusion (24) and the bearing outer ring sealing protrusion (15) are annular sharp corners.

5. The dual row ball bearing grease injection mold of claim 2, wherein, The upper mold (2) is fitted together with the lower mold inner positioning hole (14) through the lower positioning shaft (21), and the diameter of the lower positioning shaft (21) is smaller than the diameter of the positioning hole (14). The lower positioning shaft (21) and the positioning hole (14) are in clearance fit. The upper mold (2) and the lower mold (1) are fixed together by bolts (3).

6. The dual row ball bearing grease injection mold of claim 5, wherein, The bolt (3) passes through the bolt hole (22) and is screwed into the threaded hole (13); the bolt hole (22) is a stepped hole with a larger upper part and a smaller lower part. The bolt head (3) is placed on the upper part of the bolt hole (22), and the bolt thread section (3) is accommodated at the lower part of the bolt hole (22).

7. The dual row ball bearing grease injection mold of claim 2, wherein, The height of the lower positioning shaft (21) is greater than the height of the positioning hole (14), and the lower mold groove (17), the oil storage truncated cone (23), and the lower positioning shaft (21) form an oil storage cavity (5).

8. The grease injection mold for double-row ball bearings as described in claim 2, characterized in that, There is an oil injection gap (6) between the outer periphery of the oil storage truncated cone (23) and the inner wall of the lower mold groove (17).

9. The dual row ball bearing grease injection mold of claim 1, wherein, The depth of the bearing inner ring positioning groove (26) is equal to the distance between the bottom of the cage (43) and the end face of the bearing inner ring (41).

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