A floating bearing for lithium battery winding head

Abstract

A floating bearing for a lithium battery winding head relates to a lithium battery winding head bearing, wherein the other side of a plurality of arc blocks A (6) extends into a gap between a plurality of arc blocks B (8), and the other side of a plurality of arc blocks B (8) extends into a gap between a plurality of arc blocks A (6). A spring (7) is provided between an inner ring A (1) and an inner ring B (9), and the inner ring is arranged inside an outer ring (15) in a manner that a plurality of spherical rollers B (11) are in contact with an arc transition (16). The present invention provides a ball bearing with an outer ring in an angular contact form and an inner ring in an interlaced plug-in structure, so that only half of the balls bear the outer ring under normal working conditions to achieve light operation. The spring provided in the present invention can effectively eliminate the damage to the bearing caused by the distortion of the inner and outer rings of the bearing after the traditional bearing is offset, and when the sliding is too large, the other half of the balls also contact the outer ring to ensure the purpose of offset limitation and stable operation.

Description

Technical Field

[0001] The invention relates to a lithium battery winding head bearing, in particular to a floating bearing used for a lithium battery winding head. Background Art

[0002] The power battery winding machine is a lithium battery manufacturing equipment used to wind the diaphragm and the pole piece into a bare battery cell. The power battery winding machine is composed of many components and devices, and the most important component is the winding head. The winding head not only integrates the winding needle, station change, winding needle rotation, winding needle extension and other mechanisms, but also cooperates with the adhesive tape mechanism, unloading mechanism and other actions to complete various processes. Therefore, the winding head is the most important component that directly affects the battery cell forming. In order to ensure the smoothness of the winding head winding the battery cell, the winding head needs a bearing to provide continuous and stable rotation. The number of balls in the traditional lithium battery winding head ball bearing is constant. Since the lithium battery winding head needs to bear a small radial pressure, too many balls can easily cause the lithium battery winding head to rotate not light enough. Moreover, although the ball bearing ensures the stable rotation of the lithium battery winding head, the lithium battery winding head is prone to swing and slide when the battery cell is wound, which can easily cause the disadvantage of eccentric rotation of the ball bearing due to swinging and sliding. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a floating bearing for a lithium battery winding head. By setting the outer ring of the ball bearing to an angular contact form and the inner ring to a staggered plug-in structure, it is achieved that under normal working conditions, only half of the balls bear the outer ring to achieve light operation. When the lithium battery winding head undergoes a slight lateral sliding, the spring provided in the present invention can effectively eliminate the damage to the bearing caused by the distortion of the inner and outer rings of the traditional bearing after the offset of the bearing, and when the sliding is too large, the other half of the balls also contact the outer ring to ensure the purpose of limiting the offset and stable operation.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0005] A floating bearing for a lithium battery winding head comprises an inner ring and an outer ring, wherein the inner wall of the outer ring is necked on one side and necked on the other side, a retaining ring is provided at the necked end of the inner wall of the outer ring, and an arc-shaped transition is provided between the retaining ring and the inner wall of the outer ring, the inner ring comprises an inner ring A and an inner ring B, a plurality of arc-shaped blocks A are provided on the inner ring outer wall A of the inner ring A, one side of which is flush with one end face of the inner ring A and the other side protrudes from the other end face of the inner ring A, a ball socket A is provided on the outer edge surface of each arc-shaped block A, a spherical roller A capable of rolling is embedded in each ball socket A, a plurality of arc-shaped blocks B are provided on the inner ring outer wall B of the inner ring B, one side of which is flush with one end face of the inner ring B and the other side protrudes from the other end face of the inner ring B, and a ball socket B is provided on the outer edge surface of each arc-shaped block B A spherical roller B capable of rolling is provided in each ball socket B, the other end face of the inner ring A is adjacent to the other end face of the inner ring B, the other side of the plurality of arc blocks A extends into the gap between the plurality of arc blocks B, the other side of the plurality of arc blocks B extends into the gap between the plurality of arc blocks A, a spring is provided between the inner ring A and the inner ring B, the inner ring is placed in the outer ring in such a manner that the plurality of spherical rollers B are in contact with the arc transition, the plane where the plurality of spherical rollers A are located is not in the same plane as the plane where the plurality of spherical rollers B are located, the plane where the plurality of spherical rollers A are located can be in the same plane as the plurality of spherical rollers B after the spring is contracted, the diameter of the inner ring inner wall A provided on the inner ring A is smaller than the diameter of the inner ring inner wall B provided on the inner ring B.

[0006] The floating bearing for the lithium battery winding head is provided with a ring groove A on the other end face of the inner ring A, and a ring groove B on the other end face of the inner ring B. One end of the spring is fixedly connected to the bottom of the ring groove A, and the other end of the spring is fixedly connected to the bottom of the ring groove B. The side wall of the spring and the side wall of the ring groove A and the side wall of the ring groove B are all clearance-fitted.

[0007] In the floating bearing for the lithium battery winding head, more than half of the spherical roller A is located in the ball socket A, and the diameter of the mouth of the ball socket A is smaller than the diameter of the spherical roller A.

[0008] In the floating bearing for the lithium battery winding head, the outer diameters of the spherical roller A after being installed in the ball socket A and the spherical roller B after being installed in the ball socket B are the same.

[0009] In the floating bearing for the lithium battery winding head, the inner ring B is located inside the outer ring and one end surface of the inner ring A does not exceed the expanded neck end of the outer ring.

[0010] In the floating bearing for the lithium battery winding head, the diameter of the spherical roller A is the same as the diameter of the spherical roller B.

[0011] In the floating bearing for the lithium battery winding head, each arc block A and each arc block B are respectively clearance-fitted.

[0012] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0013] The floating bearing for a lithium battery winding head described in the present invention, by setting the outer ring of the ball bearing to an angular contact form and the inner ring to an interlaced plug-in structure, achieves light operation with only half of the balls bearing the outer ring under normal working conditions. When the lithium battery winding head undergoes a slight lateral sliding, the spring provided in the present invention can effectively eliminate the damage to the bearing caused by the distortion of the inner and outer rings of the bearing after the traditional bearing is offset, and when the sliding is too large, the other half of the balls also contact the outer ring to ensure the purpose of limiting the offset and stable operation. The present invention has a simple and reasonable structure, good use effect, a wide range of applications, is easy to operate, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0015] Figure 2 for Figure 1 A half-section view of

[0016] Figure 3 It is a schematic diagram of the structure of the spherical roller B and the arc-shaped transition contact of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the spherical roller A and the ball socket A of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure when the two present inventions are used together;

[0019] Figure 6 This is a schematic structural diagram of the case where a plurality of spherical rollers A and a plurality of spherical rollers B are in the same plane after the spring is compressed when the present invention is used;

[0020] Figure 7 It is a schematic structural diagram of a plurality of spherical rollers A and a plurality of spherical rollers B being in the same plane and in arc-shaped transitional contact when the present invention is used.

[0021] In the figure: 1. inner ring A; 2. inner wall of semi-inner ring A; 3. ball socket A; 4. outer wall of semi-inner ring A; 5. spherical roller A; 6. arc block A; 7. spring; 8. arc block B; 9. inner ring B; 10. inner wall of semi-inner ring B; 11. spherical roller B; 12. ball socket B; 13. outer wall of semi-inner ring B; 14. inner wall of outer ring; 15. outer ring; 16. arc transition; 17. retaining ring; 18. ring groove A; 19. ring groove B. Implementation

[0022] The present invention can be explained in more detail by the following examples, the present invention is not limited to the following examples, and the purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention;

[0023] Combined with Figures 1 to 4 The floating bearing for the lithium battery winding head comprises an inner ring and an outer ring 15, wherein the inner ring inner wall 14 of the outer ring 15 is necked on one side and necked on the other side, a retaining ring 17 is provided at the necked end of the outer ring inner wall 14, and an arc transition 16 is provided between the retaining ring 17 and the outer ring inner wall 14, the inner ring comprises an inner ring A1 and an inner ring B9, and a plurality of arc blocks A6 are provided on the inner ring outer wall A4 of the inner ring A1, one side of which is flush with one end face of the inner ring A1 and the other side protrudes from the other end face of the inner ring A1, a ball socket A3 is provided on the outer edge surface of each arc block A6, and a spherical roller A5 capable of rolling is embedded in each ball socket A3, which exceeds Half of the spherical roller A5 is located in the ball socket A3, and the diameter of the mouth of the ball socket A3 is smaller than the diameter of the spherical roller A5. On the inner ring outer wall B13 of the inner ring B9, a plurality of arc blocks B8 are arranged at intervals, one side of which is flush with one end face of the inner ring B9 and the other side protrudes from the other end face of the inner ring B9. A ball socket B12 is arranged on the outer edge of each arc block B8, and a spherical roller B11 capable of rolling is arranged in each ball socket B12. After the spherical roller A5 is installed in the ball socket A3, the outer diameter of the spherical roller B11 after being installed in the ball socket B12 is the same. The other end face of the inner ring A1 is adjacent to the other end face of the inner ring B9. The plurality of arc blocks B8 are arranged at intervals, and the outer diameter of the spherical roller A5 after being installed in the ball socket A3 is the same as that of the spherical roller B11 after being installed in the ball socket B12. The other end face of the inner ring A1 is adjacent to the other end face of the inner ring B9. The other side of the arc block A6 extends into the gap between the multiple arc blocks B8, and the other side of the multiple arc blocks B8 extends into the gap between the multiple arc blocks A6. A spring 7 is provided between the inner ring A1 and the inner ring B9. An annular groove A18 is provided on the other end face of the inner ring A1, and an annular groove B19 is provided on the other end face of the inner ring B9. One end of the spring 7 is fixedly connected to the bottom of the annular groove A18, and the other end of the spring 7 is fixedly connected to the bottom of the annular groove B19. The side wall of the spring 7 and the side wall of the annular groove A18 and the side wall of the annular groove B19 are all clearance-fitted. The inner ring is in contact with the arc transition 16 according to the multiple spherical rollers B11. The spherical rollers A5 and B11 are placed in the outer ring 15 in a different plane. The plane where the spherical rollers A5 are located can be in the same plane with the spherical rollers B11 after the spring 7 is contracted. The diameter of the inner ring inner wall A2 of the inner ring A1 is smaller than the diameter of the inner ring inner wall B10 of the inner ring B9. After the inner ring B9 is located in the outer ring 15, one end face of the inner ring A1 does not exceed the expanded neck end of the outer ring 15. The diameter of the spherical roller A5 is the same as the diameter of the spherical roller B11, and each arc block A6 and each arc block B8 are clearance fit.

[0024] In implementing the floating bearing for a lithium battery winding head described in the present invention, the same number of spherical rollers A5 as the plurality of ball sockets A3 are placed in the ball sockets A3. Since more than half of the spherical rollers A5 are located in the ball sockets A3 and the diameter of the mouth of the ball sockets A3 is smaller than the diameter of the spherical rollers A5, the spherical rollers A5 will not fall out of the ball sockets A3. The same number of spherical rollers B11 as the plurality of ball sockets B12 are placed in the ball sockets B12. One end of the spring 7 is fixedly connected to the bottom of the annular groove A18, and the other end of the spring 7 is fixedly connected to the bottom of the annular groove B19 so that the other side of the plurality of arc blocks A6 provided on the inner ring A1 extends into the gap between the plurality of arc blocks B8, and the other side of the plurality of arc blocks B8 provided on the inner ring B9 extends into the gap between the plurality of arc blocks A6. When in use, in combination with the attached Figures 5 to 7 Two sets of the present invention are relatively arranged as a group for use. The two outer rings 15 are sleeved in the shaft seat in a manner that the necked ends of the inner walls 14 of the two outer rings are in contact with each other. The two inner rings are placed in the two outer rings 15 in a manner that the multiple spherical rollers B11 provided on each inner ring are in contact with the arc transition 16 provided on each outer ring 15. The rotating shaft passes through the two inner rings. Since the diameter of the inner ring inner wall A2 provided on the inner ring A1 is smaller than the diameter of the inner ring inner wall B10 provided on the inner ring B9, the rotating shaft is only fixedly connected to the inner walls A2 of the two inner rings. Under the support of the two springs 7, the two inner rings are respectively provided with The plane where some of the multiple spherical rollers A5 are located is not in the same plane as the plane where the multiple spherical rollers B11 respectively provided on the two inner rings are located. When the lithium battery winding head rotates and operates, if a slight lateral sliding occurs during operation, the spring 7 provided in the present invention can effectively eliminate the damage to the bearing caused by the distortion of the inner and outer rings of the bearing after the traditional bearing is offset (to the left or right), thereby protecting the smooth operation of the present invention. When the sliding is too large, the multiple spherical rollers A5 provided on one of the inner rings A1 also contact the outer ring 15, thereby ensuring the purpose of limiting the offset and stabilizing the operation.

[0025] Parts of the present invention not described in detail are prior art.

Claims

1. A floating bearing for a lithium battery winding head, characterized by: The invention comprises an inner ring and an outer ring (15), wherein the outer ring inner wall (14) of the outer ring (15) is necked at one side and necked at the other side, a retaining ring (17) is provided at the necked end of the outer ring inner wall (14), and an arc-shaped transition (16) is provided between the retaining ring (17) and the outer ring inner wall (14), and the inner ring comprises an inner ring A (1) and an inner ring B (9), and a plurality of inner rings are provided on the inner ring outer wall A (4) of the inner ring A (1), one side of which is flush with one end face of the inner ring A (1) and the other side protrudes from the inner ring A (1) at intervals. The arc block A (6) at the other end face has a ball socket A (3) on the outer edge face of each arc block A (6), and a spherical roller A (5) capable of rolling is embedded in each ball socket A (3). A plurality of arc blocks B (8) are arranged at intervals on the inner ring outer wall B (13) of the inner ring B (9), one side of which is flush with one end face of the inner ring B (9) and the other side protrudes from the other end face of the inner ring B (9). A ball socket B (12) is provided on the outer edge face of each arc block B (8). Each ball socket B (12) is provided with a spherical roller B (11) capable of rolling, the other end face of the inner ring A (1) is adjacent to the other end face of the inner ring B (9), the other side of the plurality of arc blocks A (6) extends into the gap between the plurality of arc blocks B (8), the other side of the plurality of arc blocks B (8) extends into the gap between the plurality of arc blocks A (6), a spring (7) is provided between the inner ring A (1) and the inner ring B (9), and the inner ring is arranged according to the plurality of spherical rollers B (1 1) The plurality of spherical rollers A (5) are placed in the outer ring (15) in such a manner that they are in contact with the arc-shaped transition (16); the plane where the plurality of spherical rollers A (5) are located is not in the same plane as the plane where the plurality of spherical rollers B (11) are located; the plane where the plurality of spherical rollers A (5) are located can be in the same plane as the plurality of spherical rollers B (11) after the spring (7) is contracted; and the diameter of the inner ring inner wall A (2) provided in the inner ring A (1) is smaller than the diameter of the inner ring inner wall B (10) provided in the inner ring B (9).

2. The floating bearing for a lithium battery winding head according to claim 1 is characterized in that: An annular groove A (18) is provided on the other end surface of the inner ring A (1), and an annular groove B (19) is provided on the other end surface of the inner ring B (9). One end of the spring (7) is fixedly connected to the bottom of the annular groove A (18), and the other end of the spring (7) is fixedly connected to the bottom of the annular groove B (19). The side wall of the spring (7) and the side wall of the annular groove A (18) and the side wall of the annular groove B (19) are all clearance-fitted.

3. The floating bearing for a lithium battery winding head according to claim 1 is characterized in that: More than half of the spherical roller A (5) is located in the ball socket A (3), and the diameter of the mouth of the ball socket A (3) is smaller than the diameter of the spherical roller A (5).

4. The floating bearing for lithium battery winding head according to claim 1 is characterized in that: The outer diameters of the roller A (5) after being installed in the ball socket A (3) and the spherical roller B (11) after being installed in the ball socket B (12) are the same.

5. The floating bearing for a lithium battery winding head according to claim 1 is characterized in that: The inner ring B (9) is located inside the outer ring (15) and one end surface of the inner ring A (1) does not exceed the expanded neck end of the outer ring (15).

6. The floating bearing for a lithium battery winding head according to claim 1 is characterized in that: The diameter of the spherical roller A (5) is the same as the diameter of the spherical roller B (11).

7. The floating bearing for a lithium battery winding head according to claim 1 is characterized in that: Each arc block A (6) and each arc block B (8) are clearance-fitted.

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