Quick ball loading device for angular contact bearing nylon retainer

Abstract

The application relates to a quick ball loading device for a nylon retainer of an angular contact bearing, which comprises a base, a mounting seat and a lifting seat, a supporting column is connected to the base, the mounting seat is connected to the top end of the supporting column, an installation table is arranged at the top of the mounting seat, the lifting seat is slidingly matched on the supporting column, a placing groove and a containing cavity are formed in the lifting seat, the containing cavity comprises a pressing cavity and a placing cavity, the pressing cavity is located above the placing cavity, a plurality of conveying channels are formed between the placing groove and the pressing cavity, the pressing cavity is in a circular table shape, the bottom end of the pressing cavity is a larger-diameter end, and the bottom wall of the lifting seat abuts against the base in an initial position. The application has the effect of improving the ball loading efficiency of the retainer.

Description

Technical Field

[0001] This invention relates to the field of cage ball loading technology, and in particular to a quick ball loading device for nylon cages of angular contact bearings. Background Technology

[0002] A cage is a bearing component that partially encloses all or part of the rolling elements and moves with them. It isolates the rolling elements and typically guides and holds them within the bearing. Nylon cages allow for a degree of deformation, enabling manual installation of the rolling elements (balls). However, this process requires manual pressure on the rolling elements, consuming significant labor and time. Therefore, a rapid ball-loading device is needed to improve the efficiency of rolling element installation.

[0003] Chinese Patent CN202531668U discloses a ball loading device for bearing cages. The cage's pocket locking openings are slightly smaller than the diameter of the rolling balls. The device includes a mandrel, a ball hopper, and assembly clamps. The ball hopper is fixed to the upper end of the mandrel, and the assembly clamps are fixed beside the mandrel. The ball outlet of the ball hopper is tilted downwards and faces the jaws of the assembly clamps. One pocket locking opening of the cage is aligned with the jaws. The reset ring on the ball hopper is moved to allow the rolling balls to fall onto the pocket locking opening and into the jaws. The jaws also prevent the rolling balls from falling out of the pocket locking opening. Then, the assembly clamps are pressed to press the rolling balls into the pockets, completing one loading process. Repeating this process completes the loading of all pockets on the cage. The ball loading device is simple to manufacture, convenient to use, safe, and reliable, and will not cause injury to the operator during loading.

[0004] Regarding the aforementioned technologies, in the prior art, workers use assembly pliers to apply pressure to the ball to press it into the pocket of the cage. However, after installing one ball, the cage needs to be rotated so that the next pocket is close to the ball outlet of the ball container. This operation is time-consuming and laborious, reducing the ball loading efficiency of the cage. Summary of the Invention

[0005] To improve the ball loading efficiency of the cage, this application provides a quick ball loading device for nylon cages of angular contact bearings.

[0006] This application provides a quick ball loading device for a nylon cage of an angular contact bearing, employing the following technical solution:

[0007] A quick ball loading device for a nylon cage of an angular contact bearing includes a base, a mounting base, and a lifting base. A support column is connected to the base, and the mounting base is connected to the top of the support column. A mounting platform is provided on the top of the mounting base. The lifting base is slidably fitted onto the support column. The lifting base has a placement groove and a receiving cavity. The receiving cavity includes a clamping cavity and a placement cavity. The clamping cavity is located above the placement cavity. Several conveying channels are provided between the placement groove and the clamping cavity. The clamping cavity is frustum-shaped, and the bottom end of the clamping cavity has a larger diameter. In the initial position, the bottom wall of the lifting base abuts against the base.

[0008] By adopting the above technical solution, during ball loading, the operator installs the cage on the mounting platform, then places the steel balls into the placement slot. The steel balls roll into the conveying channel until they contact the mounting seat. The lifting seat is then raised until the steel balls roll out of the conveying channel and contact the cage. Finally, the lifting seat is pressed down. During this process, the steel balls contact the side wall of the clamping cavity. Because the inner diameter of the clamping cavity gradually decreases from bottom to top, the distance between the steel balls and the mounting platform gradually decreases. The steel balls contact the edge of the pocket on the cage, causing the cage to rotate until the steel balls are squeezed by the top of the clamping cavity. As the cage continues to rotate, the steel balls enter the pocket, achieving the effect of ball loading into the cage. The entire operation only requires the operator to raise and lower the lifting seat to complete the ball loading process. The operation is simple, time-saving, and reduces the labor intensity of the operator, thus improving the ball loading efficiency of the cage.

[0009] Optionally, the mounting platform is cylindrical, and several arc grooves are formed on the side of the mounting platform. The arc grooves are evenly distributed around the axis of the mounting platform, and the number of arc grooves is the same as the number of conveying channels.

[0010] By adopting the above technical solution, when installing the retainer, the worker will place the inner wall of the smaller diameter end of the retainer against the space between two adjacent arc grooves, and the larger diameter end of the retainer against the mounting base to position the retainer in a horizontal state. The arc grooves are used to avoid the steel balls, so that the steel balls can smoothly enter the pockets on the retainer.

[0011] Optionally, an abutting plane is provided between the arc grooves, and the width of the abutting plane is not greater than 2mm.

[0012] By adopting the above technical solution, during the process of the steel ball entering the pocket, the steel ball will press against the position between two adjacent arc grooves. If the two arc grooves are only a straight line, the mechanical strength at the position between the two arc grooves will be too small, making this position prone to deformation or damage after being pressed by the steel ball. This will affect both the installation accuracy of the cage and the smooth entry of the steel ball into the pocket. The setting of the contact plane can improve the mechanical strength at the position between the two arc grooves and reduce the possibility of damage at this position. If the width of the contact plane exceeds 2mm, the steel ball will not move towards the arc groove position when it touches the contact plane, and the cage will not rotate. This will cause the steel ball to be stuck between the inner wall of the clamping cavity and the contact plane, hindering the ball loading operation of the cage. After multiple experiments, 2mm is the maximum size. A contact plane with a width not exceeding 2mm not only provides a certain mechanical strength at the position between the two arc grooves, but also minimizes the impact on the entry of the steel ball into the pocket.

[0013] Optionally, the cross-section of the conveying channel is circular.

[0014] By adopting the above technical solution, the commonly used conveying channel has a circular cross-section. The circular conveying channel is easy to process and its shape can easily fit the shape of the steel ball. In addition, the diameter of the conveying channel must be larger than the diameter of the steel ball so that the steel ball can smoothly enter the conveying channel under its own weight.

[0015] Optionally, the mounting base is cylindrical, and the diameter of the mounting base is larger than the diameter of the support column. A sliding ring is provided at the bottom end of the lifting base, and the lifting base slides on the support column through the sliding ring. When the lifting base is in the working position, the sliding ring abuts against the bottom end of the mounting base.

[0016] By adopting the above technical solution, if the working position of the lifting seat is not positioned when the mounting seat enters the placement cavity, the steel balls are prone to detach from the conveying channel, potentially falling to other locations. The operator uses the mounting seat to limit the upward stroke of the lifting seat, thereby determining its working position. This ensures that the steel balls to be placed in the cage pocket can smoothly enter the position between the conveying channel and the cage, improving the cage's ball loading efficiency.

[0017] Optionally, the top of the mounting base is provided with a snap-fit ​​step.

[0018] By adopting the above technical solution, the snap-fit ​​step is used to further position the cage for installation, making the cage more stable when installed on the mounting platform.

[0019] Optionally, the lifting seat is connected to two force-applying handles, which are arranged opposite to each other.

[0020] By adopting the above technical solution, the force-applying handle is used to facilitate the staff in applying force to raise and lower the seat, making it easier for the staff to operate the raising and lowering seat.

[0021] Optionally, the cross-section of the conveying channel is arranged in a teardrop shape.

[0022] By adopting the above technical solution, when the lifting platform descends, the steel ball will immediately impact the highest point of the edge at the exit of the conveyor channel. If the cross-section of the conveyor channel is circular, the steel ball may deform or flip after impact at the highest point of the exit edge, thus hindering the rolling of subsequent steel balls within the conveyor channel. The cross-section of the conveyor channel is teardrop-shaped, causing the steel ball to impact the two straight sections of the teardrop shape. These two straight sections distribute the impact force of the steel ball, reducing the possibility of deformation or flipping at the exit of the conveyor channel, allowing the steel ball to roll smoothly out of the conveyor channel.

[0023] Optionally, the mounting base is provided with an ejection assembly, which includes a rotating rod, a turntable, a rotating plate, a lifting ring, and a top column. A mounting block is connected to the top of the mounting base, and the mounting platform is connected to the top of the mounting block. An installation cavity is formed within the mounting block. The rotating rod is rotatably connected to the mounting block. The turntable is connected to the bottom end of the rotating rod and located within the installation cavity. Several blocks are connected to the side wall of the turntable on the rotating plate. A clamping inclined surface is provided on the rotating plate. The lifting ring is disposed within the installation cavity. Several top columns are connected to the top wall of the lifting ring. A top hole is formed on the mounting block, and the top column is inserted into the top hole. A lifting block is connected to the side wall of the lifting ring near the rotating plate. A contact inclined surface that mates with the clamping inclined surface is formed on the lifting block. A reset component is provided on the lifting ring to return the top column to its initial position.

[0024] By adopting the above technical solution, after the retainer is filled with steel balls, it is installed on the mounting platform, making it difficult for workers to find a suitable point of force to remove the retainer. Excessive force applied to the retainer could cause severe deformation, potentially causing the steel balls to detach from the pockets. When ejecting the retainer, the worker rotates the rotating rod, causing the turntable to rotate, which in turn causes the rotating plate to rotate and press against the inclined plane, raising the lifting block and the lifting ring. This causes the top of the top column to protrude from the mounting block until the retainer is ejected from the mounting platform, achieving the effect of removing the retainer. Workers only need to rotate the rotating rod to remove the retainer, making the operation simple and quick, improving the efficiency of retainer disassembly, and reducing the possibility of damage by avoiding direct force on the retainer.

[0025] Optionally, the reset element is a reset spring, which is sleeved on the top column and located between the lifting ring and the top wall of the mounting cavity.

[0026] By adopting the above technical solution, the staff uses a return spring as the reset component of the top column. The return spring has the characteristics of being easily deformable, having high elasticity, and having a long service life. Moreover, the return spring can still have good mechanical properties after long-term use, ensuring that the top column can be reset smoothly.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During ball loading, the operator installs the cage on the mounting platform, then places the steel balls into the placement slot. The steel balls roll into the conveying channel until they contact the mounting seat. The lifting seat is then raised until the steel balls roll out of the conveying channel and contact the cage. Finally, the lifting seat is pressed down. During this process, the steel balls contact the side wall of the clamping cavity. Because the inner diameter of the clamping cavity gradually decreases from bottom to top, the distance between the steel balls and the mounting platform gradually decreases. The steel balls contact the edge of the pocket on the cage, causing the cage to rotate until the steel balls are squeezed by the top of the clamping cavity. As the cage continues to rotate, the steel balls enter the pocket, achieving the ball loading effect. The entire operation only requires the operator to raise and lower the lifting seat to complete the ball loading process. The operation is simple, time-saving, and reduces the labor intensity of the operator, thus improving the ball loading efficiency of the cage.

[0029] 2. After the retainer is fully embedded with steel balls, it is installed on the mounting platform, making it difficult for workers to find a suitable point of force to remove it. Applying excessive force to the retainer could cause severe deformation, potentially causing the steel balls to detach from the pockets. To eject the retainer, the worker rotates the rotating rod, causing the turntable to rotate and the rotating plate to press against the inclined plane. This raises the lifting block, which in turn raises the lifting ring, causing the top of the ejector column to protrude from the mounting block until the retainer is ejected from the mounting platform, achieving the desired removal. Workers only need to rotate the rotating rod to remove the retainer, making the operation simple and quick, improving disassembly efficiency, and reducing the possibility of damage by avoiding direct force on the retainer. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a quick ball loading device for an angular contact bearing nylon cage according to Embodiment 1 of this application.

[0031] Figure 2 This is a cross-sectional view of Embodiment 1 of this application, used to illustrate the structure of the ball loading device.

[0032] Figure 3 This is a state diagram of the lifting seat in the working position in Embodiment 1 of this application.

[0033] Figure 4 This is a cross-sectional view in Embodiment 2 of this application used to illustrate that the conveying channel has a teardrop shape.

[0034] Figure 5 This is a schematic diagram of the mounting base in Embodiment 3 of this application.

[0035] Figure 6 This is a cross-sectional view of Embodiment 3 of this application, used to illustrate the structure of the mounting block and the ejector assembly.

[0036] Figure 7 This is a schematic diagram of the ejection component in Embodiment 3 of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Base; 11. Chassis; 12. Support column; 2. Mounting seat; 21. Mounting platform; 211. Arc groove; 212. Contact surface; 22. Snap-fit ​​step; 3. Lifting seat; 31. Sliding ring; 32. Placement groove; 33. Receiving cavity; 331. Pressing cavity; 332. Placement cavity; 34. Conveying channel; 35. Force-applying handle; 4. Mounting block; 41. Mounting cavity; 5. Ejection assembly; 51. Rotating rod; 52. Turntable; 53. Rotating plate; 531. Pressing inclined surface; 54. Lifting ring; 541. Lifting block; 542. Contact inclined surface; 55. Top column; 6. Reset component. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0039] Embodiment 1 of this application discloses a quick ball loading device for a nylon cage of an angular contact bearing. (See also...) Figure 1 and Figure 2 The quick ball loading device for the nylon cage of the angular contact bearing includes a base 1, a mounting base 2, and a lifting base 3. The base 1 includes an integrally formed chassis 11 and a support column 12, the support column 12 being cylindrical.

[0040] Reference Figure 1 and Figure 2 The mounting base 2 is cylindrical and is bolted to the top of the support column 12, with the mounting base 2 and the support column 12 coaxially arranged. A mounting platform 21, also cylindrical and coaxial with the mounting base 2, is fixedly connected to the top of the mounting base 2. Several arc grooves 211 are formed on the side wall of the mounting platform 21, evenly distributed circumferentially around its axis. A contact surface 212 is provided between adjacent arc grooves 211, with a width not exceeding 2mm (2mm is used as an example in this embodiment). The contact surface 212 is used to improve the mechanical strength between adjacent arc grooves 211. A snap-fit ​​step 22 is also formed on the top wall of the mounting base 2, with the mounting platform 21 located within it. The snap-fit ​​step 22 assists in the installation of the retainer, making the support frame more stable.

[0041] Reference Figure 2The bottom end of the lifting seat 3 is integrally formed with a sliding ring 31, which slides on the support column 12 via the sliding ring 31. The lifting seat 3 has a placement groove 32 and a receiving cavity 33. The receiving cavity 33 is located inside the placement groove 32 and includes a pressing cavity 331 and a placement cavity 332. The pressing cavity 331 is located above the placement cavity 332. The placement cavity 332 is cylindrical, and the pressing cavity 331 is frustum-shaped, with the bottom end of the pressing cavity 331 having a larger diameter.

[0042] Reference Figure 2 The bottom end of the placement groove 32 has several conveying channels 34 that communicate with the bottom end of the pressing cavity 331. The number of conveying channels 34 is the same as the number of arc grooves 211. In this embodiment, the cross-section of the conveying channel 34 is circular, and the inlet end of the conveying channel 34 is higher than the outlet end of the conveying channel 34.

[0043] Reference Figure 2 and Figure 3 When the bottom end of the lifting seat 3 touches the chassis 11, it is the initial position of the lifting seat 3. When the outlet end of the conveying channel 34 is close to the arc groove 211, it is the working position of the lifting seat 3. In order to accurately position the working position of the lifting seat 3, the diameter of the mounting base 2 is larger than the diameter of the support column 12. When the lifting seat 3 reaches its working position, the sliding ring 31 touches the bottom end of the mounting base 2.

[0044] Reference Figure 1 To facilitate the application of force by the staff, two force application handles 35 are fixedly connected to the lifting seat 3, and the two force application handles 35 are arranged opposite to each other.

[0045] The implementation principle of the quick ball loading device for the nylon cage of the angular contact bearing in Embodiment 1 of this application is as follows: When assembling the ball loading device, the worker first puts the lifting seat 3 on the support column 12, then places the mounting seat 2 in the clamping cavity 331 and abuts against the top of the support column 12, and finally uses bolts to install the mounting seat 2 on the top of the support column 12.

[0046] During ball loading, the operator attaches the cage to the engagement step 22 and ensures that the inner wall of the smaller end of the cage touches the contact surface 212. Then, the steel ball is placed into the placement slot 32. The steel ball rolls along the conveying channel 34 until it touches the mounting seat 2. The lifting seat 3 is then raised to the working position, and the steel ball rolls from the conveying channel 34 to the outlet end between the cage and the conveying channel 34. Finally, pressure is applied to the lifting seat 3 until it is in the initial position. During this process, the steel ball touches the side wall of the clamping cavity 331, causing the distance between the steel ball and the arc groove 211 to gradually decrease. The steel ball will touch the edge of the pocket on the cage, causing the cage to rotate until the steel ball is squeezed by the top edge of the clamping cavity 331. As the cage rotates, the steel ball is squeezed into the pocket, and part of the steel ball enters the arc groove 211, achieving the effect of ball loading into the cage.

[0047] The entire operation process only requires the operator to lift and press down the lifting seat 3 to complete the ball loading process of the cage. The operation is simple, takes little time, reduces the labor intensity of the operator, and improves the ball loading efficiency of the cage.

[0048] Example 2: The difference between this example and Example 1 is that the cross-sectional shape of the conveying channel 34 is different.

[0049] Reference Figure 4 The cross-section of the conveying channel 34 is set in a teardrop shape.

[0050] When the lifting platform 3 descends, the steel ball will immediately impact the highest point of the exit edge of the conveyor channel 34. If the cross-section of the conveyor channel 34 is circular, the steel ball may deform or flip after impact, thus hindering the subsequent rolling of steel balls within the conveyor channel 34. However, if the cross-section of the conveyor channel 34 is teardrop-shaped, the steel ball will impact the two straight sections of the teardrop shape. These two straight sections distribute the impact force, reducing the possibility of deformation or flipping at the exit end of the conveyor channel 34, allowing the steel ball to roll smoothly out of the conveyor channel 34.

[0051] Example 3: The difference between this example and Example 1 is that the top of the mounting base 2 is provided with an ejector assembly 5 for assisting in the disassembly of the retainer.

[0052] Reference Figure 5 , Figure 6 and Figure 7 Mounting block 4 is fixedly connected to the top wall of mounting base 2. Mounting platform 21 and snap-fit ​​step 22 are both set on mounting block 4. Ejection assembly 5 is set on mounting block 4. Ejection assembly 5 includes rotating rod 51, turntable 52, rotating plate 53, lifting ring 54 and top column 55. Mounting cavity 41 is set inside mounting block 4. Rotating rod 51 is rotatably connected to mounting block 4. Turntable 52 is fixedly connected to the bottom end of rotating rod 51. Rotating plate 53 is a fan-shaped plate. Several rotating plates 53 are fixedly connected to the side wall of turntable 52. In this embodiment, four plates are used as an example. The four rotating plates 53 are evenly distributed around the axis of turntable 52. One side of rotating plate 53 is provided with a pressing inclined surface 531.

[0053] Reference Figure 5 , Figure 6 and Figure 7The lifting ring 54 is disposed within the mounting cavity 41. Several top posts 55 are fixedly connected to the top wall of the lifting ring 54; in this embodiment, four posts are used as an example. A top hole is opened on the locking step 22 corresponding to the position of the top post 55. The top post 55 passes through the top hole and slides within it. Initially, the top of the top post 55 is flush with the locking step 22. A lifting block 541 is fixedly connected to the inner wall of the lifting ring 54 near the rotating plate 53. A contact slope 542 matching the pressing slope 531 is provided on the lifting block 54 near the rotating plate 53. A reset element 6, which is a reset spring, is provided on the lifting ring 54. The reset element 6 is sleeved on the top post 55 and located between the lifting ring 54 and the top wall of the mounting cavity 41.

[0054] The implementation principle of the ejector component 5 in this embodiment is as follows: When disassembling the retainer, the operator rotates the rotating rod 51, which drives the turntable 52 to rotate, causing the rotating plate 53 to rotate, so that the pressing inclined surface 531 contacts the inclined surface 542, causing the lifting block 541 to rise, which drives the lifting ring 54 to rise, so that the top of the top column 55 protrudes from the locking step 22, and ejects the retainer from the mounting platform 21, thus achieving the effect of removing the retainer.

[0055] The cage can be removed by simply rotating the lever 51, which is simple and quick and improves the efficiency of cage removal. It also prevents workers from directly applying force to the cage, reducing the possibility of cage damage.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick ball loading device for a nylon cage of an angular contact bearing, characterized in that: The device includes a base (1), a mounting base (2), and a lifting base (3). A support column (12) is connected to the base (1). The mounting base (2) is connected to the top of the support column (12). A mounting platform (21) is provided on the top of the mounting base (2). The lifting base (3) is slidably fitted onto the support column (12). The lifting base (3) has a placement groove (32) and a receiving cavity (33). The receiving cavity (33) includes a pressing cavity (331) and a placement cavity (332). The pressing cavity (331) is located above the placement cavity (332). The placement groove (32) and the pressing cavity (332) are connected. Several conveying channels (34) are opened between the 31) and the clamping cavity (331) is shaped like a frustum. The bottom end of the clamping cavity (331) is a larger diameter end. In the initial position, the bottom wall of the lifting seat (3) abuts against the base (1); the mounting platform (21) is cylindrical. Several arc grooves (211) are opened on the side of the mounting platform (21). The arc grooves (211) are evenly distributed around the axis of the mounting platform (21). The number of arc grooves (211) is the same as the number of conveying channels (34); the mounting seat (2) is provided with an ejection assembly (5). The component (5) includes a rotating rod (51), a turntable (52), a rotating plate (53), a lifting ring (54), and a top column (55). A mounting block (4) is connected to the top of the mounting base (2). The mounting platform (21) is connected to the top of the mounting block (4). A mounting cavity (41) is opened inside the mounting block (4). The rotating rod (51) is rotatably connected to the mounting block (4). The turntable (52) is connected to the bottom end of the rotating rod (51) and located in the mounting cavity (41). Several blocks are connected to the side wall of the turntable (52) of the rotating plate (53). Abutment is provided on the rotating plate (53). The inclined surface (531) is tightened, the lifting ring (54) is disposed in the mounting cavity (41), several top posts (55) are connected to the top wall of the lifting ring (54), the mounting block (4) has a top hole, the top posts (55) are inserted into the top hole, the lifting ring (54) has a lifting block (541) connected to the side wall of the lifting ring (54) near the rotating plate (53), the lifting block (541) has a contact inclined surface (542) that cooperates with the tightening inclined surface (531), and the lifting ring (54) is provided with a reset member (6) that returns the top posts (55) to the initial position.

2. The quick ball loading device for the nylon cage of the angular contact bearing according to claim 1, characterized in that: A contact plane (212) is provided between the arc grooves (211), and the width of the contact plane (212) is not greater than 2mm.

3. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The cross-section of the conveying channel (34) is circular.

4. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The mounting base (2) is cylindrical and its diameter is larger than that of the support column (12). The bottom end of the lifting seat (3) is provided with a sliding ring (31). The lifting seat (3) slides on the support column (12) through the sliding ring (31). When the lifting seat (3) is in the working position, the sliding ring (31) abuts against the bottom end of the mounting base (2).

5. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The top of the mounting base (2) is provided with a snap-fit ​​step (22).

6. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The lifting seat (3) is connected to two force-applying handles (35), which are arranged opposite to each other.

7. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The cross-section of the conveying channel (34) is teardrop-shaped.

8. The quick ball loading device for nylon cages of angular contact bearings according to claim 1, characterized in that: The reset component (6) is a reset spring. The reset component (6) is sleeved on the top column (55) and located between the lifting ring (54) and the top wall of the mounting cavity (41).

Images