Automatic steel ball adding device for automotive wheel hub bearings

Abstract

The present invention discloses an automatic steel ball adding device for automobile hub bearings, which relates to the technical field of automobile parts processing. The present invention includes a device frame, and a vertically arranged lower ejector rod is fixedly installed on one side of the bottom of the device frame. The telescopic end of the lower ejector rod faces upward and is fixedly installed with a top head, and a bearing body is placed on the top head. The bearing body includes a bearing outer shell ring, and a bearing inner shell ring is arranged on the inner circle of the bottom of the bearing outer shell ring. A lower cage and an upper cage are sequentially arranged in the bearing outer shell ring from bottom to top, and a plurality of evenly distributed steel ball rolling elements are sequentially placed on the lower cage and the upper cage. By setting a filling component, the present invention can press a group of steel ball rolling elements into the upper cage in sequence, completing the automatic filling of the upper cage and the steel ball rolling elements. While saving manpower, it improves the filling speed and filling accuracy, and reduces the damage to the upper cage during the filling process.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts processing, and particularly to an automatic steel ball adding device for automotive wheel hub bearings. Background Art

[0002] The main functions of the wheel hub bearing are to bear the load and provide precise guidance for the rotation of the wheel hub. It bears both axial load and radial load, and is a very important component. Traditional automotive wheel bearings are composed of two sets of tapered roller bearings or ball bearings combined. The installation, greasing, sealing, and clearance adjustment of the bearings are all carried out on the automotive production line.

[0003] The existing third-generation automotive wheel hub bearings (such as Figure 3 , Figure 4 shown) have an internal ball structure composed of upper and lower cages and two groups of steel balls inside. The steel balls on both sides are added from the corresponding side directions. However, the width diameter in the adding direction of the steel balls on one side is significantly smaller than the width where the steel balls are placed inside, which results in the smooth addition of the steel balls on one side being impossible. It is necessary to squeeze them into the internal cage. Currently, the method adopted is manual extrusion for adding, and each steel ball needs to be added with appropriate manual force, resulting in low processing efficiency. Therefore, an automatic steel ball adding device for automotive wheel hub bearings is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that in the current third-generation automotive wheel hub bearings, the method of manually extruding and adding steel balls requires each steel ball to be added with appropriate manual force, resulting in low processing efficiency. The present invention provides an automatic steel ball adding device for automotive wheel hub bearings.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] An automatic steel ball adding device for automotive wheel hub bearings includes a device frame. One side of the bottom of the device frame is fixedly installed with a vertically arranged lower ejector rod. The telescopic end of the lower ejector rod faces upward and is fixedly installed with a top head, and a bearing body is placed on the top head.

[0007] The bearing body includes a bearing outer shell ring. The inner ring at the bottom of the bearing outer shell ring is provided with a bearing inner shell ring. Inside the bearing outer shell ring, a lower cage and an upper cage are sequentially arranged from bottom to top. A plurality of evenly distributed steel ball rolling bodies are sequentially placed on the lower cage and the upper cage. The bearing body is adapted to the bearing inner shell ring.

[0008] On one side of the top of the device frame, an upper telescopic rod and a filling rotary motor are fixedly installed. At the bottom of the upper telescopic rod, there is a filling component for sequentially pressing a plurality of the steel ball rolling elements into the upper cage. The upper telescopic rod is used to cooperate with the lower ejector rod to apply a pre-tightening force to the bearing body, and the filling rotary motor is used to drive the filling component and the bearing body to rotate;

[0009] The filling component includes a rotary cylinder rotatably installed at the bottom of the upper telescopic rod. The telescopic end of the upper telescopic rod is fixedly installed with a lifting slide rod. The top end of the lifting slide rod is slidably installed inside the rotary cylinder. The bottom end of the lifting slide rod is provided with an elastic horn-shaped structure that can deform and internally support and fix the bearing body. The rotary cylinder and the output shaft of the filling rotary motor are provided with the same synchronous pulley set. On one side of the upper telescopic rod, a filling frame is fixedly installed. At the bottom end of the filling frame, there is a sliding frame. The bottom end of the sliding frame extends into the interior of the bearing housing ring and is fixedly installed with a C-shaped filling pressing plate.

[0010] Further, the elastic horn-shaped structure includes four horn-shaped elastic pieces uniformly fixedly installed at the bottom end of the lifting slide rod. The interior of the lifting slide rod is a hollow structure. A horn-shaped support rod is slidably installed inside the lifting slide rod. The bottom end of the horn-shaped support rod extends between the four horn-shaped elastic pieces. The outer wall shape of the horn-shaped support rod is adapted to the inner wall shape of the horn-shaped elastic pieces. On both sides of the lifting slide rod, first limiting slide holes are opened. The top end of the horn-shaped support rod extends between the two first limiting slide holes. On both sides of the top end of the horn-shaped support rod, limiting slide nails are fixedly installed. The two limiting slide nails are respectively slidably installed inside the two first limiting slide holes. Inner grooves are opened at the bottom of the outer walls of the horn-shaped elastic pieces. A plurality of uniformly distributed limiting claws are fixedly installed on the inner ring of the bottom of the upper cage. The limiting claws are adapted to the inner grooves.

[0011] Further, the sliding frame is slidably installed at the bottom end of the filling frame. Second limiting slide holes are opened at the bottom end of the filling frame. On the side of the sliding frame facing the filling frame, a fastening bolt is fixedly installed. One end of the fastening bolt penetrates through the second limiting slide hole and is screwed with a fastening handle. One side of the fastening handle is closely attached to the side wall of the filling frame.

[0012] Further, a steel ball filling flow channel is fixedly installed on one side of the device frame. The bottom end of the steel ball filling flow channel is fixedly installed with a steel ball filling pipe. The bottom end of the steel ball filling pipe extends into the interior of the bearing housing ring. A steel ball storage tank is fixedly installed on one side of the device frame. A conveying pipe is fixedly installed between the steel ball storage tank and the steel ball filling flow channel. A cover plate is placed on the top of the steel ball storage tank.

[0013] Furthermore, two small electromagnetic knife gate valves are arranged on the delivery pipe.

[0014] Furthermore, a U-shaped horizontal loading rack is provided on one side of the device frame, the bearing body is placed on the U-shaped horizontal loading rack, and the U-shaped horizontal loading rack is located between the lower push rod and the upper telescopic rod.

[0015] Furthermore, a lifting arm is fixedly installed on one side of the device frame, a horizontal movable cantilever is fixedly installed on the telescopic end of the lifting arm, and the U-shaped horizontal loading rack is fixedly installed on the top of the horizontal movable cantilever.

[0016] Furthermore, a limiting slide is slidably installed on the top of the U-shaped horizontal loading rack, and the limiting slide is adapted to the bearing body.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a filling assembly, so that the filling assembly cooperates with the upper telescopic rod and the filling rotating motor, so that a group of steel ball rolling bodies can be pressed into the upper cage in sequence, and the upper cage and the steel ball rolling bodies are automatically filled, which saves manpower, improves the filling speed and filling accuracy, and reduces the damage to the upper cage during the filling process;

[0019] 2. The present invention sets an elastic trumpet-shaped structure, so that when the elastic trumpet-shaped structure moves downward, the four trumpet-shaped spring pieces are stretched open, the inner groove contacts the limit claws, and the upper retainer is clamped, so that the upper retainer can rotate with the elastic trumpet-shaped structure. The locking and unlocking of the upper retainer can be completed by a simple lifting action, which saves the steps and time of positioning the upper retainer and further improves the filling speed;

[0020] 3. The present invention provides a fastening bolt and a fastening handle so that the slide is locked at the bottom end of the filling frame by the fastening bolt and the fastening handle. When the height of the C-shaped filling plate needs to be adjusted or calibrated, the fastening handle can be unscrewed to release the lock on the slide, so that the slide can slide up and down along the filling frame, and then the fastening handle can be tightened again so that the fastening handle is pressed against one side of the filling frame, and the slide is locked again, thereby completing the rapid adjustment of the height of the C-shaped filling plate;

[0021] 4. The present invention provides a steel ball filling flow channel so that a large number of steel ball rolling bodies can be loaded in the steel ball storage tank. When the lower push rod drives the bearing body to move upward, the steel ball filling pipe at the bottom of the steel ball filling flow channel will automatically extend into the bearing housing ring. When the steel ball rolling body needs to be filled, the steel ball rolling body inside the steel ball storage tank will enter the bearing housing ring through the conveying pipe, the steel ball filling flow channel and the steel ball filling pipe in sequence, and fall on the upper retaining frame to wait for pressurization, thereby realizing automatic filling of the steel ball rolling body without manual filling;

[0022] 5. By setting a small electromagnetic knife gate valve in the present invention, the steel ball rolling elements can be blocked by the small electromagnetic knife gate valve. The small electromagnetic knife gate valve located above is closed, and the last steel ball rolling element is between two small electromagnetic knife gate valves. Then, the small electromagnetic knife gate valve below is opened to allow the steel ball rolling element to fall into the bearing housing ring. This can not only achieve the automatic feeding of the steel ball rolling elements but also ensure that only one steel ball rolling element is filled each time, effectively preventing the problem of excessive filling of the steel ball rolling elements and resulting in accumulation and jamming inside the bearing housing ring.

[0023] 6. By setting a U-shaped horizontal loading rack in the present invention, when loading the bearing body, the bearing body can be placed on the U-shaped horizontal loading rack and pushed into one end of the U-shaped horizontal loading rack, making the bearing body contact the arc edge of the U-shaped horizontal loading rack. Then, the lower ejector rod drives the ejector head to lift and jack up the bearing body, thus avoiding direct contact between the staff and components such as the ejector head and the elastic trumpet-shaped structure without protection, reducing the operation risk.

[0024] 7. By setting a limiting slide plate in the present invention, after placing the bearing body on the U-shaped horizontal loading rack, the staff can hold the limiting slide plate and push it, so that the limiting slide plate contacts the bearing body and drives the bearing body to slide to the arc edge of the U-shaped horizontal loading rack. Then, the staff can hold the limiting slide plate to limit the bearing body, preventing the bearing body from slipping due to mechanical vibration during the upward movement of the ejector head. At the same time, the limiting slide plate plays a protective role for the staff's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the first perspective three-dimensional structure schematic diagram of the present invention;

[0026] Figure 2 is the second perspective three-dimensional structure schematic diagram of the present invention;

[0027] Figure 3 is the three-dimensional structure schematic diagram of the bearing body of the present invention;

[0028] Figure 4 is the internal three-dimensional structure schematic diagram of the bearing body of the present invention;

[0029] Figure 5 is the three-dimensional structure schematic diagram of the cooperation between the lower ejector rod and the filling component of the present invention;

[0030] Figure 6 is the three-dimensional structure schematic diagram of the lower ejector rod of the present invention;

[0031] Figure 7 is the three-dimensional structure schematic diagram of the cooperation between the upper cage and the filling component of the present invention;

[0032] Figure 8It is a three-dimensional structural schematic diagram of the cooperation between the upper telescopic rod and the filling component of the present invention;

[0033] Figure 9 It is a three-dimensional structural schematic diagram of the cooperation between the horn-shaped elastic sheet and the horn-shaped support rod of the present invention;

[0034] Figure 10 It is a three-dimensional structural schematic diagram of the cooperation between the filling rack and the C-shaped filling pressing plate of the present invention;

[0035] Figure 11 It is a three-dimensional structural schematic diagram of the cooperation between the steel ball filling pipe and the steel ball storage tank of the present invention;

[0036] Figure 12 It is a three-dimensional structural schematic diagram of the loading rack of the present invention;

[0037] Reference numerals: 1, device frame; 2, lower ejector rod; 3, ejector head; 4, bearing body; 401, bearing outer shell ring; 402, bearing inner shell ring; 403, lower cage; 404, upper cage; 4041, limit claw; 405, steel ball rolling element; 5, upper telescopic rod; 6, rotating cylinder; 7, lifting slide rod; 8, elastic horn-shaped structure; 801, horn-shaped elastic sheet; 802, horn-shaped support rod; 803, limit slide nail; 9, filling rotating motor; 10, synchronous pulley set; 11, filling rack; 12, slide rack; 13, C-shaped filling pressing plate; 14, fastening bolt; 15, fastening handle; 16, steel ball filling flow channel; 17, steel ball filling pipe; 18, steel ball storage tank; 19, conveying pipe; 20, cover plate; 21, small electromagnetic knife gate valve; 22, U-shaped horizontal loading rack; 23, horizontal moving cantilever; 24, lifting arm; 25, limit slide plate. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0042] As Figures 1 to 12 shown, the automatic steel ball adding device for an automobile wheel hub bearing includes a device frame 1. One side of the bottom of the device frame 1 is fixedly installed with a vertically arranged lower ejector rod 2. As Figure 6 shown, the telescopic end of the lower ejector rod 2 faces upward and is fixedly installed with a top head 3, and a bearing body 4 is placed on the top head 3;

[0043] As Figure 3 、 Figure 4 shown, the bearing body 4 includes a bearing outer housing ring 401. The inner ring of the bottom of the bearing outer housing ring 401 is provided with a bearing inner housing ring 402. Inside the bearing outer housing ring 401, a lower cage 403 and an upper cage 404 are sequentially arranged from bottom to top. A plurality of evenly distributed steel ball rolling elements 405 are sequentially placed on the lower cage 403 and the upper cage 404. The bearing body 4 is adapted to the bearing inner housing ring 402;

[0044] As Figure 1 shown, one side of the top of the device frame 1 is fixedly installed with an upper telescopic rod 5 and a filling rotating motor 9. The bottom of the upper telescopic rod 5 is provided with a filling assembly for sequentially pressing a plurality of steel ball rolling elements 405 onto the upper cage 404. The upper telescopic rod 5 is used to cooperate with the lower ejector rod 2 to apply a pre-tightening force to the bearing body 4, and the filling rotating motor 9 is used to drive the filling assembly and the bearing body 4 to rotate;

[0045] As Figure 7 shown, the filling assembly includes a rotating cylinder 6 rotatably installed at the bottom of the upper telescopic rod 5. The telescopic end of the upper telescopic rod 5 is fixedly installed with a lifting slide rod 7. The top end of the lifting slide rod 7 is slidably installed inside the rotating cylinder 6. The bottom end of the lifting slide rod 7 is provided with an elastic horn-shaped structure 8 that can deform and internally support and fix the bearing body 4. As Figure 5 shown, the rotating cylinder 6 and the output shaft of the filling rotating motor 9 are provided with the same synchronous pulley group 10. As Figure 7As shown, a filling rack 11 is fixedly installed on one side of the upper telescopic rod 5. Figure 10 As shown, a sliding rack 12 is arranged at the bottom end of the filling rack 11. The bottom end of the sliding rack 12 extends into the interior of the bearing housing ring 401 and is fixedly installed with a C-shaped filling pressing plate 13. In this embodiment, the C-shaped filling pressing plate 13 is a semi-circular spiral structure, and the two ends of the C-shaped filling pressing plate 13 are at different heights and not at the same level. Specifically, when the automatic steel ball adding device for automobile wheel hub bearings is in use, first place the bearing body 4 with the steel ball rolling elements 405 already loaded on the lower cage 403 on the top head 3, so that the top head 3 is inserted into the interior of the bearing inner ring 402. At this time, no steel ball rolling elements 405 are loaded in the upper cage 404. The lower ejector rod 2 drives the top head 3 to drive the bearing body 4 to move upward until both the elastic horn-shaped structure 8 at the bottom end of the lifting slide rod 7 and the C-shaped filling pressing plate 13 at the bottom end of the filling rack 11 extend into the interior of the bearing housing ring 401. The elastic horn-shaped structure 8 deforms under extrusion to support and fix the inner ring of the upper cage 404, pressing the bearing inner ring 402 against the top head 3, and the upper cage 404 is pressed by the elastic horn-shaped structure 8. Then, the first steel ball rolling element 405 is put into the bearing housing ring 401. At this time, the filling rotation motor 9 is started, and the rotating cylinder 6 is driven to rotate through the synchronous pulley group 10, so as to drive the elastic horn-shaped structure 8 to rotate through the lifting slide rod 7, and further drive the upper cage 404 and the C-shaped filling pressing plate 13 to rotate relative to each other, so that the steel ball rolling elements 405 filled on the upper cage 404 rotate synchronously and sequentially contact the higher end of the C-shaped filling pressing plate 13. As the steel ball rolling elements 405 and the C-shaped filling pressing plate 13 rotate relative to each other, the pressure on the steel ball rolling elements 405 by the C-shaped filling pressing plate 13 gradually increases, and the steel ball rolling elements 405 are gradually pressed into the upper cage 404 along the spiral surface at the bottom of the C-shaped filling pressing plate 13. After that, the above filling operation is repeated to press a group of steel ball rolling elements 405 into the upper cage 404 in sequence, completing the automatic filling of the upper cage 404 and the steel ball rolling elements 405, saving manpower, improving the filling speed and filling accuracy, and reducing the damage to the upper cage 404 during the filling process.

[0046] As Figure 8 、 Figure 9As shown, the elastic trumpet-shaped structure 8 includes four trumpet-shaped spring pieces 801 uniformly fixedly installed at the bottom end of the lifting slide bar 7. The interior of the lifting slide bar 7 is a hollow structure. A trumpet-shaped support rod 802 is slidably installed inside the lifting slide bar 7. The bottom end of the trumpet-shaped support rod 802 extends between the four trumpet-shaped spring pieces 801. The outer wall shape of the trumpet-shaped support rod 802 is adapted to the inner wall shape of the trumpet-shaped spring piece 801. First limiting sliding holes are provided on both sides of the lifting slide bar 7. The top end of the trumpet-shaped support rod 802 extends between the two first limiting sliding holes. Limiting sliding pins 803 are fixedly installed on both sides of the top end of the trumpet-shaped support rod 802. The two limiting sliding pins 803 are respectively slidably installed inside the two first limiting sliding holes. The outer wall bottom of the trumpet-shaped spring piece 801 is provided with an inner groove, as shown in FIG. Figure 4 As shown, the bottom inner ring of the upper retaining frame 404 is fixedly installed with a plurality of evenly distributed limiting claws 4041, and the limiting claws 4041 are adapted to the inner groove; specifically, by setting the elastic trumpet-shaped structure 8, in the initial state, the trumpet-shaped support rod 802 slides downward under the action of gravity and the elastic force of the four surrounding trumpet-shaped spring pieces 801, so that the bottom of the trumpet-shaped support rod 802 and the bottom of the four trumpet-shaped spring pieces 801 are not at the same height; when the upper telescopic rod 5 drives the elastic trumpet-shaped structure 8 to move downward, the bottom of the trumpet-shaped support rod 802 contacts the top head 3 located inside the bearing inner shell ring 402, so that the trumpet-shaped support rod 802 slides upward, thereby squeezing into the four trumpet-shaped spring pieces 801, and opening the four trumpet-shaped spring pieces. The trumpet-shaped spring piece 801 makes the inner groove at the lower end of the outer side of the trumpet-shaped spring piece 801 contact with the limiting claw 4041 on the upper retaining frame 404, thereby clamping the upper retaining frame 404, so that the upper retaining frame 404 can rotate together with the elastic trumpet-shaped structure 8. When the filling is completed, the elastic trumpet-shaped structure 8 is lifted up, and the trumpet-shaped support rod 802 is no longer in contact with the top head 3. The trumpet-shaped support rod 802 falls again, and the four trumpet-shaped spring pieces 801 are re-merged and no longer in contact with the limiting claw 4041, automatically releasing the limit on the upper retaining frame 404. The locking and unlocking of the upper retaining frame 404 can be completed through a simple lifting action, which saves the steps and time of positioning the upper retaining frame 404, and further improves the filling speed.

[0047] like Figure 10As shown in the figure, the carriage 12 is slidably mounted at the bottom end of the filling rack 11. A second limiting sliding hole is provided at the bottom end of the filling rack 11. A fastening bolt 14 is fixedly installed on one side of the carriage 12 facing the filling rack 11. One end of the fastening bolt 14 penetrates through the second limiting sliding hole and is screwed with a fastening handle 15. One side of the fastening handle 15 is closely attached to the side wall of the filling rack 11. Specifically, by setting the fastening bolt 14 and the fastening handle 15, the carriage 12 is locked to the bottom end of the filling rack 11 through the fastening bolt 14 and the fastening handle 15. When it is necessary to adjust or calibrate the height of the C-shaped filling pressing plate 13, the fastening handle 15 can be unscrewed to release the locking of the carriage 12, so that the carriage 12 can slide up and down along the filling rack 11, and then the fastening handle 15 is tightened again to press the fastening handle 15 against one side of the filling rack 11 to lock the carriage 12 again, thereby completing the rapid adjustment of the height of the C-shaped filling pressing plate 13.

[0048] As Figure 5 shown in the figure, a steel ball filling flow channel 16 is fixedly installed on one side of the device frame 1. As Figure 11 shown in the figure, a steel ball filling pipe 17 is fixedly installed at the bottom end of the steel ball filling flow channel 16. The bottom end of the steel ball filling pipe 17 extends into the interior of the bearing housing ring 401. A steel ball storage tank 18 is fixedly installed on one side of the device frame 1. A conveying pipe 19 is fixedly installed between the steel ball storage tank 18 and the steel ball filling flow channel 16. In this embodiment, a vibrator can be provided on one side of the steel ball storage tank 18 to apply high-frequency vibration to the steel ball rolling elements 405 inside the steel ball storage tank 18 to prevent the steel ball rolling elements 405 from blocking at the port of the conveying pipe 19 when discharging. A cover plate 20 is placed on the top of the steel ball storage tank 18. Specifically, by setting the steel ball filling flow channel 16, a large number of steel ball rolling elements 405 are loaded in the steel ball storage tank 18. When the lower ejector rod 2 drives the bearing body 4 to move upward, the steel ball filling pipe 17 at the bottom end of the steel ball filling flow channel 16 will automatically extend into the bearing housing ring 401. When it is necessary to fill the steel ball rolling elements 405, the steel ball rolling elements 405 inside the steel ball storage tank 18 will sequentially enter the bearing housing ring 401 through the conveying pipe 19, the steel ball filling flow channel 16 and the steel ball filling pipe 17, and fall on the upper cage 404 to wait for pressurization, thereby realizing the automatic filling of the steel ball rolling elements 405 without manual filling.

[0049] As Figure 11As shown in the figure, two small electromagnetic knife gate valves 21 are provided on the conveying pipe 19. In this embodiment, the conveying pipe 19 is inclined, and the distance between the two small electromagnetic knife gate valves 21 is slightly larger than the outer diameter of the steel ball rolling body 405. Specifically, by setting the small electromagnetic knife gate valve 21, when it is necessary to add the steel ball rolling body 405, the small electromagnetic knife gate valve 21 located below remains closed. The steel ball rolling body 405 inside the steel ball storage tank 18 will automatically roll into the conveying pipe 19 under the vibration of the vibrator and be blocked by the small electromagnetic knife gate valve 21. At this time, the small electromagnetic knife gate valve 21 located above starts to close, and the knife gate plate inside it will be stuck between the penultimate and the first steel ball rolling body 405 to separate the two steel ball rolling bodies 405. The last steel ball rolling body 405 is between the two small electromagnetic knife gate valves 21. Then the small electromagnetic knife gate valve 21 below is opened to make the steel ball rolling body 405 fall into the bearing housing ring 401. After that, the small electromagnetic knife gate valve 21 is closed, and the small electromagnetic knife gate valve 21 above is opened to make the queued steel ball rolling bodies 405 continue to move down. Then repeat the above operations, which can realize the automatic feeding of the steel ball rolling body 405 and ensure that only one steel ball rolling body 405 is added each time, effectively preventing the problem of excessive addition of the steel ball rolling body 405 and resulting in accumulation and jamming inside the bearing housing ring 401.

[0050] As Figure 1 shown, a U-shaped horizontal loading rack 22 is provided on one side of the device frame 1. The bearing body 4 is placed on the U-shaped horizontal loading rack 22. The U-shaped horizontal loading rack 22 is located between the lower ejector rod 2 and the upper telescopic rod 5. In this embodiment, the U-shaped horizontal loading rack 22 is a horizontally placed U-shaped structure, with its opening facing away from the device frame 1 and its arc side close to the device frame 1. The loading components such as the U-shaped horizontal loading rack 22 can also be replaced by a horizontal swing arm rotating mechanism, and the horizontal swing arm rotating mechanism cooperates with the lifting arm 24 to load and unload the bearing body 4. Specifically, by setting the U-shaped horizontal loading rack 22, when loading the bearing body 4, the bearing body 4 can be placed on the U-shaped horizontal loading rack 22 and pushed into one end of the U-shaped horizontal loading rack 22 to make the bearing body 4 contact with the arc side of the U-shaped horizontal loading rack 22. Then the lower ejector rod 2 drives the ejector head 3 to lift and jack up the bearing body 4, thus avoiding direct contact between the staff and components such as the ejector head 3 and the elastic horn-shaped structure 8 without protection, reducing the operation risk.

[0051] As Figure 2 shown, a lifting arm 24 is fixedly installed on one side of the device frame 1. As Figure 12As shown in the figure, a horizontally moving cantilever 23 is fixedly installed at the telescopic end of the lifting arm 24, and the U-shaped horizontal loading rack 22 is fixedly installed on the top of the horizontally moving cantilever 23. Specifically, by setting the lifting arm 24, the lifting arm 24 can adjust the height of the U-shaped horizontal loading rack 22 through the horizontally moving cantilever 23, so as to adjust the initial height of the bearing body 4 to meet more filling requirements.

[0052] As Figure 12 As shown in the figure, a limiting slide plate 25 is slidably installed on the top of the U-shaped horizontal loading rack 22, and the limiting slide plate 25 is adapted to the bearing body 4. Specifically, by setting the limiting slide plate 25, after the bearing body 4 is placed on the U-shaped horizontal loading rack 22, the staff can hold the limiting slide plate 25 and push the limiting slide plate 25, so that the limiting slide plate 25 contacts the bearing body 4 and drives the bearing body 4 to slide to the arc edge of the U-shaped horizontal loading rack 22. Then the staff can hold the limiting slide plate 25 to limit the bearing body 4 to prevent the bearing body 4 from slipping due to mechanical vibration during the upward movement of the top head 3. At the same time, the limiting slide plate 25 plays a protective role for the staff's hands.

[0053] In summary: when the automatic steel ball adding device for automobile wheel hub bearing is in use, the bearing body 4 with steel ball rolling body 405 already loaded on the lower retaining frame 403 is first placed on the top head 3, so that the top head 3 is inserted into the inner shell ring 402 of the bearing. At this time, the upper retaining frame 404 is not loaded with steel ball rolling body 405, and the lower push rod 2 drives the top head 3 to drive the bearing body 4 to move upward, and the upper telescopic rod 5 drives the lifting slide bar 7 to synchronously descend until the elastic trumpet-shaped structure 8 at the bottom end of the lifting slide bar 7 and the C-shaped filling pressure plate 13 at the bottom end of the filling frame 11 both extend to the inside of the outer shell ring 401 of the bearing, and the elastic trumpet-shaped structure 8 is deformed under extrusion to support and fix the inner ring of the upper retaining frame 404, so that the inner shell ring 402 of the bearing is pressed tightly against the top head 3, and the upper retaining frame 404 is The elastic trumpet-shaped structure 8 is compressed, and then the first steel ball rolling body 405 is put into the bearing shell ring 401. At this time, the filling rotation motor 9 is started, and the rotating cylinder 6 is driven to rotate through the synchronous pulley group 10, thereby driving the elastic trumpet-shaped structure 8 to rotate through the lifting slide rod 7, and then driving the upper retaining frame 404 and the C-shaped filling pressure plate 13 to rotate relative to each other, so that the steel ball rolling body 405 filled on the upper retaining frame 404 rotates synchronously and contacts the higher end of the C-shaped filling pressure plate 13 in turn. As the steel ball rolling body 405 and the C-shaped filling pressure plate 13 rotate relative to each other, the pressure of the C-shaped filling pressure plate 13 on the steel ball rolling body 405 gradually increases, and the steel ball rolling body 405 is gradually pressed into the upper retaining frame along the spiral surface at the bottom of the C-shaped filling pressure plate 13. 404, and then repeat the above filling operation, so that a group of steel ball rolling bodies 405 are pressed into the upper retaining frame 404 in turn, completing the automatic filling of the upper retaining frame 404 and the steel ball rolling bodies 405, saving manpower while improving the filling speed and filling accuracy, and reducing the damage to the upper retaining frame 404 during the filling process. By setting the elastic trumpet-shaped structure 8, in the initial state, the trumpet-shaped support rod 802 slides downward under the action of gravity and the elastic force of the four surrounding trumpet-shaped spring pieces 801, so that the bottom of the trumpet-shaped support rod 802 and the bottom of the four trumpet-shaped spring pieces 801 are not at the same height. When the upper telescopic rod 5 drives the elastic trumpet-shaped structure 8 to move downward, the bottom of the trumpet-shaped support rod 802 contacts the inner shell ring 402 of the bearing. The top head 3 causes the trumpet-shaped support rod 802 to slide upward, thereby squeezing into the four trumpet-shaped spring pieces 801, and stretching the four trumpet-shaped spring pieces 801, so that the inner groove at the lower end of the outer side of the trumpet-shaped spring piece 801 contacts the limit claw 4041 on the upper retaining frame 404, thereby clamping the upper retaining frame 404, so that the upper retaining frame 404 can rotate with the elastic trumpet-shaped structure 8. When the filling is completed, the elastic trumpet-shaped structure 8 is lifted up, the trumpet-shaped support rod 802 is no longer in contact with the top head 3, and the trumpet-shaped support rod 802 falls again. The four trumpet-shaped spring pieces 801 are reunited and no longer in contact with the limit claw 4041, and the limit on the upper retaining frame 404 is automatically released. The locking and unlocking of the upper retaining frame 404 can be completed by a simple lifting action.The steps and time for positioning the upper cage 404 are omitted, further improving the filling speed. By setting the fastening bolts 14 and the fastening handles 15, the carriage 12 is locked at the bottom of the filling frame 11 through the fastening bolts 14 and the fastening handles 15. When the height of the C-shaped filling pressing plate 13 needs to be adjusted or calibrated, the fastening handle 15 can be unscrewed to release the locking of the carriage 12, enabling the carriage 12 to slide up and down along the filling frame 11. Then, the fastening handle 15 is tightened again so that the fastening handle 15 presses tightly against one side of the filling frame 11 to lock the carriage 12 again, thus completing the rapid adjustment of the height of the C-shaped filling pressing plate 13. By setting the steel ball filling channel 16, a large number of steel ball rolling elements 405 are loaded in the steel ball storage tank 18. When the lower ejector rod 2 drives the bearing body 4 to move upward, the steel ball filling pipe 17 at the bottom of the steel ball filling channel 16 will automatically extend into the bearing housing ring 401. When the steel ball rolling elements 405 need to be filled, the steel ball rolling elements 405 inside the steel ball storage tank 18 will successively enter the bearing housing ring 401 through the conveying pipe 19, the steel ball filling channel 16, and the steel ball filling pipe 17 and land on the upper cage 404 waiting for pressurization, thereby realizing the automatic filling of the steel ball rolling elements 405 without manual filling. By setting the small electromagnetic knife gate valve 21, when the steel ball rolling elements 405 need to be filled, the small electromagnetic knife gate valve 21 located below remains closed. The steel ball rolling elements 405 inside the steel ball storage tank 18 will automatically roll into the conveying pipe 19 under the vibration of the vibrator and be blocked by the small electromagnetic knife gate valve 21. At this time, the small electromagnetic knife gate valve 21 located above starts to close, and the knife gate plate inside it will be stuck between the penultimate and the first steel ball rolling element 405 to separate the two steel ball rolling elements 405. The last steel ball rolling element 405 is between the two small electromagnetic knife gate valves 21. Then, the small electromagnetic knife gate valve 21 located below is opened to allow the steel ball rolling element 405 to fall into the bearing housing ring 401. After that, the small electromagnetic knife gate valve 21 is closed, and the small electromagnetic knife gate valve 21 located above is opened to enable the queuing steel ball rolling elements 405 to continue to move downward. Then, the above operations are repeated, which can not only realize the automatic feeding of the steel ball rolling elements 405 but also ensure that only one steel ball rolling element 405 is filled each time, effectively preventing the problem of excessive filling of the steel ball rolling elements 405 resulting in accumulation and jamming inside the bearing housing ring 401. By setting the U-shaped horizontal loading rack 22, when loading the bearing body 4, the bearing body 4 can be placed on the U-shaped horizontal loading rack 22 and pushed into one end of the U-shaped horizontal loading rack 22 so that the bearing body 4 contacts the arc edge of the U-shaped horizontal loading rack 22. Then, the lower ejector rod 2 drives the top head 3 to lift and jack up the bearing body 4, thus avoiding direct contact between the staff and components such as the top head 3 and the elastic horn-shaped structure 8 in an unprotected state and reducing the operation risk. By setting the lifting arm 24, the lifting arm 24 can adjust the height of the U-shaped horizontal loading rack 22 by horizontally moving the cantilever 23, thereby adjusting the initial height of the bearing body 4.To meet more filling requirements, by setting the limit slide plate 25, after the bearing body 4 is placed on the U-shaped horizontal loading rack 22, the staff can hold the limit slide plate 25 and push the limit slide plate 25, so that the limit slide plate 25 contacts the bearing body 4 and drives the bearing body 4 to slide to the arc side of the U-shaped horizontal loading rack 22. Then the staff can hold the limit slide plate 25 to limit the bearing body 4, preventing the bearing body 4 from slipping due to mechanical vibration during the upward movement of the top head 3. At the same time, the limit slide plate 25 plays a protective role for the staff's hands.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic steel ball adding device for automotive wheel hub bearings, characterized in that, It includes a device frame (1). On one side of the bottom of the device frame (1), a vertically arranged lower ejector rod (2) is fixedly installed. The telescopic end of the lower ejector rod (2) faces upward and is fixedly installed with a top head (3). A bearing body (4) is placed on the top head (3). The bearing body (4) includes a bearing outer housing ring (401). An inner bearing ring (402) is arranged on the inner ring of the bottom of the bearing outer housing ring (401). A lower cage (403) and an upper cage (404) are sequentially arranged from bottom to top inside the bearing outer housing ring (401). A plurality of evenly distributed steel ball rolling elements (405) are sequentially placed on the lower cage (403) and the upper cage (404). The bearing body (4) is adapted to the inner bearing ring (402). On one side of the top of the device frame (1), an upper telescopic rod (5) and a filling and rotating motor (9) are fixedly installed. At the bottom of the upper telescopic rod (5), there is a filling assembly for sequentially pressing the plurality of steel ball rolling elements (405) onto the upper cage (404). The upper telescopic rod (5) is used to cooperate with the lower ejector rod (2) to apply a pre-tightening force to the bearing body (4). The filling and rotating motor (9) is used to drive the filling assembly and the bearing body (4) to rotate. The filling assembly includes a rotating cylinder (6) rotatably installed at the bottom of the upper telescopic rod (5). The telescopic end of the upper telescopic rod (5) is fixedly installed with a lifting slide rod (7). The top end of the lifting slide rod (7) is slidably installed inside the rotating cylinder (6). At the bottom end of the lifting slide rod (7), there is an elastic horn-shaped structure (8) that can deform and internally support and fix the bearing body (4). The rotating cylinder (6) and the output shaft of the filling and rotating motor (9) are provided with the same synchronous pulley set (10). On one side of the upper telescopic rod (5), a filling frame (11) is fixedly installed. At the bottom end of the filling frame (11), there is a sliding frame (12). The bottom end of the sliding frame (12) extends into the bearing outer housing ring (401) and is fixedly installed with a C-shaped filling pressing plate (13). The elastic horn-shaped structure (8) includes four horn-shaped elastic pieces (801) uniformly and fixedly installed at the bottom end of the lifting slide rod (7). The inside of the lifting slide rod (7) is a hollow structure. A horn-shaped support rod (802) is slidably installed inside the lifting slide rod (7). The bottom end of the horn-shaped support rod (802) extends between the four horn-shaped elastic pieces (801). The outer wall shape of the horn-shaped support rod (802) is adapted to the inner wall shape of the horn-shaped elastic piece (801). First limit slide holes are opened on both sides of the lifting slide rod (7). The top end of the horn-shaped support rod (802) extends between the two first limit slide holes. Limit slide nails (803) are fixedly installed on both sides of the top end of the horn-shaped support rod (802). The two limit slide nails (803) are respectively slidably installed inside the two first limit slide holes. Inner grooves are opened at the bottom of the outer wall of the horn-shaped elastic piece (801). A plurality of uniformly distributed limit claws (4041) are fixedly installed on the inner circle of the bottom of the upper cage (404). The limit claws (4041) are adapted to the inner grooves.

2. The automatic steel ball adding device for an automotive wheel hub bearing according to claim 1, characterized in that, The carriage (12) is slidably installed at the bottom end of the filling frame (11). A second limit slide hole is opened at the bottom end of the filling frame (11). A fastening bolt (14) is fixedly installed on one side of the carriage (12) facing the filling frame (11). One end of the fastening bolt (14) penetrates through the second limit slide hole and is screwed with a fastening handle (15). One side of the fastening handle (15) is closely attached to the side wall of the filling frame (11).

3. The automatic steel ball adding device for an automotive wheel hub bearing according to claim 1, characterized in that, A steel ball filling flow channel (16) is fixedly installed on one side of the device frame (1). A steel ball filling pipe (17) is fixedly installed at the bottom end of the steel ball filling flow channel (16). The bottom end of the steel ball filling pipe (17) extends into the inside of the bearing housing ring (401). A steel ball storage tank (18) is fixedly installed on one side of the device frame (1). A conveying pipe (19) is fixedly installed between the steel ball storage tank (18) and the steel ball filling flow channel (16). A cover plate (20) is placed on the top of the steel ball storage tank (18).

4. The automatic steel ball adding device for an automotive wheel hub bearing according to claim 3, wherein, Two small electromagnetic knife gate valves (21) are provided on the conveying pipe (19).

5. The automatic steel ball adding device for an automotive wheel hub bearing according to claim 1, wherein, A U-shaped horizontal loading rack (22) is provided on one side of the device frame (1). The bearing body (4) is placed on the U-shaped horizontal loading rack (22). The U-shaped horizontal loading rack (22) is located between the lower ejector rod (2) and the upper telescopic rod (5).

6. The automatic steel ball adding device for automotive hub bearings according to claim 5, wherein A lifting arm (24) is fixedly installed on one side of the device frame (1). A horizontal moving cantilever (23) is fixedly installed at the telescopic end of the lifting arm (24). The U-shaped horizontal loading rack (22) is fixedly installed on the top of the horizontal moving cantilever (23).

7. The automatic steel ball adding device for automotive wheel hub bearings according to claim 5, wherein, A limit slide plate (25) is slidably installed on the top of the U-shaped horizontal loading rack (22). The limit slide plate (25) is adapted to the bearing body (4).

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