Automatic steel ball adding device for automobile hub bearing

Abstract

The invention discloses an automatic steel ball adding device for an automobile hub bearing, and relates to the technical field of automobile part machining. The device comprises a device rack, a vertically-arranged lower ejector rod is fixedly installed on one side of the bottom of the device rack, the telescopic end of the lower ejector rod is upwards arranged and fixedly provided with an ejector head, a bearing body is placed on the ejector head and comprises a bearing outer shell ring, and a bearing inner shell ring is arranged on the inner ring of the bottom of the bearing outer shell ring; a lower retainer and an upper retainer are sequentially arranged in the bearing shell ring from bottom to top, and a plurality of uniformly distributed steel ball rolling bodies are sequentially placed on the lower retainer and the upper retainer. By arranging the filling assembly, a set of steel ball rolling bodies can be sequentially pressed into the upper retainer, automatic filling of the upper retainer and the steel ball rolling bodies is completed, manpower is saved, meanwhile, the filling speed is increased, the filling precision is improved, and damage to the upper retainer in the filling process is reduced.

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 wheel hub bearings are to bear loads and provide precise guidance for the rotation of the wheel hub. It bears both axial loads and radial loads 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 unable to proceed. It is necessary to squeeze them into the internal cage. At present, the method adopted is manual squeezing for addition. Each steel ball needs to be added with appropriate manual effort, resulting in low processing efficiency. For this reason, 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 squeezing and adding steel balls requires appropriate manual effort for each steel ball to be added, 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: 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. The bearing body is placed on the top head. The bearing body includes a bearing outer housing ring. The inner ring at the bottom of the bearing outer housing ring is provided with a bearing inner housing ring. Inside the bearing outer housing 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 housing ring. 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 assembly 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 assembly and the bearing body to rotate; The filling assembly 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 slide frame. The bottom end of the slide frame extends into the inner part of the bearing housing ring and is fixedly installed with a C-shaped filling pressing plate.

[0006] 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 inside 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 holes. Inner grooves are opened at the bottom of the outer walls of the horn-shaped elastic pieces. At the inner circle of the bottom of the upper cage, a plurality of uniformly distributed limiting claws are fixedly installed. The limiting claws are adapted to the inner grooves.

[0007] Further, the slide 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 slide 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.

[0008] Further, a steel ball filling flow channel is fixedly installed on one side of the device frame. At the bottom end of the steel ball filling flow channel, a steel ball filling pipe is fixedly installed. The bottom end of the steel ball filling pipe extends into the inner part 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.

[0009] Further, two small electromagnetic knife gate valves are arranged on the conveying pipe.

[0010] Further, a U-shaped horizontal loading rack is arranged 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 ejector rod and the upper telescopic rod.

[0011] Further, a lifting arm is fixedly installed on one side of the device frame, a horizontally moving cantilever is fixedly installed at the telescopic end of the lifting arm, and the U-shaped horizontal loading rack is fixedly installed on the top of the horizontally moving cantilever.

[0012] Further, a limiting slide plate is slidably installed on the top of the U-shaped horizontal loading rack, and the limiting slide plate is adapted to the bearing body.

[0013] The beneficial effects of the present invention are as follows: 1. By setting the filling assembly, the filling assembly cooperates with the upper telescopic rod and the filling rotating motor, so that a group of steel ball rolling elements can be successively pressed into the upper cage, completing the automatic filling of the upper cage and the steel ball rolling elements. While saving manpower, the filling speed and filling accuracy are improved, and the damage to the upper cage during the filling process is reduced; 2. By setting the elastic horn-shaped structure, when the elastic horn-shaped structure moves downward, the four horn-shaped elastic pieces are opened, the inner groove contacts the limit claw, and the upper cage is clamped, so that the upper cage can rotate together with the elastic horn-shaped structure. The locking and unlocking of the upper cage can be completed through a simple lifting action, saving the steps and time for positioning the upper cage and further improving the filling speed; 3. By setting the fastening bolts and fastening handles, the sliding frame is locked at the bottom end of the filling frame through the fastening bolts and fastening handles. When the height of the C-shaped filling pressing plate needs to be adjusted or calibrated, the fastening handle can be unscrewed to release the locking of the sliding frame, so that the sliding frame can slide up and down along the filling frame, and then the fastening handle is tightened again, so that the fastening handle tightly presses on one side of the filling frame to lock the sliding frame again, thus completing the rapid adjustment of the height of the C-shaped filling pressing plate; 4. By setting the steel ball filling channel, a large number of steel ball rolling elements are loaded in the steel ball storage tank. When the lower ejector rod drives the bearing body to move upward, the steel ball filling pipe at the bottom end of the steel ball filling channel will automatically extend into the bearing outer ring. When steel ball rolling elements need to be filled, the steel ball rolling elements inside the steel ball storage tank will successively enter the bearing outer ring through the conveying pipe, the steel ball filling channel and the steel ball filling pipe, and fall on the upper cage to wait for pressurization, so as to realize the automatic filling of the steel ball rolling elements without manual filling; 5. By setting up 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, allowing the steel ball rolling element to fall into the bearing housing ring. This can not only achieve 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 steel ball rolling elements and resulting in accumulation and jamming inside the bearing housing ring. 6. By setting up 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 horn-shaped structure without protection, reducing the operation risk. 7. By setting up a limit slide plate in the present invention, after placing the bearing body on the U-shaped horizontal loading rack, the staff can hold the limit slide plate and push it, so that the limit 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 limit 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 limit slide plate plays a protective role for the staff's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the first perspective three-dimensional structure schematic diagram of the present invention; Figure 2 is the second perspective three-dimensional structure schematic diagram of the present invention; Figure 3 is the three-dimensional structure schematic diagram of the bearing body of the present invention; Figure 4 is the internal three-dimensional structure schematic diagram of the bearing body of the present invention; Figure 5 is the three-dimensional structure schematic diagram of the cooperation between the lower ejector rod and the filling assembly of the present invention; Figure 6 is the three-dimensional structure schematic diagram of the lower ejector rod of the present invention; Figure 7 is the three-dimensional structure schematic diagram of the cooperation between the upper cage and the filling assembly of the present invention; Figure 8 is the three-dimensional structure schematic diagram of the cooperation between the upper telescopic rod and the filling assembly of the present invention; Figure 9 is the three-dimensional structure schematic diagram of the cooperation between the horn-shaped elastic piece and the horn-shaped support rod of the present invention; Figure 10 is the three-dimensional structure schematic diagram of the cooperation between the filling rack and the C-shaped filling pressing plate of the present invention; Figure 11 is a schematic three-dimensional structure diagram of the steel ball filling pipe and the steel ball storage tank of the present invention; Figure 12 is a schematic three-dimensional structure diagram of the loading rack of the present invention; Reference numerals: 1, device frame; 2, lower ejector rod; 3, ejector head; 4, bearing body; 401, bearing outer housing ring; 402, bearing inner housing 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, sliding 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 sliding plate. Specific embodiments

[0015] 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 in conjunction with 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.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying 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.

[0017] It should be noted that: similar reference numerals and letters represent 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 understood as indicating or implying relative importance.

[0018] 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 should not be construed as a limitation to the present invention.

[0019] As Figures 1 to 12 shown, the automatic steel ball adding device for an automotive 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; 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; 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; 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 set 10. As Figure 7 shown, one side of the upper telescopic rod 5 is fixedly installed with a filling frame 11. As Figure 10As shown in the figure, a sliding carriage 12 is provided at the bottom end of the filling rack 11. The bottom end of the sliding carriage 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 filling 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, the upper cage 404 is not loaded with the steel ball rolling elements 405. 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 rotate relative to the C-shaped filling pressing plate 13, 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, so that a group of steel ball rolling elements 405 are sequentially pressed into the upper cage 404, completing the automatic filling of the upper cage 404 and the steel ball rolling elements 405, saving manpower while improving the filling speed and filling accuracy, and reducing the damage to the upper cage 404 during the filling process.

[0020] As Figure 8 、 Figure 9 shown, 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 interior of the lifting slide rod 7 is a hollow structure, and 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 pieces 801. First limiting 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 limiting slide holes. Limiting slide nails 803 are fixedly installed on both sides of the top end of the horn-shaped support rod 802. The two limiting slide nails 803 are respectively slidably installed inside the two first limiting holes. Inner grooves are opened at the bottom of the outer walls of the horn-shaped elastic pieces 801. AsFigure 4 As shown, a plurality of uniformly distributed limiting claws 4041 are fixedly installed on the inner ring at the bottom of the upper cage 404, and the limiting claws 4041 are adapted to the inner groove; specifically, by setting the elastic horn-shaped structure 8, in the initial state, the horn-shaped support rod 802 slides downward under the action of gravity and the elastic force of the four surrounding horn-shaped elastic pieces 801, so that the bottom of the horn-shaped support rod 802 and the bottoms of the four horn-shaped elastic pieces 801 are not at the same height. When the upper telescopic rod 5 drives the elastic horn-shaped structure 8 to move downward, the bottom of the horn-shaped support rod 802 contacts the top 3 inside the inner housing ring 402 of the bearing, causing the horn-shaped support rod 802 to slide upward, thus squeezing into the four horn-shaped elastic pieces 801 and expanding the four horn-shaped elastic pieces 801, so that the inner groove at the lower end of the outer side of the horn-shaped elastic piece 801 contacts the limiting claws 4041 on the upper cage 404, thereby clamping the upper cage 404 tightly, enabling the upper cage 404 to rotate together with the elastic horn-shaped structure 8. After the filling is completed, the elastic horn-shaped structure 8 is lifted, the horn-shaped support rod 802 no longer contacts the top 3, the horn-shaped support rod 802 drops again, and the four horn-shaped elastic pieces 801 are recombined and no longer contact the limiting claws 4041, automatically releasing the limit on the upper cage 404. The locking and unlocking of the upper cage 404 can be completed through a simple lifting action, saving the steps and time for positioning the upper cage 404 and further improving the filling speed.

[0021] As Figure 10 shown, the carriage 12 is slidably installed at the bottom end of the filling frame 11. A second limiting sliding hole is opened at the bottom end of the filling frame 11. One side of the carriage 12 facing the filling frame 11 is fixedly installed with a fastening bolt 14. 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 frame 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 frame 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 frame 11, and 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, thereby completing the rapid adjustment of the height of the C-shaped filling pressing plate 13.

[0022] As Figure 5 shown, a steel ball filling flow channel 16 is fixedly installed on one side of the device frame 1. As Figure 11As shown in the figure, a steel ball filling pipe 17 is fixedly installed at the bottom end of the steel ball filling 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 channel 16. In this embodiment, a vibrator can be arranged 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, preventing the steel ball rolling elements 405 from jamming at the port of the conveying pipe 19 when feeding. A cover plate 20 is placed on the top of the steel ball storage tank 18. Specifically, by providing 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 end of the steel ball filling 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 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 fall on the upper cage 404 to wait for pressurization, thus realizing the automatic filling of the steel ball rolling elements 405 without manual filling.

[0023] As Figure 11 shown, two small electromagnetic knife gate valves 21 are arranged 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 element 405. Specifically, by providing the small electromagnetic knife gate valves 21, when it is necessary to fill the steel ball rolling elements 405, the lower small electromagnetic knife gate valve 21 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 upper small electromagnetic knife gate valve 21 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 lower small electromagnetic knife gate valve 21 is opened to make the steel ball rolling element 405 fall into the bearing housing ring 401. After that, the small electromagnetic knife gate valve 21 is closed, and the upper small electromagnetic knife gate valve 21 is opened to make the queuing steel ball rolling elements 405 continue to move down. Then repeat the above operation, 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 and causing accumulation and jamming inside the bearing housing ring 401.

[0024] As Figure 1As shown in the figure, 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 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 in an unprotected state and reducing the operation risk.

[0025] As Figure 2 shown in the figure, a lifting arm 24 is fixedly installed on one side of the device frame 1. As Figure 12 shown in the figure, a horizontally 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 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.

[0026] As Figure 12 shown in the figure, a limiting slide plate 25 is slidably installed on the top of the U-shaped horizontal loading rack 22. 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 side 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 ejector head 3. At the same time, the limiting slide plate 25 plays a protective role for the staff's hands.

[0027] 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 step and time for positioning the upper cage 404 are omitted, further improving the filling speed. By setting the fastening bolts 14 and the fastening handle 15, the carriage 12 is locked at the bottom end of the filling frame 11 through the fastening bolts 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 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, thereby 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 end of the steel ball filling 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 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 fall 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 it is necessary to fill the steel ball rolling elements 405, 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 second last 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 below is opened to make the steel ball rolling element 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 queuing steel ball rolling elements 405 continue to move downward. Then, the above operation is 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 and causing 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 ejector head 3 to lift up to lift the bearing body 4, thereby 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. 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 edge 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.

[0028] 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. The automatic steel ball adding device for automobile wheel hub bearings is characterized by: The device comprises a frame (1), a lower push rod (2) arranged vertically is fixedly mounted on one side of the bottom of the frame (1), a push head (3) is arranged upward and fixedly mounted on the telescopic end of the lower push rod (2), and a bearing body (4) is placed on the push head (3); The bearing body (4) comprises a bearing outer shell ring (401), the bottom inner ring of the bearing outer shell ring (401) is provided with a bearing inner shell ring (402), the interior of the bearing outer shell ring (401) is provided with a lower retaining frame (403) and an upper retaining frame (404) from bottom to top, a plurality of evenly distributed steel ball rolling bodies (405) are placed on the lower retaining frame (403) and the upper retaining frame (404) in sequence, and the bearing body (4) is adapted to the bearing inner shell ring (402); An upper telescopic rod (5) and a filling rotary motor (9) are fixedly mounted on one side of the top of the device frame (1); a filling assembly for sequentially pressing a plurality of the steel ball rolling bodies (405) into the upper retaining frame (404) is provided at the bottom of the upper telescopic rod (5); the upper telescopic rod (5) is used to cooperate with the lower ejector rod (2) to apply a preload force to the bearing body (4); and the filling rotary motor (9) is used to drive the filling assembly and the bearing body (4) to rotate; The filling assembly comprises a rotating cylinder (6) rotatably mounted on the bottom of the upper telescopic rod (5); a lifting slide rod (7) is fixedly mounted on the telescopic end of the upper telescopic rod (5); the top end of the lifting slide rod (7) is slidably mounted inside the rotating cylinder (6); the bottom end of the lifting slide rod (7) is provided with an elastic trumpet-shaped structure (8) capable of deformation and internally supporting and fixing the bearing body (4); the same synchronous pulley set (10) is provided on the output shafts of the rotating cylinder (6) and the filling rotating motor (9); a filling frame (11) is fixedly mounted on one side of the upper telescopic rod (5); a slide rack (12) is provided at the bottom end of the filling frame (11); the bottom end of the slide rack (12) extends to the inside of the bearing housing ring (401) and is fixedly mounted with a C-shaped filling pressure plate (13).

2. The automatic steel ball adding device for automobile wheel hub bearing according to claim 1 is characterized in that: The elastic trumpet-shaped structure (8) comprises four trumpet-shaped spring pieces (801) uniformly fixedly mounted 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 mounted 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) matches the inner wall shape of the trumpet-shaped spring piece (801); and first limiting openings 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, and limiting sliding pins (803) are fixedly installed on both sides of the top end of the trumpet-shaped support rod (802), and the two limiting sliding pins (803) are respectively slidably installed inside the two first limiting holes, and the bottom of the outer wall of the trumpet-shaped spring sheet (801) is provided with an inner groove, and 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 grooves.

3. The automatic steel ball adding device for automobile wheel hub bearing according to claim 1 is characterized in that: The slide (12) is slidably mounted on the bottom end of the filling frame (11); a second limiting sliding hole is opened at the bottom end of the filling frame (11); a fastening bolt (14) is fixedly mounted on the side of the slide (12) facing the filling frame (11); one end of the fastening bolt (14) passes through the second limiting sliding hole and is screwed to a fastening handle (15); one side of the fastening handle (15) is in close contact with the side wall of the filling frame (11).

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

5. The automatic steel ball adding device for automobile wheel hub bearing according to claim 4 is characterized in that: Two small electromagnetic knife gate valves (21) are arranged on the delivery pipe (19).

6. The automatic steel ball adding device for automobile wheel hub bearing according to claim 1, characterized in that: 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), and the U-shaped horizontal loading rack (22) is located between the lower push rod (2) and the upper telescopic rod (5).

7. The automatic steel ball adding device for automobile wheel hub bearing according to claim 6, characterized in that: A lifting arm (24) is fixedly mounted on one side of the device frame (1); a horizontal movable cantilever (23) is fixedly mounted on the telescopic end of the lifting arm (24); and the U-shaped horizontal loading rack (22) is fixedly mounted on the top of the horizontal movable cantilever (23).

8. The automatic steel ball adding device for automobile wheel hub bearing according to claim 6, characterized in that: A limiting slide plate (25) is slidably mounted on the top of the U-shaped horizontal loading rack (22), and the limiting slide plate (25) is adapted to the bearing body (4).

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