A ball-filling device for double-row bearings and its usage method

Abstract

This invention relates to the field of bearing ball filling technology, and discloses a ball filling device and method for double-row bearings. The ball filling device includes a support plate, an L-plate slidably disposed on the support plate, a first support plate for lifting and adjusting, an insertion rod, a conveying pipe and a pipe arrangement assembly, a workstation plate, and a second crescent ring. The tilt angle between the support plate and the workstation plate is adjusted by the tilting part. Through a unique anti-missing part, air generated by the mechanism is used to blow away foreign objects such as paper scraps adhering to the surface of the steel balls before they enter the ball lowering channel, effectively removing channel blockage caused by foreign objects. This ensures the accurate quantity of balls filled each time, significantly improving the pass rate of double-row bearing assembly and the reliability of automated production.

Description

Technical Field

[0001] This invention relates to the field of bearing ball filling technology, specifically to a double-row bearing ball filling device and its usage method. Background Technology

[0002] Bearings are indispensable key components in modern machinery, and the assembly process during their production is crucial to the performance and lifespan of the final product. Double row bearings are widely used due to their ability to withstand large combined radial and axial loads. A core process in the automated or semi-automated assembly of double row bearings is the precise and efficient filling of a specified number of steel balls into the raceway formed between the inner and outer rings.

[0003] Existing bearing ball-filling devices typically include stations for positioning the inner and outer rings of the bearing, pipes for conveying the steel balls, and valves or pin mechanisms for controlling the descent of the steel balls. However, in actual production, during transportation and storage, the packaging (such as cardboard boxes and rust-proof paper) may generate small pieces of paper or fibrous impurities. These lightweight impurities easily adhere to the surface of the steel balls during unpacking or loading due to static electricity or surface oil film. When steel balls carrying these impurities enter the narrow conveying pipes or lowering pipes of the ball-filling device, the impurities easily accumulate and cause channel blockage, or directly jam the steel balls, preventing them from falling smoothly. This situation results in a shortage of steel balls in single or double rows of raceways, producing defective bearings that severely affect the yield rate and operational stability of the production line. Therefore, how to avoid ball-filling failures caused by foreign matter adhering to the surface of the steel balls is a pressing problem to be solved in the field of automated bearing assembly. Summary of the Invention

[0004] This invention provides a double-row bearing ball filling device and its usage method to solve the problem that existing bearing ball filling devices are prone to clogging the ball lowering channel due to lightweight foreign objects such as packaging paper scraps attached to the surface of the steel balls during the filling process, resulting in inaccurate ball filling quantity and low product qualification rate.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] In a first aspect, a double-row bearing ball-filling device includes a support plate and two L-plates slidably disposed on the support plate. A first support plate is vertically mounted on the front of the L-plate, and an insertion rod is vertically mounted on the front of the first support plate. A conveying pipe is fixed to the front of the first support plate, one end of which is connected to a drain pipe. A lower ball pipe is fixed to the outer side of the drain pipe away from the conveying pipe, and the lower ball pipe is located outside the insertion rod to cooperate with the insertion pipe in sealing the drain pipe. A workstation plate is fixed to the support plate and is located in front of the first support plate. A second crescent ring is rotatably and vertically mounted above the workstation plate. Conveying rails are provided on both sides of the workstation plate to convey bearings. The device also includes:

[0007] The tilting part is located below the support plate and is rotatably connected to the support plate. It includes a support connector rotatably connected to the support plate and a tilting member rotatably connected to the support connector via a connecting component. The tilting member is connected to the bottom of the support plate to adjust the tilt of the support plate and the work station plate.

[0008] The anti-deficiency part is symmetrically arranged on the outside of the lower tube and connected to the insertion rod. It includes a connecting rod arranged on the outside of the lower tube and fixed to the insertion rod, and a corrugated airbag connected to the lower end of the connecting rod. It also includes a hollow sleeve that is fixed to the inside of the tube and a plurality of oblique air holes that are evenly opened through the inside of the hollow sleeve. The hollow sleeve is connected to the corrugated airbag to prevent packaging paper scraps from getting stuck in the steel balls and causing a shortage of steel balls.

[0009] The anti-scratch section, located inside the first crescent ring and in contact with the anti-scratch section, includes a capsule fixed to the inner top wall of the first crescent ring by a limiting plate and located above the corrugated air bladder to store anti-rust oil, multiple extrusion heads that penetrate the corrugated air bladder and the lower tube, and a cotton ring fixed to the lower end of the insertion rod to prevent scratching the lower tube and ensure smooth ball dropping.

[0010] Furthermore, the support member includes:

[0011] Two rotating plates are symmetrically fixed below the support plate.

[0012] The T-plate has two plates, which are respectively set below the two rotating plates, and the upper end of the plate is U-shaped and rotatably connected to the rotating plate;

[0013] The support frame is fixed to the lower end of the T-plate and has an opening in the middle.

[0014] Furthermore, the tilting member includes:

[0015] A support frame is fixed between the two T-plates;

[0016] The electric telescopic pole has its fixed end installed inside the support frame.

[0017] The fifth slide rail is fixed below the support plate;

[0018] The pressure plate is slidably connected to the outside of the fifth slide rail and extends to the bottom of the electric telescopic rod;

[0019] The connecting part is located below the support plate and has a movable through-opening.

[0020] Furthermore, the connecting component includes:

[0021] The base frame has two parts, which are symmetrically fixed below the support plate and located on both sides of the pressure plate, and are movably connected through the opening;

[0022] The second stop is fixed to the outside of the base frame and located below the support frame;

[0023] A telescopic plate is set between the two base frames, with its upper end rotatably connected to the support plate and its lower end movable through an opening.

[0024] Furthermore, the anti-deficiency part includes a blower assembly disposed on the pipe and the first crescent ring, and a connecting member connected to the blower assembly and the insert rod, the connecting member comprising:

[0025] The connecting ring is fixed to the outside of the insertion rod and located above the lower tube;

[0026] The support rod is fixed to the outside of the connecting ring and is fixedly connected to the connecting rod;

[0027] The base plate is fixed to the lower end of the corrugated airbag and is fixedly connected to the lower end of the connecting rod.

[0028] Furthermore, the pressure blow molding component includes:

[0029] An arc plate is fixed to the upper end of the corrugated airbag, and the arc plate is in contact with the lower end of the capsule.

[0030] The trachea passes through the first crescent ring and its lower end passes through the arc plate and connects to the corrugated airbag.

[0031] The opening is made by passing through the lower end of the first crescent ring;

[0032] The blower components are installed through the pipe and are coaxial with the pipe.

[0033] Furthermore, the blower component includes:

[0034] A hollow cylinder is installed through the pipe, and its inner wall is flush with the inner wall of the pipe.

[0035] The oblique air hole is connected to the inside of the hollow cylinder;

[0036] The upper end of the trachea is connected to the lower part of the hollow cylinder and communicates with the oblique air hole;

[0037] The passageway has multiple sections, is integrally formed with the hollow cylinder, and is adjacent to the oblique air holes.

[0038] Furthermore, the anti-scratching part includes an injection nozzle and a support reservoir. The injection nozzle passes through the first crescent ring, and the support reservoir is disposed within the first crescent ring and communicates with the injection nozzle. The injection nozzle includes:

[0039] The extrusion head has multiple cone-shaped structures. One end passes through the capsule and the first crescent ring on the side near the lower tube, and the other end passes through the lower tube and is flush with the inner wall of the lower tube.

[0040] Two one-way valves are provided, one of which is disposed above the first crescent ring and communicates with the capsule, and the other is disposed through the bottom plate and communicates with the corrugated airbag.

[0041] Connecting pipe, which is connected to the input end of the check valve;

[0042] The support and storage component includes:

[0043] The limiting plate is fixed to the inner top wall of the first crescent ring and is located on the side of the trachea near the transparent tube.

[0044] The capsule is fixedly connected to the protective plate and the limiting plate;

[0045] The lower end of the capsule bends and extends toward the arc plate;

[0046] The cotton ring is fixed to the outside of the insert rod, near the lower end of the insert rod, and in contact with the extrusion head.

[0047] Furthermore, an L-shaped foot is fixed to the support plate, and the L-shaped foot is located between two L-plates. A frame plate is fixed to the L-shaped foot, and a connecting plate and a fourth slide rail are fixed to the frame plate. The connecting plate is located behind the fourth slide rail. An electric rod is slidably connected to the fourth slide rail. A second cylinder is fixed to the outside of the fixed end of the electric rod, and the telescopic end of the second cylinder is fixed to the connecting plate. A top plate is fixed to the telescopic end of the electric rod, and two brackets are fixed to the top plate. A servo motor is respectively installed through the two brackets. A pulley is connected to the drive end of the servo motor, and a belt is sleeved on the outside of the pulley. One of the servo motors is located above the second crescent ring, and the second crescent ring is fixedly connected to the shaft of the pulley connected to the drive end of one of the servo motors.

[0048] Secondly, a method of using a double-row bearing ball-filling device, the method of using the double-row bearing ball-filling device comprising:

[0049] Install the support frame onto the workbench using the fixing components, ensuring that the workstation tray is positioned between the two conveyor rails and aligned with them.

[0050] The outer and inner rings of the bearing are moved along the conveyor rail to the workstation plate, so that they abut against the first stop and the abutment plate to complete the positioning.

[0051] The electric actuator extends, pushing the T-block into the groove of the shaped plate, which in turn moves the L-plate forward along the first slide rail, aligning the gap between the lower ball tube and the inner and outer rings.

[0052] The control lifting rod moves down, pushing the first support plate to drive the lower ball tube and the first crescent ring to insert between the inner and outer rings;

[0053] Steel balls are injected into the delivery pipe, and the steel balls are temporarily stored outside the lower ball pipe through the pipe and hollow sleeve;

[0054] The first cylinder is controlled to contract, which drives the insert rod to move upward, releasing the blockage on the pipe. The steel ball falls through the lower ball tube into the groove between the inner and outer rings to complete the first row of filling.

[0055] When the insertion rod moves upward, it pulls the base plate to compress the corrugated airbag through the linkage of the connecting ring, support rod and connecting rod;

[0056] After the corrugated airbag is compressed, the internal gas enters the hollow sleeve through the air tube, and is sprayed obliquely onto the surface of the steel ball through the slanted air hole, blowing away the sticky packaging paper scraps and discharging them through the passage.

[0057] After the single-row filling is completed, the first cylinder is extended and the insert rod moves down to block the pipe;

[0058] Next, rotate and adjust the angle of the second crescent ring and move it down, inserting it between the inner and outer rings. Then, control the insertion rod to move up again, so that the steel ball falls through the lower ball tube into the channel between the inner and outer rings to complete the secondary ball filling.

[0059] The above-described solution of the present invention has at least the following beneficial effects:

[0060] By incorporating a unique anti-missing mechanism, air generated by a linked mechanism is used to purge the steel balls before they enter the lower ball channel. This effectively removes foreign objects such as paper scraps adhering to the surface of the steel balls, fundamentally preventing channel blockage caused by foreign objects. This ensures the accuracy of the number of balls filled each time, significantly improving the pass rate of double-row bearing assembly and the reliability of automated production. Specifically, this invention utilizes the upward movement of the insertion rod (i.e., the action of preparing to lower the ball) to link a corrugated airbag to generate compressed airflow. This airflow passes through a specially designed hollow sleeve and oblique air holes, precisely and efficiently purifying the surface of the steel balls at the critical node when they are about to enter the lower ball tube. This design cleverly integrates the impurity removal function with the ball filling action, eliminating the need for additional power sources and complex control programs. The compact structure achieves functional synergy, ensuring a smooth lower ball process and thus guaranteeing the quality of the final product. Attached Figure Description

[0061] Figure 1 This is an overall perspective view of the double-row bearing ball filling device provided in an embodiment of the present invention;

[0062] Figure 2 This is a schematic cross-sectional plan view of the base frame provided in an embodiment of the present invention;

[0063] Figure 3 A perspective view of several types of rods provided in the embodiments of the present invention;

[0064] Figure 4 Provided for embodiments of the present invention Figure 1 Schematic diagram of the structure at point A in the diagram;

[0065] Figure 5 Provided for embodiments of the present invention Figure 3 Schematic diagram of the structure at point B in the diagram;

[0066] Figure 6A perspective view of the first cylinder, lower ball tube, and first crescent ring assembly provided in an embodiment of the present invention;

[0067] Figure 7 This is a three-dimensional structural diagram of the combination of the lower tube, the insertion rod, and the first crescent ring provided in an embodiment of the present invention;

[0068] Figure 8 Provided for embodiments of the present invention Figure 7 A schematic diagram of the structure at point C in the diagram;

[0069] Figure 9 This is a cross-sectional plan view of the hollow sleeve provided in an embodiment of the present invention;

[0070] Figure 10 Provided for embodiments of the present invention Figure 7 The structural diagram at point D in the diagram.

[0071] Explanation of reference numerals in the attached figures:

[0072] In the diagram: 1. Support plate; 2. First slide rail; 3. First slider; 4. L-plate; 5. Second slide rail; 6. Second slider; 7. Lifting rod; 8. First support plate; 9. Third slide rail; 10. First cylinder; 11. Second support plate; 12. Lower ball tube; 13. Insert rod; 14. Fixed plate; 15. Pipeline; 16. Conveying pipe; 17. Workstation plate; 18. First stop block; 19. Support plate; 20. Outer ring; 21. Inner ring; 22. L-foot; 23. N rod; 24. Fixed plate; 25. Electric actuator; 26. R-shaped rod; 27. Frame plate; 28. Connecting plate; 29. ​​Fourth slide rail; 30. Fourth slider; 31. T-block; 32. Electric rod; 33. Second cylinder; 34. Top plate; 35. 36. Bracket; 37. Servo motor; 38. Pulley; 39. Belt; 40. Second crescent ring; 41. Conveyor rail; 42. Turning plate; 43. T-plate; 44. Support frame; 45. Support bracket; 46. Electric telescopic rod; 47. Pressure plate; 48. Base frame; 49. Fifth slide rail; 50. Second stop block; 51. Telescopic plate; 52. First crescent ring; 53. Through port; 54. Connecting ring; 55. Support rod; 56. Connecting rod; 57. Base plate; 58. Corrugated airbag; 59. Capsule; 60. Extrusion head; 61. One-way valve; 62. Connecting pipe; 63. Groove; 64. Arc plate; 65. Cotton ring; 66. Air pipe; 67. Hollow sleeve; 68. Slanted air hole; 69. Through passage; 60. Limiting plate. Detailed Implementation

[0073] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0074] like Figures 1 to 10 As shown, an embodiment of the present invention provides a double-row bearing ball filling device, including a support plate 1 and two L-plates 4 slidably disposed on the support plate 1. A first support plate 8 is raised and lowered on the front of the L-plate 4, and an insertion rod 13 is raised and lowered on the front of the first support plate 8. A conveying pipe 16 is fixed on the front of the first support plate 8. One end of the conveying pipe 16 is connected to a drain pipe 15. A lower ball pipe 12 is fixed to the outer side of the end of the drain pipe 15 away from the conveying pipe 16, and the lower ball pipe 12 is located outside the insertion rod 13 to cooperate with the insertion pipe to block the drain pipe 15. A workstation plate 17 is fixed on the support plate 1, and the workstation plate 17 is located in front of the first support plate 8. A second crescent ring 39 is rotatably and raised and lowered above the workstation plate 17. Conveying rails 40 are provided on both sides of the workstation plate 17 to convey bearings. The device also includes:

[0075] The tilting part is located below the support plate 1 and is rotatably connected to the support plate 1. It includes a support connector rotatably connected to the support plate 1 and a tilting member rotatably connected to the support connector through a connecting component. The tilting member is connected to the lower part of the support plate 1 to adjust the tilt of the support plate 1 and the work station plate 17.

[0076] The anti-deficiency part is symmetrically arranged on the outside of the lower tube 12 and connected to the insertion rod 13. It includes a connecting rod 55 arranged on the outside of the lower tube 12 and fixed to the insertion rod 13, and a corrugated airbag 57 connected to the lower end of the connecting rod 55. It also includes a hollow sleeve 66 that is fixedly connected to the inside of the pipe 15, and a plurality of oblique air holes 67 and channels 68 that are evenly opened through the hollow sleeve 66. The hollow sleeve 66 is connected to the corrugated airbag 57 to prevent packaging paper scraps from getting stuck in the steel balls and causing a shortage of steel ball filling.

[0077] The anti-scratch section, located inside the first crescent ring 51 and in contact with the anti-scratch section, includes a capsule 58 fixed to the inner top wall of the first crescent ring 51 and located above the corrugated air bladder 57 to store anti-rust oil, a plurality of extrusion heads 59 penetrating the corrugated air bladder 57 and the lower ball tube 12, and a cotton ring 64 fixed to the lower end of the insertion rod 13 to prevent scratching the lower ball tube 12 and ensure smooth ball dropping process.

[0078] Specifically, the pipe 15 is made of transparent material. The support plate 1 is symmetrically fixed with a first slide rail 2. The outer side of the first slide rail 2 is slidably connected with a first slider 3, and the first slider 3 is fixedly connected with an L plate 4. The front of the L plate 4 is fixed with a second slide rail 5. The outer side of the second slide rail 5 is slidably connected with a second slider 6, and the second slider 6 is fixedly connected with a first support plate 8. The front of the first support plate 8 is fixed with a third slide rail 9. The outer side of the third slide rail 9 is slidably connected with a second support plate 11. The front of the first support plate 8 is fixed with a first cylinder 10, and the telescopic end of the first cylinder 10 is fixedly connected to the second support plate 11. The second support plate 11 is fixedly connected with a plug rod 13. The front of the first support plate 8 is fixed with a fixed plate 14 through a fixing component. The pipe 15 passes through the fixed plate 14 and is fixedly connected. The workstation plate 17 is fixed with a first stop block 18 and a stop plate 19. The stop plate 19 is located near the first support plate 8. The support plate 1 is fixed with an N rod 23, and the top of the N rod 23 is fixedly connected to a fixed plate 24.

[0079] The double-row bearing ball filling device also includes:

[0080] Several type plates are fixed on L plate 4 and located behind the first support plate 8;

[0081] Electric actuator 25 is fixed above support plate 1 and is located in the direction away from the first support plate 8 of the several-shaped plate;

[0082] The groove 62 is formed at one end of the plate near the electric actuator 25;

[0083] T-block 31 is fixed to the telescopic end of electric actuator 25 and located in groove 62.

[0084] Specifically, the shaped plate can provide opening space for the groove 62 with the support of the L plate 4, while the shaped rod 26 can stably support the T block 31.

[0085] In practical application, the measured inner ring 21 and outer ring 20 need to be matched with radial clearance by the control system. Then, they are moved by the conveyor rail 40 to the workstation 17 for loading steel balls. Next, the inner ring 21 and outer ring 20 need to be positioned on the workstation 17. Then, the first crescent ring 51 limits the outer ring 20, and the first row (lower group) of steel balls is loaded through the lower ball tube 12. Then, the servo motor 36 and electric rod 32 are controlled to drive the second crescent ring 39 to rotate and place it between the inner ring 21 and outer ring 20, so that the first crescent ring 51 and the second crescent ring 39... The toothed rings 39 form a ring, and the lower ball tube 12 causes the steel balls to slide down and be loaded into the second row (the upper group) of steel balls. The steel balls can roll freely in the groove formed between the inner ring 21 and the outer ring 20 and on the first crescent ring 51 and the second crescent ring 39. Then, the electric rod 32 is controlled to drive the second crescent ring 39 to exit from between the outer ring 20 and the inner ring 21 and separate from the first crescent ring 51. The outer ring 20 is reset, and the assembly is completed. At the same time, during the ball filling process, the vibrator can be used to assist in the vibration so that the steel balls are evenly and neatly arranged on the crescent ring and in the groove formed between the inner ring 21 and the outer ring 20.

[0086] The worker can install the ball-filling device at the work site using the fixed components and support frame 43, placing the work station 17 between the two conveyor rails 40. This allows external force to push the outer ring 20 and inner ring 21 of the bearing to be transported horizontally. The outer ring 20 and inner ring 21 that need to be filled are moved along the conveyor rail 40 to be positioned between the first stop 18 and the abutment plate 19. At the same time, bearing steel balls are conveyed into the conveyor pipe 16. Then, with the support of the N rod 23, the fixed plate 24, and the support plate 1, the electric push rod 25 is controlled to extend, so that the electric push rod 25 is engaged with the groove 62 through the T block 31. Pushing the lever 26 forward causes it to push the first slider 3 along the first slide rail 2 forward via the L-plate 4. Simultaneously, the L-plate 4, along with the first slider 3, moves the second slide rail 5, the second slider 6, and the first support plate 8 forward. The first support plate 8, via the first cylinder 10 and the second support plate 11, moves the insert rod 13 forward. Simultaneously, the first support plate 8, via the fixed plate 14, moves the pipe 15 and the lower ball tube 12 forward, aligning the gap between the lower ball tube 12 and the outer ring 20 and inner ring 21. At the same time, the bearing balls need to be inserted... The ball bearings are conveyed through the conveying pipe 16 into the drain pipe 15, and the lower ball tube 12 and the insertion rod 13 work together to prevent the bearing balls in the drain pipe 15 from being discharged. Then, the lifting rod 7 is extended, so that the lifting rod 7, supported by the L plate 4, pushes the second slider 6 downward along the second slide rail 5. The second slider 6 can drive the first support plate 8 to move downward. At the same time, the first support plate 8 will drive the second support plate 11, the lower ball tube 12, the insertion rod 13, the drain pipe 15 and the conveying pipe 16 to move downward together through the first cylinder 10 and the fixed plate 14, so that the lower ball tube 12 can be inserted into the inner ring 21 and the outer ring 20. Then, the first cylinder 10 is controlled to retract, so that the extension end drives the insertion rod 13 to move upward along the lower ball tube 12 through the second support plate 11, so that the lower end of the insertion rod 13 moves above the output end of the pipe 15, thereby removing the obstruction to the bearing steel balls in the pipe 15, allowing the bearing steel balls to be discharged from the pipe 15 into the lower ball tube 12, and under the action of gravity, they pass through the lower ball tube 12 and are discharged between the inner ring 21 and the outer ring 20 for ball filling. After a single ball filling is completed, the first cylinder 10 is controlled to extend, so that the insertion rod 13 moves downward along the lower ball tube 12 to block the pipe 15.

[0087] In a preferred embodiment of the present invention, the support member includes:

[0088] Two rotating plates 41 are symmetrically fixed below the support plate 1.

[0089] T-plates 42 are two in number, respectively located below the two rotating plates 41, and their upper ends are U-shaped and rotatably connected to the rotating plates 41;

[0090] The support frame 43 is fixed to the lower end of the T-plate 42 and has an opening in the middle.

[0091] Specifically, the support plate 1 can provide stable support for the rotating plate 41, the T plate 42 can provide rotational support for the rotating plate 41, the support frame 43 can provide stable support for the T plate 42, and the workers can use the fixing parts to fix the support frame 43 at the work site.

[0092] The tilting component includes:

[0093] The support frame 44 is fixed between the two T-plates 42;

[0094] The electric telescopic rod 45 has its fixed end installed inside the support frame 44;

[0095] The fifth slide rail 48 is fixed below the support plate 1;

[0096] The pressure plate 46 is slidably connected to the outside of the fifth slide rail 48 and extends to the bottom of the electric telescopic rod 45;

[0097] The connecting part is located below the support plate 1 and has a movable through opening.

[0098] Specifically, the support frame 44 provides stable support for the fixed end of the electric telescopic rod 45 under the support of the T plate 42. The support plate 1 provides support for the fifth slide rail 48, and the fifth slide rail 48 provides support for the pressure plate 46. The telescopic end of the electric telescopic rod 45 can push the pressure plate 46 downward when it extends. The pressure plate 46 is fixed to the fifth slide rail 48 by friction and can slide along the fifth slide rail 48 to adjust its position under the action of external force to overcome friction. The pressure plate 46 can transmit external force to the support plate 1 through the fifth slide rail 48, so that the support plate 1 can drive the rotating plate 41 and the base frame 47 to rotate clockwise around the upper end of the T plate 42 under the support of the T plate 42.

[0099] The connecting parts include:

[0100] The base frame 47 has two parts, which are symmetrically fixed below the support plate 1 and located on both sides of the pressure plate 46, and are movably connected through the opening;

[0101] The second stop 49 is fixed to the outside of the base frame 47 and located below the support frame 43;

[0102] The telescopic plate 50 is set between the two base frames 47, and its upper end is rotatably connected to the support plate 1, while its lower end has a movable through opening.

[0103] Specifically, the base frame 47 can provide stable support for the second stop 49 under the support of the support plate 1, the support frame 43 can provide a through passage for the base frame 47 and can provide a stop for the second stop 49, thereby providing a limit for the clockwise rotation of the support plate 1. The operator can use the fixing parts to fix the lower end of the telescopic plate 50 at the work site, and it can extend and retract under the action of external force. The support frame 43 can provide a stop support for the lower end of the pressure plate 46 away from the telescopic end of the electric telescopic rod 45, so that the pressure plate 46 can provide support for the support plate 1 under the support of the support frame 43, so that the support plate 1 can maintain an inclined state to support the work station plate 17, thereby using the inclination and gravity to provide positioning for the bearing steel balls filled in the inner ring 21 and the outer ring 20.

[0104] In practical application, after the ball filling is completed, the electric telescopic rod 45 needs to be extended to push the pressure plate 46 downwards. Under the action of external force, the pressure plate 46 pushes the support plate 1 and the rotating plate 41 to rotate clockwise under the support of the T plate 42 via the fifth slide rail 48. At the same time, the support plate 1 will drive the base frame 47 to rotate together, so that the base frame 47 can drive the second stop 49 to rotate together to contact the bottom of the support frame 43. Meanwhile, the telescopic end of the telescopic plate 50 will rotate under the support of the support plate 1, so that the support plate 1 will drive the telescopic plate 50 to extend during the rotation, so that the work station plate 17 can rotate clockwise to a horizontal state. At the same time, the balls filled into the inner ring 21 and the outer ring 20 will roll and distribute in the raceway formed between the inner ring 21 and the outer ring 20, and make the work station plate 17 flush with the conveyor rail 40, which facilitates the subsequent conveying of the inner ring 21 and the outer ring 20 of the bearing that have been filled and those that have not been filled.

[0105] In a preferred embodiment of the present invention, the anti-deficiency part includes a pressure blowing member disposed on the pipe 15 and the first crescent ring 51, and a connecting member connected to the pressure blowing member and the insertion rod 13, the connecting member including:

[0106] The connecting ring 53 is fixed to the outside of the insertion rod 13 and is located above the lower ball tube 12;

[0107] Support rod 54 is fixed to the outside of connecting ring 53 and is fixedly connected to connecting rod 55;

[0108] The base plate 56 is fixed to the lower end of the corrugated airbag 57 and is fixedly connected to the lower end of the connecting rod 55.

[0109] Specifically, the insert rod 13 can provide stable support for the connecting ring 53, the connecting ring 53 can provide support for the support rod 54, the support rod 54 can provide support for the connecting rod 55, and the insert rod 13 can drive the base plate 56 to move together through the connecting ring 53, the support rod 54 and the connecting rod 55. The base plate 56 can use external force to squeeze the corrugated airbag 57 to fold and retract.

[0110] Pressure blown parts include:

[0111] An arc plate 63 is fixed to the upper end of the corrugated airbag 57, and the arc plate 63 is in contact with the lower end of the capsule 58.

[0112] The trachea 65 passes through the first crescent ring 51 and its lower end passes through the arc plate 63 and communicates with the corrugated airbag 57;

[0113] The opening 52 extends through the lower end of the first crescent ring 51;

[0114] The blower component is installed through the pipe 15 and is coaxial with the pipe 15.

[0115] Specifically, the connecting rod 55 provides stable support for the base plate 56, the first crescent ring 51 provides movement space for the base plate 56, the base plate 56 provides stable support for the corrugated airbag 57, the corrugated airbag 57 provides storage space for gas, the first crescent ring 51 provides opening space for the opening 52, the opening 52 provides a channel for outside air to enter the first crescent ring 51, so that air can be drawn into the corrugated airbag 57 from the one-way valve 60 below it, and the air pipe 65 provides airflow guidance and provides a channel for the air in the corrugated airbag 57 to be discharged into the hollow cylinder.

[0116] The blower components include:

[0117] A hollow cylinder is installed through the pipe 15, and its inner wall is flush with the inner wall of the pipe 15.

[0118] The inclined air hole 67 is connected to the inside of the hollow cylinder;

[0119] The upper end of the trachea 65 is connected to the lower part of the hollow cylinder and communicates with the oblique air hole 67;

[0120] Multiple passageways 68 are integrally formed with the hollow cylinder and are adjacent to the inclined air holes 67.

[0121] Specifically, the pipe 15 provides stable support for the hollow cylinder. The hollow cylinder is hollow inside, which provides a passage for air circulation and provides space for the inclined air hole 67. The inclined air hole 67 can provide an exhaust passage and guide for the air inside the hollow cylinder under pressure, so that the air can be sprayed out at an angle away from the lower ball tube 12. The inner side of the hollow cylinder and the pipe 15 can provide a rolling passage and support for the steel ball, so that the steel ball can move upward from the lower end of the insertion rod 13 to above the pipe 15 and then enter the lower ball tube 12.

[0122] In practical application, the one-way valve 60 provided on the base plate 56 can prevent the air in the corrugated airbag 57 from being discharged into the first crescent ring 51, thus providing a channel for outside air to enter the corrugated airbag 57.

[0123] When the first cylinder 10 retracts, the insert rod 13, driven by the first cylinder 10, moves the connecting rod 55 upward through the connecting ring 53 and the support rod 54. This allows the connecting rod 55 to pull the base plate 56 upward under external force, enabling the base plate 56 to move upward along the inner side of the first crescent ring 51. Simultaneously, the capsule 58 uses its elasticity and the weight of the rust-preventive oil stored inside to provide resistance to the arc plate 63. During the upward movement, the base plate 56, under the resistance of the arc plate 63, compresses the corrugated airbag 57, causing it to fold and retract. Simultaneously, the corrugated airbag 57 applies pressure to the air inside during this folding and retraction process, causing the corrugated airbag to... The air inside the airbag 57 can be discharged into the air tube 65 and then through the air tube 65 into the hollow sleeve 66. Then, guided by the hollow sleeve 66, the air enters the inclined air hole 67 and, under pressure, is forced to pass through the inclined air hole 67 and be sprayed obliquely onto the outer surface of the steel ball inside the hollow cylinder. The sprayed gas then separates the packaging paper scraps adhering to the outer surface of the steel ball from the steel ball. Under the action of the gas blowing force, the gas enters the passage 68 and, with the help of gravity and inertia, passes through the passage 68 and is discharged to the outside. This prevents the steel ball from being stuck or misplaced due to the packaging paper scraps adhering to its outer surface, thus avoiding insufficient steel ball filling caused by packaging paper scraps.

[0124] In a preferred embodiment of the present invention, the anti-scratching part includes an injection nozzle and a support reservoir. The injection nozzle is disposed through the first crescent ring 51, and the support reservoir is disposed within the first crescent ring 51 and communicates with the injection nozzle. The injection nozzle includes:

[0125] The extrusion head 59 has multiple cone-shaped structures. One end passes through the capsule 58 and the first crescent ring 51 near the lower tube 12, and the other end passes through the lower tube 12 and is flush with the inner wall of the lower tube 12.

[0126] Two one-way valves 60 are provided, one of which is disposed above the first crescent ring 51 and communicates with the capsule 58, and the other is disposed through the base plate 56 and communicates with the corrugated airbag 57.

[0127] Connecting pipe 61 is connected to the input end of check valve 60;

[0128] Specifically, the extruder 59 provides a channel for the rust-preventive oil in the capsule 58 to be discharged into the lower tube 12. The one-way valve 60 above the first crescent ring 51 provides support for the connecting pipe 61, which provides a flow channel for the rust-preventive oil. The one-way valve 60 is a valve type, which provides a channel for the rust-preventive oil in the connecting pipe 61 to enter the capsule 58, and prevents the rust-preventive oil in the capsule 58 from entering the connecting pipe 61.

[0129] Support components include:

[0130] The limiting plate 69 is fixed to the inner top wall of the first crescent ring 51 and is located on the side of the trachea 65 near the transparent tube.

[0131] Capsule 58 is fixedly connected to the protective plate and the limiting plate 69;

[0132] The lower end of capsule 58 bends and extends toward the arc plate 63;

[0133] The cotton ring 64 is fixed on the outside of the insert rod 13, close to the lower end of the insert rod 13, and in contact with the extrusion head 59.

[0134] Specifically, the limiting plate 69 can provide a blocking and limiting function for the arc plate 63 under the support of the first crescent ring 51, and can also cooperate with the first crescent ring 51 to provide support for the capsule 58. The capsule 58 is elastic and can be deformed under the action of external force. When the external force disappears, it will rebound. It can use the rebound force to generate suction to open the one-way valve 60 so that the anti-rust oil in the connecting pipe 61 can enter the capsule 58 for storage.

[0135] In practical application, the operator needs to connect the connecting pipe 61 to the grease delivery line, filling the connecting pipe 61 with grease. Before using the filling device, pressure is applied to the connecting pipe to inject the grease through the connecting pipe 61 into the capsule 58 for storage. When the insert rod 13 moves upward, it drives the base plate 56 upward via the connecting rod 55. The base plate 56 will compress the corrugated air bladder 57. At the same time, the corrugated air bladder 57 (during and after being compressed and folded) will use external force to compress the lower end of the capsule 58 upward through the arc plate 63 (with different forces). The one-way valve 60 on the first crescent ring 51 can prevent the grease in the capsule 58 from entering the connecting pipe 61, allowing the capsule 58 to squeeze the grease stored inside into the extruder 59 during the compression process, and then discharge it through the extruder 59 to the inside of the lower ball tube 12. Meanwhile, the cotton ring 64 will absorb and store the rust-preventive oil using its own adsorption properties, while some of the rust-preventive oil will flow downwards. The oil flows along the inner wall of the lower tube 12 and adheres to it. When the insertion rod 13 moves upward, it will drive the cotton ring 64 to move upward as well, so that the cotton ring 64 will coat the inner wall of the lower tube 12 with the absorbed rust-preventive oil during the movement. After the insertion rod 13 releases its obstruction of the bearing steel balls in the pipe 15, the arc plate 63 will move upward to the position where it contacts the lower end of the limiting plate 69. The limiting plate 69 can provide obstruction and limitation for the arc plate 63, while the bearing steel... The ball will pass through the hollow sleeve 66 and the tube 15 into the lower ball tube 12, and roll down along the lower ball tube 12 under the action of gravity. During the downward movement, it will come into contact with the anti-rust oil discharged into the lower ball tube 12, and carry the anti-rust oil together to fill between the inner ring 21 and the outer ring 20, thereby facilitating the lubrication of the bearing steel ball and raceway. The anti-rust oil can also increase the slippage of the lower ball tube 12, providing protection for the lower ball tube 12 and preventing the inner wall of the lower ball tube 12 from being scratched and jammed.

[0136] When the base plate 56 and the insert rod 13 are reset, the squeezing force on the capsule 58 will disappear. Then the capsule 58 will rebound and reset using the rebound force, thereby generating suction. This allows the grease in the connecting tube 61 to pass through the one-way valve 60 and be replenished into the capsule 58. At the same time, the corrugated airbag 57 will expand and extend under the action of tension and rebound force, and then reset, drawing outside air into the corrugated airbag 57 through the one-way valve 60 and the air tube 65.

[0137] In a preferred embodiment of the present invention, an L-shaped foot 22 is fixed on the support plate 1, and the L-shaped foot 22 is located between two L-plates 4. A frame plate 27 is fixed on the L-shaped foot 22. A connecting plate 28 and a fourth slide rail 29 are fixed on the frame plate 27, and the connecting plate 28 is located behind the fourth slide rail 29. An electric rod 32 is slidably connected to the fourth slide rail 29. A second cylinder 33 is fixed to the outside of the fixed end of the electric rod 32, and the telescopic end of the second cylinder 33 is fixed to the connecting plate 28. A top plate 34 is fixed to the telescopic end of the electric rod 32. Two brackets 35 are fixed on the top plate 34. A servo motor 36 is respectively installed through the two brackets 35. A pulley 37 is connected to the drive end of the servo motor 36. A belt 38 is sleeved on the outside of the pulley 37. One of the servo motors 36 is located above the second crescent ring 39, and the second crescent ring 39 is fixedly connected to the shaft of the pulley 37 connected to the drive end of one of the servo motors 36.

[0138] In practical application, the fourth slider 30 is slidably connected to the fourth slider 30 and connected to the lower end of the electric rod 32. The L-shaped foot 22 provides stable support for the frame plate 27 under the support of the support plate 1. The frame plate 27 provides stable support for the fourth slide rail 29, which in turn provides guiding support for the fourth slider 30. The frame plate 27 also provides stable support for the connecting plate 28. The electric rod 32 provides stable support for the second cylinder 33. When the second cylinder 33 extends, it pushes the electric rod 32 and the fourth slider 30 to move forward along the fourth slide rail 29; conversely, when it retracts, the same action occurs. The electric rod 32 provides support for the bracket 35 via the top plate 34, allowing the bracket 35 to stably support the servo motor 36. The servo motor 36 drives the pulley 37 to rotate upon startup. The pulley 37 then transmits rotational power via the belt 38, allowing the two servo motors 36 and pulleys 37 to switch rotation directions. One of the pulleys 37 drives the second crescent ring 39 to rotate as well. After the first ball filling operation is completed, the lower ball tube 12 needs to be moved out from between the inner ring 21 and the outer ring 20 and reset. Then, the second cylinder 33 is extended, pushing the electric rod 32 forward, which in turn moves the second crescent ring 39 to align with the gap between the inner ring 21 and the outer ring 20. The electric rod 32 is then retracted, causing the bracket 35, servo motor 36, pulley 37, and second crescent ring 39 to descend via the top plate 34, inserting the second crescent ring 39 between the inner ring 21 and the outer ring 20 and keeping it above the first ball filling, thus facilitating the second ball filling operation. The steel balls, after being loaded a second time, provide support and limit. Then, the position of the lower ball tube 12 is adjusted to perform a second ball loading operation, allowing the steel balls to be discharged between the inner ring 21 and the outer ring 20, and supported by the second crescent ring 39. After the second ball loading is completed, the lower ball tube 12 can be controlled to reset again. Then, the servo motor 36, which is away from the second crescent ring 39, is controlled to rotate counterclockwise. Through the pulley 37 and the belt 38, the second crescent ring 39 is driven to rotate 180 degrees counterclockwise, thus separating the second crescent ring 39 from the loaded steel balls between the inner ring 21 and the outer ring 20. Then, the electric rod 32 is controlled to extend, pulling the second crescent ring 39 out from between the inner ring 21 and the outer ring 20. Then, the servo motor 36, which is close to the second crescent ring 39, is controlled to rotate 180 degrees clockwise, allowing the second crescent ring 39 to rotate and reset for the next use, thereby realizing the ball loading operation of the double row bearing.

[0139] As a preferred embodiment of the present invention, a method of using a double-row bearing ball filling device includes:

[0140] Install the support frame 43 onto the workbench using the fixing components, ensuring that the work station plate 17 is located between the two conveyor rails 40 and aligned with the conveyor rails 40.

[0141] The outer ring 20 and inner ring 21 of the bearing are moved along the conveyor rail 40 to the work station plate 17, so that they abut against the first stop block 18 and the stop plate 19 to complete the positioning.

[0142] The electric actuator 25 is extended, pushing the T block 31 into the groove 62 of the multi-shaped plate, which in turn drives the L plate 4 to move forward along the first slide rail 2, so that the gap between the lower ball tube 12 and the inner ring 21 and the outer ring 20 is aligned.

[0143] The control lifting rod 7 moves down, pushing the first support plate 8 to drive the lower ball tube 12 and the first crescent ring 51 to insert between the inner ring 21 and the outer ring 20;

[0144] Steel balls are injected into the delivery pipe 16, and the steel balls are temporarily stored outside the lower ball pipe 12 through the pipe 15 and the hollow sleeve 66.

[0145] The first cylinder 10 is controlled to retract, which drives the insert rod 13 to move upward, releasing the blockage on the pipe 15. The steel ball falls through the lower ball tube 12 into the channel between the inner ring 21 and the outer ring 20 to complete the first row of filling.

[0146] When the insertion rod 13 moves upward, it pulls the base plate 56 to compress the corrugated airbag 57 through the linkage of the connecting ring 53, the support rod 54 and the connecting rod 55.

[0147] After the corrugated airbag 57 is compressed, the internal gas enters the hollow sleeve 66 through the air tube 65, and is sprayed obliquely onto the surface of the steel ball through the inclined air hole 67, blowing away the sticky packaging paper scraps and discharging them through the passage 68.

[0148] After the single-row filling is completed, the first cylinder 10 is extended and the insert rod 13 moves down to block the pipe 15;

[0149] Next, rotate and adjust the angle of the second crescent ring 39 and move it down to insert it between the inner ring 21 and the outer ring 20. Then, control the insertion rod 13 to move up again, so that the steel ball falls into the channel between the inner ring 21 and the outer ring 20 through the lower ball tube 12 to complete the secondary ball filling.

[0150] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A double-row bearing ball filling device, comprising a support plate and two L-plates slidably disposed on the support plate, wherein a first support plate is movably disposed on the front of the L-plate, an insertion rod is movably disposed on the front of the first support plate, a conveying pipe is fixed on the front of the first support plate, one end of the conveying pipe is connected to a drain pipe, a lower ball tube is fixed to the outer side of the end of the drain pipe away from the conveying pipe, and the lower ball tube is located outside the insertion rod to cooperate with the insertion tube to block the drain pipe, a work plate is fixed on the support plate and the work plate is located in front of the first support plate, a second crescent ring is rotatably and movably disposed above the work plate, and conveying rails are disposed on both sides of the work plate to convey bearings, characterized in that... Also includes: The tilting part is located below the support plate and is rotatably connected to the support plate. It includes a support connector rotatably connected to the support plate and a tilting member rotatably connected to the support connector via a connecting component. The tilting member is connected to the bottom of the support plate to adjust the tilt of the support plate and the work station plate. The anti-deficiency part is symmetrically arranged on the outside of the lower tube and connected to the insertion rod. It includes a connecting rod arranged on the outside of the lower tube and fixed to the insertion rod, and a corrugated airbag connected to the lower end of the connecting rod. It also includes a hollow sleeve that is fixed to the inside of the tube and a plurality of oblique air holes that are evenly opened through the inside of the hollow sleeve. The hollow sleeve is connected to the corrugated airbag to prevent packaging paper scraps from getting stuck in the steel balls and causing a shortage of steel balls. The anti-scratch section, located inside the first crescent ring and in contact with the anti-scratch section, includes a capsule fixed to the inner top wall of the first crescent ring by a limiting plate and located above the corrugated air bladder to store anti-rust oil, multiple extrusion heads that penetrate the corrugated air bladder and the lower tube, and a cotton ring fixed to the lower end of the insertion rod to prevent scratching the lower tube and ensure smooth ball dropping.

2. The ball-filling device for double-row bearings according to claim 1, characterized in that, The support member includes: Two rotating plates are symmetrically fixed below the support plate. The T-plate has two plates, which are respectively set below the two rotating plates, and the upper end of the plate is U-shaped and rotatably connected to the rotating plate; The support frame is fixed to the lower end of the T-plate and has an opening in the middle.

3. The double-row bearing ball filling device according to claim 2, characterized in that, The tilting component includes: A support frame is fixed between the two T-plates; The electric telescopic pole has its fixed end installed inside the support frame. The fifth slide rail is fixed below the support plate; The pressure plate is slidably connected to the outside of the fifth slide rail and extends to the bottom of the electric telescopic rod; The connecting part is located below the support plate and has a movable through-opening.

4. The double-row bearing ball filling device according to claim 3, characterized in that, The connecting parts include: The base frame has two parts, which are symmetrically fixed below the support plate and located on both sides of the pressure plate, and are movably connected through the opening; The second stop is fixed to the outside of the base frame and located below the support frame; A telescopic plate is set between the two base frames, with its upper end rotatably connected to the support plate and its lower end movable through an opening.

5. The double-row bearing ball filling device according to claim 4, characterized in that, The anti-deficiency part includes a pressure blowing component disposed on the pipe and the first crescent ring, and a connecting component connected to the pressure blowing component and the insertion rod, the connecting component including: The connecting ring is fixed to the outside of the insertion rod and located above the lower tube; The support rod is fixed to the outside of the connecting ring and is fixedly connected to the connecting rod; The base plate is fixed to the lower end of the corrugated airbag and is fixedly connected to the lower end of the connecting rod.

6. The ball-filling device for double-row bearings according to claim 5, characterized in that, The blow molding component includes: The upper end of the corrugated airbag is fixed with an arc plate, and the arc plate is in contact with the lower end of the capsule. The trachea passes through the first crescent ring and its lower end passes through the arc plate and connects to the corrugated airbag. The opening is made through the lower end of the first crescent ring; The blower components are installed through the pipe and are coaxial with the pipe.

7. The double-row bearing ball filling device according to claim 6, characterized in that, The blower component includes: A hollow cylinder is installed through the pipe, and its inner wall is flush with the inner wall of the pipe. The oblique air hole is connected to the inside of the hollow cylinder; The upper end of the trachea is connected to the lower part of the hollow cylinder and communicates with the oblique air hole; The passageway has multiple sections, is integrally formed with the hollow cylinder, and is adjacent to the oblique air holes.

8. The double-row bearing ball filling device according to claim 7, characterized in that, The anti-scratching part includes an injection outlet and a support reservoir. The injection outlet is disposed through the first crescent ring, and the support reservoir is disposed within the first crescent ring and communicates with the injection outlet. The injection outlet includes: The extrusion head has multiple cone-shaped structures. One end passes through the capsule and the first crescent ring on the side near the lower tube, and the other end passes through the lower tube and is flush with the inner wall of the lower tube. Two one-way valves are provided, one of which is disposed above the first crescent ring and communicates with the capsule, and the other is disposed through the bottom plate and communicates with the corrugated airbag. Connecting pipe, which is connected to the input end of the check valve; The support and storage component includes: The limiting plate is fixed to the inner top wall of the first crescent ring and is located on the side of the trachea near the transparent tube. The capsule is fixedly connected to the protective plate and the limiting plate; The lower end of the capsule bends and extends toward the arc plate; The cotton ring is fixed to the outside of the insert rod, near the lower end of the insert rod, and in contact with the extrusion head.

9. The ball-filling device for a double-row bearing according to claim 8, characterized in that, An L-shaped foot is fixed to the support plate, and the L-shaped foot is located between two L-plates. A frame plate is fixed to the L-shaped foot, and a connecting plate and a fourth slide rail are fixed to the frame plate. The connecting plate is located behind the fourth slide rail. An electric rod is slidably connected to the fourth slide rail. A second cylinder is fixed to the outside of the fixed end of the electric rod, and the telescopic end of the second cylinder is fixed to the connecting plate. A top plate is fixed to the telescopic end of the electric rod, and two brackets are fixed to the top plate. A servo motor is respectively installed through the two brackets. A pulley is connected to the drive end of the servo motor, and a belt is sleeved on the outside of the pulley. One of the servo motors is located above the second crescent ring, and the second crescent ring is fixedly connected to the shaft of the pulley connected to the drive end of one of the servo motors.

10. A method of using a double-row bearing ball-filling device, applied in the double-row bearing ball-filling device as described in any one of claims 1-7, characterized in that, The method of using the double-row bearing ball filling device includes: Install the support frame onto the workbench using the fixing components, ensuring that the workstation tray is positioned between the two conveyor rails and aligned with them. The outer and inner rings of the bearing are moved along the conveyor rail to the workstation plate, so that they abut against the first stop and the abutment plate to complete the positioning. The electric actuator extends, pushing the T-block into the groove of the shaped plate, which in turn moves the L-plate forward along the first slide rail, aligning the gap between the lower ball tube and the inner and outer rings. The control lifting rod moves down, pushing the first support plate to drive the lower ball tube and the first crescent ring to insert between the inner and outer rings; Steel balls are injected into the delivery pipe, and the steel balls are temporarily stored outside the lower ball pipe through the pipe and hollow sleeve; The first cylinder is controlled to contract, which drives the insert rod to move upward, releasing the blockage on the pipe. The steel ball falls through the lower ball tube into the groove between the inner and outer rings to complete the first row of filling. When the insertion rod moves upward, it pulls the base plate to compress the corrugated airbag through the linkage of the connecting ring, support rod and connecting rod; After the corrugated airbag is compressed, the internal gas enters the hollow sleeve through the air tube, and is sprayed obliquely onto the surface of the steel ball through the slanted air hole, blowing away the sticky packaging paper scraps and discharging them through the passage. After the single-row filling is completed, the first cylinder is extended and the insert rod moves down to block the pipe; Next, rotate and adjust the angle of the second crescent ring and move it down, inserting it between the inner and outer rings. Then, control the insertion rod to move up again, so that the steel ball falls through the lower ball tube into the channel between the inner and outer rings to complete the secondary ball filling.

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