Equipment and method for mounting balls on inner ring of tapered roller bearing

Abstract

The invention relates to assembly equipment of bearings, and discloses equipment and a method for installing balls in inner rings of tapered roller bearings, the equipment comprises a first rotating table, a clamp device and a ball filling device, and the clamp device comprises a clamp; the device further comprises a first manipulator, a second rotating table and a filling table; the first manipulator conveys the retainer to the second rotary table for rotary positioning; the filling table comprises a driver, a third rotating table and a ball assembling guide part, the driver is connected with the third rotating table and drives the third rotating table to rotate, the driver is connected with the ball assembling guide part and drives the ball assembling guide part to ascend, descend and rotate, guide grooves are formed in the periphery of the ball assembling guide part, and the ball filling device fills balls into the retainer through the guide grooves. And the holder is rotationally positioned through the second rotating table, so that the holder can be in the best posture when the balls are filled, and the balls can accurately fall into the ball containing positions of the holder. The ball assembling guide piece improves the accuracy of ball filling, and the performance and stability of the bearing are guaranteed.

Description

Technical Field

[0001] The invention relates to a bearing assembly device, in particular to a device and a method for assembling balls on the inner ring of a tapered roller bearing. Background Art

[0002] In the production process of installing balls on the inner rings of tapered roller bearings, efficient and precise assembly technology is crucial. Currently, various technical solutions have been developed in related fields to improve assembly efficiency and quality. For example, the invention patent application with application number CN114803327A discloses an automated assembly device and method for tapered roller bearings. The device includes a cage loading device, a roller loading device, a bearing inner ring assembly device, a bearing outer ring assembly device, and a turntable worktable. Through the coordinated operation of these devices, the cage loading, tapered roller assembly, inner ring assembly, and outer ring assembly processes can be automatically completed, improving production efficiency to a certain extent. However, this technology still has some shortcomings in the process of installing balls on the inner rings of tapered roller bearings.

[0003] During the ball assembly process, existing assembly equipment of this type has a relatively simple method for ball filling, often making it difficult to quickly adapt to cages of varying sizes. For example, the roller feeding device in the aforementioned patent, when assembling tapered rollers into cages, is based on a specific structural design and operating method. This makes it impossible to flexibly adjust the ball introduction angle and speed in ball assembly scenarios, resulting in reduced ball filling accuracy and efficiency when working with cages of varying sizes and structures.

[0004] The existing technology also has room for improvement in the positioning and transfer of retainers. For example, in patent CN114803327A, although the retainer has a posture adjustment module during the loading process, the positioning accuracy and stability of the retainer when transferring from one workstation to another during the entire assembly process still need to be improved. In the new method for loading balls into the inner ring of a tapered roller bearing, the retainer needs to be precisely positioned at the filling position to ensure that the balls are accurately poured into each retainer's receiving position. However, the existing technology struggles to meet the higher precision requirements in this regard.

[0005] In addition, existing assembly equipment has problems with overall coordination. The coordination between different devices may not be tight enough, resulting in waiting times during the production process and reducing overall production efficiency. When installing balls on the inner ring of a tapered roller bearing, from loading and positioning the cage to filling the balls, each link needs to be closely connected. Existing technology makes it difficult to achieve seamless connection between each link, affecting the production rhythm. The new tapered roller bearing inner ring ball installation equipment is based on improvements and innovations to the shortcomings of existing technologies, aiming to provide a more efficient, precise and adaptable ball assembly solution. Summary of the Invention

[0006] Aiming at the shortcomings of the prior art, the present invention provides a device and method for installing balls on the inner ring of a tapered roller bearing.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] A device for loading balls into the inner ring of a tapered roller bearing comprises a first rotating platform for storing a retainer, a clamping device for clamping the retainer, and a ball pouring device for pouring balls into the retainer. The clamping device comprises at least two clamps for transferring the retainer to the next station.

[0009] It also includes a first manipulator for grabbing the holder on the first rotating table, a second rotating table for rotating and positioning the holder, and a filling table for filling the balls;

[0010] The first manipulator transports the holder to the second rotating table for rotation positioning;

[0011] The filling station includes a driver, a third rotating table and a ball assembly guide for guiding the balls into the retaining frame. The driver is connected to the third rotating table and drives it to rotate. The driver is connected to the ball assembly guide and drives it to rise and fall and rotate. There are a number of guide grooves on all sides of the ball assembly guide. The ball filling device fills the balls into the retaining frame through the guide grooves.

[0012] One fixture clamps the retainer on the second turntable and transports the positioned retainer to the second turntable. The other fixture radially limits the retainer on the filling table and simultaneously moves the filled retainer to the next station. The second turntable includes a second turntable, a turntable motor, and a distance sensor. The distance sensor is located at the rear end of the second turntable and detects the position of the retainer on the second turntable. The turntable motor is connected to the second turntable and drives its rotation.

[0013] Preferably, the third rotating table includes an upper table, a lower table and a connecting rod, the upper table is arranged above the lower table and fixed to the lower table by the connecting rod; the upper table is provided with an adapter hole for placing the retaining frame, and the inner wall of the adapter hole is provided with a number of notched grooves for adapting to the ball bearings; the lower table is integrally formed with a support table that protrudes upward and is located directly below the adapter hole, and the support table is provided with an assembly hole for the output spindle of the driver to pass through, and the inner wall of the assembly hole is provided with a card groove, and the lower table is installed on the output spindle of the driver through a bearing; a limiting protrusion is provided on the spindle of the driver, and the limiting protrusion of the driver is adapted to the card groove of the support table.

[0014] Preferably, the first rotating platform includes a support frame, a turntable and a first motor. The turntable is mounted on the support frame and rotates thereon. The first motor is mounted on the support frame and connected to the turntable. The first motor is used to drive the turntable to rotate. The upper end surface of the turntable is evenly distributed with a number of stacking rods for stacking retaining frames. The stacking rods include a large rod end and a small rod end. The outer diameter of the large rod end is larger than the outer diameter of the small rod end. The small rod end is mounted above the large rod end. A support washer for supporting the lowest retaining frame is mounted on the small rod end. The support washer is placed on the large rod end. The outer diameter of the support washer is larger than the outer diameter of the large rod end.

[0015] Preferably, it also includes a lifting device, which includes a lifting screw, a second motor, a lifting slider and a second manipulator for lifting the support washer. The lifting slider is spirally lifted and lowered on the lifting screw and is threadedly connected to it. The output shaft of the second motor is connected to the lifting screw through a coupling and drives it to rotate. The second manipulator is installed on the lifting slider. The second manipulator includes a lifting claw and a third motor. The third motor is connected to the lifting claw and drives it to open and close left and right. When the lifting claw is closed, it extends directly under the support washer.

[0016] Preferably, a pressing frame device is also included, which includes a fourth motor and a pressing rod for pressing on the second retaining frame at the upper end, one end of the pressing rod is fastened to the output shaft of the fourth motor, and the fourth motor is used to drive the pressing rod to rotate and limit it to the upper end of the second retaining frame.

[0017] Preferably, the first manipulator includes a first screw rod, a fifth motor, a first slider, a first cylinder, a first cylinder frame, a second cylinder and a first claw disk. The fifth motor is connected to the first screw rod and drives it to rotate. The first slider is threadedly installed on the first screw rod and moves along it. The cylinder body of the first cylinder is fastened to the first slider. The push rod of the first cylinder is connected to the first cylinder frame. The second cylinder is installed on the first cylinder frame. The push rod of the second cylinder is connected to the first claw disk and drives the claws on it to open and close.

[0018] Preferably, the ball filling device includes a sixth motor, a second screw rod, a third cylinder, a bead filling rack, a second slider, a support arm and a bead filling supply pipe for filling the retaining rack with balls. The sixth motor is connected to the second screw rod and drives it to rotate. The bottom thread of the bead filling rack is installed on the second screw rod and moves along it. The third cylinder is installed on the bead filling rack. The bead filling rack is provided with a guide rail. The second slider is installed on the guide rail and rises and falls on it. The push rod of the third cylinder is connected to the second slider. One end of the support arm is fastened to the second slider. The other end of the support arm extends to directly above the filling table. The bead filling supply pipe is installed on the support arm.

[0019] Preferably, it also includes a third manipulator for grasping the inner ring and an inner ring storage device for storing the inner ring. The third manipulator includes a seventh motor, a third screw rod, a third slider, a fourth cylinder, a second cylinder frame, a fifth cylinder and a second claw disk. The seventh motor is connected to the third screw rod and drives it to rotate. The third slider is threaded on the third screw rod and moves along it. The cylinder body of the fourth cylinder is connected to the third slider. The push rod of the fourth cylinder is tightly connected to the second cylinder frame. The fifth cylinder is installed on the second cylinder frame. The push rod of the fifth cylinder is connected to the second claw disk and drives the claws thereon to open and close; one end of the third screw rod is located directly above the filling table, and the other end thereof extends to the inner ring storage device. The inner ring storage device includes a frame, a conveyor belt, and an eighth motor. The conveyor belt and the eighth motor are both installed on the frame. The eighth motor is connected to the conveyor belt via a drive shaft and drives it to rotate.

[0020] Preferably, the clamp device also includes a ninth motor, a tenth motor, a fourth screw rod, a fifth screw rod, a fourth slider, a fifth slider, a clamp frame and a sixth cylinder. The ninth motor drives the fourth screw rod to rotate and is installed on the clamp frame. The tenth motor drives the fifth screw rod to rotate and is installed on the clamp frame. The fourth slider is threaded on the fourth screw rod and moves on it. The fifth slider is threaded on the fifth screw rod and moves on it. The sixth cylinder is installed at both ends of the clamp frame. The sixth cylinder drives the clamp frame to move forward and backward toward the filling table. The clamp includes short clamp rods and long clamp rods. All short clamp rods are installed on the fourth slider, and all long clamp rods are installed on the fifth slider.

[0021] A method for installing balls in the inner ring of a tapered roller bearing comprises the following steps:

[0022] S1: The control system controls the first motor to work, and the first motor drives the turntable to rotate, rotating one of the stacking rods with the retaining frame to the bottom of the first claw disk;

[0023] S2: The control system controls the third motor to drive the lifting claw to rotate and close, and the lifting claw rotates to just below the support washer; the second motor drives the lifting screw to work and drives the second manipulator to move upward; when the top holding rack rises to the top of the stacking rod, the second motor stops working; the fourth motor drives the pressure rod to rotate and make it block the second holding rack;

[0024] S3: The push rod of the first cylinder pushes the first claw disc onto the first layer of the stacking rod, and the second cylinder works to push the claws of the first claw disc to clamp the first layer of the holder; the first cylinder contracts to grab the first layer of the holder, and the fifth motor drives the first screw to work, transporting the grabbed holder to the top of the second rotating table; and the holder is placed on the second rotating table by the first cylinder and the claws of the first claw disc; after the holder is placed on the second rotating table, the control system controls the first claw disc to return to its initial position;

[0025] S4: The distance sensor is facing the holder. When the upper wall of the holder faces the distance sensor, the distance sensor transmits an electrical signal to the control system, which controls the turntable motor to rotate. When the hole on the holder faces the distance sensor, the control system controls the turntable motor to stop working.

[0026] S5: The fourth and fifth screw rods work, the retainer is clamped by the short clamping rod and the long clamping rod, and the retainer is placed on the third rotating table;

[0027] S6: Under the action of the third cylinder and the second screw, the support arm moves to the top of the cage; the driver pushes the ball assembly guide until the ball assembly guide is flush with the top of the cage, and then the driver drives the third rotating platform and the ball assembly guide to rotate, and the ball supply pipe supplies balls to the ball assembly guide; when the cage is full of balls, the control system drives the driver to stop working and controls the support arm to return to its original position;

[0028] S7: The sixth motor drives the second screw, and the bead filling rack moves along the second screw. Under the combined action of the fourth cylinder and the third screw, the second claw plate moves above the conveyor belt and clamps the inner ring, which is then transported to the top of the cage where the balls have been installed. Under the action of the fourth cylinder, the inner ring is pressed into the cage. At the same time, the driver retracts the ball assembly guide.

[0029] S8: The fourth and fifth screw rods work, and the assembled inner ring is clamped by the short clamping rod and the long clamping rod, and the assembled inner ring is transported to the next process;

[0030] S9: The above steps complete one assembly process, and the above steps are repeated to complete the next inner ring assembly ball process.

[0031] The present invention has significant technical effects due to the adoption of the above technical solutions:

[0032] (1) The second rotating table rotates the cage to position it in the optimal position when the balls are filled, ensuring that the balls fall accurately into the ball receiving position of the cage. The guide grooves on the ball assembly guide provide a precise guide path for the balls, further improving the accuracy of ball filling, thereby improving the assembly quality of the inner ring of the tapered roller bearing and ensuring the performance and stability of the bearing.

[0033] (2) Multiple fixtures work together to quickly transfer the cage to the next station, reducing waiting time. The driver of the filling station can simultaneously drive the rotation of the third rotating table and the lifting and rotation of the ball assembly guide, realizing multiple actions in parallel and accelerating the ball filling speed. The first manipulator quickly grabs and transfers the cage. The various parts of the entire equipment work closely together, improving overall production efficiency and meeting the needs of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the front direction.

[0035] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in a side direction.

[0036] Figure 3 It is a structural schematic diagram of the first rotating table.

[0037] Figure 4 It is a structural diagram of the first manipulator, the lifting device and the pressing device.

[0038] Figure 5 It is a structural diagram of the ball injection device.

[0039] Figure 6 It is a structural diagram of the third manipulator.

[0040] Figure 7 It is a structural diagram of the clamping device.

[0041] Figure 8 It is a structural diagram of the filling station.

[0042] Figure 9 It is a schematic diagram of the three-dimensional structure of the third rotating platform.

[0043] Figure 10 It is a side structural diagram of the third turntable.

[0044] The parts indicated by the numbers in the above drawings are as follows:

[0045] 10 - first rotating platform, 101 - support frame, 102 - turntable, 103 - stacking rod, 104 - support washer, 105 - first motor, 1031 - large rod end, 1032 - small rod end

[0046] 11 - Clamping device, 111 - Clamping device, 112 - Ninth motor, 113 - Tenth motor, 114 - Fourth screw rod, 115 - Fifth screw rod, 116 - Fourth slider, 117 - Fifth slider, 118 - Clamping frame, 119 - Sixth cylinder, 1111 - Short clamping rod, 1112 - Long clamping rod

[0047] 12 - ball filling device, 121 - sixth motor, 122 - second screw rod, 123 - third cylinder, 124 - ball filling rack, 125 - second slider, 126 - support arm, 127 - ball filling supply pipe, 128 - guide rail

[0048] 13 - first manipulator, 131 - first screw rod, 132 - fifth motor, 133 - first slider, 134 - first cylinder, 135 - first cylinder frame, 136 - second cylinder, 137 - first claw plate

[0049] 14—Second rotating platform, 141—Second rotating platform, 142—Distance sensor

[0050] 15 - filling table, 151 - driver, 152 - third rotating table, 153 - ball assembly guide, 1531 - guide groove, 1521 - upper table, 1522 - lower table, 1523 - connecting rod, 1524 - adapter hole, 1525

[0051] - notch, 1526 - support platform, 1527 - assembly hole, 1528 - slot

[0052] 16 - lifting device, 161 - lifting screw, 162 - second motor, 163 - lifting slider, 164 - second manipulator, 1641 - lifting claw, 1642 - third motor

[0053] 17-pressing device, 171-fourth motor, 172-pressing rod

[0054] 18 - third manipulator, 181 - third screw rod, 182 - third slider, 183 - fourth cylinder, 184 - second cylinder frame, 185 - fifth cylinder, 186 - second claw plate

[0055] 19—Inner ring storage device, 191—Frame, 192—Conveyor belt, 193—Eighth motor. DETAILED DESCRIPTION

[0056] The following is combined with Figure 1-10 The present invention is further described in detail with reference to examples.

[0057] Example 1

[0058] A device for loading balls into the inner ring of a tapered roller bearing includes a first rotating table 10 for storing a retaining frame, a clamping device 11 for clamping the retaining frame, and a ball pouring device 12 for pouring balls into the retaining frame. The clamping device 11 includes at least two clamps 111 for transferring the retaining frame to the next workstation. In this embodiment, the number of clamps 111 is five.

[0059] The device also includes a first manipulator 13 for grabbing the holder on the first rotating table 10, a second rotating table 14 for rotating and positioning the holder, and a filling table 15 for filling the balls;

[0060] The first manipulator 13 transports the holder to the second rotating platform 14 for rotational positioning;

[0061] The filling station 15 comprises a driver 151, a third rotating platform 152, and a ball assembly guide 153 for guiding the balls into the cage. Driver 151 is a ZR motor, which achieves both linear and rotational motion through an electric motor, a helical pair, and a rotor. The rotor's input end converts the motor's rotational motion into linear motion via a helical pair, while the output end converts the linear motion into rotational motion via a mechanical transmission. By controlling the motor's speed and direction, multi-dimensional motion of the linear rotary actuator can be achieved. Driver 151 is connected to the third rotating platform 152 to drive its rotation. Driver 151 is also connected to the ball assembly guide 153 to drive its linear elevation and rotation. The ball assembly guide 153 is surrounded by a number of guide slots 1531. The ball filling device 12 uses these slots to fill the balls into the cage. The second rotating platform 14 rotates the cage to position it precisely for the ball filling process. The evenly distributed guide grooves 1531 on the ball assembly guide 153 plan a precise travel path for the balls, allowing them to accurately and precisely fall into the preset ball receiving positions in the retainer. This precise fit greatly improves the accuracy of ball assembly, ensuring the assembly quality of the tapered roller bearing inner ring, thereby safeguarding the performance and stability of the bearing and reducing product quality issues caused by assembly errors. The filling station 15 uses a ZR motor as the driver 151. Its unique motion conversion mechanism simultaneously drives the rotation of the third rotating platform 152 and the linear elevation and rotation of the ball assembly guide 153, achieving multi-action synchronous operation. This makes the ball filling process smoother and more efficient, greatly improving overall production efficiency and meeting the rhythm requirements of large-scale production.

[0062] One of the clamps 111 is used to clamp the retainer on the second turntable 14. The clamp 111 transports the positioned retainer to the second turntable 14. The other clamp 111 radially limits the retainer on the filling table 15 and moves the filled retainer to the next station. The second turntable 14 includes a second turntable 141, a turntable motor, and a distance sensor 142. The distance sensor 142 is located at the rear end of the second turntable 141 and is used to detect the position of the retainer on the second turntable 141. The turntable motor is connected to the second turntable 141 and drives it to rotate. The second turntable 14 is equipped with a distance sensor 142, which can detect the position of the retainer on the second turntable 141 in real time. It cooperates with the turntable motor to drive the second turntable 141 to rotate, ensuring that the retainer can be accurately positioned at the preset position every time, thereby improving the accuracy of ball filling, reducing ball filling errors caused by retainer position deviation, and also improving the consistency and efficiency of the entire assembly process.

[0063] The third rotating platform 152 includes an upper platform 1521, a lower platform 1522 and a connecting rod 1523. The outer contours of the upper platform 1521 and the lower platform 1522 are both circular. The upper platform 1521 is arranged above the lower platform 1522 and is fixed thereto by the connecting rod 1523. There are three connecting rods 1523, and the three connecting rods 1532 are evenly distributed between the upper platform 1521 and the lower platform 1522. The upper platform 1521 is provided with an adapter hole 1524 for placing a retainer, and the inner wall of the adapter hole 1524 is provided with a number of notched grooves 1525 for adapting to the ball. When the ball is installed on the retainer, the ball part The lower platform 1522 has an integrally formed support platform 1526 that projects upward and is located directly below the adapting hole 1524. The support platform 1526 has a cylindrical outer contour and is used to support the retaining frame. The support platform 1526 is provided with an assembly hole 1527 for the output spindle of the driver 151 to pass through. The inner wall of the assembly hole 1527 is provided with a retaining groove 1528. The lower platform 1522 is mounted on the output spindle of the driver 151 via a bearing. The spindle of the driver 151 is provided with a limiting bump that mates with the retaining groove 1528 of the support platform 1526. The adapting hole 1524 of the upper platform 1521 provides a precise placement for the retaining frame, ensuring its stability during the ball filling process. The notched groove 1525 on the inner wall of the adapter hole 1524 is adapted to fit the ball. When the ball is installed on the retainer, a portion of the ball extends deep into the notched groove 1525. This not only helps the ball accurately fall into the retainer's ball-receiving position, but also further enhances the ball's positioning accuracy within the retainer, improving the quality of the tapered roller bearing inner ring ball assembly and ensuring the bearing's performance and reliability. The cylindrical support platform 1526 integrally formed on the lower platform 1522, located directly below the adapter hole 1524, stably supports the retainer and prevents the retainer from shifting due to uneven force during the filling process. At the same time, the assembly hole 1527 on the support platform 1526 facilitates the passage of the output spindle of the driver 151, allowing the driver 151 to smoothly drive the third rotating platform 152 to rotate, ensuring the continuity and efficiency of the ball filling process.

[0064] The first rotating platform 10 includes a support frame 101, a turntable 102 and a first motor 105. The turntable 102 is mounted on the support frame 101 and rotates thereon. The first motor 105 is mounted on the support frame 101 and connected to the turntable 102. The first motor 105 is used to drive the turntable 102 to rotate. A plurality of stacking rods 103 for stacking the holders are evenly distributed on the upper end surface of the turntable 102. In this embodiment, the number of stacking rods 103 is six. The stacking rods 103 include a large rod end 1031 and a small rod end 1032. Both the large rod end 1031 and the small rod end 1032 are cylindrical. In other embodiments, The large rod end 1031 and the small rod end 1032 can also be square. The outer diameter of the large rod end 1031 is larger than the outer diameter of the small rod end 1032. The small rod end 1032 is installed above the large rod end 1031. The small rod end 1032 is fitted with a support washer 104 for supporting the bottommost retainer. The support washer 104 is placed on the large rod end 1031. The outer diameter of the support washer 104 is larger than the outer diameter of the large rod end 1031. The retainer is fitted onto the stacking rod 103 and placed on the support washer 104. When the support washer 104 is lifted, all retainers on the same stacking rod 103 are lifted upward. The structural design of the large rod end 1031 and the small rod end 1032 of the stacking rod 103, in conjunction with the support washer 104, can stably support the retainer. The outer diameter of the support washer 104 is larger than the outer diameter of the large rod end 1031, which expands the support area for the retainer and makes the retainer placement more stable. When the support washer 104 is lifted, the retaining frame on the same stacking rod 103 rises synchronously, which is convenient for the first manipulator 13 to grab, ensures the stability of the retaining frame during transfer, and is conducive to improving the subsequent assembly accuracy.

[0065] The device also includes a lifting device 16, which includes a lifting screw 161, a second motor 162, a lifting slider 163 and a second manipulator 164 for lifting the support washer 104. The lifting slider 163 is spirally lifted and lowered on the lifting screw 161 and is threadedly connected to it. The output shaft of the second motor 162 is connected to the lifting screw 161 through a coupling and drives it to rotate. The second manipulator 164 is installed on the lifting slider 163. The second manipulator 164 includes a lifting claw 1641 and a third motor 1642. The third motor 1642 is connected to the lifting claw 1641 and drives it to open and close left and right. When the lifting claw 1641 is closed, it extends directly under the support washer 104. The lifting device 16 drives the lifting screw 161 to rotate through the second motor 162, driving the lifting slider 163 to spirally lift and lower, thereby achieving precise lifting and lowering control of the second manipulator 164. The second motor 162 is connected to the lifting screw 161 via a coupling, providing smooth and high-precision transmission. This allows for accurate control of the lifting height of the support washer 104, allowing the holder to quickly reach a position where it can be grasped by the first manipulator 13, reducing waiting time and improving production efficiency. The lifting claw 1641 of the second manipulator 164 opens and closes left and right under the drive of the third motor 1642. When closed, it can precisely extend directly under the support washer 104, ensuring stable lifting of the support washer 104. This design ensures the stability of the holder during the lifting process, preventing shaking or offsetting, providing an accurate positional basis for subsequent grasping by the first manipulator 13, and helping to improve the accuracy of the entire assembly process.

[0066] The equipment also includes a pressing device 17, which includes a fourth motor 171 and a pressing rod 172 for pressing on the second retaining frame at the upper end. One end of the pressing rod 172 is fastened to the output shaft of the fourth motor 171, and the fourth motor 171 is used to drive the pressing rod 172 to rotate and limit it to the upper end of the second-layer retaining frame. The pressing rod 172 pressing on the second-layer retaining frame can effectively prevent the first manipulator 13 from lifting the retaining frame below it when grabbing the first-layer retaining frame, ensuring that the first manipulator 13 only grabs the top-layer retaining frame at a time. The top-layer retaining frame is the first-layer retaining frame, and the second-layer retaining frame is below it.

[0067] The first manipulator 13 includes a first screw rod 131, a fifth motor 132, a first slider 133, a first cylinder 134, a first cylinder frame 135, a second cylinder 136, and a first claw plate 137. The first claw plate 137 is a three-claw type, that is, the first claw plate 137 is also provided with three evenly spaced claws. The fifth motor 132 is connected to the first screw rod 131 and drives its rotation. The first slider 133 is threadedly mounted on the first screw rod 131 and moves along it. The cylinder body of the first cylinder 134 is tightly connected to the first slider 133. The push rod of the first cylinder 134 is connected to the first cylinder frame 135. The second cylinder 136 is mounted on the first cylinder frame 135. The push rod of the second cylinder 136 is connected to the first claw plate 137 and drives the opening and closing of the claws thereon. The fifth motor 132 drives the first screw rod 131 to rotate, driving the first slider 133 to move precisely, and can accurately control the horizontal position of the first manipulator 13. The coordination of the first and second cylinders 134, 136 controlling the height and opening and closing of the first claw plate 137 allows the first manipulator 13 to accurately reach the position of the retainer and reliably grasp it, ensuring the precise positioning of the retainer each time it is grasped. This ensures the subsequent precise assembly of the ball bearings, thereby improving the accuracy of the ball assembly on the inner ring of the tapered roller bearing. Furthermore, the rapid movement of the first and second cylinders 134, 136, and the drive control of the first screw 131 by the fifth motor 132 enable the first manipulator 13 to quickly grasp and transfer the retainer, reducing the operation time of a single retainer and improving the production efficiency of the entire assembly process.

[0068] The ball filling device 12 includes a sixth motor 121, a second screw rod 122, a third cylinder 123, a bead filling rack 124, a second slider 125, a support arm 126 and a bead filling supply pipe 127 for filling the retaining rack with balls. The sixth motor 121 is connected to the second screw rod 122 and drives it to rotate. The bottom thread of the bead filling rack 124 is installed on the second screw rod 122 and moves along it. The third cylinder 123 is installed on the bead filling rack 124. The bead filling rack 124 is provided with a guide rail 128. The second slider 125 is installed on the guide rail 128 and rises and falls thereon. The push rod of the third cylinder 123 is connected to the second slider 125. One end of the support arm 126 is fastened to the second slider 125. The other end of the support arm 126 extends to directly above the filling table 15. The bead filling supply pipe 127 is installed on the support arm 126. The sixth motor 121 drives the second screw 122 to rotate, precisely controlling the horizontal position of the bead filling rack 124 and aligning the bead supply tube 127 with the retaining frame on the filling table 15. The third cylinder 123 controls the second slide 125 to rise and fall on the guide rail 128, thereby precisely adjusting the height of the bead supply tube 127 and ensuring that the balls are accurately filled into the ball receiving space of the retaining frame. This improves the precision of the ball assembly of the inner ring of the tapered roller bearing and ensures product quality.

[0069] The equipment also includes a third manipulator 18 for grabbing the inner ring and an inner ring storage device 19 for storing the inner ring. The third manipulator 18 includes a seventh motor, a third screw rod 181, a third slider 182, a fourth cylinder 183, a second cylinder frame 184, a fifth cylinder 185 and a second claw plate 186. The seventh motor is connected to the third screw rod 181 and drives it to rotate. The third slider 182 is threadedly installed on the third screw rod 181 and moves along it. The cylinder body of the fourth cylinder 183 is connected to the third slider 182, and the push rod of the fourth cylinder 183 is connected to the second cylinder frame 184. Cylinder frame 184 is securely connected, and fifth cylinder 185 is mounted on second cylinder frame 184. The push rod of fifth cylinder 185 is connected to second claw plate 186, driving the claws thereon to open and close. One end of third screw rod 181 is located directly above filling station 15, and its other end extends to inner ring storage device 19. Inner ring storage device 19 includes a frame 191, a conveyor belt 192, and an eighth motor 193. Both conveyor belt 192 and eighth motor 193 are mounted on frame 191. Eighth motor 193 is connected to conveyor belt 192 via a drive shaft, driving its rotation. The seventh motor of third manipulator 18 drives third screw rod 181, driving the rapid movement of third slider 182, enabling it to quickly grab inner rings from inner ring storage device 19 and transfer them to filling station 15. At the same time, the fourth cylinder 183 and the fifth cylinder 185 respectively control the height of the second claw plate 186 and the opening and closing of the claws, making the action of grabbing and placing the inner ring efficient and smooth, reducing the handling time of a single inner ring and improving overall production efficiency.

[0070] The clamp device 11 also includes a ninth motor 112, a tenth motor 113, a fourth screw rod 114, a fifth screw rod 115, a fourth slider 116, a fifth slider 117, a clamp frame 118 and a sixth cylinder 119. The ninth motor 112 drives the fourth screw rod 114 to rotate and is installed on the clamp frame 118. The tenth motor 113 drives the fifth screw rod 115 to rotate and is installed on the clamp frame 118. The fourth slider 116 is threadedly installed on the fourth screw rod 114 and moves thereon. The fifth slider 117 is threadedly installed on the fifth screw rod 115 and moves thereon. The sixth cylinder 119 is installed at both ends of the clamp frame 118. The sixth cylinder 119 drives the clamp frame 118 to move forward and backward toward the filling table 15. The clamp 111 includes a short clamp rod 1111 and a long clamp rod 1112. All short clamp rods 1111 are installed on the fourth slider 116, and all long clamp rods 1112 are installed on the fifth slider 117. The ninth motor 112 drives the fourth screw rod 114, while the tenth motor 113 drives the fifth screw rod 115, respectively, precisely controlling the positions of the fourth slider 116 and the fifth slider 117. This allows for precise adjustment of the positions of the short clamping rod 1111 and the long clamping rod 1112, enabling more accurate gripping and transfer of the retainer. Simultaneously, the sixth cylinder 119 drives the clamping frame 118 back and forth toward the filling station 15, further ensuring accurate placement of the retainer on the filling station 15 and improving assembly accuracy. Furthermore, this precise control reduces adjustment time during operation, improves the efficiency of retainer transfer, and ultimately enhances overall production efficiency.

[0071] Example 2

[0072] A method for installing balls in the inner ring of a tapered roller bearing comprises the following steps:

[0073] S1: The control system controls the first motor 105 to work, and the first motor 105 drives the turntable 102 to rotate, rotating one of the stacking rods 103 with the retaining frame to be directly below the first claw plate 137;

[0074] S2: The control system controls the third motor 1642 to drive the lifting claw 1641 to rotate and close, and the lifting claw 1641 rotates to be directly below the support washer 104; the second motor 162 drives the lifting screw 161 to work and drives the second manipulator 164 to move upward; when the uppermost holding rack rises to the top of the stacking rod 103, the second motor 162 stops working; the fourth motor 171 drives the pressing rod 172 to rotate and make the pressing rod 172 block the second holding rack;

[0075] S3: The push rod of the first cylinder 134 pushes the first claw plate 137 onto the first layer of the holding rack on the stacking rod 103, and the second cylinder 136 works to push the claws of the first claw plate 137 to clamp the first layer of the holding rack; the first cylinder 134 contracts to grab the first layer of the holding rack, and the fifth motor 132 drives the first screw rod 131 to work and transport the grabbed holding rack to the top of the second rotating table 14; and the holding rack is placed on the second rotating table 14 by the first cylinder 134 and the claws of the first claw plate 137; after the holding rack is placed on the second rotating table 14, the control system controls the first claw plate 137 to return to the initial position;

[0076] S4: The distance sensor 142 faces the holder. When the upper wall of the holder faces the distance sensor 142, the distance sensor 142 transmits an electrical signal to the control system, which controls the turntable motor to rotate. When the hole on the holder faces the distance sensor 142, the control system controls the turntable motor to stop working.

[0077] S5: The fourth screw rod 114 and the fifth screw rod 115 work, clamping the retainer through the short clamping rod 1111 and the long clamping rod 1112, and placing the retainer on the third rotating platform 152;

[0078] S6: Under the action of the third cylinder 123 and the second screw 122, the support arm 126 moves to the top of the retainer; the driver 151 pushes the ball assembly guide 153 so that the ball assembly guide 153 is flush with the top of the retainer. The driver 151 then drives the third rotating platform 152 and the ball assembly guide 153 to rotate, and the ball supply pipe 127 supplies balls to the ball assembly guide 153. When the retainer is full of balls, the control system drives the driver 151 to stop working and controls the support arm 126 to return to its original position.

[0079] S7: The sixth motor 121 drives the second screw rod 122 to work, and the bead filling rack 124 moves along the second screw rod 122. Under the joint action of the fourth cylinder 183 and the third screw rod 181, the second claw plate 186 moves to the top of the conveyor belt 192 and clamps the inner ring. The inner ring is then transported to the top of the retaining rack where the balls have been installed. Under the action of the fourth cylinder 183, the inner ring is pressed into the retaining rack. At the same time, the driver 151 retracts the ball assembly guide 153.

[0080] S8: The fourth screw rod 114 and the fifth screw rod 115 work, and the assembled inner ring is clamped by the short clamping rod 1111 and the long clamping rod 1112, and the assembled inner ring is transported to the next process;

[0081] S9: The above steps complete one assembly process, and the above steps are repeated to complete the next inner ring assembly ball process.

Claims

1. An apparatus for loading balls into the inner ring of a tapered roller bearing, comprising a first rotating table (10) for storing a retainer, a clamping device (11) for clamping the retainer, and a ball pouring device (12) for pouring balls into the retainer, wherein the clamping device (11) includes at least two clamps (111) for transferring the retainer to the next station, and wherein: It also includes a first manipulator (13) for grabbing the retaining frame on the first rotating table (10), a second rotating table (14) for rotating and positioning the retaining frame, and a filling table (15) for filling the balls; The first manipulator (13) transports the retaining frame to the second rotating platform (14) for rotation positioning; The filling station (15) includes a driver (151), a third rotating platform (152), and a ball assembly guide (153) for introducing balls into a retainer. The driver (151) is connected to the third rotating platform (152) and drives the third rotating platform (152) to rotate. The driver (151) is connected to the ball assembly guide (153) and drives the third rotating platform (152) to lift and rotate. The ball assembly guide (153) is provided with a plurality of guide grooves (1531) on all sides. The ball filling device (12) fills the balls into the retainer through the guide grooves (1531).

2. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The third rotating platform (152) comprises an upper platform (1521), a lower platform (1522) and a connecting rod (1523). The upper platform (1521) is arranged above the lower platform (1522) and is fixed to the lower platform (1522) through the connecting rod (1523). The upper platform (1521) is provided with an adapting hole (1524) for placing a retaining frame. The inner wall of the adapting hole (1524) is provided with a number of notched grooves (1525) for adapting to the ball bearings. The lower platform (1522) is integrally formed with an upward protrusion located at A support platform (1526) is located directly below the adapting hole (1524). The support platform (1526) is provided with an assembly hole (1527) for the output spindle of the driver (151) to pass through. A slot (1528) is provided on the inner wall of the assembly hole (1527). The lower platform (1522) is mounted on the output spindle of the driver (151) via a bearing. A limiting protrusion is provided on the spindle of the driver (151), and the limiting protrusion of the driver (151) is adapted to the slot (1528) of the support platform (1526).

3. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The first rotating platform (10) comprises a support frame (101), a turntable (102) and a first motor (105). The turntable (102) is mounted on the support frame (101) and rotates thereon. The first motor (105) is mounted on the support frame (101) and connected to the turntable (102). The first motor (105) is used to drive the turntable (102) to rotate. The upper end surface of the turntable (102) is uniformly provided with a plurality of stacking rods (103) for stacking the retaining frames. The stacking rods (103) are arranged on the upper end surface of the turntable (102). 3) comprising a large rod end (1031) and a small rod end (1032), wherein the outer diameter of the large rod end (1031) is larger than the outer diameter of the small rod end (1032), the small rod end (1032) is mounted above the large rod end (1031), and a support washer (104) for supporting the bottom retaining frame is mounted on the small rod end (1032), and the support washer (104) is placed on the large rod end (1031), and the outer diameter of the support washer (104) is larger than the outer diameter of the large rod end (1031).

4. The device for installing balls in the inner ring of a tapered roller bearing according to claim 3, characterized in that: The invention also includes a lifting device (16), which includes a lifting screw rod (161), a second motor (162), a lifting slider (163) and a second manipulator (164) for lifting the support washer (104). The lifting slider (163) is spirally lifted on the lifting screw rod (161) and is threadedly connected to it. The output shaft of the second motor (162) is connected to the lifting screw rod (161) through a coupling and drives it to rotate. The second manipulator (164) is installed on the lifting slider (163). The second manipulator (164) includes a lifting claw (1641) and a third motor (1642). The third motor (1642) is connected to the lifting claw (1641) and drives it to open and close left and right. When the lifting claw (1641) is closed, it extends directly below the support washer (104).

5. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The device further comprises a pressing frame device (17), the pressing frame device (17) comprising a fourth motor (171) and a pressing rod (172) for pressing on the second upper retaining frame, one end of the pressing rod (172) being fastened to the output shaft of the fourth motor (171), and the fourth motor (171) being used to drive the pressing rod (172) to rotate and limit the pressing rod (172) to the upper end of the second layer retaining frame.

6. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The first manipulator (13) includes a first screw rod (131), a fifth motor (132), a first slider (133), a first cylinder (134), a first cylinder frame (135), a second cylinder (136) and a first claw plate (137). The fifth motor (132) is connected to the first screw rod (131) and drives it to rotate. The first slider (133) is threadedly mounted on the first screw rod (131) and moves along it. The cylinder body of the first cylinder (134) is tightly connected to the first slider (133). The push rod of the first cylinder (134) is connected to the first cylinder frame (135). The second cylinder (136) is mounted on the first cylinder frame (135). The push rod of the second cylinder (136) is connected to the first claw plate (137) and drives the claws on it to open and close.

7. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The ball filling device (12) includes a sixth motor (121), a second screw rod (122), a third cylinder (123), a bead filling rack (124), a second slider (125), a support arm (126) and a bead filling supply pipe (127) for filling the retaining rack with balls. The sixth motor (121) is connected to the second screw rod (122) and drives it to rotate. The bottom of the bead filling rack (124) is threadedly installed on the second screw rod (122) and moves along it. The third cylinder (123) is connected to the second screw rod (122) and drives it to rotate. 3) is mounted on a bead filling rack (124), a guide rail (128) is provided on the bead filling rack (124), a second slider (125) is mounted on the guide rail (128) and moves up and down thereon, a push rod of the third cylinder (123) is connected to the second slider (125), one end of a support arm (126) is fastened to the second slider (125), the other end of the support arm (126) extends to the top of the filling table (15), and a bead filling supply pipe (127) is mounted on the support arm (126).

8. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The invention also includes a third manipulator (18) for grabbing the inner ring and an inner ring storage device (19) for storing the inner ring. The third manipulator (18) includes a seventh motor, a third screw rod (181), a third slider (182), a fourth cylinder (183), a second cylinder frame (184), a fifth cylinder (185) and a second claw plate (186). The seventh motor is connected to the third screw rod (181) and drives it to rotate. The third slider (182) is threadedly mounted on the third screw rod (181) and moves along it. The cylinder body of the fourth cylinder (183) is connected to the third slider (182). The push rod of the fourth cylinder (183) is connected to the second cylinder frame (184). 184) is fastened to the second cylinder frame (184), the fifth cylinder (185) is installed on the second cylinder frame (184), the push rod of the fifth cylinder (185) is connected to the second claw plate (186) and drives the claw thereon to open and close; one end of the third screw rod (181) is located just above the filling table (15), and the other end thereof extends to the inner ring storage device (19), the inner ring storage device (19) includes a frame (191), a conveyor belt (192), and an eighth motor (193), the conveyor belt (192) and the eighth motor (193) are both installed on the frame (191), and the eighth motor (193) is connected to the conveyor belt (192) through a drive shaft and drives it to rotate.

9. The device for installing balls in the inner ring of a tapered roller bearing according to claim 1, characterized in that: The clamping device (11) further comprises a ninth motor (112), a tenth motor (113), a fourth screw rod (114), a fifth screw rod (115), a fourth slider (116), a fifth slider (117), a clamping frame (118) and a sixth cylinder (119), wherein the ninth motor (112) drives the fourth screw rod (114) to rotate and is mounted on the clamping frame (118), the tenth motor (113) drives the fifth screw rod (115) to rotate and is mounted on the clamping frame (118), the fourth slider (116) is threadedly mounted on the fourth screw rod (116), and the fifth slider (117) is threadedly mounted on the fourth screw rod (116). 14) and moves thereon, the fifth slider (117) is threadedly mounted on the fifth screw rod (115) and moves thereon, and the sixth cylinder (119) is mounted on both ends of the clamp frame (118), and the sixth cylinder (119) drives the clamp frame (118) to move forward and backward in the direction of the filling station (15); the clamp (111) includes a short clamp rod (1111) and a long clamp rod (1112), all of the short clamp rods (1111) are mounted on the fourth slider (116), and all of the long clamp rods (1112) are mounted on the fifth slider (117).

10. A method for installing balls in the inner ring of a tapered roller bearing, characterized in that The steps include: S1: The control system controls the first motor (105) to work, and the first motor (105) drives the turntable (102) to rotate, rotating one of the stacking rods (103) with the retaining frame to the position directly below the first claw plate (137); S2: The control system controls the third motor (1642) to drive the lifting claw (1641) to rotate and close, and the lifting claw (1641) rotates to the position directly below the support washer (104); the second motor (162) drives the lifting screw (161) to work and drives the second manipulator (164) to move upward; when the uppermost holding frame rises to the top of the stacking rod (103), the second motor (162) stops working; the fourth motor (171) drives the pressure rod (172) to rotate and causes the pressure rod (172) to block the second holding frame; S3: The push rod of the first cylinder (134) pushes the first claw plate (137) onto the first layer of the holding frame of the stacking rod (103), and the second cylinder (136) works to push the claws of the first claw plate (137) to clamp the first layer of the holding frame; the first cylinder (134) contracts to grab the first layer of the holding frame, and the fifth motor (132) drives the first screw rod (131) to work and transport the grabbed holding frame to the top of the second rotating table (14); The holder is placed on the second rotating platform (14) through the first cylinder (134) and the claws of the first claw plate (137); after the holder is placed on the second rotating platform (14), the control system controls the first claw plate (137) to return to the initial position; S4: The distance sensor (142) faces the holder; when the upper wall of the holder faces the distance sensor (142), the distance sensor (142) transmits an electrical signal to the control system, and the control system controls the turntable motor to rotate; when the hole on the holder faces the distance sensor (142), the control system controls the turntable motor to stop working; S5: The fourth screw rod (114) and the fifth screw rod (115) work, clamping the retaining frame through the short clamping rod (1111) and the long clamping rod (1112), and placing the retaining frame on the third rotating platform (152); S6: The support arm (126) moves to the top of the retaining frame under the action of the third cylinder (123) and the second screw rod (122); the driver (151) pushes the ball assembly guide (153) so that the ball assembly guide (153) is flush with the top of the retaining frame, and the driver (151) drives the third rotating platform (152) and the ball assembly guide (153) to rotate, and the ball supply pipe (127) supplies balls to the ball assembly guide (153); when the retaining frame is full of balls, the control system drives the driver (151) to stop working and controls the support arm (126) to return to its original position; S7: The sixth motor (121) drives the second screw (122) to work, and the bead filling rack (124) moves along the second screw (122); under the joint action of the fourth cylinder (183) and the third screw (181), the second claw plate (186) moves to the top of the conveyor belt (192) and clamps the inner ring, and then transports the inner ring to the top of the retaining rack where the balls have been installed; under the action of the fourth cylinder (183), the inner ring is pressed into the retaining rack; at the same time, the driver (151) contracts the ball assembly guide (153); S8: The fourth screw rod (114) and the fifth screw rod (115) work, and the assembled inner ring is clamped by the short clamping rod (1111) and the long clamping rod (1112), and the assembled inner ring is transported to the next process; S9: The above steps complete one assembly process, and the above steps are repeated to complete the next inner ring assembly ball process.

Images