Motor output shaft and bearing assembly apparatus and method

Abstract

The application discloses a motor output shaft and bearing assembling equipment and an assembling method. The equipment comprises an oiling tool, a sealing ring mounting tool and a pressure joint tool arranged in sequence along a straight line, a tool transfer mechanism for driving the pressure joint tool to move along the straight line, an output shaft carrying mechanism for taking out the output shaft from a production line for carrying, an oiling mechanism arranged corresponding to the position of the oiling tool, a sealing ring mounting mechanism arranged corresponding to the position of the sealing ring mounting tool, a plurality of bearing feeding mechanisms arranged along the tool transfer mechanism, a bearing feeding mechanism for carrying the bearing output by the bearing feeding mechanism to the bearing in the pressure joint tool, and a bearing pressure joint mechanism arranged above the transfer path of the tool transfer mechanism. The bearing feeding mechanism and the bearing feeding mechanism are arranged on opposite sides of the tool transfer mechanism. The application has compact layout, small space occupation and high assembling efficiency.

Description

[Technical Field]

[0001] This invention belongs to the technical field of motor assembly equipment, and in particular relates to a motor output shaft and bearing assembly equipment and assembly method. [Background Technology]

[0002] There is a drive assembly that includes a motor, output shaft, shift fork, and housing, among other components. The output shaft requires the assembly of a seal and bearing, depending on the requirements. To automate the production of this drive assembly, an automated assembly line is planned. Specifically, to automate the assembly of the output shaft with the seal and bearing, an automated assembly device for the motor output shaft, bearing, and seal needs to be designed.

[0003] In the prior art, patent publication number CN113635025B discloses a fully automatic assembly equipment, which only discloses the assembly of sealing rings. Patent publication number CN110587297A discloses a connecting rod assembly device, which has a relatively complex structure and occupies a large space. Although it realizes the press-fitting of bearings and the assembly of sealing rings, it cannot be directly applied to the above-mentioned output shaft products, nor can it be directly integrated into the overall assembly production line of drive components.

[0004] Therefore, a new assembly equipment and method for assembling the motor output shaft and bearing is needed to solve the above problems. [Summary of the Invention]

[0005] The main objective of this invention is to provide a motor output shaft and bearing assembly device with a compact overall structure and small space occupation. It realizes a series of automated operations such as automatic oiling of the output shaft, automatic feeding of sealing rings, automatic installation of sealing rings, automatic feeding of bearings, and automatic pressing of bearings, which greatly improves the assembly efficiency.

[0006] The present invention achieves the above-mentioned objective through the following technical solution: a motor output shaft and bearing assembly device, comprising an oiling fixture, a sealing ring installation fixture and a pressing fixture arranged sequentially along a straight line, a fixture transfer mechanism for driving the pressing fixture to move along the straight line, an output shaft transport mechanism for taking the output shaft out of the production line for transport, an oiling mechanism corresponding to the position of the oiling fixture, a sealing ring installation mechanism corresponding to the position of the sealing ring installation fixture, a plurality of bearing feeding mechanisms arranged along the fixture transfer mechanism, a bearing loading mechanism for transporting the bearings output by the bearing feeding mechanisms to the pressing fixture, and a bearing pressing mechanism arranged above the transfer path of the fixture transfer mechanism; the bearing loading mechanism and the bearing feeding mechanism are arranged on opposite sides of the fixture transfer mechanism.

[0007] Furthermore, the oiling fixture includes a first support base, a first motor fixed below the first support base, a first carrier seat rotatably mounted on the first support base and driven to rotate by the first motor, and a first sensor for detecting whether an output shaft is placed on the first carrier seat; the first carrier seat is provided with a first limiting groove for supporting the output shaft, and the bottom of the first limiting groove is provided with a plurality of first positioning pins for steering and positioning the output shaft; the oiling mechanism includes a first cylinder, a first support plate driven by the first cylinder to move perpendicular to the linear motion, and an oil injection valve assembly fixed on the first support plate, and an oil receiving box is provided below the oil injection valve assembly.

[0008] Furthermore, the sealing ring installation fixture includes a second support base, a second sensor for detecting whether there is an output shaft on the second support base, and a third sensor for detecting whether there is a sealing ring mounted on the output shaft.

[0009] Furthermore, the sealing ring installation mechanism includes a vibratory feeder that arranges and outputs sealing rings, a receiving block disposed at the output end of the vibratory feeder, an inner support lifting module that pushes the sealing rings on the receiving block upwards, and an installation and handling module that removes the sealing rings from the inner support lifting module and assembles them onto the output shaft; the receiving block is provided with a docking channel that connects with the output flow channel of the vibratory feeder, and a blocking surface is formed at the end of the docking channel; the receiving block is provided with a fourth sensor that detects whether a sealing ring has arrived at the end of the docking channel.

[0010] Furthermore, the inner support lifting module includes an inner support block located at the end of the docking channel and a second cylinder that drives the inner support block to move up and down; the installation and handling module includes a third cylinder, a second support plate driven by the third cylinder to move perpendicular to the linear motion, a fifteenth cylinder fixed on the second support plate, a tenth support plate driven by the fifteenth cylinder to move up and down, a fourth cylinder and a fifth cylinder fixed on the tenth support plate, a plurality of pneumatic grippers driven by the fourth cylinder to open or close, and a first pressure sleeve driven by the fifth cylinder to move up and down and surrounding the pneumatic grippers; the inner support block is provided with an annular clearance notch for the pneumatic grippers to extend into.

[0011] Furthermore, the output shaft conveying mechanism includes a second motor, a third support plate driven by the second motor to move along the linear direction, a third motor fixed on the third support plate, a fourth support plate driven by the third motor to move up and down, a sixth cylinder fixed on the fourth support plate, a fifth support plate driven by the sixth cylinder to move perpendicular to the linear direction, a seventh cylinder fixed on the fifth support plate, and an output shaft gripper driven by the seventh cylinder to perform opening or clamping actions.

[0012] Furthermore, the crimping fixture includes a sixth support plate driven by the fixture transfer mechanism to move horizontally, a second bearing seat fixed on the sixth support plate, a pair of bearing positioning blocks horizontally slidably disposed on the sixth support plate and located opposite each other above the second bearing seat, a first elastic element with both ends hanging on the pair of bearing positioning blocks and pulling the pair of bearing positioning blocks together, and positioning guide sleeves located on opposite sides of the second bearing seat; the second bearing seat is provided with a second limiting groove for supporting the output shaft, and the bottom of the second limiting groove is provided with a plurality of second positioning pins that cooperate with the positioning holes on the output shaft; the bearing positioning blocks are gathered together to form a bearing limiting groove for limiting the circumference of the bearing.

[0013] Furthermore, the bearing feeding mechanism includes an eighth cylinder, a seventh support plate driven by the eighth cylinder to move perpendicular to the linear motion, a bearing clip mounted on the seventh support plate, a pusher plate that pushes out the bottommost bearing through horizontal movement below the bottom output port of the bearing clip, a ninth cylinder fixed on the seventh support plate and driving the pusher plate to move horizontally, a support plate located below the bearing clip to support the movement of the bearing, and a bearing limiting block fixed on the support plate and located at the end of the pusher plate to block the bearing; the end of the pusher plate is provided with a first V-shaped positioning groove, and the side of the bearing limiting block facing the pusher plate is provided with a second V-shaped positioning groove.

[0014] Furthermore, the bearing loading mechanism includes a tenth cylinder, an eighth support plate driven by the tenth cylinder to move parallel to the linear motion, an eleventh and twelfth cylinders fixed on the eighth support plate, a thirteenth cylinder driven by the eleventh cylinder to move perpendicular to the linear motion, a fourteenth cylinder driven by the thirteenth cylinder to move up and down, a bearing gripper driven by the fourteenth cylinder to open or clamp, and an opening clamping block driven by the twelfth cylinder to move perpendicular to the linear motion to open the pair of bearing positioning blocks.

[0015] Furthermore, the bearing press-fitting mechanism includes a fourth motor, a ninth support plate driven by the fourth motor to move up and down, a second press sleeve fixed to the lower surface of the ninth support plate, a third press sleeve elastically floating inside the second press sleeve and extending out of the second press sleeve at its bottom, a positioning guide rod fixed to the ninth support plate and extending into the positioning guide sleeve to position the press-fitting fixture, and a pressure sensor for detecting the pressure applied by the second press sleeve to the bearing; a second elastic element is provided inside the second press sleeve to press the third press sleeve downward; a hollow groove is formed inside the third press sleeve for the top of the output shaft to extend into; the bottom end of the third press sleeve presses against the convex ring end face on the outer periphery of the output shaft and presses the output shaft downward.

[0016] Another object of the present invention is to provide an assembly method based on the above-mentioned motor output shaft and bearing assembly equipment, which includes the following steps:

[0017] S1. The output shaft transport mechanism takes the output shaft out of the tray on the production line and transports it to the oiling fixture.

[0018] S2. The oiling mechanism performs an oiling operation on the output shaft of the oiling fixture, and at the same time, the oiling fixture drives the output shaft to rotate one revolution.

[0019] S3. The output shaft transport mechanism takes the output shaft off the oiling fixture and transports it to the sealing ring mounting fixture.

[0020] S4. The sealing rings are arranged and output to the end via a vibratory feeder. An inner support block moves upward to lift the sealing rings and distribute them. The pneumatic gripper in the installation and handling module extends into the sealing ring and then expands outward to support the sealing ring and transport it to the output shaft. The output shaft is provided with an annular groove for placing the sealing rings. At this time, the pneumatic gripper covers the outer periphery of the upper section of the output shaft and is located above the annular groove. The first pressure sleeve in the installation and handling module moves downward to push the sealing rings on the pneumatic gripper downward into the annular groove. At the same time, the sealing rings disengage from the pneumatic gripper and are clamped in the annular groove by their own elastic properties.

[0021] S5. The tooling transfer mechanism drives the crimping tooling to move below the output shaft transport mechanism, and the output shaft transport mechanism clamps the output shaft from the sealing ring mounting tooling to the crimping tooling.

[0022] S6. The tooling transfer mechanism drives the crimping tooling carrying the output shaft to move to the bearing feeding mechanism of the corresponding model. The clamping block in the bearing feeding mechanism extends out and opens the two bearing positioning blocks on the crimping tooling to put them in the open state.

[0023] S7. The bearing feeding mechanism outputs a bearing to a set position, and the bearing chuck in the bearing loading mechanism clamps the bearing at the set position and then places it in the bearing limiting groove on the pressing fixture to realize the loading and pre-positioning of the bearing.

[0024] S8. The tooling transfer mechanism drives the pressing tooling to move below the bearing pressing mechanism. The third pressing sleeve in the bearing pressing mechanism first presses against the convex ring end face on the outer periphery of the output shaft to keep the position of the output shaft stable. Then, the second pressing sleeve in the bearing pressing mechanism presses against the bearing. As the second pressing sleeve continues to descend, the bearing is pressed into place to obtain the output shaft assembly.

[0025] S9. The tooling transfer mechanism drives the crimping tooling carrying the output shaft assembly to move to below the output shaft transport mechanism. The output shaft transport mechanism clamps the output shaft assembly and then places it back into the carrier tray on the production line, which is then transported to the next assembly station along with the production line.

[0026] Compared with the prior art, the beneficial effects of the motor output shaft and bearing assembly equipment and method of the present invention are as follows: the oiling station, the sealing ring installation station, the bearing loading station, and the bearing pressing station are all set on the same straight line, resulting in a short output shaft transfer path; the corresponding oiling mechanism, sealing ring installation mechanism, bearing feeding mechanism, bearing loading mechanism, and bearing pressing mechanism are all set along each operating station, resulting in a compact overall equipment layout and small space occupation; by designing the pressing fixture, a limiting groove is set in the pressing fixture to limit the output shaft, and a clamping and positioning mechanism for the bearing is set above the limiting groove of the output shaft. The bearing positioning block ensures that the bearing maintains its relative positional accuracy and stability with the output shaft after loading, preventing relative displacement during transport to the bearing pressing mechanism and thus ensuring pressing accuracy. The bearing pressing mechanism incorporates a second and a third pressure sleeve. The third pressure sleeve elastically holds the output shaft, ensuring its positional stability. With the output shaft in a stable position, the second pressure sleeve then presses the bearing to achieve pressing, further guaranteeing the quality and accuracy of the output shaft and bearing pressing. This equipment can be directly integrated into the production line to meet the requirements of automated assembly processes for motor components. [Attached Image Description]

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0028] Figure 2 This is a top view of the structure according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the oiling fixture and oiling mechanism in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the sealing ring mounting fixture and sealing ring mounting mechanism in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the internal support lifting module in an embodiment of the present invention;

[0032] Figure 6 This is a top view of the receiving block in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure for installing the handling module in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the output shaft transport mechanism in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the bearing feeding, loading, and pressing mechanism in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the crimping tool in an embodiment of the present invention;

[0037] Figure 11 This is a partial structural diagram of the crimping tool in an embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram of the bearing feeding mechanism and bearing loading mechanism in an embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram of the bearing press-fitting mechanism in an embodiment of the present invention;

[0040] The numbers in the diagram represent:

[0041] 100 - Assembly equipment for motor output shaft and bearing;

[0042] 200 - Output shaft; 300 - Sealing ring; 400 - Bearing;

[0043] 1-Oil application fixture, 11-First support base, 12-First motor, 13-First bearing base, 131-First limiting groove, 132-First positioning post, 14-First sensor;

[0044] 2-Sealing ring installation fixture, 21-Second support seat, 22-Second sensor, 23-Third sensor;

[0045] 3-Crimping fixture, 31-Sixth support plate, 32-Second bearing seat, 321-Second limiting groove, 322-Second positioning post, 33-Bearing positioning block, 331-Bearing limiting groove, 332-Roller, 34-First elastic element, 35-Positioning guide sleeve;

[0046] 4-Tooling transfer mechanism;

[0047] 5-Output shaft conveying mechanism, 51-Second motor, 52-Third support plate, 53-Third motor, 54-Fourth support plate, 55-Sixth cylinder, 56-Fifth support plate, 57-Seventh cylinder, 58-Output shaft gripper;

[0048] 6-Oil application mechanism, 61-First cylinder, 62-First support plate, 63-Oil injection valve assembly, 64-Oil receiving box;

[0049] 7-Sealing ring installation mechanism, 71-Vibrating plate, 72-Receiving block, 721-Docking channel, 722-Fourth sensor, 73-Inner support lifting module, 731-Inner support block, 7311-Avoidance notch, 732-Second cylinder, 74-Installation and handling module, 741-Third cylinder, 742-Second support plate, 743-Fourth cylinder, 744-Fifth cylinder, 745-Pneumatic gripper, 746-First pressure sleeve, 747-Fifteenth cylinder, 748-Tenth support plate;

[0050] 8-Bearing feeding mechanism, 81-Eighth cylinder, 82-Seventh support plate, 83-Bearing clip, 84-Push plate, 85-Ninth cylinder, 86-Bearing limit block, 87-Support plate;

[0051] 9-Bearing feeding mechanism, 91-Tenth cylinder, 92-Eighth support plate, 93-Eleventh cylinder, 94-Twelfth cylinder, 95-Thirteenth cylinder, 96-Fourteenth cylinder, 97-Bearing gripper, 98-Clamping block;

[0052] 10-Bearing press-fitting mechanism, 101-Fourth motor, 102-Ninth support plate, 103-Second press sleeve, 104-Third press sleeve, 105-Positioning guide rod, 106-Pressure sensor.

Detailed Implementation Methods

[0053] Example:

[0054] Please refer to Figures 1-13 This embodiment is a motor output shaft and bearing assembly equipment 100, which includes an oiling fixture 1, a sealing ring installation fixture 2 and a pressing fixture 3 arranged sequentially along the same straight line, a fixture transfer mechanism 4 that drives the pressing fixture 3 to move along the straight line, an output shaft transport mechanism 5 that takes the output shaft 200 out of the production line for transport, an oiling mechanism 6 arranged corresponding to the position of the oiling fixture 1, a sealing ring installation mechanism 7 arranged corresponding to the position of the sealing ring installation fixture 2, a plurality of bearing feeding mechanisms 8 arranged along the fixture transfer mechanism 4, a bearing loading mechanism 9 that transports the bearings output by the bearing feeding mechanism 8 to the pressing fixture 3, and a bearing pressing mechanism 10 arranged above the transfer path of the fixture transfer mechanism 4; the bearing loading mechanism 9 and the bearing feeding mechanism 8 are arranged on opposite sides of the fixture transfer mechanism 4.

[0055] The output shaft transport mechanism 5 removes the output shaft 200 from the tray on the production line and places it on the oiling fixture 1. The oiling mechanism 6 performs an oiling operation on the output shaft 200 at the set position. Afterward, the output shaft transport mechanism 5 transports the output shaft 200 from the oiling fixture 1 to the sealing ring mounting fixture 2. The sealing ring mounting mechanism 7 picks up a sealing ring 300 and installs it onto the output shaft 200. Then, the output shaft transport mechanism 5 transports the output shaft 200 from the sealing ring mounting fixture 2 to the crimping fixture 3. The fixture transfer mechanism 4 drives the crimping fixture... The assembly 3 moves to the position of the bearing feeding mechanism 8; the bearing loading mechanism 9 takes out a bearing 400 from the bearing feeding mechanism 8 and places it into the pressing fixture 3 to achieve pre-installation of the bearing; then the fixture transfer mechanism 4 drives the pressing fixture 3 to move below the bearing pressing mechanism 10, and the bearing 400 is pressed onto the output shaft 200 by the bearing pressing mechanism 10; the fixture transfer mechanism 4 drives the pressing fixture 3 back to the initial position, and the output shaft transport mechanism 5 takes out the output shaft with the sealing ring and bearing installed, and then transports it to the production line and puts it back into the carrier tray.

[0056] The oiling fixture 1 includes a first support base 11, a first motor 12 fixed below the first support base 11, a first carrier 13 rotatably mounted on the first support base 11 and driven to rotate by the first motor 12, and a first sensor 14 for detecting whether an output shaft is inserted into the first carrier 13. The first carrier 13 has a first limiting groove 131 for supporting the output shaft 200, and the bottom of the first limiting groove 131 has several first positioning pins 132 for directional positioning of the output shaft 200. Positioning holes are provided on the end face of the output shaft 200, and the first positioning pins 132 achieve directional positioning of the output shaft 200 by inserting into the positioning holes.

[0057] The oiling mechanism 6 includes a first cylinder 61, a first support plate 62 driven by the first cylinder 61 to move perpendicular to the linear motion, and an oil injection valve assembly 63 fixed on the first support plate 62. An oil receiving box 64 is provided below the oil injection valve assembly 63.

[0058] The output shaft transport mechanism 5 places the output shaft 200 in the first limiting groove 131 on the first bearing seat 13. The first cylinder 61 drives the oil injection valve assembly 63 to extend close to the outer peripheral surface of the output shaft 200. Then, the first motor 12 drives the first bearing seat 13 to rotate one revolution, and at the same time, the oil injection valve assembly 63 starts to inject oil to complete the oiling operation.

[0059] The sealing ring installation fixture 2 includes a second support base 21, a second sensor 22 for detecting whether there is an output shaft on the second support base 21, and a third sensor 23 for detecting whether there is a sealing ring mounted on the output shaft 200.

[0060] The sealing ring installation mechanism 7 includes a vibratory plate 71 that arranges the output sealing rings 300, a receiving block 72 set at the output end of the vibratory plate 71, an inner support lifting module 73 that pushes the sealing rings on the receiving block 72 upward and opens them up, and an installation and handling module 74 that takes out the sealing rings from the inner support lifting module 73 and assembles them onto the output shaft 200.

[0061] The receiving block 72 is provided with a docking channel 721 that connects with the output flow channel of the vibratory feeder 71, and a blocking surface is formed at the end of the docking channel 721. The receiving block 72 is provided with a fourth sensor 722 for detecting whether a sealing ring has reached the end of the docking channel 721.

[0062] The inner support lifting module 73 includes an inner support block 731 located at the end of the docking channel 721 and a second cylinder 732 that drives the inner support block 731 to move up and down. The inner support block 731 lifts the sealing ring 300 upward from its inner ring and keeps it in an open, circular state. When the sealing ring 300 reaches the end of the docking channel 721, the fourth sensor 722 senses a signal, and the inner support block 731 moves upward to lift the sealing ring 300 and dispense the material.

[0063] The installation and handling module 74 includes a third cylinder 741, a second support plate 742 driven by the third cylinder 741 to move perpendicular to the linear motion, a fifteenth cylinder 747 fixed on the second support plate 742, a tenth support plate 748 driven by the fifteenth cylinder 747 to move up and down, a fourth cylinder 743 and a fifth cylinder 744 fixed on the tenth support plate 748, a plurality of pneumatic grippers 745 driven by the fourth cylinder 743 to open or close, and a first pressure sleeve 746 driven by the fifth cylinder 744 to move up and down and surrounding the pneumatic grippers 745. The pneumatic grippers 745 expand outward from inside the sealing ring 300 to lift the sealing ring 300 and pick it up. The first pressure sleeve 746 pushes the sealing ring fitted around the pneumatic grippers 745 downward through up and down movement to remove and install the sealing ring.

[0064] To facilitate the pneumatic gripper 745's insertion into the docking channel 721 and the pickup of the sealing ring from the inner support block 731, the inner support block 731 is provided with an annular clearance notch 7311 for the pneumatic gripper 745 to insert. The pneumatic gripper 745 extends into the clearance notch 7311 to enter the inner ring range of the sealing ring, and then supports the sealing ring by synchronous outward expansion and transfers it to the pneumatic gripper 745. Then, the pneumatic gripper 745 moves upward to remove the sealing ring from the inner support block 731.

[0065] The output shaft conveying mechanism 5 includes a second motor 51, a third support plate 52 driven by the second motor 51 to move along the linear direction, a third motor 53 fixed on the third support plate 52, a fourth support plate 54 driven by the third motor 53 to move up and down, a sixth cylinder 55 fixed on the fourth support plate 54, a fifth support plate 56 driven by the sixth cylinder 55 to move perpendicular to the linear direction, a seventh cylinder 57 fixed on the fifth support plate 56, and an output shaft gripper 58 driven by the seventh cylinder 57 to perform opening or clamping actions.

[0066] The crimping fixture 3 includes a sixth support plate 31 driven by the fixture transfer mechanism 4 to move horizontally, a second bearing seat 32 fixed on the sixth support plate 31, a pair of bearing positioning blocks 33 horizontally slidably disposed on the sixth support plate 31 and located opposite each other above the second bearing seat 32, a first elastic member 34 with both ends hanging on the pair of bearing positioning blocks 33 and pulling the pair of bearing positioning blocks 33 together, and positioning guide sleeves 35 located on opposite sides of the second bearing seat 32.

[0067] The second bearing seat 32 is provided with a second limiting groove 321 that supports the output shaft 200. The bottom of the second limiting groove 321 is provided with a plurality of second positioning pins 322 that cooperate with the positioning holes on the output shaft.

[0068] The bearing positioning blocks 33 are joined together to form a bearing limiting groove 331 that limits the circumference of the bearing 400. The bearing positioning blocks 33 are clamped around the outer circumference of the bearing 400 to achieve pre-positioning of the bearing 400. Each of the upper surfaces of a pair of bearing positioning blocks 33 is provided with a roller 332.

[0069] The bearing feeding mechanism 8 includes an eighth cylinder 81, a seventh support plate 82 driven by the eighth cylinder 81 to move perpendicular to the linear motion, a bearing clip 83 mounted on the seventh support plate 82, a pusher plate 84 below the bottom output port of the bearing clip 83 that pushes out the lowest bearing through horizontal movement, a ninth cylinder 85 fixed on the seventh support plate 82 and driving the pusher plate 84 to move horizontally, a support plate 87 located below the bearing clip 83 to support the movement of the bearing, and a bearing limiting block 86 fixed on the support plate 87 and located at the end of the pusher plate 84 to block the bearing. The end of the pusher plate 84 is provided with a first V-shaped positioning groove (not shown in the figure), and the side of the bearing limiting block 86 facing the pusher plate 84 is provided with a second V-shaped positioning groove (not shown in the figure). The pusher plate 84 pushes the bearing to move on the support plate 87 until the bearing 400 abuts against the bearing limiting block 86, and the bearing is positioned by the first V-shaped positioning groove and the second V-shaped positioning groove.

[0070] The bearing loading mechanism 9 includes a tenth cylinder 91, an eighth support plate 92 driven by the tenth cylinder 91 to move parallel to the linear motion, an eleventh cylinder 93 and a twelfth cylinder 94 fixed on the eighth support plate 92, a thirteenth cylinder 95 driven by the eleventh cylinder 94 to move perpendicular to the linear motion, a fourteenth cylinder 96 driven by the thirteenth cylinder 95 to move up and down, a bearing gripper 97 driven by the fourteenth cylinder 96 to perform opening or clamping actions, and an opening clamping block 98 driven by the twelfth cylinder 94 to move perpendicular to the linear motion to open the pair of bearing positioning blocks 33.

[0071] Multiple bearing feeding mechanisms 8 are set along the transfer path of the tooling transfer mechanism 4 to meet the bearing feeding needs of different models of output shafts. The tenth cylinder 91 is used to drive the clamping block 98 and the bearing gripper 97 to move at different positions of the bearing feeding mechanism 8. The bearing gripper 97 clamps the bearing pushed out by the pusher plate 84 at the end of the support plate 87. At the same time, the clamping block 98 inserts between the two rollers 332 to open the two bearing positioning blocks 33. The bearing gripper 97 clamps the bearing 400 and puts it into the bearing limiting groove 331. The clamping block 98 retracts, and the bearing positioning block 33 clamps the bearing, completing the bearing loading and pre-assembly.

[0072] The bearing press-fitting mechanism 10 includes a fourth motor 101, a ninth support plate 102 driven by the fourth motor 101 to move up and down, a second press sleeve 103 fixed to the lower surface of the ninth support plate 102, a third press sleeve 104 elastically floating inside the second press sleeve 103 and extending out of the second press sleeve 103 at its bottom, a positioning guide rod 105 fixed to the ninth support plate 102 and extending into the positioning guide sleeve 35 to position the press-fitting fixture 3, and a pressure sensor 106 for detecting the pressure applied by the second press sleeve 103 to the bearing 400. A second elastic element (not shown in the figure) is provided inside the second press sleeve 103 to press the third press sleeve 104 downwards. A hollow groove is formed inside the third press sleeve 104 for the top of the output shaft 200 to extend into. The bottom end of the third pressure sleeve 104 presses against the convex ring end face on the outer periphery of the output shaft 200 to press the output shaft 200 downward and ensure the positional stability of the output shaft 200; the second pressure sleeve 103 is used to press the bearing 400 downward and press it into place. During the pressing process, the pressure sensor 106 can monitor the pressing force in real time to prevent damage to the product.

[0073] This embodiment also provides a method for assembling a motor output shaft and a bearing, which includes the following steps:

[0074] S1. Output shaft transport mechanism 5 takes the output shaft 200 from the tray on the production line and transports it to the oiling fixture 1.

[0075] S2. The oiling mechanism 6 performs an oiling operation on the output shaft 200 on the oiling fixture 1. At the same time, the oiling fixture 1 drives the output shaft 200 to rotate one revolution.

[0076] S3. The output shaft transport mechanism 5 takes out the output shaft 200 from the oiling fixture 1 and transports it to the sealing ring installation fixture 2.

[0077] S4. The sealing rings are arranged and output to the receiving block 72 via the vibrating plate 71. The inner support block 731 moves upward to lift the sealing rings 300 upward and distribute the material. The pneumatic gripper 745 in the installation and handling module 74 extends into the sealing ring 300 and then expands outward to support the sealing ring 300 and transport it to the output shaft 200. The output shaft 200 is provided with an annular groove for placing the sealing ring 300. At this time, the pneumatic gripper 745 covers the outer periphery of the upper section of the output shaft 200 and is located above the annular groove. The first pressure sleeve 746 in the installation and handling module 74 moves downward to push the sealing ring 300 on the pneumatic gripper 745 downward into the annular groove. At the same time, the sealing ring 300 disengages from the pneumatic gripper 745 and is clamped in the annular groove by its own elastic properties.

[0078] S5. The tooling transfer mechanism 4 drives the pressing tooling 3 to move below the output shaft transport mechanism 5. The output shaft transport mechanism 5 clamps the output shaft 200 from the sealing ring mounting tooling 2 to the pressing tooling 3 and places it in the second limiting groove 321.

[0079] S6. The tooling transfer mechanism 4 drives the pressing tooling 3 carrying the output shaft 200 to move to the bearing feeding mechanism 8 of the corresponding model. The opening block 98 in the bearing feeding mechanism 9 extends out and opens the two bearing positioning blocks 33 on the pressing tooling 3 so that they are in the open state.

[0080] S7. The bearing feeding mechanism 8 outputs a bearing 400 to the set position. The bearing gripper 97 in the bearing loading mechanism 9 clamps the bearing 400 at the set position and then places it in the bearing limiting groove 331 on the pressing fixture 3 to realize the loading and pre-positioning of the bearing.

[0081] S8. The tooling transfer mechanism 4 drives the pressing tool 3 to move below the bearing pressing mechanism 10. The third pressing sleeve 104 first presses on the convex ring end face of the outer periphery of the output shaft 200 to keep the position of the output shaft 200 stable. Then the second pressing sleeve 103 presses on the bearing 400. As the second pressing sleeve 103 continues to descend, the bearing 400 is pressed downward into place to obtain the output shaft assembly.

[0082] S9. The tooling transfer mechanism 4 drives the crimping tooling 3 carrying the output shaft assembly to move below the output shaft transport mechanism 5. The output shaft transport mechanism 5 clamps the output shaft assembly and then puts it back into the carrier tray on the production line, and then transports it to the next assembly station along with the production line.

[0083] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. An assembly device for a motor output shaft and bearing, characterized in that: It includes an oiling fixture, a sealing ring installation fixture, and a pressing fixture arranged sequentially along a straight line; a fixture transfer mechanism that drives the pressing fixture to move along the straight line; an output shaft transport mechanism that removes the output shaft from the production line for transport; an oiling mechanism corresponding to the position of the oiling fixture; a sealing ring installation mechanism corresponding to the position of the sealing ring installation fixture; several bearing feeding mechanisms arranged along the fixture transfer mechanism; a bearing loading mechanism that transports the bearings output by the bearing feeding mechanisms to the pressing fixture; and a bearing pressing mechanism arranged above the transfer path of the fixture transfer mechanism; the bearing loading mechanism and the bearing feeding mechanism are arranged on opposite sides of the fixture transfer mechanism. The sealing ring installation mechanism includes a vibratory feeder that arranges and outputs sealing rings, a receiving block disposed at the output end of the vibratory feeder, an inner support lifting module that pushes the sealing rings on the receiving block upwards, and an installation and handling module that removes the sealing rings from the inner support lifting module and assembles them onto the output shaft; the receiving block is provided with a docking channel that connects with the output flow channel of the vibratory feeder, and a blocking surface is formed at the end of the docking channel; the receiving block is provided with a fourth sensor that detects whether a sealing ring has arrived at the end of the docking channel; The inner support lifting module includes an inner support block located at the end of the docking channel and a second cylinder that drives the inner support block to move up and down; the installation and handling module includes a third cylinder, a second support plate driven by the third cylinder to move perpendicular to the linear motion, a fifteenth cylinder fixed on the second support plate, a tenth support plate driven by the fifteenth cylinder to move up and down, a fourth cylinder and a fifth cylinder fixed on the tenth support plate, a plurality of pneumatic grippers driven by the fourth cylinder to open or close, and a first pressure sleeve driven by the fifth cylinder to move up and down and surrounding the pneumatic grippers; the inner support block is provided with an annular clearance notch for the pneumatic grippers to extend into. The crimping fixture includes a sixth support plate driven by the fixture transfer mechanism to move horizontally, a second bearing seat fixed on the sixth support plate, a pair of bearing positioning blocks horizontally slidably disposed on the sixth support plate and positioned opposite each other above the second bearing seat, a first elastic element with both ends hanging on the pair of bearing positioning blocks and pulling the pair of bearing positioning blocks together, and positioning guide sleeves located on opposite sides of the second bearing seat; the second bearing seat is provided with a second limiting groove for supporting the output shaft, and the bottom of the second limiting groove is provided with a plurality of second positioning pins that cooperate with the positioning holes on the output shaft; the pair of bearing positioning blocks together form a bearing limiting groove for limiting the circumference of the bearing. The bearing loading mechanism includes a tenth cylinder, an eighth support plate driven by the tenth cylinder to move parallel to the linear motion, an eleventh and twelfth cylinders fixed on the eighth support plate, a thirteenth cylinder driven by the eleventh cylinder to move perpendicular to the linear motion, a fourteenth cylinder driven by the thirteenth cylinder to move up and down, a bearing gripper driven by the fourteenth cylinder to open or clamp, and an opening clamping block driven by the twelfth cylinder to move perpendicular to the linear motion to open the pair of bearing positioning blocks. The bearing press-fitting mechanism includes a fourth motor, a ninth support plate driven by the fourth motor to move up and down, a second press sleeve fixed to the lower surface of the ninth support plate, a third press sleeve elastically floating inside the second press sleeve and extending out of the second press sleeve at its bottom, a positioning guide rod fixed to the ninth support plate and extending into the positioning guide sleeve to position the press-fitting fixture, and a pressure sensor for detecting the pressure applied by the second press sleeve to the bearing; a second elastic element is provided inside the second press sleeve to press the third press sleeve downward; a hollow groove is formed inside the third press sleeve for the top of the output shaft to extend into; the bottom end of the third press sleeve presses against the convex ring end face on the outer periphery of the output shaft and presses the output shaft downward.

2. The motor output shaft and bearing assembly equipment as described in claim 1, characterized in that: The oiling fixture includes a first support base, a first motor fixed below the first support base, a first carrier seat rotatably mounted on the first support base and driven to rotate by the first motor, and a first sensor for detecting whether an output shaft is placed on the first carrier seat; the first carrier seat is provided with a first limiting groove for supporting the output shaft, and the bottom of the first limiting groove is provided with a plurality of first positioning pins for steering and positioning the output shaft; the oiling mechanism includes a first cylinder, a first support plate driven by the first cylinder to move perpendicular to the linear motion, and an oil injection valve assembly fixed on the first support plate, and an oil receiving box is provided below the oil injection valve assembly.

3. The motor output shaft and bearing assembly equipment as described in claim 1, characterized in that: The sealing ring installation fixture includes a second support base, a second sensor for detecting whether there is an output shaft on the second support base, and a third sensor for detecting whether there is a sealing ring assembled on the output shaft.

4. The motor output shaft and bearing assembly equipment as described in claim 1, characterized in that: The output shaft conveying mechanism includes a second motor, a third support plate driven by the second motor to move along the linear direction, a third motor fixed on the third support plate, a fourth support plate driven by the third motor to move up and down, a sixth cylinder fixed on the fourth support plate, a fifth support plate driven by the sixth cylinder to move perpendicular to the linear direction, a seventh cylinder fixed on the fifth support plate, and an output shaft gripper driven by the seventh cylinder to perform opening or clamping actions.

5. The motor output shaft and bearing assembly equipment as described in claim 1, characterized in that: The bearing feeding mechanism includes an eighth cylinder, a seventh support plate driven by the eighth cylinder to move perpendicular to the linear motion, a bearing clip mounted on the seventh support plate, a pusher plate that pushes out the bottom bearing through horizontal movement below the bottom output port of the bearing clip, a ninth cylinder fixed on the seventh support plate and driving the pusher plate to move horizontally, a support plate located below the bearing clip to support the movement of the bearing, and a bearing limiting block fixed on the support plate and located at the end of the pusher plate to block the bearing; the end of the pusher plate is provided with a first V-shaped positioning groove, and the side of the bearing limiting block facing the pusher plate is provided with a second V-shaped positioning groove.

6. A method for assembling a motor output shaft and a bearing, characterized in that: It is implemented based on the motor output shaft and bearing assembly equipment as described in any one of claims 1 to 5, and includes the following steps: S1. The output shaft transport mechanism takes the output shaft out of the tray on the production line and transports it to the oiling fixture. S2. The oiling mechanism performs an oiling operation on the output shaft of the oiling fixture, and at the same time, the oiling fixture drives the output shaft to rotate one revolution. S3. The output shaft transport mechanism takes the output shaft off the oiling fixture and transports it to the sealing ring mounting fixture. S4. The sealing rings are arranged and output to the end via a vibratory feeder. An inner support block moves upward to lift the sealing rings and distribute them. The pneumatic gripper in the installation and handling module extends into the sealing ring and then expands outward to support the sealing ring and transport it to the output shaft. The output shaft is provided with an annular groove for placing the sealing rings. At this time, the pneumatic gripper covers the outer periphery of the upper section of the output shaft and is located above the annular groove. The first pressure sleeve in the installation and handling module moves downward to push the sealing rings on the pneumatic gripper downward into the annular groove. At the same time, the sealing rings disengage from the pneumatic gripper and are clamped in the annular groove by their own elastic properties. S5. The tooling transfer mechanism drives the crimping tooling to move below the output shaft transport mechanism, and the output shaft transport mechanism clamps the output shaft from the sealing ring mounting tooling to the crimping tooling. S6. The tooling transfer mechanism drives the crimping tooling carrying the output shaft to move to the bearing feeding mechanism of the corresponding model. The clamping block in the bearing feeding mechanism extends out and opens the two bearing positioning blocks on the crimping tooling to put them in the open state. S7. The bearing feeding mechanism outputs a bearing to a set position, and the bearing chuck in the bearing loading mechanism clamps the bearing at the set position and then places it in the bearing limiting groove on the pressing fixture to realize the loading and pre-positioning of the bearing. S8. The tooling transfer mechanism drives the pressing tooling to move below the bearing pressing mechanism. The third pressing sleeve in the bearing pressing mechanism first presses against the convex ring end face on the outer periphery of the output shaft to keep the position of the output shaft stable. Then, the second pressing sleeve in the bearing pressing mechanism presses against the bearing. As the second pressing sleeve continues to descend, the bearing is pressed into place to obtain the output shaft assembly. S9. The tooling transfer mechanism drives the crimping tooling carrying the output shaft assembly to move to below the output shaft transport mechanism. The output shaft transport mechanism clamps the output shaft assembly and then places it back into the carrier tray on the production line, which is then transported to the next assembly station along with the production line.

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