Graphite particle automatic positioning and assembling equipment for self-lubricating bearing

Abstract

The application discloses a graphite particle automatic positioning and assembling equipment for self-lubricating bearings and relates to the field of bearing assembling equipment.The equipment comprises an assembling table, a clamp, a plurality of assembling arms, a feeding mechanism and a push-in assembly.The clamp is installed on the assembling table and is adapted to fix the bearing and perform controlled rotation.The assembling arms are uniformly distributed in the circumferential direction around the rotation axis of the clamp, and each assembling arm is provided with a plurality of assembling openings and a corresponding push-in assembly.The assembling openings are adapted to perform vertical and radial adjustment to align the mounting holes on the bearing, and the push-in assembly is adapted to move in the radial direction to push the graphite particles from the assembling openings into the mounting holes.The feeding mechanism is one-to-one corresponding to the assembling arms and is adapted to fill the graphite particles into the corresponding assembling arms.During the assembling, the clamp intermittently rotates to drive the bearing to rotate synchronously, and the assembling openings are vertically and radially adjusted.During the intermittent period when the rotation of the clamp is stopped, the assembling openings are aligned with the mounting holes, and the push-in assembly moves in the radial direction to perform the assembling operation.

Description

Technical Field

[0001] This application relates to the field of bearing assembly equipment technology, and in particular discloses an automatic positioning and assembly equipment for graphite particles of a self-lubricating bearing. Background Technology

[0002] Self-lubricating bearings are important mechanical components that do not require external lubricants. They form a solid lubricating layer by embedding graphite particles in mounting holes on a metal substrate. They are widely used in various mechanical transmission fields. The assembly of graphite particles is a key process in bearing production. Its assembly efficiency and quality directly affect the manufacturing cost and self-lubricating performance of the product. Currently, in the production process of self-lubricating bearings, the assembly of graphite particles is usually carried out in a semi-automatic or manual manner.

[0003] Existing graphite particle assembly equipment typically employs a single-station or single-channel assembly mode. After the fixture fixes the bearing, a single assembly mechanism sequentially locates each mounting hole on the bearing and fills each hole with graphite particles. However, such equipment has the following shortcomings in practical applications: Firstly, the assembly efficiency is low. Since bearings usually have multiple mounting holes distributed circumferentially, existing equipment requires multiple intermittent rotations of the fixture and repeated alignment of the assembly mechanism, processing only one mounting hole at a time. This results in a long assembly cycle, making it difficult to meet the needs of large-scale mass production. Secondly, positioning and alignment are cumbersome. Because bearings have multiple mounting holes, and existing equipment processes only one mounting hole at a time, repositioning and alignment are required every time a mounting hole is changed. This reduces efficiency and increases the probability of deviation under frequent positioning and alignment, as well as increasing the fatigue wear of the entire system. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this application is to provide an automatic positioning and assembly device for graphite particles in a self-lubricating bearing.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an automatic positioning and assembly device for graphite particles in a self-lubricating bearing, comprising: an assembly table; a clamp, which is mounted on the assembly table and is adapted to fix the bearing and perform controlled rotation; assembly arms, which are provided in multiples and evenly distributed around the rotation axis of the clamp in a circumferential direction, each assembly arm being provided with several assembly ports and a corresponding push-in component, the assembly ports being adapted to be vertically and radially adjusted to align with the mounting holes on the bearing, the push-in component being adapted to move radially to push graphite particles from the assembly port into the mounting holes; and a feeding mechanism, which corresponds one-to-one with the assembly arms and is adapted to fill the corresponding assembly arm with graphite particles; during assembly, the clamp rotates intermittently, causing the bearing to rotate synchronously, the assembly ports are vertically and radially adjusted, and during the interval when the clamp stops rotating, the assembly ports are aligned with the mounting holes, while the push-in component moves radially to perform the assembly operation.

[0006] As a preferred embodiment, each of the assembly arms operates independently and is controlled by a control system, which is configured to selectively control any one of the assembly arms to perform an assembly operation, or to control several of the assembly arms to perform assembly operations synchronously in a preset grouping or real-time grouping manner, or to control all the assembly arms to perform assembly operations simultaneously.

[0007] As a preferred embodiment, the assembly arm includes a bracket, a first movable part, a second movable part, and several third movable parts. The bracket is vertically arranged, and the assembly port is mounted on the bracket and adapted to move vertically via the corresponding third movable part. The second movable part is connected to the bracket and is adapted to move the bracket vertically. The first movable part is connected to the second movable part and is adapted to move the bracket radially. During the assembly operation, the first movable part drives the bracket to move radially closer to and abut against the outer wall of the bearing. At the same time, the second movable part and the third movable parts move to align the assembly port with the corresponding mounting hole. After the assembly is completed, the bracket is reset.

[0008] Preferably, the pushing component is mounted on the bracket and is aligned radially with the corresponding assembly port; during feeding, the feeding mechanism fills the graphite particles between the assembly port and the pushing component; during assembly, the pushing component pushes the graphite particles out of the assembly port and into the mounting hole; after assembly, the pushing component resets and the feeding mechanism refills the graphite particles.

[0009] As a preferred embodiment, the push-in assembly includes a driver and a push rod. The driver is mounted on the bracket and fixed relative to the assembly port. The push rod is connected to the output end of the driver and is adapted to move linearly along its axial direction. When the assembly port is vertically adjusted, the push-in assembly moves synchronously. During assembly, the push rod extends and pushes the graphite particles through the assembly port to be installed into the mounting hole. After assembly is completed, the push rod retracts and resets.

[0010] As a preferred embodiment, the feeding mechanism includes a vibratory feeder, several feeding tracks, and several feeders. The vibratory feeder has several discharge ends, each corresponding to one of the feeding tracks. Each feeding track's discharge port is connected to a feeder, and the feeder's outlet corresponds to one of the push-in components. The vibratory feeder transports the graphite particles to the feeders via the feeding tracks. After the support is reset, the graphite particles fill the space between the assembly port and the push-in component through the feeder's outlet.

[0011] As a preferred embodiment, the clamp includes a turntable and a plurality of grippers. The turntable has a plurality of grooves evenly arranged around its axis of rotation in a circumferential direction. Each groove is arranged radially along the turntable. The grippers are mounted one-to-one on the grooves and are adapted to slide radially along the grooves. The grippers are configured to operate synchronously. When the bearing is placed on the turntable, each gripper slides synchronously radially along the groove until it abuts against the bearing, thereby fixing the bearing.

[0012] In a further preferred embodiment, a main motor is fixedly installed on the lower side of the assembly table, and the output shaft of the main motor is fixedly connected to the turntable. The main motor is controlled by a control system, which is configured to control the main motor to operate intermittently, thereby controlling the turntable to drive the bearing to rotate intermittently, so that each row of mounting holes on the bearing rotates sequentially to a position radially aligned with the corresponding assembly arm.

[0013] Further preferably, a pressure sensor is provided on the gripper, and the pressure sensor is configured to monitor the clamping force of the gripper on the bearing surface in real time.

[0014] As a preferred embodiment, the assembly arm is further provided with an alignment component, which is communicatively connected to the control system. The alignment component is configured to detect whether the assembly port is aligned with the corresponding mounting hole during the interval when the fixture stops rotating. When there is a deviation between the assembly port and the mounting hole, the alignment component feeds back an adjustment signal to the control system, and the control system controls the assembly port to adjust. When the assembly port is adjusted to be aligned with the corresponding mounting hole, the alignment component feeds back an alignment signal to the control system, and the control system controls the assembly port to stop moving.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] (1) This application sets up multiple assembly arms evenly distributed around the rotation axis of the fixture in the circumferential direction, and each assembly arm is provided with several assembly ports, realizing multi-station synchronous operation. During the intermittent rotation of the fixture, multiple assembly ports can be aligned with different mounting holes on the bearing at the same time, and multiple graphite particles can be pushed and assembled in parallel during the same interval. Compared with the single-station mode of aligning holes one by one and assembling one by one in the prior art, this application greatly reduces the number of start-stop times of fixture and assembly arm adjustment and the alignment waiting time, effectively compressing the assembly cycle of a single product, and is particularly suitable for the mass continuous production of bearings with multiple mounting holes distributed in the circumferential direction.

[0017] (2) In view of the shortcomings of the prior art that “repositioning and alignment must be performed every time a mounting hole is changed”, this application realizes mechanical collaborative positioning by setting the rotation axes of multiple assembly arms and fixtures to be evenly distributed in a concentric circle. During the intermittent rotation of the bearing driven by the fixture, the assembly ports on each assembly arm can be naturally aligned with the corresponding multiple mounting holes by vertical and radial adjustment. This avoids the repetitive actions caused by frequent realignment, which reduces the fatigue wear of the system and the probability of deviation caused by multiple positioning accumulation, thereby ensuring the consistency and stability of the assembly process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the working state (material loading position) of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the working state (assembly position) of the present invention.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamp of the present invention.

[0022] Figure 5This is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the overall three-dimensional structure of the assembly arm of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of each assembly port on the assembly arm of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the upper part of the assembly arm of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the assembly port and push-in component of the present invention.

[0027] In the diagram: 1. Assembly table; 2. Fixture; 21. Turntable; 211. Slide; 22. Gripper; 23. Pressure sensor; 3. Assembly arm; 31. Assembly port; 32. Push-in assembly; 321. Driver; 322. Push rod; 33. Support; 34. First moving part; 35. Second moving part; 36. Third moving part; 37. Alignment assembly; 4. Feeding mechanism; 41. Vibratory feeder; 42. Feeding track; 43. Feeder; 5. Bearing; 51. Mounting hole; 6. Graphite particles; 7. Main motor. Detailed Implementation

[0028] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0030] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0032] A preferred embodiment of this application, such as Figures 1 to 9 As shown, an automatic positioning and assembly device for graphite particles in a self-lubricating bearing includes:

[0033] Assembly table 1;

[0034] Fixture 2 is mounted on assembly table 1 and is adapted to fix bearing 5 and allow controlled rotation.

[0035] In this embodiment, specifically, such as Figure 4 As shown, the clamp 2 includes a turntable 21 and several grippers 22. Several grooves 211 are evenly arranged on the turntable 21 around its rotation axis in the circumferential direction. Each groove 211 is arranged radially along the turntable 21. The grippers 22 are installed one-to-one on the grooves 211 and are adapted to slide radially on the grooves 211. Each gripper 22 is configured to operate synchronously. When the bearing 5 is placed on the turntable 21, each gripper 22 slides synchronously radially along the grooves 211 until it abuts against the bearing 5, thereby fixing the bearing 5.

[0036] With the above specific settings, since each gripper 22 is configured to move radially synchronously, it can be ensured that when the bearing 5 is fixed, the center of the bearing 5 coincides with the rotation center of the turntable 21, with high centering accuracy, which is beneficial for the subsequent assembly of graphite particles 6; at the same time, this type of fixture 2 can adapt to various bearings 5 ​​of different sizes, and the pressure on the surface of the bearing 5 is relatively uniform, avoiding damage to the surface of the bearing 5.

[0037] In the specific configuration of each embodiment, the gripper 22 can be configured as an internal gripper or an external gripper. In this embodiment, for example... Figure 4 As shown, the grippers 22 are configured for internal clamping. Each gripper 22 moves outward to press against the inner wall of the bearing 5 to fix the bearing 5. Each gripper 22 moves inward to release the bearing 5, facilitating the transfer of the bearing 5 workpiece. Since fixing the bearing 5 requires the grippers 22 to apply a certain force to the bearing 5, this may cause some damage to the surface of the bearing 5. Therefore, in the actual production process, the grippers 22 can be covered with polyurethane or soft material. The specific settings can be adjusted by those skilled in the art according to the actual situation.

[0038] On automated production lines, to ensure that the gripper 22 applies appropriate force to the bearing 5—that is, to secure the bearing 5 while avoiding excessive clamping force that could deform the bearing 5—such as... Figure 4 As shown, a pressure sensor 23 can be installed on the gripper 22. The pressure sensor 23 is configured to monitor the clamping force of the gripper 22 on the surface of the bearing 5 in real time. In actual production, a reasonable clamping force can be preset by the control system. When the gripper 22 applies pressure to reach the preset clamping force, the movement of the gripper 22 can be stopped, thereby realizing automated operation.

[0039] Furthermore, for the synchronous operation of each gripper 22, the technical solution adopted in this embodiment is to drive them through the same driver. Specifically, the driver can be a motor, with a driving bevel gear fixedly installed at the output end of the motor. Each gripper 22 is mounted on a corresponding lead screw via a slider. Each lead screw has a driven bevel gear at its end that meshes with the driving bevel gear. With this configuration, when the motor is running, the driving bevel gear simultaneously drives each driven bevel gear to rotate, thereby causing each lead screw to rotate and driving each slider to move radially synchronously. Of course, in other embodiments, other structures can also be used, such as using a linkage mechanism to make each gripper 22 run synchronously, or each gripper 22 is equipped with a driver, and each driver is uniformly controlled by the control system to achieve synchronous operation, etc. The specific configuration can be set by those skilled in the art.

[0040] During assembly, the fixture 2 rotates intermittently, causing the bearing 5 to rotate synchronously. The assembly port 31 is adjusted vertically and radially. During the interval when the fixture 2 stops rotating, the assembly port 31 is aligned with the mounting hole 51, and the component 32 is pushed in and moved radially to perform the assembly operation.

[0041] In this embodiment, as Figures 2 to 3 As shown, a main motor 7 is fixedly installed on the lower side of the assembly table 1. The output shaft of the main motor 7 is fixedly connected to the turntable 21. The main motor 7 is controlled by the control system. The control system is configured to control the main motor 7 to run intermittently, thereby controlling the turntable 21 to drive the bearing 5 to rotate intermittently, so that each row of mounting holes 51 on the bearing 5 rotates in sequence to the position that is radially aligned with the corresponding assembly arm 3.

[0042] Assembly arm 3, such as Figures 1 to 3 As shown, there are multiple assembly arms 3, which are evenly distributed around the rotation axis of the clamp 2 in the circumferential direction. Each assembly arm 3 is provided with several assembly ports 31 and corresponding push-in components 32. The assembly ports 31 are suitable for vertical and radial adjustment to align with the mounting holes 51 on the bearing 5. The push-in components 32 are suitable for radial movement to push the graphite particles 6 from the assembly ports 31 into the mounting holes 51.

[0043] From the above configuration, it is clear that the turntable 21 is responsible for the rotation of the bearing 5, rotating the mounting holes 51 sequentially to the assembly station. The assembly arm 3 aligns with the mounting holes 51 through multi-directional adjustment and completes the assembly of the graphite particles 6. The cooperation between the two enables continuous assembly operations. The indexing motion of the turntable 21 controls the overall assembly cycle. At the same time, the assembly arm 3 needs to complete the assembly action under the precise control of the control system. The most important thing here is the control of precision. First, the rotational precision of the turntable 21 during indexing motion needs to ensure that the corresponding mounting holes 51 are in the assembly position and on the same radial plane as the corresponding assembly arm 3. Second, the adjustment precision of the assembly port 31 needs to ensure that the assembly port 31 moves to the position aligned with the corresponding mounting holes 51. Only in this way can the smooth assembly of the graphite particles 6 be guaranteed.

[0044] like Figure 9 As shown, the assembly arm 3 is also equipped with an alignment component 37. The alignment component 37 is communicatively connected to the control system. The alignment component 37 is configured to detect whether the assembly port 31 is aligned with the corresponding mounting hole 51 during the interval when the fixture 2 stops rotating. When there is a deviation between the assembly port 31 and the mounting hole 51, the alignment component 37 feeds back an adjustment signal to the control system, and the control system controls the assembly port 31 to adjust. When the assembly port 31 is adjusted to be aligned with the corresponding mounting hole 51, the alignment component 37 feeds back an alignment signal to the control system, and the control system controls the assembly port 31 to stop moving.

[0045] By real-time monitoring of the alignment component 37, the alignment accuracy between the assembly port 31 and the mounting hole 51 can be ensured. The alignment component 37 can be selected from, for example, a laser alignment sensor or a high-precision industrial camera.

[0046] To achieve higher precision control, multiple sensors or positioning structures can be installed throughout the device. Specifically, in some embodiments, an encoder can be installed on the turntable 21 to provide real-time feedback on the angle position, and a laser sensor can be installed on the assembly arm 3 to calibrate the position of the assembly port 31. In other embodiments, a high-precision industrial camera can be installed to work with the control system to align the assembly port 31 with the corresponding mounting hole 51. Of course, in other embodiments, the control system can also preset the parameters of the bearing 5, the assembly arm 3, etc., to achieve programmed assembly, and then ensure precision control through periodic testing and debugging. In actual production, the specific settings can be adjusted by those skilled in the art according to actual needs.

[0047] It is worth mentioning that, such as Figures 6 to 7As shown, the assembly arm 3 is provided with multiple assembly ports 31 to correspond to multiple mounting holes 51. This allows for the simultaneous assembly of graphite particles 6 onto multiple mounting holes 51. In addition, the assembly arm 3 is also provided with multiple ports and is evenly distributed around the rotation axis of the fixture 2 in the circumferential direction. This means that the assembly of graphite particles 6 onto more mounting holes 51 can be performed simultaneously. In the prior art, the assembly of all mounting holes 51 needs to be completed manually or through a single-station mechanism, which takes a lot of time. However, with the configuration of this embodiment, the assembly of multiple mounting holes 51 can be carried out in batches. For a bearing 5 workpiece, only a few assembly actions are needed to complete the assembly of graphite particles 6 onto all mounting holes 51, saving a lot of time and greatly improving production efficiency.

[0048] In addition, it should be noted that each assembly arm 3 operates independently and is controlled by the control system. The control system is configured to selectively control any assembly arm 3 to perform assembly operations, or to control several assembly arms 3 to perform assembly operations synchronously in a preset grouping mode or a real-time grouping mode, or to control all assembly arms 3 to perform assembly operations simultaneously.

[0049] The above configuration demonstrates the flexibility of the entire device, allowing for different controls based on different bearing specifications and overall production line cycle times; for example, in this embodiment, such as Figures 2 to 3 As shown, there are twelve rows of mounting holes 51 on the bearing 5 and six assembly arms 3. The number of assembly ports 31 on the assembly arms 3 is the same as the number of mounting holes 51 in each row. Therefore, in the actual production process, all assembly arms 3 can perform the assembly operation at the same time. After two assembly operations, the graphite particles 6 of all mounting holes 51 can be assembled. Of course, in some cases, in order to match the overall production line cycle and production line structure layout, the assembly arms 3 can be grouped. For example, three assembly arms 3 spaced apart can be grouped together, and only one group can be used for operation. The specific adjustments can be made by those skilled in the art according to the actual situation.

[0050] In this embodiment, specifically, as shown in... Figure 6 As shown, the assembly arm 3 includes a bracket 33, a first moving part 34, a second moving part 35, and several third moving parts 36. The bracket 33 is vertically arranged, and the assembly port 31 is mounted on the bracket 33 and adapted to move vertically through the corresponding third moving part 36. The second moving part 35 is connected to the bracket 33 and is adapted to make the bracket 33 move vertically. The first moving part 34 is connected to the second moving part 35 and is adapted to make the bracket 33 move radially. When performing the assembly operation, the first moving part 34 drives the bracket 33 to move radially closer and abut against the outer wall of the bearing 5. At the same time, the second moving part 35 and the third moving part 36 move to align the assembly port 31 with the corresponding mounting hole 51. After the assembly is completed, the bracket 33 is reset.

[0051] The specific structural configuration of the assembly arm 3 described above clearly shows that the radial adjustment of the first moving part 34 allows the entire support 33 to move closer to or further away from the bearing 5. Its movement is coordinated with the intermittent rotation frequency of the turntable 21. When the support 33 moves closer to the bearing 5, it performs the graphite particle 6 assembly operation. When the support 33 moves away from the bearing 5, it cooperates with the feeding mechanism 4 to fill the graphite particles 6. The vertical adjustment of the second moving part 35 allows the entire support 33 to be raised and lowered as a whole. Its functions are: firstly, to achieve coarse adjustment of the alignment between the assembly port 31 and the mounting hole 51; and secondly, when the bearing 5 is long and the number of mounting holes 51 in each row is greater than the number of assembly ports 31 on the support 33, the assembly operation of the support 33 can be covered by the overall raising and lowering. The vertical adjustment of the third moving part 36 allows each assembly port 31 to be raised and lowered individually for precise adjustment and alignment with the corresponding mounting hole 51. Through these three levels of adjustment, the alignment work before the assembly of the graphite particles 6 can be accurately achieved, improving the quality and efficiency of production.

[0052] In this embodiment, specifically, the first moving part 34 adopts the cooperation of an electric push rod or cylinder with a slider, the second moving part 35 adopts a lead screw slider mechanism, and the third moving part 36 adopts a gear and rack cooperation. In other embodiments, those skilled in the art can make specific structural settings according to the actual situation.

[0053] In addition, to prevent damage to the surface of the bearing 5 when the assembly arm 3 approaches the bearing 5, a protective pad can be set on the part of the assembly arm 3 that contacts the bearing 5 to achieve flexible contact.

[0054] The push-in component 32 is mounted on the bracket 33 and is aligned with the corresponding assembly port 31 on the same radial line. During feeding, the feeding mechanism 4 fills the graphite particles 6 between the assembly port 31 and the push-in component 32. During assembly, the push-in component 32 pushes the graphite particles 6 out of the assembly port 31 and into the mounting hole 51. After assembly is completed, the push-in component 32 is reset, and the feeding mechanism 4 fills the graphite particles 6 again.

[0055] As can be clearly seen from the above configuration, when the assembly port 31 is adjusted up and down, the push-in component 32 also moves synchronously, ensuring that the push rod 322 and the assembly port 31 are always on the same axis. As for the specific setting of the push-in component 32, in this embodiment, the push-in component 32 includes a driver 321 and a push rod 322. The driver 321 is mounted on the bracket 33 and is relatively fixed to the assembly port 31. The push rod 322 is connected to the output end of the driver 321 and is adapted to move linearly along its axial direction. When the assembly port 31 is adjusted vertically, the push-in component 32 moves synchronously. During assembly, the push rod 322 extends and pushes the graphite particles 6 through the assembly port 31 to be installed into the mounting hole 51. After the assembly is completed, the push rod 322 retracts and resets.

[0056] The driver 321 can be a servo motor, cylinder, electric cylinder, etc., and can be equipped with a pressure sensor 23 to detect the pushing force of the push rod 322 during assembly. When abnormal resistance occurs, it will stop and alarm in time to avoid damage to the workpiece and equipment. In addition, since the assembly is of graphite particles 6, graphite is a material that easily generates dust and is conductive. Therefore, anti-static measures need to be taken into account on the push-in component 32 and the assembly arm 3. A simple way is to apply an anti-static coating. The specific settings can be adjusted by those skilled in the art.

[0057] The assembly arm 3 can be directly installed on the assembly table 1, or a profile frame can be set on the assembly table 1 and the assembly arm 3 can be installed on the profile frame. This is simpler for the assembly table 1 and reduces the complexity of the layout. Of course, in some embodiments, the assembly arm 3 can be set up as an independent mechanism without physical connection to the assembly table 1, forming a modular setup. This is more advantageous for some large production lines, as it can be adjusted in a modular manner as needed, and can be replaced and repaired modularly in case of failure, which can greatly reduce costs.

[0058] The feeding mechanism 4 corresponds one-to-one with the assembly arm 3 (the attached figure only shows one feeding mechanism 4), which is suitable for filling the graphite particles 6 onto the corresponding assembly arm 3.

[0059] Specifically, such as Figure 5 As shown, the feeding mechanism 4 includes a vibratory feeder 41, several feeding tracks 42, and several feeders 43. The vibratory feeder 41 is provided with several discharge ends, which correspond one-to-one with the feeding tracks 42. Each feeding track 42 discharge port is connected to a feeder 43, and the outlet end of the feeder 43 corresponds one-to-one with the push-in component 32. The vibratory feeder 41 conveys the graphite particles 6 to the feeders 43 through the feeding tracks 42. After the support 33 is reset, the graphite particles 6 fill the space between the assembly port 31 and the push-in component 32 through the outlet end of the feeder 43.

[0060] The specific setup of the feeding device can refer to existing technologies, such as installing photoelectric sensors on it to cooperate with the control system to realize automatic sequential feeding, and alarms when there is a shortage of materials or other faults occur; in a specific embodiment, the number of vibratory feeders 41 can be set to correspond one-to-one with each assembly arm 3, or it can correspond to multiple assembly arms 3. By setting multiple branches at the discharge end of the vibratory feeder 41 to guide multiple assembly arms 3 respectively, one vibratory feeder 41 can feed multiple assembly arms 3.

[0061] It should also be noted that since this device is used for assembling graphite particles 6, as mentioned above, graphite is a material that easily generates dust and is conductive. Not only does the equipment need to be treated with anti-static measures, but a dust removal system also needs to be installed. Therefore, in practice, a dust removal system needs to be integrated into the entire device. For details, refer to the existing dust removal devices for graphite dust in the prior art.

[0062] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning and assembly device for graphite particles in a self-lubricating bearing, characterized in that, include: Assembly table; A fixture, which is mounted on an assembly table and is adapted to fix the bearing and allow controlled rotation; The assembly arm is provided in multiple ways and is evenly distributed around the rotation axis of the fixture in the circumferential direction. Each assembly arm is provided with several assembly ports and a push-in component corresponding to the assembly port. The assembly port is adapted to be vertically and radially adjusted to align with the mounting hole on the bearing. The push-in component is adapted to move radially to push graphite particles from the assembly port into the mounting hole. A feeding mechanism, which corresponds one-to-one with the assembly arm, is adapted to fill the graphite particles onto the corresponding assembly arm; During assembly, the fixture rotates intermittently, causing the bearing to rotate synchronously. The assembly port is adjusted vertically and radially. During the interval when the fixture stops rotating, the assembly port is aligned with the mounting hole, and the push-in component moves radially to perform the assembly operation. The assembly arm includes a bracket, a first moving part, a second moving part, and several third moving parts. The bracket is vertically arranged, and the assembly port is mounted on the bracket and adapted to move vertically via the corresponding third moving part. The second moving part is connected to the bracket and is adapted to move the bracket vertically. The first moving part is connected to the second moving part and is adapted to move the bracket radially. During the assembly operation, the first moving part drives the bracket to move radially closer to and abut against the outer wall of the bearing. At the same time, the second moving part and the third moving part move to align the assembly port with the corresponding mounting hole. After the assembly is completed, the bracket is reset.

2. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 1, characterized in that, Each assembly arm operates independently and is controlled by a control system, which is configured to selectively control any one of the assembly arms to perform an assembly operation, or to control several assembly arms to perform assembly operations synchronously in a preset grouping or real-time grouping manner, or to control all the assembly arms to perform assembly operations simultaneously.

3. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 1, characterized in that, The push-in component is mounted on the bracket and is aligned radially with the corresponding assembly port. During feeding, the feeding mechanism fills the graphite particles between the assembly port and the push-in component. During assembly, the push-in component pushes the graphite particles out of the assembly port and into the mounting hole. After assembly, the push-in component resets, and the feeding mechanism refills the graphite particles.

4. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 1, characterized in that, The push-in assembly includes a driver and a push rod. The driver is mounted on the bracket and fixed relative to the assembly port. The push rod is connected to the output end of the driver and is adapted to move linearly along its axial direction. When the assembly port is vertically adjusted, the push-in assembly moves synchronously. During assembly, the push rod extends and pushes the graphite particles through the assembly port to be installed into the mounting hole. After assembly is completed, the push rod retracts and resets.

5. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 1, characterized in that, The feeding mechanism includes a vibratory feeder, several feeding tracks, and several feeders. The vibratory feeder has several discharge ends, each corresponding to one of the feeding tracks. Each feeding track's discharge port is connected to a feeder, and the feeder's outlet corresponds to one of the push-in components. The vibratory feeder transports the graphite particles to the feeders via the feeding tracks. After the support is reset, the graphite particles fill the space between the assembly port and the push-in component through the feeder's outlet.

6. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 1, characterized in that, The clamp includes a turntable and several grippers. The turntable has several grooves evenly arranged around its axis of rotation in a circumferential direction. Each groove is arranged radially along the turntable. The grippers are installed one-to-one on the grooves and are adapted to slide radially on the grooves. The grippers are configured to operate synchronously. When the bearing is placed on the turntable, each gripper slides radially synchronously along the groove until it abuts against the bearing, thereby fixing the bearing.

7. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 6, characterized in that, A main motor is fixedly installed on the underside of the assembly table. The output shaft of the main motor is fixedly connected to the turntable. The main motor is controlled by a control system, which is configured to control the main motor to run intermittently, thereby controlling the turntable to drive the bearing to rotate intermittently, so that each row of mounting holes on the bearing rotates sequentially to a position radially aligned with the corresponding assembly arm.

8. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 6, characterized in that, The gripper is equipped with a pressure sensor, which is configured to monitor the clamping force of the gripper on the bearing surface in real time.

9. The automatic positioning and assembly equipment for graphite particles in a self-lubricating bearing as described in claim 2, characterized in that, The assembly arm is also equipped with an alignment component, which is communicatively connected to the control system. The alignment component is configured to detect whether the assembly port is aligned with the corresponding mounting hole during the interval when the fixture stops rotating. When there is a deviation between the assembly port and the mounting hole, the alignment component feeds back an adjustment signal to the control system, and the control system controls the assembly port to adjust. When the assembly port is adjusted to be aligned with the corresponding mounting hole, the alignment component feeds back an alignment signal to the control system, and the control system controls the assembly port to stop moving.

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