A rear swing arm bushing press system

Abstract

This utility model discloses a rear swing arm bushing pressing system, including a pressing machine, a main control box, and a robot and a feeder electrically connected to the main control box. The pressing machine includes a frame with a machine base, a large sleeve positioning seat and a small sleeve positioning seat on the machine base, a first receiving mechanism distributed adjacent to the large sleeve positioning seat, a first transferring mechanism distributed adjacent to the first receiving mechanism, a second receiving mechanism distributed adjacent to the small sleeve positioning seat, a second transferring mechanism disposed on one side of the small sleeve positioning seat, two pressing mechanisms corresponding to the large sleeve positioning seat and the small sleeve positioning seat, and a drive component connected to the pressing mechanism for driving the pressing mechanism to perform pressing. The feeder has a feeding channel corresponding to the first receiving mechanism and the second receiving mechanism. The robot can pick up the rear swing arm and fix the large sleeve and the small sleeve on the corresponding positioning seat. The transferring mechanism moves the bushing above the sleeve, and the pressing mechanism presses down to complete the bushing pressing. The system has a high degree of automation.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts press-fitting technology, specifically relating to a rear control arm bushing press-fitting system. Background Technology

[0002] In the automotive parts manufacturing industry, the rear control arm, as a key component of the suspension system, directly affects the vehicle's driving stability, comfort, and safety through the press-fitting quality of its bushings. Both the large and small sleeves of the rear control arm require corresponding bushings to be press-fitted to achieve the buffering and positioning functions of the connection point. This press-fitting process is a crucial step in the rear control arm production process.

[0003] Currently, the pressing of rear swing arm bushings mostly relies on manual labor or semi-automated equipment. Manual operation requires workers to manually fix the rear swing arm on the tooling table, pick up the bushing and align it with the sleeve position, and finally press it in place using a pressing tool. This method is not only labor-intensive and inefficient, but also susceptible to problems such as bushing misalignment and uneven pressing force due to human operating techniques and fatigue levels. This results in poor product quality consistency and makes it difficult to meet the demands of high-volume, high-precision production.

[0004] Even with semi-automated equipment, manual assistance is often required for steps such as feeding and positioning, resulting in a low level of automation. For example, bushing supply requires manual replenishment, and the picking, placing, and fixing of the rear control arm still relies on manual labor. There is a lack of coordination and linkage between equipment, leading to insufficient continuity in the overall production process. With the rapid development of the automotive manufacturing industry, higher demands are being placed on the efficiency, precision, and intelligence level of parts production. Traditional production methods are no longer sufficient to meet the integration needs of automated production lines. Therefore, designing a rear control arm bushing pressing system that can achieve automatic feeding, positioning, pressing, and material handling has become crucial for improving production efficiency and ensuring product quality. Utility Model Content

[0005] In view of the technical problems existing in the prior art, this utility model provides a rear swing arm bushing press-fitting system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rear control arm bushing press-fitting system, comprising:

[0008] A pressing machine includes a frame with a machine base, a large sleeve positioning seat and a small sleeve positioning seat arranged at intervals on the machine base, a first receiving mechanism distributed adjacent to the large sleeve positioning seat, a first transferring mechanism distributed adjacent to the first receiving mechanism, a second receiving mechanism distributed adjacent to the small sleeve positioning seat, a second transferring mechanism disposed on one side of the small sleeve positioning seat, two pressing mechanisms correspondingly disposed above the large sleeve positioning seat and the small sleeve positioning seat, and a drive assembly connected to the pressing mechanism for driving the pressing mechanism to perform pressing.

[0009] A feeding machine is distributed adjacent to the pressing machine, and the feeding machine has a feeding channel whose position corresponds one-to-one with the first receiving mechanism and the second receiving mechanism.

[0010] The main control box is electrically connected to the pressing machine and the feeding machine;

[0011] A robot, electrically connected to the main control box and configured to cooperate with the frame for picking up the rear swing arm, can cooperate with the large sleeve positioning seat to fix the large sleeve of the rear swing arm onto the large sleeve positioning seat. The first receiving mechanism is used to receive the large bushing supplied by the corresponding feeding channel, and the first transferring mechanism moves the large bushing at the first receiving mechanism to the top of the large sleeve. The driving component can drive the pressing mechanism to move towards the large sleeve positioning seat to press the large bushing into the large sleeve, or;

[0012] The robot can cooperate with the small sleeve positioning seat to fix the small sleeve of the rear swing arm on the small sleeve positioning seat. The second receiving mechanism is used to receive the small bushing supplied by the corresponding feeding channel, and the second transferring mechanism moves the small bushing at the second receiving mechanism to the top of the small sleeve. The driving component can drive the pressing mechanism to move closer to the small sleeve positioning seat to press the small bushing into the small sleeve.

[0013] Furthermore, the large sleeve positioning base includes a positioning base with an internal mounting cavity and detachably connected to the machine tool, a positioning drive unit installed in the mounting cavity, a positioning support platform located on the upper end of the positioning base and adapted to the end face of the large sleeve for supporting the large sleeve, and a positioning core installed in the inner cavity of the positioning support platform. The positioning drive unit is connected to the lower end of the positioning core and can drive the positioning core into / out of the inner cavity of the positioning support platform. When the positioning core extends out of the positioning support platform, it can cooperate with the robot to fix the large sleeve.

[0014] The small sleeve positioning seat has the same structure as the large sleeve positioning seat, and the size of the positioning platform in the small sleeve positioning seat is adapted to the small sleeve.

[0015] Furthermore, the first receiving mechanism includes two receiving components located on both sides of the large sleeve positioning seat. Each receiving component includes a lower base plate detachably connected to the machine tool, a first lifting drive unit disposed on the lower base plate, a plurality of lifting guide rods surrounding the first lifting drive unit, a moving plate connected to the upper end of the first lifting drive unit and capable of reciprocating up and down along the lifting guide rods, a first rotary drive unit installed at the lower end of the moving plate, a first rotary support cylinder installed at the upper end of the moving plate, a large bushing top material core installed in the first rotary support cylinder and connected to the first rotary drive unit, an upper base plate connected to the lifting guide rods and disposed at the upper end of the first rotary support cylinder, and a first receiving component whose inlet is adapted to the outlet of the feeder and disposed at the upper end of the upper base plate. The upper base plate is provided with a through cavity through which the large bushing top material core passes.

[0016] The first lifting drive unit can drive the moving plate to move up and down along the height direction of the lifting guide rod, so that the large bushing top core can move up and down within the through cavity;

[0017] The first rotary drive unit can drive the large bushing top core to rotate horizontally within the first rotary support cylinder, and the contact surface of the large bushing top core is adapted to the end face of the large bushing.

[0018] Furthermore, both the first and second material transfer mechanisms include a support plate detachably connected to the machine base, a first slide table mounted on the support plate, a first lifting seat slidably mounted on the first slide table, a second rotary drive unit mounted on the first lifting seat, a rotary seat connected to the upper end of the second rotary drive unit, a slide table cylinder disposed on the upper end of the rotary seat, and a first finger-gripping cylinder mounted on one end of the slide table cylinder. The first slide table can drive the first lifting seat to move up and down along the height direction of the support plate, and the slide table cylinder can drive the first finger-gripping cylinder to move horizontally reciprocating.

[0019] The first gripper cylinder has two first grippers, each of which has a semi-circular gripping groove. When the two first grippers are clamped and closed, the two gripping grooves can be combined to form a gripping cavity that is compatible with the outer diameter of the large bushing or the small bushing.

[0020] Furthermore, the second receiving mechanism includes a first bracket detachably connected to the machine base, a second slide table disposed on the first bracket, a second lifting seat slidably mounted on the second slide table, a third rotary drive unit disposed at the lower end of the second lifting seat, a second rotary support cylinder disposed at the upper end of the second lifting seat, a small bushing top core installed in the second rotary support cylinder and connected to the third rotary drive unit, a second bracket disposed on one side of the first bracket, a fourth rotary drive unit disposed at the upper end of the second bracket, a second finger-clamping cylinder connected to the fourth rotary drive unit, a third bracket disposed opposite to the second bracket, and a second receiving component disposed at the upper end of the third bracket with its feed port adapted to the discharge port of the feeder. The second slide table can drive the second lifting seat to move up and down along the height direction of the first bracket.

[0021] The two second grippers on the second gripper cylinder can form a U-shaped gripping position. The open end of the U-shaped gripping position is opposite to the discharge end of the second receiving component. When the small bushing is gripped by the U-shaped gripping position, the fourth rotary drive unit can drive the second gripper cylinder to rotate along its own axis.

[0022] Furthermore, the second support is provided with a cylinder on its side wall, and two support plates that can move closer or further apart are connected to the cylinder. When the two support plates come into contact with each other, they can form a support platform for supporting small bushings. The support platform can be used to receive small bushings output from the discharge end of the second receiving component.

[0023] Furthermore, both the second receiving component and the first receiving component are equipped with a visual imaging acquisition unit that is electrically connected to the main control box. The visual imaging acquisition unit is used to capture feature images of the large bushing or the small bushing, and outputs the real-time pose information of the workpiece after image processing, so as to realize non-contact detection and judgment of the workpiece positioning status.

[0024] Furthermore, the pressing mechanism includes a pressing base connected to the upper end of the frame and located above the machine platform, and two pressing assemblies mounted on the pressing base and arranged at intervals. Each pressing assembly includes a guide sleeve mounted on the pressing base, a pressing rod capable of reciprocating within the guide sleeve, a pressing part located at the lower end of the pressing rod, and a pressing head connected to the lower end of the pressing part via a universal connector. Each pressing rod has a connecting rod at its upper part, and each connecting rod is correspondingly connected to a second lifting drive unit mounted on the pressing base. The second lifting drive unit can drive the pressing rod downward, so that the pressing head contacts the workpiece at the corresponding position for pre-positioning.

[0025] Furthermore, the drive assembly includes two electric cylinders mounted on the top of the frame and arranged at intervals. The push rod of each electric cylinder can extend into the frame and is distributed above the two pressing rods. After the pressing head contacts the large bushing or the small bushing for pre-positioning, the push rod of the electric cylinder can drive the pressing rod to continue to penetrate closer to the rear swing arm to complete the bushing pressing.

[0026] Furthermore, the feeding channel is a plurality of direct vibration feeding and conveying channels, which can realize the continuous conveying of large or small bushings.

[0027] In summary, the beneficial effects of this utility model are as follows: 1. The system, through the coordinated linkage of the robot, main control box, and various mechanisms, constructs a complete automated closed loop of "rear swing arm loading—positioning—bulb feeding—adjustment—material transfer—pressing". From the robot continuously picking up the rear swing arm and cooperating with the positioning seat to achieve "internal and external clamping", to the continuous conveying of bushings by the direct vibration feeding channel, the automatic adjustment of bushing posture by the receiving mechanism, the precise transfer mechanism, and the completion of pre-positioning and final pressing by the pressing mechanism, no manual intervention is required throughout the entire process. This saves production time per process and avoids the fatigue and interruption of manual operation, adapting to the needs of mass production. 2. The system completely replaces repetitive labor such as rear swing arm picking, bushing handling, and alignment pressing by manual labor, reducing the labor intensity of workers; at the same time, the enclosed nature of the mechanical structure and automated operation reduce the contact between the human body and the moving parts of the equipment, avoiding safety risks such as squeezing and collision, and meeting modern safety production standards. 3. The guide sleeve of the pressing mechanism cooperates with the universal connector to achieve adaptive angle compensation of the pressing head. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a rear swing arm bushing press-fitting system provided by this utility model.

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure without the robot.

[0030] Figure 3 This is a three-dimensional structural diagram of the large sleeve positioning seat, the first receiving mechanism, and the first transferring mechanism in this utility model.

[0031] Figure 4 yes Figure 3 A structural diagram from another perspective.

[0032] Figure 5 yes Figure 3 Vertical sectional view of the central positioning pier.

[0033] Figure 6 This is a three-dimensional structural diagram of the large sleeve positioning seat, the second receiving mechanism, and the second transferring mechanism in this utility model.

[0034] Figure 7 yes Figure 6 A structural diagram from another perspective.

[0035] Figure 8 This is a three-dimensional structural diagram of the second receiving mechanism in this utility model.

[0036] In the diagram, 100-frame, 110-machine platform, 120-large sleeve positioning seat, 121-positioning base, 1210-feeding sensor, 1210-installation cavity, 122-positioning drive unit, 123-positioning support, 124-positioning core, 130-small sleeve positioning seat, 140-receiving assembly, 141-lower base plate, 142-first lifting drive unit, 143-lifting guide rod, 144-moving plate, 145-first Rotary support cylinder, 146-large bushing top core, 147-upper seat plate, 148-first receiving component, 150-first material transfer mechanism, 151-support plate, 152-first slide table, 153-first lifting seat, 154-second rotary drive unit, 156-rotary seat, 157-slide table cylinder, 158-first gripper cylinder, 1580-first gripper, 158A-clamping cavity, 160-second receiving mechanism, 160A-third bracket 160B - Second receiving component; 161 - First support; 162 - Second slide; 163 - Second lifting seat; 164 - Third rotary drive unit; 165 - Second rotary support cylinder; 166 - Small bushing top core; 167 - Second support; 1670 - Cylinder; 1671 - Support plate; 168 - Fourth rotary drive unit; 169 - Second gripper cylinder; 1690 - Second gripper; 200 - Feeder; 210 - Feeding channel 300-Main control box, 400-Robot, 500-Rear swing arm, 510-Large bushing, 520-Small bushing, 600-Vision imaging acquisition unit, 610-Vision camera, 620-Vision light source, 700-Pressure fitting mechanism, 710-Pressure fitting seat, 720-Pressure fitting assembly, 721-Guide sleeve, 722-Pressure fitting rod, 722A-Second lifting drive unit, 723-Pressure fitting part, 724-Pressure fitting head, 800-Electric cylinder. Detailed Implementation

[0037] The present invention will be further illustrated below with reference to specific figures.

[0038] The rear swing arm 500 to be pressed has two spaced-apart large sleeves on one side for pressing the large bushing 510, and a small sleeve on the other side for pressing the small bushing 520.

[0039] Please see Figure 1 and Figure 2This utility model provides a rear swing arm bushing pressing system, including a pressing machine, a main control box 300 electrically connected to the pressing machine, and a robot 400 and a feeder 200 electrically connected to the main control box 300. The pressing machine includes a frame 100 with a machine base 110, a large sleeve positioning seat 120 and a small sleeve positioning seat 130 arranged at intervals on the machine base 110, a first receiving mechanism distributed adjacent to the large sleeve positioning seat 120, a first transferring mechanism 150 distributed adjacent to the first receiving mechanism, a second receiving mechanism 160 distributed adjacent to the small sleeve positioning seat 130, a second transferring mechanism disposed on one side of the small sleeve positioning seat 130, two pressing mechanisms 700 correspondingly disposed above the large sleeve positioning seat 120 and the small sleeve positioning seat 130, and a drive assembly connected to the pressing mechanisms 700 for driving the pressing mechanisms 700 to perform pressing. The feeder 200 is located adjacent to the press machine. The feeder 200 has a feed channel 210 whose position corresponds one-to-one with the first receiving mechanism and the second receiving mechanism 160. The robot 400 is configured to cooperate with the frame 100 to pick up the rear swing arm 500. The robot 400 can cooperate with the large sleeve positioning seat 120 to fix the large sleeve of the rear swing arm 500 on the large sleeve positioning seat 120. The first receiving mechanism is used to receive the large bushing 510 supplied by the corresponding feed channel 210, and the first transferring mechanism 150 moves the large bushing 510 at the first receiving mechanism to the top of the large sleeve. The drive assembly can drive the press mechanism 700 to move towards the large sleeve positioning seat 120 to press the large bushing 510 into the large sleeve. Alternatively, the robot 400 can cooperate with the small sleeve positioning seat 130 to fix the small sleeve of the rear swing arm 500 onto the small sleeve positioning seat 130. The second receiving mechanism 160 is used to receive the small bushing 520 supplied by the corresponding feeding channel 210, and the small bushing 520 at the second receiving mechanism 160 is moved to the top of the small sleeve by the second transferring mechanism. The drive component can drive the pressing mechanism 700 to move towards the small sleeve positioning seat 130 to press the small bushing 520 into the small sleeve. Through the coordinated linkage of the robot 400, the feeder 200, the pressing machine and the main control box 300, the system realizes the full automation of the rear swing arm 500's picking and positioning, bushing feeding, transferring and pressing without manual intervention, which greatly improves the continuity of production. It solves the problems of high labor intensity and low efficiency in the processes of manually picking up the rear swing arm 500, manually placing the bushing, and aligning and pressing, and the production cycle of a single process is significantly shortened, which is suitable for the needs of mass production. The feeder 200 supplies large and small bushings 520 via a dedicated channel. The receiving mechanism and the transferring mechanism quickly connect, and the pressing mechanism 700 and the drive assembly precisely execute the pressing action. All modules are uniformly controlled through the main control box 300, reducing process waiting time and increasing output per unit time. From feeding by the rear swing arm 500 and bushing supply to the final pressing, the system forms a complete automated production closed loop, reducing reliance on manual skills and adapting to the unmanned requirements of modern production lines.

[0040] Please see Figure 3 and Figure 4 The large sleeve positioning seat 120 includes a positioning base 121 with an internal mounting cavity 1211 and bolted to the machine base 110; a positioning drive unit 122 installed in the mounting cavity 1211; a positioning support 123 located on the upper end of the positioning base 121 and adapted to the end face of the large sleeve for supporting the large sleeve; and a positioning core 124 installed in the inner cavity of the positioning support 123. The positioning drive unit 122 is preferably a cylinder. Please refer to [link to relevant documentation]. Figure 3 The positioning drive unit 122 is connected to the lower end of the positioning core 124 and can drive the positioning core 124 into / out of the inner cavity of the positioning support 123. When the positioning core 124 extends out of the positioning support 123, it can cooperate with the robot 400 to fix the large sleeve. The small sleeve positioning seat 130 has the same structure as the large sleeve positioning seat 120, and the size of the positioning support 123 in the small sleeve positioning seat 130 is adapted to the small sleeve. During the processing, the rear swing arm 500 is constantly picked up by the robot 400. The positioning base 121 is rigidly connected to the machine tool 110 by bolts, providing stable support for the overall positioning. A loading sensor 1210 is provided on one side of the positioning support 123 to detect whether the positioning support 123 is loaded. The end face of the positioning support 123 is adapted to the sleeve, which can pre-form initial bearing and limit of the sleeve of the rear swing arm 500 to avoid shaking during placement. For the design of the positioning drive unit 122 driving the positioning core 124 to extend and retract, please refer to [link to relevant documentation]. Figure 5 When the positioning core 124 extends from the positioning platform 123, it can be inserted into the sleeve to cooperate with the robot 400 to form an "internal and external clamping". The robot 400 clamps the rear swing arm 500 from the outside, and the positioning core 124 performs radial positioning of the sleeve from the inside. The two work together to firmly fix the sleeve on the positioning seat, ensuring the coaxiality of the sleeve and bushing during pressing, avoiding problems such as bushing skewing and abnormal pressing force caused by positioning offset, and greatly improving the stability of pressing accuracy. The small sleeve positioning seat 130 and the large sleeve positioning seat 120 adopt the same structure, and only the size of the positioning platform 123 is used to adapt to different sleeves. The modular design not only reduces the manufacturing cost and maintenance difficulty of the equipment, but also coordinates the movement of the positioning drive unit 122 and the robot 400 through the main control box 300, so that the positioning process of large and small sleeves is consistent, which facilitates the standardized management of the production line.

[0041] Please continue reading. Figure 3 and Figure 4Above both the first and second receiving mechanisms 160, a vision imaging acquisition unit 600 electrically connected to the main control box 300 is provided. The vision imaging acquisition unit 600 includes a vision camera 610 and a vision light source 620. The vision imaging acquisition unit 600 is used to capture feature images of the large bushing 510 or the small bushing 520, and outputs the real-time pose information of the workpiece after image processing, realizing non-contact detection and judgment of the workpiece's positioning status. Because the large and small bushings 520 may experience slight positional shifts or tilts due to vibration, friction, and other factors during feeding and receiving, these subtle changes are difficult to capture in real time by manual inspection. The vision camera 610, in conjunction with the vision light source 620, can clearly identify features such as the bushing's edges and holes, detecting the actual position and angle of the bushing.

[0042] The first receiving mechanism includes two receiving assemblies 140 located on both sides of the large sleeve positioning seat 120. Each receiving assembly 140 includes a lower base plate 141 detachably bolted to the machine base 110, a first lifting drive unit 142 mounted on the lower base plate 141, and several lifting guide rods 143 surrounding the first lifting drive unit 142. A movable plate 144 is connected to the upper end of the first lifting drive unit 142 and can reciprocate up and down along the lifting guide rods 143. The system comprises a first rotary drive unit at the lower end, a first rotary support cylinder 145 mounted on the upper end of the moving plate 144, a large bushing top material core 146 mounted inside the first rotary support cylinder 145 and connected to the first rotary drive unit, an upper seat plate 147 connected to the lifting guide rod 143 and located on the upper end of the first rotary support cylinder 145, and a first receiving component 148 whose inlet is adapted to the outlet of the feeder 200 and located on the upper end of the upper seat plate 147. The upper seat plate 147 has a through cavity through which the large bushing top material core 146 passes. The first lifting drive unit 142 is preferably a cylinder or a hydraulic cylinder. The first lifting drive unit 142 can drive the moving plate 144 to move up and down along the height direction of the lifting guide rod 143, so that the large bushing top material core 146 can move up and down within the through cavity. The first rotary drive unit can drive the large bushing top core 146 to rotate horizontally within the first rotary support cylinder 145, and the contact surface of the large bushing top core 146 is adapted to the end face of the large bushing 510. Before the large bushing 510 enters the first receiving member 148, the large bushing top core 146, driven by the moving plate 144, can move away from the interior of the first receiving member 148 to avoid interfering with receiving materials. When the large bushing 510 enters the first receiving member 148, the first lifting drive unit 142 drives the moving plate 144 upward, and the large bushing top core 146 passes through the through cavity into the first receiving member 148, where it can connect with the large bushing 510 and lift the large bushing 510 to separate it from the first receiving member 148. If the visual imaging acquisition unit 600 detects that the angle of the large bushing 510 is inaccurate, the first rotary drive unit can drive the large bushing top core 146 to rotate horizontally to adjust the angle of the large bushing 510. The first rotary drive unit is preferably a motor. The first lifting drive unit 142 (pneumatic / hydraulic cylinder), in conjunction with the lifting guide rod 143, can drive the moving plate 144 to rise and fall smoothly along a fixed trajectory. This ensures that the lifting action of the large bushing top core 146 within the through cavity is precise and controllable. It can completely avoid obstacles during material receiving and precisely lift the large bushing 510 to a height separating it from the receiving part during material ejection, reserving appropriate space for the material transfer mechanism to pick up the material and reducing positional errors between processes. When the visual imaging acquisition unit 600 detects that the angle of the large bushing 510 is inaccurate, the first rotary drive unit (motor) can drive the large bushing top core 146 to rotate horizontally, directly adjusting the angle of the large bushing 510 to the preset standard.The first receiving mechanism can dynamically correct the angle, greatly improving the posture accuracy of the large bushing 510 and ensuring the coaxiality of the subsequent pressing process.

[0043] After the large bushing 510 is lifted, it is transferred to the top of the large sleeve to be pressed by the first material transfer mechanism 150. The first material transfer mechanism 150 and the second material transfer mechanism both include a support plate 151 bolted to the machine base 110, a first slide 152 (electric slide) mounted on the support plate 151, a first lifting seat 153 slidably mounted on the first slide 152 and in an L-shaped structure, a second rotary drive unit 154 mounted on the first lifting seat 153, a rotary seat 156 connected to the upper end of the second rotary drive unit 154, a slide cylinder 157 located on the upper end of the rotary seat 156, and a first finger-clamping cylinder 158 mounted on one end of the slide cylinder 157. The first slide 152 can drive the first lifting seat 153 to move up and down along the height direction of the support plate 151, and the slide cylinder 157 can drive the first finger-clamping cylinder 158 to move horizontally back and forth. The first gripper cylinder 158 has two first grippers 1580, each of which has a semi-circular gripping groove. When the two first grippers 1580 are clamped and closed, the two gripping grooves can be combined to form a gripping cavity 158A that is compatible with the outer diameter of the large bushing 510 or the small bushing 520. After the large bushing 510 is lifted and its angle is corrected by the top core 146 of the first receiving mechanism, the first transferring mechanism 150 is in a standby state. The first slide table 152 drives the first lifting seat 153 to its initial height. The slide table cylinder 157 drives the first gripper cylinder 158 to a position close to the receiving mechanism. The two first grippers 1580 of the first gripper cylinder 158 are in an open state. The slide table cylinder 157 drives the first gripper cylinder 158 to move horizontally to both sides of the large bushing 510. The two first grippers 1580 close under the drive of the first gripper cylinder 158, and their semi-circular clamping grooves combine to form a clamping cavity 158A that matches the outer diameter of the large bushing 510, firmly clamping the large bushing 510. The second rotary drive unit 154 is preferably a motor. The second rotary drive unit 154 rotates and transfers the large bushing 510 to the positioning support 123, and then the first slide table 152 drives the first lifting seat 153 to descend and contact the large sleeve. Please refer to Figure 6 and Figure 7 The first and second material transfer mechanisms have the same structure, and the aforementioned material transfer action can also be used to transfer the small bushing 520. Automated material transfer replaces manual handling and alignment operations, reducing the intensity of manual labor.

[0044] Please see Figure 8The second receiving mechanism 160 includes a first bracket 161 bolted to the machine base 110, a second slide 162 (electric slide) mounted on the first bracket 161, a second lifting seat 163 slidably mounted on the second slide 162 and in an L-shaped structure, a third rotary drive unit 164 located at the lower end of the second lifting seat 163, a second rotary support cylinder 165 located at the upper end of the second lifting seat 163, and a small bushing installed inside the second rotary support cylinder 165 and connected to the third rotary drive unit 164. The system comprises a top feed core 166, a second support 167 located on one side of the first support 161, a fourth rotary drive unit 168 located on the upper end of the second support 167, a second gripping cylinder 169 connected to the fourth rotary drive unit 168, a third support 160A located opposite the second support 167, and a second receiving component 160B located on the upper end of the third support 160A with its feed port adapted to the discharge port of the feeder 200. The third rotary drive unit 164 and the fourth rotary drive unit 168 are preferably motors. The second slide 162 can drive the second lifting seat 163 to move up and down along the height direction of the first support 161. The two second grippers 1690 on the second gripping cylinder 169 can form a U-shaped gripping position, with the open end of the U-shaped gripping position opposite to the discharge end of the second receiving component 160B. After the small bushing 520 is clamped by the U-shaped clamping position, the fourth rotary drive unit 168 can drive the second gripping finger cylinder 169 to rotate along its own axis. The second bracket 167 has a cylinder 1670 on its side wall, and two support plates 1671 connected to the cylinder 1670 that can move closer or further apart. When the two support plates 1671 abut against each other, they form a support platform for supporting the small bushing 520. This support platform can receive the small bushing 520 output from the discharge end of the second receiving member 160B. When the two second grippers 1690 clamp the incoming material of the small bushing 520, the two support plates 1671 first join together to support the small bushing 520. After the small bushing 520 is supported by the support platform, the top core 166 of the small bushing is located below the support platform. After the two support plates 1671 separate from each other, the second slide 162 drives the second lifting seat 163 to move upward and contact the small bushing 520. If the visual imaging acquisition unit 600 detects that the angle of the small bushing 520 is inaccurate, the position can be adjusted by rotating the top core 166 of the small bushing through the third rotary drive unit 164 installed at the lower end of the second lifting seat 163. The second lifting seat 163 continues to move upward and can also lift the small bushing 520 to cooperate with the clamping of the corresponding second material transfer mechanism to perform material transfer operation. Furthermore, by driving the second finger-clamping cylinder 169 to rotate 180° through the fourth rotary drive unit 168, the orientation of the small bushing 520 can be precisely adjusted to ensure the correct posture during pressing and avoid assembly failure or product functional defects caused by incorrect orientation.

[0045] The pressing mechanism 700 includes a pressing base 710 connected to the upper end of the frame 100 and located above the machine base 110, and two pressing assemblies 720 mounted on the pressing base 710 and arranged at intervals. Each pressing assembly 720 includes a guide sleeve 721 mounted on the pressing base 710, a pressing rod 722 capable of reciprocating within the guide sleeve 721, a pressing part 723 located at the lower end of the pressing rod 722, and a pressing head 724 connected to the lower end of the pressing part 723 via a universal connector. Each pressing rod 722 has a connecting rod at its upper part, and each connecting rod is correspondingly connected to a second lifting drive unit 722A mounted on the pressing base 710. The second lifting drive unit 722A is preferably a motor. The second lifting drive unit 722A drives the pressing rod 722 downwards, causing the pressing head 724 to contact the workpiece at the corresponding position for pre-positioning. The second lifting drive unit 722A drives the pressing rod 722 to descend along the guide sleeve 721 via the connecting rod, so that the pressing head 724 contacts the workpiece to achieve pre-positioning. The guide sleeve 721 provides a stable movement trajectory for the pressing rod 722, preventing the pressing rod 722 from deviating during movement, and ensuring that the pressing head 724 can accurately align with the pressing center of the bushing and sleeve. This is used to eliminate minor alignment errors between the bushing and sleeve, laying a precise foundation for subsequent formal pressing and reducing problems such as pressing misalignment and bushing damage caused by inaccurate positioning.

[0046] When the pressing head 724 contacts the workpiece (bulb), if there is a slight angular deviation in the bushing or sleeve, the universal connector can compensate for the angle by its own flexible rotation, so that the pressing head 724 can adapt to the actual posture of the workpiece, ensuring that the pressing force is evenly applied to the bushing, effectively avoiding stress concentration caused by rigid contact, protecting the structural integrity of the bushing and sleeve, and ensuring the stability of the pressing quality.

[0047] Furthermore, the two spaced-apart pressing components 720 correspond to the large sleeve positioning seat 120 and the small sleeve positioning seat 130 respectively. During the pressing process, the robot 400 flips its rear swing arm 500 to complete the pressing operation of the two large bushings 510 in steps, and then moves the rear swing arm 500 to the small sleeve positioning seat 130 for fixation. Through the design of guiding positioning, universal compensation, and corresponding adaptation, the pressing mechanism 700 can not only achieve precise pressing of the bushings, but also protect the workpiece and improve efficiency.

[0048] The drive assembly includes two electric cylinders 800 mounted at the top of the frame 100 and arranged at intervals. The push rod of each electric cylinder 800 can extend into the frame 100 and is distributed above the two pressing rods 722. After the pressing head 724 contacts the large bushing 510 or the small bushing 520 for pre-positioning, the push rod of the electric cylinder 800 can drive the pressing rod 722 to continue to penetrate closer to the rear swing arm 500 to complete the bushing pressing. After pre-positioning, the pressing rod 722 is driven by the push rod of the electric cylinder 800 to complete the final pressing. During the pre-positioning stage, the pressing head 724 has already made precise contact with the bushing through the second lifting drive unit 722A. The electric cylinder 800 has a fast response speed and can start the pressing action immediately after the pre-positioning is completed, reducing the waiting time between processes.

[0049] The feeding channel 210 consists of several direct-vibration feeding conveyor channels, which enable continuous conveying of large bushings 510 or small bushings 520. The direct-vibration feeding conveyor channels use high-frequency vibration to cause the bushings to move directionally along the channel, achieving continuous feeding without manual intervention. This vibration conveying method allows the bushings to enter the receiving mechanism sequentially at a stable rhythm.

[0050] The working process of this pressing system is as follows: The feeding conveyor copper belt of the feeder 200 can convey the corresponding large bushing 510 into the first receiving part 148, while the small bushing 520 is conveyed into the second receiving part 160B. After the robot 400 picks up the bushing, the swing arm 500 places the large or small bushing to be pressed onto the positioning platform 123. The positioning drive unit 122 drives the positioning core 124 to extend from the positioning platform 123 and insert into the large or small bushing, cooperating with the robot 400 to firmly fix the large or small bushing. The visual imaging acquisition unit 600 can detect the angle and posture of the bushing. The first receiving mechanism and the second receiving mechanism 160 can adjust the posture or angle of the corresponding large bushing 510 or small bushing 520 through rotation and lifting actions. They can also lift the bushing with the corresponding top core to cooperate with the material transfer mechanism to transfer the material. The small bushing 520 can also be rotated and adjusted in orientation by the fourth rotation drive unit 168. The first and second material handling mechanisms 150 and 400 can move the corresponding bushings above the corresponding large or small sleeves through lifting, rotating, horizontal movement, and clamping actions. Then, the second lifting drive unit 722A drives the pressing rod 722 to approach the bushing and causes the pressing head 724 to be inserted into the bushing for pre-positioning. The electric cylinder 800 push rod in the electric cylinder 800 presses the top of the pressing rod 722, and the pressing head 724 completes the complete pressing of the bushing. After the two large sleeves complete the pressing of the bushings step by step, the robot 400 cooperates by flipping and moving to complete the pressing of the small bushing 520 into the small sleeve.

[0051] This pressing system: 1. Through the coordinated operation of the robot 400, main control box 300, and various mechanisms, the system constructs a complete automated closed loop of "rear swing arm 500 feeding—positioning—bulb feeding—adjustment—material transfer—pressing". From the robot 400 continuously picking up the rear swing arm 500 and cooperating with the positioning seat to achieve "internal and external clamping", to the continuous conveying of bushings by the direct vibration feeding channel 210, the automatic adjustment of bushing posture by the receiving mechanism, the precise transfer by the material transfer mechanism, and the completion of pre-positioning and final pressing by the pressing mechanism 700, the entire process requires no manual intervention. This saves production time per process and avoids the fatigue and interruption of manual operation, making it suitable for large-scale production needs. 2. The system completely replaces repetitive labor such as rear swing arm 500 picking, bushing handling, and alignment pressing by manual labor, reducing the labor intensity of workers; at the same time, the enclosed mechanical structure and automated operation reduce the contact between the human body and the moving parts of the equipment, avoiding safety risks such as squeezing and collision, and meeting modern safety production standards. Third, the guide sleeve 721 of the pressing mechanism 700 cooperates with the universal connector to realize the adaptive angle compensation of the pressing head 724.

[0052] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A rear swing arm bushing press-fitting system, characterized in that, include: A pressing machine includes a frame with a machine base, a large sleeve positioning seat and a small sleeve positioning seat arranged at intervals on the machine base, a first receiving mechanism distributed adjacent to the large sleeve positioning seat, a first transferring mechanism distributed adjacent to the first receiving mechanism, a second receiving mechanism distributed adjacent to the small sleeve positioning seat, a second transferring mechanism disposed on one side of the small sleeve positioning seat, two pressing mechanisms correspondingly disposed above the large sleeve positioning seat and the small sleeve positioning seat, and a drive assembly connected to the pressing mechanism for driving the pressing mechanism to perform pressing. A feeding machine is distributed adjacent to the pressing machine, and the feeding machine has a feeding channel whose position corresponds one-to-one with the first receiving mechanism and the second receiving mechanism. The main control box is electrically connected to the pressing machine and the feeding machine; A robot, electrically connected to the main control box and configured to cooperate with the frame for picking up the rear swing arm, can cooperate with the large sleeve positioning seat to fix the large sleeve of the rear swing arm onto the large sleeve positioning seat. The first receiving mechanism is used to receive the large bushing supplied by the corresponding feeding channel, and the first transferring mechanism moves the large bushing at the first receiving mechanism to the top of the large sleeve. The driving component can drive the pressing mechanism to move towards the large sleeve positioning seat to press the large bushing into the large sleeve, or; The robot can cooperate with the small sleeve positioning seat to fix the small sleeve of the rear swing arm on the small sleeve positioning seat. The second receiving mechanism is used to receive the small bushing supplied by the corresponding feeding channel, and the second transferring mechanism moves the small bushing at the second receiving mechanism to the top of the small sleeve. The driving component can drive the pressing mechanism to move closer to the small sleeve positioning seat to press the small bushing into the small sleeve.

2. The rear swing arm bushing press-fitting system according to claim 1, characterized in that: The large sleeve positioning base includes a positioning base with an internal mounting cavity and detachably connected to the machine tool, a positioning drive unit installed in the mounting cavity, a positioning support platform located on the upper end of the positioning base and adapted to the end face of the large sleeve for supporting the large sleeve, and a positioning core installed in the inner cavity of the positioning support platform. The positioning drive unit is connected to the lower end of the positioning core and can drive the positioning core into / out of the inner cavity of the positioning support platform. When the positioning core extends out of the positioning support platform, it can cooperate with the robot to fix the large sleeve. The small sleeve positioning seat has the same structure as the large sleeve positioning seat, and the size of the positioning platform in the small sleeve positioning seat is adapted to the small sleeve.

3. The rear swing arm bushing press-fitting system according to claim 1, characterized in that: The first receiving mechanism includes two receiving components located on both sides of the large sleeve positioning seat. Each receiving component includes a lower base plate detachably connected to the machine base, a first lifting drive unit disposed on the lower base plate, a plurality of lifting guide rods surrounding the first lifting drive unit, a moving plate connected to the upper end of the first lifting drive unit and capable of reciprocating up and down along the lifting guide rods, a first rotary drive unit installed at the lower end of the moving plate, a first rotary support cylinder installed at the upper end of the moving plate, a large bushing top material core installed in the first rotary support cylinder and connected to the first rotary drive unit, an upper base plate connected to the lifting guide rods and disposed at the upper end of the first rotary support cylinder, and a first receiving component whose inlet is adapted to the outlet of the feeder and disposed at the upper end of the upper base plate. The upper base plate is provided with a through cavity through which the large bushing top material core passes. The first lifting drive unit can drive the moving plate to move up and down along the height direction of the lifting guide rod, so that the large bushing top core can move up and down within the through cavity; The first rotary drive unit can drive the large bushing top core to rotate horizontally within the first rotary support cylinder, and the contact surface of the large bushing top core is adapted to the end face of the large bushing.

4. The rear swing arm bushing press-fitting system according to claim 3, characterized in that: Both the first material transfer mechanism and the second material transfer mechanism include a support plate detachably connected to the machine base, a first slide table mounted on the support plate, a first lifting seat slidably mounted on the first slide table, a second rotary drive unit mounted on the first lifting seat, a rotary seat connected to the upper end of the second rotary drive unit, a slide table cylinder located at the upper end of the rotary seat, and a first finger-gripping cylinder mounted at one end of the slide table cylinder. The first slide table can drive the first lifting seat to move up and down along the height direction of the support plate, and the slide table cylinder can drive the first finger-gripping cylinder to move horizontally reciprocating. The first gripper cylinder has two first grippers, each of which has a semi-circular gripping groove. When the two first grippers are clamped and closed, the two gripping grooves can be combined to form a gripping cavity that is compatible with the outer diameter of the large bushing or the small bushing.

5. The rear swing arm bushing press-fitting system according to claim 4, characterized in that: The second receiving mechanism includes a first bracket detachably connected to the machine base, a second slide table disposed on the first bracket, a second lifting seat slidably mounted on the second slide table, a third rotary drive unit disposed at the lower end of the second lifting seat, a second rotary support cylinder disposed at the upper end of the second lifting seat, a small bushing top core installed in the second rotary support cylinder and connected to the third rotary drive unit, a second bracket disposed on one side of the first bracket, a fourth rotary drive unit disposed at the upper end of the second bracket, a second finger-clamping cylinder connected to the fourth rotary drive unit, a third bracket disposed opposite to the second bracket, and a second receiving component disposed at the upper end of the third bracket with its feed port adapted to the discharge port of the feeder. The second slide table can drive the second lifting seat to move up and down along the height direction of the first bracket. The two second grippers on the second gripper cylinder can form a U-shaped gripping position. The open end of the U-shaped gripping position is opposite to the discharge end of the second receiving component. When the small bushing is gripped by the U-shaped gripping position, the fourth rotary drive unit can drive the second gripper cylinder to rotate along its own axis.

6. The rear swing arm bushing press-fitting system according to claim 5, characterized in that: The second support has a cylinder on its side wall, and two support plates that can move closer or further apart are connected to the cylinder. When the two support plates come into contact with each other, they can form a support platform for supporting small bushings. The support platform can be used to receive small bushings output from the discharge end of the second receiving component.

7. The rear swing arm bushing press-fitting system according to claim 5, characterized in that: Both the second receiving component and the first receiving component are equipped with a visual imaging acquisition unit that is electrically connected to the main control box. The visual imaging acquisition unit is used to capture feature images of the large bushing or the small bushing, and outputs the real-time pose information of the workpiece after image processing, so as to realize non-contact detection and judgment of the workpiece positioning status.

8. The rear swing arm bushing press-fitting system according to any one of claims 1-7, characterized in that: The pressing mechanism includes a pressing base connected to the upper end of the frame and located above the machine platform, and two pressing assemblies mounted on the pressing base and arranged at intervals. Each pressing assembly includes a guide sleeve mounted on the pressing base, a pressing rod capable of reciprocating within the guide sleeve, a pressing part located at the lower end of the pressing rod, and a pressing head connected to the lower end of the pressing part via a universal connector. Each pressing rod has a connecting rod at its upper part, and each connecting rod is correspondingly connected to a second lifting drive unit mounted on the pressing base. The second lifting drive unit can drive the pressing rod downward, so that the pressing head contacts the workpiece at the corresponding position for pre-positioning.

9. The rear swing arm bushing press-fitting system according to claim 8, characterized in that: The drive assembly includes two electric cylinders mounted at the top of the frame and arranged at intervals. The push rod of each electric cylinder can extend into the frame and is distributed above the two pressing rods. After the pressing head contacts the large bushing or the small bushing for pre-positioning, the push rod of the electric cylinder can drive the pressing rod to continue to penetrate deeper and approach the rear swing arm to complete the bushing pressing.

10. The rear swing arm bushing press-fitting system according to claim 9, characterized in that: The feeding channel consists of several direct vibration feeding and conveying channels, which can realize the continuous conveying of large or small bushings.

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