Automatic assembling equipment for automobile upper swing arm

Abstract

The invention relates to automobile swing arm assembly, in particular to automobile upper swing arm automatic assembly equipment which comprises a hydraulic machine with a limiting jig and a sliding frame, a swing arm with an arm ring and a lining, a guide head is arranged on the sliding frame, a guide rod is coaxially connected to the limiting jig in a clamped mode, a flexible head is arranged at the first end of the guide rod, and the flexible head is arranged at the second end of the guide rod. The guide rod is pressed downwards along with the sliding frame to be clamped in the guide head, and the flexible head drives the lining to be attached to the guide head. The lining is clamped to the guide head through the guide rod, the lining is fixed, the lining can be kept to be tightly attached to the guide head, no gap exists between the lining and the guide head, after the lining is fixed, the swing arm is placed on the limiting jig, the two arm rings of the swing arm are limited, the two arm rings are made to be in the coaxial state, and at the moment, the guide head is driven to press the arm rings, so that the lining is fixed. As the bushing is tightly attached to the guide head, the bushing can be prevented from inclining at the initial stage of pressing, and deformation of the outer ring of the bushing is reduced.

Description

Technical Field

[0001] This invention relates to radiator processing technology, specifically to an automatic assembly equipment for automotive upper control arms. Background Technology

[0002] As is well known, the control arm, also known as the control arm, is the core of the car's suspension system. It consists of an upper control arm and a lower control arm, which work together to provide cushioning. Bushings are installed at the connection between the car's control arm and the chassis to achieve a flexible connection.

[0003] For example, the invention patent with publication number CN120551744B, publication date October 31, 2025, entitled "A Swing Arm Bushing Press-Out Device," includes a fixing device and a pressing device. The fixing device can fix the base and the first arm body. The pressing device includes a pressing head structure and a first driving assembly. The pressing head structure includes a pressing head, which is disposed between the first arm ring and the second arm ring and faces the second arm ring. The pressing head can abut against the end of the outer ring body facing the pressing head. The bushing unit extends along a first direction, and the pressing head extends along a second direction. The second direction is deflected horizontally towards the base relative to the first direction. The first driving assembly can drive the pressing head to move along the second direction and push the bushing unit out of the second arm ring. This solves the problems of the swing arm bushing being difficult to disassemble, easily damaging the swing arm, and having low efficiency.

[0004] The shortcoming of the existing technology is that, during the manufacturing of the swing arm, the final assembly step is to press the bushing into the arm ring of the swing arm. The inner and outer layers of the bushing are both metal rings. The outer metal ring and the arm ring are fixed by interference fit using hydraulic equipment. However, the interference fit is mostly a one-time hydraulic assembly. The pressure point of the interference fit is the outer metal ring. In the initial stage of interference fit, if the hydraulic end and the outer metal ring are not kept in tight contact, it is easy to cause the outer metal ring to tilt. Although the subsequent interference fit will guide the outer metal ring back to its position, one end of the outer metal ring will deform due to tilting, which will increase the risk of cracking after long-term use. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic assembly device for automotive upper swing arms to overcome the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic assembly device for an automotive upper swing arm, comprising a hydraulic press having a limiting fixture and a sliding frame, a swing arm having an arm ring and a bushing, a guide head being provided on the sliding frame, a guide rod being coaxially engaged on the limiting fixture, a flexible head being provided at the first end of the guide rod, the guide rod being engaged in the guide head as the sliding frame is pressed down, and the flexible head causing the bushing to fit against the guide head.

[0007] As a further description of the above technical solution: the limiting fixture includes an outer frame, and coaxial limiting grooves and movable arc blocks are respectively provided at both ends of the outer frame. The limiting grooves and the arc blocks respectively limit the two arm rings of the swing arm.

[0008] As a further description of the above technical solution: a limiting rod is provided on the side wall of the outer frame, and the limiting rod fits against the swing arm.

[0009] As a further description of the above technical solution: the flexible head is provided with a spherical docking groove, and the limiting fixture is provided with a spherical connector, which retains the guide rod when the guide rod is not engaged by the guide head.

[0010] As a further description of the above technical solution: the guide head includes a connecting block and a rotating block, the second end of the guide rod is provided with an annular groove, and the rotating block is provided with elastic parts arranged in a circumferential array to limit the annular groove.

[0011] As a further description of the above technical solution: the connecting block has a through groove for the elastic part to pass through, and rounded corners are formed on both sides of the through groove, and the elastic part disengages from the annular groove along with the rounded corners.

[0012] As a further description of the above technical solution: the outer frame sidewall is provided with an inclined groove, a fixing sleeve is slidably connected to the inclined groove, and the limiting rod is threadedly connected to the fixing sleeve.

[0013] As a further description of the above technical solution: the limiting fixture is slidably connected to a sliding column for supporting the spherical joint, and the sliding column slides and fixes the guide rod as the sliding frame is pressed down.

[0014] As a further description of the above technical solution: the bushing includes an outer ring, a flexible interlayer, and an inner ring, wherein the outer ring corresponds to the end of the connecting block.

[0015] In the above technical solution, the automatic assembly equipment for automotive upper control arms provided by the present invention has the following beneficial effects: the bushing is fixed by being snapped onto the guide head by the guide rod, and the bushing is kept in close contact with the guide head without any gaps. After fixing, the control arm is placed on the limiting fixture, and the two arm rings of the control arm are restricted to make the two arm rings coaxial. At this time, the guide head is driven to press against the arm rings. Because the bushing is close to the guide head, the bushing can be prevented from tilting in the early stage of pressing, and the deformation of the outer ring of the bushing can be reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the limiting fixture and guide head provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the limiting fixture structure provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic cross-sectional view provided for an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 7 This is an exploded view of the restraint fixture structure provided in an embodiment of the present invention;

[0024] Figure 8 This is an exploded view of the guide head structure provided in an embodiment of the present invention;

[0025] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0026] Figure 10 This is a schematic diagram of the guide head removal section provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Hydraulic press; 10. Hydraulic cylinder; 11. Base plate; 12. Sliding frame; 2. Restricting fixture; 21. Outer frame; 211. Restricting groove; 22. Arc block; 23. Restricting rod; 231. Fixing threaded sleeve; 232. Inclined groove; 3. Guide head; 31. Guide rod; 311. Flexible head; 312. Spherical mating groove; 313. Ring groove; 32. Connecting block; 321. Through groove; 33. Rotating block; 331. Elastic part; 4. Swing arm; 41. Arm ring; 5. Lubrication assembly; 50. Oil tank; 51. Fixing frame; 511. Square sliding column; 52. Rotating column; 521. Ball nut; 53. Sliding column; 531. Return spring; 532. Spherical mating joint; 55. Oil supply pipe; 551. Spiral oil pipe; 6. Bushing; 61. Outer ring; 62. Inner ring; 63. Flexible interlayer. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Please see Figures 1-10 This invention provides a technical solution: an automatic assembly device for automotive upper control arms, such as... Figures 1-3 As shown, the hydraulic press 1 includes a limiting fixture 2 and a sliding frame 12, a swing arm 4 with an arm ring 41, and a bushing 6. The hydraulic press 1 includes a base plate 11, on which slide rods are arranged diagonally. The sliding frame 12 is slidably connected to the slide rods. A hydraulic cylinder 10 for driving the sliding frame 12 is provided at the top of the slide rods. A guide head 3 is provided on the sliding frame 12. A limiting groove 211 is opened on the limiting fixture 211, and a guide rod 31 is engaged in the limiting groove 211. The first end of the guide rod 31 (with...) Figure 5 For reference, the first end (lower end) is provided with a flexible head 311, which is engaged in the limiting groove 211. During press fitting, the flexible head 311 of the guide rod 31 is first engaged with the limiting groove 211, and then the bushing 6 is passed through the limiting groove 211. At this time, because the diameter of the flexible head 311 is larger than that of the bushing 6, it will restrict the bushing 6 when deformed. Then, the hydraulic cylinder 10 drives the sliding frame 12 to move down, and the guide head 311 will first contact the bushing 6 to push it, overcoming the flexible head 311. The guide head 311 deforms the bushing 6, and finally the guide rod 31 is snapped onto the guide head 3 to fix the bushing 6. This ensures that the bushing 6 is tightly attached to the guide head 3 without any gaps between them. After fixing, the swing arm 4 is placed on the limiting fixture 2 to restrict the two arm rings 41 of the swing arm 4, so that the two arm rings 41 are in a coaxial state. At this time, the guide head 3 is driven to press against the arm rings 41. Because the bushing 6 is tightly attached to the guide head 3, it can prevent the bushing 6 from tilting in the early stage of pressing and reduce the deformation of the outer ring 61 of the bushing 6.

[0031] Furthermore, such as Figure 5As shown, the bushing 6 includes an outer ring 61, a flexible interlayer 63, and an inner ring 62. The outer ring 61 and the connecting block 32 are aligned at their ends to maintain stability during press-fitting.

[0032] In another embodiment provided by the present invention, such as Figure 2 and Figure 3 As shown, the limiting fixture 2 includes an outer frame 21. A limiting groove 211 is provided on the top of the outer frame 21, and a chamfer is provided on the limiting groove 211. The limiting groove 211 is used to limit the arm ring 41 of the swing arm 4. A crossbar is provided at the bottom of the outer frame 21. The crossbar is connected to an arc block 22 through an elastic element. The arc block 22 can move with the elasticity of the elastic element. The arc block 22 and the limiting groove 211 are coaxially arranged. When installing the swing arm 4, the arm ring 41 that needs to be installed with the bushing 6 is first placed into the limiting groove 211. Then, with the limiting groove 211 as the center, the other arm ring 41 of the swing arm 4 is pushed towards the arc block 22, so that the elastic element is compressed and the arc block 22 is inserted into the arm ring 41 to complete the fixation of the swing arm 4.

[0033] The elastic element on the arc block 22 can be a spring.

[0034] In another embodiment provided by the present invention, such as Figure 3 and Figure 7 As shown, a limiting rod 23 is provided on the side wall of the outer frame 21. The limiting rod 23 fits against the swing arm 4. After the two ends of the swing arm 4 are fixed to the limiting groove 211 and the arc block 22 respectively, the swing arm 4 can still be rotated. When rotating, the limiting rod 23 fits against the swing arm 4, limiting the orientation of the swing arm 4, so that the arc at the connection between the swing arm 4 and the arm ring 41 does not contact the limiting groove 211, ensuring that the arm ring 41 of the bushing 6 to be installed will not be in an inclined position. The side wall of the outer frame 21 has an inclined groove 232. A fixing screw sleeve 231 is slidably connected to the inclined groove 232. A nut is threadedly connected to the fixing screw sleeve 231. Rotating the nut locks the fixing screw sleeve 231. The limiting rod 23 is threadedly connected to the fixing screw sleeve 231 and can be adjusted according to the side shape of the swing arm 4 to adapt to different swing arms 4.

[0035] In another embodiment provided by the present invention, such as Figure 5 and Figure 6 As shown, the flexible head 311 has a spherical mating groove 312, and the limiting fixture 2 has a spherical mating connector 532. The spherical mating connector 532 and the spherical mating groove 312 can be engaged. After the bushing 6 is pressed and fitted once, the sliding frame 12 lifts up and carries the guide rod 31 away from the bushing 6. Then the pressed and fitted swing arm 4 is removed, and then the sliding frame 12 moves down to embed the spherical mating connector 532 into the spherical mating groove 312 for fixation. The guide head 3 releases the restriction on the guide rod 31 and restricts the guide rod 31 on the spherical mating connector 532 for bushing 6 installation.

[0036] Preferably, the limiting fixture 2 is slidably connected to a sliding post 53 for supporting the spherical connector 532. A return spring 531 is provided at the bottom of the sliding post 53. When the sliding frame 12 moves down and the spherical connector 532 is embedded into the spherical mating groove 312 for fixing, as the spherical connector 532 is embedded into the spherical mating groove 312, the pressure overcomes the value of the return spring 531, and the sliding post 53 slides down with the sliding frame 12, so as to avoid damage to the spherical mating groove 312 and the spherical connector 532 due to excessive pressure.

[0037] In another embodiment provided by the present invention, such as Figure 5 , Figure 8 and Figure 9 As shown, the guide head 3 includes a connecting block 32 and a rotating block 33. The connecting block 32 is mounted on the sliding frame 12 and moves with the sliding frame 12. The rotating block 33 is rotatably connected to the connecting block 32. The second end of the guide rod 31 (with...) Figure 5 For reference, the second end (the upper end) has an annular groove 313. The rotating block 33 has elastic parts 331 arranged in a circular array to limit the annular groove 313. The connecting block 32 has a through groove 321 for the elastic parts 331 to pass through. The through groove 321 has rounded corners on both sides. The elastic parts 331 disengage from the annular groove 313 along with the rounded corners. When locking is required, the rotating block 33 is driven to rotate (the driving source can be a motor, which is connected to the motor output end with a gear to achieve rotation). The elastic parts 331 are rotated towards the through groove 321. The elastic parts 331 rebound and pass through the through groove 321 into the annular groove 313 to fix the second end of the guide rod 31. When unlocking is required, the rotating block 33 is driven to rotate. The elastic parts 331 deform along the rounded corners as they rotate and disengage from the annular groove 313 to complete the unlocking.

[0038] In another embodiment of the present invention, a lubrication assembly 5 is provided on the top of the outer frame 21. The lubrication assembly 5 includes an oil tank 50 disposed inside the outer frame 21 and a fixed frame 51 disposed on the top of the outer frame 21. A rotating column 52 is rotatably connected to the fixed frame 51. An oil supply pipe 55 is disposed on the oil tank 50. A sliding column 53 is slidably connected to a square sliding column 511 disposed on the fixed frame 51. A return spring 531 is disposed between the sliding column 53 and the fixed frame 51. The rotating column 52 can rotate along the sliding column 53. A spiral oil pipe 551 is disposed on the rotating column 52. The spiral oil pipe 551 has an outwardly expanding conical shape and is elastic. The spiral oil pipe 551 is connected to the oil supply pipe 55. A transmission thread groove is provided on the sliding column 53. The bushing 6 is equipped with a ball nut 521, which engages with the drive thread groove. When the bushing 6 is installed on the guide rod 31, the spiral oil pipe 551 is not restricted or compressed by the arm ring 41. The oil outlet of the spiral oil pipe 551 will adhere to the outer wall of the bushing 6. Subsequently, during the movement and compression of the sliding frame 12, the sliding column 53 slides along the square sliding column 511. At this time, the drive thread groove drives the ball nut 521 to rotate, so that the spiral oil pipe 551 rotates while discharging oil, covering the outer wall of the bushing 6 with a ring of lubricating oil. This unifies the lubrication station and the assembly station, making it more suitable for automated assembly and reducing the movement of the robotic arm. After adding lubricating oil to the outer side of the bushing 6 (the outer side is the surface of the outer ring 61), the outer ring 61 of the bushing 6 is less likely to be damaged during assembly.

[0039] Preferably, an oil pump can be installed inside the oil tank 50 to pump oil into the oil pipeline 55.

[0040] First, the rotating block 33 is driven to rotate, and the elastic part 331 deforms along the rounded corners and disengages from the through groove 321. Then, the end of the guide rod 31 with the annular groove 313 is inserted into the connecting block 32, and the rotating block 33 is driven to rotate again, causing the elastic part 331 to rotate toward the through groove 321. The elastic part 331 rebounds, passes through the through groove 321, and enters the annular groove 313 to fix the second end of the guide rod 31. Next, the sliding frame 12 moves down, embedding the spherical connector 532 into the spherical mating groove 312 for fixation. The guide head 3 is released from its restriction on the guide rod 31, and the guide rod 31 is restricted to the spherical connector 532. The sliding frame 12 is then lifted, and the inner ring 62 of the bushing 6 is inserted toward the second end of the guide rod 31. The sliding frame 12 is then driven to move down again. The spherical connector 532 pushes the flexible head 311 into the inner ring 62 and drives the rotating block 33 to rotate and re-fix the guide rod 31. At the same time, during the movement and compression of the sliding frame 12, the sliding column 53 slides along the square sliding column 511. At this time, the transmission thread groove drives the ball nut 521 to rotate, so that the spiral oil pipe 551 rotates while discharging oil, covering the outer wall of the bushing 6 with a ring of lubricating oil. Then, the sliding frame 12 is lifted, and the arm ring 41 that needs to be installed on the bushing 6 is placed into the limiting groove 211. Then, with the limiting groove 211 as the center, the other arm ring 41 of the swing arm 4 is pushed towards the arc block 22, so that the elastic element is compressed and the arc block 22 is inserted into the arm ring 41 to complete the installation of the swing arm 4. Finally, the sliding frame 12 moves down to press the bushing 6 into the arm ring 41.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic assembly device for a car upper swing arm, comprising a hydraulic press (1) with a limiting fixture (2) and a sliding frame (12), a swing arm (4) with an arm collar (41), and a bushing (6), characterized in that, The sliding frame (12) is provided with a guide head (3), and the limiting fixture (2) is coaxially connected with a guide rod (31). The first end of the guide rod (31) is provided with a flexible head (311). The guide rod (31) is pressed down and connected to the guide head (3) along with the sliding frame (12), and the flexible head (311) drives the bushing (6) to fit against the guide head (3).

2. The automatic assembly equipment for automotive upper swing arms according to claim 1, characterized in that, The limiting fixture (2) includes an outer frame (21), and the two ends of the outer frame (21) are respectively provided with a coaxial limiting groove (211) and a movable arc block (22). The limiting groove (211) and the arc block (22) respectively limit the two arm rings (41) of the swing arm (4).

3. The automatic assembly equipment for automotive upper swing arms according to claim 2, characterized in that, The outer frame (21) has a limiting rod (23) on its side wall, and the limiting rod (23) fits against the swing arm (4).

4. The automatic assembly equipment for automotive upper swing arms according to claim 1, characterized in that, The flexible head (311) is provided with a spherical docking groove (312), and the limiting fixture (2) is provided with a spherical connector (532). The spherical connector (532) retains the guide rod (31) when the guide rod (31) is not locked by the guide head (3).

5. The automatic assembly equipment for automotive upper swing arms according to claim 1, characterized in that, The guide head (3) includes a connecting block (32) and a rotating block (33). The second end of the guide rod (31) is provided with an annular groove (313). The rotating block (33) is provided with elastic parts (331) arranged in a circular array to limit the annular groove (313).

6. The automatic assembly equipment for automotive upper swing arms according to claim 5, characterized in that, The connecting block (32) has a through groove (321) for the elastic part (331) to pass through. The through groove (321) has rounded corners on both sides. The elastic part (331) disengages from the annular groove (313) along with the rounded corners.

7. The automatic assembly equipment for automotive upper swing arms according to claim 3, characterized in that, The outer frame (21) has a slanted groove (232) on its side wall, and a fixed screw sleeve (231) is slidably connected to the slanted groove (232). The limiting rod (23) is threadedly connected to the fixed screw sleeve (231).

8. The automatic assembly equipment for automotive upper swing arms according to claim 4, characterized in that, The limiting fixture (2) is slidably connected to a sliding column (53) for carrying the ball joint (532), and the sliding column (53) slides and fixes the guide rod (31) as the sliding frame (12) is pressed down.

9. The automatic assembly equipment for automotive upper swing arms according to claim 5, characterized in that, The bushing (6) includes an outer ring (61), a flexible interlayer (63), and an inner ring (62), with the outer ring (61) and the connecting block (32) having opposite ends.

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