An assembly for an electric actuator

Abstract

This invention discloses an assembly device for an electric actuator, relating to the field of assembly device technology. The assembly device includes a main frame and a multi-station turntable vertically and rotatably mounted on top of the main frame. The stations located on top of the main frame include a loading station, a bearing pressing station, a connecting rod pressing station, a connecting rod welding station, and a transfer station, sequentially distributed around the multi-station turntable. The bearing pressing station is equipped with a first pressing mechanism, the connecting rod pressing station with a second pressing mechanism, the connecting rod welding station with a welding mechanism, and the transfer station with a transfer pressing mechanism. A conveying mechanism is located on top of the main frame, at the end of the transfer pressing mechanism furthest from the multi-station turntable. The conveying mechanism carries and conveys the lower cover assembly via a pallet. This invention achieves efficient assembly of the electric actuator through the cooperation of the multi-station turntable, the first pressing mechanism, the second pressing mechanism, the transfer pressing mechanism, the conveying mechanism, and the pallet.

Description

Technical Field

[0001] This invention relates to the field of assembly equipment technology, and more specifically to an assembly equipment for an electric actuator. Background Technology

[0002] Electric actuators are used to convert their own energy into mechanical motion, and their final output is rotary mechanical motion.

[0003] Chinese Patent Publication No. CN209638493U discloses an electric actuator with a surface-mount tactile switch. The assembly of such electric actuators is complex. The actuator includes a housing (i.e., an upper cover and a lower cover), a gear reduction assembly and a motor disposed within the housing, with the input gear of the gear reduction assembly being drively connected to the motor. The gear reduction assembly includes meshing sector gears and double-layer gears.

[0004] In the existing technology, the assembly of electric actuators with gear reduction units is difficult, lacking suitable assembly equipment and processes, resulting in low work efficiency and high labor costs. The assembly process of the electric actuator assembly is labor-intensive, time-consuming, and difficult to guarantee in terms of assembly quality. Summary of the Invention

[0005] This invention proposes an assembly device for electric actuators to solve the problems of complex assembly operations and low work efficiency.

[0006] The present invention discloses an assembly device for an electric actuator, comprising a main frame and a multi-station turntable vertically and rotatably mounted on the top of the main frame; The workstations located on the top of the main frame include a material loading station, a bearing pressing station, a connecting rod pressing station, a connecting rod welding station, and a transfer station, which are arranged sequentially around the periphery of the multi-station turntable. The top of the main frame is provided with a first pressing mechanism placed at the bearing pressing station, a second pressing mechanism placed at the connecting rod pressing station, and a welding mechanism placed at the connecting rod welding station; The top of the main frame is provided with a conveying mechanism and a transfer pressing mechanism extending along the first horizontal direction; The conveying mechanism is spaced apart from the multi-station turntable; the transfer and pressing mechanism is located between the conveying mechanism and the multi-station turntable. The conveying mechanism carries the lower cover assembly on a tray; the conveying mechanism is equipped with a lifting component located below the tray, which is suitable for controlling the tray to move or stay. The control mechanism mounted on the main frame is adapted to control the transfer and pressing mechanism to transfer and press the upper cover assembly, which has been transferred to the transfer station, onto the lower cover assembly within the pallet when the pallet is stationary. Through the coordination of the multi-station turntable, the first pressing mechanism, the second pressing mechanism, the transfer and pressing mechanism, the conveying mechanism, and the pallet, efficient assembly of the electric actuator is achieved, effectively reducing the time and cost of manual operation and improving work efficiency.

[0007] Optionally, the multi-station turntable includes a turntable drive module and a turntable body; The bottom of the turntable body is mounted on the main frame via the turntable drive module; the turntable body is horizontally positioned and placed above the main frame. The top of the turntable body is provided with a positioning clamp, which is adapted to be distributed relative to the workstation on the main frame under the drive of the turntable drive module; The positioning fixture includes a positioning base plate, a main positioning component, and an auxiliary positioning component; the positioning base plate is installed on the top of the turntable body, and the main positioning component and the auxiliary positioning component are spaced apart on the top of the positioning base plate; The top of the main positioning component is provided with a main positioning groove for accommodating the upper cover assembly and a connecting rod positioning groove for accommodating the connecting rod; the main positioning groove is provided with a C-shaped limiting block for limiting the sector gear. A support spring is connected between the main positioning component and the positioning base plate; the lower end of the main positioning component passes through the positioning base plate and the turntable body in sequence, and extends to the outside of the turntable body; the lower end face of the main positioning component is adapted to abut against the second support seat on the second pressing mechanism when the second pressing mechanism performs linkage pressing. The top of the auxiliary positioning component has an auxiliary positioning groove for accommodating the upper cover. This design effectively positions the upper cover assembly.

[0008] Optionally, the first pressing mechanism includes a first transfer assembly and a first pressing assembly respectively disposed on the top of the main frame; The first transfer assembly includes a first gantry and a first drive module; The first gantry frame is disposed on top of the main frame and is located between the multi-station turntable and the first pressing assembly; The fixed end of the first drive module is set on the top crossbeam of the first gantry; the drive end of the first drive module is provided with a first pneumatic finger for gripping the top cover; the first drive module is adapted to drive the first pneumatic finger to transfer the top cover to the multi-station turntable or the first pressing assembly. The first pressing assembly includes a first press, a bearing head, and a first support base; The first press is mounted on top of the main frame; The bearing pressure head is connected to the drive end of the first press; The first support is mounted on the first frame of the first press and is positioned below the bearing head. The top of the first support is provided with a first receiving groove for accommodating the upper cover. A support rod is vertically installed within the first receiving groove. The bottom of the support rod is connected to the first frame of the first press, and the top of the support rod is provided with a second receiving groove for accommodating the bearing. This design allows the bearing to be press-fitted into the upper cover.

[0009] Optionally, the first support base is a liftable elastic support base; the first receiving groove is provided with a first positioning hole that mates with the upper cover; A first abutting rod is vertically arranged on the drive end of the first press; the first abutting rod is spaced apart from the bearing pressure head, and the first abutting rod is adapted to abut against the top surface of the first support base; The support rod includes a rod body and a first elastic element; The rod is vertically arranged, with its lower end connected to the first base plate of the first support seat, and a bearing positioning sleeve fitted around its upper outer periphery; the inner hole at the upper end of the bearing positioning sleeve and the top surface of the rod form the second receiving groove. The first elastic element is sleeved on the rod body, and the upper and lower ends of the first elastic element abut against the rod body and the bearing positioning sleeve, respectively. The rod body has a vertically extending limiting groove that mates with the bearing positioning sleeve. This design reduces the difficulty of press-fitting the bearing into the upper cover.

[0010] Optionally, the fixed end of the first pneumatic finger is provided with a positioning rod; The positioning rod includes a insertion rod and a second elastic element; The insertion rod is vertically arranged, and its upper end is slidably inserted through the fixed end of the first pneumatic finger and extends beyond the fixed end of the first pneumatic finger. The top of the insertion rod is provided with a limiting cover plate, which is positioned above the first pneumatic finger fixing end; The lower end of the insertion rod is adapted to be inserted into the bearing mounting hole of the upper cover, or into the inner ring of the bearing; a limiting ring is provided on the lower middle outer peripheral wall of the insertion rod, and the bottom of the limiting ring is adapted to be spaced apart from the top surface of the upper cover. The second elastic element is sleeved on the insert rod and positioned between the first pneumatic finger fixing end and the limiting ring. This design guides the upper cover.

[0011] Optionally, the second pressing mechanism includes a second press, a second drive module, a connecting rod press head, and a second support base; The second press is located on top of the main frame; The fixed end of the second drive module is connected to the drive end of the second press; the drive end of the second drive module is connected to the upper end of the connecting rod pressure head. The bottom of the connecting rod pressure head is provided with an air hole for adsorbing the connecting rod; the middle section of the connecting rod pressure head is provided with an air pipe connector that communicates with the air hole, and the air pipe connector is adapted to be connected to the first air extraction device. The bottom of the connecting rod pressure head is provided with a clearance groove to allow the eccentric rod on the connecting rod to pass. This design allows the bearing to be press-fitted into the upper cover.

[0012] Optionally, the transfer and pressing mechanism includes a second gantry, a third drive module, a second pneumatic finger, an engagement assembly, and an abutment assembly; The second gantry is mounted on top of the main frame and is located between the multi-station turntable and the conveying mechanism; The fixed end of the second pneumatic finger is mounted on the top crossbeam of the second gantry via the third drive module; the drive end of the second pneumatic finger is adapted to clamp the top cover assembly. The third drive module is adapted to drive the second pneumatic finger to transfer the upper cover assembly on the multi-station turntable to the tray; The fixed end of the meshing component is disposed on the driving end of the third driving module. The driving end of the meshing component is provided with a paddle block. The slot on the paddle block is adapted to cooperate with the eccentric rod on the connecting rod. The meshing component is adapted to indirectly drive the gear on the upper cover component to rotate through the paddle block when the upper cover component is placed on the lower cover component, so that the gear on the upper cover component meshes with the gear on the lower cover component. The abutment component is vertically arranged, with its upper end connected to the drive end of the third drive module and its lower end adapted to abut against the top surface of the upper cover component. The third drive module is adapted to drive the abutment component to descend when the gears on the upper cover component and the lower cover component mesh, so that the upper cover component is pressed onto the lower cover component. This design allows the upper cover component and the lower cover component to be pressed together.

[0013] Optionally, the abutment assembly includes an abutment drive module, a connecting frame, and a second abutment rod; The upper end of the abutting drive module is a fixed end, which is disposed on the drive end of the third drive module, and the lower end of the abutting drive module is a drive end; The connecting frame is positioned below the driving end of the third driving module; the upper end of the connecting frame is slidably inserted through the driving end of the third driving module and connected to the upper limit plate; a third elastic element is provided between the lower end of the connecting frame and the driving end of the third driving module. The second abutment rod is vertically disposed at the bottom of the connecting frame and is adapted to abut against the top surface of the upper cover assembly; The upper limit plate is positioned below the driving end of the abutment driving module; the abutment driving module is adapted to drive the upper limit plate downward so that the upper limit plate abuts against the driving end of the third driving module. This scheme is used to assist the meshing of gears within the upper cover assembly and gears within the lower cover assembly.

[0014] Optionally, the conveying mechanism includes a conveyor belt, the lifting assembly, a first sensor, and a stopper; There are two conveyor belts, which are arranged in parallel and spaced apart; the conveyor frame of the conveyor belt is mounted on the main frame by a corresponding conveyor mounting block; the conveyor belt is adapted to convey the tray placed on the top surface of the two conveyor belts in a second horizontal direction. The lifting assembly is vertically arranged and positioned between the two conveyor belts; the lower end of the lifting assembly is a fixed end, connected to the main frame. The first sensor is disposed on the top of the main frame and on the side of the conveyor belt away from the lifting assembly; the first sensor is adapted to detect whether the tray being conveyed on the conveyor belt has moved to directly above the lifting assembly; The stopper is positioned between the two conveyor belts; the fixed end of the stopper is mounted on the conveyor frame of the conveyor belt; the stopper is adapted to control the tray to stop when the tray flows to directly above the lifting assembly. The upper end of the lifting assembly is a drive end, adapted to drive the pallet to contact or separate from the top surface of the conveyor belt when the stop device controls the pallet to stop. This scheme is used to control the pallet's stopping or movement.

[0015] Optionally, the conveying mechanism further includes a limiting block disposed on the top of the main frame; The limiting block is disposed on the top of the main frame and located on the side of the conveyor belt away from the lifting assembly; the limiting part of the limiting block is positioned above the tray and is adapted to abut against the tray when the tray separates from the top surface of the conveyor belt. The top of the lifting assembly is provided with a pin suitable for inserting the tray. This design ensures that the tray stops smoothly.

[0016] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: By coordinating a multi-station turntable, a first pressing mechanism, a second pressing mechanism, a transfer pressing mechanism, a conveying mechanism, and a pallet, the electric actuator can be assembled efficiently, effectively reducing the time and cost of manual operation, improving work efficiency, and reducing assembly difficulty. The efficient assembly of the top cover assembly is achieved through the cooperation of a multi-station turntable, a first pressing mechanism, a second pressing mechanism, and a welding mechanism. The upper cover assembly can be pressed onto the lower cover assembly through the cooperation of the transfer pressing mechanism, the pallet, and the lifting assembly. By setting a first pressing mechanism, the bearing can be pressed into the upper cover; By setting up a second pressing mechanism in conjunction with a positioning fixture, the connecting rod is pressed onto the rotating shaft of the sector gear.

[0017] The above description of the disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the electric actuator in this invention; Figure 2 This is an exploded view of the electric actuator in this invention; Figure 3 This is a three-dimensional schematic diagram of the assembly device in this invention; Figure 4 This is a top view of the assembly device in this invention; Figure 5 This is a schematic diagram of the multi-station turntable in this invention; Figure 6 This is a partial schematic diagram of the multi-station turntable in this invention; Figure 7 This is a schematic diagram of the first pressing mechanism in this invention; Figure 8 This is a schematic diagram showing the main positioning component and the auxiliary positioning component placed at the loading station in this invention; Figure 9 This is a partial schematic diagram (a) of the first pressing mechanism in this invention; Figure 10 This is a schematic diagram of the positioning rod in this invention; Figure 11 This is a partial schematic diagram (II) of the first pressing mechanism in this invention; Figure 12This is a schematic diagram of the first support base and the support rod in this invention; Figure 13 This is a schematic diagram of the support rod in this invention; Figure 14 This is a schematic diagram of the second pressing mechanism in this invention; Figure 15 This is a schematic diagram of the connecting rod pressure head in this invention; Figure 16 This is a schematic diagram of the transfer and pressing mechanism in this invention; Figure 17 This is a partial schematic diagram of the transfer and pressing mechanism in this invention; Figure 18 This is a schematic diagram of the second pneumatic finger gripping the top cover assembly in this invention; Figure 19 This is a schematic diagram of the second pneumatic finger and the contact component in this invention; Figure 20 This is a schematic diagram of the upper cover assembly and the lower cover assembly; Figure 21 This is a schematic diagram of the conveying mechanism in this invention.

[0020] Explanation of icon numbers: 1. Main unit rack; 2. Multi-station turntable; 21. Turntable drive module; 22. Turntable body; 23. Positioning base plate; 24. Main positioning component; 241. Main positioning groove; 242. Connecting rod positioning groove; 25. Auxiliary positioning component; 251. Auxiliary positioning groove; 26. Support spring; 27. C-shaped limit block; 3. First pressing mechanism; 31. First gantry frame; 32. First drive module; 33. First pneumatic finger; 34. First press; 35. Bearing pressure head; 36. First support base; 361. First receiving groove; 362. First positioning hole; 37. Support rod; 371. Rod body; 372. First elastic element; 373. Bearing positioning sleeve; 374. Second receiving groove; 375. Limiting groove; 376. Limiting post; 38. First abutment rod; 39. Positioning rod; 391. Insert rod; 392. Second elastic element; 393. Limiting cover plate; 394. Limiting ring; 4. Second pressing mechanism; 41. Second press; 42. Second drive module; 43. Connecting rod press head; 431. Air hole; 432. Clearance groove; 44. Second support base; 45. Floating positioning head; 5. Transfer and pressing mechanism; 51. Second gantry frame; 52. Third drive module; 53. Second pneumatic finger; 531. First clamping block; 532. Second clamping block; 54. Meshing assembly; 541. Meshing drive module; 542. Drive gear; 543. Driven gear; 544. Meshing connecting rod; 545. Pulley; 55. Abutting assembly; 551. Abutting drive module; 552. Connecting frame; 553. Second abutting rod; 554. Upper limit plate; 555. Third elastic element; 556. Anti-rotation guard; 56. Adapter frame; 57. Mounting base; 58. Vacuum suction cup; 59. Displacement sensor; 6. Conveying mechanism; 61. Conveyor belt; 611. Conveying mounting block; 62. Lifting assembly; 63. First sensor; 64. Stopper; 65. Limit block; 7. Pallet; 8. Electric actuator; 81. Upper cover assembly; 811. Upper cover; 812. Sector gear; 813. Upper gear; 814. Bearing; 815. Connecting rod; 8151. Eccentric rod; 82. Lower cover assembly; 821. Lower cover; 822. Lower gear. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0022] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limiting the present invention.

[0023] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0025] Example 1 This embodiment provides an assembly device for an electric actuator, used to assemble the components of an electric actuator into a finished electric actuator.

[0026] In this embodiment, please refer to Figures 1-2 As shown, the electric actuator 8 includes an upper cover assembly 81 and a lower cover assembly 82.

[0027] The upper cover assembly 81 includes an upper cover 811, a sector gear 812, an upper gear 813, a bearing 814, and a connecting rod 815. Specifically, the upper cover 811 is a hollow cavity with an open lower end, and both the sector gear 812 and the upper gear 813 are located inside the upper cover 811. The upper end of the rotating shaft of the sector gear 812 is connected to the bearing mounting hole on the upper cover 811 through the bearing 814, and the rotating shaft of the sector gear 812 extends upward to the outside of the upper cover 811. The upper gear 813 is a double-layer gear, including a large gear and a small gear arranged sequentially from top to bottom. The large gear of the upper gear 813 is located between the sector gear 812 and the upper cover 811. The small gear of the upper gear 813 meshes with the sector gear 812. The connecting rod 815 is located above the upper cover 811. One end of the connecting rod 815 is connected to the rotating shaft of the sector gear 812, and the other end is provided with an eccentric rod 8151.

[0028] The lower cover assembly 82 includes a lower cover 821, a lower gear 822, and a motor. The lower cover 821 is a hollow cavity with an open top, and the lower gear 822 is located inside the cavity of the lower cover 821. The lower end of the shaft of the lower gear 822 is rotatably connected to the lower cover 821. The lower gear 822 is adapted to mesh with the large gear of the upper gear 813. The upper cover 811 and the lower cover 821 are adapted to be interlocked. The motor is vertically mounted inside the lower cover 821, and its output shaft is adapted to drive the lower gear 822 to rotate.

[0029] The inner cavity of the lower cover 821 has a vertically mounted rotating shaft that mates with the axial center hole of the upper gear 813. The upper end of this shaft is adapted to be inserted into the mounting groove on the upper cover 811. The lower cover 821 is adapted to be inserted into the lower end of the rotating shaft of the sector gear 812. In addition, the inner edge of the upper cover 811 is provided with a positioning post, and the inner edge of the lower cover 821 is provided with a corresponding positioning hole to ensure that the upper cover 811 and the lower cover 821 are effectively engaged.

[0030] Please see Figures 3-4 As shown, the assembly device includes a main frame 1, a multi-station turntable 2, a first pressing mechanism 3, a second pressing mechanism 4, a welding mechanism, a transfer pressing mechanism 5, a conveying mechanism 6, and a control mechanism. The multi-station turntable 2 is vertically and rotatably mounted on top of the main frame 1. The first pressing mechanism 3, the second pressing mechanism 4, the welding mechanism, the transfer pressing mechanism 5, the conveying mechanism 6, and the control mechanism are respectively located on top of the main frame 1.

[0031] The top of the main frame 1 has at least five workstations, including a loading station, a bearing pressing station, a connecting rod pressing station, a connecting rod welding station, and a transfer station. These stations are sequentially distributed around the multi-station turntable 2. Specifically, the first pressing mechanism 3 is located at the bearing pressing station. The second pressing mechanism 4 is located at the connecting rod pressing station. The welding mechanism is located at the connecting rod welding station. The conveying mechanism 6 is spaced apart from the multi-station turntable 2. The transfer pressing mechanism 5 is located between the conveying mechanism 6 and the multi-station turntable 2. The conveying mechanism 6 carries the lower cover assembly 82 via a pallet 7. The conveying mechanism 6 has a lifting assembly 62 located below the pallet 7, suitable for controlling the movement or stopping of the pallet 7.

[0032] The control mechanism includes a controller and a control panel. The controller is connected to the multi-station turntable 2, the first pressing mechanism 3, the second pressing mechanism 4, the welding mechanism, the transfer pressing mechanism 5, and the conveying mechanism 6, respectively. When the pallet 7 is in a stationary state, the control mechanism is adapted to control the transfer pressing mechanism 5 to transfer the upper cover assembly 81, which has been transferred to the transfer station, to the lower cover assembly 82 in the pallet 7, and press the upper cover assembly 81 onto the lower cover assembly 82.

[0033] In this embodiment, the transfer and pressing mechanism 5 extends along a first horizontal direction, and the conveying mechanism 6 extends along a second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular to each other and are located on the same horizontal plane.

[0034] Please see Figure 3 and Figure 5 As shown, the multi-station turntable 2 includes a turntable drive module 21 and a turntable body 22. The bottom of the turntable body 22 is mounted on the main frame 1 via the turntable drive module 21. The turntable body 22 is horizontally positioned above the main frame 1. The turntable drive module 21 is electrically connected to the control mechanism and is used to drive the turntable body 22 to rotate or stop.

[0035] The top of the turntable body 22 is provided with a positioning fixture, which is suitable for being distributed relative to the workstation on the main frame 1 under the drive of the turntable drive module 21.

[0036] In some embodiments, a positioning fixture is provided on the top of the turntable body 22. Driven by the turntable drive module 21, the positioning fixture moves to the loading station, or the bearing pressing station, or the connecting rod pressing station, or the connecting rod welding station, or the transfer station.

[0037] In this embodiment, the top of the turntable body 22 is provided with multiple positioning clamps at intervals.

[0038] Preferably, there are five positioning fixtures. The five positioning fixtures are distributed sequentially along the rotation direction of the multi-station turntable 2, and are suitable for being distributed relative to the stations on the main frame 1. In this embodiment, there are at least five positioning fixtures. The turntable drive module 21 drives the turntable body 22 to rotate, so that the positioning fixtures on the turntable body 22 are sequentially transferred to the loading station, bearing pressing station, connecting rod pressing station, connecting rod welding station, and transfer station.

[0039] Please see Figure 6 , Figure 6 and Figure 8 As shown, the positioning fixture includes a positioning base plate 23, a main positioning component 24, and an auxiliary positioning component 25. The positioning base plate 23 is mounted on the top of the turntable body 22. The main positioning component 24 and the auxiliary positioning component 25 are spaced apart on the top of the positioning base plate 23. The top of the main positioning component 24 has a main positioning groove 241 for accommodating the upper cover assembly 81 and a connecting rod positioning groove 242 for accommodating the connecting rod 815. The main positioning groove 241 has an insertion hole for inserting the shaft of the sector gear 812. A vertical support rod is provided in the main positioning groove 241, suitable for engaging with the axial center hole of the upper gear 813. The main positioning groove 241 also has a C-shaped limiting block 27 for limiting the sector gear 812 to prevent accidental rotation. The top of the auxiliary positioning component 25 has an auxiliary positioning groove 251 for accommodating the upper cover 811.

[0040] When the unloaded positioning fixture is transferred to the loading station, the operator places the various components of the upper cover assembly 81 onto the positioning fixture to complete the loading process. Specifically, the operator vertically installs the upper gear 813 and the sector gear 812 on the main positioning groove 241, with the upper gear 813 and the sector gear 812 meshing; the upper cover 811 is placed with its opening facing downwards on the auxiliary positioning groove 251; and the connecting rod 815 is placed in the connecting rod positioning groove 242 (e.g., ...). Figure 8 (As shown).

[0041] Furthermore, a support spring 26 is connected between the main positioning member 24 and the positioning base plate 23. The lower end of the main positioning member 24 passes through the positioning base plate 23 and the turntable body 22 in sequence, and extends to the outside of the turntable body 22. When the second pressing mechanism 4 performs linkage pressing, the lower end face of the main positioning member 24 is adapted to abut against the second support seat 44 on the second pressing mechanism 4 to protect the turntable drive module 21 and the turntable body 22.

[0042] In this embodiment, the main positioning component 24 includes a positioning top plate and positioning main columns arranged sequentially from top to bottom. The positioning bottom plate 23 is bolted to the top of the turntable body 22. There are two positioning main columns, distributed at both ends of the positioning bottom plate 23. The positioning main columns are vertically arranged, with their upper ends connected to the positioning top plate and their lower ends slidably passing through the positioning bottom plate 23 and the turntable body 22. Support springs 26 are sleeved on the corresponding positioning main columns and positioned between the positioning top plate and the positioning bottom plate 23. The upper and lower ends of the support springs 26 are connected to the positioning top plate and the positioning bottom plate 23, respectively. A positioning support column is located at the bottom center of the positioning top plate, with its lower end passing through the positioning bottom plate 23 and the turntable body 22. The lower end face of the positioning support column is adapted to abut against the second support seat 44.

[0043] In this embodiment, the main positioning member 24 and the auxiliary positioning member 25 are arranged at a distance along the radial direction of the turntable body 22, and the auxiliary positioning member 25 is located on the side of the main positioning member 24 near the center of the turntable body 22.

[0044] Please see Figures 9-12 As shown, the first pressing mechanism 3 includes a first transfer assembly and a first pressing assembly. The first transfer assembly and the first pressing assembly are respectively disposed on the top of the main frame 1.

[0045] The first transfer assembly includes a first gantry 31 and a first drive module 32. The first gantry 31 is mounted on top of the main frame 1 and located between the multi-station turntable 2 and the first pressing assembly. The fixed end of the first drive module 32 is mounted on the top crossbeam of the first gantry 31. The drive end of the first drive module 32 is provided with a first pneumatic finger 33 for gripping the top cover 811. The first drive module 32 is adapted to drive the first pneumatic finger 33 to transfer the top cover 811 to the multi-station turntable 2 or the first pressing assembly. The first drive module 32 and the first pneumatic finger 33 are electrically connected to a control mechanism.

[0046] In this embodiment, the first drive module 32 includes a first linear module extending along a first horizontal direction and a first lifting module extending along a vertical direction. The fixed end of the first linear module is connected to the top crossbeam of the first gantry 31, the drive end of the first linear module is connected to the fixed end of the first lifting module, and the drive end of the first lifting module is connected to the fixed end of the first pneumatic finger 33.

[0047] The first pressing assembly includes a first press 34, a bearing head 35, and a first support base 36. The first press 34 is electrically connected to a control mechanism. The first press 34 is located on top of the main frame 1. The bearing head 35 is connected to the drive end of the first press 34, meaning the first press 34 can drive the bearing head 35 to move up and down. The first support base 36 is mounted on the first frame of the first press 34 and is positioned below the bearing head 35. The top of the first support base 36 has a first receiving groove 361 for accommodating the upper cover 811. A support rod 37 is vertically arranged in the first receiving groove 361. The bottom of the support rod 37 is connected to the first frame of the first press 34, and the top of the support rod 37 has a second receiving groove 374 for accommodating the bearing 814.

[0048] In this embodiment, the first frame of the first press 34 is a C-shaped frame, the upper end of which is connected to the fixed end of the electric cylinder, and the driving end of the electric cylinder is connected to the upper end of the bearing pressure head 35. To ensure that the bearing pressure head 35 rises and falls smoothly, a sliding rail and a slider that cooperate with each other are provided between the bearing pressure head 35 and the first frame of the first press 34.

[0049] Furthermore, the first support base 36 is a liftable elastic support base. Specifically, the first support base 36 includes a first top plate, a first column, and a first bottom plate arranged sequentially from top to bottom. The first bottom plate is connected to the first frame of the first press 34. There are four first columns, distributed at the four corners of the first bottom plate. The lower end of the first column is fixedly connected to the first bottom plate, and the upper end of the first column is slidably connected to a blind hole at the bottom of the first top plate. A spring is sleeved on the first column, which is placed between the first top plate and the first bottom plate, and the two ends of the spring are respectively connected to the first top plate and the first bottom plate. A first receiving groove 361 is opened on the top of the first top plate, and a first positioning hole 362 is provided in the first receiving groove 361, which is suitable for cooperating with the positioning post set on the edge of the inner cavity of the upper cover 811.

[0050] Furthermore, a first abutment rod 38 is vertically disposed on the drive end of the first press 34, suitable for cooperating with a liftable elastic support seat (i.e., the first support seat 36). The first abutment rod 38 is spaced apart from the bearing pressure head 35. The first abutment rod 38 is suitable for abutting against the top surface of the first support seat 36.

[0051] For further details, please refer to Figure 13As shown, the support rod 37 includes a rod body 371, a first elastic element 372, and a bearing positioning sleeve 373. The rod body 371 is vertically arranged, with its lower end connected to the first base plate, and the bearing positioning sleeve 373 is fitted around its upper outer periphery. The inner hole at the upper end of the bearing positioning sleeve 373 and the top surface of the rod body 371 form a second receiving groove 374. The first elastic element 372 is fitted on the rod body 371, and its upper and lower ends abut against the rod body 371 and the bearing positioning sleeve 373, respectively. To prevent the bearing positioning sleeve 373 from accidentally separating from the rod body 371, a limiting groove 375 is vertically formed on the rod body 371, and a limiting post 376 that cooperates with the limiting groove 375 is provided on the bearing positioning sleeve 373.

[0052] For further details, please refer to Figure 10 As shown, the fixed end of the first pneumatic finger 33 is provided with a positioning rod 39. The positioning rod 39 includes an insertion rod 391 and a second elastic element 392. The insertion rod 391 is vertically arranged, and its upper end is slidably inserted through the fixed end of the first pneumatic finger 33 and extends beyond the fixed end of the first pneumatic finger 33. A limiting cover plate 393 is provided at the top of the insertion rod 391, and the limiting cover plate 393 is placed above the fixed end of the first pneumatic finger 33 to prevent the insertion rod 391 from accidentally disengaging from the fixed end of the first pneumatic finger 33. The lower end of the insertion rod 391 is adapted to be inserted into the bearing mounting hole of the upper cover 811 or into the inner ring of the bearing 814. A limiting ring 394 is provided on the lower middle outer peripheral wall of the insertion rod 391, and the bottom of the limiting ring 394 is adapted to be spaced apart from the top surface of the upper cover 811. The second elastic element 392 is sleeved on the insertion rod 391 and is placed between the fixed end of the first pneumatic finger 33 and the limiting ring 394. The two ends of the second elastic element 392 abut against the fixed end of the first pneumatic finger 33 and the limiting ring 394, respectively.

[0053] In this embodiment, the first pressing mechanism 3 further includes a bearing loading assembly. The bearing loading assembly includes a robotic arm and a tray for holding bearings. The robotic arm is used to place the bearings from the tray into the second receiving slot 374.

[0054] The working principle of the first pressing mechanism 3 is as follows: The control mechanism drives the robotic arm to place the bearing 814 (e.g., ...) in the second receiving slot 374. Figure 12 As shown), so that bearing 814 is set vertically.

[0055] When the positioning fixture that has completed the loading process moves to the bearing pressing station, the control mechanism drives the first pneumatic finger 33 to descend via the first drive module 32, so that the first pneumatic finger 33 moves to the auxiliary positioning component 25 of the positioning fixture, and the positioning rod 39 is inserted into the bearing mounting hole of the upper cover 811, with the tip of the lower end of the positioning rod 39 engaging with the groove at the top of the rotating shaft of the sector gear 812. The limiting ring 394 is positioned above the upper cover 811 and spaced apart from the upper cover 811. The control mechanism controls the first pneumatic finger 33 to clamp the upper cover 811 placed on the auxiliary positioning component 25. The control mechanism drives the first pneumatic finger 33 via the first drive module 32 to transfer the upper cover 811 to the first receiving groove 361 at the top of the first support base 36. At this time, the bearing 814 in the second receiving groove 374 is positioned below the upper cover 811, and is distributed opposite to the bearing mounting hole on the upper cover 811.

[0056] The control mechanism controls the first pneumatic finger 33 to release the upper cover 811, and then drives the first pneumatic finger 33 to rise through the first drive module 32, so that the positioning rod 39 separates from the bearing mounting hole of the upper cover 811. The control mechanism then drives the first pneumatic finger 33 away from the first press 34 through the first drive module 32, so that the first press 34 can perform subsequent pressing work. After the first pneumatic finger 33 moves away from the first press 34, the control mechanism drives the bearing pressure head 35 and the first abutment rod 38 to descend through the first press 34, so that the bearing pressure head 35 presses down on the upper cover 811, thereby pressing the bearing 814 onto the upper cover 811.

[0057] Specifically, in the initial stage of the first press 34 driving the bearing pressure head 35 and the first abutting rod 38 to descend, the first abutting rod 38 abuts against the top surface of the first support seat 36, and the first abutting rod 38 is distributed around the periphery of the upper cover 811; the bearing pressure head 35 abuts against the top surface around the bearing mounting hole of the upper cover 811. Subsequently, the first press 34 continues to drive the bearing pressure head 35 and the first abutting rod 38 to descend, the bearing pressure head 35 drives the upper cover 811 to descend, thereby pressing the bearing 814 placed in the second receiving groove 374 into the upper cover 811; at the same time, the first abutting rod 38 drives the first top plate of the first support seat 36 to descend, to ensure that the first top plate of the first support seat 36 is relatively stationary with respect to the upper cover 811.

[0058] When the bearing pressure head 35 drives the upper cover 811 to descend, the upper cover 811 drives the bearing positioning sleeve 373 to descend, exposing the bearing 814, which is placed in the second receiving groove 374, to the outside of the support rod 37. At the same time, the bearing 814 is stationary under the support of the rod 371. Therefore, the descending upper cover 811 can press the stationary bearing 814 into the bearing mounting hole of the upper cover 811, and the outer ring of the bearing 814 is interference-fitted with the bearing mounting hole of the upper cover 811.

[0059] After the pressing is completed, the control mechanism drives the bearing pressure head 35 and the first abutment rod 38 to rise and reset via the first press 34. After the bearing pressure head 35 separates from the upper cover 811 and the first abutment rod 38 separates from the first top plate of the first support seat 36, the spring in the first support seat 36 resets and rebounds, so that the first top plate of the first support seat 36 rises and resets; at the same time, the first elastic element 372 on the support rod 37 resets and rebounds, so that the bearing positioning sleeve 373 rises and resets.

[0060] Subsequently, the control mechanism, through the first drive module 32, drives the first pneumatic finger 33 to transfer the assembled bearing 814 and upper cover 811 onto the main positioning component 24 of the original positioning fixture (i.e., the positioning fixture located at the bearing press-fitting station), so that the sector gear 812 shaft placed on the main positioning component 24 is assembled with the inner ring of the bearing 814 mounted on the upper cover 811. Specifically, during the transfer process, the positioning rod 39 is inserted into the inner ring of the bearing 814. After the assembled bearing 814 and upper cover 811 move to directly above the main positioning groove 241, the control mechanism, through the first drive module 32, indirectly drives the bearing 814 and upper cover 811 to descend, so that the upper end of the sector gear 812 shaft is inserted into the inner ring of the bearing 814. During the insertion of the upper end of the sector gear 812's shaft into the inner ring of the bearing 814, the upper end of the sector gear 812's shaft abuts against the lower end of the insertion rod 391, causing the insertion rod 391 to move vertically upward and the second elastic element 392 to be in a compressed state. Therefore, during the insertion of the upper end of the sector gear 812's shaft into the inner ring of the bearing 814, the positioning rod 39 is used to vertically guide and position the assembled bearing 814 and the upper cover 811.

[0061] After the upper end of the sector gear 812's shaft is inserted into the inner ring of the bearing 814, the control mechanism controls the first pneumatic finger 33 to release the upper cover 811. The control mechanism then drives the first pneumatic finger 33 away from the positioning fixture via the first drive module 32 to achieve resetting, i.e., the first pressing mechanism 3 completes the bearing pressing work. During this process, when the upper end of the sector gear 812's shaft separates from the lower end of the insertion rod 391, the second elastic element 392 returns to its original position, allowing the insertion rod 391 to complete its resetting.

[0062] Subsequently, the control mechanism drives the robotic arm to place the bearing 814 in the second receiving slot 374.

[0063] Please see Figures 14-15As shown, the second pressing mechanism 4 includes a second press 41, a second drive module 42, a connecting rod press head 43, and a second support base 44. The second press 41 and the second drive module 42 are electrically connected to the control mechanism. The second press 41 is mounted on the top of the main frame 1. The fixed end of the second drive module 42 is connected to the drive end of the second press 41. The bottom of the connecting rod press head 43 has an air hole 431 for adsorbing the connecting rod 815. The middle section of the connecting rod press head 43 has an air pipe connector that communicates with the air hole 431, and the air pipe connector is suitable for connection to the first suction device. The bottom of the connecting rod press head 43 has a clearance groove 432 for avoiding the eccentric rod 8151 on the connecting rod 815. The first suction device is electrically connected to the control mechanism.

[0064] In this embodiment, the second frame of the second press 41 is a C-shaped frame, with its upper end connected to the fixed end of the electric cylinder, and the driving end of the electric cylinder connected to the fixed end of the second drive module 42. To ensure smooth lifting and lowering of the second drive module 42, a matching slide rail and slider are provided between the fixed end of the second drive module 42 and the second frame of the second press 41. The second drive module 42 extends along a second horizontal direction. The driving end of the second drive module 42 is connected to the upper end of the connecting rod pressure head 43 to drive the connecting rod pressure head 43 to move horizontally.

[0065] In this embodiment, a floating positioning head 45 is provided on the connecting rod pressure head 43. The upper end of the floating positioning head 45 is slidably disposed within the axial center hole of the connecting rod pressure head 43. A spring is provided between the floating positioning head 45 and the connecting rod pressure head 43. The spring is placed in the axial center hole of the connecting rod pressure head 43 and sleeved on the floating positioning head 45. The two ends of the spring are respectively connected to the floating positioning head 45 and the connecting rod pressure head 43. The lower end of the floating positioning head 45 is provided with a column and a pointed tip in sequence. The pointed tip is located below the column. The column is adapted to mate with the mounting hole of the connecting rod 815. The pointed tip is adapted to mate with the groove on the top of the rotating shaft of the sector gear 812.

[0066] The working principle of the second pressing mechanism 4 is as follows: When the positioning fixture that has completed the bearing press-fitting work moves to the connecting rod press-fitting station, the control mechanism drives the connecting rod press head 43 to move to the connecting rod positioning groove 242 of the positioning fixture via the second press 41 and the second drive module 42, so that the connecting rod 815 placed in the connecting rod positioning groove 242 cooperates with the connecting rod press head 43 (i.e., the eccentric rod 8151 of the connecting rod 815 is placed in the clearance groove 432 of the connecting rod press head 43). The control mechanism controls the air hole 431 to evacuate air via the first air extraction device, so that the connecting rod press head 43 effectively adsorbs the connecting rod 815. Afterwards, the control mechanism drives the connecting rod press head 43 and the connecting rod 815 to move directly above the main positioning groove 241 of the positioning fixture via the second press 41 and the second drive module 42, and they are distributed opposite to the upper end of the rotating shaft of the sector gear 812 placed in the main positioning groove 241.

[0067] The control mechanism drives the connecting rod pressure head 43 and connecting rod 815 to descend via the second press 41, so that the connecting rod 815 is pressed onto the upper end of the rotating shaft of the sector gear 812, so that the mounting hole of the connecting rod 815 is interference-fitted with the rotating shaft of the sector gear 812. During the pressing process, the lower end face of the main positioning part 24 abuts against the second support seat 44 to protect the turntable drive module 21 and the turntable body 22.

[0068] After the pressing is completed, the control mechanism stops the air extraction through the first air extraction device, so that the connecting rod pressure head 43 no longer adheres to the connecting rod 815. Then, the second press 41 and the second drive module 42 drive the connecting rod pressure head 43 to reset, that is, the second pressing mechanism 4 completes the connecting rod pressing work. Among them, when the connecting rod pressure head 43 separates from the connecting rod 815, the main positioning component 24 resets and springs back under the action of the support spring 26.

[0069] The welding mechanism includes, but is not limited to, welding robots and welding devices, and is suitable for laser welding. Welding robots are existing technology and will not be described in detail. The welding mechanism is electrically connected to the control mechanism.

[0070] The working principle of the welding mechanism is as follows: When the positioning fixture, having completed the connecting rod press-fitting process, moves to the connecting rod welding station, the control mechanism controls the welding mechanism to weld the connecting rod 815 and the upper end of the rotating shaft of the sector gear 812, which are placed in the main positioning groove 241 of the positioning fixture. After welding is completed, the control mechanism controls the welding mechanism to reset, thus completing the connecting rod welding work. After the connecting rod welding work is completed, the positioning fixture carries the assembled upper cover assembly 81.

[0071] Because the main positioning groove 241 is equipped with a C-shaped limiting block 27, the sector gear 812 will not rotate around its axis during the welding process. Similarly, because the connecting rod 815 is interference-fitted with the axis of the sector gear 812, the connecting rod 815 will not rotate around the axis of the sector gear 812 during the welding process.

[0072] The welding point between the shaft of the sector gear 812 and the connecting rod 815 is located on the top surface of the connecting rod 815, that is, the joint between the upper edge of the mounting hole of the connecting rod 815 and the peripheral wall of the shaft of the sector gear 812.

[0073] Please see Figures 16-19As shown, the transfer and pressing mechanism 5 includes a second gantry 51, a third drive module 52, a second pneumatic finger 53, an engagement assembly 54, and an abutment assembly 55. The third drive module 52, the second pneumatic finger 53, and the engagement assembly 54 are electrically connected to the control mechanism. The second gantry 51 is located on top of the main frame 1 and between the multi-station turntable 2 and the conveying mechanism 6. The fixed end of the second pneumatic finger 53 is mounted on the top crossbeam of the second gantry 51 via the third drive module 52. The drive end of the second pneumatic finger 53 is adapted to grip the top cover assembly 81. The third drive module 52 is adapted to drive the second pneumatic finger 53 to transfer the top cover assembly 81 on the multi-station turntable 2 to the tray 7. The fixed end of the engagement assembly 54 is mounted on the drive end of the third drive module 52, and the drive end of the engagement assembly 54 is provided with a lever 545. The slot on the lever 545 is adapted to engage with the eccentric rod 8151 on the connecting rod 815. When the upper cover assembly 81 is placed on the lower cover assembly 82, the engagement assembly 54 is adapted to indirectly drive the upper gear 813 on the upper cover assembly 81 to rotate via the toggle block 545, so that the upper gear 813 meshes with the lower gear 822 on the lower cover assembly 82. The abutment assembly 55 is vertically arranged, with its upper end connected to the drive end of the third drive module 52, and its lower end adapted to abut against the top surface of the upper cover assembly 81. When the upper gear 813 meshes with the lower gear 822, the third drive module 52 is adapted to drive the abutment assembly 55 to descend, so that the upper cover assembly 81 is pressed onto the lower cover assembly 82.

[0074] In this embodiment, the third drive module 52 includes a second linear module extending along a first horizontal direction and a second lifting module extending along a vertical direction. The fixed end of the second linear module is connected to the top crossbeam of the second gantry 51, and the drive end of the second linear module is connected to the fixed end of the second lifting module. The drive end of the second lifting module is provided with an adapter frame 56, which is connected to the fixed end of the second pneumatic finger 53, the fixed end of the engagement assembly 54, and the upper end of the abutment assembly 55. To ensure smooth lifting and lowering of the adapter frame 56, a slide rail and a slider are provided between the adapter frame 56 and the fixed end of the second lifting module. A mounting base 57 is provided on the top of the adapter frame 56.

[0075] In this embodiment, the second pneumatic finger 53 is positioned at the bottom of the adapter frame 56. The driving end of the second pneumatic finger 53 is provided with two grippers facing each other. (See also...) Figure 19As shown, the two grippers of the second pneumatic finger 53 are each provided with a first gripping block 531, which is located on the inner side of the corresponding gripper. The lower end of the first gripping block 531 has a groove that matches the lower edge protrusion of the upper cover 811. During the process of the second pneumatic finger 53 transferring the upper cover assembly 81, in order to prevent the upper gear 813 on the upper cover assembly 81 from disengaging from the upper cover 811, the two grippers of the second pneumatic finger 53 are also provided with a second gripping block 532, which is located on the outer side of the corresponding gripper. The second gripping block 532 is vertically arranged, with a horizontal limiting part at its lower end and a mating notch at the upper part of the horizontal limiting part for accommodating the upper gear 813. When the driving end of the second pneumatic finger 53 clamps the lower edge protrusion of the upper cover assembly 81 (i.e., the lower edge protrusion of the upper cover 811) through the first clamping block 531, the lower part of the horizontal limiting part of the second clamping block 532 is placed below the upper gear 813 on the upper cover assembly 81 to limit the upper gear 813 in the vertical direction; at the same time, the upper gear 813 is placed in the mating notch of the horizontal limiting part, and the side wall of the mating notch of the horizontal limiting part abuts against the outer periphery of the upper gear 813 to limit the upper gear 813 in the horizontal direction.

[0076] In this embodiment, please refer to Figures 16-19 As shown, the abutment assembly 55 includes an abutment drive module 551, a connecting bracket 552, and a second abutment rod 553. The upper end of the abutment drive module 551 is a fixed end, and the lower end of the abutment drive module 551 is a drive end. The fixed end of the abutment drive module 551 is disposed on the mounting base 57. The drive end of the abutment drive module 551 passes downward through the mounting base 57 and is positioned between the mounting base 57 and the adapter bracket 56. The connecting bracket 552 is positioned below the drive end of the third drive module 52.

[0077] In this embodiment, the abutment drive module 551 is a cylinder, electrically connected to the control mechanism. The connecting frame 552 is positioned below the adapter frame 56. The connecting frame 552 includes a connecting base plate and connecting columns. The connecting base plate is located below the fixed end of the second pneumatic finger 53 and between the two grippers at the driving end of the second pneumatic finger 53. Four connecting columns are provided at the top four corners of the connecting base plate. The upper end of each connecting column slidably passes through the adapter frame 56 and extends between the adapter frame 56 and the mounting base 57. An upper limit plate 554 is provided between two adjacent connecting columns, positioned between the adapter frame 56 and the mounting base 57 to prevent the connecting frame 552 from detaching from the adapter frame 56. The upper limit plate 554 is located below the driving end of the abutment drive module 551. A third elastic element 555 is sleeved on the connecting column, positioned between the adapter frame 56 and the connecting base plate. The two ends of the third elastic element 555 abut against the adapter frame 56 and the connecting base plate, respectively. The second abutment rod 553 is vertically disposed at the bottom of the connecting base plate and distributed between the two grippers at the driving end of the second pneumatic finger 53. The bottom of the second abutment rod 553 is adapted to abut against the top surface of the upper cover assembly 81 (i.e., the top surface of the upper cover 811). The abutment drive module 551 is adapted to drive the upper limit plate 554 to descend so that the upper limit plate 554 abuts against the adapter frame 56.

[0078] Furthermore, there are multiple second abutment rods 553, spaced apart at the bottom of the connecting base plate. When the second pneumatic finger 53 clamps the lower edge protrusion of the upper cover assembly 81 (i.e., the lower edge protrusion of the upper cover 811) through the first clamping block 531, one of the second abutment rods 553 is distributed opposite to the axial center hole of the upper gear 813, and some of the second abutment rods 553 are distributed opposite to the positioning posts provided on the inner edge of the upper cover 811, so as to ensure that the upper cover assembly 81 can be effectively pressed onto the lower cover assembly 82.

[0079] Furthermore, the abutment component 55 also includes an anti-rotation guard 556 (such as...). Figure 18 and Figure 19 (As shown). The anti-rotation guard 556 is vertically arranged and positioned below the connecting base plate. The upper end of the anti-rotation guard 556 is connected to the connecting base plate. When the second pneumatic finger 53 clamps the lower edge protrusion of the upper cover assembly 81 through the first clamping block 531, the anti-rotation guard 556 is positioned above the upper cover assembly 81. When the third drive module 52 is adapted to drive the abutment assembly 55 to descend so that the upper cover assembly 81 is pressed onto the lower cover assembly 82, the anti-rotation guard 556 is positioned above the upper cover assembly 81 to prevent the upper cover 811 on the upper cover assembly 81 from flipping over.

[0080] Furthermore, the transfer and pressing mechanism 5 also includes a vacuum suction cup 58 (such as...). Figure 19As shown in the diagram, the grippers are distributed between the two claws at the driving end of the second pneumatic finger 53. A vacuum suction cup 58 is located at the bottom of the connecting base plate. The middle part of the vacuum suction cup 58 is connected to the connecting base plate via a connecting rod. The upper end of the vacuum suction cup 58 is spaced apart from the connecting base plate, and the upper end of the vacuum suction cup 58 is adapted to be connected to the second suction device via an air pipe connector. The lower end of the vacuum suction cup 58 is the adsorption end, adapted to adsorb the top surface of the upper cover assembly 81 (i.e., the top surface of the upper cover 811). The second suction device is electrically connected to the control mechanism.

[0081] Furthermore, the meshing assembly 54 includes a meshing drive module 541, a driving gear 542, a driven gear 543, a meshing connecting rod 544, and a lever 545. The meshing drive module 541 is electrically connected to the control mechanism. The upper end of the meshing drive module 541 is a fixed end, mounted on the mounting base 57. The lower end of the meshing drive module 541 is a driving end, connected to the driving gear 542. The driving gear 542 is positioned between the adapter frame 56 and the mounting base 57. The driven gear 543 is positioned between the adapter frame 56 and the mounting base 57, and is rotatably mounted on the adapter frame 56. The driving gear 542 meshes with the driven gear 543. The meshing connecting rod 544 is vertically positioned, and its upper end is connected to the axial center hole of the driven gear 543. The lower end of the engaging connecting rod 544 rotatably passes through the adapter frame 56 and the connecting base in sequence, and is connected to the lever 545. The lever 545 is located below the connecting base. The engaging connecting rod 544 is slidably connected to the connecting base.

[0082] Furthermore, the transfer and pressing mechanism 5 also includes a displacement sensor 59. The displacement sensor 59 is electrically connected to the control mechanism. The displacement sensor 59 is mounted on the adapter frame 56. The displacement sensor 59 is adapted to detect the displacement of the connecting base and feed the detection result back to the control mechanism.

[0083] When the positioning fixture, after completing the connecting rod welding, is transferred to the transfer station, it carries the assembled upper cover assembly 81. Within the same upper cover assembly 81, the upper cover 811, sector gear 812, bearing 814, and connecting rod 815 can be considered as a single unit; that is, during the transfer of the upper cover assembly 81, the upper cover 811, sector gear 812, bearing 814, and connecting rod 815 will not accidentally separate. The large gear of the upper gear 813 is positioned between the upper cover 811 and the sector gear 812, and the small gear of the upper gear 813 meshes with the sector gear 812. Therefore, during the transfer of the upper cover assembly 81, there is a risk that the upper gear 813 may detach from the upper cover 811.

[0084] The working principle of the transfer and pressing mechanism 5 is as follows: When the positioning fixture that has completed the connecting rod welding is transferred to the transfer station, the control mechanism drives the second pneumatic finger 53 to move directly above the main positioning slot 241 of the positioning fixture via the third drive module 52. The control mechanism then drives the adapter frame 56 to descend via the third drive module 52, causing the second pneumatic finger 53, the engagement assembly 54, the abutment assembly 55, and the vacuum suction cup 58 to descend as well. This causes the vacuum suction cup 58 to abut against the top surface of the upper cover 811, the eccentric rod 8151 of the upper cover assembly 81 to be positioned in the slot of the lever 545 of the engagement assembly 54, and the second abutment rod 553 at the lower end of the abutment assembly 55 to abut against the top surface of the upper cover 811. The third elastic element 555 of the abutment assembly 55 is in a compressed state. During this period, the abutment drive module 551 and the upper limit plate 554 are spaced apart, meaning that the connecting frame 552 can slide freely on the adapter frame 56.

[0085] Because the positioning fixture is equipped with a C-shaped limiting block 27, the position and angle of the eccentric rod 8151 transferred to the transfer station are consistent. Therefore, when the drive end of the engagement drive module 541 rotates and resets to the initial position, the slot of the lever 545 can smoothly engage with the eccentric rod 8151 on the transfer station.

[0086] Subsequently, the third drive module 52 stops driving the adapter 56 to descend, and the control mechanism drives the second pneumatic finger 53 to clamp the upper cover assembly 81 placed in the main positioning groove 241. Specifically, the two first clamping blocks 531 provided on the second pneumatic finger 53 effectively clamp the lower edge protrusions on both sides of the upper cover 811; the two second clamping blocks 532 provided on the second pneumatic finger 53 effectively limit the two sides of the upper gear 813 to prevent the upper gear 813 from disengaging from the upper cover 811. The upper gear 813 is placed in the mating notch of the horizontal limiting part of the second clamping block 532, and is positioned above the lower part of the horizontal limiting part of the second clamping block 532. The sidewall of the mating notch of the horizontal limiting part abuts against the outer periphery of the upper gear 813 to limit the upper gear 813 in the horizontal direction. The lower part of the horizontal limiting part of the second clamping block 532 can limit the upper gear 813 in the vertical direction.

[0087] After the second pneumatic finger 53 grips the upper cover assembly 81, the control mechanism drives the second pneumatic finger 53 via the third drive module 52 to transfer the upper cover assembly 81 directly above the lifting assembly 62. Simultaneously with the transfer and pressing mechanism 5 transferring the upper cover assembly 81, the control mechanism controls the stopping position of the tray 7 located directly above the lifting assembly 62 via the lifting assembly 62. The tray 7 carries the lower cover assembly 82. The upper cover assembly 81, positioned directly above the lifting assembly 62, is positioned opposite the lower cover assembly 82 placed on the tray 7.

[0088] Subsequently, the control mechanism drives the second pneumatic finger 53 to descend via the third drive module 52, so that the upper cover assembly 81 held by the second pneumatic finger 53 is partially inserted into the lower cover assembly 82, and at the same time, the lower end face of the large gear of the upper gear 813 abuts against the upper end face of the lower gear 822. At this time, the large gear of the upper gear 813 and the lower gear 822 are not yet meshed, the upper cover 811 and the lower cover 821 are spaced apart, and the drive end of the second pneumatic finger 53 is spaced apart from the lower cover 821.

[0089] The aforementioned partial insertions include: partial insertion between the axial center hole of the upper gear 813 and the rotating shaft located in the inner cavity of the lower cover 821; and partial insertion between the lower end of the rotating shaft of the sector gear 812 and the assembly hole located in the inner cavity of the lower cover 821 (e.g., Figure 20 (As shown).

[0090] Subsequently, the control mechanism drives the second pneumatic finger 53 to open, so that the second pneumatic finger 53 separates from the upper cover assembly 81; at the same time, the control mechanism controls the vacuum suction cup 58 to stop suction through the second suction device, so that the vacuum suction cup 58 no longer adheres to the upper cover 811.

[0091] The control mechanism then drives the toggle block 545 to actuate the eccentric rod 8151 via the meshing drive module 541. The eccentric rod 8151 drives the upper gear 813 to rotate via the sector gear 812. When the teeth of the upper gear 813 are aligned with the tooth grooves of the lower gear 822, the third elastic element 555 returns to its original position. Under the action of the third elastic element 555, the second abutment rod 553 drives the upper gear 813 downward, so that the upper gear 813 meshes with the lower gear 822. Simultaneously with the third elastic element 555 driving the second abutment rod 553 downward, the third elastic element 555 also drives the connecting base of the connecting frame 552 downward, thereby causing the displacement sensor 59 to detect the downward displacement of the connecting base. The displacement sensor 59 feeds back the detection result to the control mechanism. Based on this detection result, the control mechanism determines that the upper gear 813 meshes with the lower gear 822.

[0092] After the large gear of the upper gear 813 meshes with the lower gear 822, the control mechanism controls the drive end of the abutment drive module 551 to move downward, so that the upper limit plate 554 abuts against the adapter frame 56. At this time, the connecting frame 552 cannot slide on the adapter frame 56. Subsequently, the control mechanism drives the adapter frame 56 to descend through the third drive module 52, so that the second abutment rod 553 presses down on the upper cover 811, thereby pressing the upper cover assembly 81 completely onto the lower cover assembly 82 to obtain the electric actuator 8.

[0093] After the electric actuator 8 is assembled, the control mechanism drives the adapter 56 to reset via the third drive module 52, so that the second pneumatic finger 53, engagement component 54, abutment component 55 and vacuum suction cup 58 are moved away from the lifting component 62.

[0094] Please see Figure 21 As shown, the conveying mechanism 6 includes a conveyor belt 61, a lifting assembly 62, a first sensor 63, and a stopper 64. The lifting assembly 62, the first sensor 63, and the stopper 64 are electrically connected to the control mechanism. There are two conveyor belts 61, arranged parallel and spaced apart. The conveyor frame of the conveyor belt 61 extends along a second horizontal direction and is mounted on the top of the main frame 1 via corresponding conveyor mounting blocks 611. The drive motor of the conveyor belt 61 is adapted to be electrically connected to the control mechanism. The top surface of the conveyor belt 61 is the conveying top surface. The top surfaces of the two conveyor belts 61 are adapted to contact the bottom surface of the same tray 7 respectively, and drive the tray 7 to move along the second horizontal direction by friction. The top of the tray 7 has a receiving groove for accommodating the lower cover assembly 82.

[0095] The lifting assembly 62 is vertically positioned between the two conveyor belts 61. The lower end of the lifting assembly 62 is a fixed end connected to the main frame 1. A first sensor 63 is located on the top of the main frame 1, on the side of the conveyor belt 61 furthest from the lifting assembly 62. In this embodiment, the first sensor 63 is a photoelectric sensor, suitable for detecting whether the tray 7 being conveyed on the conveyor belt 61 has moved directly above the lifting assembly 62.

[0096] A stopper 64 is positioned between two conveyor belts 61. The fixed end of the stopper 64 is mounted on the conveyor frame of the conveyor belts 61. The stopper 64 is adapted to control the tray 7 to stop when it flows to a position directly above the lifting assembly 62. The upper end of the lifting assembly 62 is the drive end, adapted to drive the tray 7 to contact or separate from the top surface of the conveyor belts 61 when the stopper 64 controls the tray 7 to stop.

[0097] In this embodiment, the lifting assembly 62 includes a lifting cylinder and a lifting frame. The lifting cylinder is electrically connected to the control mechanism. The lifting cylinder is vertically arranged. The lower end of the lifting cylinder is a fixed end, connected to the main frame 1. The upper end of the lifting cylinder is a driving end, connected to the lifting frame. The lifting frame is positioned above the lifting cylinder. The lower end of the lifting frame is slidably connected to the main frame 1 to ensure that the lifting frame can be raised and lowered smoothly. The top of the lifting frame is provided with a pin, which is adapted to be inserted into a socket on the tray 7.

[0098] Furthermore, the conveying mechanism 6 also includes a limiting block 65 disposed on the top of the main frame 1. The limiting block 65 is disposed on the top of the main frame 1 and located on the side of the conveyor belt 61 away from the lifting assembly 62. The limiting portion of the limiting block 65 is positioned above the tray 7. When the tray 7 separates from the top surface of the conveyor belt 61, the limiting portion of the limiting block 65 is adapted to abut against the tray 7 to limit the tray 7 in the vertical direction.

[0099] The working principle of the conveyor mechanism 6 is as follows: When the first sensor 63 detects that the tray 7 being conveyed on the conveyor belt 61 has moved to directly above the lifting assembly 62, the first sensor 63 feeds back the detection result to the control mechanism; then the control mechanism controls the drive end of the stopper 64 to move upward so that the drive end of the stopper 64 is placed in front of the tray 7 and abuts against the front side wall of the tray 7, that is, the stopper 64 stops the tray 7.

[0100] After the stopper 64 stops the pallet 7, the control mechanism drives the lifting frame upward via the lifting cylinder, so that the lifting frame contacts the bottom surface of the pallet 7, and the pin on the top of the lifting frame inserts into the hole on the pallet 7. The lifting cylinder drives the pallet 7 upward via the lifting frame until the pallet 7 abuts against the limiting part of the limiting block 65 above it. At this time, the pallet 7 separates from the top surface of the conveyor belt 61, that is, the pallet 7 is in a stationary state.

[0101] When the pallet 7 is in a stationary state, the transfer and pressing mechanism 5 can transfer the cover assembly 81 to directly above the lifting assembly 62 and perform subsequent pressing work.

[0102] After the transfer and pressing mechanism 5 completes the pressing process, the control mechanism controls the lifting assembly 62 and the stop device 64 to release the pallet 7. Specifically, the control mechanism lowers the lifting cylinder and drive the lifting frame to bring the pallet 7 back into contact with the top surface of the conveyor belt 61, and separates the pallet 7 from the lifting frame. The control mechanism then lowers the drive end of the stop device 64 to separate it from the lifting frame. Afterward, the transfer mechanism 6 transports the pallet 7 carrying the electric actuator 8 to the subsequent quality inspection station.

[0103] In this embodiment, the working principle of the assembly device is as follows: The robotic arm places the new bearing 814 into the second receiving slot 374.

[0104] The worker places the assembled lower cover assembly 82 onto the tray 7, with the opening of the lower cover 821 facing upwards. The tray 7 is then placed on the conveyor mechanism 6 for transfer. When the tray 7 carrying the lower cover assembly 82 moves to directly above the lifting assembly 62, the control mechanism, through the cooperation of the lifting assembly 62, the first sensor 63, and the stop device 64, keeps the tray 7 in a stationary state, awaiting the subsequent pressing operation by the transfer and pressing mechanism 5.

[0105] When the unloaded positioning fixture is transferred to the loading station, the operator places the various components of the top cover assembly 81 onto the positioning fixture to complete the loading process. At this time, the top cover 811 placed on the positioning fixture has its opening facing downwards.

[0106] The control mechanism drives the multi-station turntable 2 to rotate, so that the positioning fixture that has completed the loading work moves to the bearing pressing station. After that, the multi-station turntable 2 stops rotating. The control mechanism then drives the first pressing mechanism 3 to perform the bearing pressing work.

[0107] After the bearing press-fitting is completed, the control mechanism drives the multi-station turntable 2 to rotate, so that the positioning fixture that completed the bearing press-fitting work moves to the connecting rod press-fitting station. After that, the multi-station turntable 2 stops rotating. At the same time, the control mechanism drives the robotic arm to place the new bearing 814 into the second receiving groove 374.

[0108] The control mechanism drives the second pressing mechanism 4 to perform the linkage pressing operation.

[0109] After the connecting rod press-fitting is completed, the control mechanism drives the multi-station turntable 2 to rotate, so that the positioning fixture that completed the connecting rod press-fitting is transferred to the connecting rod welding station. After that, the multi-station turntable 2 stops rotating. The control mechanism then drives the welding mechanism to perform the connecting rod welding work.

[0110] After the connecting rod welding is completed, the control mechanism drives the multi-station turntable 2 to rotate, so that the positioning fixture that has completed the connecting rod welding is transferred to the transfer station. After that, the multi-station turntable 2 stops rotating. The control mechanism drives the transfer pressing mechanism 5 to transfer and press the upper cover assembly 81 placed on the positioning fixture onto the lower cover assembly 82.

[0111] This embodiment achieves efficient assembly of the electric actuator through the cooperation of a multi-station turntable, a first pressing mechanism, a second pressing mechanism, a transfer pressing mechanism, a conveying mechanism, and a pallet. This effectively reduces the time and cost of manual operation, improves work efficiency, and lowers assembly difficulty. The first pressing mechanism allows the bearing to be pressed into the upper cover. The second pressing mechanism, in cooperation with the positioning fixture, allows the connecting rod to be pressed onto the shaft of the sector gear. The multi-station turntable, the first pressing mechanism, the second pressing mechanism, and the welding mechanism work together to achieve efficient assembly of the upper cover assembly. The transfer pressing mechanism, the pallet, and the lifting assembly work together to press the upper cover assembly onto the lower cover assembly.

[0112] Example 2 The difference between this embodiment and Embodiment 1 is that the top of the main frame 1 is provided with at least six stations, including a material loading station, a bearing pressing station, a wiping station, a connecting rod pressing station, a connecting rod welding station, and a transfer station.

[0113] In this embodiment, the material loading station, bearing pressing station, wiping station, connecting rod pressing station, connecting rod welding station, and transfer station are distributed sequentially around the multi-station turntable 2.

[0114] In this embodiment, the top of the turntable body 22 is provided with six positioning clamps at intervals. The six positioning clamps are distributed sequentially along the rotation direction of the multi-station turntable 2, and are suitable for being distributed relative to the workstations on the main frame 1.

[0115] The assembly unit also includes a wiping mechanism (not shown in the figure). The wiping mechanism is located on top of the main frame 1 and is electrically connected to the control mechanism. The wiping mechanism is positioned at the wiping station. The wiping mechanism includes a robotic arm and a non-woven fabric.

[0116] When the positioning fixture that has completed the bearing press-fitting work moves to the wiping station, the control mechanism can control the robotic arm to wipe the exterior of the top cover 811.

[0117] Specifically, after the bearing 814 is pressed onto the upper cover 811, some of the grease in the bearing 814 may overflow, i.e., spill onto the outside of the upper cover 811. The robotic arm uses a non-woven cloth to wipe the outside of the upper cover 811 to remove the overflowing grease, so as to prevent the grease on the outside of the upper cover 811 from interfering with subsequent pressing and welding work.

[0118] In some embodiments, the wiping mechanism further includes a storage box and a waste box, both mounted on the main frame 1. The robotic arm can discard soiled non-woven fabric into the waste box. The robotic arm then retrieves clean non-woven fabric through the storage box to ensure effective wiping.

[0119] The robotic arm is existing technology, so it will not be described in detail.

[0120] This embodiment incorporates a wiping mechanism to effectively remove the lubricating grease from the outside of the top cover.

[0121] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An assembly device for an electric actuator, characterized in that, Includes a main frame (1) and a multi-station turntable (2) that is vertically and rotatably mounted on top of the main frame (1); The workstations set on the top of the main frame (1) include a material feeding station, a bearing pressing station, a connecting rod pressing station, a connecting rod welding station and a transfer station, which are arranged sequentially around the periphery of the multi-station turntable (2). The top of the main frame (1) is provided with a first pressing mechanism (3) placed at the bearing pressing station, a second pressing mechanism (4) placed at the connecting rod pressing station, and a welding mechanism placed at the connecting rod welding station. The top of the main frame (1) is provided with a conveying mechanism (6) and a transfer pressing mechanism (5) extending along the first horizontal direction. The conveying mechanism (6) is spaced apart from the multi-station turntable (2); the transfer pressing mechanism (5) is located between the conveying mechanism (6) and the multi-station turntable (2); The conveying mechanism (6) carries the conveying lower cover assembly (82) via the tray (7); the conveying mechanism (6) is provided with a lifting assembly (62) located below the tray (7), which is suitable for controlling the tray (7) to move or stay; The control mechanism provided on the main frame (1) is adapted to control the transfer pressing mechanism (5) to transfer and press the upper cover assembly (81) transferred to the transfer station onto the lower cover assembly (82) in the tray (7) when the tray (7) is in a stationary state; The transfer and pressing mechanism (5) includes a second gantry (51), a third drive module (52), a second pneumatic finger (53), an engagement component (54), and an abutment component (55). The second gantry (51) is disposed on the top of the main frame (1) and located between the multi-station turntable (2) and the conveying mechanism (6); The fixed end of the second pneumatic finger (53) is mounted on the top crossbeam of the second gantry (51) via the third drive module (52); the drive end of the second pneumatic finger (53) is adapted to clamp the top cover assembly (81). The third drive module (52) is adapted to drive the second pneumatic finger (53) to transfer the upper cover assembly (81) on the multi-station turntable (2) to the tray (7); The fixed end of the engagement component (54) is disposed on the drive end of the third drive module (52). The drive end of the engagement component (54) is provided with a paddle (545). The slot on the paddle (545) is adapted to cooperate with the eccentric rod (8151) on the connecting rod (815). When the upper cover assembly (81) is placed on the lower cover assembly (82), the engagement component (54) is adapted to indirectly drive the gear on the upper cover assembly (81) to rotate through the paddle (545) so that the gear on the upper cover assembly (81) meshes with the gear on the lower cover assembly (82). The abutting component (55) is vertically arranged, with its upper end connected to the driving end of the third driving module (52), and its lower end adapted to abut against the top surface of the upper cover component (81); the third driving module (52) is adapted to drive the abutting component (55) to descend when the gear on the upper cover component (81) meshes with the gear on the lower cover component (82), so that the upper cover component (81) is pressed onto the lower cover component (82); The upper cover assembly (81) includes an upper cover (811), a sector gear (812), an upper gear (813), a bearing (814), and a connecting rod (815). The upper cover (811) is a hollow cavity with an open lower end. The sector gear (812) and the upper gear (813) are both located inside the upper cover (811). The upper end of the rotating shaft of the sector gear (812) is connected to the bearing mounting hole on the upper cover (811) through the bearing (814). The rotating shaft of the sector gear (812) extends upward to the outside of the upper cover (811); the upper gear (813) is a double-layer gear, including a large gear and a small gear arranged sequentially from top to bottom; the small gear of the upper gear (813) meshes with the sector gear (812); the connecting rod (815) is located above the upper cover (811); one end of the connecting rod (815) is connected to the rotating shaft of the sector gear (812), and the other end is provided with an eccentric rod (8151). The lower cover assembly (82) includes a lower cover (821), a lower gear (822), and a motor; the lower cover (821) is a hollow cavity with an open top; the lower gear (822) is placed in the inner cavity of the lower cover (821), and the lower end of the shaft of the lower gear (822) is rotatably connected to the lower cover (821); the lower gear (822) is adapted to mesh with the large gear of the upper gear (813).

2. The assembly device according to claim 1, characterized in that, The multi-station turntable (2) includes a turntable drive module (21) and a turntable body (22). The bottom of the turntable body (22) is mounted on the main frame (1) via the turntable drive module (21); the turntable body (22) is horizontally positioned and placed above the main frame (1); The top of the turntable body (22) is provided with a positioning clamp, which is adapted to be distributed relative to the workstation on the main frame (1) under the drive of the turntable drive module (21); The positioning fixture includes a positioning base plate (23), a main positioning component (24), and an auxiliary positioning component (25); the positioning base plate (23) is installed on the top of the turntable body (22), and the main positioning component (24) and the auxiliary positioning component (25) are spaced apart on the top of the positioning base plate (23); The top of the main positioning component (24) is provided with a main positioning groove (241) for accommodating the upper cover assembly (81) and a connecting rod positioning groove (242) for accommodating the connecting rod (815); the main positioning groove (241) is provided with a C-shaped limiting block (27) for limiting the sector gear (812). A support spring (26) is connected between the main positioning component (24) and the positioning base plate (23); the lower end of the main positioning component (24) passes through the positioning base plate (23) and the turntable body (22) in sequence, and extends to the outside of the turntable body (22); the lower end face of the main positioning component (24) is adapted to abut against the second support seat (44) on the second pressing mechanism (4) when the second pressing mechanism (4) performs linkage pressing; The top of the auxiliary positioning member (25) is provided with an auxiliary positioning groove (251) for accommodating the top cover (811).

3. The assembly device according to claim 1, characterized in that, The first pressing mechanism (3) includes a first transfer assembly and a first pressing assembly respectively disposed on the top of the main frame (1); The first transfer assembly includes a first gantry (31) and a first drive module (32); The first gantry (31) is disposed on the top of the main frame (1) and is located between the multi-station turntable (2) and the first pressing assembly; The fixed end of the first drive module (32) is set on the top crossbeam of the first gantry (31); the drive end of the first drive module (32) is provided with a first pneumatic finger (33) for clamping the top cover (811); the first drive module (32) is adapted to drive the first pneumatic finger (33) to transfer the top cover (811) to the multi-station turntable (2) or the first pressing assembly; The first pressing assembly includes a first press (34), a bearing head (35), and a first support base (36); The first press (34) is mounted on top of the main frame (1); The bearing head (35) is connected to the drive end of the first press (34); The first support base (36) is mounted on the first frame of the first press (34) and is located below the bearing head (35). The top of the first support base (36) is provided with a first receiving groove (361) for receiving the upper cover (811). A support rod (37) is vertically provided in the first receiving groove (361). The bottom of the support rod (37) is connected to the first frame of the first press (34). The top of the support rod (37) is provided with a second receiving groove (374) for accommodating the bearing (814).

4. The assembly device according to claim 3, characterized in that, The first support base (36) is a liftable elastic support base; the first receiving groove (361) is provided with a first positioning hole (362) that cooperates with the upper cover (811). A first abutting rod (38) is vertically arranged on the drive end of the first press (34); the first abutting rod (38) is spaced apart from the bearing pressure head (35), and the first abutting rod (38) is adapted to abut against the top surface of the first support seat (36); The support rod (37) includes a rod body (371) and a first elastic element (372); The rod (371) is vertically arranged, and its lower end is connected to the first base plate of the first support (36). A bearing positioning sleeve (373) is sleeved on the outer periphery of its upper end. The inner hole of the upper end of the bearing positioning sleeve (373) and the top surface of the rod (371) form the second receiving groove (374). The first elastic element (372) is sleeved on the rod (371), and the upper and lower ends of the first elastic element (372) abut against the rod (371) and the bearing positioning sleeve (373) respectively. The rod (371) is vertically provided with a limiting groove (375) that cooperates with the bearing positioning sleeve (373).

5. The assembly device according to claim 3, characterized in that, The fixed end of the first pneumatic finger (33) is provided with a positioning rod (39); The positioning rod (39) includes a plug (391) and a second elastic element (392). The insertion rod (391) is vertically arranged, and its upper end is slidably inserted through the fixed end of the first pneumatic finger (33) and extends beyond the fixed end of the first pneumatic finger (33). The top of the insertion rod (391) is provided with a limiting cover plate (393), which is positioned above the fixed end of the first pneumatic finger (33). The lower end of the insert rod (391) is adapted to be inserted into the bearing mounting hole of the upper cover (811) or into the inner ring of the bearing (814); a limiting ring (394) is provided on the lower middle outer peripheral wall of the insert rod (391), and the bottom of the limiting ring (394) is adapted to be spaced apart from the top surface of the upper cover (811). The second elastic element (392) is sleeved on the insert rod (391) and is positioned between the fixed end of the first pneumatic finger (33) and the limiting ring (394).

6. The assembly device according to claim 1, characterized in that, The second pressing mechanism (4) includes a second press (41), a second drive module (42), a connecting rod press head (43), and a second support base (44). The second press (41) is mounted on top of the main frame (1); The fixed end of the second drive module (42) is connected to the drive end of the second press (41); the drive end of the second drive module (42) is connected to the upper end of the connecting rod press head (43); The bottom of the connecting rod pressure head (43) is provided with an air hole (431) for adsorbing the connecting rod (815); the middle section of the connecting rod pressure head (43) is provided with an air pipe connector that communicates with the air hole (431), and the air pipe connector is suitable for connecting to the first air extraction device. The bottom of the connecting rod pressure head (43) is provided with a relief groove (432) to avoid the eccentric rod (8151) on the connecting rod (815).

7. The assembly device according to claim 1, characterized in that, The abutment component (55) includes an abutment drive module (551), a connecting frame (552), and a second abutment rod (553); The upper end of the abutting drive module (551) is a fixed end, which is set on the drive end of the third drive module (52), and the lower end of the abutting drive module (551) is a drive end. The connecting frame (552) is positioned below the driving end of the third driving module (52); the upper end of the connecting frame (552) is slidably inserted through the driving end of the third driving module (52) and connected to the upper limit plate (554); a third elastic element (555) is provided between the lower end of the connecting frame (552) and the driving end of the third driving module (52). The second abutment rod (553) is vertically disposed at the bottom of the connecting frame (552) and is adapted to abut against the top surface of the upper cover assembly (81); The upper limit plate (554) is positioned below the driving end of the abutment drive module (551); the abutment drive module (551) is adapted to drive the upper limit plate (554) to descend so that the upper limit plate (554) abuts against the driving end of the third drive module (52).

8. The assembly device according to claim 1, characterized in that, The conveying mechanism (6) includes a conveyor belt (61), the lifting assembly (62), a first sensor (63), and a stopper (64). There are two conveyor belts (61), which are parallel and spaced apart; the conveyor frame of the conveyor belt (61) is installed on the main frame (1) through the corresponding conveyor mounting block (611); the conveyor belt (61) is adapted to convey the tray (7) placed on the top surface of the two conveyor belts (61) in the second horizontal direction. The lifting assembly (62) is vertically arranged and placed between the two conveyor belts (61); the lower end of the lifting assembly (62) is a fixed end and is connected to the main frame (1); The first sensor (63) is disposed on the top of the main frame (1) and located on the side of the conveyor belt (61) away from the lifting assembly (62); the first sensor (63) is adapted to detect whether the tray (7) conveyed on the conveyor belt (61) has flowed to directly above the lifting assembly (62). The stopper (64) is placed between the two conveyor belts (61); the fixed end of the stopper (64) is mounted on the conveyor frame of the conveyor belt (61); the stopper (64) is adapted to control the tray (7) to stop when the tray (7) flows to the top of the lifting assembly (62); The upper end of the lifting assembly (62) is the driving end, which is adapted to drive the tray (7) to contact or separate from the top surface of the conveyor belt (61) when the stopper (64) controls the tray (7) to stop.

9. The assembly device according to claim 8, characterized in that, The transmission mechanism (6) also includes a limiting block (65) disposed on the top of the main frame (1). The limiting block (65) is disposed on the top of the main frame (1) and located on the side of the conveyor belt (61) away from the lifting assembly (62); the limiting part of the limiting block (65) is placed above the tray (7) and is adapted to abut against the tray (7) when the tray (7) is separated from the top surface of the conveyor belt (61). The top of the lifting assembly (62) is provided with a pin suitable for insertion into the tray (7).

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