A new energy electric drive assembly oil seal press production line and oil seal press device

Abstract

The present invention discloses a new energy electric drive assembly oil seal pressing production line and an oil seal pressing device thereof. The oil seal pressing device is used for pressing a left oil seal and a right oil seal onto the electric drive assembly respectively, comprising a support frame, a pressing frame arranged on the support frame, a lifting mechanism arranged on the support frame for lifting the electric drive assembly, a pressing mechanism which can be moved up and down and is arranged on the support frame above the lifting mechanism, and a left pressing mechanism and a right pressing mechanism which are relatively arranged on the pressing frame. The present application specifically defines the device composition of the oil seal pressing production line, and realizes automatic pressing of the oil seal through the mutual cooperation between the various devices. The overall equipment has high functional integration, good stability, good adaptability, and is compatible with more products.

Description

Technical Field

[0001] The present invention belongs to the field of oil seal pressing equipment, and in particular relates to a new energy electric drive assembly oil seal pressing production line and an oil seal pressing device thereof. Background Art

[0002] The oil seal is one of the important components of the drive motor. It mainly meets the IP67 inspection standard of the drive motor. (The drive motor meets IP67 when the overall leakage of the motor is less than the system setting value. Otherwise, the motor is judged to be leaking, posing a safety hazard and cannot be installed on the vehicle). The outer ring of the oil seal and the oil seal mounting hole on the front cover of the motor are tightly fitted with a small gap to achieve the purpose of sealing. Due to processing errors and installation errors during the assembly process, the oil seal is difficult to assemble, which can easily cause deformation and damage to the oil seal, affecting the performance of the product.

[0003] At present, the assembly of oil seals is mainly completed through manual work. The nylon sleeve is put on the output shaft and the nylon sleeve is manually knocked in the horizontal direction until the oil seal is completely pressed in. There are generally defects such as high labor intensity, high physical exertion and low work efficiency. Since the size and direction of the force are difficult to control and the position of the sleeve cannot be fixed, the oil seal is prone to displacement during the striking process, resulting in assembly difficulties, easy damage to the oil seal, and even failure of the seal. Therefore, the use of suitable auxiliary tooling in the oil seal installation process can improve work efficiency and reduce the risk of oil seal damage.

[0004] The existing new energy motor oil seal installation work is mainly completed manually. The sleeve is installed on the motor output shaft, and then force is applied along the axial direction until it is fully assembled. The labor intensity is high and it is difficult to complete batch assembly tasks, which limits work efficiency. At the same time, the sleeve installation position cannot be guaranteed, and the size and direction of the applied force are difficult to control, resulting in difficulty in assembling the oil seal, seriously affecting the assembly efficiency and quality of the product. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new energy electric drive assembly oil seal press production line and an oil seal press device thereof.

[0006] The present invention adopts the following technical solutions:

[0007] An oil seal press-fitting device is used to press-fit a left oil seal and a right oil seal onto an electric drive assembly, respectively. The device comprises a support frame, a press-fitting frame mounted on the support frame, a lifting mechanism mounted on the support frame for lifting the electric drive assembly, a pressing mechanism mounted on the support frame above the lifting mechanism and movable up and down, and a left press-fitting mechanism and a right press-fitting mechanism mounted on the press-fitting frame relative to each other.

[0008] The left pressing mechanism includes a left positioning seat provided on the pressing frame, a left positioning shaft provided on the left positioning seat and extending in a direction close to the right pressing mechanism, a left pressing member movably provided on the left positioning shaft, a left compression spring sleeved on the left positioning shaft and connected to the left positioning seat at one end and the left pressing member at the other end, a left mounting groove provided with a front end of the left pressing member extending inwardly for accommodating an oil seal, and a left limiting member provided on the pressing frame and capable of fixing the position of the left pressing member;

[0009] The right press-fitting mechanism includes a press-fitting cylinder disposed on the press-fitting frame opposite to the left positioning seat, a right positioning seat connected to the front end of the press-fitting cylinder, a right positioning shaft disposed on the right positioning seat and extending in a direction close to the left press-fitting mechanism, a right press-fitting member movably disposed on the right positioning shaft, a right compression spring sleeved on the right positioning shaft, one end of the spring connected to the right positioning seat and the other end connected to the right press-fitting member, and a right mounting groove disposed on the front end of the right press-fitting member and extending inwardly for accommodating an oil seal.

[0010] When preparing to press-fit the oil seal, first place the left oil seal and the right oil seal into the left installation slot and the right installation slot respectively. The lifting mechanism drives the tray carrying the electric drive assembly to be lifted to the position between the left and right press-fit parts, and then controls the pressing mechanism to descend to press the electric drive assembly.

[0011] When the right oil seal is press-fitted, the left limiter works to fix the position of the left press-fitting part, and the press-fitting cylinder works to drive the right press-fitting part to move toward the electric drive assembly so that the right oil seal is press-fitted at the predetermined installation position, thus completing the press-fitting of the right oil seal;

[0012] When the left oil seal is press-fitted, the left limit part is reset, and the pressing cylinder continues to extend, squeezing the left pressing part so that the left oil seal is press-fitted in the predetermined installation position, completing the press-fitting of the left oil seal; after the press-fitting of the left oil seal is completed, the lifting mechanism and the pressing mechanism are reset, so that the electric drive assembly with the left and right oil seals press-fitted moves to the next workstation along with the pallet.

[0013] Preferably, the left press-fitting part includes a left movable sleeve movably mounted on the left positioning shaft, a left connecting shaft arranged at the front end of the left movable sleeve, and a left press-fitting head arranged at the front end of the left connecting shaft; the left mounting groove is arranged in the left press-fitting head; the left oil seal sleeve is arranged in the left mounting groove, and its front end is against the front end of the left press-fitting head.

[0014] Preferably, the left limit member includes a left limit block provided on the press-fitting frame and movable to the rear end of the left press-fitting head to abut against it, and a left limit cylinder provided on the press-fitting frame and connected to drive the left limit block to move, and the left limit block is formed with a clearance groove extending inward from its side for the left connecting shaft to pass through; when the right oil seal is press-fitted, the left limit cylinder drives the left limit block to move close to the left press-fitting head so that it abuts against the rear end of the left press-fitting head, thereby fixing the position of the left press-fitting member.

[0015] Preferably, the pressing mechanism includes a pressing frame arranged on the supporting frame, a movable plate which can move up and down relative to the pressing frame, a pressing cylinder arranged on the pressing frame and connected to drive the movable plate to move up and down, a connecting plate connected to the lower end of the movable plate, a plurality of elastic pressing rods arranged at intervals on the connecting plate opposite to the jacking mechanism, and a horizontal driving member connected between the pressing frame and the pressing frame to drive the pressing frame to move back and forth horizontally.

[0016] Preferably, the lifting mechanism includes a plurality of lifting cylinders spaced apart on the support frame for lifting the tray carrying the electric drive assembly.

[0017] A new energy electric drive assembly oil seal pressing production line, comprising a conveying device for conveying a pallet carrying an electric drive assembly, a movable oil spraying device for spraying oil on a pre-installation position of the electric drive assembly oil seal, a feeding device for stacking oil seals, an oil seal pressing device as described in any of the above items, a loading device arranged on one side of the feeding device for conveying the oil seal to be installed on a left clamping head and a right clamping head, and a grasping device arranged on a support frame for clamping the oil seal on the feeding device and placing it on the loading device.

[0018] Preferably, the loading device includes a loading rack arranged on one side of the feeding device opposite to the oil seal pressing device, a positioning seat movably arranged on the loading rack, a positioning plate movable up and down on the positioning seat, two clamping seats movable toward or away from each other and arranged on the positioning plate for clamping the oil seal, a first driving member arranged on the loading rack and connected to drive the positioning seat to move, a second driving member arranged on the positioning seat and connected to drive the positioning plate to move up and down, and two third driving members arranged on the positioning plate and respectively connected to and driven to move relative to the clamping seat.

[0019] Preferably, the clamping seat includes a clamping part that can be flipped 90° for clamping the oil seal, a connecting cylinder connected to the clamping part, a flipping cylinder connected to and driving the connecting cylinder to flip, and a mounting plate arranged on the positioning plate for installing the flipping cylinder. The flipping cylinder can drive the clamping part to flip to a horizontal state and be arranged in the same direction as the left press-fitting part or the right press-fitting part; the third driving part is connected to the mounting plate.

[0020] Preferably, the gripping device includes a connecting beam arranged on the support frame, a gripping mechanism movably arranged on the connecting beam, a reversing mechanism arranged on the connecting beam that can flip the oil seal 180°, and a moving mechanism arranged on the connecting beam and connected to and driving the gripping mechanism to move. The gripping mechanism includes a sliding cylinder movably arranged on the connecting beam and a clamping air claw arranged at the front end of the sliding cylinder. The moving mechanism drives the clamping air claw to move to the feeding device to clamp the oil seal and move the clamped oil seal to be opposite to the clamping part; the flipping cylinder drives the clamping part to flip and be set in a vertical state to receive the oil seal on the clamping air claw.

[0021] Preferably, the reversing mechanism includes a reversing plate arranged on the connecting beam, a reversing cylinder arranged on the reversing plate and a pneumatic clamp arranged at the front end of the reversing cylinder. The reversing cylinder drives the pneumatic clamp to flip 180°, so that the upside-down oil seal is flipped to the correct installation position.

[0022] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects: by defining the structure of the oil seal press-fitting device and distributing the left and right oil seals, the present invention can effectively improve the assembly quality of the oil seal of the electric drive assembly, while also facilitating maintenance and replacement; and by using the oil seal press-fitting method defined in the present application, the position and preload force of each oil seal can be more accurately controlled, thereby improving the overall assembly quality of the electric drive assembly, reducing assembly errors, and increasing the operating stability and service life of the electric drive assembly;

[0023] The device composition of the oil seal pressing production line is specifically limited. Through the mutual cooperation between the various devices, the automatic pressing of the oil seal is realized. The overall equipment has high functional integration, good stability, good adaptability, and is compatible with more products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the oil seal press assembly production line Figure 1 ;

[0025] Figure 2 Schematic diagram of the oil seal press assembly production line Figure 2 ;

[0026] Figure 3 It is a schematic diagram of the structure of the feeding device and the grabbing device;

[0027] Figure 4 It is a structural diagram of the right press-fitting mechanism;

[0028] Figure 5 It is a structural diagram of the feeding device;

[0029] Figure 6 It is a structural diagram of the left press-fitting mechanism;

[0030] In the figure, 1- conveying device, 2- oil spraying device, 3- feeding device, 4- oil seal pressing device, 5- feeding device, 6- grabbing device, 7- oil seal, 21- bracket, 22- three-axis moving platform, 23- oil spraying rack, 24- oil spraying head, 31- feeding rack, 32- rotating material tray, 33- stacking material rods, 34- rotating motor, 41- supporting rack, 42- pressing rack, 43- lifting mechanism, 44- pressing Mechanism, 441-pressing frame, 442-moving plate, 443-pressing cylinder, 444-connecting plate, 445-elastic pressing rod, 446-transverse driving member, 45-left pressing mechanism, 451-left positioning seat, 452-left positioning shaft, 453-left pressing member, 4531-left moving sleeve, 4532-left connecting shaft, 4533-left pressing head, 454-left compression spring, 455-left mounting slot, 456-left limiter, 4561-left limiter block, 4562-left limiter cylinder, 4563-allowing slot, 46-right press-fitting mechanism, 461-press-fitting cylinder, 462-right positioning seat, 463-right positioning shaft, 464-right press-fitting part, 465-right compression spring, 466-right mounting slot, 51-loading rack, 52-positioning seat, 53-positioning plate, 54-clamping seat, 541-clamping part, 54 2-connecting cylinder, 543-turning cylinder, 544-mounting plate, 55-first driving member, 56-second driving member, 57-third driving member, 61-connecting beam, 62-grabbing mechanism, 621-slide plate, 622-slide cylinder, 623-dust suction member, 624-gripping claw, 63-reversing mechanism, 631-reversing plate, 632-reversing cylinder, 633-pneumatic clamp, 64-moving mechanism. DETAILED DESCRIPTION

[0031] The present invention is further described below through specific embodiments.

[0032] like Figures 1-6 As shown, the present invention discloses a new energy electric drive assembly oil seal pressing production line, comprising a conveying device 1 for conveying a pallet carrying an electric drive assembly, an oil spraying device 2 that can move to spray oil on a pre-installation position of the electric drive assembly oil seal, a feeding device 3 for stacking oil seals, an oil seal pressing device 4 for pressing a left oil seal and a right oil seal on the electric drive assembly respectively, a loading device 5 arranged on one side of the feeding device 3 for conveying the oil seal to be installed on the oil seal pressing device 4, and a grasping device 6 for clamping the oil seal on the feeding device 3 and placing it on the loading device 5; wherein, in order to distinguish the installation position of the oil seal 7 in this application, it is further limited in terms of direction, but the structure of the left oil seal and the right oil seal is the same.

[0033] The oil injection device 2 is arranged at the front end of the conveying device 1, and includes a bracket 21, a three-axis mobile platform 22 arranged on the bracket 21 opposite to the conveying device 1, an oil injection rack 23 arranged at the lower end of the mobile platform 22, and two oil injection heads 24 relatively arranged on the oil injection rack 23 opposite to the two oil seal pre-installation positions of the electric drive assembly. Among them, the three-axis mobile platform 22 can be driven by the oil cylinder to realize X, Y, and Z-direction movement along the X, Y, and Z-direction slide rails, thereby driving the oil injection rack 23 to realize X, Y, and Z-direction movement to spray oil on the pre-installation position of the oil seal; further, the oil injection device 2 can also be provided with a lifting mechanism that can be used to lift the pallet, so as to lift the pallet carrying the electric drive assembly to the designated oil injection position. After the oil injection head 24 completes the oil injection work, the lifting mechanism is reset, and the conveying device 1 continues to drive the pallet forward.

[0034] The feeding device 3 is arranged on one side of the conveying device 1 and is used to stack the oil seals to be pressed. It includes a feeding rack 31 arranged on one side of the conveying device 1, a rotating material tray 32 rotatably arranged on the feeding rack 31, a plurality of stacking material rods 33 for multi-purpose stacked oil seals circumferentially distributed on the rotating material tray 32, and a rotating motor 34 arranged on the feeding rack 31 and connected to and driving the rotating material tray 32 to rotate; when working, the rotating motor 34 can drive the rotating material tray 32 to rotate one of the stacking material rods 33 to the material picking position so that the grabbing device 6 can grab it.

[0035] The oil seal pressing device 4 is arranged at the rear section of the conveying device 1, and includes a support frame 41 opposite to the bracket 21, a pressing frame 42 arranged on the support frame 41, a lifting mechanism 43 arranged on the support frame 41 for lifting the tray with the electric drive assembly, a pressing mechanism 44 which can be moved up and down and is arranged on the support frame 41 above the lifting mechanism 43, and a left pressing mechanism 45 and a right pressing mechanism 46 which are relatively arranged on the pressing frame 42.

[0036] The pressing mechanism 44 includes a pressing frame 441 arranged on the support frame 41, a movable plate 442 that can move up and down relative to the pressing frame 441, a pressing cylinder 443 arranged on the pressing frame 441 and connected to and driving the movable plate 442 to move up and down, a connecting plate 444 connected to the lower end of the movable plate 442, a plurality of elastic pressing rods 445 arranged at intervals on the connecting plate 444 opposite to the jacking mechanism 43, and a horizontal driving member 446 connected between the pressing frame 441 and the pressing frame 42 to drive the pressing frame 42 to move back and forth horizontally, wherein the horizontal driving member 446 can realize the horizontal movement of the pressing frame 42 by means of a cylinder cooperating with a slide rail.

[0037] The lifting mechanism 43 includes a plurality of lifting cylinders spaced apart on the support frame 41 for lifting the tray carrying the electric drive assembly.

[0038] The left pressing mechanism 45 includes a left positioning seat 451 arranged on the pressing frame 42, a left positioning shaft 452 arranged on the left positioning seat 451 and extending in a direction close to the right pressing mechanism 46, a left pressing part 453 movably arranged on the left positioning shaft 452, a left compression spring 454 sleeved on the left positioning shaft 452 and connected to the left positioning seat 451 at one end and the left pressing part 453 at the other end, a left mounting groove 455 provided with a front end of the left pressing part 453 extending inward for placing the oil seal 7, and a left limiting part 456 arranged on the pressing frame 42 for fixing the position of the left pressing part 453.

[0039] The left pressing part 453 includes a left movable sleeve 4531 movably mounted on the left positioning shaft 452, a left connecting shaft 4532 arranged at the front end of the left movable sleeve 4531, and a left pressing head 4533 arranged at the front end of the left connecting shaft 4532; wherein, the left mounting groove 455 is arranged in the left pressing head 4533; the left oil seal sleeve is arranged in the left mounting groove 455, and its front end is against the front end of the left pressing head 4533.

[0040] The left limit member 456 includes a left limit block 4561 provided on the press-fitting frame 42 and movable to the rear end of the left press-fitting head 4533 to abut against it, and a left limit cylinder 4562 provided on the press-fitting frame 42 and connected to and driving the left limit block 4561 to move, and the left limit block 4561 is formed with a makeshift groove 4563 extending inward from its side for the left connecting shaft 4532 to pass through; when the right oil seal is press-fitted, the left limit cylinder 4562 drives the left limit block 4561 to move close to the left press-fitting head 4533 so that it abuts against the rear end of the left press-fitting head 4533, thereby fixing the position of the left press-fitting member 453 and preventing the left press-fitting member 453 from being affected by the left compression spring 454, thereby providing a support for the press-fitting of the right oil seal.

[0041] The right pressing mechanism 46 includes a pressing cylinder 461 arranged on the pressing frame 42 and opposite to the left positioning seat 451, a right positioning seat 462 connected to the front end of the pressing cylinder 461, a right positioning shaft 463 arranged on the right positioning seat 462 and extending in the direction close to the left pressing mechanism 45, a right pressing part 464 movably arranged on the right positioning shaft 463, a right compression spring 465 sleeved on the right positioning shaft 463 and connected to the right positioning seat 462 at one end and the right pressing part 464 at the other end, and a right mounting groove 466 arranged at the front end of the right pressing part 464 and extending inward for placing the oil seal 7; wherein, the structure of the right pressing part 464 is the same as that of the left pressing part 453, and its specific structure will not be further described here; a discharge solenoid valve is provided in the pressing cylinder 461 to control the movement speed and direction of the pressing cylinder 461 to avoid excessive pressing of the oil seal.

[0042] The feeding device 5 includes a feeding frame 51 arranged on one side of the feeding device 3 opposite to the oil seal pressing device 4, a positioning seat 52 movably arranged on the feeding frame 51, a positioning plate 53 arranged on the positioning seat 52 which can be moved up and down, two clamping seats 54 which can be moved toward or away from each other and are arranged on the positioning plate 53 for clamping the oil seal 7, a first driving member 55 arranged on the feeding frame 51 and connected to drive the positioning seat 52 to move, a second driving member 56 arranged on the positioning seat 52 and connected to drive the positioning plate 53 to move up and down, and two third driving members 57 arranged on the positioning plate 53 and respectively connected to and driven to move relative to the clamping seat 54; wherein the first driving member 55, the second driving member 56, and the third driving member 57 can cooperate with each other in the form of a hydraulic cylinder driving a slide rail, or a servo motor and a screw nut pair to realize the movement of the clamping seat 54 in the X, Y, and Z directions, so as to respectively insert the oil seal 7 clamped on the two clamping seats 54 into the left mounting groove 455 and the right mounting groove 466 in the oil seal pressing device 4.

[0043] The clamping seat 54 includes a clamping portion 541 that can be flipped 90° for clamping the oil seal 7, a connecting cylinder 542 connected to the clamping portion 541, a flipping cylinder 543 connected to and driving the connecting cylinder 542 to flip, and a mounting plate 544 arranged on the positioning plate 53 for mounting the flipping cylinder 543, wherein the third driving member 57 is connected to the relative mounting plate 544; specifically, the flipping cylinder 543 can drive the clamping portion 541 to flip to a horizontal state and be arranged in the same direction as the left press-fitting member 55 or the right press-fitting member 56, so as to cooperate with the connecting cylinder 542 to embed the oil seal 7 on the clamping portion 541 into the left mounting groove 455 or the right mounting groove 466.

[0044] The grabbing device 6 includes a connecting beam 61 provided on the support frame 41, a grabbing mechanism 62 movably provided on the connecting beam 61, a reversing mechanism 63 provided on the connecting beam 61 and capable of flipping the oil seal 7 180°, and a moving mechanism 64 provided on the connecting beam 61 and connected to and driving the grabbing mechanism 62 to move. The grabbing mechanism 62 grabs the oil seals stacked on the stacked material rods 33 and cooperates with the moving mechanism 64 to move the grabbed oil seals 7 to be opposite to the clamping portion 541 arranged in a vertical state. The moving mechanism 64 can realize the lateral back and forth movement of the grabbing mechanism 62 by means of a servo motor in conjunction with a screw-nut pair.

[0045] The grabbing mechanism 62 includes a slide 621 movably arranged on the connecting beam 61, a slide cylinder 622 and a dust collecting part 623 spaced apart on the left and right sides of the slide 621, and a clamping claw 624 arranged at the front end of the slide cylinder 622. When working, the moving mechanism 64 drives the clamping claw 624 to move to the feeding device 3 to clamp the oil seal 7 and move the clamped oil seal 7 to be opposite to the clamping part 541; the flipping cylinder 543 drives the clamping part 541 to flip and be set in a vertical state to receive the oil seal on the clamping claw 624.

[0046] The reversing mechanism 63 includes a reversing plate 631 arranged on the connecting beam 61, a reversing cylinder 632 arranged on the reversing plate 631, and a pneumatic clamp 633 arranged at the front end of the reversing cylinder 632. The reversing cylinder 632 drives the pneumatic clamp 633 to flip 180°, so that the upside-down oil seal is flipped to the correct installation position.

[0047] The method for pressing oil seals on the above oil seal pressing production line specifically includes the following processes:

[0048] When the electric drive assembly is spraying oil, the tray carrying the electric drive assembly is transported to the spraying station by the conveying device 1. The lifting mechanism lifts the tray to the specified spraying height. The three-axis mobile platform 22 drives the spraying frame 23 to move in the X, Y, and Z directions, so that the two spray heads 24 spray oil at the two oil seal pre-installation positions on the electric drive assembly respectively.

[0049] When the oil seal is being grabbed and transferred, the moving mechanism 64 drives the clamping claw 624 to clamp the oil seal on the material taking position and move it to be opposite to the clamping part 541. At this time, the flipping cylinder 543 drives the clamping part 541 to be arranged in a vertical state and coaxially opposite to the oil seal on the clamping claw 624. The connecting cylinder 542 controls the clamping part 541 to move upward so that the oil seal on the clamping claw 624 is transferred to the clamping part 541; the moving mechanism 64 continues to work to move the dust collecting part 623 to be opposite to the oil seal 7 on the clamping part 541 for dust collection; then the flipping cylinder 543 drives the clamping part 541 to flip 90 degrees to be horizontal and arranged in the same direction as the left press-fitting part 453 or the right press-fitting part 464;

[0050] When the oil seal is ready for press-fitting, the two clamping seats 54 cooperate with the first driving member 55, the second driving member 56 and the third driving member 57 to respectively embed the oil seal 7 on the two clamping parts 541 into the left mounting groove 455 and the right mounting groove 466; the lifting mechanism 43 drives the tray carrying the electric drive assembly to be lifted to a position between the left press-fitting member 453 and the right press-fitting member 464, and the transverse moving member 446 first controls the press-fitting frame 42 to move the left press-fitting head 4533 close to the electric drive assembly, so that the left oil seal is embedded in the predetermined installation position; the pressing cylinder 443 works to drive the multiple elastic pressure rods 445 to descend and press the electric drive assembly;

[0051] When the right oil seal is press-fitted, the left limiting cylinder 4562 drives the left limiting block 4561 to move to abut against the rear end surface of the left press-fitting head 4533, fixing the position of the left press-fitting part 453. The press-fitting cylinder 461 drives the right press-fitting part 464 to move toward the electric drive assembly, press-fitting the right oil seal to the predetermined installation position, completing the press-fitting of the right oil seal.

[0052] When the left oil seal is press-fitted, the left limit piece 456 is reset, and the pressing cylinder 461 continues to extend, squeezing the left pressing piece 453, so that the left oil seal is press-fitted on the predetermined installation position, completing the press-fitting of the left oil seal; after the press-fitting of the left oil seal is completed, the lifting mechanism 43 and the pressing mechanism 44 are reset, so that the electric drive assembly with the left oil seal and the right oil seal press-fitted is moved to the next workstation along with the pallet.

[0053] This application specifically defines the device composition of the oil seal pressing production line. Through the mutual cooperation between the various devices, the automatic pressing of the oil seal is realized. The overall equipment has high functional integration, good stability, good adaptability, and is compatible with more products.

[0054] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification should still fall within the scope of the patent of the present invention.

Claims

1. An oil seal press-fitting device for press-fitting a left oil seal and a right oil seal onto an electric drive assembly, characterized in that: It includes a support frame, a press-fitting frame arranged on the support frame, a lifting mechanism arranged on the support frame for lifting the electric drive assembly, a pressing mechanism arranged on the support frame above the lifting mechanism and movable up and down, and a left press-fitting mechanism and a right press-fitting mechanism arranged on the press-fitting frame relative to each other; The left pressing mechanism includes a left positioning seat provided on the pressing frame, a left positioning shaft provided on the left positioning seat and extending in a direction close to the right pressing mechanism, a left pressing member movably provided on the left positioning shaft, a left compression spring sleeved on the left positioning shaft and connected to the left positioning seat at one end and the left pressing member at the other end, a left mounting groove provided with a front end of the left pressing member extending inwardly for accommodating an oil seal, and a left limiting member provided on the pressing frame and capable of fixing the position of the left pressing member; The right press-fitting mechanism includes a press-fitting cylinder disposed on the press-fitting frame opposite to the left positioning seat, a right positioning seat connected to the front end of the press-fitting cylinder, a right positioning shaft disposed on the right positioning seat and extending in a direction close to the left press-fitting mechanism, a right press-fitting member movably disposed on the right positioning shaft, a right compression spring sleeved on the right positioning shaft, one end of the spring connected to the right positioning seat and the other end connected to the right press-fitting member, and a right mounting groove disposed on the front end of the right press-fitting member and extending inwardly for accommodating an oil seal. When preparing to press-fit the oil seal, first place the left oil seal and the right oil seal into the left installation slot and the right installation slot respectively. The lifting mechanism drives the tray carrying the electric drive assembly to be lifted to the position between the left and right press-fit parts, and then controls the pressing mechanism to descend to press the electric drive assembly. When the right oil seal is press-fitted, the left limiter works to fix the position of the left press-fitting part, and the press-fitting cylinder works to drive the right press-fitting part to move toward the electric drive assembly so that the right oil seal is press-fitted at the predetermined installation position, thus completing the press-fitting of the right oil seal; When the left oil seal is press-fitted, the left limiter is reset, and the press-fitting cylinder continues to extend, squeezing the left press-fitting part so that the left oil seal is press-fitted to the predetermined installation position, completing the press-fitting of the left oil seal. After the press-fitting of the left oil seal is completed, the lifting mechanism and the pressing mechanism are reset, so that the electric drive assembly with the left and right oil seals press-fitted thereon moves to the next station along with the pallet. The left press-fitting part includes a left movable sleeve movably mounted on the left positioning shaft, a left connecting shaft disposed at the front end of the left movable sleeve, and a left press-fitting head disposed at the front end of the left connecting shaft; the left mounting groove is disposed in the left press-fitting head; the left oil seal sleeve is disposed in the left mounting groove, and its front end abuts against the front end of the left press-fitting head; The left limit piece includes a left limit block arranged on the press-fitting frame and movable to the rear end of the left press-fitting head to abut against it, and a left limit cylinder arranged on the press-fitting frame and connected to the press-fitting frame and driving the left limit block to move. The left limit block is formed with a clearance groove extending inward from its side for the left connecting shaft to pass through; when the right oil seal is press-fitted, the left limit cylinder drives the left limit block to move close to the left press-fitting head so that it abuts against the rear end of the left press-fitting head, thereby fixing the position of the left press-fitting piece.

2. The oil seal press-fitting device according to claim 1, characterized in that: The pressing mechanism includes a pressing frame arranged on the supporting frame, a movable plate that can move up and down relative to the pressing frame, a pressing cylinder arranged on the pressing frame and connected to drive the movable plate to move up and down, a connecting plate connected to the lower end of the movable plate, a plurality of elastic pressing rods arranged at intervals on the connecting plate opposite to the jacking mechanism, and a horizontal driving member connected between the pressing frame and the pressing frame to drive the pressing frame to move back and forth horizontally.

3. The oil seal press-fitting device according to claim 1, characterized in that: The lifting mechanism includes a plurality of lifting cylinders spaced apart on a support frame for lifting a tray carrying an electric drive assembly.

4. A new energy electric drive assembly oil seal press assembly production line, characterized by: It includes a conveying device for conveying a pallet carrying an electric drive assembly, an oil spraying device that can be moved to spray oil on the pre-installation position of the oil seal of the electric drive assembly, a feeding device for stacking oil seals, an oil seal pressing device as described in any one of claims 1 to 3, a loading device arranged on one side of the feeding device to transport the oil seal to be installed on the left clamping head and the right clamping head, and a grasping device arranged on the support frame to clamp the oil seal on the feeding device and place it on the loading device.

5. The new energy electric drive assembly oil seal press assembly production line according to claim 4 is characterized by: The loading device includes a loading rack arranged on one side of the feeding device opposite to the oil seal pressing device, a positioning seat movably arranged on the loading rack, a positioning plate arranged on the positioning seat which can be moved up and down, two clamping seats arranged on the positioning plate which can be moved toward or away from each other for clamping the oil seal, a first driving member arranged on the loading rack and connected to drive the positioning seat to move, a second driving member arranged on the positioning seat and connected to drive the positioning plate to move up and down, and two third driving members arranged on the positioning plate which are respectively connected to and drive the relative movement of the clamping seat.

6. The new energy electric drive assembly oil seal press assembly production line according to claim 5 is characterized by: The clamping seat includes a clamping part that can be flipped 90° for clamping the oil seal, a connecting cylinder connected to the clamping part, a flipping cylinder connected to and driving the connecting cylinder to flip, and a mounting plate arranged on the positioning plate for mounting the flipping cylinder. The flipping cylinder can drive the clamping part to flip to a horizontal state and be arranged in the same direction as the left press-fit part or the right press-fit part; the third driving part is connected to the mounting plate.

7. The new energy electric drive assembly oil seal press assembly production line according to claim 6, characterized in that: The grabbing device includes a connecting beam arranged on a support frame, a grabbing mechanism movably arranged on the connecting beam, a reversing mechanism arranged on the connecting beam that can flip the oil seal 180°, and a moving mechanism arranged on the connecting beam that is connected to and drives the grabbing mechanism to move. The grabbing mechanism includes a sliding cylinder movably arranged on the connecting beam and a clamping air claw arranged at the front end of the sliding cylinder. The moving mechanism drives the clamping air claw to move to the feeding device to clamp the oil seal and move the clamped oil seal to be opposite to the clamping part; the flipping cylinder drives the clamping part to flip and be set in a vertical state to receive the oil seal on the clamping air claw.

8. The new energy electric drive assembly oil seal press assembly production line according to claim 7 is characterized by: The reversing mechanism includes a reversing plate arranged on the connecting beam, a reversing cylinder arranged on the reversing plate and a pneumatic clamping jaw arranged at the front end of the reversing cylinder. The reversing cylinder drives the pneumatic clamping jaw to flip 180 degrees, so that the upside-down oil seal is flipped to the correct installation position.

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