Hub motor end cover, flywheel, circlip assembly machine

Abstract

The present invention provides a hub motor end cover, flywheel, and snap ring assembly machine, belonging to the field of mechanical technology. This assembly machine includes a frame, on which a first conveyor line and a second conveyor line are horizontally arranged. On the first conveyor line and the second conveyor line, there are respectively a first tooling for horizontally supporting and positioning the end cover and a second tooling for horizontally supporting and positioning the flywheel. The frame is also provided with a tightening mechanism and a snap ring installation mechanism, and the tightening mechanism and the snap ring installation mechanism are sequentially distributed along the conveying direction of the first conveyor line; the tightening mechanism is used to grab the flywheel and screw the flywheel onto the tube body of the corresponding end cover; the snap ring installation mechanism includes a pressing-in mechanism and a horizontally arranged snap ring conveyor line. The snap ring conveyor line includes an outlet, and a correction mechanism for correcting the position of the snap ring is arranged at the outlet. The pressing-in mechanism is used to grab the corrected snap ring and press the snap ring into the snap ring groove of the corresponding end cover. The present invention can realize the automatic assembly of the end cover, flywheel, and snap ring.

Description

Technical Field

[0001] The present invention belongs to the technical field of machinery, and relates to a hub motor assembly machine, in particular to an assembly machine for hub motor end covers, flywheels and snap rings. Background Art

[0002] A hub motor is a motor designed by integrating the "power system, transmission system, and braking system" of a vehicle.

[0003] A flywheel is an important component of a hub motor. It is installed on the hub motor end cover. Specifically, as Figure 1 shown, the end cover 1 includes a main body in the shape of a round basin. A circle of flange holes axially penetrating through the main body are provided at the edge of the main body. A circular guide portion is coaxially formed on the top of the main body. A pipe body 1a is coaxially formed at the bottom of the main body; the flywheel 2 includes an annular body and a circle of teeth 2a formed outside the annular body. Among them, the annular body is sleeved on the pipe body 1a and the two are threadedly connected. A snap ring groove for installing the snap ring 3 is provided on the outer wall of the pipe body 1a, and the snap ring 3 is pressed on the end face of the flywheel 2 away from the main body to prevent the flywheel from coming off.

[0004] Currently, the assembly of the flywheel, end cover and snap ring is completely realized manually. Not only is the efficiency low, but also a large amount of manpower is invested, resulting in high labor costs. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems existing in the prior art and propose an assembly machine for hub motor end covers, flywheels and snap rings. The technical problem to be solved is how to automatically assemble the flywheel and snap ring onto the end cover.

[0006] The purpose of the present invention can be achieved by the following technical solutions: An assembly machine for hub motor end covers, flywheels and snap rings includes a frame. It is characterized in that a first conveyor line and a second conveyor line are horizontally arranged on the frame. A first fixture for horizontally supporting and positioning the end cover and a second fixture for horizontally supporting and positioning the flywheel are respectively running on the first conveyor line and the second conveyor line. There are multiple first fixtures and second fixtures, which are respectively distributed along the conveying directions of the first conveyor line and the second conveyor line; a screwing mechanism and a snap ring installation mechanism are also provided on the frame, and the screwing mechanism and the snap ring installation mechanism are sequentially distributed along the conveying direction of the first conveyor line; the screwing mechanism is used to grab the flywheel and screw the flywheel onto the pipe body of the corresponding end cover; the snap ring installation mechanism includes a pressing-in mechanism and a horizontally arranged snap ring conveyor line. The snap ring conveyor line includes an outlet, and a correction mechanism for correcting the position of the snap ring is provided at the outlet. The pressing-in mechanism is used to grab the corrected snap ring and press the snap ring into the snap ring groove of the corresponding end cover.

[0007] The conveyor line 1, conveyor line 2 and circlip conveyor line are set up to automatically feed the end cover, flywheel and circlip respectively, and facilitate the screwing mechanism and pressing mechanism to automatically install the flywheel and circlip in sequence. The whole process can achieve fully automated and assembly-line operation except for the initial placement of parts. This not only has high efficiency, but also can reduce the labor input and lower the labor cost.

[0008] In the above-mentioned hub motor end cover, flywheel and circlip assembly machine, the conveyor line 1 includes a driving mechanism 1 and a U-shaped conveyor track 1, and the conveyor line 2 includes a driving mechanism 2 and a U-shaped conveyor track 2. The conveyor track 1 and the conveyor track 2 are coaxially arranged, and the circlip conveyor line and the conveyor track 2 are respectively arranged on the outside and inside of the conveyor track 1; a plurality of tooling 1 are arranged in a U-shape on the conveyor track 1, and the two tooling 1 in the same row and adjacent in position are in head-to-tail contact. A plurality of tooling 2 are arranged in a U-shape on the conveyor track 2, and the two tooling 2 in the same row and adjacent in position are in head-to-tail contact. The driving mechanism 1 and the driving mechanism 2 are used to respectively push the tooling 1 and the tooling 2 to operate; a vacancy is reserved on both the conveyor track 1 and the conveyor track 2 for the tooling 1 and the tooling 2 to operate respectively. The conveyor line 1 and the conveyor line 2 are both U-shaped as a whole, and the circlip conveyor line and the conveyor line 2 are respectively arranged on the outside and inside of the conveyor line 1, which can effectively reduce the distance between each component, make the whole structure more compact and reduce the space occupation.

[0009] In the above-mentioned hub motor end cover, flywheel and circlip assembly machine, a bracket is fixed on the frame. The bracket includes a plate-shaped part arranged vertically, and the length of the plate-shaped part extends along the distribution direction of the conveyor track 1 and the conveyor track 2. The screwing mechanism and the pressing mechanism are respectively arranged on both sides of the width of the plate-shaped part to further reduce the distance between each component, make the whole structure more compact and further reduce the space occupation.

[0010] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the tightening mechanism includes a vertically arranged power column, a base slidably arranged on the plate-shaped part, and a translation mechanism for driving the base to reciprocate horizontally along the length direction of the plate-shaped part. A power component for driving the power column to lift and rotate is provided on the base; a concave cavity for the flywheel to extend into is formed at the lower end of the power column. A circle of through holes is radially penetrated on the side wall of the concave cavity, and a glass bead spring for supporting the teeth of the flywheel is fixed in the through holes. A linkage mechanism for enabling the flywheel to rotate following the power column is provided between the flywheel and the power column. The usage process is as follows: The power column moves above the second conveying track, and then the power column moves downward to make the flywheel extend into the concave cavity. The glass bead spring is compressed and contracted to allow the teeth of the flywheel to pass through. After the teeth of the flywheel pass through, the glass bead spring extends and presses on the bottom wall of the teeth of the flywheel to support the flywheel upward to prevent it from falling. Then, the power column drives the flywheel to move onto the first conveying track and moves downward to sleave the flywheel onto the end cover tube body. Immediately afterwards, the power column rotates to screw the flywheel into the tube body. After the flywheel and the tube body are assembled, the power column moves upward, and the glass bead spring is compressed and contracted to allow the power column to smoothly disengage. The whole process is completely automatic, with the advantages of simple structure and stable operation.

[0011] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, a circle of support surfaces evenly distributed along the circumferential direction of the power column is formed in the concave cavity. The support surfaces are located above the glass bead springs and are used to press against the top walls of the teeth of the flywheel. The support surfaces and the glass bead springs cooperate to strengthen the axial positioning effect of the flywheel, ensure the stable progress of the screwing process, and further enhance the stability and convenience of using the assembly machine.

[0012] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the linkage mechanism includes a circle of tooth grooves opened on the inner wall of the concave cavity for the teeth of the flywheel to extend into. The shape and size of the tooth grooves match those of the teeth of the flywheel, and the lower end of the tooth grooves is open. With the above design, it has the advantages of simple structure and stable operation.

[0013] As another solution, in the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the linkage mechanism includes a circle of convex blocks formed on the inner wall of the concave cavity, and the convex blocks are used to insert into the gaps between adjacent teeth of the flywheel.

[0014] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, a circle of notches is opened on the side wall of the concave cavity to divide the lower end of the power column into a circle of arc blocks. The above-mentioned support surfaces and tooth grooves are provided on the inner side of each arc block, and the support surfaces are arc-shaped coaxial with the arc blocks. The setting of the notches not only facilitates the processing of the power column, but also can view the positioning state of the flywheel through the notches, further ensuring the stable operation of the assembly machine.

[0015] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the power component is a power head.

[0016] As another solution, in the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the power component includes a support base, a driving member fixed on the base and used to drive the support base to lift, and a motor fixed on the support base and used to drive the power column.

[0017] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the translation mechanism is a linear drive unit. The linear drive unit includes a slider and a guide rod. The guide rod is fixedly connected to the plate-shaped part, and the base is fixed on the slider.

[0018] As another solution, in the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the translation mechanism includes an electric push rod, and the main shaft of the electric push rod is fixedly connected to the base.

[0019] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the first driving mechanism includes a first driving member and a vertically arranged first push plate. There are four first push plates, which are respectively arranged at the four corners of the first conveying track. The number of the first driving member and the first push plate is the same and their positions correspond one by one. The first driving member is used to drive the corresponding first push plate to translate along the running direction of the corresponding first tooling. The first driving member is a cylinder or an electric push rod.

[0020] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the second driving mechanism includes a second driving member and a vertically arranged second push plate. There are four second push plates, which are respectively arranged at the four corners of the second conveying track. The number of the second driving member and the second push plate is the same and their positions correspond one by one. The second driving member is used to drive the corresponding second push plate to translate along the running direction of the corresponding second tooling. The second driving member is a cylinder or an electric push rod.

[0021] In the above-mentioned hub motor end cover, flywheel, and snap ring assembly machine, the correction mechanism includes a positioning frame fixed on the frame. A strip-shaped groove that is horizontally arranged and has a size matching that of the snap ring is formed on the top wall of the positioning frame. The length of the strip-shaped groove extends along the length direction of the plate-shaped part. One end of the strip-shaped groove is connected to the outlet of the snap ring conveying line, and the inner wall of the other end of the strip-shaped groove is an arc surface matching the snap ring. During use, the snap ring output from the outlet of the snap ring conveying line slides into the strip-shaped groove for position correction, and finally contacts the arc surface for limiting and further position adjustment, ensuring that the snap ring is accurately moved to the grasping position and guaranteeing the stable progress of subsequent operations.

[0022] In the above-mentioned hub motor end cover, flywheel, and circlip assembly machine, the circlip conveying line includes a support plate horizontally fixed on the machine frame and a support block fixed on the support plate. A conveying channel that is straight and facing the strip-shaped groove is formed between the support plate and the support block. The height of the conveying channel matches the thickness of the circlip, and the outlet of the conveying channel is the outlet of the circlip conveying line. A material pipe is vertically fixed on the support block. The material pipe communicates with the conveying channel through a material passing hole vertically penetrating the support block. The inner diameters of the material pipe and the material passing hole both match the outer diameter of the circlip. A driving member three and a driving plate are also provided on the support plate. The conveying channel is located between the driving plate and the strip-shaped groove, and one end of the driving plate extends into the conveying channel. The driving member three is used to push the driving plate to reciprocate horizontally along the length direction of the conveying channel. During use, multiple circlips are stacked up and down in the material pipe. The circlip at the bottom enters the conveying channel through the material hole under the action of gravity. Then, the driving member three drives the driving plate to move and push the circlip into the strip-shaped groove. The above process is repeated. Workers only need to put the circlips into the material pipe, and other processes are completely automatic. This not only has high efficiency but also saves labor input.

[0023] In the above-mentioned hub motor end cover, flywheel, and circlip assembly machine, a circular hole vertically penetrating the bottom wall of the strip-shaped groove is formed. The circular hole is coaxially arranged with the above-mentioned arc surface, and the inner diameter of the circular hole is larger than the inner diameter of the circlip but smaller than the outer diameter of the circlip. The calibration mechanism further includes a calibration rod coaxially arranged in the circular hole. The upper end of the calibration rod is a conical part matching the inner hole of the circlip, and the diameter of the conical part gradually increases downward. A driving member four for driving the calibration rod to move up and down is also fixed on the machine frame. During use, when the circlip is pressed on the arc surface and stays, the driving member four drives the calibration rod to move up so that the conical part extends into the circlip and jacks it up, so as to further calibrate the position of the circlip by using the taper of the conical part, thereby further enhancing the position accuracy of the circlip and making the subsequent installation more stable.

[0024] In the above-mentioned hub motor end cover, flywheel, and circlip assembly machine, the pressing-in mechanism includes a connecting seat slidably arranged on the plate-shaped part, a connecting frame slidably arranged on the connecting seat, a driving member five for driving the connecting seat to slide along the length direction of the plate-shaped part, and a driving member six for driving the connecting frame to move up and down. A material-grabbing structure for grabbing the calibrated circlip and a material-pressing structure for pressing the circlip on the material-grabbing structure into the circlip groove of the end cover are provided on the connecting frame. The pressing-in mechanism is divided into three parts: a sliding component, a material-grabbing structure, and a material-pressing structure, which is not only convenient for design but also can improve the operation stability.

[0025] In the above-mentioned hub motor end cover, flywheel, and retaining spring assembly machine, a mounting hole is vertically penetrated on the bottom wall of the strip groove, a round sleeve is inserted in the mounting hole, and the inner hole of the round sleeve is the above-mentioned round hole, and the positioning frame is also provided with a lifting structure for driving the round sleeve to rise and fall; the grabbing structure includes an expansion sleeve and a driving member seven, both of which are arranged on the connecting frame, the outer wall of the expansion sleeve matches the retaining spring, the upper end of the expansion sleeve is fixedly connected to the connecting frame, an outer support rod is vertically provided in the expansion sleeve, the upper end of the outer support rod extends out of the expansion sleeve and is connected to the driving member seven, the lower end of the expansion sleeve is matched with the outer support rod through a conical surface, and the driving member seven is used to drive the outer support rod to rise and fall, and the expansion sleeve can be moved to be coaxial with the correction rod. The usage process is as follows: the expansion sleeve moves to align with the correction rod and the outer support rod is pressed on the correction rod, then the expansion sleeve and the correction rod are moved down synchronously to press the retaining spring on the round sleeve. At this time, the expansion sleeve partially enters the inner hole of the retaining spring, then the round sleeve moves up to lift the retaining spring, and then the outer support rod moves up to make the expansion sleeve expand and hold the retaining spring tightly, then the expansion sleeve moves to the end cover position, during the operation of the pressing structure, the outer support rod moves down to make the expansion sleeve contract and loosen the retaining spring, ensuring that the retaining spring is smoothly inserted into the retaining spring groove of the end cover.

[0026] In the above-mentioned hub motor end cover, flywheel, and retaining ring assembly machine, the type of driving component four is a telescopic cylinder. In this way, in actual use, the outer support rod can directly force the correction rod to move down and reset, which facilitates the design and ensures the overall working stability.

[0027] In the aforementioned in-wheel motor end cap, flywheel, and retaining spring assembly machine, the pressing mechanism includes an extrusion frame and a drive element 8 for driving the extrusion frame upward and downward, with the drive element 8 being mounted on a connecting frame. The extrusion frame's bottom wall comprises a horizontally arranged pressure plate, which is vertically penetrated by a clearance hole for the lower end of the expansion sleeve. The pressure plate both pushes the retaining spring on the expansion sleeve into the retaining spring slot in the end cap and limits the upward movement of the retaining spring driven by the circular sleeve, ensuring that the retaining spring is moved into position all at once. In other words, in this application, the extrusion frame serves two purposes, simplifying the structure and facilitating assembly.

[0028] In the above-mentioned hub motor end cover, flywheel, and retaining spring assembly machine, the extrusion frame is roughly U-shaped, and there are two driving members 8 connected to both ends of the extrusion frame to provide a larger and more stable force to install the retaining spring.

[0029] In the aforementioned in-wheel motor end cap, flywheel, and circlip assembly machine, the feed tube comprises a vertically mounted, elastic circular tube with an open end. Multiple clamps are mounted and secured to the tube, distributed axially along the tube. The clamps allow for slight adjustments to the tube's inner diameter, adjusting the friction between the circlip and the tube, ensuring smooth and orderly circlip movement and further improving operational stability.

[0030] Compared with the existing technology, this hub motor end cover, flywheel, and circlip assembly machine has the following advantages:

[0031] 1. Set up conveyor line 1, conveyor line 2 and the circlip conveyor line to automatically feed the end cap, flywheel and circlip respectively, and facilitate the screwing mechanism and the pressing mechanism to automatically install the flywheel and circlip in sequence. The whole process can achieve fully automated and assembly-line operation except for the preliminary placement of parts. This not only improves efficiency but also reduces labor input and lowers labor costs.

[0032] 2. Both conveyor line 1 and conveyor line 2 are in a loop shape as a whole, and the circlip conveyor line and conveyor line 2 are respectively arranged on the outside and inside of conveyor line 1, which can effectively reduce the distance between parts, make the whole structure more compact and reduce space occupation.

[0033] 3. The driving part 4 drives the calibration rod to move upward so that the conical part extends into the circlip and jacks it up, in order to further calibrate the position of the circlip by using the taper of the conical part, thereby further strengthening the position accuracy of the circlip and enabling more stable subsequent installation.

[0034] 4. The pressing plate part is used to push the circlip on the expansion sleeve into the end cap circlip groove and also to limit the upward movement distance of the circlip driven by the round sleeve, so that the circlip moves into place at one time. That is, in this application, the extrusion frame has a dual-purpose effect, which simplifies the structure and facilitates assembly. Description of the Drawings

[0035] Figure 1 It is the connection structure of the end cap, flywheel and circlip.

[0036] Figure 2 It is the three-dimensional structure schematic diagram of the hub motor end cap, flywheel and circlip assembly machine.

[0037] Figure 3 It is the distribution structure schematic diagram of conveyor line 1, conveyor line 2 and the circlip conveyor line.

[0038] Figure 4 It is the structure schematic diagram of tooling 1.

[0039] Figure 5 It is the structure schematic diagram of tooling 2.

[0040] Figure 6 It is the three-dimensional structure schematic diagram of the connection between the power column and the flywheel.

[0041] Figure 7 It is the cross-sectional structure schematic diagram of the connection between the power column and the flywheel.

[0042] Figure 8 It is the structure schematic diagram of the pressing mechanism.

[0043] Figure 9 It is the three-dimensional structure schematic diagram of the circlip conveyor line.

[0044] Figure 10 It is the cross-sectional structure schematic diagram of the circlip conveyor line.

[0045] Figure 11 It is a three-dimensional structure schematic diagram of the material grabbing structure and the material pressing structure.

[0046] Figure 12 It is Figure 11 The enlarged structure schematic diagram of part A in

[0047] Figure 13 It is a sectional structure schematic diagram of the material grabbing structure and the material pressing structure.

[0048] In the figure, 1. end cover; 1a. pipe body; 2. flywheel; 2a. teeth; 3. snap ring; 4. frame; 5. conveyor line 1; 5a. conveyor track 1; 5b. push plate 1; 5c. universal ball; 6. conveyor line 2; 6a. conveyor track 2; 6b. push plate 2; 7. tooling 1; 7a. bottom plate; 7b. circular plate; 7c. positioning post 1; 8. tooling 2; 8a. positioning block; 8b. positioning post 2; 9. support; 9a. plate part; 10. power column; 10a. concave cavity; 10b. support surface; 10c. tooth groove; 10d. arc block; 11. base; 12. power component; 13. glass bead spring; 14. linear drive unit; 15. support plate; 16. support block; 17. conveying channel; 18. material pipe; 18a. round pipe; 18b. hoop; 19. drive part 3; 20. drive plate; 21. positioning frame; 21a. strip groove; 21b. arc surface; 22. calibration rod; 22a. cone part; 23. drive part 4; 24. connecting seat; 25. connecting frame; 26. drive part 5; 27. drive part 6; 28. round sleeve; 28a. round hole; 29. mounting plate; 30. drive part 9; 31. expansion sleeve; 32. drive part 7; 33. outer support rod; 34. extrusion frame; 34a. pressing plate part; 35. drive part 8. Detailed implementation mode

[0049] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0050] Embodiment 1

[0051] As Figure 2 shown, the hub motor end cover, flywheel, and snap ring assembly machine of the present invention includes a frame 4. A conveyor line 1 5 and a conveyor line 2 6 are horizontally arranged on the frame 4. Tooling 1 7 for horizontally supporting and positioning the end cover 1 and tooling 2 8 for horizontally supporting and positioning the flywheel 2 are respectively running on the conveyor line 1 5 and the conveyor line 2 6. There are multiple tooling 1 7 and tooling 2 8, and they are respectively distributed along the conveying directions of the conveyor line 1 5 and the conveyor line 2 6.

[0052] Specifically,

[0053] As Figure 3 andFigure 4 As shown in the figure, the first tooling 7 includes a horizontally arranged bottom plate 7a and a circular plate 7b horizontally arranged on the bottom plate 7a, and the circular plate 7b and the bottom plate 7a are coaxially arranged. The circular plate 7b is pressed on the bottom plate 7a and the two are fixedly connected. Preferably, the circular plate 7b and the bottom plate 7a are fixedly connected by screws. A circular groove matching the guide part of the end cover 1 is coaxially arranged on the top wall of the circular plate 7b, and a circle of positioning posts 7c matching the flange holes of the end cover 1 are vertically fixed on the edge of the circular plate 7b. During use, the edge of the end cover 1 is pressed on the circular plate 7b. At this time, each positioning post is inserted into one of the flange holes, and the guide part is inserted into the circular groove, so that the end cover 1 can only move up and down relative to the circular plate 7b.

[0054] As Figure 3 and Figure 5 shown in the figure, the second tooling 8 includes a horizontally arranged positioning block 8a. A positioning groove matching the annular body of the flywheel 2 is coaxially formed on the upper side of the positioning block 8a. Positioning posts 8b are vertically fixed on the positioning block 8a. There are at least two positioning posts 8b and they are evenly distributed along the circumferential direction of the annular body, and the positioning posts 8b match the gaps between two adjacent teeth 2a on the flywheel 2. During use, the teeth 2a of the flywheel 2 are pressed on the top wall of the positioning block 8a, the annular body of the flywheel 2 is inserted into the positioning groove, and the positioning posts 8b are inserted into one of the gaps, so that the flywheel 2 can only move up and down relative to the positioning block 8a.

[0055] As Figure 2 and Figure 8 shown in the figure, a tightening mechanism and a snap ring installation mechanism are further provided on the frame 4, and the tightening mechanism and the snap ring installation mechanism are sequentially distributed along the conveying direction of the first conveying line 5. Among them, the tightening mechanism is used to grab the flywheel 2 and screw the flywheel 2 onto the pipe body 1a of the corresponding end cover 1; the snap ring installation mechanism includes a pressing-in mechanism and a horizontally arranged snap ring conveying line. The snap ring conveying line includes an outlet, and a correction mechanism for correcting the position of the snap ring 3 is arranged at the outlet. The pressing-in mechanism is used to grab the corrected snap ring 3 and press the snap ring 3 into the snap ring groove of the corresponding end cover 1.

[0056] In this embodiment,

[0057] As Figure 3 shown in the figure, the first conveying line 5 includes a first driving mechanism and a U-shaped first conveying track 5a. A plurality of the first toolings 7 are arranged in a U-shaped layout on the first conveying track 5a, and two adjacent first toolings 7 are in head-to-tail contact. At this time, the two adjacent bottom plates 7a are in head-to-tail contact, and a vacancy is reserved on the first conveying track 5a for the operation of the first tooling 7. The first driving mechanism is used to push the first tooling 7 to operate.

[0058] The second conveyor line 6 includes a second driving mechanism and a second conveyor track 6a in a figure-eight shape. A plurality of second tooling fixtures 8 are arranged in a figure-eight pattern on the second conveyor track 6a, and adjacent second tooling fixtures 8 are in end-to-end contact. At this time, adjacent positioning blocks 8a are in end-to-end contact, and a vacant position is reserved on the second conveyor track 6a for the operation of the second tooling fixture 8. The second driving mechanism is used to push the second tooling fixture 8 to operate.

[0059] The first conveyor track 5a and the second conveyor track 6a are coaxially arranged, and the snap ring conveyor line and the second conveyor track 6a are respectively arranged on the outer side and the inner side of the first conveyor track 5a. This can effectively reduce the distance between each component, make the whole structure more compact, and reduce the space occupation. Further, a bracket 9 is fixed on the frame 4. The bracket 9 includes a plate-shaped part 9a arranged vertically. The length of the plate-shaped part 9a extends along the distribution direction of the first conveyor track 5a and the second conveyor track 6a. The screwing mechanism and the pressing mechanism are respectively arranged on both sides of the width of the plate-shaped part 9a to further reduce the distance between each component, make the whole structure more compact, and further reduce the space occupation.

[0060] The structure of the first driving mechanism is specifically as follows: It includes a first driving part and a vertically arranged first push plate 5b. There are four first push plates 5b and they are respectively arranged at the four corners of the first conveyor track 5a. The number of the first driving parts is the same as that of the first push plates 5b and their positions correspond one by one. The first driving part is used to drive the corresponding first push plate 5b to translate along the operation direction of the corresponding first tooling fixture 7. Among them, the first driving part is a cylinder or an electric push rod. Further, the first conveyor track 5a is surrounded by four strip-shaped segments. A flow strip is horizontally fixed in each strip-shaped segment, and the bottom plate 7a presses on the flow strip to ensure the stable and smooth sliding of the first tooling fixture 7. A plurality of universal balls 5c are fixed between adjacent strip-shaped segments to make the first tooling fixture 7 turn more smoothly.

[0061] The structure of the second driving mechanism is specifically as follows: It includes a second driving part and a vertically arranged second push plate 6b. There are four second push plates 6b and they are respectively arranged at the four corners of the second conveyor track 6a. The number of the second driving parts is the same as that of the second push plates 6b and their positions correspond one by one. The second driving part is used to drive the corresponding second push plate 6b to translate along the operation direction of the corresponding second tooling fixture 8. Among them, the second driving part is a cylinder or an electric push rod.

[0062] The structure of the screwing mechanism is as follows: As Figure 2 shown, it includes a vertically arranged power column 10, a base 11 slidably arranged on the plate-shaped part 9a, and a translation mechanism for driving the base 11 to reciprocate horizontally along the length direction of the plate-shaped part 9a. Among them, the base 11 is slidably connected to the plate-shaped part 9a through a guide rail-slider structure. Naturally, it is also possible that the base 11 is slidably connected to the plate-shaped part 9a through a chute-slider structure. As Figure 2 , Figure 6 and Figure 7As shown, a power component 12 is mounted on the base 11 to drive the power column 10 in both elevation and rotation. A cavity 10a is formed at the lower end of the power column 10, into which the flywheel 2 extends. Cavity 10a and power column 10 are coaxial. A circle of through-holes runs radially through the sidewalls of cavity 10a. Glass bead springs 13 are secured within these through-holes, supporting the teeth 2a of flywheel 2. A linkage mechanism is provided between flywheel 2 and power column 10, ensuring that flywheel 2 rotates with it. The usage process is as follows: the power column 10 moves to above the conveying track 2 6a, and then the power column 10 moves down to allow the flywheel 2 to extend into the concave cavity 10a, and the glass bead spring 13 is squeezed and contracted to allow the teeth 2a of the flywheel 2 to pass through. After the teeth 2a of the flywheel 2 pass through, the glass bead spring 13 extends and presses on the bottom wall of the teeth 2a of the flywheel 2 to support the flywheel 2 upward to prevent it from falling. Then the power column 10 drives the flywheel 2 to move to the conveying track 1 5a and moves down to allow the flywheel 2 to be inserted into the end cover 1 tube body 1a. Then the power column 10 rotates to allow the flywheel 2 to be screwed into the tube body 1a. After the flywheel 2 and the tube body 1a are assembled, the power column 10 moves up and the glass bead spring 13 is compressed and contracted to allow the power column 10 to be smoothly removed. The whole process is fully automatic and has the advantages of simple structure and stable operation.

[0063] Furthermore, cavity 10a is formed with support surfaces 10b evenly distributed along the circumference of power column 10. Support surfaces 10b are located above glass bead springs 13 and are used to press against the top walls of teeth 2a of flywheel 2. Support surfaces 10b and glass bead springs 13 cooperate to enhance the axial positioning of flywheel 2, ensuring a stable screw connection process and further enhancing the stability and convenience of the assembly machine.

[0064] The linkage mechanism has the following structure: it includes a circle of tooth grooves 10c provided on the inner wall of the cavity 10a and into which the teeth 2a of the flywheel 2 extend. The shape and size of the tooth grooves 10c match the teeth 2a of the flywheel 2, and the lower end of the tooth grooves 10c is open. To further explain, a circle of notches is provided on the side wall of the cavity 10a to divide the lower end of the power column 10 into a circle of arc blocks 10d. The inner side of each arc block 10d is provided with the above-mentioned support surface 10b and tooth grooves 10c, and the support surface 10b is in the shape of an arc coaxial with the arc block 10d. The provision of the notch notches not only facilitates the processing of the power column 10, but also allows the positioning status of the flywheel 2 to be checked through the notch, further ensuring the stable operation of the assembly machine. In actual products, two tooth grooves 10c are provided on the inner side of each arc block 10d.

[0065] The power component 12 is a power head, which is an existing product and can be obtained on the market.

[0066] The translation mechanism structure is as follows: a linear drive unit 14, which is an existing product, including a slider and a guide rod. The guide rod is fixedly connected to the plate-shaped portion 9a, and the base 11 is fixed on the slider.

[0067] The conveying line of the retaining ring 3 is as follows:Figure 3 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 3 , Figure 8 , Figure 9 and Figure 10 , it includes a support plate 15 horizontally fixed on the frame 4 and a support block 16 fixed on the support plate 15. A straight strip-shaped conveying channel 17 is formed between the support plate 15 and the support block 16, and the length of the conveying channel 17 extends along the length direction of the plate-shaped portion 9a. The height of the conveying channel 17 matches the thickness of the snap ring 3, that is, the conveying channel 17 can only accommodate one snap ring 3, and the outlet of the conveying channel 17 is the outlet of the snap ring 3 conveying line. As Figure 1 shown in Figure 1 , a material pipe 18 is vertically fixed on the support block 16. The material pipe 18 communicates with the conveying channel 17 through a material passing hole vertically penetrating through the support block 16. The material pipe 18 and the feeding hole are coaxially arranged, and the inner diameters of the material pipe 18 and the material passing hole both match the outer diameter of the snap ring 3, further ensuring that only one snap ring 3 enters the conveying channel 17 each time; a third driving member 19 and a driving plate 20 are also provided on the support plate 15. The conveying channel 17 is located between the driving plate 20 and the first conveying track 5a, and one end of the driving plate 20 extends into the conveying channel 17. The third driving member 19 is used to push the driving plate 20 to reciprocate horizontally along the length direction of the conveying channel 17. During use, multiple snap rings 3 are stacked up and down in the material pipe 18. The snap ring 3 at the bottom enters the conveying channel 17 through the material hole under the action of gravity. Then, the third driving member 19 drives the driving plate 20 to move to push out the snap ring 3. The above process is carried out in a cycle. Workers only need to put the snap rings 3 into the material pipe 18, and other processes are completely automatic, which not only has high efficiency but also can save labor input. In actual products, the driving plate 20 is located between the third driving member 19 and the conveying channel 17. The third driving member 19 is a cylinder, the cylinder block is fixed on the support plate 15, and the cylinder piston rod is fixedly connected to the driving plate 20. Naturally, it is also possible that the third driving member 19 is an oil cylinder or an electric push rod.

[0068] Further explanation, the material pipe 18 includes a circular pipe 18a vertically arranged and made of an elastic material. The elastic material can be a stainless steel material or a plastic material, and preferably the circular pipe 18a is made of a stainless steel material. One side of the circular pipe 18a is open, and a hoop 18b is sleeved and fixed on the circular pipe 18a. There are multiple hoops 18b distributed along the axial direction of the circular pipe 18a, which are used to slightly adjust the inner diameter of the circular pipe 18a to adjust the friction between the snap ring 3 and the circular pipe 18a, ensuring the smooth and orderly sliding of the snap ring 3 and further improving the working stability.

[0069] The calibration mechanism is as follows: It includes a positioning frame 21 fixed on the frame 4. A strip-shaped groove 21a that is horizontally arranged and has a size matching that of the snap ring 3 is formed on the top wall of the positioning frame 21. The length of the strip-shaped groove 21a extends along the length direction of the conveying channel 17. One end of the strip-shaped groove 21a is connected to the outlet of the conveying channel 17, and the inner wall of the other end of the strip-shaped groove 21a is an arc surface 21b matching the snap ring 3. During use, the snap ring 3 slides into the strip-shaped groove 21a through the conveying channel 17 and finally contacts and is limited by the arc surface 21b, ensuring that the snap ring 3 moves accurately to the grasping position and guaranteeing the stable progress of subsequent operations.

[0070] Further explanation, as Figure 9 and Figure 10 shown, a round hole 28a that is vertically penetrated is formed on the bottom wall of the strip-shaped groove 21a. The round hole 28a and the arc surface 21b are coaxially arranged, and the inner diameter of the round hole 28a is larger than the inner diameter of the snap ring 3 but smaller than the outer diameter of the snap ring 3; the calibration mechanism further includes a calibration rod 22 coaxially arranged in the round hole 28a. The upper end of the calibration rod 22 is a conical part 22a matching the inner hole of the snap ring 3, and the diameter of the conical part 22a gradually becomes larger downward. A fourth driving member 23 for driving the calibration rod 22 to move up and down is also fixedly arranged on the frame 4. During use, when the snap ring 3 presses on the arc surface 21b and stays, the fourth driving member 23 drives the calibration rod 22 to move up so that the conical part 22a extends into the snap ring 3 and jacks it up, using the taper of the conical part 22a to further calibrate the position of the snap ring 3, thereby further strengthening the position accuracy of the snap ring 3 and making the subsequent installation more stable.

[0071] In an actual product, the fourth driving member 23 is a telescopic cylinder. The cylinder body of the telescopic cylinder is fixed on the frame 4, and the piston rod of the telescopic cylinder is fixedly connected to the calibration rod 22.

[0072] As Figure 11 、 Figure 12 and Figure 13 shown, the structure of the pressing-in mechanism is as follows: It includes a connecting seat 24 slidably arranged on the plate-shaped part 9a, a connecting frame 25 slidably arranged on the connecting seat 24, a fifth driving member 26 for driving the connecting seat 24 to slide along the length direction of the plate-shaped part 9a, and a sixth driving member 27 for driving the connecting frame 25 to move up and down. Among them, a material-grabbing structure for grasping the calibrated snap ring 3 and a material-pressing structure for pressing the snap ring 3 on the material-grabbing structure into the snap ring groove of the end cover 1 are arranged on the connecting frame 25. The pressing-in mechanism is divided into three parts: a sliding part, a material-grabbing structure, and a material-pressing structure, which is not only convenient for design but also can improve the operation stability.

[0073] Among them,

[0074] The connecting seat 24 is slidably arranged on the plate-shaped part 9a through a guide rail-slider structure; the connecting frame 25 is slidably arranged on the connecting seat 24 through a guide rail-slider structure. In an actual product, the guide rail and the slider are fixedly connected to the connecting frame 25 and the connecting seat 24 respectively.

[0075] The driving member five 26 and the driving member six 27 can be either air cylinders or oil cylinders, wherein the piston rod of the driving member five 26 is fixedly connected to the connecting seat 24; the piston rod of the driving member six 27 is fixedly connected to the corresponding guide rail.

[0076] like Figure 9 and Figure 10 As shown, a mounting hole is vertically penetrated on the bottom wall of the strip groove 21a, and a circular sleeve 28 is inserted into the mounting hole. The inner hole of the circular sleeve 28 is the circular hole 28a mentioned above. Preferably, the top wall of the circular sleeve 28 is flush with the bottom wall of the strip groove 21a. The positioning frame 21 is also provided with a lifting structure for driving the circular sleeve 28 to rise and fall. Specifically, the lifting structure includes a horizontally arranged mounting plate 29 and a driving member 9 30 for driving the mounting plate 29 to rise and fall. The circular sleeve 28 is pressed on the top wall of the mounting plate 29 and the two are fixedly connected; the mounting plate 29 is located between the driving member 9 30 and the circular sleeve 28. The driving member 9 30 is an air cylinder or an oil cylinder. The cylinder body of the driving member 9 30 is fixed to the positioning frame 21, and the piston rod of the driving member 9 30 is fixedly connected to the mounting plate 29. In the actual product, the circular sleeve 28 is fixed in the middle of the mounting plate 29, and there are two driving members 30, which act on both ends of the mounting plate 29 respectively to improve the lifting and lowering stability of the circular sleeve 28; an avoidance hole is provided on the mounting plate 29 for the correction rod 22 to pass through.

[0077] The material grabbing structure is as follows: Figure 12 and Figure 13 As shown, it includes an expansion sleeve 31 and a driving member 32, both mounted on the connecting frame 25. The outer wall of the expansion sleeve 31 mates with the retaining spring 3, and the upper end of the expansion sleeve 31 is fixedly connected to the connecting frame 25. An outer support rod 33 is vertically disposed within the expansion sleeve 31. The upper end of the outer support rod 33 extends out of the expansion sleeve 31 and is connected to the driving member 32. The lower end of the expansion sleeve 31 engages with the outer support rod 33 via a tapered surface, and the driving member 32 is used to drive the outer support rod 33 upward and downward. In this embodiment, the driving member 32 is a cylinder, the cylinder body of which is fixed to the connecting frame 25, and the cylinder piston rod is fixedly connected to the outer support rod 33. By moving the connecting frame 25, the expanding sleeve 31 can be made coaxial with the correction rod 22, and the entire material grabbing process is as follows: the expanding sleeve 31 moves to align with the correction rod 22 and the outer support rod 33 is pressed on the correction rod 22, then the expanding sleeve 31 and the correction rod 22 are synchronously moved down to press the retaining spring 3 on the circular sleeve 28. At this time, the expanding sleeve 31 partially enters the inner hole of the retaining spring 3, then the circular sleeve 28 moves up to lift the retaining spring 3, and then the outer support rod 33 moves up to make the expanding sleeve 31 expand and clamp the retaining spring 3, and then the expanding sleeve 31 moves to the position of the end cover 1. During the operation of the pressing structure, the outer support rod 33 moves down to make the expanding sleeve 31 contract and loosen the retaining spring 3, ensuring that the retaining spring 3 is smoothly inserted into the retaining spring groove of the end cover 1.

[0078] The pressing structure is as follows: it includes an extrusion frame 34 and a driving member 8 35 for driving the extrusion frame 34 up and down, with the driving member 8 35 being mounted on the connecting frame 25. The bottom wall of the extrusion frame 34 comprises a horizontally arranged pressure plate portion 34a, which is vertically penetrated by a clearance hole for the lower end of the expansion sleeve 31 to pass through. In actual use, the pressure plate portion 34a is used to both push the retaining spring 3 on the expansion sleeve 31 into the retaining spring groove of the end cap 1 and to limit the upward movement distance of the retaining spring 3 driven by the circular sleeve 28, so that the retaining spring 3 is moved into position all at once. In other words, in this application, the extrusion frame 34 serves two purposes, simplifying the structure and facilitating assembly.

[0079] Further description, the extrusion frame 34 is roughly U-shaped, and there are two driving members 8 35 connected to both ends of the extrusion frame 34 to provide a larger and more stable force to install the clamping spring 3. In this embodiment, the driving member 8 35 is a cylinder or an oil cylinder.

[0080] Embodiment 2

[0081] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the linkage mechanism includes a circle of protrusions formed on the inner wall of the cavity 10a, and the protrusions are used to be inserted into the gap between two adjacent teeth 2a on the flywheel 2.

[0082] Example 3

[0083] The structure and principle of the third embodiment are basically the same as those of the first embodiment, except that the power component 12 includes a support seat, a driving member fixed on the base 11 and used to drive the support seat to rise and fall, and a motor fixed on the support seat and used to drive the power column 10.

[0084] Example 4

[0085] The structure and principle of the fourth embodiment are substantially the same as those of the first embodiment, except that the translation mechanism includes an electric push rod, and the main shaft of the electric push rod is fixedly connected to the base 11 .

[0086] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. Hub motor end cover, flywheel, snap ring assembly machine, including a frame (4), characterized in that, On the frame (4), a first conveyor line (5) and a second conveyor line (6) are horizontally arranged. On the first conveyor line (5) and the second conveyor line (6), there are respectively running a first tooling (7) for horizontally supporting and positioning the end cover (1) and a second tooling (8) for horizontally supporting and positioning the flywheel (2). There are multiple first toolings (7) and second toolings (8), and they are respectively distributed along the conveying directions of the first conveyor line (5) and the second conveyor line (6); on the frame (4), there are also a tightening mechanism and a snap ring installing mechanism, and the tightening mechanism and the snap ring installing mechanism are sequentially distributed along the conveying direction of the first conveyor line (5); the tightening mechanism is used to grab the flywheel (2) and screw the flywheel (2) onto the tube body (1a) of the corresponding end cover (1); the snap ring installing mechanism includes a pressing-in mechanism and a horizontally arranged snap ring conveyor line. The snap ring conveyor line includes an outlet, and at the outlet, there is a correcting mechanism for correcting the position of the snap ring (3). The pressing-in mechanism is used to grab the corrected snap ring (3) and press the snap ring (3) into the snap ring groove of the corresponding end cover (1); the above-mentioned first conveyor line (5) includes a first driving mechanism and a first conveying track (5a) in a loop shape. The second conveyor line (6) includes a second driving mechanism and a second conveying track (6a) in a loop shape. The first conveying track (5a) and the second conveying track (6a) are coaxially arranged, and the snap ring conveyor line and the second conveying track (6a) are respectively arranged on the outer side and the inner side of the first conveying track (5a); multiple first toolings (7) are arranged in a loop shape on the first conveying track (5a). Two adjacent first toolings (7) in the same row are in head-to-tail contact. Multiple second toolings (8) are arranged in a loop shape on the second conveying track (6a). Two adjacent second toolings (8) in the same row are in head-to-tail contact. The first driving mechanism and the second driving mechanism are used to respectively push the first tooling (7) and the second tooling (8) to run; on the first conveying track (5a) and the second conveying track (6a), there is respectively reserved a vacant position for the first tooling (7) and the second tooling (8) to run; on the frame (4), a bracket (9) is fixed. The bracket (9) includes a vertically arranged plate-shaped part (9a). The length of the plate-shaped part (9a) extends along the distribution direction of the first conveying track (5a) and the second conveying track (6a). The tightening mechanism and the pressing-in mechanism are respectively arranged on both sides of the width of the plate-shaped part (9a); the tightening mechanism includes a vertically arranged power column (10), a base (11) slidably arranged on the plate-shaped part (9a), and a translation mechanism for driving the base (11) to reciprocally translate along the length direction of the plate-shaped part (9a). On the base (11), there is a power component (12) for driving the power column (10) to lift and rotate; at the lower end of the power column (10), a concave cavity (10a) for the flywheel (2) to extend into is formed. A circle of through holes are radially penetrated on the side wall of the concave cavity (10a), and in the through holes, there is fixed a glass bead spring (13) for supporting the teeth (2a) of the flywheel (2). Between the flywheel (2) and the power column (10), there is a linkage mechanism for making the flywheel (2) rotate following the power column (10);The calibration mechanism includes a positioning frame (21) fixed on the frame (4). A strip-shaped groove (21a) which is horizontally arranged and has a size matching that of the circlip (3) is formed on the top wall of the positioning frame (21). The length of the strip-shaped groove (21a) extends along the length direction of the plate-shaped part (9a). One end of the strip-shaped groove (21a) is connected to the outlet of the circlip conveying line, and the inner wall of the other end of the strip-shaped groove (21a) is an arc surface (21b) matching the circlip (3).; 2. The hub motor end cover, flywheel, and snap ring assembly machine according to claim 1, wherein The circlip conveying line includes a support plate (15) horizontally fixed on a frame (4) and a support block (16) fixed on the support plate (15). A conveying channel (17) which is straight and arranged opposite to a strip-shaped groove (21a) is formed between the support plate (15) and the support block (16). The height of the conveying channel (17) matches the thickness of the circlip (3), and the outlet of the conveying channel (17) is the outlet of the circlip conveying line. A material pipe (18) is vertically fixed on the support block (16), and the material pipe (18) communicates with the conveying channel (17) through a material passing hole vertically penetrating through the support block (16). The inner diameters of the material pipe (18) and the material passing hole both match the outer diameter of the circlip (3). A third driving member (19) and a driving plate (20) are further arranged on the support plate (15). The conveying channel (17) is located between the driving plate (20) and the strip-shaped groove (21a), and one end of the driving plate (20) extends into the conveying channel (17). The third driving member (19) is used to push the driving plate (20) to reciprocate horizontally along the length direction of the conveying channel (17).

3. The hub motor end cover, flywheel, and snap ring assembly machine according to claim 1, characterized in that, A round hole (28a) vertically penetrating through is formed on the bottom wall of the strip-shaped groove (21a). The round hole (28a) is coaxially arranged with the above-mentioned arc surface (21b), and the inner diameter of the round hole (28a) is larger than the inner diameter of the circlip (3) but smaller than the outer diameter of the circlip (3). The calibration mechanism further includes a calibration rod (22) coaxially arranged in the round hole (28a). The upper end of the calibration rod (22) is a conical part (22a) matching the inner hole of the circlip (3), and the diameter of the conical part (22a) gradually becomes larger downward. A fourth driving member (23) for driving the calibration rod (22) to move up and down is also fixed on the frame (4).

4. The hub motor end cover, flywheel, and circlip assembly machine according to claim 3, characterized in that, The pressing-in mechanism includes a connecting seat (24) slidably arranged on a plate-shaped part (9a), a connecting frame (25) slidably arranged on the connecting seat (24), a fifth driving member (26) for driving the connecting seat (24) to slide along the length direction of the plate-shaped part (9a), and a sixth driving member (27) for driving the connecting frame (25) to move up and down. A material grasping structure for grasping the calibrated circlip (3) and a material pressing structure for pressing the circlip (3) on the material grasping structure into the circlip groove of the end cover (1) are arranged on the connecting frame (25).

5. The hub motor end cover, flywheel, and snap ring assembly machine according to claim 4, wherein, An installation hole vertically penetrates through the bottom wall of the strip-shaped groove (21a). A round sleeve (28) is inserted into the installation hole, and the inner hole of the round sleeve (28) is the above-mentioned round hole (28a). A lifting structure for driving the round sleeve (28) to move up and down is further arranged on the positioning frame (21). The material grasping structure includes an expansion sleeve (31) and a seventh driving member (32) both arranged on the connecting frame (25). The outer wall of the expansion sleeve (31) matches the circlip (3). The upper end of the expansion sleeve (31) is fixedly connected to the connecting frame (25). An outer support rod (33) is vertically arranged in the expansion sleeve (31). The upper end of the outer support rod (33) extends out of the expansion sleeve (31) and is connected to the seventh driving member (32). The lower end of the expansion sleeve (31) is in conical surface fit with the outer support rod (33), and the seventh driving member (32) is used to drive the outer support rod (33) to move up and down. The expansion sleeve (31) can move to be coaxial with the calibration rod (22).

6. The hub motor end cover, flywheel, and circlip assembly machine according to claim 5, wherein The pressing structure includes an extrusion frame (34) and a driving member eight (35) for driving the extrusion frame (34) to rise and fall, and the driving member eight (35) is arranged on the connecting frame (25); the bottom wall of the extrusion frame (34) is a horizontally arranged pressing plate portion (34a), and a clearance hole is vertically penetrated on the pressing plate portion (34a) for the lower end of the expansion sleeve (31) to pass through.

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