Stator and rear end cover assembly mechanism

Abstract

The present application relates to motor assembly, especially to a kind of stator and rear end cover assembly mechanism, including stator transfer belt line assembly, stator positioning feeding and discharging module, lead wire threading assembly and assembly body discharging assembly, stator is transported from belt line and is positioned by positioning jacking device and is positioned again by flat pushing device;Stator is fixed by stator fixed jaw mechanism and rear end cover is placed on inclined tray overturning mechanism, tray overturning mechanism slides to the side close to stator, so that lead wire is threaded into outlet hole, lead wire jaw assembly clamps lead wire, and tray overturning mechanism is returned to normal and continues to slide to the side close to lead wire, so that stator is assembled into rear end cover, and stator positioning and pressing module presses stator into rear end cover;Assembly body discharging assembly is located at the side of lead wire threading assembly and is used for assembly body discharging.The present application realizes the automatic assembly of stator and rear end cover, and improves assembly efficiency.

Description

Technical Field

[0001] This invention relates to motor assembly, and particularly to a stator and rear end cover assembly mechanism. Background Technology

[0002] During motor assembly, the rear end cover and stator need to be assembled. During assembly, the lead wires on the stator need to be threaded into the wire outlet holes of the rear end cover so that the stator can be assembled into the rear end cover. If the assembly is done manually, it is not only inefficient, but also labor-intensive and costly. Summary of the Invention

[0003] This invention solves the problems in related technologies and proposes a stator and rear end cover assembly mechanism that can realize the automatic assembly of the stator and rear end cover and improve the assembly efficiency.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a stator and rear end cover assembly mechanism, comprising: The stator transfer conveyor assembly includes a conveyor belt and a positioning and lifting device and a flat pushing device installed on one side of the conveyor belt. The stator is conveyed from the conveyor belt and is lifted and positioned by the positioning and lifting device and then positioned again by the flat pushing device. The stator positioning and loading / unloading module is located on one side of the belt conveyor and includes an XZ axis linear module, a stator gripping module and a stator positioning and clamping module mounted on the XZ axis linear module. The stator gripping module grips the stator and transfers it to the lead wire threading assembly through the XZ axis linear module. The lead wire threading assembly includes a movable base, a stator fixing gripper mechanism slidably mounted on the movable base, a tray tilting mechanism, a lead wire gripper mechanism, and a lead wire pulling gripper mechanism mounted on the YZ axis linear module. The stator is fixed by the stator fixing gripper mechanism and the rear end cover is placed on the tilting tray tilting mechanism. The tray tilting mechanism slides towards the side closer to the stator so that the lead wire passes through the lead wire hole. The lead wire gripper assembly clamps the lead wire and the tray tilting mechanism returns to the center and continues to slide towards the side closer to the lead wire so that the stator is assembled into the rear end cover. The stator positioning and clamping module presses the stator into the rear end cover and grabs the assembly and transfers it to the assembly unloading assembly. The assembly cutting component is located on one side of the lead wire threading component and is used for assembly cutting.

[0005] As a preferred embodiment, the conveyor belt includes two sections with different speeds, and the positioning and lifting device and the flat pushing device are both installed on the faster conveyor belt. The positioning and lifting device includes a first lifting cylinder and a lifting seat. A proximity switch is installed on the lifting seat. The first lifting cylinder drives the lifting seat to extend out from the gap between the two belts on the conveyor belt for the initial positioning of the stator, and the flat pushing device pushes the stator to one side for repositioning. The first lifting cylinder drives the lifting seat to continue rising until it is disengaged from the conveyor belt.

[0006] As a preferred embodiment, the system also includes a guide assembly installed on the conveyor line. The guide assembly includes a mounting base, a stator coil guide rod, and a stator core guide rod, both of which are mounted on the mounting base.

[0007] As a preferred embodiment, the stator gripping module includes a stator gripping inner jaw and a first lead wire clamping jaw. The stator gripping inner jaw includes a gripping cylinder, a first mold core, a first push rod, and a first clamping jaw piece. The gripping cylinder is connected to the first push rod, and the end of the first push rod has a tapered structure. Several first clamping jaw pieces are slidably installed on the outer peripheral wall of the first mold core and expand or contract under the drive of the first push rod.

[0008] As a preferred embodiment, the stator positioning and clamping module includes a positioning post, a lower pressure plate, a second mold core, a second push rod, and a second gripper piece. The positioning post is mounted on the positioning post mounting plate and passes through the lower pressure plate. The lower pressure plate is driven to rise and fall by a lower pressure cylinder. The end of the second push rod has a tapered structure and is driven by a push rod cylinder. The second gripper piece is slidably mounted on the outer peripheral wall of the second mold core and expands or contracts under the drive of the second push rod.

[0009] As a preferred embodiment, the stator fixing gripper mechanism includes a stator gripper, a lifting adjustment seat, and a second lifting cylinder. The stator gripper is slidably mounted on a linear guide rail via a gripper mounting plate and slides up and down along the linear guide rail under the drive of the second lifting cylinder. The lifting adjustment seat includes a threaded screw and a nut seat. The nut seat is equipped with a hydraulic buffer, and the second lifting cylinder is mounted on the nut seat.

[0010] As a preferred embodiment, the pallet tilting mechanism includes a tilting cylinder, a support hinge seat, a pallet, and a limiting rod. The pallet is mounted on the pallet base plate via the support hinge seat. The pallet is provided with a support rod and a pallet gripper. The tilting cylinder is connected to the pallet via the tilting hinge seat. The limiting rod is installed on the side opposite to the tilting cylinder and is used to keep the pallet level.

[0011] As a preferred embodiment, the lead wire clamping mechanism includes a second lead wire clamping jaw mounted on a clamping jaw mounting base. The second lead wire clamping jaw includes a movable clamping jaw and a fixed clamping jaw rotatably connected. The fixed clamping jaw is mounted on a clamping jaw mounting plate, and a cylindrical pin is provided on the side of the fixed clamping jaw near the movable clamping jaw. The movable clamping jaw moves closer to or away from the fixed clamping jaw under the drive of a clamping jaw cylinder. The clamping jaw cylinder is mounted on the clamping jaw mounting plate via a cylinder hinge seat. The clamping jaw mounting base includes a column base and a rotating base. The rotating base is mounted on the column base via a connecting pin.

[0012] As a preferred embodiment, the lead wire clamping mechanism includes two sets of lead wire clamps and a pressure plate. The first lead wire clamp is driven to rise and fall by a first cylinder, and the second lead wire clamp is arranged parallel to the first lead wire clamp and mounted on a second mounting plate. The pressure plate is located on one side of the second lead wire clamp and is driven to rise and fall by a second cylinder.

[0013] As a preferred embodiment, the assembly unloading component includes an assembly transfer device and an unloading tooling tray. The assembly transfer device is equipped with assembly transfer grippers via a rotary cylinder, and the unloading tooling tray is slidably mounted on the first linear module.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention can realize the automatic assembly of the stator and the rear end cover, thereby improving the assembly efficiency; (2) The stator is initially positioned by the lifting and positioning device and then repositioned by the flat pushing device, so that the subsequent gripping is more accurate. The lifting and positioning device can lift the stator, which facilitates the gripping of the stator gripping module. (3) The gripping assembly is divided into a stator gripping inner jaw for gripping the stator and a lead wire gripper for clamping the lead wire. It can grip the stator and clamp the lead wire at the same time, which is convenient for subsequent assembly with the rear end cover. In addition, the stator is gripped by the inner gripping method, and the gripper is retracted into the inner hole of the stator for gripping, which completely eliminates the spatial interference of the lead wire gripper by the traditional external gripping method. The inner gripping stator gripping inner jaw is driven by a cylinder to drive the three-lobed elastic gripper. The radial opening and closing of the gripper is achieved by the axial movement of the push rod, which meets the gripping requirements of multiple specifications of stator. (4) The guide assembly ensures that the stator leads are facing forward during transport; (5) The tray is equipped with a support rod to support the rear cover, and the rear cover is also clamped by the tray claw to ensure that the rear cover will not move. (6) The lead wire clamp includes a movable clamp and a fixed clamp that are rotatably connected. A cylindrical pin is provided on the side of the fixed clamp near the movable clamp, and a cylindrical pin hole for inserting the cylindrical pin is provided on the movable clamp. When the lead wire is clamped by the two clamps, the cylindrical pin is inserted into the cylindrical pin hole to prevent the lead wire from coming out. (7) The angle of the clamp mounting base can be adjusted, which makes it easy to adjust the mounting angle of the lead wire clamp on it and improves adaptability; (8) The lead wire clamping mechanism has two sets of lead wire clamps. In the initial state, the two sets of lead wire clamps are at the same height. Then, one set of lead wire clamps rises under the drive of the cylinder, lifting and bending the lead wire upwards, which facilitates subsequent assembly. In addition, the lifting and lowering of the pressure plate driven by the cylinder plays the role of adjusting the height of the lead wire, which facilitates subsequent clamping. (9) The stator gripper can be adjusted in height by lifting cylinder to reduce the height difference between it and the rear end cover, thereby facilitating subsequent assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the stator transfer belt assembly of the present invention; Figure 3 This is a schematic diagram of the positioning and lifting device of the present invention; Figure 4 This is a schematic diagram of the structure of the first horizontal pushing device of the present invention; Figure 5 This is a schematic diagram of the structure of the second horizontal pushing device of the present invention; Figure 6 This is a schematic diagram of the structure of the guiding component of the present invention; Figure 7 This is a schematic diagram of the stator positioning and loading / unloading module of the present invention; Figure 8 This is a schematic diagram of the stator gripping inner claw of the present invention; Figure 9 This is a schematic diagram of the stator positioning and clamping module of the present invention; Figure 10 This is a schematic diagram of the stator positioning and clamping module of the present invention clamping the stator and the rear end cover; Figure 11 This is a schematic diagram of the lead wire threading assembly of the present invention; Figure 12 This is a schematic diagram of the stator fixing gripper mechanism of the present invention; Figure 13 This is a schematic diagram of the pallet tilting mechanism of the present invention; Figure 14 This is a schematic diagram of the lead wire clamping mechanism of the present invention; Figure 15 yes Figure 14 Enlarged view of point A in the middle; Figure 16 This is a schematic diagram of the structure of the gripper mounting base of the present invention; Figure 17This is a schematic diagram of the pull wire gripper mechanism of the present invention; Figure 18 This is a schematic diagram of the wire-pulling gripper mechanism of the present invention; Figure 19 This is a structural schematic diagram of the assembly cutting component of the present invention.

[0016] In the picture: 1. Stator transfer conveyor assembly; 11. Conveyor belt; 111. First conveyor belt; 112. Second conveyor belt; 12. Positioning and lifting device; 121. First lifting cylinder; 122. Lifting seat; 1221. Base plate; 1222. First lifting arm; 1223. Second lifting arm; 1224. Connecting rod; 1225. Third lifting arm; 1226. Third lifting arm; 13. Flat pushing device; 131. Flat pushing cylinder; 132. Flat pushing plate; 133. Lifting cylinder; 14. Guide assembly; 141. Mounting seat; 142. Stator coil guide rod; 143. Stator core guide rod. Stator positioning loading and unloading module, 21. XZ axis linear module, 22. Stator gripping module, 221. Stator gripping inner jaw, 2211. Gripping cylinder, 2212. First mold core, 2213. First ejector rod, 2214. First gripper piece, 222. First lead wire gripper, 23. Stator positioning clamping module, 231. Positioning post, 232. Lower pressure plate, 233. Second mold core, 234. Second ejector rod, 235. Second gripper piece, 236. Positioning post mounting plate, 237. Lower pressure cylinder, 238. Ejector rod cylinder; Lead wire threading assembly, 31. Movable base, 32. Stator fixing gripper mechanism, 321. Stator gripper, 322. Lifting adjustment seat, 3221. Screw, 3222. Nut seat, 323. Second lifting cylinder, 324. Gripper mounting plate, 33. Pallet tilting mechanism, 331. Tilting cylinder, 332. Support hinge seat, 333. Pallet, 334. Limiting rod, 335. Tilting hinge seat, 336. Pallet bottom plate, 337. Support rod, 338. Pallet gripper, 34. Lead wire gripper mechanism, 341. Second Lead wire clamp, 3411, moving clamp, 3412, fixed clamp, 3413, cylindrical pin, 342, clamp mounting base, 3421, column base, 3422, rotating seat, 343, clamp cylinder, 344, clamp mounting plate, 35, lead wire pulling clamp mechanism, 351, first cylinder, 352, pressure plate, 353, first lead wire clamp, 354, second lead wire clamp, 355, second mounting plate, 356, second cylinder, 357, first mounting plate, 36, YZ axis linear module, 37, rear end cover gripping mechanism; Assembly unloading component, 41, assembly transfer device, 42, unloading tooling tray, 43, rotary cylinder, 44, assembly transfer gripper, 45, first linear module. Stator, 51, Lead wire; Rear end cover. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0020] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0023] like Figures 1 to 19As shown, a stator and rear end cover assembly mechanism includes a stator transfer conveyor assembly 1, a stator positioning and unloading module 2, a lead wire threading assembly 3, and an assembly unloading assembly 4. The stator transfer conveyor assembly 1 includes a conveyor belt 11 and a positioning lifting device 12 and a flat pushing device 13 installed on one side of the conveyor belt 11. The stator 5 is conveyed from the conveyor belt 11, lifted and positioned by the positioning lifting device 12, and then repositioned by the flat pushing device 13. The stator positioning and unloading module 2 is located on one side of the conveyor belt 11 and... The system includes an XZ-axis linear module 21, a stator gripping module 22 and a stator positioning and clamping module 23 mounted on the XZ-axis linear module 21. The stator gripping module 22 grips the stator 5 and transfers it through the XZ-axis linear module 21 to the lead wire threading assembly 3. The lead wire threading assembly 3 includes a movable base 31, a stator fixing gripper mechanism 32 slidably mounted on the movable base 31, a tray tilting mechanism 33, a lead wire gripper mechanism 34, and a lead wire pulling gripper mounted on the YZ-axis linear module 36. Structure 35, wherein the stator fixing gripper mechanism 32 slides on the linear guide rail of the movable base 31 driven by a cylinder; the tray tilting mechanism 33 and the lead wire gripper mechanism 34 are both mounted on the linear motor stator on the movable base 31 by a linear motor mover and on the linear guide rail on the movable base 31 by a slider; the stator 5 is fixed by the stator fixing gripper mechanism 32 and the rear end cover 6 is placed on the inclined tray tilting mechanism 33; the tray tilting mechanism 33 slides towards the side closer to the stator 5, causing the lead wire to... The wire 51 is inserted into the outlet hole, the lead wire clamping claw assembly 34 clamps the lead wire 51, and the tray tilting mechanism 33 returns to the center and continues to slide towards the side closer to the lead wire 51, so that the stator 5 is assembled into the rear end cover 6. The stator positioning and clamping module 23 presses the stator 5 into the rear end cover 6 and grabs the assembly. The XZ axis linear module 21 drives the stator positioning and clamping module 23 to transfer the assembly to the assembly unloading assembly 4. The assembly unloading assembly 4 is located on one side of the lead wire threading assembly 3 and is used for unloading the assembly.

[0024] During assembly, the stator 5 is placed on the conveyor line 11 and transported to the positioning and lifting device 12 for lifting and positioning. It is then repositioned by the flat pushing device 13. The lifting device 12 then lifts the stator 5 off the conveyor line 11. The XZ axis linear module 21 drives the stator gripping module 22 to grip the stator 5 and transfer it to the stator fixing jaw mechanism 32 for fixation. The rear end cover 6 is placed on the inclined pallet tilting mechanism 33, which tilts towards... The stator 5 slides to the side closest to the stator 5, allowing the lead wire 51 to pass through the lead wire hole. The lead wire clamping claw assembly 34 clamps the lead wire 51, and the tray tilting mechanism 33 returns to the center and continues to slide to the side closest to the lead wire 51, so that the stator 5 is assembled into the rear end cover 6. The stator positioning and clamping module 23 presses the stator 5 into the rear end cover 6, thus completing the assembly of the stator 5 and the rear end cover 6. Then the stator fixing claw mechanism 32 retracts to facilitate unloading. The assembled assembly is unloaded through the assembly unloading assembly 4.

[0025] In one embodiment, a guide assembly 14 is further included, which is mounted on the first conveyor line 111. The guide assembly 14 includes an L-shaped mounting base 141, a stator coil guide rod 142, and a stator core guide rod 143. Both the stator coil guide rod 142 and the stator core guide rod 143 are mounted on the mounting base 141. The stator coil guide rod 142 is located closer to the stator 5 and is used for guiding the coil. The stator core guide rod 143 is located slightly away from the stator 5 and is used for guiding the core, so that the stator 5 keeps the lead wire facing forward when conveyed on the conveyor line 1.

[0026] In one embodiment, the conveyor belt 11 includes two sections with different speeds: a first conveyor belt 111 and a second conveyor belt 112. The speed of the first conveyor belt 111 is slower than that of the second conveyor belt 112. The positioning and lifting device 12 and the flat pushing device 13 are both mounted on the second conveyor belt 112. Since there are four gripping positions, there are four sets of corresponding positioning and lifting devices 12. Specifically, starting from the side closest to the first conveyor belt 111, they are divided into a first lifting and positioning assembly, a second lifting and positioning assembly, a third lifting and positioning assembly, and a fourth lifting and positioning assembly. Each positioning and lifting device 12 includes a first lifting cylinder 121 and a lifting seat 122. The cylinder 121 is located near the first conveyor belt 111. The first three sets of lifting and positioning devices 12 each have two first lifting cylinders 121. The piston rod of the lower first lifting cylinder 121 is connected to the bottom of the upper first lifting cylinder 121. The lifting seats 22 of the first three sets near the first belt line 111 have the same structure and each includes a base plate 1221 and a first lifting arm 1222 and a second lifting arm 1223 vertically installed on both sides of the base plate 1221. The length of the first lifting arm 1222 is shorter than the length of the second lifting arm 1223. A connecting rod 1224 is also provided between the first lifting arm 1222 and the second lifting arm 1223. The upper part of the side of the first lifting arm 1222 that is close to the second lifting arm 1223 has a stepped structure.The fourth lifting and positioning device 12 has only one first lifting cylinder 121, and the lifting base 122 includes a third lifting arm 1225 and a fourth lifting arm 1226 of the same length. A connecting rod 1224 connects the third lifting arm 1225 and the fourth lifting arm 1226. The upper part of the side of the third lifting arm 1225 and the fourth lifting arm 1226 that are close to each other is also a stepped structure. Two proximity switches are installed on the second lifting arm 1223, one of which has the same height as the top of the first lifting arm 1222, and the other... When the proximity switch is positioned near the top of the second lifting arm 1223, the first stator 5, conveyed from the first conveyor belt 111, stops at the end of the second conveyor belt 112. The second stator 5 is then conveyed to the third lifting and positioning assembly. When the proximity switch on the assembly detects the arrival of the stator 5, the first lifting cylinder 121 below operates, extending the second lifting arm 1223 through the gap between the two belts while the first lifting arm 1222 remains stationary, thus blocking the stator 5 and preventing it from advancing further. The subsequent two stators 5... The stator 5 is positioned in this way. After initial positioning by the stator lifting device 12, it is then repositioned by pushing it to one side by the flat pushing device 13. Specifically, the flat pushing device 13 includes a first flat pushing device for pushing the first three sets of stators 5 and a second flat pushing device for pushing the fourth set of stators 5. To avoid interference when the stators 5 are conveyed on the second belt conveyor 112, the first flat pushing device is driven by a lifting cylinder 133. When the stators 5 pass by, the lifting cylinder 133 lifts the first flat pushing device. When flat pushing is required, the lifting cylinder 133 lifts the first flat pushing device. The lowering cylinder 133 lowers the first horizontal pushing device. Both the first and second horizontal pushing devices include a horizontal pushing cylinder 131 and a horizontal pushing plate 132. The horizontal pushing plate 132 is driven by the horizontal pushing cylinder 131. After the stator 5 is lifted and positioned by the corresponding lifting seat 122, the horizontal pushing cylinder 131 drives the horizontal pushing plate 132 to push the stator 5 to one side, achieving positioning again. After positioning, the four sets of first lifting cylinders 121 work, lifting upwards to disengage the stator 5 from the second belt conveyor 112, thus facilitating subsequent gripping by the stator gripping module 22.

[0027] In one embodiment, the stator gripping module 22 includes four sets of stator gripping inner jaws 221 and four sets of first lead wire clamps 222. The stator gripping inner jaws 221 include a gripping cylinder 2211, a first mold core 2212, a first push rod 2213, and first clamping jaw pieces 2214. The gripping cylinder 2211 is connected to the first push rod 2213, and the end of the first push rod 2213 has a tapered structure. The three first clamping jaw pieces 2214 are slidably mounted on the outer peripheral wall of the first mold core 2212 and expand or contract under the drive of the first push rod 2213. When gripping the stator 5, the gripping cylinder 2211 drives the push rod 2213 to descend, thereby causing the three first gripper pieces 2214 to expand outward, thus gripping the stator 5; the first lead wire gripper 222 is used to grip the lead wire 51 on the stator 5. Specifically, the first lead wire gripper 222 includes a pneumatic gripper and fingers installed on the pneumatic gripper. The pneumatic gripper drives the two fingers to close, thereby gripping the lead wire 51. After gripping the stator 5, the stator 5 is moved to the stator fixing gripper mechanism 32 by the XZ axis linear module 21.

[0028] In one embodiment, the stator fixing gripper mechanism 32 includes a stator gripper 321, a lifting adjustment seat 322, and a second lifting cylinder 323. The stator gripper 321 is slidably mounted on a linear guide rail via a gripper mounting plate 324 and slides up and down along the linear guide rail under the drive of the second lifting cylinder 323. The lifting adjustment seat 322 includes a threaded screw 3221 and a nut seat 3222. A hydraulic buffer is mounted on the nut seat 3222, and the second lifting cylinder 323 is mounted on the nut seat 3222. When the stator 5 is aligned with the rear end... When the height difference between the upper and lower parts of the cover 6 is large, the stator gripper 321 is driven to descend by the second lifting cylinder 323 to reduce the height difference between the cover 6 and the rear cover 6 for subsequent assembly. When the rear cover 6 reaches below the stator 5 under the drive of the pallet tilting mechanism 33, the stator gripper 321 is released, allowing the stator 5 to fall into the rear cover 6. The stator positioning and clamping module 23 then presses the stator 5 into the rear cover 6 for assembly. In addition, after the assembly is completed, the stator fixing gripper mechanism 32 needs to be moved backward under the drive of the cylinder to facilitate the unloading of the subsequent assembly.

[0029] In one embodiment, the pallet tilting mechanism 33 includes a tilting cylinder 331, a support hinge seat 332, a pallet 333, and a limiting rod 334. The pallet 333 is mounted on the pallet base plate 336 via the support hinge seat 332. The pallet 333 is provided with a support rod 337 and a pallet gripper 338. The support rod 337 supports the rear end cover 6, and the pallet gripper 338 can clamp the rear end cover 6 to prevent it from moving on the pallet 333. The tilting cylinder 331 is connected to the pallet 333 via the tilting hinge seat 335. The limiting rod 334 is installed on the opposite side of the tilting cylinder 331. When the tilting cylinder 331 drives the pallet 333 from an inclined state to a horizontal state, the limiting rod 334 abuts against the pallet 333 to keep the pallet 333 horizontal.

[0030] In addition, the rear cover 6 is gripped by the rear cover gripping mechanism 37 mounted on the YZ axis linear module 36, which uses an electric suction cup.

[0031] In one embodiment, the lead wire clamping mechanism 34 includes a second lead wire clamping jaw 341 mounted on a clamping jaw mounting base 342. The second lead wire clamping jaw 341 includes a movable jaw 3411 and a fixed jaw 3412 rotatably connected. The fixed jaw 3412 is mounted on a clamping jaw mounting plate 344, and a cylindrical pin 3413 is provided on the side of the fixed jaw 3412 near the movable jaw 3411. A pin hole for inserting the cylindrical pin 3413 is provided on the movable jaw 3411. When the lead wire 51 is clamped by the two jaws, the cylindrical pin 3413 is inserted into the cylindrical pin hole to prevent the lead wire 51 from slipping out. The movable jaw 3411 moves closer to the clamping jaw under the drive of the clamping jaw cylinder 343. Alternatively, the gripper cylinder 343 is mounted on the gripper mounting plate 344 via a cylinder hinge seat 331, located away from the fixed gripper 3412. The gripper mounting base 342 includes a column base 3421 and a rotating seat 3422. The column base 3421 has a U-shaped groove in the vertical direction, and the rotating seat 3422 is mounted in the U-shaped groove via a connecting pin. An arc-shaped groove is provided on the mounting part of the rotating seat 3422, so that the mounting angle of the rotating seat 3422 on the column base 3421 can be adjusted. The two are fixed by bolts. An arc-shaped groove and a strip groove are also provided on the circular seat surface at the top of the rotating seat 3422, so as to facilitate the adjustment of the mounting angle of the lead wire gripper 31 on it.

[0032] In one embodiment, the lead wire clamping mechanism 35 includes two sets of lead wire clamps and a pressure plate 352. Each set of lead wire clamps has four lead wire clamps. The first lead wire clamp 353 is mounted on the first mounting plate 357. The first cylinder 351 drives the first mounting plate 357 to raise and lower the first lead wire clamp 353. The second lead wire clamp 354 is arranged parallel to the first lead wire clamp 353 and mounted on the second mounting plate 355. The pressure plate 352 is located on one side of the second lead wire clamp 354 and is raised and lowered by the second cylinder 356. It is used to make the height of the lead wire 51 uniform. When clamping, the first cylinder 351 drives the first lead wire clamp 353 to descend to the same height as the second lead wire clamp 354 to clamp the lead wire 51. Then, the first lead wire clamp 353 rises under the drive of the first cylinder 351 to pull the lead wire 51 upward, thereby facilitating subsequent wire threading.

[0033] In one embodiment, the stator positioning and clamping module 23 includes a positioning post 231, a lower pressure plate 232, a second mold core 233, a second push rod 234, and a second gripper piece 235. The positioning post 231 is mounted on the positioning post mounting plate 236 and passes through the lower pressure plate 232. The lower pressure plate 232 is driven to rise and fall by a lower pressure cylinder 237. The end of the second push rod 234 has a tapered structure and is driven by a push rod cylinder 238. The second gripper piece 235 is slidably mounted on the outer peripheral wall of the second mold core 233. Under the drive of the second push rod 234, the stator expands or contracts. The end of the second gripper 235 has a hook-shaped structure. When pressing, the stator is first positioned by the four positioning pins 231 and the four positioning holes on the rear end cover 6. Then, the second push rod 234 is driven by the push rod cylinder 238 to clamp the stator 5. The lower pressure plate 232 is driven down by the lower pressure cylinder 237 to press the stator 5 into the rear end cover 6. Then, the assembly is transferred to the assembly unloading component 4 by the XZ axis linear module 21.

[0034] In one embodiment, the assembly unloading component 4 includes an assembly transfer device 41 and an unloading tooling tray 42. The assembly transfer device 41 is a linear module capable of horizontal and vertical movement. An assembly transfer gripper 44 is mounted on the assembly transfer device 41 via a rotary cylinder 43. The structure of the assembly transfer gripper 44 is the same as that of the stator gripping inner gripper 221, and will not be described again here. The assembly is rotated 90° by the rotary cylinder 43 and then placed on the unloading tooling tray 42. The unloading tooling tray 42 is slidably mounted on the first linear module 45. The unloading cylinder drives the unloading tooling tray 42 to slide on the linear guide rail to unload the assembly.

[0035] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A stator and rear end cover assembly mechanism, characterized in that, include: The stator transfer belt assembly (1) includes a belt (11) and a positioning lifting device (12) and a flat pushing device (13) installed on one side of the belt (11). The stator (5) is transported from the belt (11) and lifted and positioned by the positioning lifting device (12) and repositioned by the flat pushing device (13). The stator positioning and unloading module (2) is located on one side of the belt conveyor (11) and includes an XZ axis linear module (21), a stator gripping module (22) and a stator positioning and clamping module (23) mounted on the XZ axis linear module (21). The stator gripping module (22) grips the stator (5) and transfers it to the lead wire threading assembly (3) through the XZ axis linear module (21). The stator gripping module (22) includes a stator gripping inner jaw (221) and a first lead wire clamping jaw (222). The stator gripping inner jaw (221) includes a gripping cylinder (2211), a first mold core (2212), a first push rod (2213), and a first gripper piece (2214). The gripping cylinder (2211) is connected to the first push rod (2213), and the end of the first push rod (2213) is a tapered structure. Several first gripper pieces (2214) are slidably installed on the outer peripheral wall of the first mold core (2212) and expand or contract under the drive of the first push rod (2213). The lead wire threading assembly (3) includes a movable base (31), a stator fixing gripper mechanism (32) slidably mounted on the movable base (31), a tray tilting mechanism (33), a lead wire gripper mechanism (34), and a lead wire pulling gripper mechanism (35) mounted on the YZ axis linear module (36). The stator (5) is fixed by the stator fixing gripper mechanism (32), and the rear end cover (6) is placed on the tilted tray tilting mechanism (33). The mechanism (33) slides towards the side closer to the stator (5) so that the lead wire (51) passes through the lead wire hole. The lead wire clamping mechanism (34) clamps the lead wire (51) and the tray tilting mechanism (33) returns to the center and continues to slide towards the side closer to the lead wire (51) so that the stator (5) is assembled into the rear end cover (6). The stator positioning and pressing module (23) presses the stator (5) into the rear end cover (6) and grabs the assembly and transfers it to the assembly unloading component (4). The assembly blanking component (4) is located on one side of the lead wire threading component (3) and is used for assembly blanking.

2. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The belt conveyor (11) includes two belt conveyors with different speeds, and the positioning lifting device (12) and the flat pushing device (13) are both installed on the belt conveyor with higher speed. The positioning lifting device (12) includes a first lifting cylinder (121) and a lifting seat (122). A proximity switch is installed on the lifting seat (122). The first lifting cylinder (121) drives the lifting seat (122) to extend out from the gap between the two belts on the belt conveyor with higher speed to perform the initial positioning of the stator (5). The flat pushing device (13) pushes the stator (5) to one side for repositioning. The first lifting cylinder (121) drives the lifting seat (122) to continue to rise until it is separated from the belt conveyor (11).

3. The stator and rear end cover assembly mechanism according to claim 2, characterized in that: It also includes a guide assembly (14) installed on the belt (11), the guide assembly (14) including a mounting base (141), a stator coil guide rod (142), and a stator core guide rod (143), the stator coil guide rod (142) and the stator core guide rod (143) being installed on the mounting base (141).

4. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The stator positioning and clamping module (23) includes a positioning post (231), a lower pressure plate (232), a second mold core (233), a second push rod (234), and a second gripper piece (235). The positioning post (231) is mounted on the positioning post mounting plate (236) and passes through the lower pressure plate (232). The lower pressure plate (232) is driven to rise and fall by a lower pressure cylinder (237). The end of the second push rod (234) is a tapered structure and is driven by a push rod cylinder (238). The second gripper piece (235) is slidably mounted on the outer peripheral wall of the second mold core (233) and expands or contracts under the drive of the second push rod (234).

5. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The stator fixing gripper mechanism (32) includes a stator gripper (321), a lifting adjustment seat (322), and a second lifting cylinder (323). The stator gripper (321) is slidably mounted on the linear guide rail via a first gripper mounting plate (324) and slides up and down along the linear guide rail under the drive of the second lifting cylinder (323). The lifting adjustment seat (322) includes a threaded screw (3221) and a nut seat (3222). A hydraulic buffer is installed on the nut seat (3222), and the second lifting cylinder (323) is installed on the nut seat (3222).

6. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The pallet tilting mechanism (33) includes a tilting cylinder (331), a support hinge seat (332), a pallet (333), and a limiting rod (334). The pallet (333) is mounted on the pallet base plate (336) via the support hinge seat (332). The pallet (333) is provided with a support rod (337) and a pallet gripper (338). The tilting cylinder (331) is connected to the pallet (333) via the tilting hinge seat (335). The limiting rod (334) is mounted on the side opposite to the tilting cylinder (331) and is used to keep the pallet (333) horizontal.

7. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The lead wire clamping mechanism (34) includes a second lead wire clamping jaw (341) mounted on a clamping jaw mounting base (342). The second lead wire clamping jaw (341) includes a movable clamping jaw (3411) and a fixed clamping jaw (3412) rotatably connected. The fixed clamping jaw (3412) is mounted on a second clamping jaw mounting plate (344), and a cylindrical pin (3413) is provided on the side of the fixed clamping jaw (3411) near the movable clamping jaw (3411). The movable clamping jaw (3411) moves closer to or away from the fixed clamping jaw (3412) under the drive of a clamping jaw cylinder (343). The clamping jaw cylinder (343) is mounted on the second clamping jaw mounting plate (344) through a cylinder hinge seat. The clamping jaw mounting base (342) includes a column base (3421) and a rotating seat (3422). The rotating seat (3422) is mounted on the column base (3421) through a connecting pin.

8. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The lead wire clamping mechanism (35) includes two sets of lead wire clamps and a pressure plate (352). The first lead wire clamp (353) is driven to rise and fall by the first cylinder (351). The second lead wire clamp (354) is arranged parallel to the first lead wire clamp (353) and is mounted on the second mounting plate (355). The pressure plate (352) is located on one side of the second lead wire clamp (354) and is driven to rise and fall by the second cylinder (356).

9. The stator and rear end cover assembly mechanism according to claim 1, characterized in that: The assembly unloading component (4) includes an assembly transfer device (41) and an unloading tooling tray (42). The assembly transfer device (41) is equipped with an assembly transfer gripper (44) via a rotary cylinder (43). The unloading tooling tray (42) is slidably mounted on the first linear module (45).

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