Brush holder and motor end cover assembly

Abstract

This invention belongs to the field of motor end cap installation technology, and particularly relates to an assembly device for a brush holder and a motor end cap. It includes a first positioning seat for positioning the motor end cap, a first rotary driver for driving the first positioning seat to rotate below it, and feeding mechanisms for feeding the brush holder on both sides of the first positioning seat. Each feeding mechanism is connected to the first positioning seat by a horizontal / vertical conversion mechanism. The horizontal / vertical conversion mechanism includes a first limiting seat for supporting the brush holder and a second rotary driver for driving the first limiting seat to switch between horizontal and vertical orientations. The horizontal / vertical conversion mechanism is slidably mounted on a worktable. The worktable is provided with a first pushing mechanism that pushes the horizontal / vertical conversion mechanism toward or away from the first positioning seat. A first gripping mechanism is provided between the feeding mechanism and the horizontal / vertical conversion mechanism. This invention has the advantages of automatically feeding and pressing the brush holder, high pressing efficiency, and reduced labor costs.

Description

Technical Field

[0001] This invention belongs to the field of motor end cover installation technology, and particularly relates to a brush holder and motor end cover assembly device. Background Technology

[0002] In the automated installation process of brush holders and motor end caps, a feeding mechanism is usually used to feed the brush holders, such as a vibratory feeder. However, some brush holders have a circular cross-section and a stepped structure. In order to prevent such brush holders from tilting when placed horizontally, which would make it difficult for the feeding mechanism to feed them, it is necessary to manually place the brush holders horizontally on the pressing mechanism.

[0003] For example, Chinese Patent Application No. CN201911394746.4 discloses a brush holder bracket and rear end cap pressing device, including a base plate. The base plate is provided with a pressing mechanism and several pressing mechanisms. The pressing mechanism includes a press. The press has a horizontally arranged telescopic pressure rod. The front end of the telescopic pressure rod is provided with a pressure head and a positioning part. The pressure head is located behind the positioning part. The positioning part extends forward, and the shape and size of the outer circumferential edge of the positioning part are the same as the shape and size of the inner edge of the brush holder bracket to be pressed.

[0004] In the above solution, the end cap is positioned by a clamping mechanism and the brush holder is pressed laterally into the end cap by a pressing mechanism. However, when the brush holder is placed on the positioning part, it needs to be placed manually, which results in low pressing efficiency and increased labor costs. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic brush holder and motor end cap assembly device that automatically feeds and presses the brush holder, has high pressing efficiency, and can reduce labor costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a brush holder and motor end cap assembly device, comprising a first positioning seat for positioning the motor end cap, a first rotary driver for driving the first positioning seat to rotate below the first positioning seat, a feeding mechanism for feeding the brush holder on both sides of the first positioning seat, a horizontal-vertical conversion mechanism between each feeding mechanism and the first positioning seat, the horizontal-vertical conversion mechanism comprising a first limiting seat for supporting the brush holder and a second rotary driver for driving the first limiting seat to horizontal-vertical conversion, the horizontal-vertical conversion mechanism being slidably mounted on a worktable, a first pushing mechanism for pushing the horizontal-vertical conversion mechanism to move closer to or away from the first positioning seat on the worktable, and a first gripping mechanism between the feeding mechanism and the horizontal-vertical conversion mechanism.

[0007] In use, the operator places the motor end cover on the first positioning seat. The feeding mechanism feeds the brush holder, which is then gripped by the first gripping mechanism and transferred to the first limiting seat of the horizontal-vertical conversion mechanism. The first limiting seat rotates 90° under the action of the second rotary driver, changing from vertical to horizontal. Then, the first pushing mechanism pushes the horizontal-vertical conversion mechanism, bringing the first limiting seat closer to the motor end cover and inserting the brush holder into the mounting hole of the motor end cover. After one set of brush holders is inserted, the horizontal-vertical conversion mechanism moves away from the motor end cover, the first limiting seat returns to the vertical position, the first gripping mechanism grips the next brush holder, and the first positioning seat rotates, positioning the other two mounting holes without motor end covers in the pre-pressing position. The first gripping mechanism can move up, down, left, and right to transfer the brush holder; it can be a pneumatic gripper or a robotic arm.

[0008] Vertical feeding of the brush holders is more convenient and facilitates gripping by the first gripping mechanism. After gripping, the vertical brush holder is rotated 90° by the horizontal-vertical conversion mechanism before being inserted into the mounting hole of the motor end cover. The first positioning seat has identical mechanisms on both sides; after the first brush holder insertion, it rotates, and then the second brush holder insertion is performed. Only two insertions are needed to insert all four brush holders into the mounting holes, resulting in high speed, high efficiency, and reduced labor costs. The second rotary driver can directly drive the first limit seat to rotate via a servo motor or via a gear and rack mechanism. The feeding mechanism can be any existing vibratory feeder for brush holder feeding.

[0009] Preferably, each of the feeding mechanisms is provided with a visual inspection mechanism, which includes a camera for visually inspecting the brush holder. The camera is equipped with a vertically arranged second limiting seat, which is located in the illumination path of the camera. The lower end of the second limiting seat is connected to a third rotary driver that drives the second limiting seat to rotate.

[0010] When inserting the brush holder into the motor end cover, the position of the screw holes on the brush holder needs to be determined so that, after insertion, the screw holes on the brush holder align with the screw holes on the motor end cover mounting holes. A camera detects the brush holder placed on the second limiting seat, and a third rotary driver rotates the second limiting seat to adjust the position of the brush holder, ensuring the screw holes are in the correct positions. The second limiting seat limits the brush holder, preventing rotation relative to it. The vision inspection mechanism is connected to the feeding mechanism and the horizontal / vertical conversion mechanism via the first gripping mechanism. The vision inspection mechanism is an existing device.

[0011] Preferably, each of the visual inspection mechanisms is provided with an adhesive application mechanism between it and the horizontal-vertical conversion mechanism. The adhesive application mechanism includes an adhesive application gun, which is equipped with a vertically arranged third limiting seat. The lower end of the third limiting seat is connected to a fourth rotary driver that drives the third limiting seat to rotate.

[0012] By using a glue gun to apply glue to the outside of the brush holder, the brush holder can adhere and seal against the wall of the mounting hole in the motor end cover when it is installed. A fourth rotary driver drives the third limit seat to rotate, causing the brush holder and the third limit seat to rotate synchronously. This allows the glue gun to apply a ring of sealant to the outer wall of the brush holder. The third limit seat and the second limit seat are the same type of limit seat.

[0013] Preferably, the horizontal-vertical conversion mechanism includes a rotating shaft rotatably connected to a fixed plate, a first limiting seat fixed on the rotating shaft, a gear at one end of the rotating shaft meshing with a rack, and one end of the rack connected to a second pushing mechanism, which causes the rack to move closer to or away from the first positioning seat.

[0014] When the second pushing mechanism moves the rack closer to or away from the first positioning seat, the gear rotates, causing the shaft to rotate, which in turn causes the first limit seat to rotate. The second pushing mechanism can employ various existing mechanisms capable of moving the rack in a straight line, such as an electric push rod or a linear cylinder. The gear and rack combination structure is particularly cost-effective and offers high precision.

[0015] Preferably, the first positioning seat is provided with a plurality of positioning pins for engaging with the process holes of the motor end cover. The center of the first positioning seat is provided with a first positioning post for positioning the center hole of the motor end cover. A positioning pressure head is provided above the first positioning seat. The positioning pressure head moves closer to or away from the first positioning seat by means of a press. The center of the positioning pressure head is provided with a second positioning post for extending into the center hole of the motor end cover. The positioning pressure head is provided with a plurality of clearance notches evenly spaced in a ring around the second positioning post. The clearance notches are used to make way for the outer shell of the mounting hole of the motor end cover.

[0016] The motor end cover is positioned using a locating pin and a first locating post, thereby achieving precise positioning of the mounting holes on the motor end cover. The third rotary driver can be a servo motor. A locating pressure head is pressed onto the motor end cover to further position it, ensuring accuracy.

[0017] Preferably, a dispensing mechanism and a screw-tightening mechanism are provided on one side of the first positioning seat, and a slide rail is provided between the first positioning seat and the dispensing mechanism and the screw-tightening mechanism, and the first positioning seat is slidably mounted on the slide rail.

[0018] By setting up a slide rail, the motor end cover can be moved after the brush holder is installed, and then glue can be applied and screws tightened. The sliding of the first positioning seat can be achieved by a cylinder or a lead screw assembly.

[0019] Preferably, a second gripping mechanism for gripping and transferring the motor end cover is provided on the opposite side of the dispensing mechanism and the screw-tightening mechanism, and a conveyor belt for receiving the motor end cover is provided on one side of the screw-tightening mechanism.

[0020] Adhesive is applied to the screw holes of the motor end cover and brush holder using a dispensing mechanism. Then, screws are tightened into these holes using a screw-tightening mechanism to secure the motor end cover and brush holder together, thus achieving encapsulation. The second gripping mechanism can be a robotic arm or a pneumatic gripper, and can be moved up, down, left, and right by a sliding rail. Both the dispensing and screw-tightening mechanisms are existing technologies.

[0021] Preferably, both the dispensing mechanism and the screw-tightening mechanism are provided with a second positioning seat for positioning the motor end cover, and the lower end of the second positioning seat is provided with a fifth rotary driver for driving the second positioning seat to rotate.

[0022] After the dispensing mechanism dispenses adhesive to the two screw holes of the motor end cover, the second positioning seat is driven by the fifth rotary driver to rotate the motor end cover, so that the dispensing mechanism dispenses adhesive to the other two screw holes of the motor end cover. The same applies to the screw tightening mechanism.

[0023] Preferably, one side of the slide rail is provided with a motor end cover feeding part, which includes a placement plate for placing the motor end cover. One side of the placement plate is provided with a transfer mechanism for transferring the motor end cover. The transfer mechanism includes a vertically arranged support column and a rotating plate located at the upper end of the support column. The rotating plate is driven to rotate by a sixth rotary actuator fixed on the support column. One end of the rotating plate is provided with a lifting mechanism. The lower end of the lifting mechanism is provided with two opening members. The two opening members are arranged opposite to each other. The two opening members move away from each other or closer to each other through the opening drive mechanism. Each opening member is used to enter the mounting hole of the motor end cover.

[0024] During use, the lifting mechanism descends, positioning the supporting members either within or outside the motor end cover. The drive mechanism then moves the two supporting members closer together or further apart, allowing them to extend from the inside out or from the outside in into the two opposite mounting holes on the motor end cover, thus securing the supporting members to the motor end cover. The lifting mechanism then rises, causing the rotating plate to rotate and position the lifting mechanism above the slide rail. The lifting plate then descends, placing the motor end cover on the first positioning seat. The slide rail then moves the first positioning seat to the brush holder loading device side, i.e., the horizontal / vertical conversion mechanism side, for brush holder loading. The lifting mechanism can be raised and lowered using either a push rod motor or a linear cylinder.

[0025] Preferably, the motor end cover loading part includes a bracket and a fixed frame that is lifted and lowered on the bracket. The fixed frame is raised or lowered by a lifting drive mechanism on the bracket. The fixed frame is equipped with a plurality of stacked placement plates. Each placement plate has a mating pin on its edge side. A support seat for supporting the placement plate is provided below the lifting mechanism. The lifting mechanism is provided with a pulling block for pulling the placement plate. The pulling block has a mating hole that mates with the mating pin.

[0026] The pull block is fitted onto the mating pin of the uppermost placement plate of the fixed frame. Then the rotating plate rotates, dragging the placement plate onto the support base. After that, the motor end cover on the placement plate is installed.

[0027] The above settings can reduce the labor intensity of workers and achieve a higher level of automation.

[0028] This invention has the following advantages: it enables vertical feeding and horizontal pressing of the brush holder, which is efficient and fast; it also enables automatic feeding via the motor end cap, reducing labor costs; and it can automatically tighten screws to fix the brush holder and the motor end cap. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of the brush holder for feeding and inserting into the motor end cover of the present invention.

[0031] Figure 3 This is a schematic diagram of the visual inspection mechanism, the glue application mechanism, and the horizontal / vertical conversion mechanism of the present invention.

[0032] Figure 4 This is a schematic diagram of the horizontal-vertical conversion mechanism of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of the first gripping mechanism of the present invention.

[0034] Figure 6This is a bottom view of the motor end cover positioning part of the present invention.

[0035] Figure 7 This is a schematic diagram of the motor end cover transfer mechanism of the present invention.

[0036] Figure 8 This is a schematic diagram of the motor end cap feeding mechanism of the present invention.

[0037] Figure 9 for Figure 7 An enlarged view of the lifting mechanism.

[0038] Figure 10 for Figure 7 A schematic diagram of the support base.

[0039] Figure 11 This is a schematic diagram of the screw-on part of the motor end cover of the present invention.

[0040] Figure 12 This is a schematic diagram of the screw-on portion of the motor end cover of the present invention from another angle.

[0041] Figure 13 This is a schematic diagram of the structure of the motor end cover of the present invention after the brush holder is installed.

[0042] Figure 14 This is a schematic diagram of the brush holder structure of the present invention.

[0043] Reference numerals: 1. Support plate; 2. Brush holder loading and motor end cover insertion part; 2. Loading mechanism; 21. Vision inspection mechanism; 22. Second limit seat; 221. Third rotary driver; 222. Glue application mechanism; 23. Inclined slide rail; 231. Third limit seat; 232. Fourth rotary driver; 233. Horizontal / vertical conversion mechanism; 24. First limit seat; 241. Gear; 242. Rack; 243. Second pushing mechanism; 244. Slide plate; 245. Fixing plate; 246. Fixing seat; 247. First gripping mechanism; 25. First support plate. Frame 251, First vertical plate 252, Seventh rotary actuator 253, C-groove 254, Sliding member 2541, First movable plate 255, Horizontal fixed guide rail 256, Vertical guide rail 257, First cylinder gripper 258, Worktable 26, First slide rail 261, First pushing mechanism 262, Push plate 263, Motor end cover feeding part 3, Placement plate 31, Mating pin 32, Fixed frame 33, Second bracket 34, Motor end cover transfer mechanism 4, Second slide rail 41, Horizontal plate 42, First slide table 43 44. First lead screw drive assembly; 45. First positioning seat; 451. Positioning pin; 452. First positioning column; 453. First rotary actuator; 5. Motor end cover screw tightening part; 5. Glue dispensing mechanism; 52. Screw tightening mechanism; 53. Unloading conveyor belt; 54. Vertical slide rail; 55. Second movable plate; 56. Second gripping mechanism; 561. Second cylinder gripper; 57. Second vertical plate; 58. Second lead screw drive assembly; 59. Fifth rotary actuator; 61. Rotating plate; 62. Sixth rotary actuator; 63. Support column; 64. Lifting mechanism. 65. Lifting rod, 651. Spreading component, 652. Spreading drive mechanism, 66. Pulling block, 661. Mating hole, 7. Support seat, 71. Receiving groove, 72. Pulley assembly, 73. Push cylinder, 8. Motor end cover positioning part, 8. Press, 81. Third bracket, 82. Positioning pressure head, 83. Displacement notch, 831. Second positioning column, 832. Brush holder, 100. Narrow part of brush holder, 101. Wide part of brush holder, 102. Brush holder body, 103. Screw hole of brush holder, 104. Motor end cover, 200. Housing, 201. End cover screw hole, 202. Detailed Implementation

[0044] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0045] like Figure 14 and Figure 13As shown, the brush holder in this embodiment includes a brush holder body 103 and a brush holder bracket sleeved on the outside of the brush holder body 103. The brush holder bracket includes a wide portion 102 and a narrow portion 101. The cross-sections of both the wide portion 102 and the narrow portion 101 are circular. The diameter of the wide portion 102 is larger than the diameter of the narrow portion 101. A stepped structure is formed between the wide portion 102 and the narrow portion 101. A radially oriented brush holder screw hole 104 is provided on the narrow portion 101. The motor end cover 200 has four radially open mounting holes, which are evenly spaced in a ring. Each mounting hole requires the assembly of one brush holder 100. The outer shell 201 of the mounting hole has an upwardly opening end cover screw hole 202. When installing the brush holder 100 and the motor end cover 200, the brush holder screw hole 104 needs to be aligned with the end cover screw hole 202.

[0046] like Figure 1 As shown, the present invention discloses a brush holder and motor end cover assembly device, including a support plate 1, a motor end cover feeding part 3, a brush holder feeding and motor end cover insertion part 2, and a motor end cover screwing part 5 on the support plate 1, and the aforementioned three parts are connected by a motor end cover transfer mechanism 4.

[0047] like Figure 2 and Figure 3 , Figure 4 As shown, the brush holder feeding and motor end cover insertion part 2 includes a feeding mechanism 21 for feeding the brush holder and a motor end cover positioning part 8 for positioning the motor end cover. The motor end cover positioning part 8 is provided with a first positioning seat 45 for positioning the motor end cover. Between the feeding mechanism 21 and the first positioning seat 45, there are sequentially included a vision inspection mechanism 22, a glue application mechanism 23, and a horizontal / vertical conversion mechanism 24. The feeding mechanism 21, the vision inspection mechanism 22, the glue application mechanism 23, and the horizontal / vertical conversion mechanism 24 are in two groups, located on the left and right sides of the first positioning seat 45, respectively.

[0048] The visual inspection mechanism 22 includes a camera for visually positioning the brush holder and a lighting lamp. The camera is equipped with a vertically arranged second limiting seat 221, which is located in the illumination path of the camera. The lower end of the second limiting seat 221 is connected to a third rotation driver 222 that drives the second limiting seat 221 to rotate. The visual inspection mechanism 22 also includes a processor (not shown in the figure) connected to the camera. The processor is electrically connected to the third driving mechanism 222. The camera takes a picture of the brush holder on the second limiting seat 221, and the processor compares the pictures. When the brush holder screw hole 104 in the picture is aligned with the camera, the third rotation driver 222 drives the second limiting seat 221 to rotate 90°, so that the right brush holder screw hole 104 faces to the right and the left brush holder screw hole 104 faces to the left. After the brush holder is flipped by the horizontal-vertical conversion mechanism, the brush holder screw holes 104 can all face upward, so that they can be aligned with the end cap screw holes 202.

[0049] The second limiting seat 221 includes a column with a rectangular cross-section. The bottom of the column is connected to a platform with a dimension larger than the column itself. A stepped mechanism is formed between the column and the platform, which cooperates with the stepped structure of the brush holder 100. When the brush holder 100 is fitted onto the second limiting seat 221, the inner wall of the brush holder body 103 contacts the outer wall of the column. The column restricts the brush holder 100 from rotating relative to the second limiting seat 221, so that the brush holder 100 rotates synchronously with the second limiting seat 221 as the second limiting seat 221 rotates.

[0050] The glue application mechanism 23 includes a glue application gun located on an inclined slide rail 231. A third limiting seat 232 is fitted to the front of the glue application gun. A fourth rotary driver 233, which drives the third limiting seat 232 to rotate, is located below the third limiting seat 232. The glue application gun moves towards or away from the third limiting seat 232 on the inclined slide rail 231 via a cylinder. The fourth rotary driver 233 drives the third limiting seat 232 to rotate, and the glue application gun applies glue to the brush holder 100, resulting in a ring of sealant on the outer side of the brush holder 100. The third limiting seat 232 and the second limiting seat 221 are the same type of limiting seat.

[0051] The horizontal / vertical conversion mechanism 24 includes a first limiting seat 241, with a fixed seat 247 below the first limiting seat 241. A rotating shaft (not shown in the figure) is fixed to the bottom of the fixed seat 247. The rotating shaft passes through a fixed plate 246 in the front-to-back direction and is rotatably connected to the fixed plate 246. A second rotary driver drives the rotating shaft to rotate. The second rotary driver includes a gear 242, which is fixed to one side of the rotating shaft and meshes with a rack 243. The output end of a second pushing mechanism 244 is fixedly connected to the rack 243, which is located in a rack groove. The second pushing mechanism 244 drives the rack 243 to reciprocate in the left-to-right direction, causing the gear 242 to rotate. The fixed plate 246 and the rack groove are both located on a sliding plate 245, which is slidably fitted onto a first slide rail 261, which is arranged in the left-to-right direction. The workbench 26 has a through-hole structure on the side of the horizontal-vertical conversion mechanism 24. A first pushing mechanism 262 is fixed below the workbench 26. The output end of the first pushing mechanism 262 is connected to a pushing plate 263. The upper surface of the pushing plate 263 is fixed to the slide plate 245.

[0052] The brush holder 100 is mounted on the first limiting seat 241. The second pushing mechanism 244 pushes the rack 243 to move, causing the rotating shaft to rotate. The rotating shaft drives the first limiting seat 241 on the fixed seat 247 to rotate, causing the first limiting seat 241 to move from horizontal to vertical or from vertical to horizontal. When the first limiting seat 241 is horizontal, the first pushing mechanism 262 causes the slide plate 245 to move towards the first positioning seat 45. The first limiting seat 241 and the second limiting seat 221 are the same type of limiting seat.

[0053] like Figure 2 and Figure 5 As shown, the feeding mechanism 21, vision inspection mechanism 22, glue application mechanism 23, and horizontal-vertical conversion mechanism 24 are connected by a first gripping mechanism 25. The first gripping mechanism 25 includes a first support 251, a first vertical plate 252 mounted on the first support 251, a horizontal fixed guide rail 256 mounted on the first vertical plate 252, two vertical guide rails 257 slidingly mounted on the horizontal fixed guide rail 256, and a first movable plate 255 slidingly mounted on the vertical guide rails 257. A seventh rotary actuator 253 is located on the back side of the first movable plate 255. The output end of the seventh rotary actuator 253 (not shown in the figure) is connected to a sliding member 2541, which slides within a C-shaped groove 254 of the first vertical plate 252 and is fixedly connected to the first movable plate 255. When the seventh rotary actuator 253 drives the sliding member 2541 to move along a C-shaped trajectory within the C-shaped groove 254, the first movable plate 255 moves in a jumping motion, overcoming obstacles. Below the first movable plate 255 are three evenly spaced first cylinder grippers 258, each with an arc-shaped opening structure for gripping the brush holder 100.

[0054] like Figure 2 , Figure 6 and Figure 7 As shown, the first positioning seat 45 is located between the two horizontal and vertical conversion mechanisms 24. A first rotary driver 453 that drives the first positioning seat 45 to rotate is connected to the lower part of the first positioning seat 45. The first positioning seat 45 is provided with four positioning pins 451 for cooperating with the process holes of the motor end cover 200. The center of the first positioning seat 45 is provided with a first positioning post 452 for positioning the center hole of the motor end cover. The motor end cover positioning part 8 includes a third bracket 82. A press 81 is provided on the third bracket 82. The lower end of the press 81 is connected to a positioning pressure head 83. The positioning pressure head 83 is located above the first positioning seat 45. The positioning pressure head 83 moves closer to or away from the first positioning seat 45 through the press 81. The center of the positioning pressure head 83 is provided with a second positioning post 832 for extending into the center hole of the motor end cover 200. The positioning pressure head 83 is provided with four clearance notches 831 that are evenly spaced in a ring with the second positioning post 832 as the center. The clearance notches 831 are used to make way for the outer shell 201 of the mounting hole of the motor end cover.

[0055] like Figure 1 and Figure 7 As shown, the motor end cover transfer mechanism 4 includes a horizontal plate 42 extending in the front-back direction. The horizontal plate 42 is provided with a second slide rail 41 extending in the front-back direction. The horizontal plate 42 is provided with a clearance groove extending in the front-back direction, which is used to make way for the first rotary driver 453. A first lead screw drive assembly 44 extending in the front-back direction is provided on the left side of the second slide rail 41. The first lead screw drive assembly 44 drives the first slide table 43 to slide on the second slide rail 41. A first positioning seat 45 is provided on the first slide table 43.

[0056] like Figure 1 , Figure 8 , Figure 9 as well as Figure 10 As shown, a motor end cover loading part 3 is provided on the left side of the motor end cover transfer mechanism 4. The motor end cover loading part 3 includes a second bracket 34 and a fixed frame 33. The fixed frame 33 is provided on the second bracket 34. Multiple placement plates 31 for placing motor end covers are stacked on the fixed frame 33. Each placement plate 31 is arranged vertically at intervals. A first lifting drive mechanism is provided on the second bracket 34. The first lifting drive mechanism is a screw slide. The first lifting drive mechanism is connected to the fixed frame 33 to realize the vertical movement of the fixed frame 33.

[0057] A transfer mechanism for transferring the motor end cover is provided between the motor end cover transfer mechanism 4 and the second bracket 34. The transfer mechanism includes a vertically arranged support column 63 and a rotating plate 61 located at the upper end of the support column 63. The rotating plate 61 is driven to rotate by a sixth rotary driver 62 fixed on the support column 63. A lifting mechanism 64 is provided at one end of the rotating plate 61. The lifting mechanism 64 includes a lifting rod 65. Two opening members 651 are provided at the lower end of the lifting rod 65. The two opening members 651 are arranged opposite to each other. The two opening members 651 move away from each other or towards each other through the opening drive mechanism 652. Each opening member 651 has a columnar structure with the axial direction being transverse. When the two opening members 651 move away from each other, the columnar structure of each opening member 651 enters the mounting hole of the motor end cover from the inside to the outside.

[0058] Each placement plate 31 has a vertical mating pin 32 on its edge side, and a support base 7 for supporting the placement plate 31 is provided below the lifting rod 65; the lifting rod 65 is provided with a pulling block 66 for pulling the placement plate 31 on the fixing frame 33, and the pulling block 66 is provided with a mating hole 661 that mates with the mating pin 32. The support base 7 includes a receiving groove 71 for supporting the placement plate 31, and two pushing cylinders 73 for clamping the placement plate 31 are provided on the groove wall of the receiving groove 71. The support base 7 is also provided with two pulley assemblies 72, which make it easier for the pulling block 66 to pull the placement plate 31 into the receiving groove 71.

[0059] like Figure 1 , Figure 11 and Figure 12 As shown, a motor end cover screwing part 5 is provided on one side of the motor end cover transfer mechanism 4. The motor end cover screwing part 5 includes a dispensing mechanism 51 and a screwing mechanism 52 from left to right. A material conveyor belt 53 is provided on the right side of the screwing mechanism 52. A second gripping mechanism 56 for gripping the motor end cover is provided on the opposite side of the dispensing mechanism 51 and the screwing mechanism 52. The second gripping mechanism 56 includes a second vertical plate 57. A vertical slide rail 54 is provided on the second vertical plate 57. A second movable plate 55 is slidably mounted on the vertical slide rail 54. A second lifting drive mechanism (not shown in the figure) is provided on the second vertical plate 57 to drive the second movable plate 55 to perform lifting and lowering movements. The lower end of the second vertical plate 57 is fixed on the second screw drive assembly 58. Three evenly spaced second cylinder grippers 561 are provided on the second movable plate 55. Each cylinder gripper 561 has two clamping pins that can extend into the motor end cover mounting hole. The clamping pins of each cylinder gripper 561 are arranged opposite each other.

[0060] Both the dispensing mechanism 51 and the screw-tightening mechanism 52 are equipped with a second positioning seat (not shown in the figure) for positioning the motor end cover. The second positioning seat is the same type as the first positioning seat 45. The lower end of each second positioning seat is connected to a fifth rotary driver 59 that drives the second positioning seat to rotate. The dispensing mechanism 51 and the screw-tightening mechanism 52 are both commercially available devices.

[0061] During use, the transfer mechanism and lifting mechanism 64 of the motor end cover feeding section 3 clamp the motor end cover 200 from the support base 7 and transfer it to the motor end cover transfer mechanism 4. The first positioning seat 45 on the motor end cover transfer mechanism 4 receives the motor end cover 200 and moves it to the brush holder feeding and motor end cover loading section 2. Then, the positioning pressure head 83 presses down to hold the motor end cover 200 in place. At the same time, the first gripping mechanism 25 grips the brush holder 100 on the feeding mechanism 21 and moves it to the vision inspection mechanism 22 to position the brush holder screw hole 104. After the first gripping mechanism 25 grips and moves the positioned brush holder 100, glue is applied at the glue application mechanism 23. After the glue application is completed, the first gripping mechanism 25 grips the brush holder 100 and moves it to the horizontal-vertical conversion mechanism 24, converting the vertically oriented brush holder 100 into a horizontally oriented brush holder 100. Then, the first pushing mechanism 262 pushes the brush holder 100 into the mounting hole of the motor end cover 200. At this time, the brush holder screw hole 104 is aligned with the end cover screw hole 202, and two brush holders 100 are pushed into the motor end cover 200 at one time. Then, the positioning pressure head 83 rises, and the first rotary driver 453 rotates the first positioning seat 45 by 90°. The above operation is repeated to push the other two brush holders 100 into the motor end cover 200, thus completing the pre-pressing of all the brush holders 100 in one motor end cover 200.

[0062] Then, the first positioning seat 45 moves to the screw-tightening part 5 of the motor end cover, the second gripping mechanism 56 picks up the motor end cover 200 with the brush holder, and applies glue to the end cover screw hole 202 and the brush holder screw hole 104 of the motor end cover through the glue dispensing mechanism 51. Then, the second gripping mechanism 56 transfers the glued motor end cover to the screw-tightening mechanism 52, and screws into the end cover screw hole 202 and the brush holder screw hole 104 to fix the motor end cover 200 and the brush holder 100 together. Finally, the second gripping mechanism 56 transfers the screwed motor end cover to the unloading conveyor belt 53.

[0063] In the above steps, when the motor end cover 200 with the brush holder is just taken away from the first positioning seat 45 by the second gripping mechanism 56, the lifting mechanism 64 immediately places a motor end cover 200 without the brush holder on the first positioning seat 45, moves it to the brush holder loading and motor end cover loading part 2, and repeats the above operation.

Claims

1. A brush holder and motor end cover assembly device, comprising a first positioning seat for positioning the motor end cover, characterized in that: Below the first positioning seat is a first rotary driver that drives the first positioning seat to rotate. On both sides of the first positioning seat are feeding mechanisms for feeding brush holders. Each feeding mechanism is connected to the first positioning seat by a horizontal-vertical conversion mechanism. The horizontal-vertical conversion mechanism includes a first limiting seat for supporting the brush holder and a second rotary driver that drives the first limiting seat to move horizontally or vertically. The horizontal-vertical conversion mechanism is slidably mounted on a worktable. The worktable is provided with a first pushing mechanism that pushes the horizontal-vertical conversion mechanism toward or away from the first positioning seat. A first gripping mechanism is provided between the feeding mechanism and the horizontal-vertical conversion mechanism. The horizontal-vertical conversion mechanism includes a rotating shaft, which is rotatably connected to a fixed plate. The first limiting seat is fixed to the rotating shaft. One end of the rotating shaft is provided with a gear. A gear meshes with a rack, one end of which is connected to a second pushing mechanism. The second pushing mechanism causes the rack to move closer to or away from the first positioning seat. The first positioning seat has several positioning pins for engaging with the process holes of the motor end cover. The center of the first positioning seat has a first positioning post for positioning the center hole of the motor end cover. A positioning pressure head is provided above the first positioning seat. The positioning pressure head moves closer to or away from the first positioning seat via a press. The center of the positioning pressure head has a second positioning post for extending into the center hole of the motor end cover. The positioning pressure head has several clearance notches evenly spaced in a ring around the second positioning post. The clearance notches are used to make way for the outer shell of the mounting hole of the motor end cover.

2. The brush holder and motor end cap assembly device according to claim 1, characterized in that: Each of the feeding mechanisms is provided with a visual inspection mechanism, which includes a camera for visually inspecting the brush holder. The camera is equipped with a vertically arranged second limiting seat, which is located in the illumination path of the camera. The lower end of the second limiting seat is connected to a third rotary driver that drives the second limiting seat to rotate.

3. The brush holder and motor end cap assembly device according to claim 2, characterized in that: Each of the aforementioned visual inspection mechanisms is provided with an adhesive application mechanism between it and the horizontal-vertical conversion mechanism. The adhesive application mechanism includes an adhesive application gun, which is equipped with a vertically arranged third limiting seat. The lower end of the third limiting seat is connected to a fourth rotary driver that drives the third limiting seat to rotate.

4. The brush holder and motor end cover assembly device according to claim 1, characterized in that: The first positioning seat is provided with a dispensing mechanism and a screw-tightening mechanism on one side. A slide rail is provided between the first positioning seat and the dispensing mechanism and the screw-tightening mechanism, and the first positioning seat is slidably mounted on the slide rail.

5. The brush holder and motor end cover assembly device according to claim 4, characterized in that: The dispensing mechanism and the screw-tightening mechanism are provided with a second gripping mechanism on the opposite side for gripping and transferring the motor end cover, and the screw-tightening mechanism is provided with a conveyor belt for receiving the motor end cover on one side.

6. The brush holder and motor end cap assembly device according to claim 4 or 5, characterized in that: Both the dispensing mechanism and the screw-tightening mechanism are provided with a second positioning seat for positioning the motor end cover, and a fifth rotary driver for driving the second positioning seat to rotate is provided at the lower end of the second positioning seat.

7. The brush holder and motor end cover assembly device according to claim 4, characterized in that: One side of the slide rail is provided with a motor end cover feeding part, which includes a placement plate for placing the motor end cover. One side of the placement plate is provided with a transfer mechanism for transferring the motor end cover. The transfer mechanism includes a vertically arranged support column and a rotating plate located at the upper end of the support column. The rotating plate is driven to rotate by a sixth rotary driver fixed on the support column. One end of the rotating plate is provided with a lifting mechanism. The lower end of the lifting mechanism is provided with two opening members. The two opening members are arranged opposite to each other. The two opening members move away from each other or closer to each other by an opening drive mechanism. Each opening member is used to enter the mounting hole of the motor end cover.

8. The brush holder and motor end cover assembly device according to claim 7, characterized in that: The motor end cover loading part includes a bracket and a fixed frame that is lifted and mounted on the bracket. The fixed frame is raised or lowered by a lifting drive mechanism on the bracket. Several stacked placement plates are mounted on the fixed frame. Each placement plate has a mating pin on its edge side. A support seat for supporting the placement plate is provided below the lifting mechanism. The lifting mechanism has a pulling block for pulling the placement plate. The pulling block has a mating hole that mates with the mating pin.

Images