A precision positioning and pressing device for air conditioner motor housings

Abstract

This invention relates to the field of automated assembly technology, specifically to a precision positioning and pressing device for an air conditioner motor housing. The device includes a first conveyor platform and a second conveyor platform. The first conveyor platform has several No. 1 positioning platforms, and the second conveyor platform has several No. 2 positioning platforms. Both the first and second conveyor platforms are equipped with platform stopping mechanisms. A linear slide is mounted above the two platform stopping mechanisms. A hydraulic arm is mounted on the output end of the linear slide, and a positioning fixture is laterally slidably connected to the output end of the hydraulic arm. The positioning fixture includes telescopic jaws and two positioning arms. Each positioning arm includes a clamping bar. The two clamping bars cause a pair of connecting ears of the motor head end housing and the motor tail end housing to overlap, thereby correcting the position of the motor head end housing. This ensures that the motor shaft insertion hole in the motor head end housing corresponds to the motor shaft in the motor tail end housing, ultimately achieving precise positioning before pressing.

Description

Technical Field

[0001] This invention relates to the field of automated assembly technology, specifically to a precision positioning and pressing device for air conditioner motor housings. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field, which acts on the rotor to form a magnetoelectric torque. Electric motors are classified into DC motors and AC motors according to the power source they use. Most motors in power systems are AC motors, which can be synchronous motors or asynchronous motors.

[0003] Motor assembly is the process of assembling several components into a motor product according to technical requirements and certain precision standards. Motor assembly includes assembly of components such as the stator, rotor, end covers, brush assembly, and bearings, as well as the final assembly of the motor. Final assembly also includes adjusting and measuring the gaps between different parts of the motor, and post-assembly inspection and painting. To ensure the quality of motor assembly, the technical requirements and process specifications must be strictly followed during the assembly process. For the assembly of the housing of an air conditioner motor, this mainly involves pressing the head end cover downwards onto the tail end cover to form a complete motor assembly. In traditional assembly, the complete motor housing is transported separately from the head end housing and the tail end housing, and simultaneously stopped at the pressing position without stopping the two conveying devices. During this process, due to the difference in the overall weight of the carriers supporting the head end housing and the tail end housing, the two carriers will have a slight deviation at the stopping position due to the difference in inertia. This will cause the head end housing and the tail end housing to not be on the same vertical line, which will lead to the misalignment of the motor shaft insertion hole in the head end housing with the motor shaft in the tail end housing during pressing. Ultimately, the motor shaft will damage the head end housing during pressing. Summary of the Invention

[0004] Therefore, it is necessary to provide a precise positioning and pressing device for the housing of an air conditioner motor to address the existing technical problems.

[0005] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows: a precision positioning and pressing device for an air conditioner motor housing, comprising a first conveyor platform and a second conveyor platform that are parallel to each other. The first conveyor platform is provided with several No. 1 positioning platforms for supporting the tail end housing of the motor, and the second conveyor platform is provided with several No. 2 positioning platforms corresponding to the No. 1 positioning platforms for supporting the head end housing of the motor. Each No. 2 positioning platform is provided with a protrusion supporting the head end housing of the motor. Both the first and second conveyor platforms are also provided with platform stopping mechanisms. Each platform stopping mechanism includes a stopping arm and a lifting platform that is drivenly connected to the stopping arm. A support frame is erected above the two platform stopping mechanisms. A linear slide spanning the first and second conveyor platforms has a vertical hydraulic arm at its output end. A positioning fixture is laterally slidably connected to the output end of the hydraulic arm. The positioning fixture includes a telescopic jaw for clamping the motor head end shell and two positioning arms. Each positioning arm includes a clamping bar that can elastically extend and retract. Each clamping bar is divided into a vertical contact part and an arc-shaped guide part from top to bottom. The two clamping bars can move towards each other and clamp the connecting ear on the motor head end shell through the vertical contact part. In this way, when the hydraulic arm descends, the arc-shaped guide part contacts the connecting ear on the motor tail end shell to correct the position of the motor head end shell, so that the motor head end shell is directly opposite the motor tail end shell.

[0006] Furthermore, each positioning fixture also includes a housing and a fixed base inside the housing. The housing is laterally slidably connected to the output end of the hydraulic arm. A vertically oriented hollow shaft is rotatably mounted on the fixed base. A first gear is coaxially fixed to the lower end of the hollow shaft. A vertically oriented stepper motor located inside the housing is fixed to the side of the first gear. A second gear, meshing with the first gear, is coaxially fixed to the output shaft of the stepper motor. Several arc-shaped guide grooves are evenly distributed along the circumference of the first gear. The telescopic gripper includes several telescopic rods that correspond one-to-one with the arc-shaped guide grooves. Each telescopic rod includes a first strip slide fixed to the fixed base and a slide rod slidably disposed in the first strip slide. The length direction of the first strip slide is consistent with the radial direction of the first gear. The end of the slide rod facing the center of the first gear is formed with a guide pin that extends vertically downward into the corresponding arc-shaped guide groove. The other end of the slide rod extends horizontally out of the outer shell, and a vertical clamping plate is fixedly connected to the protruding end of the slide rod. A through hole is provided at the bottom of the outer shell.

[0007] Furthermore, each fixed base includes two horizontal plates spaced vertically apart. The two horizontal plates are connected to each other by a pair of No. 1 vertical connecting plates. Each No. 1 vertical connecting plate is fixed to the inner wall of the outer shell. A hollow rotating shaft is vertically rotatable between the two horizontal plates. The lower end of the hollow rotating shaft passes downward through the lower horizontal plate. A No. 1 gear is coaxially connected to the lower end of the hollow rotating shaft. Each No. 1 strip slide is fixed to the lower horizontal plate. A No. 3 gear located between the two horizontal plates is coaxially fixed to the middle of the hollow rotating shaft. Two symmetrical horizontal racks are slidably connected between the two horizontal plates. The No. 3 gear is located between the two horizontal racks. The length direction of each horizontal rack is consistent with the conveying direction of the first conveyor platform, and each horizontal rack meshes with the No. 3 gear. One end of each horizontal rack passes horizontally through the outer shell. Two positioning clamping arms are respectively connected to the through ends of the two horizontal racks.

[0008] Furthermore, each positioning clamp arm also includes a vertical second strip slide. The upper end of each clamp bar is formed with a first slider that slides within the second strip slide. The second strip slide contains several vertical springs connected end to end by the second slider. The lower end of the lowest vertical spring is fixedly connected to the first slider, and the upper end of the highest vertical spring is fixedly connected to the inner end wall of the second strip slide. Each second strip slide is connected to the protruding end of the corresponding horizontal rack through an elastic connector.

[0009] Furthermore, each elastic connector includes a third strip slide, a horizontal spring, and a connecting block. The third strip slide is horizontal and fixed to the upper end of the corresponding second strip slide. One end of the connecting block is formed with a third slider that slides within the third strip slide. The other end of the connecting block is fixed to the corresponding horizontal rack. The horizontal spring is located within the third strip slide, and both ends of the horizontal spring abut against the inner end wall of the third slider and the third strip slide, respectively.

[0010] Furthermore, the first and second conveyor platforms have the same structure, both including a horizontal support platform and two parallel strip-shaped frames fixed on the horizontal support platform. Each strip-shaped frame has a built-in conveyor belt. Each platform stopping mechanism is located between the corresponding two strip-shaped frames. Each strip-shaped frame has a vertically upward baffle formed on one side. Each baffle has a limiting groove whose length direction is consistent with the conveying direction of the corresponding conveyor belt. Each first and second positioning platform has a limiting slider formed at both ends that slides with the corresponding limiting groove. Each baffle has a vertical receiving groove connected to the corresponding limiting groove at the position near the platform stopping mechanism.

[0011] Furthermore, each horizontal support platform is fixed with a horizontal fixed plate, one end of each stop arm is hinged to one end of the corresponding fixed plate, and the other end of each stop arm is axially connected to two rubber rollers. Each fixed plate is fixed with a hydraulic telescopic cylinder that is inclined and has its output end facing the stop arm. Each stop arm has two symmetrical lugs formed on the side facing the corresponding hydraulic telescopic cylinder. Each lug has a guide groove. Each hydraulic telescopic cylinder has a horizontal guide pin fixed on its output end, with both ends slidingly engaging with the two guide grooves respectively.

[0012] Furthermore, each horizontal support platform is also fixedly equipped with a No. 1 support seat. The top of the No. 1 support seat is slidably connected to two symmetrical vertical slide plates. Each hydraulic telescopic cylinder is located between the two vertical slide plates. Each vertical slide plate has an inclined groove. Each hydraulic telescopic cylinder has a horizontal fixed shaft at its output end. Both ends of the fixed shaft are formed with No. 4 sliders that slide in cooperation with the corresponding inclined grooves. A No. 2 support seat is fixedly installed on the side of the No. 1 support seat. The top of the No. 2 support seat is fixedly equipped with a vertical columnar sleeve. Each lifting platform includes a sliding column that slides in the columnar sleeve and a support platform located on the top of the sliding column. The two vertical slide plates are connected by a No. 2 vertical connecting plate. A horizontal sliding bar is fixedly installed on the No. 2 vertical connecting plate. The columnar sleeve has two vertical grooves for the sliding bar to pass through. The end of the sliding bar facing the columnar sleeve is wedge-fitted with the bottom end of the sliding column.

[0013] The beneficial effects of this invention compared to the prior art are:

[0014] Firstly, the No. 1 and No. 2 positioning platforms of this device are used for the initial positioning of the motor head end shell and the motor tail end shell, respectively, so that the pair of connecting ears of the two correspond in the initial state. Then, when stopping later, since the horizontal distance between the two conveyor platforms is fixed and the displacement distance of the linear slide output end is fixed, the positional deviation of the motor tail end shell and the motor head end shell is controlled in one direction, which is convenient for subsequent correction.

[0015] Secondly, the position of the motor head end shell is corrected by using two clamping strips to make the pair of connecting ears of the motor head end shell and the motor tail end shell coincide. The position of the motor head end shell is corrected to be on the same vertical line as the motor tail end shell, thereby ensuring that the motor shaft insertion hole in the motor head end shell corresponds to the motor shaft in the motor tail end shell, and finally achieving precise positioning before pressing.

[0016] Thirdly, when the connecting lugs on the head end shell and the tail end shell of the motor coincide, the two screw holes on them will also coincide with each other, which makes it easier to install screws in the two screw holes later.

[0017] Fourth, since the telescopic gripper and positioning gripper arm in this device are connected by transmission, when the two grippers clamp a pair of connecting ears on the motor head end shell, the two horizontal racks need to have a displacement capacity while maintaining the existing state of the two grippers so that the telescopic gripper can clamp the motor head end shell. At this time, the elastic connector in this device can meet the displacement capacity of the horizontal racks to prevent the two positioning grippers from moving towards each other until the two grippers clamp a pair of connecting ears on the motor head end shell, but the telescopic gripper does not clamp the motor head end shell. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0019] Figure 2 yes Figure 1 A magnified view of the area indicated by A1 in the diagram;

[0020] Figure 3 yes Figure 1 The enlarged view of the area indicated by A2 in the diagram;

[0021] Figure 4 yes Figure 1 The enlarged view of the area indicated in A3;

[0022] Figure 5 This is a top view of the second conveyor in the embodiment;

[0023] Figure 6 yes Figure 5 Sectional view along line AA;

[0024] Figure 7 yes Figure 6 The enlarged view shown in section A4;

[0025] Figure 8 This is a three-dimensional structural schematic diagram of the platform stopping mechanism in the embodiment;

[0026] Figure 9 yes Figure 5 Sectional view along line BB;

[0027] Figure 10 This is a top view of the first positioning platform in the embodiment;

[0028] Figure 11 yes Figure 10 Sectional view along line CC;

[0029] Figure 12 yes Figure 11 The enlarged view of the area indicated in A5;

[0030] Figure 13This is an exploded three-dimensional view of the positioning fixture in the embodiment;

[0031] Figure 14 This is an exploded three-dimensional view of the telescopic gripper in the embodiment;

[0032] Figure 15 This is a top view of the elastic connector in the embodiment;

[0033] Figure 16 yes Figure 15 A cross-sectional view along line DD.

[0034] The diagram is labeled as follows: 1. First conveyor platform; 2. Second conveyor platform; 3. Positioning platform 1; 4. Positioning platform 2; 5. Boss; 6. Stopping arm; 7. Linear slide; 8. Hydraulic arm; 9. Clamping bar; 10. Vertical contact part; 11. Arc-shaped guide slide; 12. Outer shell; 13. Fixed base; 14. Hollow rotating shaft; 15. Gear 1; 16. Stepper motor; 17. Gear 2; 18. Arc-shaped guide groove; 19. Strip slide 1; 20. Slide rod; 21. Guide pin; 22. Clamping plate; 23. Through hole; 24. Horizontal plate; 25. Vertical connecting plate 1; 26. Gear 3; 27. Horizontal rack; 28. Strip slide 2; 29. ​​Slider 1; 30. Slider 2 31. Vertical spring; 32. No. 3 strip slide; 33. Horizontal spring; 34. Connecting block; 35. No. 3 slider; 36. Horizontal support platform; 37. Strip frame; 38. Conveyor belt; 39. Baffle; 40. Limiting groove; 41. Limiting slider; 42. Vertical receiving groove; 43. Fixed plate; 44. Rubber roller; 45. Hydraulic telescopic cylinder; 46. Guide groove; 47. Guide pin; 48. No. 1 support seat; 49. Vertical slide plate; 50. Inclined groove; 51. Fixed shaft; 52. No. 4 slider; 53. No. 2 support seat; 54. Columnar sleeve; 55. Sliding column; 56. Supporting platform; 57. No. 2 vertical connecting plate; 58. Sliding bar; 59. Vertical groove; 60. Positioning column; 61. Lug. Detailed Implementation

[0035] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0036] refer to Figures 1 to 16The device shown is a precision positioning and pressing device for an air conditioner motor housing, comprising a first conveyor platform 1 and a second conveyor platform 2 that are parallel to each other. The first conveyor platform 1 has several primary positioning platforms 3 for supporting the tail end housing of the motor. The second conveyor platform 2 has several secondary positioning platforms 4 corresponding to the primary positioning platforms 3 and for supporting the head end housing of the motor. Each secondary positioning platform 4 has a protrusion 5 supporting the head end housing of the motor. Both the first conveyor platform 1 and the second conveyor platform 2 are also equipped with platform stopping mechanisms. Each platform stopping mechanism includes a stopping arm 6 and a lifting platform tractor connected to the stopping arm 6. A cross-section of the first and second conveyor platforms is erected above the two platform stopping mechanisms. The linear slide 7 of the conveyor platform 2 has a vertical hydraulic arm 8 at its output end. A positioning fixture is laterally slidably connected to the output end of the hydraulic arm 8. The positioning fixture includes a telescopic jaw for clamping the head end shell of the motor and two positioning clamping arms. Each positioning clamping arm includes a clamping bar 9 that can extend and retract elastically. Each clamping bar 9 is divided into a vertical contact part 10 and an arc-shaped guide part 11 from top to bottom. The two clamping bars 9 can move towards each other and clamp the connecting ear on the head end shell of the motor through the vertical contact part 10. In this way, when the hydraulic arm 8 descends, it contacts the connecting ear on the tail end shell of the motor through the arc-shaped guide part 11 to correct the position of the head end shell of the motor, so that the head end shell of the motor is directly opposite the tail end shell of the motor.

[0037] Before pressing the motor housing 12, the rotor and motor shaft and other parts are installed in the motor tail end housing. During pressing, the motor head end housing is pressed down onto the motor tail end housing. Both the motor tail end housing and the motor head end housing that make up the motor housing 12 are provided with several connecting ears. If the motor head end housing is directly facing the motor tail end housing, then a pair of connecting ears on the motor head end housing must correspond to and completely overlap with a pair of connecting ears on the motor tail end housing. After the connecting ears overlap, the screw holes on them will overlap with each other, which makes it easy to install screws in the two screw holes later. At this time, the motor shaft insertion hole in the motor head end housing corresponds to the motor shaft in the motor tail end housing (excluding the case where the motor housing 12 is defective and the two end housings completely overlap, in which case the connecting ears on them will not completely overlap).

[0038] The motor tail end shell and motor head end shell are initially positioned using positioning platform 3 and positioning platform 4 respectively, ensuring that the connecting ears on them correspond to each other. Since the lateral distance between the first conveyor platform 1 and the second conveyor platform 2 is fixed, the displacement distance of the output end of the linear slide 7 is also fixed. If the motor head end shell is directly pressed onto the motor tail end shell at this time, the connecting ears on them will definitely correspond to each other, and the motor shaft insertion hole in the motor head end shell will correspond to the motor shaft in the motor tail end shell. However, when pressing the motor head end shell onto the motor tail end shell, positioning platform 3 and positioning platform 4 need to be synchronously stopped. During this process, the two stopping rotating arms 6 respectively abut against positioning platform 3 and positioning platform 4. At one end, the two are stopped, and at the same time, the two lifting platforms lift the first positioning platform 3 and the second positioning platform 4 upwards respectively, separating them from the first conveyor platform 1 and the second conveyor platform 2. During this process, the first conveyor platform 1 and the second conveyor platform 2 do not stop. After the first positioning platform 3 and the second positioning platform 4 are lifted by the corresponding lifting platforms, due to the difference in the total weight of the first positioning platform 3 and the second positioning platform 4, their inertia is different, resulting in a slight deviation in their stopping positions. Consequently, the motor head end shell and the motor tail end shell will have a horizontal deviation in position. This horizontal deviation exists in only one direction, and this direction is consistent with the transportation direction of the first conveyor platform 1. The positioning fixture is laterally slidably connected to the hydraulic arm 8, making The positioning fixture can perform horizontal displacement in the same direction as the first conveyor platform 1. At this time, the positioning fixture is used to correct the position of the motor head end shell. In this process, the linear slide 7 drives the hydraulic arm 8 to move laterally to directly above the second positioning platform 4. Then, the hydraulic arm 8 drives the positioning fixture downwards. At this time, the clamping bars 9 will retract against the top of the second positioning platform 4. After the positioning fixture descends a certain distance, the telescopic jaws clamp the motor head end shell. During this process, the two clamping bars 9 will move towards each other and clamp the two connecting ears on the motor head end shell through the two vertical contact parts 10. Afterwards, the hydraulic arm 8 drives the positioning fixture upwards, and the two clamping bars 9 gradually extend out, adhering to the two connecting ears. Because the motor head end shell is clamped by the telescopic jaws... During clamping, the extension and retraction of the two clamping bars 9 do not affect the stability of the telescopic gripper in clamping the motor end housing. Then, the linear slide 7 moves the positioning fixture to directly above the corresponding first positioning platform 3. Next, the hydraulic arm 8 lowers the positioning fixture. During this process, the arc-shaped guide portion 11 of each clamping bar 9 first contacts the connecting ear on the motor tail end housing. Since there is a horizontal distance deviation between the current motor head end housing and the motor tail end housing, when the two clamping bars 9 have descended to a point before contacting the first positioning platform 3, the arc-shaped guide portion 11 abuts against the corresponding connecting ear on the motor tail end housing, applying a lateral force to the positioning fixture. Due to the lateral sliding connection between the positioning fixture and the hydraulic arm 8, the positioning fixture will slide horizontally.The vertical contact portions 10 on the two clamping bars 9 abut against a pair of connecting ears on the tail end shell of the motor. At this point, the horizontal sliding of the positioning clamp eliminates the deviation between the head end shell and the tail end shell of the motor, ensuring they are aligned vertically. The positioning clamp then continues to descend until the head end shell and the tail end shell are in contact, ultimately achieving precise positioning and pressing of the motor housing 12.

[0039] When placing the motor tail end shell and the motor head end shell onto the first positioning platform 3 and the second positioning platform 4 respectively, since the opening of the motor tail end shell faces upward and the opening of the motor head end shell faces downward, if the motor head end shell is placed directly on the second positioning platform 4, several connecting ears on the motor head end shell will fit against the top of the second positioning platform 4. Therefore, when the two clamping bars 9 move towards each other, due to the existence of the arc-shaped guide slide part 11, the two clamping bars 9 cannot clamp the corresponding connecting ears on the motor head end shell by vertical contact. So, the boss 5 lifts the motor head end shell upward and spaces it at a certain distance from the second positioning platform 4 in the vertical direction, so that the two clamping bars 9 can clamp the connecting ears on the motor head end shell in the subsequent process.

[0040] To enable the telescopic grippers in the positioning fixture to hold the end shell of the motor head, the following features are specifically designed:

[0041] Each positioning fixture also includes a housing 12 and a fixed base 13 disposed within the housing 12. The housing 12 is laterally slidably connected to the output end of the hydraulic arm 8. A vertically oriented hollow shaft 14 is rotatably mounted on the fixed base 13. A first gear 15 is coaxially fixed to the lower end of the hollow shaft 14. A vertically oriented stepper motor 16 located inside the housing 12 is fixed to the side of the first gear 15. A second gear 17, meshing with the first gear 15, is coaxially fixed to the output shaft of the stepper motor 16. Several arc-shaped guide grooves 18 are evenly distributed along the circumference of the first gear 15. The retractable gripper includes several telescopic rods that correspond one-to-one with the arc-shaped guide grooves 18. Each telescopic rod includes a first strip slide 19 fixedly connected to the fixed base 13 and a slide rod 20 slidably disposed in the first strip slide 19. The length direction of the first strip slide 19 is consistent with the radial direction of the first gear 15. One end of the slide rod 20 facing the center of the first gear 15 is formed with a guide pin 21 that extends vertically downward into the corresponding arc-shaped guide groove 18. The other end of the slide rod 20 extends horizontally out of the outer shell 12, and a vertical clamping plate 22 is fixedly connected to the protruding end of the slide rod 20. A through hole 23 is provided at the bottom of the outer shell 12.

[0042] When the stepper motor 16 is started, the stepper motor 16 will drive the second gear 17 to rotate the first gear 15. After the first gear 15 rotates, each guide pin 21 will slide in the corresponding arc-shaped guide groove 18. Since the slide rod 20 is limited by the first strip slide 19 which is fixed to the fixed seat 13, the slide rod 20 will extend and retract along the radial direction of the first gear 15, and several slide rods 20 will move synchronously. When several slide rods 20 retract inward, they will clamp the motor head end shell through several clamping plates 22. Conversely, when several slide rods 20 extend outward, several clamping plates 22 will release the clamped motor head end shell.

[0043] The hollow shaft 14 is used for the motor shaft located in the tail end housing of the motor to pass upward during pressing. Similarly, the through hole 23 is used for the motor shaft located in the tail end housing of the motor to pass upward.

[0044] To achieve the transmission connection between the telescopic gripper and the two positioning arms, and to determine how the two positioning arms move towards each other, the following features are specifically designed:

[0045] Each fixed base 13 includes two horizontal plates 24 spaced vertically apart. The two horizontal plates 24 are connected to each other by a pair of vertical connecting plates 25. Each vertical connecting plate 25 is fixedly connected to the inner wall of the outer casing 12. A hollow rotating shaft 14 is vertically rotatable between the two horizontal plates 24. The lower end of the hollow rotating shaft 14 passes downward through the lower horizontal plate 24. A gear 15 is coaxially connected to the lower end of the hollow rotating shaft 14. Each strip-shaped slide 19 is fixedly connected to the lower horizontal plate 24. The hollow rotating shaft 14... A third gear 26 is coaxially fixed in the middle of the machine and located between two horizontal plates 24. Two horizontal racks 27 in a symmetrical state are slidably connected between the two horizontal plates 24. The third gear 26 is located between the two horizontal racks 27. The length direction of each horizontal rack 27 is consistent with the conveying direction of the first conveyor platform 1, and each horizontal rack 27 meshes with the third gear 26. One end of each horizontal rack 27 extends horizontally out of the outer shell 12. Two positioning clamping arms are respectively connected to the protruding ends of the two horizontal racks 27.

[0046] When the hollow shaft 14 rotates with the No. 3 gear 26, the two horizontal racks 27 that mesh with the No. 3 gear 26 will drive the two positioning clamping arms to move horizontally in opposite directions, thereby clamping the pair of connecting ears on the head end of the motor after the two positioning clamping arms move in opposite directions.

[0047] To achieve the elastic expansion and contraction of the clamping strip 9, the following features are specifically designed:

[0048] Each positioning clamp arm also includes a vertical second strip slide 28. The upper end of each clamping bar 9 is formed with a first slider 29 that slides within the second strip slide 28. The second strip slide 28 contains several vertical springs 31 connected end to end by the second sliders 30. The lower end of the lowest vertical spring 31 is fixedly connected to the first slider 29, and the upper end of the highest vertical spring 31 is fixedly connected to the inner end wall of the second strip slide 28. Each second strip slide 28 is connected to the protruding end of the corresponding horizontal rack 27 through an elastic connector.

[0049] When each clamping bar 9 descends to contact the first positioning platform 1 or the second positioning platform 2, each clamping bar 9 contacts the corresponding vertical spring 31 through the first slider 29, causing several vertical springs 31 to be compressed synchronously to generate elastic force. When the clamping bar 9 loses contact, the elastic force released by several vertical springs 31 pushes the first slider 29 downward to return it to its original position. Since the second strip slide 28 is relatively long, if a single spring is used to contact the first slider 29, the excessively long spring will reduce its elasticity due to repeated elastic deformation. Furthermore, when the arc-shaped guide slide 11 on the clamping bar 9 contacts the connecting lug on the motor tail end shell, the clamping bar 9 needs to have a downward elastic force to counteract the reaction force. Therefore, several shorter vertical springs 31 are used to enhance the stiffness coefficient of each vertical spring 31, thereby ensuring that the arc-shaped guide slide 11 of the clamping bar 9 does not slide upward when it contacts the connecting lug on the motor tail end shell.

[0050] Since the telescopic gripper is connected to the two positioning grippers via a transmission, the following situation may occur:

[0051] 1. The telescopic gripper has already clamped the motor head end shell, but the two positioning grippers have not yet moved to the point where the two gripping bars 9 clamp the pair of connecting ears on the motor head end shell;

[0052] 2. The two positioning clamping arms move towards each other until the two clamping bars 9 clamp a pair of connecting ears on the motor head end shell, but the telescopic jaws do not clamp the motor head end shell.

[0053] Therefore, to solve the above problems, an elastic connector is set up. When the stepper motor 16 starts, the hollow rotating shaft 14 drives the third gear 26 and the first gear 15 to rotate synchronously. During this process, the third gear 26 drives the two horizontal racks 27 to drive the two clamping bars 9 to first clamp a pair of connecting ears on the motor head end shell. Then, the first gear 15 drives several sliding rods 20 to retract synchronously and clamp the motor head end shell through the corresponding clamping plates 22. Since the two clamping bars 9 have already clamped a pair of connecting ears, and the third gear 26 will also rotate when the first gear 15 rotates, the two horizontal racks 27 need to have a displacement capacity while the two clamping bars 9 maintain their current state. At this time, the elastic connector is used to meet the displacement capacity of the corresponding horizontal racks 27.

[0054] To achieve the function of the flexible connector, the following features are specifically designed:

[0055] Each elastic connector includes a third strip slide 32, a horizontal spring 33, and a connecting block 34. The third strip slide 32 is horizontal and fixed to the upper end of the corresponding second strip slide 28. One end of the connecting block 34 is formed with a third slider 35 that slides within the third strip slide 32. The other end of the connecting block 34 is fixed to the corresponding horizontal rack 27. The horizontal spring 33 is located within the third strip slide 32, and both ends of the horizontal spring 33 abut against the third slider 35 and the inner end wall of the third strip slide 32, respectively.

[0056] In the initial state, the horizontal spring 33 is fully released. When the two horizontal racks 27 move towards each other, the two elastic connectors drive the two second-order strip slides 28 to move towards each other. Once each second-order strip slide 28 moves to the point where the clamping bar 9 abuts against the connecting ear on the motor head end shell, the first gear 15 continues to rotate in order to extend and retract the gripper to clamp the motor head end shell. The third gear 26, which is coaxially connected to the first gear 15 through the hollow rotating shaft 14, will continue to drive the two horizontal racks 27 to continue moving towards each other. At this time, each horizontal rack 27 will drive the corresponding connecting block 34 to compress the third slider 35, thereby satisfying the displacement capacity of the corresponding horizontal rack 27 through the elastic extension and retraction of the horizontal spring 33.

[0057] To prevent the No. 1 positioning platform 3 and the No. 2 positioning platform 4 from tipping over due to inertia when stopped by the two platform stopping mechanisms respectively, the following features are specifically designed:

[0058] The first conveyor platform 1 and the second conveyor platform 2 have the same structure, both including a horizontal support platform 36 and two parallel strip-shaped frames 37 fixed on the horizontal support platform 36. Each strip-shaped frame 37 has a built-in conveyor belt 38. Each platform stopping mechanism is located between the corresponding two strip-shaped frames 37. Each strip-shaped frame 37 has a vertically upward baffle 39 formed on one side. Each baffle 39 has a limiting groove 40 whose length direction is consistent with the conveying direction of the corresponding conveyor belt 38. Each first positioning platform 3 and second positioning platform 4 has a limiting slider 41 formed at both ends that slides with the corresponding limiting groove 40. Each baffle 39 has a vertical receiving groove 42 connected to the corresponding limiting groove 40 at the position near the platform stopping mechanism.

[0059] The two conveyor belts 38 of the first conveyor platform 1 correspond to the two ends of the first positioning platform 3, and the two conveyor belts 38 of the second conveyor platform 2 correspond to the two ends of the second positioning platform 4. Through the limiting cooperation of the limiting slider 41 and the limiting groove 40, the first positioning platform 3 and the second positioning platform 4 will not tip over due to inertia at the moment they are stopped. At the same time, when the first positioning platform 3 and the second positioning platform 4 are lifted by the corresponding lifting platform, the corresponding limiting slider 41 is accommodated by the vertical receiving groove 42.

[0060] To achieve the stop function of the boom 6, the following features are specifically set:

[0061] Each horizontal support platform 36 is fixed with a horizontal fixed plate 43. One end of each stop arm 6 is hinged to one end of the corresponding fixed plate 43. The other end of each stop arm 6 is axially connected to two rubber rollers 44. Each fixed plate 43 is fixed with a hydraulic telescopic cylinder 45 that is inclined and has its output end facing the stop arm 6. Each stop arm 6 has two symmetrical lugs 61 formed on the side facing the corresponding hydraulic telescopic cylinder 45. Each lug 61 has a guide groove 46. Each hydraulic telescopic cylinder 45 has a horizontal guide pin 47 that slides with the two guide grooves 46 at both ends.

[0062] Since the movement processes of positioning platform 3 and positioning platform 4 being transported and stopped are the same, positioning platform 3 is used as an example here, and positioning platform 4 is the same as positioning platform 3.

[0063] The rotation of the stop arm 6 is controlled by the hydraulic telescopic cylinder 45. When the output end of the hydraulic telescopic cylinder 45 extends, the guide pin 47 slides upward in the guide groove 46 and thereby abuts the entire stop arm 6 to rotate upward. When the first positioning platform 3 moves to one side and abuts against the two rubber rollers 44, the first positioning platform 3 will be stopped by the two rubber rollers 44.

[0064] Each conveyor belt 38 is a top roller conveyor chain. When the first positioning platform 3 presses onto the conveyor belt 38, since the conveyor belt 38 is only subjected to the downward gravity of the first positioning platform 3, the top rollers in the conveyor belt 38 will not rotate. At this time, each conveyor belt 38 will drive one end of the first positioning platform 3 to move. When the first positioning platform 3 is stopped, the conveyor belt 38 continues to move. At this time, the top rollers in the conveyor belt 38 will rotate after contacting the bottom of the first positioning platform 3, so that the first positioning platform 3 loses the driving force for forward movement, ensuring the stability of the first positioning platform 3 when it is stopped. After the first positioning platform 3 is stopped, it is lifted by a lifting platform, and then the hydraulic system... When the output end of the telescopic cylinder 45 retracts, it will drive the stop arm 6 to rotate downwards, and at the same time the lifting platform will gradually descend. During this process, since the two rubber rollers 44 will abut against one side of the first positioning platform 3 and rotate downwards, the first positioning platform 3 will be abutted by the two rubber rollers 44 and move backwards at a micro distance while descending. At this time, each limiting slider 41 on the first positioning platform 3 is located in the corresponding vertical receiving groove 42. In order to prevent the limiting slider 41 from abutting against the inner wall of the vertical receiving groove 42, the length of the limiting slider 41 needs to be less than the length of the vertical receiving groove 42, so that the limiting slider 41 can have a wide capacity for left and right displacement when descending.

[0065] When one of the No. 1 positioning platforms 3 is stopped, since the No. 1 conveyor platform 1 does not stop, the following No. 1 positioning platforms 3 will collide with the stopped No. 1 positioning platform 3. However, since the conveyor belt 38 uses a top roller conveyor chain, the stopped No. 1 positioning platform 3 will not have forward driving force, so it will not affect the pressing process.

[0066] To achieve the transmission connection between the lifting platform and the stop boom 6, the following features are specifically designed:

[0067] Each horizontal support platform 36 is also fixedly equipped with a No. 1 support seat 48. Two symmetrical vertical sliding plates 49 are slidably connected to the top of the No. 1 support seat 48. Each hydraulic telescopic cylinder 45 is located between the two vertical sliding plates 49. Each vertical sliding plate 49 has a sloping groove 50. Each hydraulic telescopic cylinder 45 has a horizontal fixed shaft 51 at its output end. Both ends of the fixed shaft 51 are formed with No. 4 sliders 52 that slide in cooperation with the corresponding sloping grooves 50. Two... The top of the first support 53 is fixedly provided with a vertical columnar sleeve 54. Each lifting platform includes a sliding column 55 that slides in the columnar sleeve 54 and a support platform 56 located on the top of the sliding column 55. The two vertical sliding plates 49 are connected by a second vertical connecting plate 57. A horizontal sliding bar 58 is fixedly provided on the second vertical connecting plate 57. The columnar sleeve 54 has two vertical grooves 59 for the sliding bar 58 to pass through. The end of the sliding bar 58 facing the columnar sleeve 54 is wedge-fitted with the bottom end of the sliding column 55.

[0068] Since both the No. 1 positioning platform 3 and the No. 2 positioning platform 4 are stopped by two platform stopping mechanisms with the same structure, the No. 1 positioning platform 3 is used as an example here, and the No. 2 positioning platform 4 is the same as the No. 1 positioning platform 3.

[0069] When the hydraulic telescopic cylinder 45 extends, it has two displacements. The first displacement drives the stop arm 6 to rotate upward, which is used to stop the first positioning platform 3. During the first displacement of the hydraulic telescopic cylinder 45, the two vertical slide plates 49 are driven to move horizontally away from the columnar sleeve 54 through the sliding engagement of the two fourth sliders 52 and the two inclined grooves 50. At this time, the bottom end of the sliding column 55 will be gradually pushed into the columnar sleeve 54 through the wedge engagement with the sliding strip 58. However, at this time, the support platform 56 set on the top of the sliding column 55 does not contact the column. At the bottom of the first positioning platform 3, after the first positioning platform 3 stops, the hydraulic telescopic cylinder 45 performs a second end displacement. At this time, the output end of the hydraulic telescopic cylinder 45 extends slightly, and the stop arm 6 will rotate upward but is still in the state of stopping the first positioning platform 3. At the same time, the slide bar 58 is driven by the two vertical slide plates 49 to continue to move away from the columnar sleeve 54. During this process, the slide column 55 will be pushed to the highest point by the slide bar 58 through the wedge engagement. The supporting platform 56 will touch the bottom of the first positioning platform 3 upward and lift the first positioning platform 3.

[0070] After the motor housing 12 is pressed, the retraction of the output end of the hydraulic telescopic cylinder 45 drives the stop arm 6 to rotate downward, and at the same time drives the two vertical slide plates 49 to move towards the columnar sleeve 54. As a result, the slide column 55 will gradually descend inside the columnar sleeve 54, eventually causing the support platform 56 to separate from the bottom of the first positioning platform 3, until both ends of the first positioning platform 3 come into contact with the two conveyor belts 38.

[0071] Working principle:

[0072] Several positioning posts 60 can be set on positioning platform 3 and positioning platform 4 respectively to initially position the motor tail end shell and the motor head end shell, so that the connecting ears on them correspond to each other. When positioning platform 3 and positioning platform 4 are stopped at the same time, the hydraulic arm 8 is moved horizontally to directly above positioning platform 4 by the linear slide 7. Then, the outer shell 12 is moved down by the hydraulic arm 8. At this time, the clamping bar 9 will abut against the top of positioning platform 4 and retract. When the outer shell 12 has descended to a certain distance, the stepper motor 16 is started to drive gear 15 and gear 26 to rotate synchronously. The rotation of gear 15 drives several sliding rods 20 to retract, and several clamping plates 22 clamp the motor head end shell. The synchronous rotation of gear 26 drives two clamping bars 9 to move towards each other and clamp the two connecting ears on the motor head end shell. After that, the outer shell 12 is moved to the opposite position by the linear slide 7. The first positioning platform 3 is directly above the first positioning platform 3. Then, the hydraulic arm 8 drives the outer shell 12 to descend. During this process, the arc-shaped guide part 11 of each clamping bar 9 will first contact the connecting ear on the motor tail end shell. Since there is a horizontal distance deviation between the current motor head end shell and the motor tail end shell, when the two clamping bars 9 descend to the point where they have not yet contacted the first positioning platform 3, the arc-shaped guide part 11 abuts against the corresponding connecting ear on the motor tail end shell, giving the outer shell 12 a lateral force. Since the outer shell 12 and the hydraulic arm 8 are laterally sliding, the outer shell 12 will slide horizontally until the vertical contact part 10 on the two clamping bars 9 abuts against a pair of connecting ears on the motor tail end shell. At this time, the motor head end shell and the motor tail end shell are on the same vertical line. After that, the outer shell 12 continues to descend until the motor head end shell and the motor tail end shell fit together, finally achieving precise positioning and pressing of the motor outer shell 12.

[0073] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A precision positioning and pressing device for air conditioner motor housings, characterized in that, The system includes a first conveyor platform (1) and a second conveyor platform (2) that are parallel to each other. The first conveyor platform (1) is provided with several No. 1 positioning platforms (3) for carrying the tail end shell of the motor. The second conveyor platform (2) is provided with several No. 2 positioning platforms (4) that correspond to the No. 1 positioning platforms (3) and are used to carry the head end shell of the motor. Each No. 2 positioning platform (4) is provided with a boss (5) for supporting the head end shell of the motor. The first conveyor platform (1) and the second conveyor platform (2) are also provided with platform stopping mechanisms. Each platform stopping mechanism includes a stopping arm (6) and a lifting platform that is drivenly connected to the stopping arm (6). A straight line spanning the first conveyor platform (1) and the second conveyor platform (2) is erected above the two platform stopping mechanisms. The linear slide (7) has a vertical hydraulic arm (8) at its output end. A positioning clamp is slidably connected to the output end of the hydraulic arm (8). The positioning clamp includes a telescopic jaw for clamping the head end shell of the motor and two positioning clamp arms. Each positioning clamp arm includes a clamping bar (9) that can stretch and extend elastically. Each clamping bar (9) is divided into a vertical contact part (10) and an arc-shaped guide part (11) from top to bottom. The two clamping bars (9) can move towards each other and clamp the connecting ear on the head end shell of the motor through the vertical contact part (10). When the hydraulic arm (8) descends, it contacts the connecting ear on the tail end shell of the motor through the arc-shaped guide part (11) to correct the position of the head end shell of the motor so that the head end shell of the motor is facing the tail end shell of the motor. The first conveyor platform (1) and the second conveyor platform (2) have the same structure. They both include a horizontal support platform (36) and two parallel strip-shaped frames (37) fixed on the horizontal support platform (36). Each strip-shaped frame (37) has a built-in conveyor belt (38). Each platform stopping mechanism is located between the two corresponding strip-shaped frames (37). Each strip-shaped frame (37) has a vertically upward baffle (39) formed on one side. Each baffle (39) has a limiting groove (40) whose length direction is consistent with the conveying direction of the corresponding conveyor belt (38). Each first positioning platform (3) and second positioning platform (4) has a limiting slider (41) formed at both ends that slides with the corresponding limiting groove (40). Each baffle (39) has a vertical receiving groove (42) connected to the corresponding limiting groove (40) at the position near the platform stopping mechanism. Each horizontal support platform (36) is fixed with a horizontal fixed plate (43). One end of each stop arm (6) is hinged to one end of the corresponding fixed plate (43). The other end of each stop arm (6) is axially connected to two rubber rollers (44). Each fixed plate (43) is fixed with a hydraulic telescopic cylinder (45) in an inclined state with its output end facing the stop arm (6). Each stop arm (6) has two symmetrical lugs (61) formed on the side facing the corresponding hydraulic telescopic cylinder (45). Each lug (61) has a guide groove (46). Each hydraulic telescopic cylinder (45) has a horizontal guide pin (47) fixed on its output end, with both ends slidingly engaged with the two guide grooves (46).

2. The precision positioning and pressing device for an air conditioner motor housing according to claim 1, characterized in that, Each positioning fixture also includes a housing (12) and a fixed seat (13) located inside the housing (12). The housing (12) is laterally slidably connected to the output end of the hydraulic arm (8). A vertically oriented hollow shaft (14) is rotatably mounted on the fixed seat (13). A first gear (15) is coaxially fixed to the lower end of the hollow shaft (14). A stepper motor (16) located inside the housing (12) and oriented vertically is fixed to the side of the first gear (15). A second gear (17) that meshes with the first gear (15) is coaxially fixed to the output shaft of the stepper motor (16). Several arc-shaped guide grooves (18) are evenly distributed along the circumference of the first gear (15) on the first gear (15). The telescopic gripper includes several telescopic rods that correspond one-to-one with the arc-shaped guide grooves (18). Each telescopic rod includes a first strip slide (19) fixedly connected to the fixed seat (13) and a slide rod (20) slidably disposed in the first strip slide (19). The length direction of the first strip slide (19) is consistent with the radial direction of the first gear (15). The end of the slide rod (20) facing the center of the first gear (15) is formed with a guide pin (21) that extends vertically downward into the corresponding arc-shaped guide groove (18). The other end of the slide rod (20) extends horizontally out of the outer shell (12), and a vertical clamping plate (22) is fixedly connected to the end of the slide rod (20). A through hole (23) is provided at the bottom of the outer shell (12).

3. The precision positioning and pressing device for an air conditioner motor housing according to claim 2, characterized in that, Each fixed base (13) includes two horizontal plates (24) spaced vertically apart. The two horizontal plates (24) are connected to each other by a pair of vertical connecting plates (25). Each vertical connecting plate (25) is fixed to the inner wall of the outer shell (12). A hollow rotating shaft (14) is vertically rotatable between the two horizontal plates (24). The lower end of the hollow rotating shaft (14) passes downward through the lower horizontal plate (24). A gear (15) is coaxially connected to the lower end of the hollow rotating shaft (14). Each strip slide (19) is fixed to the lower horizontal plate (24). The hollow rotating shaft (14) 4) A No. 3 gear (26) is coaxially fixed in the middle between two horizontal plates (24). Two horizontal racks (27) in a symmetrical state are slidably connected between the two horizontal plates (24). The No. 3 gear (26) is located between the two horizontal racks (27). The length direction of each horizontal rack (27) is consistent with the conveying direction of the first conveyor platform (1). Each horizontal rack (27) meshes with the No. 3 gear (26). One end of each horizontal rack (27) extends horizontally out of the outer shell (12). Two positioning clamps are connected to the protruding ends of the two horizontal racks (27) respectively.

4. The precision positioning and pressing device for an air conditioner motor housing according to claim 3, characterized in that, Each positioning arm also includes a vertical second strip slide (28). The upper end of each clamping bar (9) is formed with a first slider (29) that slides inside the second strip slide (28). The second strip slide (28) is provided with several vertical springs (31) connected end to end by the second slider (30). The lower end of the lowest vertical spring (31) is fixed to the first slider (29), and the upper end of the highest vertical spring (31) is fixed to the inner end wall of the second strip slide (28). Each second strip slide (28) is connected to the protruding end of the corresponding horizontal rack (27) through an elastic connector.

5. A precision positioning and pressing device for an air conditioner motor housing according to claim 4, characterized in that, Each elastic connector includes a third strip slide (32), a horizontal spring (33), and a connecting block (34). The third strip slide (32) is horizontal and fixed to the upper end of the corresponding second strip slide (28). One end of the connecting block (34) is formed with a third slider (35) that slides in the third strip slide (32). The other end of the connecting block (34) is fixed to the corresponding horizontal rack (27). The horizontal spring (33) is located in the third strip slide (32). The two ends of the horizontal spring (33) abut against the inner end wall of the third slider (35) and the third strip slide (32), respectively.

6. The precision positioning and pressing device for an air conditioner motor housing according to claim 1, characterized in that, Each horizontal support platform (36) is also fixedly provided with a No. 1 support seat (48). The top of the No. 1 support seat (48) is slidably connected to two vertical sliding plates (49) in a symmetrical state. Each hydraulic telescopic cylinder (45) is located between the two vertical sliding plates (49). Each vertical sliding plate (49) is provided with a sloping groove (50). Each hydraulic telescopic cylinder (45) is provided with a horizontal fixed shaft (51) at its output end. Both ends of the fixed shaft (51) are formed with No. 4 sliders (52) that slide in cooperation with the corresponding sloping grooves (50). A No. 2 support is fixedly provided on the side of the No. 1 support seat (48). The top of the second support seat (53) is fixedly provided with a vertical column sleeve (54). Each lifting platform includes a sliding column (55) that slides in the column sleeve (54) and a support platform (56) located on the top of the sliding column (55). The two vertical sliding plates (49) are connected by a second vertical connecting plate (57). A horizontal sliding bar (58) is fixedly provided on the second vertical connecting plate (57). The column sleeve (54) has two vertical grooves (59) for the sliding bar (58) to pass through. The end of the sliding bar (58) facing the column sleeve (54) is wedge-fitted with the bottom end of the sliding column (55).

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