A motor automatic assembly production line

Abstract

The present invention relates to an automatic motor assembly production line, comprising a front cover bearing straightening device, a rear cover bearing straightening device, a rotor feeding line, a stator detection device, a motor assembly device, an automatic screw locking device and a knocking test device; the front cover bearing straightening device, the rear cover bearing straightening device, the rotor feeding line and the stator detection device are arranged around the motor assembly device, the automatic screw locking device is located at the next process position of the motor assembly device, and the knocking test device is located at the next process position of the automatic screw locking device. The present invention straightens the front and rear covers and detects the stator respectively by including a front cover bearing straightening device, a rear cover bearing straightening device and a stator detection device, and re-calibrates and tests the motor after assembly through the knocking test device and the comprehensive test device, which includes the calibration, assembly and detection processes, greatly reduces the labor cost, and improves the productivity and product yield.

Description

Technical Field

[0001] The invention relates to the field of motor assembly, and in particular to an automatic motor assembly production line. Background Art

[0002] An electric motor, commonly known as a "motor", is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. A motor is usually composed of a stator, a rotor, and front and rear covers.

[0003] In the prior art, the form of the motor assembly production line is usually to transmit motor parts through the conveyor belt of the production line, and the workers manually assemble the motor products beside the production line. Such assembly production lines occupy a large area, have a low degree of automation, high production costs, and low production efficiency. In order to solve the above problems, automatic assembly lines for motors have appeared on the market. Although such automatic assembly lines have a certain degree of automation, they are not perfect and lack automatic correction and detection processes, resulting in a low yield rate of the motors produced. Summary of the invention

[0004] Based on this, the object of the present invention is to provide a motor automatic assembly production line with high production efficiency and high yield.

[0005] A motor automatic assembly production line, characterized in that it includes a front cover bearing straightening device, a rear cover bearing straightening device, a rotor feeding line, a stator detection device, a motor assembly device, an automatic screw locking device and a knocking test device; the front cover bearing straightening device, the rear cover bearing straightening device, the rotor feeding line and the stator detection device are arranged around the motor assembly device, the automatic screw locking device is located at the next process position of the motor assembly device, and the knocking test device is located at the next process position of the automatic screw locking device; a rotor outer diameter detection mechanism is also arranged between the rotor feeding line and the electronic assembly device; the stator detection device includes a stator conveying mechanism, a camera mechanism and an image processor; the stator conveying mechanism includes at least one stator accommodating portion, the accommodating portion is provided with a longitudinal through hole, and its diameter is greater than the outer diameter of the stator coil winding; the camera mechanism includes a top surface camera assembly and a bottom surface camera assembly, and the top surface camera assembly and the bottom surface camera assembly each include a camera, which are respectively arranged above and below the accommodating portion; the camera is electrically connected to the input end of the image processor respectively;

[0006] The tapping test device includes a conveying part, a tapping part and a testing part, and the tapping part and the testing part are arranged in sequence above the conveying part; the tapping part includes a frame, a clamping mechanism, a lifting mechanism and a tapping mechanism, and the tapping mechanism is hoisted on the frame and suspended in the air; the clamping mechanism is arranged below the tapping mechanism, and the lifting mechanism is drivingly connected to the clamping mechanism, and can drive the clamping mechanism to perform lifting and lowering movements between the conveying part and the tapping mechanism. When the clamping mechanism rises to the tapping position, the tapping end of the tapping mechanism faces the edge of the upper end surface of the motor; the testing part includes a torque testing mechanism and a movement testing mechanism.

[0007] As a further improvement to the above-mentioned motor automatic assembly production line, a rotor outer diameter detection mechanism is further provided between the rotor feeding line and the electronic assembly device.

[0008] As a further improvement of the above-mentioned motor automatic assembly production line, a transfer mechanism for temporarily storing the motor is also provided between the motor assembly device and the automatic screw locking device.

[0009] As a further improvement of the above-mentioned motor automatic assembly production line, it also includes a comprehensive testing device, which is located at the next process position of the knocking test device.

[0010] As a further improvement of the above-mentioned motor automatic assembly production line, robots are provided between the front cover bearing straightening device, the rear cover bearing straightening device, the rotor loading line, the stator detection device, and the transfer mechanism and the motor assembly mechanism, between the transfer mechanism and the automatic screw locking device, and between the tapping test device and the comprehensive test device.

[0011] As a further improvement of the above-mentioned motor automatic assembly production line, the front cover bearing straightening device includes at least one front cover fixture, a straightening fixture, a fixture conveying mechanism and a lifting mechanism; the front cover fixture is fixed on the fixture conveying mechanism, and the upper end surface of the front cover fixture is the first clamping surface; the straightening fixture is arranged above the fixture conveying mechanism, and the lower end surface of the straightening fixture is the second clamping surface, and the lifting mechanism drives the straightening fixture to be pressed down or raised.

[0012] As a further improvement of the above-mentioned motor automatic assembly production line, the rear cover bearing straightening device includes at least one rear cover fixture, a pressing fixture, a bearing straightening fixture, a pressing guide assembly, a straightening shaft guide assembly and a fixture conveying mechanism; the rear cover fixture is arranged on the fixture conveying mechanism, the pressing fixture and the bearing straightening fixture are both arranged above the fixture conveying mechanism, the pressing guide assembly drives the pressing fixture to press down or rise, and the straightening shaft guide assembly drives the bearing straightening fixture to press down or rise.

[0013] As a further improvement of the above-mentioned motor automatic assembly production line, the stator detection device includes a stator conveying mechanism, a photographing mechanism and an image processor; the stator conveying mechanism includes at least one stator accommodating portion, the accommodating portion is provided with a longitudinal through hole, and its diameter is larger than the outer diameter of the stator coil winding; the photographing mechanism includes a top surface photographing component and a bottom surface photographing component, and the top surface photographing component and the ground photographing component both include a camera, which are respectively arranged above and below the accommodating portion; the two cameras are respectively electrically connected to the input end of the image processor.

[0014] As a further improvement of the above-mentioned motor automatic assembly production line, the automatic screw locking device includes an automatic screw blowing mechanism, an automatic locking mechanism and an automatic nut loading mechanism, and the automatic screw blowing mechanism, automatic locking mechanism and automatic nut loading mechanism are arranged in sequence.

[0015] As a further improvement of the above-mentioned motor automatic assembly production line, the tapping test device includes a conveying part, a tapping part and a testing part, and the tapping part and the testing part are arranged in sequence above the conveying part; the tapping part includes a frame, a clamping mechanism, a lifting mechanism and a tapping mechanism, and the tapping mechanism is hoisted on the frame and suspended; the clamping mechanism is arranged below the tapping mechanism, and the lifting mechanism is driven and connected to the clamping mechanism, which can drive the clamping mechanism to perform lifting and lowering movements between the conveying part and the tapping mechanism, and when the clamping mechanism rises to the tapping position, the tapping end of the tapping mechanism faces the edge of the upper end surface of the motor; the testing part includes a torque testing mechanism and a movement testing mechanism.

[0016] Compared with the prior art, the motor automatic assembly production line described in the present invention aligns the front and rear covers and inspects the stator respectively before assembly through a front cover bearing straightening device, a rear cover bearing straightening device and a stator inspection device. After assembly, the motor is re-calibrated and tested through the tapping test device and the comprehensive test device, which includes the calibration, assembly and inspection processes, greatly reduces labor costs, and improves productivity and product yield.

[0017] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the motor automatic assembly production line of the present invention;

[0019] Figure 2 This is a schematic diagram of the assembly part of the motor automatic assembly production line of the present invention;

[0020] Figure 3 It is an assembly diagram of the front cover bearing straightening device of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the front cover bearing straightening device of the present invention;

[0022] Figure 5 A three-dimensional diagram of the front cover fixture of the present invention;

[0023] Figure 6 It is an assembly diagram of the rear cover bearing straightening device of the present invention;

[0024] Figure 7 A three-dimensional diagram of the rear cover bearing straightening device of the present invention;

[0025] Figure 8 It is a cross-sectional view of the rear cover bearing straightening device of the present invention;

[0026] Fig. 9 A three-dimensional diagram of the rear cover fixture of the present invention;

[0027] Fig.10 is a three-dimensional diagram of the stator detection device of the present invention;

[0028] Fig.11 It is a side view of the stator detection device of the present invention;

[0029] Fig.12 A top view of the stator detection device of the present invention;

[0030] Fig.13 A side view of the knock test device of the present invention;

[0031] Fig.14 It is a structural schematic diagram of the striking part of the present invention;

[0032] Fig.15 A bottom view of the striking portion of the present invention;

[0033] Fig.16 It is a side sectional view of the striking part of the present invention;

[0034] Fig.17 It is a structural schematic diagram of the striking assembly of the present invention;

[0035] Fig.18 A top perspective view of the striking portion of the present invention;

[0036] Fig.19 It is a structural schematic diagram of the torque testing mechanism of the present invention;

[0037] Fig. 20 It is a structural schematic diagram of the sway test mechanism of the present invention. DETAILED DESCRIPTION

[0038] The present invention will now be more fully described with reference to the accompanying drawings in the text which follow, in which embodiments of the present invention are shown. However, the present invention may be embodied in a variety of different forms and should not be construed as being limited to the specific embodiments set forth herein. Rather, these embodiments are intended to convey the scope of the present invention to those skilled in the art.

[0039] like Figure 1 to Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of the motor automatic assembly production line of the present invention; Figure 2 The present invention is a schematic diagram of the assembly part of the motor automatic assembly production line. An automatic motor assembly production line includes a front cover bearing straightening device 1, a rear cover bearing straightening device 2, a rotor feeding line 3, a stator detection device 4, a motor assembly device 5, an automatic screw locking device 7 and a knocking test device 8 for correcting the position of the rotor and the bearing; the front cover bearing straightening device, the rear cover bearing straightening device, the rotor feeding line and the stator detection device are arranged around the motor assembly device, the automatic screw locking device is located at the next process position of the motor assembly device, and the knocking test device is located at the next process position of the automatic screw locking device.

[0040] Among them, the front cover bearing straightening device 1 is used to align the coaxiality of the front cover bearing and the front cover before assembling the motor, the rear cover bearing straightening device 2 is used to align the coaxiality of the rear cover bearing and the rear cover, the rotor loading line 3 is used to convey the rotor, the stator detection device 4 is used to convey and detect whether the stator is qualified, and the tapping test device 8 is used to correct the position of the rotor and the bearing and test the torque and movement of the motor.

[0041] Preferably, a rotor outer diameter detection mechanism 31 is further provided between the rotor feeding line 3 and the motor assembly device 5 , and the rotor outer diameter detection mechanism 31 is used to detect whether the rotor outer diameter is qualified.

[0042] Preferably, a transfer mechanism 6 for temporarily storing the motor is further provided between the motor assembly device 5 and the automatic screw locking device 7 .

[0043] Preferably, the present invention further comprises a comprehensive testing device 9, which is located at the next process position of the knocking testing device 8, and the comprehensive testing rotor 9 is used for performing motor performance testing and noise testing.

[0044] In this embodiment, a manipulator 10 is provided between the front cover bearing straightening device 1, the rear cover bearing straightening device 2, the rotor loading line 3, the stator detection device 4, and the transfer mechanism 6 and the motor assembly mechanism 5, between the transfer mechanism 6 and the automatic screw locking device 7, and between the tapping test device 8 and the comprehensive test device 9. The manipulator 10 is used to assemble and transfer the motor accessories between the various processes.

[0045] In summary, the front cover bearing straightening device 1, the rear cover bearing straightening device 2, the rotor loading line 3, the stator detection device 4, the motor assembly device 5, the transfer mechanism 6 and the automatic screw locking device 7 form the assembly part of the motor, and the knocking test device 8 and the comprehensive test device 9 form the test part of the motor.

[0046] Specifically, Figure 3 As shown, Figure 3 The assembly diagram of the front cover bearing straightening device of the present invention. The front cover bearing straightening device 1 comprises at least one front cover fixture 11, a straightening fixture 12, a front cover fixture conveying mechanism 13 and a front cover straightening lifting mechanism 14; the front cover fixture 11 is fixed on the fixture conveying mechanism 13, and the upper end surface of the front cover fixture 11 is the first clamping surface; the straightening fixture 12 is arranged above the front cover fixture conveying mechanism 13, and the lower end surface of the straightening fixture 12 is the second clamping surface, and the front cover straightening lifting mechanism 14 drives the straightening fixture 12 to press down or rise, and the first clamping surface and the second clamping surface clamp the front cover through the pressing action, so that the front cover bearing is straightened to the specified position.

[0047] like Figure 4 and Figure 5 As shown, Figure 4 It is a structural schematic diagram of the front cover bearing straightening device of the present invention; Figure 5 The figure is a three-dimensional diagram of the front cover fixture of the present invention. The front cover fixture 11 comprises a base 111, a fixing fixture 112 and a fixing shaft 113. The fixing fixture 112 is arranged on the base 111. The upper end surface of the fixing fixture 112 is the first clamping surface. The fixing shaft 113 stands vertically upward in the middle of the fixing fixture 112. In this embodiment, the lower end of the fixing shaft 113 passes through the fixing fixture 112 and is inserted into the base 111 for fixing. When the front cover is installed, the fixing shaft 113 passes through the front cover to fix the center position of the front cover.

[0048] The second clamping surface of the straightening fixture 12 is provided with a clearance recess 121 that matches the contour of the fixed shaft and the front cover bearing. When the first clamping surface and the second clamping surface are clamped together, the upper end of the fixed shaft 113 is inserted into the clearance recess 121. At the same time, the front cover bearing is straightened to the specified position under the action of the clamping force.

[0049] In addition, the front cover fixture 11 further includes a plurality of pressing blocks 114 , and the plurality of pressing blocks 114 press the fixing fixture 112 onto the base 111 .

[0050] The front cover fixture 11 also includes at least two guide blocks 115, which are symmetrically arranged on the outside of the fixing fixture 112. The guide blocks 115 protrude from the upper end surface of the fixing fixture 112 and are used to prevent the front cover from being misplaced when the front cover is removed, thereby playing a guiding role.

[0051] Preferably, the fixing fixture 112 is also provided with a fixing hole that cooperates with the front cover. The position of the fixing hole is set according to the shape of the front cover and cooperates with the boss or other protruding parts on the front cover to limit the rotation of the front cover.

[0052] The front cover fixture conveying mechanism 13 is a turntable mechanism, and the plurality of front cover fixtures 11 are fixedly mounted on the upper surface of the turntable.

[0053] Specifically, Figure 6 and Figure 7 As shown, Figure 6 It is an assembly diagram of the rear cover bearing straightening device of the present invention; Figure 7 The figure is a three-dimensional diagram of the rear cover bearing straightening device of the present invention. The rear cover bearing straightening device comprises at least one rear cover fixture 21, a pressing fixture 22, a bearing straightening fixture 23, a pressing guide assembly 24, a straightening shaft guide assembly 25 and a rear cover fixture conveying mechanism 26; the rear cover fixture 21 is arranged on the rear cover fixture conveying mechanism 26, the pressing fixture 22 and the bearing straightening fixture 23 are both arranged above the rear cover fixture conveying mechanism 26, the pressing guide assembly 24 drives the rear cover pressing fixture 22 to press down or rise, and the straightening shaft guide assembly 25 drives the bearing straightening fixture 23 to press down or rise.

[0054] like Fig. 9 As shown, Fig. 9 2 is a three-dimensional diagram of the back cover fixture of the present invention. A groove 211 is provided in the middle of the back cover fixture 21 to match the back cover, and a plurality of positioning pins 212 are provided around the groove 211. The shape and size of the groove 211 are determined according to the shape of the back cover, and the back cover is positioned by the groove 211. The number and position of the positioning pins 211 are also determined according to the opening position of the back cover, and are used to limit the rotation of the back cover.

[0055] like Figure 8 As shown, Figure 8 The cross-sectional view of the rear cover bearing straightening device of the present invention is as follows: A longitudinal through hole is opened in the middle of the pressing fixture 22 , and the diameter of the through hole is larger than the outer diameter of the bearing straightening fixture 23 .

[0056] The downward pressing guide assembly 24 includes a downward pressing cylinder 241, a downward pressing guide shaft 242, a cylinder fixing plate 243 and a downward pressing plate 244; the downward pressing cylinder 241 is fixed on the cylinder fixing plate 243, and the piston rod of the downward pressing cylinder 241 is fixedly connected to the downward pressing plate 244; the downward pressing guide shaft 242 passes through the cylinder fixing plate 243, and its lower end is fixedly connected to the downward pressing plate 244, and the downward pressing clamp 22 is fixedly connected to the bottom of the downward pressing plate 244.

[0057] The straightening shaft guide assembly 25 includes a servo motor drive module 251, a straightening shaft fixing plate 252 and a straightening guide shaft 253; the straightening guide shaft 253 passes through the cylinder fixing plate 243, and its lower end is fixedly connected to the straightening shaft fixing plate 252; the straightening shaft fixing plate 252 is drivingly connected to the servo motor drive module 251; the upper end of the bearing straightening fixture 23 is fixedly connected to the straightening shaft fixing plate 252 and is located above the pressing fixture 22. The servo motor can accurately control the descending distance of the straightening shaft 253 so as to accurately straighten the rear cover bearing. When in use, the descending distance of the straightening shaft 253 is preset.

[0058] The rear cover bearing straightening device 2 described in the present invention further includes a support seat 27 , which is disposed on one side of the rear cover fixture conveying mechanism 26 , and the pressing guide assembly 24 and the straightening guide assembly 25 are both mounted on the support seat 27 .

[0059] In this embodiment, the rear cover fixture conveying mechanism 26 is a turntable mechanism, and the fixture 21 is arranged on the turntable.

[0060] Preferably, an alarm device is also included, which is electrically connected to the servo motor drive module 251. When the straightening shaft 253 cannot be blocked and cannot drop to a preset value, it means that the rear cover is a defective product, and the alarm device will sound an alarm.

[0061] Specifically, the rotor outer diameter detection mechanism 31 is arranged at the discharge end of the rotor feeding line 3. The manipulator 10 grabs the rotor from the discharge end of the rotor feeding line 3 and places it on the rotor outer diameter detection mechanism 31 for detection. Qualified products are grabbed to the motor assembly device 5 for assembly, and unqualified products are placed in the unqualified product area. Therefore, a unqualified product placement tray can also be set on one side of the rotor outer diameter detection mechanism 31.

[0062] Specifically, Figures 10 to 12 As shown, Fig.10 is a three-dimensional diagram of the stator detection device of the present invention; Fig.11 It is a side view of the stator detection device of the present invention; Fig.12The top view of the stator detection device of the present invention. The stator detection mechanism 4 includes a stator conveying mechanism 41, a photographing mechanism and an image processor; the stator conveying mechanism 41 includes at least one stator accommodating portion, the accommodating portion is provided with a longitudinal through hole, the diameter of which is larger than the outer diameter of the stator coil winding; the photographing mechanism includes a top surface photographing component 43a and a bottom surface photographing component 43b, the top surface photographing component 43a and the bottom surface photographing component 43b each include a camera, which are respectively arranged above and below the accommodating portion; the two cameras are respectively electrically connected to the input end of the image processor. The stator is placed in the accommodating portion of the stator conveying mechanism. When the accommodating portion reaches the photographing station of the photographing mechanism, the photographing mechanism takes a photo, obtains the image of the top and bottom surfaces of the stator to be measured and inputs it into the image processor, and the image processor converts it into a digital signal according to the pixel distribution, brightness, color and other information, and performs various operations on these signals to extract the characteristics of the target, and then obtains the result of whether the stator to be measured is qualified.

[0063] The stator conveying mechanism 41 includes a stator conveyor belt 411 and a driving mechanism 412. The stator conveyor belt 411 is provided with at least one stator accommodating portion. The stator conveyor belt 411 is drivingly connected to the driving mechanism 412. In an embodiment, the driving mechanism 412 is a servo motor, which is drivingly connected to the stator conveyor belt to drive the stator conveyor belt 411 to rotate in a loop.

[0064] The stator conveying mechanism 41 also includes a photoelectric detection head, which is arranged at the photographing station of each camera. The photoelectric detection head detects whether there is a stator at the photographing station. If there is a stator, the stator conveyor belt 411 stops rotating and the photographing mechanism starts working. If there is no stator, the stator conveyor belt 411 continues to rotate.

[0065] The top camera assembly 43a includes a camera 431a, an annular light source 432a, a backlight source 433a and a bracket 434a, wherein the camera 431a, the annular light source 432a and the backlight source 433a are all mounted on the bracket 434a, and the bracket 434a is mounted on the frame. Similarly, the bottom camera assembly 43b includes a camera 431b, annular light source 432b, a backlight source 433b and a bracket 434b, wherein the camera 431b, the annular light source 432b and the backlight source 433ba are all mounted on the bracket 434b, and the bracket 434b is mounted on the frame. The annular light source is a red light source, which is arranged between the stator receiving portion and the cameras, and the backlight source is arranged on the opposite side of the annular light source relative to the receiving portion. It should be noted that the top camera assembly 43a and the bottom camera assembly 43b are staggered and installed in opposite directions.

[0066] This embodiment also includes a shading component 44, and the shading component cover is arranged outside the photographing mechanism. In this embodiment, the shading component is a cabinet, including a frame 441 and a shading plate 442. The shading plate 442 can be a brown glass plate. Preferably, a movable door 443 is also provided to operate the overall components of the shading component.

[0067] In addition, a display 45 is also included, which is electrically connected to the output end of the image processor and installed on the frame 441, so that the operator can control the entire detection device. This embodiment also includes an alarm light, which is electrically connected to the output end of the image processor. When the image processor obtains an unqualified signal, it outputs an instruction to turn on the alarm light to notify the operator to remove the unqualified stator.

[0068] Specifically, the motor assembly device 5 includes a motor assembly turntable mechanism 51 and a motor clamping mechanism 52. The motor clamping mechanism 52 is arranged above the assembly turntable of the motor assembly turntable mechanism. The turntable on the motor assembly turntable mechanism 51 is provided with multiple motor installation positions. Each of the manipulators 10 moves the stator, rotor and front and rear covers to the motor installation positions in turn to complete the assembly of the motor, and then applies pressure to the motor through the motor clamping mechanism 52 to make the various components fit together.

[0069] Specifically, in this embodiment, the transfer mechanism 6 is also a turntable mechanism, including a transfer turntable. After the motor is assembled and pressed, it is transported to one end of the transfer turntable by the manipulator 10, and the motor is transported to the other end of the turntable under the rotation of the transfer turntable. The motor is then grabbed by the manipulator 10 and placed on the automatic screw locking device 7, leaving buffer time for the subsequent process of screwing the motor.

[0070] The automatic screw-locking device 7 includes an automatic screw-blowing mechanism 71, an automatic locking mechanism 72 and an automatic nut-loading mechanism 73, which are arranged in sequence. The automatic screw-blowing mechanism 71 provides screws, and the automatic locking mechanism 72 and the automatic nut-loading mechanism 73 are used to screw the motor. In addition, the motor is grabbed onto the knocking test device 8 by the manipulator 10.

[0071] Specifically, Fig.13 As shown, Fig.13 The tapping test device 8 of the present invention comprises a tapping part 81, a testing part and a conveying part 84, wherein the tapping part 81 and the testing part are sequentially arranged above the conveying part 84, and the conveying part 84 is used to convey the assembled motor into the workstations of the tapping part 81 and the testing part in sequence.

[0072] like Fig.14and Fig.16 As shown, Fig.14 It is a structural schematic diagram of the striking part of the present invention; Fig.16 The figure is a side cross-sectional view of the striking part of the present invention. The striking part comprises a striking frame 811, a clamping mechanism 812, a striking lifting mechanism 813 and a striking mechanism 814. The striking mechanism 814 is suspended on the striking frame 811 and arranged in mid-air. The clamping mechanism 812 is arranged below the striking mechanism 814. The striking lifting mechanism 813 is drivingly connected to the clamping mechanism 812 and can drive the clamping mechanism 812 to perform lifting and lowering motion between the conveying part and the striking mechanism 814. When the clamping mechanism 812 rises to the striking position, the striking end of the striking mechanism 813 faces the upper end surface edge of the motor.

[0073] like Fig.17 As shown, Fig.17 The structure diagram of the knocking assembly of the present invention. The knocking mechanism 814 includes at least one group of knocking assemblies, which include a mounting plate 8141, a fixed plate 8142, a knocking member 8143, a knocking spring 8144, a reset cylinder 8145 and a limit cylinder 8146; the mounting plate 8141 is tilted, and its upper end surface is fixedly connected to the knocking frame 811, and the fixed plate 8142, the knocking member 8143, the knocking spring 8144, the reset cylinder 8145 and the limit cylinder 8146 are all installed on the mounting plate 8141; the fixed plate 8142 is erected on the The lower end of the mounting plate 8141 is provided with a through hole; the striking member 8143 is slidably mounted on the mounting plate 8141, and comprises a striking end and a driving end, the striking end is inclined downward and can pass through the through hole, and a limiting hole is provided on one side of the driving end; one end of the striking tension spring 8144 is fixedly connected to the fixing plate 8142, and the other end is fixedly connected to the driving end of the striking member 8143; the reset cylinder 8145 is drivingly connected to the driving end of the striking member 8143; the limiting cylinder 8146 is arranged on the outside of the limiting hole.

[0074] The working process of the knocking assembly is as follows: the reset cylinder 8145 drives the knocking piece 8143 to move in the opposite direction of the knocking direction, so that the knocking tension spring 8144 is in a stretched state, and then the limit cylinder 8146 is started, and its protruding end is inserted into the limit hole to limit the fixing piece 8143. After limiting, the reset cylinder resets and leaves the knocking piece; when there is a knocking signal, the limit cylinder 8146 resets and releases the knocking piece 8143. The knocking piece 8143 moves rapidly in the knocking direction under the action of gravity and the elastic force of the knocking tension spring 8144, and performs a knocking action. After the knocking is completed, the knocking lifting mechanism 813 descends to the conveying part, and the clamping mechanism 812 releases the motor, and the motor will continue to convey forward to the testing part.

[0075] In this embodiment, the striking end of the striking member 8143 is a cylindrical striking head, and the driving end is a slider, which is slidably installed on the mounting plate 8141 through a slide rail. The striking head and the slider can be designed as an integral unit, or can be detachably fixedly connected.

[0076] like Fig.18 As shown, Fig.18 The top perspective view of the striking part of the present invention. In this embodiment, the striking mechanism 814 includes four groups of striking components, which are arranged around a circle to form a striking space, and strike four points on the upper end surface edge of the motor in different directions. Moreover, the four groups of striking components strike one by one in sequence, so that the motor is vibrated in different directions, so that the rotor and the upper and lower oil-containing bearings of the front and rear are corrected in the same axial direction.

[0077] like Fig.15 As shown, Fig.15 It is a bottom view of the knocking part of the present invention. The clamping mechanism 812 includes two clamping cylinders 8121 arranged opposite to each other and two motor clamping blocks 8122 respectively fixed to the clamping ends of the two clamping cylinders; the knocking lifting mechanism 813 includes two lifting cylinders arranged in parallel, the two lifting cylinders are installed on the knocking frame 811, and their piston rods are respectively fixedly connected to the two clamping cylinders 8121. In this embodiment, it also includes two clamping cylinder fixing plates 815 that move up and down with the lifting mechanism, the clamping cylinder fixing plates 815 are slidably installed on the knocking frame 811 along the lifting direction, the lower ends of the two clamping cylinder fixing plates 815 are respectively fixed to one of the clamping cylinders 8121, and the upper ends of the clamping cylinder fixing plates 815 are respectively fixedly connected to the piston rod end of one of the lifting cylinders. The lifting cylinder drives the clamping cylinder fixing plate 815 to slide up and down, thereby driving the clamping mechanism 812 to move up and down. The method of first lifting the motor into the air and then striking it can not only avoid damage to the components of the conveying part, but also make the motor vibrate evenly after being struck, thereby obtaining a better correction effect.

[0078] Preferably, fixing holes are provided on both outer sides of the motor clamp 8122, and the knocking part further comprises two groups of fixed cylinders 816, which are symmetrically arranged below the knocking mechanism 814, and whose height is the same as the height of the two clamping cylinders 8121 after they rise to the knocking position, and whose piston rod protruding ends face and can be inserted into the fixing holes. In this embodiment, the fixing holes are provided in the horizontal direction, and the fixed cylinders 816 are also arranged in the horizontal direction. When the clamping mechanism 812 rises to the knocking position, the piston rod end of the fixed cylinder 816 extends into the fixing hole, assisting the clamping cylinder 8121 in fixing the motor, further improving the stability of the motor during knocking, and also sharing the pressure of the clamping cylinder 8121, preventing the clamp from deforming during the knocking process.

[0079] Specifically, the testing part includes a torque testing mechanism 82 and a movement testing mechanism 83 .

[0080] like Fig.19 As shown, Fig.19 The structure diagram of the torque test mechanism of the present invention is shown in FIG. The torque test mechanism 82 includes a linear guide fixed plate 821, a linear guide sliding plate 822, a torque test drive cylinder 823, a torque test motor 824, a torque test sensor 825 and a first pneumatic gripper 826. The linear guide fixed plate 821 is vertically fixed above the transmission part. The linear guide sliding plate 822 is slidably mounted on the linear guide fixed plate 821 along the vertical direction. The torque test drive cylinder 823 is fixed on the linear guide fixed plate 821 and is drivingly connected to the linear guide sliding plate 822. The torque test motor 824, the torque test sensor 825 and the first pneumatic gripper 826 are sequentially connected and mounted on the linear guide sliding plate 822 in a driving manner from top to bottom. When the motor is transported to the torque test station, the torque test drive cylinder 823 drives the linear guide sliding plate 822 to drive the torque test motor 824, the torque test sensor 825 and the first pneumatic gripper 826 to descend together. The first pneumatic gripper 826 clamps the motor shaft after it falls into place, and then the torque test motor 824 drives the first pneumatic gripper 826 to rotate to twist the motor shaft. During this process, the torque test sensor 825 obtains the tightness of the motor and inputs it into the control system, and then makes a judgment and obtains the result of the motor torque performance. After the torque test is completed, the first pneumatic gripper 826 loosens the motor shaft and resets, and the motor continues to be transported forward to the sway test station.

[0081] like Fig. 20 As shown, Fig. 20The schematic diagram of the structure of the sway test mechanism of the present invention is shown in FIG. The sway test mechanism 83 includes a sway mechanism fixing plate 831, a sway test motor 832, a sliding assembly 833, a sway test sensor and a second pneumatic claw 835. The sway mechanism fixing plate 831 is vertically fixed above the conveying part, the sliding assembly 833 is vertically mounted on the sway mechanism fixing plate 831, the sway test motor 832 is drivingly connected to the sliding end of the sliding assembly 833, and the second pneumatic claw 835 is fixed to the sliding end of the sliding assembly 833. The movement test sensor is arranged on one side of the motor movement test station. When the motor is transported to the movement test station, the movement test motor 832 drives the sliding assembly 833 and the second pneumatic claw 835 to move downward. After falling into place, the second pneumatic claw 835 grasps the motor shaft, and then the movement test motor 832 is started to apply an axial upward pulling force to the motor shaft. At this time, the movement test sensor obtains the size of the axial movement of the motor shaft, and inputs it into the control system to obtain the movement test result. If the movement size is within the preset range, the motor under test is qualified. If the movement size exceeds the preset range, the motor under test is unqualified. After completing the movement test, the second pneumatic claw 35 releases the motor shaft and resets it. The tested motor continues to be transported forward and subsequent processing is performed according to the test results.

[0082] Preferably, the first pneumatic claw 826 and the second pneumatic claw 835 each include a pneumatic claw cylinder and a group of pneumatic claw clamping blocks, the pneumatic claw cylinder is drivingly connected to the pneumatic claw clamping blocks, and a motor shaft clamping position is formed between each group of pneumatic claw clamping blocks. In this embodiment, each group of pneumatic claw clamping blocks includes three pneumatic claw clamping blocks, and the motor shaft is clamped by the motor shaft clamping position formed after the three pneumatic claw clamping blocks are clamped.

[0083] The conveying part 84 includes a conveyor line frame, a conveyor belt and a conveyor motor, wherein the conveyor belt and the conveyor motor are mounted on the conveyor line frame, and the conveyor motor is connected to the conveyor belt in a transmission manner. The assembled motors are arranged in sequence on the conveyor belt, and the conveyor belt is conveyed in a stepwise manner, so that the knocking process, torque test and sway test can be carried out simultaneously, thereby improving production efficiency.

[0084] Specifically, the comprehensive testing device 9 may include devices for performing various tests on motor performance, such as a noise testing device, a dynamometer dynamic controller, a dynamometer controller, and the like.

[0085] Working principle: the front cover bearing straightening device 1, the rear cover bearing straightening device 2, the rotor loading line 3, and the stator detection device 4 automatically perform their own calibration or testing processes after manual loading, and then are grabbed by different manipulators 10 to the motor assembly device 5 for assembly, and then the screws are tightened by the automatic screw locking device 7, and finally the final calibration and test are carried out by the knocking test device 8 and the comprehensive test device 9.

[0086] Compared with the prior art, the motor automatic assembly production line described in the present invention aligns the front and rear covers and inspects the stator respectively before assembly through a front cover bearing straightening device, a rear cover bearing straightening device and a stator inspection device. After assembly, the motor is re-calibrated and tested through the tapping test device and the comprehensive test device, which includes the calibration, assembly and inspection processes, greatly reduces labor costs, and improves productivity and product yield.

[0087] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A motor automatic assembly production line, characterized by: It includes a front cover bearing straightening device, a rear cover bearing straightening device, a rotor feeding line, a stator detection device, a motor assembly device, an automatic screw locking device and a knocking test device; the front cover bearing straightening device, the rear cover bearing straightening device, the rotor feeding line and the stator detection device are arranged around the motor assembly device, the automatic screw locking device is located at the next process position of the motor assembly device, and the knocking test device is located at the next process position of the automatic screw locking device; a rotor outer diameter detection mechanism is also arranged between the rotor feeding line and the electronic assembly device; the stator detection device includes a stator transmission mechanism, a camera mechanism and an image processor; the stator transmission mechanism includes at least one stator accommodating portion, the accommodating portion is provided with a longitudinal through hole, and its diameter is greater than the outer diameter of the stator coil winding; the camera mechanism includes a top surface camera component and a bottom surface camera component, and the top surface camera component and the bottom surface camera component each include a camera, which are respectively arranged above and below the accommodating portion; the cameras are respectively electrically connected to the input end of the image processor; The tapping test device includes a conveying part, a tapping part and a testing part, and the tapping part and the testing part are arranged in sequence above the conveying part; the tapping part includes a frame, a clamping mechanism, a lifting mechanism and a tapping mechanism, and the tapping mechanism is hoisted on the frame and suspended in the air; the clamping mechanism is arranged below the tapping mechanism, and the lifting mechanism is drivingly connected to the clamping mechanism, and can drive the clamping mechanism to perform lifting and lowering movements between the conveying part and the tapping mechanism. When the clamping mechanism rises to the tapping position, the tapping end of the tapping mechanism faces the edge of the upper end surface of the motor; the testing part includes a torque testing mechanism and a movement testing mechanism.

2. The motor automatic assembly production line according to claim 1, characterized in that: A transfer mechanism for temporarily storing the motor is also provided between the motor assembly device and the automatic screw locking device.

3. The motor automatic assembly production line according to claim 1 is characterized in that: It also includes a comprehensive testing device, which is located at the next process position of the knocking testing device.

4. The motor automatic assembly production line according to claim 1, characterized in that: Robots are provided between the front cover bearing straightening device, the rear cover bearing straightening device, the rotor loading line, the stator detection device, and the transfer mechanism and the motor assembly device, between the transfer mechanism and the automatic screw locking device, and between the knocking test device and the comprehensive test device.

5. The motor automatic assembly production line according to claim 1 is characterized in that: The front cover bearing straightening device includes at least one front cover fixture, a straightening fixture, a fixture conveying mechanism and a lifting mechanism; the front cover fixture is fixed on the fixture conveying mechanism, and the upper end surface of the front cover fixture is the first clamping surface; the straightening fixture is arranged above the fixture conveying mechanism, and the lower end surface of the straightening fixture is the second clamping surface, and the lifting mechanism drives the straightening fixture to be pressed down or raised.

6. The motor automatic assembly production line according to claim 1, characterized in that: The rear cover bearing straightening device includes at least one rear cover fixture, a pressing fixture, a bearing straightening fixture, a pressing guide assembly, a straightening shaft guide assembly and a fixture conveying mechanism; the rear cover fixture is arranged on the fixture conveying mechanism, the pressing fixture and the bearing straightening fixture are both arranged above the fixture conveying mechanism, the pressing guide assembly drives the pressing fixture to press down or rise, and the straightening shaft guide assembly drives the bearing straightening fixture to press down or rise.

7. The motor automatic assembly production line according to claim 1, characterized in that: The automatic screw-locking device comprises an automatic screw-blowing mechanism, an automatic screw-locking mechanism and an automatic nut-loading mechanism, and the automatic screw-blowing mechanism, the automatic screw-locking mechanism and the automatic nut-loading mechanism are arranged in sequence.

Images