Motor rotor dynamic balance automatic testing device

Abstract

The invention relates to the technical field of motor rotor detection, in particular to a motor rotor dynamic balance automatic testing device which comprises a rack, the rack is provided with a conveying belt, the conveying belt is provided with a supporting seat used for supporting a motor rotor, and the supporting seat is provided with an inserting block used for limiting the motor rotor; a guide plate for guiding the slope of the motor rotor; and the movable disc is rotationally mounted on the rack, and a plurality of clamping blocks used for fixing the end part of the motor rotor are movably arranged on the movable disc. According to the automatic testing device for the dynamic balance of the motor rotor, when coarse screening work is carried out, the conveying belt moves to transfer the motor rotor to the movable disc from the supporting base, the movable disc drives the motor rotor to rotate through the clamping blocks, and the camera shooting equipment shoots the rotating posture of the motor rotor; dynamic balance coarse screening is carried out on the motor rotor according to the shot video, dynamic balance coarse screening can be automatically carried out on the motor rotor, and therefore the workload of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of motor rotor detection, and in particular to an automatic testing device for dynamic balance of a motor rotor. Background Art

[0002] The motor rotor refers to the part that rotates in the rotor system, usually forming a magnetic field with the stator and interacting with it. It is an important component of motors, generators and other rotating machinery. The rotor can be divided into two types according to the design: cage type and winding type.

[0003] According to the publication (announcement) number CN112803688B, the publication (announcement) date is 2022-06-14, and a micromotor rotor dynamic balancing machine is disclosed, including a frame, a detection mechanism, a correction mechanism, a material rack and a transfer mechanism; the detection mechanism is connected to the frame to drive the rotor to rotate and detect the dynamic balance of the rotor and the blades, and the rotation axis of the rotor is horizontal; the correction mechanism is connected to the frame for milling the outer periphery of the iron core in the rotor. By adopting the above technical solution, the blades are assembled to the rotor, and the rotor is placed on the material rack together with the blades. The transfer mechanism clamps the rotor and places the rotor on the detection mechanism to perform a dynamic balance test on the rotor; then, the transfer mechanism clamps the detected rotor again, and translates the rotor to the correction mechanism, and processes a milling groove on the outer periphery of the iron core, so that the center of mass of the rotor and the blades moves down as close to the rotation axis of the rotor as possible, or even overlaps; finally, the transfer mechanism clamps the milled rotor again and takes it out of the correction mechanism to complete the dynamic balance correction of the rotor.

[0004] In the prior art including the above-mentioned patent, when performing dynamic balancing tests on motor rotors, workers generally fix a batch of motor rotors on dynamic balancing testing equipment in sequence and use the dynamic balancing testing equipment to perform dynamic balancing tests. Although this method can obtain accurate dynamic balancing results, due to the lack of effective coarse screening, all motor rotors need to be tested one by one by the workers, resulting in a heavy workload for the workers and low efficiency of manual replacement one by one. Summary of the invention

[0005] The purpose of the present invention is to provide a motor rotor dynamic balance automatic testing device to solve the above problems.

[0006] In order to achieve the above object, the present invention provides a motor rotor dynamic balance automatic test device, comprising a frame, on which are provided:

[0007] A conveyor belt, on which a support seat for supporting a motor rotor is arranged, and an insert block for limiting the motor rotor is arranged on the support seat;

[0008] A guide plate, which is used to guide the ramp of the motor rotor;

[0009] A movable plate is rotatably mounted on the frame, and a plurality of clamping blocks for fixing the ends of the motor rotor are movably arranged on the movable plate, wherein:

[0010] The conveyor belt moves to make the end of the motor rotor move along the slope of the guide plate and gradually face one of the clamping blocks, and the clamping block moves to make the motor rotor continue to move along the guide plate and separate from the insert block, and the clamping block fixes the motor rotor on the movable disk.

[0011] Preferably, the clamping block is provided with a groove adapted to the gear teeth of the motor rotor, and the inserting block is symmetrically and movably provided with a limit plate for limiting the angle of the motor rotor.

[0012] Preferably, a push block for pushing the limit plate is slidably provided on the insert block, and a trigger block for driving the push block to move is provided on the support seat.

[0013] Preferably, a slider is movably provided on the guide plate, and the slider is engaged with a gear at the end of the motor rotor to enable the motor rotor to slide along the guide plate.

[0014] Preferably, a driving disk for driving the plurality of clamping blocks to move together is rotatably provided on the movable disk, and a locking rod for fixing the movable disk to the frame is provided on the movable disk, and the clamping blocks move together to separate the locking rod from the frame.

[0015] Preferably, a driving gear is movably arranged in the frame, and the driving gear includes the following three stations:

[0016] In the first station, the driving gear drives the conveyor belt to move;

[0017] In the second station, the driving gear drives the movable belt to move and the driving disk to rotate;

[0018] In the third working station, the driving gear drives the driving disc to rotate.

[0019] Preferably, a first gear for driving the conveyor belt to move and meshing with the driving gear is rotatably provided on the frame, and a second gear meshing with the driving gear is provided on the driving disc.

[0020] Preferably, a screw rod is provided on the driving gear, a traction rope is provided between the slider and the driving gear, and the slider moves to extend the screw rod into the frame.

[0021] Preferably, a plurality of movable blocks are movably provided on the frame, and the plurality of movable blocks are combined to form a screw hole adapted to the screw rod.

[0022] Preferably, a movable ring is rotatably provided on the frame, a torsion spring is provided between the movable ring and the driving disk, and a spring sheet extending to the frame is provided on the movable ring.

[0023] In the above technical scheme, an automatic testing device for dynamic balancing of a motor rotor provided by the present invention has the following beneficial effects: when performing rough screening, the motor rotor is placed in a support seat on the conveyor belt, and the insert block on the support seat is inserted into a groove on the motor rotor to prevent the motor rotor from rolling on the support seat, the conveyor belt moves with the support seat and the motor rotor, the end of the motor rotor gradually approaches the guide plate and moves along the slope on the guide plate, the motor rotor moves upward relative to the support seat until it faces a clamping block, at which time the clamping block approaches the center of the movable disk, the clamping block pushes the motor rotor to continue to move along the guide plate, the insert block on the support seat gradually separates from the motor rotor, the clamping block continues to move, pushes the motor rotor to move toward the axis of the rotating disk, and fixes the motor rotor, the rotating disk drives the motor rotor to rotate, and the rotation posture of the motor rotor is photographed by a camera device, and the motor rotor is subjected to dynamic balancing rough screening based on the video obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the internal structure provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of a support base provided by an embodiment of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 A schematic diagram of the internal structure of an insert block provided in an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the structure of a driving gear provided by an embodiment of the present invention;

[0031] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0032] Figure 8A schematic diagram of the structure of a drive disk provided in an embodiment of the present invention;

[0033] Fig. 9 for Figure 8 Enlarged view of point C in the middle;

[0034] Fig.10 for Figure 8 Enlarged view of point D in the middle;

[0035] Fig.11 A schematic diagram of the structure of a guide plate provided in an embodiment of the present invention;

[0036] Fig.12 A schematic structural diagram of a slider provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Frame; 11. Conveyor belt; 111. Driving roller; 112. Support seat; 113. Insert block; 114. Limit plate; 115. Push block; 116. Trigger block; 117. Cable; 118. First gear; 12. Movable disk; 121. Clamp block; 122. Tenon block; 123. Lock rod; 124. Cable; 125. Driving disk; 126. Movable ring; 127. Spring leaf; 128. Second gear; 129. Connecting shaft; 13. Driving gear; 131. Synchronous rod; 132. Screw rod; 133. Pushing disk; 134. Movable block; 135. Guide plate; 136. Sliding block; 137. Traction rope; 138. Guide block; 139. Guide groove. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1-12 As shown, a motor rotor dynamic balance automatic test device includes a frame 1, and the frame 1 is provided with:

[0041] The conveyor belt 11 is provided with a support seat 112 for supporting the motor rotor, and the support seat 112 is provided with an insert block 113 for limiting the motor rotor;

[0042] A guide plate 135, which is used to guide the slope of the motor rotor;

[0043] The movable plate 12 is rotatably mounted on the frame 1, and a plurality of clamping blocks 121 for fixing the ends of the motor rotor are movably arranged on the movable plate 12, wherein:

[0044] The conveyor belt 11 moves so that the end of the motor rotor moves along the slope of the guide plate 135 and gradually faces one of the clamping blocks 121 . The clamping block 121 moves so that the motor rotor continues to move along the guide plate 135 and separates from the insert block 113 , and the clamping block 121 fixes the motor rotor on the movable disk 12 .

[0045] Specifically, a camera for photographing the rotation posture of the motor rotor is arranged on the frame 1 .

[0046] Furthermore, when performing rough screening, the motor rotor is placed in the support seat 112 on the conveyor belt 11, and the plug block 113 on the support seat 112 is inserted into the groove on the motor rotor to prevent the motor rotor from rolling on the support seat 112. The conveyor belt 11 moves with the support seat 112 and the motor rotor, and the end of the motor rotor gradually approaches the guide plate 135 and moves along the slope on the guide plate 135. The motor rotor moves upward relative to the support seat 112 until it faces a clamping block 121. At this time, the clamping block 121 approaches the center of the movable disk 12, and the clamping block 121 pushes the motor rotor to continue to move along the guide plate 135. The plug block 113 on the support seat 112 gradually separates from the motor rotor, and the clamping block 121 continues to move, pushing the motor rotor to move toward the axis of the rotating disk and fixing the motor rotor. The rotating disk drives the motor rotor to rotate, and the camera equipment shoots the rotation posture of the motor rotor, and the motor rotor is dynamically balanced and roughly screened according to the video obtained.

[0047] In the above technical scheme, when performing rough screening, the motor rotor is placed in the support seat 112 on the conveyor belt 11, and the plug block 113 on the support seat 112 is inserted into the groove on the motor rotor to prevent the motor rotor from rolling on the support seat 112. The conveyor belt 11 moves with the support seat 112 and the motor rotor, and the end of the motor rotor gradually approaches the guide plate 135 and moves along the slope on the guide plate 135. The motor rotor moves upward relative to the support seat 112 until it faces a clamping block 121. At this time, the clamping block 121 approaches the center of the movable disk 12, and the clamping block 121 pushes the motor rotor to continue to move along the guide plate 135. The plug block 113 on the support seat 112 gradually separates from the motor rotor, and the clamping block 121 continues to move, pushing the motor rotor to move toward the axis of the rotating disk and fixing the motor rotor. The rotating disk drives the motor rotor to rotate, and the rotation posture of the motor rotor is photographed by a camera device, and the motor rotor is subjected to dynamic balancing rough screening based on the video obtained.

[0048] As an embodiment further provided by the present invention, a groove adapted to the gear teeth of the motor rotor is provided on the clamping block 121 , and a limit plate 114 for limiting the angle of the motor rotor is symmetrically and movably provided on the inserting block 113 .

[0049] Specifically, the number of teeth on the motor rotor is an even multiple of the winding grooves thereon, so that it can adapt to the grooves on the clamping block 121 when any groove is facing downward.

[0050] Furthermore, the two limit plates 114 on the plug block 113 are extended to both sides of the plug block 113 and abut against the side walls of the winding groove of the motor rotor, so that the gear teeth on the motor rotor can face the groove on the clamp block 121. In the process of the clamp block 121 pushing the motor rotor to move, the groove on the clamp block 121 gradually faces the gear teeth on the motor rotor. When the motor rotor moves to a position coaxial with the movable disk 12, multiple clamp blocks 121 cooperate to form a ring for fixing the motor rotor, and the grooves on the inner side of the ring are engaged with the gear teeth on the motor rotor.

[0051] As another embodiment further provided by the present invention, a push block 115 for pushing the limit plate 114 is slidably provided on the insert block 113 , and a trigger block 116 for driving the push block 115 to move is provided on the support seat 112 .

[0052] Specifically, the cross section of the push block 115 is an isosceles triangle, a spring is provided between the push block 115 and the support seat 112 , a spring is provided between the trigger block 116 and the support seat 112 , and a pull cable 117 is provided between the trigger block 116 and the push block 115 .

[0053] Furthermore, when the motor rotor is placed on the support seat 112, the plug block 113 on the support seat 112 is inserted into the groove on the motor rotor, and the motor rotor presses the trigger block 116, causing the trigger block 116 to retract into the support seat 112, and the cable 117 between the trigger block 116 and the push block 115 is relaxed. The push block 115 moves upward under the push of the spring and pushes the limit plate 114 to rotate in the direction away from the plug block 113 until the limit plate 114 abuts against the side wall of the groove on the motor rotor to fix the motor rotor on the support seat 112.

[0054] As another embodiment further provided by the present invention, a slider 136 is movably provided on the guide plate 135 , and the slider 136 is engaged with a gear at the end of the motor rotor so that the motor rotor slides along the guide plate 135 .

[0055] Specifically, a guide groove 139 for guiding the movement of the slider 136 is provided on the guide plate 135 . The guide groove 139 includes a horizontal portion and an inclined portion parallel to the inclined surface of the guide plate 135 . A guide block 138 adapted to the guide groove 139 is provided on the slider 136 .

[0056] Furthermore, when the motor rotor contacts the slope of the guide plate 135, the slider 136 on the guide plate 135 engages with the gear teeth on the motor rotor, and the motor rotor moves along the slope of the guide plate 135. Since the motor rotor moves upward relative to the plug block 113, the limit plate 114 on the plug block 113 cannot provide sufficient supporting force for the motor rotor. At this time, the slider 136 moves with the motor rotor with the cooperation of the inclined portions of the guide block 138 and the guide groove 139, which can prevent the motor rotor from rotating during the movement along the guide plate 135, so that the gear teeth on the motor rotor are always facing the grooves on the clamping block 121.

[0057] As another embodiment further provided by the present invention, a driving disk 125 for driving a plurality of clamping blocks 121 to move together is rotatably provided on the movable disk 12, and a locking rod 123 for fixing the movable disk 12 to the frame 1 is provided on the movable disk 12, and the clamping blocks 121 move together to separate the locking rod 123 from the frame 1.

[0058] Specifically, there are four clamping blocks, and the locking rods 123 correspond to the clamping blocks 121 one by one.

[0059] Furthermore, the clamping block 121 is provided with a tenon block 122 extending to the interior of the movable disk 12, the movable disk 12 is provided with a tenon groove adapted to the tenon block 122, the frame 1 is provided with a locking groove adapted to the locking rod 123, a spring is provided between the locking rod 123 and the movable disk 12, a pull rope 124 is provided between the locking rod 123 and the tenon block 122, a flat thread is provided on the driving disk 125, and a sliding groove adapted to the flat thread on the driving disk 125 is provided on the tenon block 122.

[0060] Furthermore, in the process of fixing the motor rotor, the driving disk 125 rotates relative to the movable disk 12, and the flat thread on the driving disk 125 moves along the slide groove on the tenon block 122, and pushes the tenon block 122 and the clamp block 121 to move closer to the center of the movable disk 12, and the pull rope 124 between the tenon block 122 and the locking rod 123 is gradually tightened. When the clamp block 121 fixes the motor rotor, the tenon block 122 drives the locking rod 123 to separate from the frame 1 through the pull rope 124, and the movable disk 12 is unlocked. At this time, the movable disk 12 can rotate with the motor rotor.

[0061] As another embodiment further provided by the present invention, a driving gear 13 is movably provided in the frame 1, and the driving gear 13 includes the following three stations:

[0062] In the first station, the driving gear 13 drives the conveyor belt 11 to move;

[0063] At the second station, the driving gear 13 drives the movable belt to move and the driving disk 125 to rotate;

[0064] At the third station, the driving gear 13 drives the driving disc 125 to rotate;

[0065] A first gear 118 is rotatably provided on the frame 1 for driving the conveyor belt 11 to move and meshing with the driving gear 13 , and a second gear 128 meshing with the driving gear 13 is provided on the driving disc 125 .

[0066] Specifically, the frame 1 is provided with a driving roller 111 for driving the conveyor belt 11 to move, the second gear 128 is provided with a sprocket for driving the driving wheel to rotate, a synchronous chain is provided between the sprocket and the driving roller 111, a connecting shaft 129 is provided on the driving disk 125, and the second gear 128 is provided on the connecting shaft 129. The frame 1 is provided with a motor, and a square synchronous rod 131 is slidably provided on the output end of the motor, and the driving gear 13 is fixedly mounted on the synchronous rod 131.

[0067] Furthermore, when the motor rotor is just placed on the support seat 112, the driving gear 13 is in the first position and is only meshed with the first gear 118. The motor outputs torque and drives the driving gear 13 to rotate through the synchronization rod 131. The driving gear 13 drives the sprocket to rotate through the first gear 118 meshed with it, and then drives the conveyor belt 11 and the motor rotor to move through the synchronization chain and the driving roller 111; in the process of the motor rotor contacting the guide plate 135 and moving along the slope on the guide plate 135, the driving gear 13 is in the second position, and the driving gear 13 is meshed with the first gear 118 and the second gear 128 at the same time, the conveyor belt 11 continues to move, and the first gear 118 is meshed with it. The meshing second gear 128 drives the connecting shaft 129 and the driving disk 125 to rotate, and the driving disk 125 drives the clamping block 121 to move closer to the center of the movable disk 12 and pushes the motor rotor to move toward the center of the movable disk 12; when the motor rotor is separated from the support seat 112, the driving gear 13 is in the third position, and the driving gear 13 is only meshed with the second gear 128. The driving gear 13 drives the driving disk 125 to rotate through the second gear 128 to fix the motor rotor on the movable disk 12, and the driving gear 13 continues to rotate and drives the movable disk 12 and the motor rotor to rotate through the driving disk 125, so that the camera can capture the rotation posture of the motor rotor, and then perform dynamic balancing coarse screening on the motor rotor.

[0068] As another embodiment further provided by the present invention, a screw rod 132 is provided on the driving gear 13 , a traction rope 137 is provided between the slider 136 and the driving gear 13 , and the slider 136 moves to extend the screw rod 132 into the frame 1 .

[0069] Specifically, a spring is provided between the slider 136 and the guide plate 135 , a rotating ring is provided on the driving gear 13 , and a traction rope 137 is provided between the slider 136 and the rotating ring.

[0070] Furthermore, when the motor rotor moves along the slope of the guide plate 135, the motor rotor gradually contacts the slider 136 and pushes the slider 136 to move along the guide groove 139. The slider 136 drives the rotating ring and the driving gear 13 to move axially through the traction rope 137, and the driving gear 13 gradually switches from the first station to the second station, and the screw 132 on the driving gear 13 gradually embeds into the screw hole on the frame 1. The driving gear 13 continues to rotate, and the screw 132 moves along the thread line in the screw hole, so that the driving gear 13 gradually switches from the second station to the third station.

[0071] As another embodiment further provided by the present invention, a plurality of movable blocks 134 are movably provided on the frame 1 , and the plurality of movable blocks 134 are combined to form screw holes adapted to the screw rods 132 .

[0072] Specifically, the movable block 134 is provided with a guide rod extending into the interior of the frame 1, a pushing plate 133 is rotatably provided on the frame 1 for driving the multiple movable blocks 134 to move, a torsion spring is provided between the pushing plate 133 and the frame 1, a planar thread is provided on the pushing plate 133, a sliding groove adapted to the planar thread on the pushing plate 133 is provided on the movable block 134, a spring is provided between the synchronization rod 131 and the motor output shaft, and a rubber block is provided at the end of the screw rod 132.

[0073] Furthermore, when the driving gear 13 is switched from the first station to the second station, the screw rod 132 is coupled with the screw hole composed of multiple movable blocks 134, and the driving gear 13 continues to rotate, and the screw rod 132 moves along the thread line in the screw hole, so that the driving gear 13 is gradually switched from the second station to the third station. At the same time, the spring between the synchronization rod 131 and the motor output shaft is stretched. When the coarse screening of the motor rotor dynamic balancing is completed, the rubber block at the end of the screw rod 132 abuts against the pushing plate 133, and the driving gear 13 continues to rotate, and the pushing plate 133 is driven to rotate by the friction force between the rubber block and the pushing plate 133. The plane thread on the pushing plate 133 moves along the slide groove on the movable block 134, pushing the movable block 134 to move away from the screw rod 132. At the same time, the torsion spring between the pushing plate 133 and the frame 1 accumulates elastic potential energy, the screw rod 132 is unlocked, and the driving gear 13 is pulled back to the first station by the spring between the synchronization rod 131 and the motor output shaft.

[0074] As another embodiment further provided by the present invention, a movable ring 126 is rotatably provided on the frame 1 , a torsion spring is provided between the movable ring 126 and the driving disk 125 , and a spring leaf 127 extending to the frame 1 is provided on the movable ring 126 .

[0075] Specifically, a rotation damper is provided between the movable disk 12 and the frame 1 , and a groove adapted to the spring leaf 127 is provided on the frame 1 .

[0076] Furthermore, when performing coarse screening, the motor rotor is placed in the support seat 112 on the conveyor belt 11, and the plug block 113 on the support seat 112 is inserted into the groove on the motor rotor to prevent the motor rotor from rolling on the support seat 112, and the motor rotor presses the trigger block 116, so that the trigger block 116 retracts into the support seat 112, and the cable 117 between the trigger block 116 and the push block 115 is relaxed. The push block 115 moves upward under the push of the spring and pushes the limit plate 114 to rotate in the direction away from the plug block 113 until the limit plate 114 abuts against the side wall of the groove on the motor rotor to fix the motor rotor on the support seat 112. At this time, the driving gear 13 is in the first position and is only meshed with the first gear 118. The motor outputs torque and drives the driving gear 13 to rotate through the synchronous rod 131. The driving gear 13 drives the sprocket to rotate through the first gear 118 meshed therewith, and then drives the conveyor belt 11 and the motor rotor to move through the synchronous chain and the driving roller 111.

[0077] The driving gear 13 continues to rotate, and the end of the motor rotor approaches the guide plate 135. The slider 136 on the guide plate 135 engages with the gear teeth on the motor rotor, and the motor rotor moves along the slope of the guide plate 135. Since the motor rotor moves upward relative to the plug block 113, the limit plate 114 on the plug block 113 cannot provide sufficient supporting force for the motor rotor. At this time, the slider 136 moves with the motor rotor under the cooperation of the guide block 138 and the inclined portion of the guide groove 139, which can prevent the motor rotor from rotating during the movement along the guide plate 135. The conveyor belt 11 continues to move, and the plug block 113 pushes the motor rotor along the The slope on the guide plate 135 moves, and the motor rotor moves upward relative to the support seat 112 until it faces a clamping block 121. At this time, the slider 136 drives the rotating ring and the driving gear 13 to move axially through the traction rope 137, and the driving gear 13 gradually switches from the first position to the second position. The screw 132 is coupled with the screw hole composed of multiple movable blocks 134, and the driving gear 13 is meshed with the first gear 118 and the second gear 128 at the same time. The conveyor belt 11 continues to move, and the first gear 118 drives the connecting shaft 129 and the driving disk 125 to rotate through the second gear 128 meshing therewith. The driving disk 125 drives the clamping block 121 to move toward the center of the movable disk 12 and pushes the motor rotor to move toward the center of the movable disk 12. The pull rope 124 between the tenon block 122 and the locking rod 123 is gradually tightened. When the clamping block 121 fixes the motor rotor, the tenon block 122 drives the locking rod 123 to separate from the frame 1 through the pull rope 124. The movable disk 12 is unlocked, and the screw rod 132 moves along the thread line in the screw hole, so that the driving gear 13 gradually switches from the second position to the third position. At the same time, the spring between the synchronization rod 131 and the motor output shaft is stretched, and the driving gear 13 is only meshed with the second gear 128. The driving gear 13 drives the driving disk 125 to rotate through the second gear 128, and fixes the motor rotor on the movable disk 12. The driving gear 13 continues to rotate and drives the movable disk 12 and the motor rotor to rotate through the driving disk 125, so that the camera can capture the rotation posture of the motor rotor, and then perform dynamic balancing coarse screening on the motor rotor. The driving disk 125 rotates relative to the movable ring 126, and the torsion spring accumulates elastic potential energy until the force applied by the torsion spring to the movable ring 126 is sufficient to deform the reed leaf 127, and the reed leaf 127 is separated from the groove on the frame 1, and the movable ring 126 rotates with the driving disk 125.

[0078] When the motor rotor dynamic balancing rough screening is completed, the rubber block at the end of the screw 132 abuts against the push plate 133, the driving gear 13 continues to rotate, and the friction between the rubber block and the push plate 133 drives the push plate 133 to rotate, and the flat thread on the push plate 133 moves along the slide groove on the movable block 134, pushing the movable block 134 to move away from the screw 132. At the same time, the torsion spring between the push plate 133 and the frame 1 accumulates elastic potential energy, the screw 132 is unlocked, and the driving gear 13 is pulled back to the first position by the spring between the synchronization rod 131 and the motor output shaft. At this time, the torsion spring releases the elastic potential energy to drive the movable ring 126 to rotate, and the reed 127 is re-stuck in the groove on the frame 1. Since a rotation damping is provided between the movable disk 12 and the frame 1, the driving disk 125 and the frame 1 are There is a rotation angle difference between the movable disks 12, and the torsion spring continues to release elastic potential energy to drive the driving disk 125 to rotate relative to the movable disk 12, so that the clamping block 121 moves away from the center of the movable disk 12, and the pull rope 124 is relaxed. When one of the locking rods 123 is facing the locking groove on the frame 1, the locking rod 123 extends from the movable disk 12 to fix the movable disk 12 on the frame 1, and the clamping block 121 corresponding to the locking rod 123 holds the motor rotor, and the driving gear 13 drives the conveyor belt 11 to move, so that the support seat 112 moves to directly below the motor rotor. The torsion spring drives the driving disk 125 to continue to rotate, driving the clamping block 121 to move away from the center of the movable disk 12, and the clamping block 121 holding the motor rotor moves downward, and the motor rotor is placed on the support seat 112 for the next work.

[0079] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic test device for dynamic balance of a motor rotor, characterized in that: The invention comprises a frame (1), on which is arranged: A conveyor belt (11) is provided with a support seat (112) for supporting a motor rotor, and an insert block (113) for limiting the motor rotor is provided on the support seat (112); A guide plate (135) for guiding the ramp of the motor rotor; A movable disk (12) is rotatably mounted on the frame (1), and a plurality of clamping blocks (121) for fixing the ends of the motor rotor are movably arranged on the movable disk (12), wherein: The conveyor belt (11) moves so that the end of the motor rotor moves along the slope of the guide plate (135) and gradually faces one of the clamping blocks (121); the clamping block (121) moves so that the motor rotor continues to move along the guide plate (135) and separates from the insert block (113); and the clamping block (121) fixes the motor rotor on the movable disk (12).

2. The automatic test device for dynamic balance of a motor rotor according to claim 1, characterized in that: The clamping block (121) is provided with a groove adapted to the gear teeth of the motor rotor, and the inserting block (113) is symmetrically and movably provided with a limit plate (114) for limiting the angle of the motor rotor.

3. The automatic test device for dynamic balance of a motor rotor according to claim 2, characterized in that: A push block (115) for pushing the limit plate (114) is slidably arranged on the insert block (113), and a trigger block (116) for driving the push block (115) to move is arranged on the support seat (112).

4. The automatic test device for dynamic balance of a motor rotor according to claim 1, characterized in that: A slider (136) is movably provided on the guide plate (135), and the slider (136) is engaged with a gear at the end of the motor rotor so that the motor rotor slides along the guide plate (135).

5. The automatic test device for dynamic balance of a motor rotor according to claim 4, characterized in that: A driving disk (125) for driving a plurality of clamping blocks (121) to move together is rotatably provided on the movable disk (12), and a locking rod (123) for fixing the movable disk (12) to the frame (1) is provided on the movable disk (12), and the clamping blocks (121) move together so that the locking rod (123) is separated from the frame (1).

6. The automatic test device for dynamic balance of a motor rotor according to claim 5, characterized in that: A driving gear (13) is movably arranged in the frame (1), and the driving gear (13) includes the following three stations: At the first station, the driving gear (13) drives the conveyor belt (11) to move; At the second station, the driving gear (13) drives the movable belt to move and the driving disk (125) to rotate; In the third working station, the driving gear (13) drives the driving disc (125) to rotate.

7. The automatic test device for dynamic balance of a motor rotor according to claim 6, characterized in that: The frame (1) is rotatably provided with a first gear (118) for driving the conveyor belt (11) to move and meshing with the driving gear (13), and the driving disc (125) is provided with a second gear (128) meshing with the driving gear (13).

8. The automatic test device for dynamic balance of a motor rotor according to claim 6, characterized in that: The driving gear (13) is provided with a screw rod (132), a traction rope (137) is provided between the slider (136) and the driving gear (13), and the slider (136) moves to extend the screw rod (132) into the frame (1).

9. The automatic test device for dynamic balance of a motor rotor according to claim 8, characterized in that: A plurality of movable blocks (134) are movably arranged on the frame (1), and the plurality of movable blocks (134) are combined to form a screw hole adapted to the screw rod (132).

10. The automatic test device for dynamic balance of a motor rotor according to claim 5, characterized in that: A movable ring (126) is rotatably arranged on the frame (1), a torsion spring is arranged between the movable ring (126) and the driving disk (125), and a spring leaf (127) extending to the frame (1) is arranged on the movable ring (126).

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