A motor end cover locking device and method

Abstract

This invention discloses a motor end cover locking device and method, comprising: a positioning mechanism for fixing a motor housing; a housing clamping mechanism including a pair of grippers for clamping and holding the motor housing; an end cover positioning mechanism for aligning the end cover on the motor housing; an end cover pressing mechanism for pressing and fixing the end cover after alignment; a first guiding mechanism extending above the end cover and aligning with two screw holes to guide screws into the screw holes; a second guiding mechanism extending below the end cover and aligning with the screw holes to guide screws into threaded holes on the main housing; a screw conveying and insertion mechanism for picking up a pair of screws and conveying them through the screw holes until they reach the threaded hole position; and a screw locking mechanism. This invention ensures that long screws are accurately inserted from the end cover end to the main housing end, achieving efficient and precise automatic locking of long screws and improving the assembly efficiency of motor end covers.

Description

[Technical Field]

[0001] This invention belongs to the field of brush assembly technology, and in particular relates to a motor end cover locking device and method. [Background Technology]

[0002] Electric motors, as power source components, are widely used in various fields. An electric motor typically includes a motor housing, two end caps located at both ends of the motor housing, a stator inside the motor housing, and a rotor. During motor assembly, the stator is first installed into the motor housing, then the rotor is installed into the stator. Next, the carbon brush holder module is installed onto the motor rotor. Finally, the upper end cap is placed on the motor housing, and the upper and lower end caps are externally secured with screws to complete the motor assembly.

[0003] Currently, there is a power transmission component for an air pump disclosed in patent publication number CN114421665A, which further discloses an air pump, the motor structure of which is as follows: Figure 1 As shown, it includes a main housing 300, a motor housing 200, and an end cover 201. The end cover 201 is locked and fixed to the main housing 300 by screws 202. When attaching the motor end cover to this air pump, the screw 202 first needs to pass through the through hole on the end cover 201, then go down through a space with no constraints that is equivalent to the axial length of the motor housing 200, and then be inserted into the threaded hole on the main housing 300. Only after the bottom of the screw 202 is inserted into the threaded hole on the main housing 300 can the screw tightening operation begin.

[0004] Since it is difficult to accurately insert the screw 202 from the end cover 201 into the main housing 300 using an automated method, the current method for locking the motor end cover is to manually insert the screw and then use a handheld screwdriver to lock the screw, which is inefficient.

[0005] The prior art patent publication number CN203141076U discloses an automatic screw-locking device for motor assembly. It uses a clamping mechanism to clamp the outer periphery of the motor housing and automatically locks the screws from above using a screwdriver bit. This device can meet the requirements for locking short screws, but it cannot be applied to the aforementioned longer screws.

[0006] Therefore, a new motor end cap locking device and method are needed to solve the above problems. [Summary of the Invention]

[0007] One of the main objectives of this invention is to provide a motor end cover locking device that can ensure that long screws are accurately inserted from the end cover end into the main housing end, thereby achieving efficient and accurate automatic fastening of long screws and improving the assembly efficiency of motor end covers.

[0008] The present invention achieves the above objective through the following technical solution: a motor end cover locking device, comprising...

[0009] Positioning mechanism to fix the motor housing;

[0010] A housing clamping mechanism includes a pair of grippers that clamp and hold the motor housing.

[0011] The end cap positioning mechanism corrects the position of the end cap on the motor housing.

[0012] An end cap clamping mechanism clamps and fixes the end cap after it has been aligned.

[0013] The first guide mechanism extends above the end cap and aligns with the two screw holes, guiding the screws into the screw holes;

[0014] The second guide mechanism extends below the end cap and aligns with the screw hole to guide the screw into the threaded hole on the main housing;

[0015] A screw transport and insertion mechanism picks up a pair of screws and transports them through the screw holes until they reach the threaded hole position; and

[0016] Screw-locking mechanism.

[0017] Furthermore, it also includes a screw feeding mechanism and a screw sorting mechanism that docks with the screw feeding mechanism; the screw sorting mechanism includes a rotating turntable, a lifting assembly disposed below the turntable, a limiting baffle disposed around the turntable, and a blocking assembly that controls the screws to enter the turntable one by one; the turntable has equal-angled storage grooves for receiving the screws; the lifting assembly is provided with a pair of push rods that lift the screws in two adjacent storage grooves on the turntable upwards so that the screw transport and insertion mechanism can pick them up; the distance between the screws in two adjacent storage grooves is the same as the distance between the two screw holes.

[0018] Furthermore, the screw handling and insertion mechanism includes a first motor, a first support plate driven by the first motor to move horizontally, a second motor fixed on the first support plate, a second support plate driven by the second motor to move up and down, and a pair of screw clamping modules fixed on the second support plate; the positional distribution of the pair of screw clamping modules corresponds to the positional distribution of the two screw through holes.

[0019] Furthermore, the end cap clamping mechanism includes a third cylinder and a pressure plate driven by the third cylinder to move up and down; the end cap positioning mechanism includes an eighth cylinder, a fifth support plate driven by the eighth cylinder to move horizontally, a ninth cylinder fixed on the fifth support plate, and a pair of positioning pins driven by the ninth cylinder to move up and down; the pair of positioning pins correspond one-to-one with the two screw holes on the end cap in the set state.

[0020] Furthermore, the first guiding mechanism includes a fourth cylinder, a third support plate driven by the fourth cylinder to perform horizontal linear motion, and a pair of first guiding components fixed on the third support plate; the first guiding component includes a fifth cylinder and a first guide block driven by the fifth cylinder to perform opening or closing actions.

[0021] Furthermore, when the first guide blocks are closed together, they form an upward-facing horn-shaped inlet and a straight segment limiting hole.

[0022] Furthermore, the second guide mechanism is provided with two components, including a tenth cylinder, a sixth support plate driven by the tenth cylinder to perform horizontal linear motion, and a pair of second guide components fixed on the sixth support plate. When in operation, the second guide components are located on the upper and lower sides of the gripper, respectively. The second guide component includes an eleventh cylinder and a pair of second guide blocks driven by the eleventh cylinder to perform opening or closing actions.

[0023] Furthermore, the second guide block forms a limiting through groove for the screw to pass through when it is closed; the gripper is provided with an open limiting guide groove for the screw to pass through; the limiting through groove and the limiting guide groove together form a guide channel to connect the screw hole and the threaded hole.

[0024] Another object of the present invention is to provide a method for locking a motor end cover, which includes the following steps:

[0025] S1. Equipped with a pair of grippers to hold and clamp the motor housing;

[0026] S2. Use a pair of positioning pins to insert into the two screw holes on the end cap to correct the position of the end cap, and keep the positioning pins in the positioning state.

[0027] S3. Press the end cap with the pressure plate, and the positioning pin is released and retracted;

[0028] S4. Set two pairs of first guide blocks that perform opening and closing actions, and place them in a closed state above the end cap and aligned with the screw holes;

[0029] S5. At least two pairs of second guide blocks are provided to perform opening and closing actions, and are placed in the closed state between the threaded holes of the end cap and the main housing.

[0030] S6. Clamp a pair of screws and insert them downwards into the screw hole between the first guide blocks, and then into the second guide block. After the first guide block opens, it is withdrawn, and the screw continues to penetrate downwards through the second guide block and enter the threaded hole.

[0031] S7. The end cap is locked and fixed by screwing the screw into the threaded hole using the screw-locking mechanism.

[0032] S8. After the second guide block opens, it retracts, the gripper releases its grip on the motor housing, and the pressure plate retracts and resets.

[0033] Furthermore, the second guide block is provided in four pairs, divided into two groups located on the upper and lower sides of the gripper respectively; the gripper is provided with an open limiting guide groove for the screw to pass through; the second guide block forms a limiting through groove for the screw to pass through when closed; the limiting through groove and the limiting guide groove together form a guide channel to connect the screw hole and the threaded hole.

[0034] Compared with existing technologies, the beneficial effects of the motor end cover locking device and method of the present invention are: it can ensure that long screws are accurately inserted from the end cover end to the main housing end, achieving efficient and precise automatic locking of long screws, and improving the assembly efficiency of motor end covers. Specifically,

[0035] 1) By setting up an end cap positioning mechanism and an end cap clamping mechanism, the precise positioning and holding of the end cap position is achieved, ensuring the stability of the end cap position and laying the foundation for the smooth fastening of screws;

[0036] 2) By setting up a housing clamping mechanism, the motor housing is clamped and held tightly, ensuring the positional stability of the motor housing during the screw tightening process, and further ensuring that the screws are successfully tightened in place;

[0037] 3) A first guide mechanism is set above the end cap, using two pairs of guide blocks to guide the screw insertion, ensuring that the screw can be smoothly inserted into the screw hole of the end cap. This reduces the requirements of the screw handling and insertion mechanism for screw clamping accuracy and transfer accuracy, saves the time of the screw handling and insertion mechanism for adjusting the initial position of the screw, and improves production efficiency.

[0038] 4) A second guiding mechanism is set between the end cap and the main housing. The guide block is used to accurately guide the screw insertion, ensuring that the screw can be accurately inserted into the threaded hole of the main housing. This fills the gap between the end cap screw hole and the main housing threaded hole, ensuring the accurate insertion of the screw and solving the problem of difficult drilling of long screws.

[0039] 5) A limiting guide groove is provided in the gripper, which, together with the limiting through groove in the second guiding mechanism, forms an intermittent guiding through groove between the end cover and the main housing, so as to ensure the accuracy and smoothness of screw insertion and improve screw fastening efficiency. [Attached Image Description]

[0040] Figure 1 This is a schematic diagram of the structure of the product to be assembled in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the locking device according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the screw feeding mechanism in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the screw handling and insertion mechanism in an embodiment of the present invention;

[0044] Figure 5 This is one of the structural schematic diagrams of an embodiment of the present invention;

[0045] Figure 6 This is a second partial structural schematic diagram of an embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the structure of the gripper, the first guide assembly, and the second guide assembly in an embodiment of the present invention.

[0047] The numbers in the diagram represent:

[0048] 100 - Motor end cover locking device; 200 - Motor housing; 201 - End cover; 202 - Screw; 300 - Main housing;

[0049] 1-Positioning mechanism; 2-Screw feeding mechanism;

[0050] 3-Screw feeding mechanism, 31-Turntable, 311-Storage groove, 32-Lifting assembly, 321-First cylinder, 322-Push rod, 33-Limiting baffle, 34-Blocking assembly, 341-Second cylinder, 342-Blocking plate;

[0051] 4-Screw handling and insertion mechanism, 41-First motor, 42-First support plate, 43-Second motor, 44-Second support plate, 45-Screw clamping module;

[0052] 5-End cap clamping mechanism, 51-Third cylinder, 52-Pressure plate, 53-Lever arm;

[0053] 6-End cap positioning mechanism, 61-Eighth cylinder, 62-Fifth support plate, 63-Ninth cylinder, 64-Positioning pin;

[0054] 7-Housing clamping mechanism, 71-Sixth cylinder, 72-Fourth support plate, 73-Seventh cylinder, 74-Gripper, 741-Limiting guide groove;

[0055] 8-First guide mechanism, 81-Fourth cylinder, 82-Third support plate, 83-First guide assembly, 831-Fifth cylinder, 832-First guide block, 8321-Bell inlet, 8322-Straight segment limiting hole;

[0056] 9-Second guide mechanism, 91-Tenth cylinder, 92-Sixth support plate, 93-Second guide assembly, 931-Eleventh cylinder, 932-Second guide block, 9321-Limiting through groove;

[0057] 10- Screw locking mechanism.

Detailed Implementation Methods

[0058] Example:

[0059] Please refer to Figures 1-7 This embodiment is a motor end cover locking device 100, which includes a positioning mechanism 1 for fixing the motor housing 200, a screw feeding mechanism 2 for automatically feeding screws 202, a screw separating mechanism 3 for connecting to the screw feeding mechanism 2 and separating two screws according to the screw 202 locking position spacing, a screw carrying and inserting mechanism 4 for picking up two screws 202 from the screw separating mechanism 3 and transporting them to the positioning mechanism 1, an end cover pressing mechanism 5 for pressing the end cover 201 next to the positioning mechanism 1, an end cover positioning mechanism 6 for accurately positioning the two screw holes on the end cover 201, a housing clamping mechanism 7 for clamping the motor housing 200 on the positioning mechanism 1, a first guide mechanism 8 located above the end cover 201 for guiding screws into the screw holes of the end cover 201, a second guide mechanism 9 for guiding screws in the axial section of the motor housing 200 so that they can be accurately inserted into the main housing 300, and a screw locking mechanism 10 located above the positioning mechanism 1.

[0060] The screw feeding mechanism 3 includes a rotating turntable 31, a lifting assembly 32 located below the turntable 31, a limiting baffle 33 surrounding the turntable 31 to prevent screws from falling off the turntable 31, and a blocking assembly 34 that controls the screws to enter the turntable 31 one by one. The turntable 31 has equal-angled storage grooves 311 for storing screw shanks. The output end of the screw feeding mechanism 2 is connected to the circumferential surface of the turntable 31. When the storage groove 311 rotates to the output end of the screw feeding mechanism 2, the screw feeding mechanism 2 outputs a screw into the storage groove 311. The stop assembly 34 blocks the subsequent screw. Then the turntable 31 continues to rotate. When the next storage groove 311 is connected to the output end of the screw feeding mechanism 2, the stop assembly 34 releases a screw into the storage groove 311. At this time, the two screws are distributed at 90° in the two storage grooves 311 on the turntable 31. The lifting assembly 32 lifts the two screws upward from the bottom so that the screw handling and insertion mechanism 4 can take them away. The lifting assembly 32 includes a first cylinder 321 and a pair of push rods 322 driven by the first cylinder 321 to move up and down. The top of the push rods 322 forms a flared tray, which guides the position of the bottom of the screw on the one hand, and increases the working area on the other hand to prevent the bottom of the screw from being deflected and unable to effectively lift it upward. The baffle assembly 34 includes a second cylinder 341 and a baffle plate 342 driven by the second cylinder 341 to move horizontally.

[0061] The screw handling and insertion mechanism 4 includes a first motor 41, a first support plate 42 driven by the first motor 41 to move horizontally, a second motor 43 fixed on the first support plate 42, a second support plate 44 driven by the second motor 43 to move vertically, and a pair of screw clamping modules 45 fixed on the second support plate 44. The distribution positions of the pair of screw clamping modules 45 correspond one-to-one with the positions of two adjacent receiving grooves 311 on the turntable 31, and one-to-one with the positions of two screw holes on the end cover 201. The screw handling and insertion mechanism 4 is mainly used to take out the two screws 202 separated from the screw distribution mechanism 3 and move them above the positioning mechanism 1, then align them with the two screw holes on the end cover 201 and insert the screws 202 into them until the screws 202 are inserted into the threaded holes on the main housing 300.

[0062] The end cap clamping mechanism 5 includes a third cylinder 51 and a pressure plate 52 driven by the third cylinder 51 to move up and down. The movable end of the third cylinder 51 is connected to one end of a lever arm 53, and the other end of the lever arm 53 is connected to the pressure plate 52. The pressure plate 52 is slidably mounted on a slide rail (not shown in the figure). The third cylinder 51 drives the lever arm 53 to swing by moving up and down, thereby driving the pressure plate 52 to move up and down. This structural design ensures that the third cylinder 51 does not occupy the space above the motor housing, providing space for the operation of other components.

[0063] The end cap positioning mechanism 6 includes an eighth cylinder 61, a fifth support plate 62 driven by the eighth cylinder 61 to move horizontally linearly, a ninth cylinder 63 fixed on the fifth support plate 62, and a pair of positioning pins 64 driven by the ninth cylinder 63 to move up and down. The pair of positioning pins 64 correspond one-to-one with the two screw holes on the end cap in the set state. The end cap positioning mechanism 6 is mainly used to detect and correct the assembly position of the end cap 201, ensuring that its screw holes are in the set position. The positioning pins 64 are inserted downwards, and the pointed conical guide surface on the positioning pins 64 achieves self-adaptive guidance. After the end cap is correctly positioned, the end cap clamping mechanism 5 can clamp the end cap.

[0064] The housing clamping mechanism 7 includes a sixth cylinder 71, a fourth support plate 72 driven by the sixth cylinder 71 to perform horizontal linear movement, a seventh cylinder 73 fixed on the fourth support plate 72, and a pair of grippers 74 driven by the seventh cylinder 73 to perform opening or clamping actions. The grippers 74 clamp the motor housing 200 by gripping. To prevent screws from being inserted, the grippers 74 are also provided with open limiting guide grooves 741 for screws to pass through. The limiting guide grooves 741 both prevent screws from entering and provide auxiliary guidance for screw insertion. The housing clamping mechanism 7 is mainly used to clamp the motor housing and prevent the motor housing from shifting and jumping out of the mounting groove of the main housing 300 during the screw tightening process, which would lead to assembly failure of the motor housing.

[0065] The first guiding mechanism 8 includes a fourth cylinder 81, a third support plate 82 driven by the fourth cylinder 81 to perform horizontal linear movement, and a pair of first guiding components 83 fixed on the third support plate 82. The first guiding component 83 includes a fifth cylinder 831 and a first guiding block 832 driven by the fifth cylinder 831 to perform opening or closing actions. When the two first guiding blocks 832 are closed together, they form an upward-facing flared inlet 8321 and a straight-segment limiting hole 8322. The flared inlet 8321 is used to guide the screw over a wider range, improving the tolerance of the initial screw placement position, reducing the accuracy requirement of the initial screw placement position, and improving the screw insertion efficiency. The bottom of the straight-segment limiting hole 8322 is aligned with the screw through hole on the end cap 201 to accurately guide the screw into the screw through hole. The first guiding mechanism 8 is mainly used to guide the screw to its initial position after it moves above the positioning mechanism 1 and before it passes through the screw through hole on the end cap, so that the screw can accurately pass through the screw through hole on the end cap.

[0066] The second guide mechanism 9 is provided with a pair, each acting on two screws. It includes a tenth cylinder 91, a sixth support plate 92 driven by the tenth cylinder 91 to perform horizontal linear movement, and a pair of second guide components 93 fixed on the sixth support plate 92. When in operation, the two second guide components 93 are located on the upper and lower sides of the gripper 74, respectively. The two second guide components 93, together with the limiting guide groove 741 on the gripper 74, form a guide channel to connect the screw hole on the end cover 201 with the threaded hole on the main housing 300. The second guide component 93 includes an eleventh cylinder 931 and a pair of second guide blocks 932 driven by the eleventh cylinder 931 to perform opening or closing actions. When the two second guide blocks 932 are closed, they form a limiting through groove 9321 for the screw to pass through.

[0067] This embodiment also provides a method for locking a motor end cover, which includes the following steps:

[0068] S1. After the product to be operated is in place, the sixth cylinder 71 in the housing clamping mechanism 7 is driven to extend, and the seventh cylinder 73 drives the gripper 74 to clamp and hold the motor housing 200.

[0069] S2. The eighth cylinder 61 in the end cap positioning mechanism 6 is driven to extend, and the positioning pin 64 moves to above the end cap 201. The ninth cylinder 63 drives the positioning pin 64 to descend, and the end cap 201 is corrected and positioned by inserting it into the two screw holes on the end cap 201.

[0070] S3. Positioning pin 64 remains in the positioning state. The third cylinder 51 in the end cover clamping mechanism 5 is activated, driving the pressure plate 52 to clamp the end cover 201. Positioning pin 64 is released and retracted.

[0071] S4. The fourth cylinder 81 in the first guide mechanism 8 is activated and extends, and the two first guide blocks 832 are in a closed state above the end cover 201 and aligned with the screw holes.

[0072] While steps S5 and S4 are being performed, the tenth cylinder 91 in the two second guide mechanisms 9 is activated and extended. The four second guide components 93 are divided into two pairs to guide the insertion paths of the two screws respectively. When the pair of second guide blocks 932 in the second guide components 93 are closed, they together with the limiting guide groove 741 in the gripper 74 to form a guide channel, connecting the screw holes on the end cover 201 with the threaded holes on the main housing 300. This guide channel can be continuous or discontinuous. In this embodiment, there is a gap between the second guide block 932 and the gripper 74. Therefore, the guide channel is a discontinuous channel.

[0073] S6. A pair of screw clamping modules 45 in the screw conveying and insertion mechanism 4 clamp two screws 202 above the first guide block 832. Then, under the guidance of the first guide block 832, the screw conveying and insertion mechanism 4 conveys the screws 202 downwards in sequence through the straight section limiting hole 8322, the screw through hole, the limiting through groove 9321 and the limiting guide groove 741. Then, the first guide mechanism 8 is withdrawn and the screws 202 are conveyed. The screws 202 continue to pass through the limiting through groove 9321 below the clamping claw 74 and finally enter the threaded hole of the main housing 300.

[0074] S7. The screw handling and insertion mechanism 4 releases its grip on the screw 202, and the screw locking mechanism 10 lowers its bit to align with the two screws 202 to perform the screw locking operation, thereby completing the screw locking and thus completing the locking assembly of the motor end cover.

[0075] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for locking a motor end cover, characterized in that: This is achieved using a motor end cover locking device, which includes: Positioning mechanism to fix the motor housing; A housing clamping mechanism includes a pair of grippers that clamp and hold the motor housing. The end cover positioning mechanism includes a pair of positioning pins for aligning the end cover on the motor housing. The pair of positioning pins correspond one-to-one with the positions of the two screw holes on the end cover in the set state. An end cap clamping mechanism includes a pressure plate for clamping and fixing the end cap after it has been aligned. The first guiding mechanism includes a first guiding component, which includes a fifth cylinder and a first guiding block driven by the fifth cylinder to perform an opening or closing action. The first guiding block extends into the end cap and aligns with two screw holes to guide the screws into the screw holes. The second guiding mechanism includes a second guiding assembly, which is located on the upper and lower sides of the gripper when in operation; the second guiding assembly includes an eleventh cylinder and a pair of second guiding blocks driven by the eleventh cylinder to open or close, the second guiding blocks extending into the underside of the end cap and aligned with the screw hole to guide the screw into the threaded hole on the main housing; A screw transport and insertion mechanism picks up a pair of screws and transports them through the screw holes until they reach the threaded hole position; and Screw-locking mechanism; The motor end cover locking method of the motor end cover locking device includes the following steps: S1. The pair of grippers clamp and hold the motor housing tightly; S2. Use a pair of positioning pins to insert into the two screw holes on the end cap to correct the position of the end cap, and keep the positioning pins in the positioning state. S3. Press the end cap with the pressure plate, and the positioning pin is released and retracted; S4. Set two pairs of first guide blocks that perform opening and closing actions, and place them in a closed state above the end cap and aligned with the screw holes; S5. At least two pairs of second guide blocks are provided to perform opening and closing actions, and are placed in the closed state between the threaded holes of the end cap and the main housing. S6. Clamp a pair of screws and insert them downwards into the screw hole between the first guide blocks, and then into the second guide block. After the first guide block opens, it is withdrawn, and the screw continues to penetrate downwards through the second guide block and enter the threaded hole. S7. The end cap is locked and fixed by screwing the screw into the threaded hole using the screw-locking mechanism. S8. After the second guide block opens, it retracts, the gripper releases its grip on the motor housing, and the pressure plate retracts and resets.

2. The motor end cover locking method as described in claim 1, characterized in that: It also includes a screw feeding mechanism and a screw sorting mechanism that docks with the screw feeding mechanism; the screw sorting mechanism includes a rotating turntable, a lifting assembly disposed below the turntable, a limiting baffle disposed around the turntable, and a blocking assembly that controls the screws to enter the turntable one by one; the turntable has equal-angled storage grooves for storing the screws; the lifting assembly is provided with a pair of push rods that lift the screws in two adjacent storage grooves on the turntable upwards so that the screw transport and insertion mechanism can pick them up; the distance between the screws in two adjacent storage grooves is the same as the distance between the two screw holes.

3. The motor end cover locking method as described in claim 1, characterized in that: The screw handling and insertion mechanism includes a first motor, a first support plate driven by the first motor to move horizontally, a second motor fixed on the first support plate, a second support plate driven by the second motor to move up and down, and a pair of screw clamping modules fixed on the second support plate; the positional distribution of the pair of screw clamping modules corresponds to the positional distribution of the two screw holes.

4. The motor end cover locking method as described in claim 1, characterized in that: The end cap clamping mechanism includes a third cylinder that drives the pressure plate to move up and down; the end cap positioning mechanism includes an eighth cylinder, a fifth support plate that is driven by the eighth cylinder to move horizontally and linearly, and a ninth cylinder that is fixed on the fifth support plate, and the pair of positioning pins that are driven by the ninth cylinder to move up and down.

5. The motor end cover locking method as described in claim 1, characterized in that: The first guiding mechanism includes a fourth cylinder and a third support plate driven by the fourth cylinder to perform horizontal linear motion, and the pair of first guiding components are fixed on the third support plate.

6. The motor end cover locking method as described in claim 5, characterized in that: When the first guide block is closed together, it forms an upward-facing horn-shaped inlet and a straight segment limiting hole.

7. The motor end cover locking method as described in claim 1, characterized in that: The second guide mechanism is provided with two components, including a tenth cylinder and a sixth support plate driven by the tenth cylinder to perform horizontal linear motion; the pair of second guide components are fixed on the sixth support plate.

8. The motor end cover locking method as described in claim 7, characterized in that: The second guide block forms a limiting through groove for the screw to pass through when it is closed; the jaw is provided with an open limiting guide groove for the screw to pass through; the limiting through groove and the limiting guide groove together form a guiding channel to connect the screw hole and the threaded hole.

9. The motor end cover locking method as described in claim 1, characterized in that: The second guide block is provided in four pairs, divided into two groups located on the upper and lower sides of the gripper respectively; the gripper is provided with an open limiting guide groove for the screw to pass through; the second guide block forms a limiting through groove for the screw to pass through when closed; the limiting through groove and the limiting guide groove together form a guide channel to connect the screw hole and the threaded hole.

Images