A motor end cover punching machine that is easy to load and unload

Abstract

The present invention discloses a motor end cover punching machine that is convenient for loading and unloading, and relates to the field of motor housing processing technology. The machine comprises a workbench, a pick-and-place robot arranged on one side of the workbench for taking out the motor end cover, a punch driving end arranged on the workbench, and a nozzle arranged on one side of the punch driving end. The machine also comprises a punching head rotatably arranged at the bottom of the punch driving end, an expansion structure arranged inside the punching head for expanding the punching head, and a fixing structure arranged on the workbench for flexibly fixing the inner wall of the motor end cover. The present invention solves the problem that debris of a threaded punch easily enters the thread gap with water flow, resulting in debris remaining on the punch surface, which interferes with the punching during subsequent punching and produces burrs on the hole mouth, affecting the quality, assembly and life of the end cover; and the problem that when the existing outer enclosure clamp fixes the motor end cover, the clamping force on the thin material end cover easily exceeds its tolerance range, causing deformation, affecting assembly and performance.

Description

Technical Field

[0001] The invention relates to the technical field of motor housing processing, in particular to a motor end cover punching machine which is convenient for loading and unloading. Background Art

[0002] The motor end cap punching machine is a specialized machine used for processing motor end caps. It is primarily used to punch various holes (such as bolt holes, ventilation holes, and locating holes) on motor end caps to meet motor assembly and heat dissipation requirements. This machine uses a mechanically or hydraulically driven punch to punch and form the motor end cap material, offering high efficiency, precision, and automation.

[0003] For example, a motor end cover punching machine with announcement number CN117900324B, which is easy to load and unload, is equipped with a stamping component and a punching component. At the same time, the radial punch punches the radial surface of the motor end cover workpiece, thereby improving the punching accuracy, preventing the hole position from being offset, and preventing the workpiece from being deformed due to secondary clamping and punching, thereby improving the punching efficiency and preventing the parts from being deformed and damaged during punching. However, the existing motor end cover punching machine still has some shortcomings.

[0004] Existing motor end cap punching machines need to perform threaded punching in the center of the motor end cap. The threaded circular holes in the motor end cap are used to install set screws to fix the rotor shaft or bearings and prevent axial movement. The punch of the existing motor end cap punching machine will be stained with debris after each punching. The existing method of cleaning the punch head debris is mostly to spray the punch head with water during punching (spraying water can also play a role in reducing the temperature of the punch head, thereby extending the service life of the punch head). However, due to the design of the external thread of the existing threaded punch, debris can easily enter the thread gap on the other side of the punch head with the water flow, resulting in debris remaining on the punch head surface. When the punch with debris continues to perform subsequent punching work, these debris will interfere with the punching process, resulting in burrs at the end cap hole after punching. The presence of burrs not only affects the appearance quality of the motor end cap, but may also have an adverse effect on its assembly performance and service life, thereby reducing the overall quality of the motor end cap after punching.

[0005] In addition, during the punching operation of the motor end cover, in order to ensure the accuracy and stability of the punching position, the motor end cover needs to be effectively fixed. At present, the existing clamping of the motor end cover mostly uses an outer surrounding clamp to fix the motor end cover. However, when the outer surrounding clamp provides the clamping force to fix the motor end cover, for some motor end covers made of thinner materials, the clamping force applied by the outer surrounding clamp may exceed the tolerance range, causing the motor end cover to deform during the clamping process. This deformation not only affects the dimensional accuracy and shape accuracy of the motor end cover, but may also damage its internal structure, thereby reducing the overall quality of the motor end cover and affecting its subsequent assembly and performance.

[0006] In response to the above problems, it is urgent to carry out innovative design based on the original motor end cover punching machine. Summary of the Invention

[0007] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a motor end cover punching machine that is easy to load and unload, so as to solve the problem proposed in the above background technology that the existence of burrs not only affects the appearance quality of the motor end cover, but may also have an adverse effect on its assembly performance and service life, thereby reducing the overall quality of the motor end cover after punching, and the clamping force applied by the outer surrounding clamp may exceed the bearing range of the motor end cover, thereby causing the motor end cover to deform during the clamping process. Such deformation not only affects the dimensional accuracy and shape accuracy of the motor end cover, but may also damage its internal structure, thereby reducing the overall quality of the motor end cover and affecting its subsequent assembly and use performance.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a motor end cover punching machine that is convenient for loading and unloading, comprising a workbench, a pick-and-place robot arranged on one side of the workbench for taking out the motor end cover, a punch driving end arranged on the workbench, and a nozzle arranged on one side of the punch driving end, and also comprising a punching head rotatably arranged at the bottom of the punch driving end, an expansion structure arranged inside the punching head for expanding the punching head, a fixing structure arranged on the workbench for flexibly fixing the inner wall of the motor end cover, a driving assembly arranged at the bottom of the workbench for driving the fixing structure to rotate and fix the motor end cover, and a power-off structure arranged at the bottom of the workbench based on the reset of the fixing structure by being squeezed by the punching head, the inner wall of the punching head is provided with a cavity for the expansion structure to expand, the bottom of the punch driving end is rotatably provided with a connecting end, the punching head is specifically four-petal, the top of the punching head is fixedly connected to a connecting rod in an array, and all the connecting rods are rotatably arranged at the bottom of the connecting end.

[0009] Preferably, the expansion structure includes a pull rod arranged in the connecting end and a lead head rotatably arranged at one end of the bottom of the pull rod, the bottom of the lead head is rotatably provided with traction rods distributed at equal angles, the end of the traction rod is fixedly connected to a connecting ring, the connecting ring is provided with a connecting piece, and the end of the connecting piece is fixedly connected to the inner wall of the punching head.

[0010] Preferably, the top of the pull rod is fixedly connected to a threaded rod, the radius of the threaded rod is the same as the radius of the pull rod, the top of the threaded rod is fixedly connected to a limit block, the radius of the limit block is larger than the radius of the threaded rod, a sliding groove is provided in the driving end of the punch for the pull rod to retract upward, and a rotating head is rotatably provided inside the sliding groove, the rotating head is electrically connected to the driving end of the punch, a threaded groove is provided inside the rotating head, and the threaded groove is engaged with the threaded rod.

[0011] Preferably, the fixed structure includes a limit plate fixedly connected to the top of the workbench, a positioning block slidably arranged on the limit plate and distributed at equal angles, and a driving plate rotatably arranged at the bottom of the workbench, the limit plate is provided with limit slide grooves distributed at equal angles, the workbench is provided with a through groove of the same size as the limit slide groove, the bottom of the positioning block is fixedly connected to a slider, the bottom of the slider is fixedly connected to a slide rod, and the driving plate is provided with driving grooves distributed at equal angles for the sliding of the slide rod.

[0012] Preferably, the driving assembly includes a driven rod fixedly connected to one side of the driving disk, a hydraulic press arranged at the bottom of the workbench, and a rotating sleeve fixed to the top of the driving disk. The end of the hydraulic press is fixedly connected to a connecting piece, and a traction pin is rotatably connected to the inner wall of the connecting piece. The driven rod is sleeved on the outer wall of the traction pin through a waist groove opened through the surface of the driven rod, and the top of the rotating sleeve is rotatably set at the bottom of the workbench.

[0013] Preferably, the power-off structure includes supporting slides distributed in an array at the bottom of the workbench, a base plate fixedly connected to the bottom of the four supporting slides, a downward pressure transmission plate slidably arranged on the four supporting slides, an extension plate fixedly connected to the bottom of the workbench, and a receiving sensor electrically connected to the back of the extension plate. A pressure rod is fixedly connected to the center of the top of the downward pressure transmission plate, and four springs are arranged between the downward pressure transmission plate and the base plate, and the four springs are respectively mounted on the four supporting slides.

[0014] Preferably, one side of the downward pressure transmission plate is electrically connected to a connecting plate, and an input terminal is provided on the top of the connecting plate, one side of the extension plate is fixedly connected to an output terminal, the input terminal is in contact with the output terminal, one side of the receiving sensor is electrically connected to a transmission line, and one end of the transmission line is electrically connected to the hydraulic press.

[0015] Preferably, the outer wall of the positioning block and the inner wall of the gripper of the pick-and-place robot are both provided with flexible rubber sleeves.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the punching operation is completed, the rotating head inside the driving end of the punch will start to rotate in the opposite direction. As the rotating head rotates in the opposite direction, the threaded rod connected to it will move downward under the drive of the rotating head. The downward movement of the threaded rod will drive the pull rod to move downward together. The leading head at the bottom of the pull rod drives the four traction rods to expand around, so that the punching head is driven by the traction rod to expand. As the traction rod expands to the surroundings, the force will be transmitted to the punching head through the connecting ring and the connecting piece, so that the punching head that was originally in a closed state will expand. After the punching head expands, its internal space increases, so that when the subsequent nozzle flushes the punching head, the debris will not be pushed by the water flow and flow into the threaded gap on the other side of the punching head.

[0018] 2. The motor end cover that needs to be punched is placed on the closed positioning block through the clamping of the pick-and-place robot, and then the hydraulic press is started. The hydraulic rod at the end of the hydraulic press begins to extend outward, and the connecting piece at the end of the hydraulic rod drives the driven rod to move, thereby causing the driven rod to drive the driving disk to rotate. The driving disk rotates at the bottom of the workbench through the rotating sleeve, so that the slide rod is driven by the sliding of the driving groove to drive the slider to move toward one end of the limiting slide groove, so that the positioning block is against the inner wall of the motor end cover. The method of pressing against the inner wall of the motor end cover from the inside can avoid the clamping deformation of the motor end cover caused by the external clamping force of the traditional outer surrounding clamp. Secondly, the flexible rubber sleeve arranged on the outer wall of the positioning block and the inner wall of the gripper of the pick-and-place robot can increase the clamping friction on the motor end cover, and the rubber sleeve itself can also reduce the clamping force on the motor end cover to avoid deformation of the motor end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the motor end cover punching machine of the present invention.

[0020] Figure 2 This is a diagram of the overall structure of the motor end cover punching machine of the present invention.

[0021] Figure 3 It is a schematic diagram of the fixing structure and power-off structure of the present invention.

[0022] Figure 4 This is a schematic diagram from another angle of the fixing structure and the power-off structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the expanded state of the punching head of the present invention.

[0024] Figure 6 It is a schematic diagram of the internal traction and expansion structure of the punching head of the present invention.

[0025] Figure 7 It is a schematic diagram of the fixed structure of the present invention.

[0026] Figure 8 for Figure 3A magnified schematic diagram of the structure at point A.

[0027] In the figure: 1. workbench; 2. pick-and-place robot; 3. punch driving end; 4. nozzle; 5. punching head; 501. connecting rod; 6. positioning block; 601. slider; 7. pressure rod; 8. limit plate; 801. limit slide; 9. driving plate; 901. driving groove; 902. driven rod; 903. rotating sleeve; 10. bottom plate; 11. supporting slide; 12. downward pressure transmission plate; 13. spring; 14. hydraulic press; 1401. connecting part; 15. extension plate; 16. output end; 17. input end; 18. transmission line; 19. receiving sensor; 20. connecting end; 21. pull rod; 22. lead; 23. threaded rod; 24. limit block; 25. connector; 26. connecting ring; 27. traction rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1 to 8 The present invention provides a technical solution: a motor end cover punching machine that is convenient for loading and unloading, comprising a workbench 1, a pick-and-place robot 2 arranged on one side of the workbench 1 for taking out the motor end cover, a punch driving end 3 arranged on the workbench 1, and a nozzle 4 arranged on one side of the punch driving end 3, further comprising a punching head 5 rotatably arranged at the bottom of the punch driving end 3, an expansion structure arranged inside the punching head 5 for expanding the punching head 5, a fixing structure arranged on the workbench 1 for flexibly fixing the inner side wall of the motor end cover, a driving assembly arranged at the bottom of the workbench 1 for driving the fixing structure to rotate and fix the motor end cover, and a power-off structure arranged at the bottom of the workbench 1 based on being squeezed by the punching head 5 to reset the fixing structure, the inner wall of the punching head 5 is provided with a cavity for expanding the expansion structure, the bottom of the punch driving end 3 is rotatably provided with a connecting end 20, the punching head 5 is specifically four-petal, the top of the punching head 5 is fixedly connected to a connecting rod 501 in an array, and all the connecting rods 501 are rotatably arranged at the bottom of the connecting end 20.

[0030] As this embodiment, the motor end cover that needs to be punched is placed on the closed fixed structure through the clamping of the pick-and-place robot 2, and then the driving component is started. The driving component drives the fixed structure to rotate, and the fixed structure after rotation expands and firmly presses against the inner wall of the motor end cover. Then the punch driving end 3 is started, and the punch driving end 3 drives the expanded structure to be lifted up through the rotating head arranged inside it, so that the punching head 5 in the expanded state is closed, and then the rotary punching work is started. During the punching work, the punching head 5 contacts the power-off structure after punching, so that the power-off structure is pressed down and the driving component is pressed. The power to the component is cut off and a reset signal is input by receiving sensor 19, so that the fixed structure is closed again. The closed fixed structure releases the fixation of the motor end cover, and then it is convenient for the pick-and-place robot 2 to remove the motor end cover after punching. In addition, during the punching process of the punching head 5, the nozzle 4 continuously sprays water and cools the punching head 5 and the motor end cover. When the punching head 5 finishes punching, the rotating head drives the expansion structure to move downward, so that the expansion structure expands the punching head 5, thereby preventing debris from being pushed by the water flow to the threaded gap on the other side of the punching head 5 during the process of the nozzle 4 flushing the punching head 5.

[0031] The expansion structure includes a pull rod 21 arranged in the connecting end 20 and a leading head 22 rotatably arranged at one end of the bottom of the pull rod 21. The bottom of the leading head 22 is rotatably provided with traction rods 27 distributed at equal angles. The end of the traction rod 27 is fixedly connected to a connecting ring 26, and a connecting piece 25 is sleeved on the connecting ring 26. The end of the connecting piece 25 is fixedly connected to the inner wall of the punching head 5.

[0032] The top of the pull rod 21 is fixedly connected to a threaded rod 23, the radius of the threaded rod 23 is the same as the radius of the pull rod 21, the top of the threaded rod 23 is fixedly connected to a limit block 24, the radius of the limit block 24 is larger than the radius of the threaded rod 23, and a sliding groove is provided in the punch driving end 3 for the pull rod 21 to retract upward, and a rotating head is provided inside the sliding groove for rotation. The rotating head is electrically connected to the punch driving end 3, and a threaded groove is provided inside the rotating head, and the threaded groove is engaged with the threaded rod 23.

[0033] As the present embodiment, when punching is required, the punch driving end 3 starts the rotation of the rotary head, so that the rotary head drives the threaded rod 23 to move upward, and while the threaded rod 23 moves, the pull rod 21 pulls the leading head 22 to move upward, and the traction rod 27 at the bottom of the leading head 22 drives the connecting piece 25 to close inward through the connecting ring 26, so that the connecting piece 25 drives the punching head 5 divided into four petals to close into a complete punch shape, so as to punch the motor end cover. When the punching is completed and the debris on the punching head 5 needs to be cleaned, the rotary head rotates in the opposite direction to drive the threaded rod 23 to move downward. In addition, the radius of the limit block 24 is wider than the radius of the threaded rod 23, so that the limit block 24 serves as the limit for the downward movement of the threaded rod 23. When the threaded rod 23 moves downward, the threaded rod 23 pushes the pull rod 21 to move downward, and the leading head 2 at the bottom of the pull rod 21 2 drives the four traction rods 27 to expand in all directions (the connection between the traction rods 27 and the leading head 22 is a universal ball connection), so that the punching head 5 is driven by the traction rods 27 to expand, thereby preventing debris from being pushed by the water flow into the threaded gap on the other side of the punching head 5 during the process of the nozzle 4 flushing the punching head 5 (it should be noted that the punch driving end 3 serves as the main control unit, the rotating head is arranged in the punch driving end 3 and is driven to rotate by the internal driving motor of the punch driving end 3, and the connecting end 20 is arranged at the bottom of the punch driving end 3, and the connecting end 20 is directly rotated by the punch driving end 3. When the driving motor of the punch driving end 3 receives a signal, it preferentially drives the rotating head to rotate, so that the punching head 5 divided into four petals is closed, and then the punch driving end 3 rotates while driving the connecting end 20).

[0034] The fixed structure includes a limit plate 8 fixedly connected to the top of the workbench 1, a positioning block 6 slidingly arranged on the limit plate 8 and distributed at equal angles, and a driving plate 9 rotatably arranged at the bottom of the workbench 1. The limit plate 8 is provided with limit slide grooves 801 distributed at equal angles, and the workbench 1 is provided with a through groove of the same size as the limit slide groove 801. The bottom of the positioning block 6 is fixedly connected to a slider 601, and the bottom of the slider 601 is fixedly connected to a slide rod. The driving plate 9 is provided with driving grooves 901 distributed at equal angles for the sliding of the slide rod.

[0035] As this embodiment, when the motor end cover is placed on the limit plate 8, the positioning block 6 is driven by the driving assembly so that the slider 601 at its bottom moves in the driving groove 901 through the slide rod, and the slider 601 moves along the limit slide 801 and toward one end of the limit slide 801, and then one side of the positioning block 6 is pressed against the inner wall of the motor end cover, thereby internally fixing the motor end cover.

[0036] The driving assembly includes a driven rod 902 fixedly connected to one side of the driving disk 9, a hydraulic press 14 arranged at the bottom of the workbench 1, and a rotating sleeve 903 fixed to the top of the driving disk 9. The end of the hydraulic press 14 is fixedly connected to a connecting piece 1401, and a traction pin is rotatably connected to the inner wall of the connecting piece 1401. The driven rod 902 is sleeved on the outer wall of the traction pin through a waist groove opened through its surface, and the top of the rotating sleeve 903 is rotatably set at the bottom of the workbench 1.

[0037] In this embodiment, when the motor end cover needs to be fixed by the positioning block 6, the hydraulic press 14 is started, and the hydraulic rod at the end of the hydraulic press 14 begins to extend outward. The connecting piece 1401 at the end of the hydraulic rod drives the driven rod 902 to move, so that the driven rod 902 drives the driving disk 9 to rotate (specifically, during the extension of the hydraulic rod, the rotation connection point between the connecting piece 1401 at its end and the end of the driven rod 902 will serve as a fulcrum. The force of the hydraulic rod in the extension direction will cause the driven rod 902 to move around this fulcrum. As the hydraulic rod continues to extend and the force is continuously applied, the driven rod 902 begins to move. That is to say, the driven rod 902 moves under the action of the hydraulic rod, and its interaction with the driving disk 9 during the movement eventually drives the driving disk 9 to rotate). The driving disk 9 rotates at the bottom of the workbench 1 through the rotating sleeve 903, so that the slide rod is driven by the sliding of the driving groove 901 to drive the slider 601 to move toward one end of the limiting slide groove 801, thereby making the positioning block 6 press against the inner wall of the motor end cover, fixing it for subsequent punching work.

[0038] The power-off structure includes support slides 11 distributed in an array at the bottom of the workbench 1, a base plate 10 fixedly connected to the bottom of the four support slides 11, a downward pressure transmission plate 12 slidingly set on the four support slides 11, an extension plate 15 fixedly connected to the bottom of the workbench 1, and a receiving sensor 19 electrically connected to the back of the extension plate 15. A pressure rod 7 is fixedly connected to the center of the top of the downward pressure transmission plate 12, and four springs 13 are arranged between the downward pressure transmission plate 12 and the base plate 10, and the four springs 13 are respectively mounted on the four support slides 11.

[0039] One side of the downward pressure transmission plate 12 is electrically connected to the connecting plate, and an input terminal 17 is provided on the top of the connecting plate. One side of the extension plate 15 is fixedly connected to the output terminal 16, and the input terminal 17 is in contact with the output terminal 16. One side of the receiving sensor 19 is electrically connected to the transmission line 18, and one end of the transmission line 18 is electrically connected to the hydraulic press 14.

[0040] As the present embodiment, when the punching head 5 contacts the pressure rod 7 on the top of the downward pressure transmission plate 12 after punching, and applies downward pressure to the pressure rod 7, the pressure rod 7 then drives the downward pressure transmission plate 12 to squeeze the spring 13 downward, and makes the input end 17 on the connecting plate on one side of the downward pressure transmission plate 12 release the contact with the output end 16. When the input end 17 is released from contact with the output end 16, the output end 16 transmits a reset signal to the receiving sensor 19, and then the receiving sensor 19 transmits a contraction signal to the hydraulic press 14 through the transmission line 18, so that the hydraulic press 14 drives the driving disk 9 to rotate in the opposite direction, thereby causing the positioning block 6 to close and contract inward again, and release the fixation of the motor end cover. After the punching is completed, the punching machine controls the punch driving end 3 to drive the punching head 5 upward through the driving connection end 20, thereby facilitating the pick-and-place robot 2 to remove the released motor end cover. When the compressed spring 13 is in the process of gradually recovering, it will synchronously push the downward pressure transmission plate 12 until the spring 13 is fully recovered, realizing the input end 17 Re-contact with the output terminal 16 for the next work (it should be noted that the compressed spring 13 has a certain recovery time to fully recover. During this recovery time, it is enough for the punching head 5 to move up and separate from the motor end cover, and the punching head 5 remains in a closed state before separating from the motor end cover. After separating from the motor end cover, the expansion work is carried out).

[0041] The outer wall of the positioning block 6 and the inner wall of the gripper of the pick-and-place robot 2 are both provided with flexible rubber sleeves.

[0042] As this embodiment, the flexible rubber sleeve provided on the outer wall of the positioning block 6 and the inner wall of the gripper of the pick-and-place robot 2 can increase the clamping friction force on the motor end cover, and the rubber sleeve itself can also reduce the clamping force on the motor end cover to avoid deformation of the motor end cover.

[0043] Working principle: When using this motor end cover punching machine which is easy to load and unload.

[0044] 1. Loading and fixing punching stage: The motor end cover that needs to be punched is clamped and placed on the closed positioning block 6 by the pick-and-place robot 2, and then the hydraulic press 14 is started. The hydraulic rod at the end of the hydraulic press 14 begins to extend outward, and the connecting piece 1401 at the end of the hydraulic rod drives the driven rod 902 to move, so that the driven rod 902 drives the driving disk 9 to rotate, and the driving disk 9 rotates at the bottom of the workbench 1 through the rotating sleeve 903, so that the slide rod is driven by the sliding of the driving groove 901 to drive the slider 601 to move toward one end of the limiting slide groove 801, so that the positioning block 6 is against the inner wall of the motor end cover, and then the punch driving end 3 is started to start the rotating head to rotate, so that the rotating head drives the threaded rod 23 to move upward. While the threaded rod 23 moves, the pull rod 21 pulls the leading head 22 upward, and the traction rod 27 at the bottom of the leading head 22 drives the connecting piece 25 to close inward through the connecting ring 26, so that the connecting piece 25 drives the punching head 5 divided into four petals to close into a complete punch shape, thereby performing the punching work.

[0045] 2. Reset stage: When the punching head 5 contacts the pressure rod 7 at the top of the downward pressure transmission plate 12 after punching and applies downward pressure to the pressure rod 7, the pressure rod 7 then drives the downward pressure transmission plate 12 to squeeze the spring 13 downward, and makes the input end 17 on the connecting plate on one side of the downward pressure transmission plate 12 release the contact with the output end 16. When the input end 17 and the output end 16 are released from contact, the output end 16 transmits a reset signal to the receiving sensor 19, and then the receiving sensor 19 transmits a contraction signal to the hydraulic press 14 through the transmission line 18, so that the hydraulic press 14 drives the driving disk 9 to rotate in the opposite direction, thereby causing the positioning block 6 to close and contract inward again, and release the fixation of the motor end cover. Then the pick-and-place robot 2 can remove the released motor end cover. The compressed spring 13 will synchronously push the downward pressure transmission plate 12 to move up and reset during the gradual recovery process, until the spring 13 is completely restored, and the input end 17 and the output end 16 are re-contacted for the next work.

[0046] 3. Punch expansion and cleaning stage: While the punching head 5 is punching the motor end cap, the nozzle 4 will continuously spray water to cool the punching head 5 and the motor end cap being punched. (It should be noted that because the punching operation generates a large amount of heat, continuous water spraying can effectively prevent the punching head 5 from being damaged due to overheating. It can also avoid quality problems such as deformation of the motor end cap due to high temperature, ensuring the smooth progress of the punching work and the quality stability of the product.) When the punching operation is completed, the rotating head inside the punch drive end 3 will begin to rotate in the reverse direction. As the rotating head rotates in the reverse direction, the threaded rod 23 connected to it will move downward under the drive of the rotating head. The downward movement of the threaded rod 23 drives the pull rod 21 downward along with it. The lead 22 at the bottom of the pull rod 21 drives the four traction rods 27 to expand in all directions (the connection between the traction rods 27 and the lead 22 is a universal ball joint), causing the punching head 5 to expand under the drive of the traction rods 27. As the traction rods 27 expand in all directions, the force is transmitted to the punching head 5 through the connecting ring 26 and the connector 25, causing the punching head 5, which was originally in a closed state, to expand. After the punching head 5 expands, its internal space increases. In this way, when the subsequent nozzle 4 flushes the punching head 5, debris will not be pushed by the water flow and flow into the threaded gap on the other side of the punching head 5. (It should be noted that because the threaded gaps of the punching head 5 are prone to accumulation of debris, if debris enters them, it will not only affect the normal use of the punching head 5, but may also cause the punching head 5 to malfunction in subsequent operations. After the punching head 5 is expanded, the debris can be washed away more smoothly by the water flow, thereby facilitating a thorough flushing and cleaning of the punching head 5, ensuring the cleanliness of the punching head 5 and the effect of the next use).

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor end cap punching machine that is convenient for loading and unloading, comprising a workbench (1), a pick-and-place robot (2) disposed on one side of the workbench (1) for taking out the motor end cap, a punch driving end (3) disposed on the workbench (1), and a nozzle (4) disposed on one side of the punch driving end (3), characterized in that: The invention also includes a punching head (5) rotatably arranged at the bottom of the punch driving end (3), an expansion structure arranged inside the punching head (5) for expanding the punching head (5), a fixing structure arranged on the workbench (1) for flexibly fixing the inner wall of the motor end cover, a driving component arranged at the bottom of the workbench (1) for driving the fixing structure to rotate and fix the motor end cover, and a power-off structure arranged at the bottom of the workbench (1) based on being squeezed by the punching head (5) to reset the fixing structure, the inner wall of the punching head (5) is provided with a cavity for the expansion structure to expand, the bottom of the punch driving end (3) is rotatably provided with a connecting end (20), the punching head (5) is specifically four-petal, the top of the punching head (5) is fixedly connected to a connecting rod (501) in an array, and All the connecting rods (501) are rotatably arranged at the bottom of the connecting end (20), and the expansion structure includes a pull rod (21) arranged in the connecting end (20) and a lead (22) rotatably arranged at one end of the bottom of the pull rod (21), and the bottom of the lead (22) is rotatably provided with a traction rod (27) distributed at equal angles, and the end of the traction rod (27) is fixedly connected to a connecting ring (26), and a connecting piece (25) is sleeved on the connecting ring (26), and the end of the connecting piece (25) is fixedly connected to the inner wall of the punching head (5), and the top of the pull rod (21) is fixedly connected to a threaded rod (23), and the radius of the threaded rod (23) is the same as that of the pull rod (21), and the top of the threaded rod (23) is fixed. A limit block (24) is connected, the radius of the limit block (24) is larger than the radius of the threaded rod (23), a slide groove for the pull rod (21) to retract upward is provided in the punch driving end (3), and a rotating head is provided inside the slide groove for rotation, the rotating head is electrically connected to the punch driving end (3), a thread groove is provided inside the rotating head, and the thread groove is engaged with the threaded rod (23), the power-off structure includes support slides (11) distributed in an array at the bottom of the workbench (1), a bottom plate (10) fixedly connected to the bottom of the four support slides (11), a downward pressure transmission plate (12) slidably set on the four support slides (11), an extension plate (15) fixedly connected to the bottom of the workbench (1), and an extension plate (15) electrically connected to the extension plate ( 15) a receiving sensor (19) on the back side, a pressure rod (7) is fixedly connected to the center of the top of the downward pressure transmission plate (12), four springs (13) are provided between the downward pressure transmission plate (12) and the bottom plate (10), and the four springs (13) are respectively mounted on four supporting slide bars (11), one side of the downward pressure transmission plate (12) is electrically connected to a connecting plate, and an input terminal (17) is provided on the top of the connecting plate, one side of the extension plate (15) is fixedly connected to an output terminal (16), the input terminal (17) is in contact with the output terminal (16), one side of the receiving sensor (19) is electrically connected to a transmission line (18), and one end of the transmission line (18) is electrically connected to the hydraulic press (14).

2. The motor end cover punching machine that is convenient for loading and unloading according to claim 1 is characterized in that: The fixed structure comprises a limit plate (8) fixedly connected to the top of the workbench (1), a positioning block (6) slidably arranged on the limit plate (8) and distributed at equal angles, and a driving plate (9) rotatably arranged at the bottom of the workbench (1), wherein the limit plate (8) is provided with limit sliding grooves (801) distributed at equal angles, and the workbench (1) is provided with a through groove of the same size as the limit sliding groove (801), the bottom of the positioning block (6) is fixedly connected to a slider (601), the bottom of each slider (601) is fixedly connected to a slide rod, and the driving plate (9) is provided with driving grooves (901) distributed at equal angles for the slide rod to slide.

3. The motor end cover punching machine that is convenient for loading and unloading according to claim 2 is characterized in that: The driving assembly comprises a driven rod (902) fixedly connected to one side of the driving disc (9), a hydraulic press (14) arranged at the bottom of the workbench (1), and a rotating sleeve (903) fixed to the top of the driving disc (9), wherein the end of the hydraulic press (14) is fixedly connected to a connecting piece (1401), a traction pin is rotatably connected to the inner wall of the connecting piece (1401), the driven rod (902) is sleeved on the outer wall of the traction pin through a waist groove opened through the surface of the driven rod (902), and the top of the rotating sleeve (903) is rotatably arranged at the bottom of the workbench (1).

4. The motor end cover punching machine that is convenient for loading and unloading according to claim 2 is characterized in that: The outer wall of the positioning block (6) and the inner wall of the gripper of the pick-and-place robot (2) are both provided with flexible rubber sleeves.

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