Motor end cover punching machine facilitating feeding and discharging

Abstract

The invention discloses a motor end cover punching machine facilitating feeding and discharging, and relates to the technical field of motor shell machining, the motor end cover punching machine comprises a workbench, a taking and placing robot arranged on one side of the workbench and used for taking and placing a motor end cover, a punch driving end arranged on the workbench and a spray head arranged on one side of the punch driving end; the punching head is rotationally arranged at the bottom of the driving end of the punch, the expanding structure is arranged in the punching head and used for expanding the punching head, and the fixing structure is arranged on the workbench and used for flexibly fixing the inner wall of the inner side of the motor end cover. By means of the threaded punch, the problems that scraps are prone to entering a threaded gap along with water flow, the scraps remain on the surface of the punch, punching is disturbed in the follow-up punching process, burrs are generated at a hole opening, and the quality, assembly and service life of an end cover are affected are solved; and when the motor end cover is fixed by the existing external surrounding clamp, the clamping force on the thin material end cover is easy to exceed the bearing range, so that the thin material end cover is deformed, and the assembly and the performance are influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor housing processing, and specifically to a punching machine for motor end covers that facilitates loading and unloading. Background Technique

[0002] A punching machine for motor end covers is a special equipment for processing motor end covers, mainly used for punching various holes (such as bolt holes, ventilation holes, positioning holes, etc.) on the motor end covers to meet the requirements of motor assembly and heat dissipation. This equipment drives the punch through mechanical or hydraulic means to stamp and form the motor end cover material, featuring high efficiency, precision, and high automation.

[0003] For example, a punching machine for motor end covers with the publication number CN117900324B, by setting a stamping component and a punching component, enables the radial punch to punch the radial surface of the motor end cover workpiece while the axial punching of the motor end cover workpiece is carried out, improving the punching accuracy, preventing the offset of the hole position, and at the same time preventing the workpiece from deforming due to secondary clamping and punching, improving the punching efficiency, and preventing the parts from deforming and being damaged during punching. However, there are still some deficiencies in the existing punching machines for motor end covers.

[0004] In the existing punching machines for motor end covers, threaded punching is required at the center of the motor end cover. The threaded round hole of the motor end cover is used to install set screws to fix the rotor shaft or bearing and prevent axial movement. After each punching, the punch of the existing punching machine for motor end covers will be contaminated with debris. Most of the existing methods for cleaning the debris on the punch are to spray water on the punch during the punching process (spraying water can also play a role in reducing the temperature of the punch to extend the service life of the punch). Due to the design of the external thread of the existing threaded punch, the debris is likely to enter the threaded gap on the other side of the punch along with the water flow, resulting in debris still remaining on the surface of the punch. When the punch with debris continues to perform subsequent punching operations, these debris will interfere with the punching process, causing burrs to appear at the hole opening of the punched end cover. The existence of burrs not only affects the appearance quality of the motor end cover but also may have an adverse impact on its assembly performance and service life, thereby reducing the overall quality of the motor end cover after punching.

[0005] In addition, during the punching operation of the motor end cover, to ensure the accuracy and stability of the punching position, the motor end cover needs to be effectively fixed. Currently, most of the existing clamping of the motor end cover uses an outer surrounding fixture to fix the motor end cover. However, during the process of providing clamping force to fix the motor end cover, for some motor end covers with relatively thin materials, the clamping force applied by the outer surrounding fixture may exceed its bearing range, resulting in deformation of the motor end cover during clamping. This deformation not only affects the dimensional accuracy and shape accuracy of the motor end cover but also may damage its internal structure, thereby reducing the overall quality of the motor end cover and affecting its subsequent assembly and use performance.

[0006] In view of the above problems, it is urgent to innovate and design on the basis of the original motor end cover punching machine. Summary of the Invention

[0007] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a motor end cover punching machine that is convenient for loading and unloading, so as to solve the problems proposed in the above background technology. The existence of burrs not only affects the appearance quality of the motor end cover, but may also have an adverse impact 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 fixture may exceed the bearing range of the motor end cover, resulting in deformation of the motor end cover during the clamping process. This deformation will not only affect 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 object, the present invention provides the following technical solution: A motor end cover punching machine that is convenient for loading and unloading, including a workbench, a pick-and-place robot arranged on one side of the workbench for picking and placing the motor end cover, a punch driving end arranged on the workbench, and a nozzle arranged on one side of the punch driving end. It also includes a punching head rotatably arranged at the bottom of the punch driving end, an expanding structure arranged inside the punching head for expanding the punching head, a fixing structure arranged on the workbench for flexibly fixing the inner side wall of the motor end cover, a driving component 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 for resetting and fixing the structure based on the extrusion of the punching head. A cavity for the expanding structure to expand is provided on the inner wall of the punching head. A connecting end is rotatably arranged at the bottom of the punch driving end. The punching head is specifically divided into four petals. The top of the punching head is fixedly connected with connecting rods in an array, and all the connecting rods are rotatably arranged at the bottom of the connecting end.

[0009] Preferably, the expanding structure includes a pull rod arranged inside the connecting end and a leading head rotatably arranged at one end of the bottom of the pull rod. The bottom of the leading head is rotatably provided with traction rods distributed at equal angles. The end of the traction rod is fixedly connected with a connecting ring. An adapter is sleeved on the connecting ring, and the end of the adapter is fixedly connected to the inner wall of the punching head.

[0010] Preferably, a threaded rod is fixedly connected to the top of the pull rod. The radius of the threaded rod is the same as that of the pull rod. A limit block is fixedly connected to the top of the threaded rod. The radius of the limit block is greater than that of the threaded rod. A chute for the upward contraction of the pull rod is formed in the punch driving end, and a rotating head is rotatably arranged inside the chute. The rotating head is electrically connected to the punch driving end. A threaded groove is formed inside the rotating head, and the threaded groove is engaged with the threaded rod.

[0011] Preferably, the fixing structure includes a limit disk fixedly connected to the top of the workbench, positioning blocks slidably arranged on the limit disk and distributed at equal angles, and a driving disk rotatably arranged at the bottom of the workbench. Limit chutes distributed at equal angles are formed on the limit disk. Through grooves with the same size as the limit chutes are formed on the workbench. A slider is fixedly connected to the bottom of the positioning block. Slide rods are fixedly connected to the bottoms of the sliders. Driving grooves distributed at equal angles for the slide rods to slide are formed on the driving disk.

[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. A connecting piece is fixedly connected to the end of the hydraulic press. 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-shaped groove formed through its surface. The top of the rotating sleeve is rotatably arranged at the bottom of the workbench.

[0013] Preferably, the power-off structure includes support slide rods distributed in an array at the bottom of the workbench, a bottom plate fixedly connected to the bottoms of the four support slide rods, a downward pressure transmission plate slidably arranged on the four support slide rods, 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-receiving rod is fixedly connected to the center of the top of the downward pressure transmission plate. Four springs are arranged between the downward pressure transmission plate and the bottom plate, and the four springs are respectively sleeved on the four support slide rods.

[0014] Preferably, one side of the downward pressure transmission plate is electrically connected to an adapter plate, and an input end head is arranged at the top of the adapter plate. An output end head is fixedly connected to one side of the extension plate. The input end head is in contact with the output end head. A transmission line is electrically connected to one side of the receiving sensor. One end of the transmission line is electrically connected to the hydraulic press.

[0015] Preferably, flexible rubber sleeves are arranged on the outer walls of the positioning blocks and the inner walls of the jaws of the picking and placing robot.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. After the punching operation is completed, the rotating head inside the driving end of the punch will start to rotate in the reverse direction. As the rotating head rotates in the reverse 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 outwards, causing the punching head to expand under the drive of the traction rods. As the traction rods expand outwards, the acting 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 expands. After the punching head expands, the internal space increases. In this way, when the nozzle flushes the punching head later, 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 to be punched is placed on the closed positioning block by the clamping of the picking and placing robot. Subsequently, the hydraulic press is started, and the hydraulic rod at the end of the hydraulic press begins to extend outwards. The connecting piece at the end of the hydraulic rod drives the driven rod to move, so that the driven rod drives the driving disc to rotate. The driving disc rotates at the bottom of the workbench through the rotating sleeve, causing the sliding rod to be driven by the driving groove to drive the slider to move towards one end of the limiting sliding groove, so that the positioning block abuts against the inner wall of the motor end cover. By the way of abutting against the inner wall of the motor end cover from the inside, it can avoid the clamping deformation of the motor end cover caused by the external clamping force of the traditional outer surrounding fixture. Secondly, the flexible rubber sleeve arranged on the outer wall of the positioning block and the inner wall of the clamping jaw of the picking and placing robot 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. 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 It is a state 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 the power-off structure of the present invention.

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

[0023] Figure 5 It 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 expansion structure of the punching head of the present invention.

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

[0026] Figure 8 is Figure 3Schematic diagram of the enlarged structure at position 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, compression rod; 8, limiting disk; 801, limiting chute; 9, driving disk; 901, driving groove; 902, driven rod; 903, rotating sleeve; 10, bottom plate; 11, supporting slide bar; 12, downward pressing transmission plate; 13, spring; 14, hydraulic press; 1401, connecting piece; 15, extension plate; 16, output end; 17, input end; 18, transmission line; 19, receiving sensor; 20, connection end; 21, pull rod; 22, leading head; 23, threaded rod; 24, limiting block; 25, connecting piece; 26, connecting ring; 27, towing rod. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a motor end cover punching machine convenient for loading and unloading, including a workbench 1, a pick-and-place robot 2 arranged on one side of the workbench 1 for picking and placing 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. It also includes a punching head 5 rotatably arranged at the bottom of the punch driving end 3, an expanding 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 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 for resetting and fixing the structure based on the extrusion of the punching head 5. A cavity for the expanding structure to expand is provided on the inner wall of the punching head 5. A connection end 20 is rotatably arranged at the bottom of the punch driving end 3. The punching head 5 is specifically divided into four petals. The top of the punching head 5 is fixedly connected with connecting rods 501 in an array, and all the connecting rods 501 are rotatably arranged at the bottom of the connection end 20.

[0030] In this embodiment, the motor end cover to be punched is clamped by the pick-and-place robot 2 and placed on the closed fixing structure. Subsequently, the driving component is started, and the driving component drives the fixing structure to rotate. After rotation, the fixing structure expands and firmly abuts against the inner wall of the motor end cover. Then, the punch driving end 3 is started. The punch driving end 3 drives the expansion structure to lift through the rotating head arranged inside it, so that the punching head 5 in the expanded state closes. Subsequently, the rotary punching operation begins. During the punching operation, after the punching head 5 punches, it contacts the power-off structure, causing the power-off structure to press down and cut off the power supply to the driving component and input a reset signal through the receiving sensor 19, so that the fixing structure closes again. After closing, the fixing structure releases the fixation of the motor end cover. Subsequently, it is convenient for the pick-and-place robot 2 to remove the punched motor end cover. In addition, during the punching process of the punching head 5, the nozzle 4 continuously sprays water to cool the punching head 5 and the motor end cover. When the punching of the punching head 5 is completed, the rotating head drives the expansion structure to move downward, so that the expansion structure expands the punching head 5, thereby preventing debris from flowing into the thread gap on the other side of the punching head 5 under the push of the water flow during the flushing of the punching head 5 by the nozzle 4.

[0031] The expansion structure includes a pull rod 21 arranged inside the connection 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 with a connection ring 26. A connecting piece 25 is sleeved on the connection ring 26, and 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 with a threaded rod 23. The radius of the threaded rod 23 is the same as that of the pull rod 21. The top of the threaded rod 23 is fixedly connected with a limiting block 24. The radius of the limiting block 24 is larger than that of the threaded rod 23. A chute for the upward contraction of the pull rod 21 is opened in the punch driving end 3, and a rotating head is rotatably arranged inside the chute. The rotating head is electrically connected to the punch driving end 3. A threaded groove is opened inside the rotating head, and the threaded groove meshes with the threaded rod 23.

[0033] In this embodiment, when punching is required, the driving end 3 of the punch drives the rotating head to rotate, causing the rotating head to drive the threaded rod 23 to move upward. While the threaded rod 23 is moving, the pull rod 21 pulls the leading head 22 upward. The traction rod 27 at the bottom of the leading head 22 drives the connecting member 25 to close inward through the connecting ring 26, causing the connecting member 25 to drive the four-piece punching head 5 to close into a complete punch shape for punching the motor end cover. When it is necessary to clean the debris on the punching head 5 after punching, the rotating head rotates reversely to drive the threaded rod 23 to move downward. In addition, the radius of the limit block 24 is wider than that of the threaded rod 23, so that the limit block 24 serves as the limit for the downward movement of the threaded rod 23. After the threaded rod 23 moves downward, the threaded rod 23 pushes the pull rod 21 to move downward, and the leading head 22 at the bottom of the pull rod 21 drives the four traction rods 27 to expand around (the connection between the traction rod 27 and the leading head 22 is a universal ball connection), causing the punching head 5 to expand under the drive of the traction rod 27, avoiding the situation where debris flows into the threaded gap on the other side of the punching head 5 under the push of water flow during the flushing of the punching head 5 by the nozzle 4. (It should be noted that the punch driving end 3 serves as the main control unit. The rotating head is arranged inside the punch driving end 3 and is driven to rotate by the internal driving motor of the punch driving end 3. The connecting end 20 is arranged at the bottom of the punch driving end 3 and is directly driven to rotate by the punch driving end 3. When the driving motor of the punch driving end 3 receives a signal, it first drives the rotating head to rotate, causing the four-piece punching head 5 to close, and then the punch driving end 3 drives the connecting end 20 to rotate.)

[0034] The fixing structure includes a limit disk 8 fixedly connected to the top of the workbench 1, positioning blocks 6 slidably arranged on the limit disk 8 at equal angles, and a driving disk 9 rotatably arranged at the bottom of the workbench 1. The limit disk 8 is provided with limit sliding grooves 801 distributed at equal angles, and the workbench 1 is provided with through grooves of the same size as the limit sliding grooves 801. The bottom of the positioning block 6 is fixedly connected with a slider 601, and the bottoms of the sliders 601 are all fixedly connected with sliding rods. The driving disk 9 is provided with driving grooves 901 distributed at equal angles for the sliding rods to slide.

[0035] In this embodiment, when the motor end cover is placed on the limit disk 8, the positioning block 6 is driven by the driving component. When the slider 601 at its bottom moves in the driving groove 901 through the sliding rod, the slider 601 moves along the limit sliding groove 801 and moves towards one end of the limit sliding groove 801. Subsequently, one side of the positioning block 6 abuts 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. One end of the hydraulic press 14 is fixedly connected with 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-shaped groove formed through its surface. The top of the rotating sleeve 903 is rotatably arranged 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, by starting the hydraulic press 14, the hydraulic rod at the end of the hydraulic press 14 starts to extend outwards. 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 rotational connection point between the connecting piece 1401 at its end and the end of the driven rod 902 serves as a fulcrum. The acting force of the hydraulic rod in the extension direction causes the driven rod 902 to move around this fulcrum. As the hydraulic rod continues to extend and the acting 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 finally 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 driving groove 901 to slide the slider 601 towards one end of the limit sliding groove 801, so that the positioning block 6 abuts against the inner wall of the motor end cover and fixes it for subsequent punching work.

[0038] The power-off structure includes support slide rods 11 arranged in an array at the bottom of the workbench 1, a bottom plate 10 fixedly connected to the bottoms of the four support slide rods 11, a downward pressure transmission plate 12 slidably arranged on the four support slide rods 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-receiving rod 7 is fixedly connected to the center of the top of the downward pressure transmission plate 12. Four springs 13 are arranged between the downward pressure transmission plate 12 and the bottom plate 10, and the four springs 13 are respectively sleeved on the four support slide rods 11.

[0039] One side of the downward pressure transmission plate 12 is electrically connected with an adapter plate, and an input end head 17 is arranged at the top of the adapter plate. An output end head 16 is fixedly connected to one side of the extension plate 15. The input end head 17 is in contact with the output end head 16. One side of the receiving sensor 19 is electrically connected with a transmission line 18, and one end of the transmission line 18 is electrically connected with 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 causes the input terminal 17 on the connecting plate on one side of the downward pressure transmission plate 12 to release contact with the output terminal 16. When the input terminal 17 is released from contact with the output terminal 16, the output terminal 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, causing the hydraulic press 14 to drive the driving disk 9 to rotate in the opposite direction, so that the positioning block 6 closes and contracts inward again, and releases 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 to move upward through the driving connection end 20, so as to facilitate 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 terminal 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 arranged 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. Feeding and Fixing Punching Stage: The motor end cover to be punched is clamped by the picking and placing robot 2 and placed on the closed positioning block 6. Subsequently, the hydraulic press 14 is started, and the hydraulic rod at the end of the hydraulic press 14 begins to extend outwards. 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 disc 9 to rotate. The driving disc 9 rotates at the bottom of the workbench 1 through the rotating sleeve 903, causing the sliding rod to be driven by the sliding groove 901 to drive the slider 601 to move towards one end of the limit sliding groove 801, so that the positioning block 6 abuts against the inner wall of the motor end cover. Subsequently, the punch driving end 3 is started to rotate the rotating head, so that the rotating head drives the threaded rod 23 to move upwards. While the threaded rod 23 is moving, the pull rod 21 pulls the leading head 22 upwards. The traction rod 27 at the bottom of the leading head 22 drives the connecting piece 25 to close inwards 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. Resetting Stage: When the punching head 5 contacts the pressure-receiving rod 7 at the top of the downward pressure transmission plate 12 after punching and applies a downward pressure to the pressure-receiving rod 7, subsequently, the pressure-receiving rod 7 drives the downward pressure transmission plate 12 to squeeze the spring 13 downwards, and the input end head 17 on the connecting plate on one side of the downward pressure transmission plate 12 is disengaged from the output end head 16. When the input end head 17 is disengaged from the output end head 16, the output end head 16 sends a reset signal to the receiving sensor 19. Subsequently, the receiving sensor 19 sends a contraction signal to the hydraulic press 14 through the transmission line 18, causing the hydraulic press 14 to drive the driving disc 9 to rotate reversely, so that the positioning block 6 closes and contracts inwards again and releases the fixation of the motor end cover. Subsequently, the picking and placing robot 2 can remove the motor end cover whose fixation has been released. During the process of the compressed spring 13 gradually restoring, it will simultaneously push the downward pressure transmission plate 12 to move upwards and reset until the spring 13 is completely restored, realizing the re-contact of the input end head 17 and the output end head 16 for the next operation.

[0046] III. Punch Expanding and Cleaning Stage: During the punching operation of the punching head 5 on the motor end cover, the nozzle 4 continuously sprays water to cool down the punching head 5 and the motor end cover being punched. (It should be noted that since a large amount of heat is generated during the punching operation, continuous water spraying can effectively prevent the punching head 5 from being damaged due to overheating, and at the same time, it can also avoid quality problems such as deformation of the motor end cover 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 driving end 3 of the punch starts to rotate reversely. With the reverse rotation of the rotating head, 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 will drive the pull rod 21 to move downward together. The leading head 22 at the bottom of the pull rod 21 drives the four traction rods 27 to expand outwards (the connection between the traction rod 27 and the leading head 22 is a universal ball connection), causing the punching head 5 to expand under the drive of the traction rod 27. As the traction rod 27 expands outwards, the acting force will be transmitted to the punching head 5 through the connecting ring 26 and the connecting piece 25, so that the punching head 5 that was originally in a closed state expands. After the punching head 5 expands, its internal space increases. In this way, when the nozzle 4 flushes the punching head 5 subsequently, the 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 since the threaded gap of the punching head 5 is a part where debris is likely to accumulate. If debris enters it, it will not only affect the normal use of the punching head 5, but may also cause the punching head 5 to malfunction during subsequent operations. After the punching head 5 expands, the debris can be washed away more smoothly by the water flow, thus facilitating a thorough flushing and cleaning of the punching head 5 and 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 foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A punching machine for motor end covers that facilitates loading and unloading, comprising a workbench (1), a pick-and-place robot (2) arranged on one side of the workbench (1) for picking and placing motor end covers, a punch driving end (3) arranged on the workbench (1), and a spray head (4) arranged on one side of the punch driving end (3), characterized in that: It 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) for resetting the fixing structure based on being squeezed by the punching head (5), wherein 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 petals, 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).

2. The punching machine for motor end covers that facilitates loading and unloading according to claim 1, wherein: The expansion structure comprises a pull rod (21) arranged in the connection 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 ends of the traction rods (27) are fixedly connected to connecting rings (26); the connecting rings (26) are sleeved with connecting pieces (25); the ends of the connecting pieces (25) are fixedly connected to the inner wall of the punching head (5).

3. The punching machine for the motor end cover facilitating loading and unloading according to claim 2, wherein: 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), a slide groove is provided in the punch drive end (3) for the pull rod (21) to retract upward, and a rotating head is rotatably provided inside the slide groove, the rotating head is electrically connected to the punch drive end (3), a thread groove is provided inside the rotating head, and the thread groove is meshed with the threaded rod (23).

4. A punching machine for motor end covers that facilitates loading and unloading, 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), the limit plate (8) is provided with limit sliding grooves (801) distributed at equal angles, 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 with a sliding block (601), the bottom of each of the sliding blocks (601) is fixedly connected with a sliding rod, and the driving plate (9) is provided with driving grooves (901) distributed at equal angles for sliding the sliding rod.

5. A punching machine for motor end covers that facilitates loading and unloading, characterized in that: The driving assembly includes a driven rod (902) fixedly connected to one side of a driving disk (9), a hydraulic press (14) arranged at the bottom of a 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 with 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-shaped groove formed in its surface. The top of the rotating sleeve (903) is rotatably arranged at the bottom of the workbench (1).

6. The punching machine for the motor end cover facilitating loading and unloading according to claim 1, wherein: The power-off structure includes support sliding rods (11) arranged in an array at the bottom of the workbench (1), a bottom plate (10) fixedly connected to the bottoms of the four support sliding rods (11), a downward pressure transmission plate (12) slidably arranged on the four support sliding rods (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 compression rod (7) is fixedly connected to the center of the top of the downward pressure transmission plate (12). Four springs (13) are arranged between the downward pressure transmission plate (12) and the bottom plate (10), and the four springs (13) are respectively sleeved on the four support sliding rods (11).

7. A punching machine for motor end covers that facilitates loading and unloading, characterized in that: One side of the downward pressure transmission plate (12) is electrically connected with an adapter plate, and an input end head (17) is arranged at the top of the adapter plate. An output end head (16) is fixedly connected to one side of the extension plate (15). The input end head (17) is in contact with the output end head (16). One side of the receiving sensor (19) is electrically connected with a transmission line (18), and one end of the transmission line (18) is electrically connected with the hydraulic press (14).

8. The punching machine for motor end covers facilitating loading and unloading according to claim 4, characterized in that: Flexible rubber sleeves are provided on the outer wall of the positioning block (6) and the inner wall of the gripper of the picking and placing robot (2).

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