阅读说明：本技术 一种电机铁芯的冲片方法 (Punching method of motor iron core ) 是由 程静丽 于 2021-09-22 设计创作，主要内容包括：本发明属于电机制造领域,尤其是涉及一种电机铁芯的冲片方法,其电机定子冲片的方法对电机定子冲片过程中还具体涉及到一种电机定子冲片的装置,该一种电机铁芯的冲片的装置包括支撑架,支撑架为T形,支撑架的柱体端固定设有顶梁,顶梁上设有冲压机构,冲压机构内设有吸附毛刺的吸尘机构,支撑架的底座上设有转动机构,打磨带转动可以对冲孔进行打磨,将冲片过程中产生的毛刺进行打磨,冲好后活塞轴复位,过程中打磨带可以对变形的孔进行纠正,通过该方法机装置可以有效解决冲片打磨毛刺的问题,且还可以防止打磨毛刺时铁片变形。(The invention belongs to the field of motor manufacturing, and particularly relates to a motor core punching method, and a motor stator punching device in the process of punching a motor stator by using the motor stator punching method.)

1. A punching method of a motor iron core is characterized in that: the punching method of the motor stator also specifically relates to a device for punching the motor stator, and the device for punching the motor stator comprises a support frame (10), wherein the support frame (10) is T-shaped, a top beam (20) is fixedly arranged at the cylinder end of the support frame (10), a punching mechanism (90) is arranged on the top beam (20), a dust suction mechanism (92) for adsorbing burrs is arranged in the punching mechanism (90), and a rotating mechanism (91) is arranged on a base of the support frame (10).

2. The punching method of the motor iron core according to claim 1, characterized in that: the punching mechanism (90) comprises a cylinder wall (21) embedded on the top beam (20), the cylinder wall (21) is located on one side of a cylinder body of the support frame (10), the cylinder wall (21) is close to a piston rod (22) embedded in the front of the support frame (10) in the base direction, a connecting plate (23) is fixedly arranged on the side far away from the top beam (20) on the piston rod (22), a grinding motor (24) is embedded in the middle of the connecting plate (23), a grinding shaft (26) is arranged on the grinding motor (24) in a rotating mode, a support cylinder (25) is fixedly arranged on the grinding shaft (26), a central grinding belt (28) used for grinding burrs is sleeved on the support cylinder (25), and a central punching plate (27) used for punching is fixedly arranged on the grinding shaft (26) far away from the grinding motor (24).

3. The punching method of the motor iron core according to claim 2, characterized in that: stamping mechanism (90) still includes inlay pneumatic groove (19) of establishing on back timber (20), pneumatic groove (19) are located the opposite side of the cylinder of support frame (10), pneumatic groove (19) are gone up to be close to support frame (10) base direction inlays and is equipped with piston shaft (18), keep away from on piston shaft (18) back timber (20) side is fixed and is equipped with roof (38), roof (38) are close to the cylinder side internal fixation of support frame (10) is equipped with offset motor (39), offset motor (39) are close to keep away from back timber (20) side rotation and are equipped with motor shaft (42), the fixed cylinder (43) that is equipped with on offset motor (39), the fixed connecting axle (45) that is equipped with in intermediate position of roof (38), roof (38) are kept away from offset motor (39) side rotation is equipped with driven shaft (47), the driven shaft (47) is fixedly provided with a driven roller (48), the driven roller (48) and the roller (43) are jointly sleeved with a grinding belt (49) for grinding burrs, and the connecting shaft (45) is far away from the end of the piston shaft (18) is fixedly provided with an oval punching plate (50) for punching.

4. The punching method of the motor iron core according to claim 3, characterized in that: dust absorption mechanism (92) include be close to in roof (38) transmission chamber (40) that biasing motor (39) department set up, motor shaft (42) are located fixed driving gear (41) that are equipped with on transmission chamber (40) section, connecting axle (45) internal rotation is equipped with transmission shaft (46), transmission shaft (46) are close to piston shaft (18) end is rotated and is established on the inner wall of transmission chamber (40), fixed driven gear (44) that are equipped with on connecting axle (45), driven gear (44) with driving gear (41) meshing is connected, the centre in oval dash board (50) is close to connecting axle (45) department and is equipped with negative pressure chamber (70), transmission shaft (46) are close to oval dash board (50) rotate and establish oval dash board (50) go up and stretch into in negative pressure chamber (70).

5. The method for punching the motor iron core according to claim 4, wherein the method comprises the following steps: the dust collection mechanism (92) further comprises a driving bevel gear (71) fixedly arranged at the end, close to the elliptical punching plate (50), of the transmission shaft (46), two driven rods (73) are arranged in the negative pressure cavity (70) in a rotating mode relative to the transmission shaft (46), two ends of each driven rod (73) are respectively and fixedly provided with a driven bevel gear (72) and a fan blade (74), the fan blades (74) are far away from the transmission shaft (46) compared with the driving bevel gear (71), two industrial filter plates (75) are symmetrically and fixedly arranged on the side walls, located in the directions of the two fan blades (74), of the negative pressure cavity (70) relative to the transmission shaft (46), two air channels (69) and two air cavities (68) are symmetrically arranged in the elliptical punching plate (50) relative to the negative pressure cavity (70), and each air channel (69) communicates the corresponding air cavity (68) with the negative pressure cavity (70), every wind chamber (68) head all communicates externally through the through-hole that is used for absorbing the burr, oval dash board (50) are kept away from transmission shaft (46) end inlays burr fill (51) that are equipped with the collection burr, every wind channel (69) are close to industry filter plate (75) end all is equipped with the through-hole of collecting the burr.

6. The punching method of the motor iron core according to claim 3, characterized in that: slewing mechanism (91) include the base is close to piston shaft (18) side and is equipped with conversion chamber (11) and the logical chamber (17) that runs through of opening orientation back timber (20), lead to chamber (17) and compare in conversion chamber (11) are closer to the cylinder of support frame (10), conversion chamber (11) are kept away from it is equipped with kicking block (16) to slide in back timber (20), fixed kicking block (15) of being equipped with on kicking block (16), the embedded rotating electrical machines (14) that are equipped with of kicking block (15), rotating electrical machines (14) are close to back timber (20) side rotation is equipped with pivot (13), the fixed electromagnetism iron piece (12) that is equipped with on pivot (13), be close to in the base of support frame (10) conversion chamber (11) department is equipped with button spring (56), button spring (56) compare in conversion chamber (11) are farther away from back timber (20), the push block (16) is close to a transmission rod (53) hinged to the end of the button spring (56), the other end of the transmission rod (53) is hinged to a button rod (54), the transmission rod (53) is close to the button rod (54) and hinged to the side wall of the button spring (56), the button rod (54) is arranged in the button spring (56) in a sliding mode, the button spring (56) is connected to the inner wall of the button spring (56) through a moving groove (55), the button rod (54) is far away from the transmission rod (53) side and penetrates through the button spring (56) to extend into the through cavity (17) to serve as a trigger switch of the rotating motor (14).

7. The method for punching the motor iron core according to claim 6, wherein the method comprises the following steps: the rotating mechanism (91) further comprises a punching sheet groove (33) which is arranged on the side, close to the piston rod (22), of the base of the support frame (10), the opening of the base of the support frame (10) faces the piston rod (22), the side, far away from the support block (15), of the punching sheet groove (33) penetrates through the support frame (10), a pressing plate (65) is arranged on the inner wall of the punching sheet groove (33) in a sliding mode, the pressing plate (65) is connected to the inner wall of the punching sheet groove (33) through a pressing plate spring (67), a linkage cavity (62) and a rope hole (58) are further arranged in the base of the support frame (10) and close to the punching sheet groove (33), the linkage cavity (62) is closer to the punching sheet groove (33) than the rope hole (58), a linkage rod (64) is arranged in the linkage rod (64) in a sliding mode, the linkage rod (64) is fixed to the pressing plate (65) end, and the pressing plate (65) is connected to the inner wall of the linkage cavity (62) through a reset spring (63), punching sheet groove (33) are close to be equipped with the opening on the lateral wall of tray (15) and deviate from push pedal groove (59) of tray (15), it is equipped with push pedal (61) to slide in push pedal groove (59), push pedal (61) are connected through push pedal spring (60) on the inner wall of push pedal groove (59), clamp plate (65) are passed through linkage rope (57) rope hole (58) are connected on push pedal (61).

8. The punching method of the motor iron core according to claim 1, characterized in that: the cylinder of support frame (10) is close to be equipped with transport chamber (29) in the base department, transport chamber (29) are kept away from inlay on the inner wall of back timber (20) and are equipped with transport motor (32), transport motor (32) are close to back timber (20) side rotation is equipped with transport axle (31), the fixed arm (35) that attracts that is equipped with on transport axle (31), attract arm (35) to run through one side of the cylinder of support frame (10), attract arm (35) to keep away from transport chamber (29) end to the base direction of support frame (10) slides and is equipped with and attracts slide bar (36), it is close to attract slide bar (36) the fixed sucking disc (37) that is equipped with of base end of support frame (10), the cylinder of support frame (10) is close to still be equipped with control terminal (34) that are used for intelligent control of back timber (20).

9. The method for punching the motor iron core according to the claims 1 to 8, characterized in that: the method comprises the following steps:

s1: punching edges, namely punching the edges of iron sheets on the electromagnet block (12) through a piston shaft (18) and an oval punching plate (50);

s2: polishing and adsorbing, namely polishing burrs of a punched hole by a polishing belt (49) in the process that the piston shaft (18) drives the oval punching plate (50) to reset, and adsorbing the polished burrs by air flow suction force generated by a fan blade (74);

s3: rotating, pressing the button rod (54) when the punched leftover materials fall off, so that the electromagnet block (12) drives the iron sheet to rotate, and punching the next position;

s4: the converting station is used for converting the iron sheet punched at the edge of the iron sheet to the side of the piston rod (22) through the suction of the sucking disc (37) and the rotation of the suction arm (35);

s5: polishing the central punching sheet, punching the center of the iron sheet through the piston rod (22) and the central punching plate (27), and polishing and punching;

s6: and (3) cleaning leftover materials, and pressing the pressing plate (65) after the leftover materials punched at the center fall into the punching sheet groove (33), so that the leftover materials are ejected out of the punching sheet groove (33) by the pushing plate (61).

Technical Field

The invention belongs to the field of motor manufacturing, and particularly relates to a punching method of a motor iron core.

Background

The iron core (magnetic core) plays a very important role in the whole motor, and is used for increasing the magnetic flux of the inductance coil to realize the maximum conversion of electromagnetic power. The motor core is generally formed by combining a stator and a rotor. The stator is usually as the part that does not rotate, and the rotor is embedded at the inside position of stator usually, and traditional iron core all has the punching press to make, left back is being extruded into an organic whole, and the requirement to the iron sheet is very high during the extrusion, can not have the burr usually, and traditional towards the piece method all is carrying out the burring after punching the hole, not only the time of wasting, and the paster is very thin, and downthehole burr is difficult to remove.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a motor iron core punching method which can remove burrs on a paster in the punching process.

In order to achieve the purpose, the invention adopts the following technical scheme:

the punching method of the motor iron core is characterized in that a motor stator punching method is adopted, and a motor stator punching device is further specifically adopted in the motor stator punching process.

Preferably, the punching mechanism comprises a cylinder wall embedded on the top beam, the cylinder wall is located on one side of a cylinder body of the support frame, a piston rod is embedded in the cylinder wall close to the front of the support frame base in the direction, a connecting plate is fixedly arranged on the piston rod and far away from the side of the top beam, a grinding motor is embedded in the middle of the connecting plate, a grinding shaft is rotatably arranged on the grinding motor, a support cylinder is fixedly arranged on the grinding shaft, a central grinding belt for grinding burrs is sleeved on the support cylinder, and a central punching plate for punching is fixedly arranged on the grinding shaft and far away from the grinding motor.

Preferably, the stamping mechanism further comprises a pneumatic groove embedded in the top beam, the pneumatic groove is positioned on the other side of the column body of the support frame, a piston shaft is embedded on the pneumatic groove in the direction close to the support frame base, a top plate is fixedly arranged on the piston shaft far away from the top beam, a bias motor is fixedly arranged in the column body side of the top plate close to the support frame, a motor shaft is rotatably arranged on the side of the bias motor close to the top beam, a roller is fixedly arranged on the bias motor, a connecting shaft is fixedly arranged in the middle of the top plate, a driven shaft is arranged on the top plate far away from the offset motor in a rotating way, a driven roller is fixedly arranged on the driven shaft, the driven roller and the roller are jointly sleeved with a polishing belt for polishing burrs, and the connecting shaft is far away from the end of the piston shaft and fixedly provided with an oval punching plate for punching.

Preferably, dust absorption mechanism includes be close to in the roof the transmission chamber that biasing motor department set up, the motor shaft is located the fixed driving gear that is equipped with in the transmission chamber section, the connecting axle internal rotation is equipped with the transmission shaft, the transmission shaft is close to the piston axle head rotates and establishes on the inner wall in transmission chamber, the fixed driven gear that is equipped with on the connecting axle, driven gear with driving gear meshing is connected, the centre in the oval dashes the board is close to connecting axle department and is equipped with the negative pressure chamber, the transmission shaft is close to oval dashes the board and rotates and establish oval dashes on the board and stretch into the negative pressure intracavity.

Preferably, the dust suction mechanism also comprises a driving bevel gear fixedly arranged at the end of the transmission shaft close to the elliptical punching plate, two driven rods are rotatably arranged in the negative pressure cavity relative to the transmission shaft, a driven bevel gear and a fan blade are respectively and fixedly arranged at the two ends of each driven rod, the fan blades are far away from the transmission shaft compared with the driving bevel gear, two industrial filter plates are symmetrically and fixedly arranged on the side walls of the negative pressure cavity in the directions of the two fan blades and around the transmission shaft, two air ducts and two air chambers are symmetrically arranged in the oval punching plate around the negative pressure chamber, each air duct is communicated with the corresponding air chamber and the negative pressure chamber, the head of each air chamber is communicated with the outside through a through hole for absorbing burrs, the oval punching plate is far away from a burr hopper for collecting burrs is embedded at the end of the transmission shaft, and each air channel is close to the industrial filter plate end and is provided with a through hole for collecting burrs.

Preferably, the rotating mechanism comprises a conversion cavity with an opening facing the top beam and a through cavity which penetrates through the conversion cavity, the through cavity is closer to the cylinder of the support frame than the conversion cavity, the conversion cavity is far away from the top beam, a top block is slidably arranged in the top beam, a support block is fixedly arranged on the top block, a rotating motor is embedded in the support block, the rotating motor is close to the top beam side and rotatably provided with a rotating shaft, an electromagnet block is fixedly arranged on the rotating shaft, a button spring is arranged in the base of the support frame and close to the conversion cavity, the button spring is further away from the top beam than the conversion cavity, the top block is close to the end of the button spring, a transmission rod is hinged to the end of the button spring, a button rod is hinged to the other end of the transmission rod, the transmission rod is close to the button rod and hinged to the side wall of the button spring, and the button rod is slidably arranged in the button spring, the button spring is connected on the inner wall of the button spring through the motion groove, and the button rod is far away from the transmission rod side and penetrates through the button spring to extend into the through cavity to serve as a trigger switch of the rotating motor.

Preferably, the rotating mechanism further comprises a punching sheet groove with an opening facing the piston rod and arranged on the base of the support frame close to the piston rod side, the punching sheet groove is far away from the support frame and penetrates through the support frame on the support frame side, a pressing plate is slidably arranged on the inner wall of the punching sheet groove and is connected to the inner wall of the punching sheet groove through a pressing plate spring, a linkage cavity and a rope hole are further arranged in the base of the support frame close to the punching sheet groove, the linkage cavity is closer to the punching sheet groove than the rope hole, a linkage rod is slidably arranged in the linkage rod and is fixed on the pressing plate close to the pressing plate end, the pressing plate is connected to the inner wall of the linkage cavity through a reset spring, a pushing sheet groove with an opening deviating from the support block is arranged on the side wall of the punching sheet groove close to the support block, a pushing sheet is slidably arranged in the pushing sheet groove, and is connected to the inner wall of the pushing sheet groove through a pushing sheet spring, the pressing plate penetrates through the rope hole through the linkage rope to be connected to the push plate.

Preferably, the cylinder of support frame is close to be equipped with the transport chamber in the base department, the transport chamber is kept away from inlay on the inner wall of back timber and be equipped with the transport motor, the transport motor is close to the roof beam side is rotated and is equipped with the transport axle, the epaxial fixed suction arm that is equipped with of transport, the suction arm runs through one side of the cylinder of support frame, the suction arm is kept away from transport chamber end to the base direction of support frame slides and is equipped with the suction slide bar, the suction slide bar is close to the base end of support frame is fixed and is equipped with the sucking disc, the cylinder of support frame is close to still being equipped with of back timber is used for intelligent control's control terminal.

Preferably, the method comprises the following steps:

s1: punching edges, namely punching edges of iron sheets on the electromagnet blocks through the piston shaft and the oval punching plate;

s2: polishing and adsorbing, namely polishing burrs of the punched holes by a polishing belt in the process of driving the oval punching plate to reset by the piston shaft, and adsorbing the polished burrs by air flow suction force generated by the fan blades;

s3: rotating, pressing the button rod when the punched leftover material falls off, so that the electromagnet block drives the iron sheet to rotate, and punching the next position;

s4: the converting station converts the iron sheet punched at the edge of the iron sheet to the side of the piston rod through the suction of the sucking disc and the rotation of the suction arm;

s5: polishing the central punching sheet, punching the center of the iron sheet through the piston rod and the central punching plate, and polishing and punching;

s6: the leftover materials are cleaned, the leftover materials punched in the center drop into the punching sheet groove, and then the pressing plate is pressed, so that the leftover materials are ejected out of the punching sheet groove by the pushing plate.

Has the advantages that: the polishing belt rotates to polish punched holes, burrs generated in the punching process are polished, the piston shaft resets after punching is completed, and the polishing belt can correct deformed holes in the process.

The air current in the negative pressure intracavity can adsorb the burr after polishing in fighting, carries out centralized processing, reduces the dust in the workshop.

The second vent groove can utilize the wind that the dust exhaust intracavity filtered, blows off the sand and dust on street lamp surface, slows down the wearing and tearing on street lamp surface, and through can spraying the water in the guiding gutter on street lamp surface with the form of water smoke, prevents that street lamp surface from forming great drop of water, is difficult to weather by the wind in the second vent groove.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic diagram of a structural implementation of the present invention;

FIG. 3 is a schematic view of FIG. 2 taken along line A-A;

FIG. 4 is an enlarged view of the point B in FIG. 2;

FIG. 5 is an enlarged view of FIG. 2 at C;

FIG. 6 is an enlarged view of FIG. 2 at D;

FIG. 7 is a schematic view taken along the line E-E in FIG. 4;

FIG. 8 is an enlarged view of F in FIG. 4;

fig. 9 is a schematic view in the direction of G-G in fig. 6.

In the figures, a support frame 10; a conversion chamber 11; an electromagnet block 12; a rotating shaft 13; a rotating electric machine 14; a support block 15; a top block 16; a through cavity 17; a piston shaft 18; a pneumatic groove 19; a top beam 20; a cylinder wall 21; a piston rod 22; a connecting plate 23; grinding the motor 24; a support cylinder 25; grinding the shaft 26; a center punch 27; a center sanding belt 28; a transfer chamber 29; a carrying shaft 31; a carrying motor 32; a sheet punching groove 33; a control terminal 34; a suction arm 35; attracting the slide bar 36; a suction cup 37; a top plate 38; a bias motor 39; a transmission chamber 40; a drive gear 41; a motor shaft 42; a drum 43; a driven gear 44; a connecting shaft 45; a drive shaft 46; a driven shaft 47; a driven drum 48; a sanding belt 49; an elliptical punch plate 50; a burr bucket 51; a movable groove 52; a transmission rod 53; a button lever 54; a moving groove 55; a button spring 56; a link rope 57; a cord hole 58; a pusher slot 59; a pusher spring 60; a push plate 61; a linkage chamber 62; a return spring 63; a linkage 64; a platen 65; a platen spring 67; a wind chamber 68; an air duct 69; a negative pressure chamber 70; the drive bevel gear 71; a driven bevel gear 72; a driven lever 73; fan blades 74; an industrial filter plate 75; a punching mechanism 90; a rotation mechanism 91; and a dust suction mechanism 92.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

With reference to fig. 2, a method for punching a motor core, and a device for punching a motor stator in a motor stator punching process by the method for punching the motor stator also specifically relate to the device for punching the motor stator, the device for punching the motor core comprises a support frame 10, the support frame 10 is T-shaped, a top beam 20 is fixedly arranged at a cylinder end of the support frame 10, a punching mechanism 90 is arranged on the top beam 20, a dust suction mechanism 92 for adsorbing burrs is arranged in the punching mechanism 90, and a rotating mechanism 91 is arranged on a base of the support frame 10.

Further, combine fig. 2, punching press mechanism 90 includes that the cylinder wall 21 of establishing inlays on back timber 20, cylinder wall 21 is located one side of the cylinder of support frame 10, cylinder wall 21 inlays to be equipped with piston rod 22 before being close to support frame 10 base direction, keep away from the fixed connecting plate 23 that is equipped with of back timber 20 side on the piston rod 22, the intermediate position of connecting plate 23 inlays and is equipped with grinding motor 24, it is equipped with grinding shaft 26 to rotate on the grinding motor 24, the fixed support section of thick bamboo 25 that is equipped with on the grinding shaft 26, the cover is equipped with the central zone 28 of polishing that is used for polishing the burr on the support section of thick bamboo 25, grinding shaft 26 keeps away from that grinding motor 24 end is fixed and is equipped with the central punching plate 27 that is used for punching the piece.

Further, with reference to fig. 4, the stamping mechanism 90 further includes a pneumatic groove 19 embedded on the top beam 20, the pneumatic groove 19 is located on the other side of the cylinder of the support frame 10, a piston shaft 18 is embedded on the pneumatic groove 19 in a direction close to the base of the support frame 10, a top plate 38 is fixedly arranged on the piston shaft 18 far away from the top beam 20, a bias motor 39 is fixedly arranged on the top plate 38 close to the cylinder side of the support frame 10, a motor shaft 42 is rotatably arranged on the bias motor 39 close to the side far away from the top beam 20, a roller 43 is fixedly arranged on the bias motor 39, a connecting shaft 45 is fixedly arranged at the middle position of the top plate 38, a driven shaft 47 is rotatably arranged on the top plate 38 far away from the bias motor 39, a driven roller 48 is fixedly arranged on the driven shaft 47, a polishing belt 49 for polishing burrs is jointly sleeved on the driven roller 48 and the roller 43, and an oval stamping plate 50 for stamping is fixedly arranged on the connecting shaft 45 far away from the piston shaft 18.

Further, with reference to fig. 4, the dust suction mechanism 92 includes a transmission cavity 40 disposed in the top plate 38 and close to the offset motor 39, a driving gear 41 is fixedly disposed on a section of the motor shaft 42 located in the transmission cavity 40, a transmission shaft 46 is rotatably disposed in the connection shaft 45, the end of the transmission shaft 46 close to the piston shaft 18 is rotatably disposed on an inner wall of the transmission cavity 40, a driven gear 44 is fixedly disposed on the connection shaft 45, the driven gear 44 is engaged with the driving gear 41, a negative pressure cavity 70 is disposed in the middle of the elliptical punching plate 50 and close to the connection shaft 45, and the transmission shaft 46 is rotatably disposed on the elliptical punching plate 50 and extends into the negative pressure cavity 70 and close to the elliptical punching plate 50.

Further, with reference to fig. 8, the dust suction mechanism 92 further includes a driving bevel gear 71 fixedly disposed at a position where the transmission shaft 46 is close to the elliptical punch plate 50, two driven rods 73 are disposed in the negative pressure cavity 70 in relation to the rotation of the transmission shaft 46, a driven bevel gear 72 and a fan blade 74 are respectively fixedly disposed at two ends of each driven rod 73, the fan blade 74 is far away from the transmission shaft 46 in comparison with the driving bevel gear 71, two industrial filter plates 75 are symmetrically and fixedly disposed on side walls of the negative pressure cavity 70 in the direction of the two fan blades 74 in relation to the transmission shaft 46, two air ducts 69 and two air chambers 68 are symmetrically disposed in the elliptical punch plate 50 in relation to the negative pressure cavity 70, each air duct 69 communicates the corresponding air chamber 68 and the negative pressure cavity 70, the head of each air chamber 68 communicates with the outside through a through hole for absorbing burrs, a burr hopper 51 for collecting burrs is embedded at a position where the elliptical punch plate 50 is far away from the transmission shaft 46, and a through hole for collecting burrs is disposed at a position where each air duct 69 is close to the industrial filter plate 75.

Further, with reference to fig. 2 and 5, the rotating mechanism 91 includes a conversion cavity 11 and a through cavity 17, the base is provided with an opening facing the top beam 20 on a side close to the piston shaft 18, the through cavity 17 is closer to the column of the support frame 10 than the conversion cavity 11, the conversion cavity 11 is provided with a top block 16 sliding away from the top beam 20, the top block 16 is fixedly provided with a support block 15, the support block 15 is embedded with a rotating motor 14, the rotating motor 14 is provided with a rotating shaft 13 rotating close to the side of the top beam 20, the rotating shaft 13 is fixedly provided with an electromagnet block 12, a button spring 56 is provided in the base of the support frame 10 close to the conversion cavity 11, the button spring 56 is farther away from the top beam 20 than the conversion cavity 11, the top block 16 is hinged to a transmission rod 53 close to the button spring 56, the other end of the transmission rod 53 is hinged to a button rod 54, the transmission rod 53 is hinged to a side wall of the button spring 56, the button rod 54 is slidably provided in the button spring 56, a button spring 56 is connected to the inner wall of the button spring 56 via a movement groove 55, and a button rod 54 projects through the button spring 56 into the through-chamber 17 on the side remote from the transmission rod 53 as a trigger switch for the rotary motor 14.

Further, with reference to fig. 6, the rotating mechanism 91 further includes a punching sheet groove 33 with an opening facing the piston rod 22, the side of the base of the support frame 10 close to the piston rod 22 is provided with a punching sheet groove 33, the side of the punching sheet groove 33 far from the support block 15 penetrates through the support frame 10, a pressing plate 65 is slidably arranged on the inner wall of the punching sheet groove 33, the pressing plate 65 is connected to the inner wall of the punching sheet groove 33 through a pressing plate spring 67, a linkage cavity 62 and a rope hole 58 are further arranged in the base of the support frame 10 close to the punching sheet groove 33, the linkage cavity 62 is closer to the punching sheet groove 33 than the rope hole 58, a linkage rod 64 is slidably arranged in the linkage rod 64, the linkage rod 64 is fixed on the pressing plate 65 close to the pressing plate 65 end, the pressing plate 65 is connected to the inner wall of the linkage cavity 62 through a return spring 63, a pushing plate groove 59 with an opening facing away from the support block 15 is arranged on the side wall of the punching sheet groove 33, a pushing plate groove 59 is slidably provided with a 61, the pushing plate 61 is connected to the inner wall of the pushing plate groove 59 through a pushing plate spring 60, the pressing plate 65 is connected to the push plate 61 through the rope hole 58 by the link rope 57.

Further, with reference to fig. 2 and 3, a carrying cavity 29 is provided in a position where the column of the support frame 10 is close to the base, a carrying motor 32 is embedded on an inner wall of the carrying cavity 29 far from the top beam 20, a carrying shaft 31 is rotatably provided on a side of the carrying motor 32 close to the top beam 20, an attraction arm 35 is fixedly provided on the carrying shaft 31, the attraction arm 35 penetrates through one side of the column of the support frame 10, an attraction slide rod 36 is slidably provided at an end of the attraction arm 35 far from the carrying cavity 29 toward the base of the support frame 10, a suction cup 37 is fixedly provided at a base end of the attraction slide rod 36 close to the support frame 10, and a control terminal 34 for intelligent control is further provided at a position where the column of the support frame 10 is close to the top beam 20.

Further, the method comprises the following steps:

s1: punching edges, namely punching edges of iron sheets on the electromagnet block 12 through the piston shaft 18 and the oval punching plate 50;

s2: polishing and adsorbing, namely polishing burrs of the punched hole by a polishing belt 49 in the process of driving the oval punching plate 50 to reset by the piston shaft 18, and adsorbing the polished burrs by air flow suction force generated by the fan blades 74;

s3: rotating, pressing the button rod 54 when the punched leftover material falls off, so that the electromagnet block 12 drives the iron sheet to rotate, and punching the next position;

s4: a switching station for switching the iron sheet to the side of the piston rod 22 by sucking the iron sheet punched at the edge of the iron sheet through the sucking disc 37 and rotating the sucking arm 35;

s5: polishing the central punching sheet, punching the center of the iron sheet through the piston rod 22 and the central punching plate 27, and polishing and punching;

s6: the leftover materials are cleaned, the leftover materials punched in the center drop into the punching sheet groove 33, and then the pressing plate 65 is pressed, so that the leftover materials are ejected out of the punching sheet groove 33 by the pushing plate 61.

Initial state: the pressure plate spring 67 and the return spring 63 are in a normal state, the push plate spring 60 is in a compressed state, the button spring 56 is in a normal state, and the piston shaft 18 and the piston rod 22 are both in a contracted state.

The working principle is as follows: placing an iron sheet to be processed on a station on the chassis of the support frame 10 close to the side of the piston shaft 18, starting the piston shaft 18 and the offset motor 39, punching the iron sheet by the oval punching plate 50, driving the grinding belt 49 to rotate by the offset motor 39 through the motor shaft 42 and the roller 43, grinding punched holes, grinding burrs generated in the punching process, resetting the piston shaft 18 after punching, correcting deformed holes by the grinding belt 49 in the process, repealing to slide the button rod 54 after leftover materials fall through the through cavity 17, sliding the top block 16 towards the top beam 20 through the transmission rod 53 by the button rod 54, driving the electromagnet block 12 to surge by the top block 16, simultaneously rotating the motor 14 to drive the iron sheet to rotate for a certain angle to punch a next hole, driving the transmission shaft 46 to rotate through the driving gear 41 and the driven gear 44 in the rotation process of the offset motor 39, driving the fan blades 74 to rotate through the driving bevel gear 71 and the driven rod 73 to generate air flow, adsorbing the polished burrs into a burr hopper 51 through an air duct 69 and an air cavity 68 for centralized processing, circulating the process until the edge of the iron sheet is completely punched, enabling a control terminal 34 to enable an attraction sliding rod 36 to slide out of an attraction arm 35, enabling an iron sheet to be sucked up through a sucking disc 37, enabling a carrying motor 32 to rotate by one hundred eighty degrees, placing the iron sheet on a station at the side of a piston rod 22, starting the piston rod 22 and a polishing motor 24 to enable a central punching plate 27 to punch the center of the iron sheet, enabling the polishing motor 24 to drive a central polishing belt 28 to rotate through a supporting cylinder 25 to polish punching holes, enabling the leftover materials to fall into a punching sheet groove 33, simultaneously pressing a pressing plate 65, pressing a linkage rod 64 by the pressing plate 65 to enable the linkage rod 64 to slide out of a push plate 61, enabling a push plate spring 60 to extend when the linkage rod 64 slides out, ejecting the leftover materials in the punching sheet groove 33 through the push plate 61 to prevent the leftover materials in the punching sheet groove 33 from being accumulated, but also prevent leftover materials from falling into the lower side of the device and being difficult to clean.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.