Soft ferrite magnetic core blank cutting device

Abstract

The invention discloses a soft ferrite magnetic core blank cutting device which comprises a driving motor and frame plates, a reciprocating device is arranged between the frame plates, the driving motor penetrates through the frame plates to be in transmission connection with the reciprocating device, the reciprocating device is connected with the two ends of a cutting rope, the two ends of the reciprocating device are provided with guide wheels, and the guide wheels are rotationally connected with the frame plates. A tensioning device is arranged at the front end of the reciprocating device, the tensioning device is rotationally connected with the frame plate, a magnetic core blank is arranged at the front end of the tensioning device, the magnetic core blank is connected with a three-jaw chuck in a clamped mode, and the three-jaw chuck is connected with a two-dimensional translation platform. And the tensioning device continuously conducts tensioning and feeding cutting, the cleaning device can continuously follow the tensioning device to adsorb the magnetic powder cut from the cutting position, and the problems that the cutting rope is abraded due to secondary pollution of the magnetic powder, and the cutting efficiency is reduced are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic core cutting equipment, and specifically relates to a cutting device for soft ferrite magnetic core blanks. Background Art

[0002] In the patent application with the publication number CN212192265U, a cutting device for magnetic core processing is disclosed, which includes a base and a motor. A reciprocating lead screw is installed in the base by bearings, and the left side of the reciprocating lead screw is fixedly connected to the motor. A collar is movably sleeved on the outer side of the reciprocating lead screw, and the upper end of the collar is fixedly connected to a top plate. The top plate movably penetrates through the middle of a limiting member, and the limiting member is fixedly installed on the left side of the upper end surface of the base. A bracket and a limiting strip are connected to the upper end surface of the base, and the limiting strip is located between the base and the bracket. A storage cavity is fixedly penetrated through the left surface of the bracket. The inner rod is connected to the cutting member through a spring. The circular gear is fixedly installed at the end of the installation rod. This cutting device for magnetic core processing can automatically feed and automatically push the magnetic core, making the automation degree of magnetic core cutting higher, and can automatically cut the magnetic core with equal length, effectively improving the cutting efficiency of the magnetic core.

[0003] In the prior art including the above patents, at present, the cutting technology of soft ferrite magnetic core blanks still mainly focuses on linear cutting, but the wrapping cutting technology has shown significant advantages and technical feasibility. There is no device specifically for wrapping and cutting soft ferrite magnetic core blanks. At the same time, due to the magnetic property of the soft ferrite material itself, the following technical bottlenecks will occur during the cutting process: the magnetic powder adsorption effect. The sub-micron magnetic powder generated by cutting will adhere to the surface of the cutting wire due to magnetism, resulting in an increase in the effective cutting diameter, causing dynamic chip removal obstacles. The residual magnetic powder will exacerbate the wear of the cutting rope and lead to a decrease in cutting efficiency, and cause the loss of stability in tension control. Therefore, a cutting device for soft ferrite magnetic core blanks is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a cutting device for soft ferrite magnetic core blanks to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A cutting device for soft ferrite magnetic core blanks includes a driving motor and a frame plate. A reciprocating device is arranged between the frame plates. The driving motor passes through the frame plate and is in transmission connection with the reciprocating device. Both ends of the reciprocating device are connected to a cutting rope. Guide wheels are arranged at both ends of the reciprocating device, and the guide wheels are rotatably connected to the frame plate. A tensioning device is arranged at the front end of the reciprocating device, and the tensioning device is rotatably connected to the frame plate. A magnetic core blank is arranged at the front end of the tensioning device, and the magnetic core blank is clamped with a three-jaw chuck. The three-jaw chuck is connected to a two-dimensional translation platform.

[0006] Further, the reciprocating device includes a misaligned toothed plate, the misaligned toothed plate is provided with two toothed rods arranged in parallel but with staggered tooth positions, and between the two toothed rods is engaged with an incomplete gear, the incomplete gear is in transmission connection with the output end of the driving motor, and the misaligned toothed plate is symmetrically provided with a winding structure.

[0007] Further, the winding structure includes symmetrically arranged fixed blocks, the two fixed blocks are connected to both sides of the misaligned toothed plate, one of the fixed blocks is rotatably connected to one end of a rotating rod, the outer circle of the rotating rod is slidably connected to the inner circle of a roller, the roller is connected to a cutting rope, a first hexagonal hole is opened at the other end of the rotating rod, a reset elastic member is placed in the first hexagonal hole, the first hexagonal hole is slidably connected to one end of a hexagonal rod, the other end of the hexagonal rod is snap-connected to a second hexagonal hole opened in the other fixed block, a third hexagonal hole is opened at the other end of the hexagonal rod, a circular through groove is opened at the bottom of the second hexagonal hole, and the cutting rope passes through a guide wheel and enters a tensioning device.

[0008] Further, the tensioning device includes an electric push rod, the output end of the electric push rod is electrically connected to a pressure sensor, the pressure sensor is connected to an L-shaped push plate, the upper surface and the lower surface of the push plate are respectively connected to one end of a toothed rod, the toothed rod is engaged with a transmission gear, the transmission gear is respectively in transmission connection with the middle position of a first U-shaped frame, both ends of the first U-shaped frame are connected to the inner circle of a ball bearing, the outer circle of the ball bearing is wound with a cutting rope, the cutting rope surrounds a magnetic core blank, and one end of the first U-shaped frame close to the magnetic core blank is connected to a cleaning device.

[0009] Further, the cleaning device includes a second U-shaped frame, both ends of the second U-shaped frame are rotatably connected to one end of the first U-shaped frame, one side of the second U-shaped frame is connected to a top plate, the top plate is in contact with one end of an inner ring pipe, the other end of the inner ring pipe is slidably connected to the inner circle of an outer ring pipe, a pressure elastic member is arranged in the inner circle of the outer ring pipe, the outer ring pipe is connected to the first U-shaped frame, and the second U-shaped frame is connected to symmetrically arranged strong magnets.

[0010] Further, a protective mold is arranged outside the strong magnets, a pulley is arranged between the strong magnets, and the pulley is rotatably connected to the second U-shaped frame.

[0011] Further, the frame plate includes symmetrically arranged vertical plates, between the vertical plates is connected to the end of a support frame, one side of the support frame away from the vertical plate is threadedly connected to a screw rod, one end of the screw rod is connected to a nozzle, the nozzle is communicated with a hose, the nozzle is in contact with the magnetic core blank, the nozzle is connected to one end of symmetrically arranged stabilizing rods, and the stabilizing rods are slidably connected to the support frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are: (1) It is rigidly connected to the servo-driven horizontal translation platform through a three-jaw chuck to achieve the positioning of the magnetic core blank and the precise control of the cutting depth. The reciprocating device drives the cutting rope to reciprocate, thereby performing wrapped cutting on the magnetic core blank, thus improving the cutting efficiency. At the same time, it is continuously tensioned by the tensioning device, and the tensioning device can also continuously feed during the cutting state. Moreover, the cleaning device can continuously follow the tensioning device to adsorb the magnetic powder cut at the cutting position, effectively avoiding the problem of cutting rope wear caused by secondary pollution of magnetic powder, which leads to a decrease in cutting efficiency. Insert the special hex wrench into the third hexagon hole and apply axial pressure. After the hexagon rod is pressed, it pushes the elastic member to compress, so that the hexagon rod can be completely disengaged from the second hexagon hole. Rotating while maintaining the pressure state can perform adapted wrapped cutting on magnetic core blanks of different sizes, thus achieving rapid adjustment and reset. (2) The elastic member drives the inner ring tube to move. Through the top plate, it pushes the second U-shaped frame to accurately position the strong magnet to the cutting area. Its high-intensity magnetic field adsorbs the magnetic powder generated during cutting in real time, avoiding the cutting rope wear caused by secondary pollution, and ensuring the stability of cutting efficiency. By using a peelable protective film to cover the working surface of the strong magnet, after the magnetic powder is adsorbed to saturation, the attached magnetic powder can be removed at one time by tearing off the protective film, so that the magnetism of the magnet returns to the initial state. This design realizes the rapid recycling of the strong magnet and ensures that the magnetic adsorption intensity is continuously maintained in the cutting area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic bottom structural diagram of the present invention; Figure 3 is a schematic internal structural diagram of the present invention; Figure 4 is a schematic structural diagram of the reciprocating device in the present invention; Figure 5 is a schematic structural diagram of the fixed block in the present invention; Figure 6 is a schematic structural diagram of the reciprocating device in the present invention; Figure 7 is a schematic structural diagram of the cleaning device in the present invention; Figure 8 is a schematic structural diagram of the frame plate in the present invention; Figure 9 is Figure 8 the enlarged view at A in

[0014] In the figure: 1 - drive motor, 2 - mounting plate, 21 - vertical plate, 22 - support frame, 23 - screw rod, 24 - stabilizer bar, 25 - nozzle, 26 - hose, 3 - reciprocating device, 31 - offset tooth plate, 32 - incomplete gear, 33 - winding structure, 331 - fixing block, 332 - rotating rod, 333 - roller, 334 - reset elastic member, 335 - hexagonal rod, 4 - tensioning device, 41 - electric push rod, 42 - push plate, 43 - toothed rod, 44 - transmission gear, 45 - first U-shaped frame, 46 - ball bearing, 47 - cleaning device, 471 - second U-shaped frame, 472 - strong magnet, 473 - pulley, 474 - top plate, 475 - outer ring pipe, 476 - inner ring pipe, 48 - pressure sensor, 5 - three-jaw chuck, 6 - magnetic core blank, 7 - guide wheel. Detailed implementation mode

[0015] 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 work shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-9 , a technical solution provided by the present invention: a cutting device for soft ferrite magnetic core blanks, including a drive motor 1 and a mounting plate 2. A reciprocating device 3 is arranged between the mounting plates 2. The drive motor 1 passes through the mounting plate 2 and is in transmission connection with the reciprocating device 3. The reciprocating device 3 is connected to both ends of the cutting rope. The cutting rope is made of diamond particles and matrix alloy through a sintering process into a circular bead string, fixed on the steel wire rope at a specific interval. Guide wheels 7 are arranged at both ends of the reciprocating device 3. The guide wheels 7 are rotatably connected to the mounting plate 2. A tensioning device 4 is arranged at the front end of the reciprocating device 3. The tensioning device 4 is rotatably connected to the mounting plate 2. A magnetic core blank 6 is arranged at the front end of the tensioning device 4. The magnetic core blank 6 is clamped with a three-jaw chuck 5. The three-jaw chuck 5 is connected to a horizontal translation platform. By rigidly connecting the three-jaw chuck 5 with a servo-driven horizontal translation platform, the positioning of the magnetic core blank 6 and the precise control of the cutting depth are realized. The reciprocating device 3 drives the cutting rope to reciprocate, thereby performing a wrapped cutting on the magnetic core blank 6, thereby improving the cutting efficiency. And through continuous tensioning by the tensioning device 4, at the same time, the tensioning device 4 can also continuously feed during the cutting state. And the cleaning device 47 can continuously follow the tensioning device 4 to adsorb the magnetic powder cut at the cutting position, effectively avoiding the problem of cutting rope wear caused by secondary pollution of magnetic powder, resulting in a decrease in cutting efficiency.

[0017] The reciprocating device 3 includes a misaligned toothed plate 31, and the misaligned toothed plate 31 is provided with two toothed rods 43 that are arranged in parallel but have staggered tooth positions. Between the two toothed rods 43, there is an engagement with an incomplete gear 32, and the incomplete gear 32 is in transmission connection with the output end of the driving motor 1. The misaligned toothed plate 31 is symmetrically provided with a winding structure 33. The misaligned toothed plate 31 adopts two toothed rods 43 that are arranged in parallel but have staggered tooth positions, and they are alternately engaged with the incomplete gear 32. When the driving motor 1 drives the incomplete gear 32 to rotate, the incomplete gear 32 only engages with one of the toothed rods 43 to push the misaligned toothed plate 31 to move unidirectionally. When it switches to the other toothed rod 43, it moves in the reverse direction, forming a reciprocating motion trajectory. This design avoids the dead point problem of the traditional crank and connecting rod mechanism, and the switching of the motion direction is more accurate.

[0018] The winding structure 33 includes symmetrically arranged fixing blocks 331. The two fixing blocks 331 are connected to both sides of the misaligned toothed plate 31. One of the fixing blocks 331 is rotatably connected to one end of a rotating rod 332. The outer ring of the rotating rod 332 is slidably connected to the inner ring of a roller 333. The roller 333 is connected to a cutting rope. The other end of the rotating rod 332 is provided with a first hexagonal hole, and a reset elastic member 334 is placed in the first hexagonal hole. The first hexagonal hole is slidably connected to one end of a hexagonal rod 335. The other end of the hexagonal rod 335 is snap-fitted into a second hexagonal hole opened in the other fixing block 331. The other end of the hexagonal rod 335 is provided with a third hexagonal hole, and a circular through groove is opened at the bottom of the second hexagonal hole. The cutting rope passes through a guide wheel 7 and enters a tensioning device 4. Insert a special hexagonal wrench into the third hexagonal hole and apply an axial pressure. After the hexagonal rod 335 is pressed, it pushes the reset elastic member 334 to compress, so that the hexagonal rod 335 can be completely disengaged from the second hexagonal hole. Rotating while maintaining the pressure state can perform adaptive wrapping cutting on magnetic core blanks 6 of different sizes, thereby achieving rapid adjustment and reset.

[0019] The tensioning device 4 includes an electric push rod 41. The output end of the electric push rod 41 is electrically connected to a pressure sensor 48. The pressure sensor 48 is connected to an L-shaped push plate 42. The upper surface and the lower surface of the push plate 42 are respectively connected to one end of a toothed rod 43. The toothed rod 43 is engaged with a transmission gear 44. The transmission gear 44 is respectively in transmission connection with the middle position of a first U-shaped frame 45. Both ends of the first U-shaped frame 45 are connected to the inner ring of a ball bearing 46. The outer ring of the ball bearing 46 is wound with a cutting rope. The cutting rope surrounds the magnetic core blank 6. One end of the first U-shaped frame 45 close to the magnetic core blank 6 is connected to a cleaning device 47. By pushing the push plate 42 with the electric push rod 41, the toothed rods 43 on the upper surface and the lower surface are driven to move, so that the upper transmission gear 44 rotates forward and the lower transmission gear 44 rotates in reverse, thereby driving the cutting rope to feed and cut the magnetic core blank 6. At the same time, the pressure sensor 48 monitors the tension in real time. When it detects that the load exceeds the set threshold, the control system immediately triggers a protective retraction to ensure that the cutting rope will not break.

[0020] The cleaning device 47 includes a second U-shaped frame 471. Both ends of the second U-shaped frame 471 are rotatably connected to one end of the first U-shaped frame 45. One side of the second U-shaped frame 471 is connected to the top plate 474. The top plate 474 contacts one end of the inner ring pipe 476. The other end of the inner ring pipe 476 is slidably connected to the inner circle of the outer ring pipe 475. A pressure elastic member is arranged on the inner circle of the outer ring pipe 475. The outer ring pipe 475 is connected to the first U-shaped frame 45. The second U-shaped frame 471 is connected to symmetrically arranged strong magnets 472. The pressure elastic member drives the inner ring pipe 476 to move. By pushing the second U-shaped frame 471 through the top plate 474, the strong magnets 472 are accurately positioned in the cutting area. Its high-intensity magnetic field adsorbs the magnetic powder generated by cutting in real time, avoiding the wear of the cutting rope caused by secondary pollution and ensuring the stability of the cutting efficiency.

[0021] A protective mold is arranged outside the strong magnets 472. A pulley 473 is arranged between the strong magnets 472. The pulley 473 is rotatably connected to the second U-shaped frame 471. By covering the working surface of the strong magnets 472 with a peelable protective film, after the magnetic powder is saturated in adsorption, the attached magnetic powder can be removed at one time by tearing off the protective film, so that the magnetic force of the magnet returns to the initial state. This design realizes the rapid recycling of the strong magnets 472 and ensures that the magnetic adsorption intensity in the cutting area is continuously maintained.

[0022] The frame plate 2 includes symmetrically arranged vertical plates 21. Between the vertical plates 21 is connected to the end of the support frame 22. One side of the support frame 22 away from the vertical plate 21 is threadedly connected to the screw 23. One end of the screw 23 is connected to the nozzle 25. The nozzle 25 is communicated with the hose 26. The nozzle 25 contacts the magnetic core blank 6. One end of the nozzle 25 is connected to symmetrically arranged stabilizing rods 24. The stabilizing rods 24 are slidably connected to the support frame 22. The nozzle 25 is connected to the coolant supply source through the hose 26. The rotation of the screw 23 drives the nozzle 25 to move, so that it approaches the cutting position of the magnetic core blank 6, thereby ensuring that the maximum amount of coolant enters the cut.

[0023] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A cutting device for soft ferrite magnetic core blanks, comprising a driving motor (1) and a mounting plate (2), characterized in that: A reciprocating device (3) is arranged between the shelf plates (2). The driving motor (1) passes through the shelf plates (2) and is in transmission connection with the reciprocating device (3). Both ends of the cutting rope are connected to the reciprocating device (3). Guide wheels (7) are arranged at both ends of the reciprocating device (3). The guide wheels (7) are rotatably connected to the shelf plates (2). A tensioning device (4) is arranged at the front end of the reciprocating device (3). The tensioning device (4) is rotatably connected to the shelf plates (2). A magnetic core blank (6) is arranged at the front end of the tensioning device (4). The magnetic core blank (6) is clamped with a three-jaw chuck (5). The three-jaw chuck (5) is connected to a two-dimensional translation platform.

2. The cutting device for a soft ferrite magnetic core blank according to claim 1, wherein: The reciprocating device (3) includes a misaligned tooth plate (31). The misaligned tooth plate (31) is provided with two tooth bars (43) arranged in parallel but with staggered tooth positions. An incomplete gear (32) is meshed between the two tooth bars (43). The incomplete gear (32) is in transmission connection with the output end of the driving motor (1). The misaligned tooth plate (31) is symmetrically provided with a winding structure (33).

3. The cutting device for a soft ferrite magnetic core blank according to claim 2, characterized in that: The winding structure (33) includes symmetrically arranged fixed blocks (331). The two fixed blocks (331) are connected to both sides of the misaligned tooth plate (31). One of the fixed blocks (331) is rotatably connected to one end of a rotating rod (332). The outer ring of the rotating rod (332) is slidably connected to the inner ring of a roller (333). The roller (333) is connected to the cutting rope. A first hexagonal hole is opened at the other end of the rotating rod (332). A reset elastic member (334) is placed in the first hexagonal hole. The first hexagonal hole is slidably connected to one end of a hexagonal rod (335). The other end of the hexagonal rod (335) is clamped with a second hexagonal hole opened in the other fixed block (331). A third hexagonal hole is opened at the other end of the hexagonal rod (335). A circular through groove is opened at the bottom of the second hexagonal hole. The cutting rope passes through the guide wheel (7) and enters the tensioning device (4).

4. A cutting device for soft ferrite magnetic core blanks according to claim 3, characterized in that: The tensioning device (4) includes an electric push rod (41). The output end of the electric push rod (41) is electrically connected to a pressure sensor (48). The pressure sensor (48) is connected to an L-shaped push plate (42). The upper surface and the lower surface of the push plate (42) are respectively connected to one end of a tooth bar (43). The tooth bar (43) is meshed with a transmission gear (44). The transmission gear (44) is respectively in transmission connection with the middle position of a first U-shaped frame (45). Both ends of the first U-shaped frame (45) are connected to the inner ring of a ball bearing (46). The outer ring of the ball bearing (46) is wound with the cutting rope. The cutting rope surrounds the magnetic core blank (6). One end of the first U-shaped frame (45) close to the magnetic core blank (6) is connected to a cleaning device (47).

5. A cutting device for soft ferrite magnetic core blanks according to claim 4, characterized in that: The cleaning device (47) includes a second U-shaped frame (471). Both ends of the second U-shaped frame (471) are rotatably connected to one end of the first U-shaped frame (45). One side of the second U-shaped frame (471) is connected to a top plate (474). The top plate (474) is in contact with one end of an inner ring pipe (476). The other end of the inner ring pipe (476) is slidably connected to the inner circle of an outer ring pipe (475). A pressure elastic member is provided on the inner circle of the outer ring pipe (475). The outer ring pipe (475) is connected to the first U-shaped frame (45). The second U-shaped frame (471) is connected to symmetrically arranged strong magnets (472).

6. The cutting device for soft ferrite magnetic core blanks according to claim 5, characterized in that: A protection mold is provided outside the strong magnets (472). A pulley (473) is arranged between the strong magnets (472). The pulley (473) is rotatably connected to the second U-shaped frame (471).

7. A cutting device for soft ferrite magnetic core blanks according to claim 1, characterized in that: The frame plate (2) includes symmetrically arranged vertical plates (21). The ends of a support frame (22) are connected between the vertical plates (21). One side of the support frame (22) away from the vertical plates (21) is threadedly connected to a screw rod (23). One end of the screw rod (23) is connected to a spray head (25). The spray head (25) is communicated with a hose (26). The spray head (25) is in contact with a magnetic core blank (6). One end of the spray head (25) is connected to symmetrically arranged stabilizing rods (24). The stabilizing rods (24) are slidably connected to the support frame (22).

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