A magnetic field pressure forming device

Abstract

The present invention discloses a magnetic field pressure forming device, which includes a frame, a powder adding structure, a powder weighing structure, a powder feeding structure, and an extrusion forming structure arranged on the frame; the powder adding structure includes a powder dropping pipe and a powder feeding channel for receiving and conveying magnetic powder, and the powder outlet end of the powder feeding channel is located above the powder weighing structure; the powder weighing structure includes a weighing unit and a weighing hopper rotatably arranged on the weighing unit, the weighing hopper is located below the powder feeding channel, and the weighing hopper rotates to transfer the magnetic powder to the powder feeding structure; the powder feeding structure includes a powder injection mechanism and a driving module for driving the powder injection mechanism to move, the driving module drives the powder injection mechanism to move above the extrusion forming structure, and the powder injection mechanism injects the magnetic powder into the extrusion forming structure; the extrusion forming structure includes a forming die, an upper pressing die and a lower pressing die arranged above and below the forming die, an extrusion cavity is formed in the forming die, and the upper pressing die and the lower pressing die are respectively inserted into both ends of the extrusion cavity to extrude and form the magnetic powder.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment, and particularly relates to a magnetic field pressure forming device. Background Art

[0002] A magnetic field press is a new type of processing equipment that uses the combined action of magnetic field force and mechanical force to achieve material forming under non-fixed deformation conditions. Its working principle is to use a coil to generate a magnetic field to pressurize and form metal or non-metal materials. During the processing, by applying a strong magnetic field around the material, an isotropic or anisotropic stress field is formed inside the material and pressed, thereby realizing the plastic deformation of the material and obtaining high-precision and high-strength formed parts.

[0003] Before the existing magnetic field press performs pressurizing and forming, multiple operation steps such as powder weighing and powder adding are required. However, these existing operations are carried out separately, requiring multiple transfers, and resulting in the scattering of magnetic powder during the transfer process, thus affecting the processing efficiency and the quality of the formed parts. Summary of the Invention

[0004] To solve the technical problems in the background art, the present invention proposes a magnetic field pressure forming device.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] A magnetic field pressure forming device includes a frame, a powder adding structure, a powder weighing structure, a powder feeding structure, and an extrusion forming structure arranged on the frame;

[0007] The powder adding structure includes a powder dropping tube for inputting magnetic powder and a powder feeding channel for receiving and conveying magnetic powder, and the powder output end of the powder feeding channel is located above the powder weighing structure;

[0008] The powder weighing structure includes a weighing unit for measuring the weight of magnetic powder and a weighing hopper rotatably arranged on the weighing unit. The weighing hopper is located below the powder feeding channel, and the weighing hopper rotates and transfers a fixed amount of magnetic powder to the powder feeding structure;

[0009] The powder feeding structure includes a powder injection mechanism for receiving the magnetic powder from the powder weighing structure and a driving module for driving the powder injection mechanism to move. The driving module drives the powder injection mechanism to move above the extrusion forming structure, and the powder injection mechanism injects a fixed amount of magnetic powder into the extrusion forming structure;

[0010] The extrusion forming structure includes a forming die, an upper pressing die arranged above the forming die, and a lower pressing die arranged below the forming die. An extrusion cavity for placing magnetic powder is formed in the forming die, and the upper pressing die and the lower pressing die are respectively placed into the extrusion cavity from above and below to extrude and form the magnetic powder.

[0011] Preferably, the powder injection mechanism includes a feeding frame for receiving magnetic powder, a first vibration part for driving the feeding frame to vibrate, and a feeding module arranged at the discharging end of the feeding frame. The feeding module includes a feeding head located below the discharging end of the feeding frame for receiving magnetic powder, a dredging cylinder located above the feeding head, and a descending cylinder for driving the feeding head to descend. The operating end of the dredging cylinder is placed inside the feeding head. Through the above improvements, the magnetic powder is weighed and dropped into the feeding frame. Subsequently, the driving module drives the entire powder injection mechanism to move above the molding die. Then, the first vibration part starts to vibrate, causing the magnetic powder to enter the feeding head from the feeding frame. Subsequently, the descending cylinder drives the feeding head to abut against the molding die, enabling the magnetic powder to enter the extrusion cavity. And during the falling process of the magnetic powder, the operating end of the dredging cylinder extends and retracts inside the feeding head, preventing the magnetic powder from clogging in the feeding head, enabling the magnetic powder to accurately enter the extrusion cavity, and preventing the magnetic powder from scattering outside.

[0012] Preferably, a descending plate is arranged on the operating end of the descending cylinder. The feeding head is arranged on the descending plate and partially extends downward from the descending plate. The descending cylinder drives the descending plate to descend so that the feeding head abuts against the top of the molding die. Through the above improvements, when the descending cylinder drives the descending plate, the feeding head abuts against the top of the molding die, connecting the molding die and the feeding head, enabling the magnetic powder to completely enter the extrusion cavity, and ensuring the accuracy during the magnetic powder injection process.

[0013] Preferably, an installation bracket is arranged on the first vibration part, and a spraying head for spraying a mold release agent is arranged on the installation bracket. Through the above improvements, the spraying head can spray the mold release agent into the extrusion cavity, making it easier to demold the molded part after molding.

[0014] Preferably, a second vibration part for driving it to vibrate is arranged at the bottom of the powder feeding channel, and a liftable screening gate is arranged inside the powder feeding channel. Through the above improvements, the fineness of the magnetic powder can be ensured by the screening gate, improving the molding quality.

[0015] Preferably, a rotating seat is rotatably provided on the weighing unit, and a lifting cylinder is provided on the side of the rotating seat. A lifting rod is provided on the operating end of the lifting cylinder. The lifting rod is located below the rotating seat. The lifting cylinder drives the lifting rod to rise, so that the weighing hopper rotates to transfer magnetic powder. An elastic element is provided on the rotating seat. One end of the elastic element abuts against the rotating seat, and the other end abuts against the weighing unit, so that the weighing hopper has a movement tendency away from the feeding direction. Through the above improvement, when the magnetic powder on the weighing hopper reaches a certain weight, the weighing unit will send a signal to the lifting cylinder. The lifting cylinder drives the lifting rod to rise and pulls the rotating seat to rotate, so that the weighing hopper rotates accordingly and transfers a fixed amount of magnetic powder to the powder feeding structure. After the powder feeding is completed, under the action of the elastic element, the rotating seat returns to the initial position and can perform the next round of powder receiving work.

[0016] Preferably, the molding die includes a housing and a coil provided inside the housing. The coil includes a plurality of metal wires arranged in parallel and evenly spaced. The inner side and the outer side of the metal wires are respectively located on the same circumferential surface. The housing includes an outer sleeve and upper and lower end caps provided on both sides of the outer sleeve. A cooling sleeve is sleeved outside the coil. A cooling cavity is formed between the cooling sleeve and the outer sleeve. A water inlet pipe and a water outlet pipe communicating with the cooling cavity are provided on the outer sleeve. Through the above improvement, the coil and the die are integrated, and the molding occurs in the middle of the coil. The die can be replaced at any time, and the coil can also be replaced at any time. An extrusion cavity for placing magnetic powder is formed in the molding die. The coil generates a magnetic field parallel to the pressing direction, so that the magnetic powder is arranged. Then, the upper pressing die and the lower pressing die are respectively placed into the extrusion cavity from above and below to extrude and form the magnetic powder. And it has a smaller volume compared with the traditional molding die, and the cooling cavity can be used to cool the molding die.

[0017] Preferably, the lower pressing die includes a lifting module, a rotating module provided on the operating end of the lifting module, a rotating plate provided on the operating end of the rotating module, and an extrusion head for extruding magnetic powder is provided at one end of the rotating plate, and a cleaning module for cleaning the extrusion cavity is provided at the other end. The cleaning module includes a driving unit and a cleaning head connected to the output end of the driving unit. Through the above improvement, after each molding part is completed, the rotating module drives the rotating plate to rotate, so that the cleaning module is arranged upward. And as the lifting module rises, the cleaning head of the cleaning module is placed into the extrusion cavity. Subsequently, the driving unit drives the cleaning head to rotate to adhere to the magnetic powder in the extrusion cavity, so that the magnetic powder in the extrusion cavity will adhere to the cleaning head, ensuring that there is no residual magnetic powder in the extrusion cavity and avoiding the influence on the extrusion molding effect due to long-term accumulation.

[0018] Preferably, a powder collecting seat for placing the cleaning head is formed on the frame, and a powder collecting box for collecting magnetic powder is arranged at the bottom of the powder collecting seat. Through the above improvements, after cleaning the extrusion cavity, the rotating module drives the rotating plate to rotate, so that the cleaning module is arranged downward, and the cleaning head enters the powder collecting seat. Subsequently, the driving unit drives the cleaning head to rotate. The cleaning head collides and rubs with the inside of the powder collecting seat, so that the magnetic powder on the cleaning head is thrown out and falls into the powder collecting seat, and the magnetic powder will enter the powder collecting box along the powder collecting seat for collection.

[0019] Preferably, a cleaning channel for placing the cleaning head is formed on the powder collecting seat. A plurality of cleaning bumps are arranged at intervals in the powder collecting seat, and a powder suction channel is formed between the cleaning bumps. An adsorption block for adsorbing magnetic powder is slidably arranged in the powder suction channel. Through the above improvements, during the rotation of the cleaning head, part of it will enter the cleaning channel. As the cleaning head rotates, the magnetic powder will fall into the cleaning channel and be adsorbed on the adsorption block, thereby realizing the collection of magnetic powder.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] In the present invention, the magnetic powder is automatically fed first by the powder feeding structure, then the magnetic powder is weighed by the powder weighing structure, and the weighed magnetic powder is transported and poured into the extrusion molding structure by the powder feeding structure. Through the extrusion molding structure, the magnetic powder is extruded and molded, integrating multiple steps of powder feeding, weighing, powder feeding, powder pouring, and extrusion molding on one device, reducing the transfer of materials and avoiding the dropping of magnetic powder during the transfer process, which can not only improve the processing efficiency but also improve the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0023] Figure 2 is a schematic structural diagram of the powder adding structure of the present invention;

[0024] Figure 3 is a schematic structural diagram of the first screening plate of the present invention;

[0025] Figure 4 is a schematic structural diagram of the second screening plate of the present invention;

[0026] Figure 5 is a schematic structural diagram of the powder weighing structure of the present invention;

[0027] Figure 6 is a schematic structural diagram of the powder feeding structure of the present invention;

[0028] Figure 7 is a schematic structural diagram of the injection module of the present invention;

[0029] Figure 8 The structural schematic diagram of the second embodiment of the present invention;

[0030] Figure 9 The structural schematic diagram of the extrusion molding structure of the present invention;

[0031] Figure 10 The cross-sectional view of the molding die of the present invention;

[0032] Figure 11 The structural schematic diagram of the overall lower pressing die in the third embodiment of the present invention;

[0033] Figure 12 The structural schematic diagram of the lifting module and the rotating module of the lower pressing die in the third embodiment of the present invention;

[0034] Figure 13 The structural schematic diagram of the powder collecting seat in the lower pressing die in the third embodiment of the present invention;

[0035] In the figure: 1, frame; 2, powder adding structure; 3, powder weighing structure; 4, powder feeding structure; 5, extrusion molding structure; 201, powder dropping pipe; 202, powder feeding channel; 203, second vibration part; 204, screening gate; 205, first screening plate; 206, second screening plate; 207, screening holes; 301, weighing unit; 302, weighing hopper; 303, rotating seat; 304, lifting cylinder; 305, lifting rod; 306, elastic element; 401, powder injection mechanism; 402, driving module; 403, injection frame; 404, first vibration part; 405, injection module; 406, injection head; 407, dredging cylinder; 408, lowering cylinder; 409, lowering plate; 410, mounting bracket; 411, spraying head; 412, rotating motor; 413, cleaning motor; 414, powder cleaning head; 415, first cleaning part; 416, second cleaning part; 417, powder dropping channel; 501, molding die; 502, upper pressing die; 503, lower pressing die; 504, extrusion cavity; 505, housing; 505, coil; 506, outer sleeve; 507, upper end cover; 508, lower end cover; 509, cooling cavity; 510, water inlet pipe; 511, water outlet pipe; 512, cooling sleeve; 601, lifting module; 602, rotating module; 603, rotating plate; 604, extrusion head; 605, cleaning module; 606, driving unit; 607, cleaning head; 608, powder collecting seat; 609, powder collecting box; 610, cleaning convex block; 611, adsorption block; 612, scraping blade; 613, extension arm; 614, cleaning channel; 615, powder suction channel; 616, elastic convex block; 617, lifting cylinder; Detailed implementation manners

[0036] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be understood that although the terms upper, middle, lower, top, one end, etc. appear in this text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for easy understanding, rather than for defining any directional or sequential limitations.

[0038] Embodiment 1

[0039] As Figures 1-9 shown, a magnetic field pressure forming device includes a frame 1, a powder adding structure 2, a powder weighing structure 3, a powder feeding structure 4, and an extrusion forming structure 5 arranged on the frame 1.

[0040] Specifically, the powder adding structure 2 includes a powder dropping pipe 201 for inputting magnetic powder and a powder feeding channel 202 for receiving and conveying magnetic powder. The powder outlet end of the powder feeding channel 202 is located above the powder weighing structure 3. The powder dropping pipe 201 is connected to a material bin and can convey magnetic powder to the powder feeding channel 202, and the powder feeding channel 202 will convey the magnetic powder to the powder weighing structure 3 for weighing.

[0041] Among them, the powder weighing structure 3 includes a weighing unit 301 for measuring the weight of magnetic powder and a weighing hopper 302 rotatably arranged on the weighing unit 301. The weighing hopper 302 is located below the powder feeding channel 202. The powder feeding channel 202 conveys magnetic powder to the weighing hopper 302. When the magnetic powder on the weighing hopper 302 reaches a certain weight, it will cause the weighing hopper 302 to rotate, so that the magnetic powder on the weighing hopper 302 pours onto the powder feeding structure 4.

[0042] In addition, the powder feeding structure 4 includes a powder injection mechanism 401 for receiving the magnetic powder of the powder weighing structure 3 and a driving module 402 for driving the powder injection mechanism 401 to move. The driving module 402 drives the powder injection mechanism 401 to move above the extrusion forming structure 5, and the powder injection mechanism 401 injects a certain amount of magnetic powder into the extrusion forming structure 5.

[0043] The extrusion forming structure 5 includes a forming die 501, an upper pressing die 502 arranged above the forming die 501, and a lower pressing die 503 arranged below the forming die 501. An extrusion cavity 504 for placing magnetic powder is formed in the forming die 501, and the upper pressing die 502 and the lower pressing die 503 are respectively placed into the extrusion cavity 504 from above and below to extrude and form the magnetic powder.

[0044] In the present invention, the automatic feeding of magnetic powder is first realized by the powder adding structure 2, then the magnetic powder is weighed by the powder weighing structure 3, and the weighed magnetic powder is transported and poured into the extrusion forming structure 5 by the powder feeding structure 4, and the magnetic powder is extruded and formed by the extrusion forming structure 5, so that multiple steps such as powder feeding, weighing, powder feeding, powder filling, and extrusion forming are integrated on one device, reducing the transfer of materials and avoiding the dropping of magnetic powder during the transfer process, which can not only improve the processing efficiency but also improve the processing quality.

[0045] As Figure 2 , Figure 3 , Figure 4 shown, for a further explanation of the implementation manner of the powder adding structure 2 in this embodiment, a second vibration part 203 for driving it to vibrate is arranged at the bottom of the powder feeding channel 202, and a liftable screening gate 204 is arranged in the powder feeding channel 202, and the fineness of the magnetic powder can be ensured through the screening gate 204, ensuring the quality of the magnetic powder.

[0046] Among them, the screening gate 204 includes a first screening plate 205 arranged near the feeding end of the powder feeding channel 202, and a second screening plate 206 arranged at the discharging end of the powder feeding channel 202. The first screening plate 205 and the second screening plate 206 are liftably arranged in the powder feeding channel 202, and screening holes 207 are formed on the first screening plate 205 and the second screening plate 206, which can prevent impurities from mixing into the magnetic powder, thereby improving the forming effect.

[0047] As Figure 5 shown, as a further explanation of the powder weighing structure 3 in this embodiment, among them, a rotating seat 303 is rotatably arranged on the weighing unit 301, the weighing hopper 302 is arranged on the rotating seat 303, and a lifting cylinder 304 is arranged on the side of the rotating seat 303. A lifting rod 305 is arranged on the action end of the lifting cylinder 304. The lifting rod 305 is located below the rotating seat 303. The lifting cylinder 304 drives the lifting rod 305 to rise, so that the weighing hopper 302 rotates for the transfer of magnetic powder. When the magnetic powder on the weighing hopper 302 reaches a certain weight, the weighing unit 301 will send a signal to the lifting cylinder 304. The lifting cylinder 304 drives the lifting rod 305 to rise and pulls the rotating seat 303 to rotate, so that the weighing hopper 302 rotates accordingly and transfers a fixed amount of magnetic powder to the powder feeding structure 4.

[0048] In addition, an elastic element 306 is arranged on the rotating seat 303. One end of the elastic element 306 abuts against the rotating seat 303, and the other end abuts against the weighing unit 301, so that the weighing hopper 302 has a movement tendency away from the feeding direction. After the powder feeding is completed, under the action of the elastic element 306, the rotating seat 303 returns to the initial position, and the next round of powder receiving work can be carried out to realize the automatic reset of the rotating seat 303.

[0049] AsFigure 6 , Figure 7 As shown in Figure 7 , for a further explanation of the powder feeding structure 4 in this embodiment, the powder injection mechanism 401 includes a material injection frame 403 for receiving magnetic powder, a first vibration part 404 for driving the material injection frame 403 to vibrate, and a material injection module 405 arranged at the discharge end of the material injection frame 403.

[0050] Among them, the material injection module 405 includes a material injection head 406 located below the discharge end of the material injection frame 403 for receiving magnetic powder, a dredging cylinder 407 located above the material injection head 406, and a lowering cylinder 408 for driving the material injection head 406 to descend. The magnetic powder is weighed and dropped into the material injection frame 403. Subsequently, the driving module 402 drives the entire powder injection mechanism 401 to move above the molding die 501. Then, the first vibration part 404 starts to vibrate, enabling the magnetic powder to enter the material injection head 406 from the material injection frame 403. Subsequently, the lowering cylinder 408 drives the material injection head 406 to abut against the molding die 501, allowing the magnetic powder to enter the extrusion cavity 504. And during the process of the magnetic powder falling, the action of the dredging cylinder 407 extends and retracts within the material injection head 406, preventing the magnetic powder from clogging in the material injection head 406, enabling the magnetic powder to accurately enter the extrusion cavity 504, and preventing the magnetic powder from scattering outside.

[0051] Furthermore, a lowering plate 409 is arranged on the action end of the lowering cylinder 408. The material injection head 406 is arranged on the lowering plate 409 and partially extends downward from the lowering plate 409. The lowering cylinder 408 drives the lowering plate 409 to descend, so that the material injection head 406 abuts against the top of the molding die 501, enabling the material injection head 406 to be in communication with the molding die 501, and allowing the magnetic powder to completely enter the extrusion cavity 504, ensuring the accuracy during the magnetic powder injection process.

[0052] Among them, the material injection module 405 is detachable, enabling the magnetic powder to also enter the interior of the molding die 501 through the powder discharge end of the material injection frame 403.

[0053] Such as Figure 8As shown, in some other embodiments, the injection module 405 further includes a rotation motor 412 that drives the lowering cylinder 408 to rotate, and the rotation motor 412 is connected to the lowering cylinder 408 so that the injection head 406 can rotate. A cleaning motor 413 is provided on the side of the rotation motor 412. A cleaning rod is connected to the end of the cleaning motor 413, and a powder cleaning head 414 is provided at the end of the cleaning rod. When the rotation motor 412 drives the lowering cylinder 408 to rotate, the entire injection head 406 rotates, so that the injection head 406 is located below the powder cleaning head 414. As the lowering cylinder 408 drives the lowering plate 409 to rise, the powder cleaning head 414 is placed inside the injection head 406. As the cleaning motor 413 drives the powder cleaning head 414 to rotate, the inside of the injection head 406 can be cleaned to remove the residual magnetic powder inside it.

[0054] Further, a powder falling channel 417 for discharging magnetic powder is formed at the end of the injection head 406. The cleaning head 607 includes a first cleaning portion 415 that fits against the inner wall of the injection head 406 and a second cleaning portion 416 that is placed in the powder falling channel 417, thereby cleaning the entire injection head 406.

[0055] Preferably, an installation bracket 410 is provided on the first vibration portion 404, and a spraying head 411 for spraying a mold release agent is provided on the installation bracket 410. The spraying head 411 can spray the mold release agent into the extrusion cavity 504, making it easier to demold the formed part after molding.

[0056] As Figure 10 shown, preferably in this embodiment, the molding die 501 includes a housing 505 and a coil 505 provided inside the housing 505. The coil 505 includes a plurality of vertical metal wires arranged at equal intervals. The inner and outer sides of the metal wires are located on the same circumferential surface. Among them, the metal wire is a copper wire, and the number is 2n. The outer side of the head end of the first copper wire is integrally connected to the outer side of the head end of the second copper wire. The outer side of the tail end of the second copper wire is integrally connected to the outer side of the tail end of the third copper wire. The outer side of the head end of the third copper wire is integrally connected to the outer side of the head end of the fourth copper wire, and so on. The outer side of the head end of the (2n - 1)th copper wire is integrally connected to the outer side of the head end of the 2nth copper wire. The tail end of the first copper wire and the tail end of the 2nth copper wire are respectively used as the input end and output end of the coil 505. The interval between every three adjacent copper wires forms a set of radial magnetic poles. The coil 505 is integrally formed by slow wire cutting of a copper plate with a thickness not exceeding 10m. Where n is a positive integer and greater than or equal to 2, the multi-stage coil 505 is uniformly graded, improving the uniformity of the surface magnetism of the coil 505, with high efficiency and low labor cost.

[0057] Further, the housing 505 includes an outer sleeve 506, an upper end cap 507 and a lower end cap 508 disposed on both sides of the outer sleeve 506. A cooling sleeve 512 is sleeved outside the coil 505. A cooling cavity 509 is formed between the cooling sleeve 512 and the outer sleeve 506. The outer sleeve 506 is provided with a water inlet pipe 510 and a water outlet pipe 511 communicating with the cooling cavity. During the use of the radial multi-stage magnetizing coil 505, cold water can be filled into the cooling cavity 509 to cool the coil 505, prevent the working temperature of the coil 505 from being too high, and improve the service life of the coil 505.

[0058] Preferably, when the gaps between the coil 505 and the cooling sleeve 512 and inside the coil 505 are filled with epoxy resin glue, the coil 505 will not be damaged due to the vibration of the copper wire under the working state of high current, the insulation strength can be enhanced, the magnetizing voltage can be increased, and the service life of the coil 505 can be extended.

[0059] Preferably, the upper pressing die 502 and the lower pressing die 503 can be oil cylinders or can be replaced with electric cylinders according to needs.

[0060] In addition, in this embodiment, the powder feeding structure 4, the powder weighing structure 3, the powder feeding structure 4, and the extrusion molding structure 5 operate synchronously to further improve the processing efficiency.

[0061] Embodiment 2

[0062] As Figure 8 shown, the injection module 405 further includes a rotating motor 412 that drives the descending cylinder 408 to rotate, and the rotating motor 412 is connected to the descending cylinder 408 so that the injection head 406 can rotate. A cleaning motor 413 is disposed on the side of the rotating motor 412. A cleaning rod is connected to the end of the cleaning motor 413, and a powder cleaning head 414 is disposed at the end of the cleaning rod. When the rotating motor 412 drives the descending cylinder 408 to rotate, the entire injection head 406 rotates, so that the injection head 406 is located below the powder cleaning head 414. As the descending cylinder 408 drives the descending plate 409 to rise, the powder cleaning head 414 is inserted into the injection head 406. As the cleaning motor 413 drives the powder cleaning head 414 to rotate, the inside of the injection head 406 can be cleaned to remove the residual magnetic powder inside.

[0063] Embodiment 3

[0064] As Figures 11-13As shown in the figure, the difference between this embodiment and the first embodiment is that the lower pressing die 503 includes a lifting module 601, a rotating module 602 disposed on the moving end of the lifting module 601, a rotating plate 603 disposed on the moving end of the rotating module 602, and an extrusion head 604 for extruding magnetic powder is disposed at one end of the rotating plate 603, and a cleaning module 605 for cleaning the extrusion cavity 504 is disposed at the other end. The cleaning module 605 includes a driving unit 606 and a cleaning head 607 connected to the output end of the driving unit 606.

[0065] After each forming part is completed, the rotating module 602 drives the rotating plate 603 to rotate, so that the cleaning module 605 is arranged upward. And as the lifting module 601 rises, the cleaning head 607 of the cleaning module 605 is placed into the extrusion cavity 504. Subsequently, the driving unit 606 drives the cleaning head 607 to rotate to adhere to the magnetic powder inside the extrusion cavity 504.

[0066] Among them, the cleaning head 607 is made of neoprene, which has a certain viscosity and good elasticity. As the cleaning head 607 rotates, the magnetic powder in the extrusion cavity 504 will adhere to the cleaning head 607, ensuring that there is no residual magnetic powder in the extrusion cavity 504 and avoiding long-term accumulation, which affects the extrusion forming effect.

[0067] In some other embodiments, the cleaning head 607 can be made of elastic plastic material, and an adsorption unit is embedded inside the cleaning head 607, so that the magnetic powder in the extrusion cavity 504 can be adsorbed onto the cleaning head 607.

[0068] Among them, a powder collecting seat 608 for placing the cleaning head 607 is formed on the frame 1, and a powder collecting box 609 for collecting magnetic powder is arranged at the bottom of the powder collecting seat 608. After cleaning the extrusion cavity 504, the rotating module 602 drives the rotating plate 603 to rotate, so that the cleaning module 605 is arranged downward, and the cleaning head 607 enters the powder collecting seat 608. Subsequently, the driving unit 606 drives the cleaning head 607 to rotate, and the cleaning head 607 collides and rubs inside the powder collecting seat 608, so that the magnetic powder on the cleaning head 607 falls into the powder collecting seat 608, and the magnetic powder will enter the powder collecting box 609 along the powder collecting seat 608 for collection.

[0069] Furthermore, a cleaning channel 614 for placing the cleaning head 607 is formed on the powder collecting seat 608. A plurality of cleaning bumps 610 are arranged at intervals inside the powder collecting seat 608, and a powder absorbing channel 615 is formed between the cleaning bumps 610. An adsorption block 611 for adsorbing magnetic powder is slidably arranged inside the powder absorbing channel 615.

[0070] The cleaning head 607 has a plurality of elastic bumps 616. During the rotation of the cleaning head 607, the elastic bumps 616 enter the cleaning channel 614. As the cleaning head 607 rotates, the elastic bumps 616 rub against and abut against the cleaning bumps 610, causing the magnetic powder to separate from the cleaning head 607. And part of the magnetic powder will directly fall into the powder collection box 609 at the bottom of the powder collection seat 608, and another part will enter the cleaning channel 614 and be adsorbed on the adsorption block 611, thereby realizing the collection of the magnetic powder.

[0071] In addition, a lifting cylinder 617 for driving the adsorption block 611 to move up and down is arranged at the bottom of the adsorption block 611, and a scraping blade 612 is formed at the bottom of the cleaning channel 614. The scraping blade 612 has an extension arm 613 extending towards the powder collection box 609. When the lifting cylinder 617 drives the adsorption block 611 to descend, the magnetic powder adsorbed on the adsorption block 611 will be scraped off by the scraping blade 612 and fall into the powder collection box 609 along the extension arm 613, thereby realizing the gathering of the magnetic powder.

[0072] This specific embodiment is only an explanation of the present invention and is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A magnetic field pressure forming device, characterized in that: It comprises a frame (1), a powder adding structure (2), a powder weighing structure (3), a powder feeding structure (4), and an extrusion molding structure (5) arranged on the frame (1); The powder adding structure (2) comprises a powder dropping pipe (201) for inputting magnetic powder, and a powder delivery channel (202) for receiving and transporting the magnetic powder, wherein the powder outlet end of the powder delivery channel (202) is located above the powder weighing structure (3); The powder weighing structure (3) comprises a weighing unit (301) for measuring the weight of magnetic powder, and a weighing hopper (302) mounted on the weighing unit (301), wherein the weighing hopper (302) is located below the powder feeding channel (202), and the weighing hopper (302) rotates to transfer a certain amount of magnetic powder to the powder feeding structure (4); The powder feeding structure (4) comprises a powder injection mechanism (401) for receiving magnetic powder from the powder weighing structure (3), and a driving module (402) for driving the powder injection mechanism (401) to move, wherein the driving module (402) drives the powder injection mechanism (401) to move above the extrusion molding structure (5), and the powder injection mechanism (401) injects a certain amount of magnetic powder into the extrusion molding structure (5); An extrusion molding structure (5) comprises a molding die (501), an upper die (502) arranged above the molding die (501), and a lower die (503) arranged below the molding die (501); an extrusion cavity (504) for inserting magnetic powder is formed in the molding die (501); the upper die (502) and the lower die (503) are respectively inserted into the extrusion cavity (504) from above and below to extrude and mold the magnetic powder; The lower pressing die (503) comprises a lifting die (601), a rotating die (602) arranged on the action end of the lifting die (601), and a rotating plate (603) arranged on the action end of the rotating die (602), wherein an extrusion head (604) for extruding magnetic powder is arranged at one end of the rotating plate (603), and a cleaning die (605) for cleaning the extrusion cavity (504) is arranged at the other end, wherein the cleaning die (605) comprises a driving unit (606), and a cleaning head (607) connected to the output end of the driving unit (606). The frame (1) is provided with a powder collecting seat (608) for the cleaning head (607) to be placed therein, and a powder collecting box (609) for collecting magnetic powder is provided at the bottom of the powder collecting seat (608), a cleaning channel (614) for the cleaning head (607) to be placed therein is formed on the powder collecting seat (608), a plurality of cleaning protrusions (610) arranged at intervals are formed in the powder collecting seat (608), and a powder suction channel (615) is formed between the cleaning protrusions (610), and an adsorption block (611) for adsorbing magnetic powder is slidably provided in the powder suction channel (615).

2. A magnetic field pressure forming device according to claim 1, characterized in that: The powder injection mechanism (401) comprises a material injection frame (403) for receiving magnetic powder, a first vibrating part (404) for driving the material injection frame (403) to vibrate, and a material injection module (405) arranged on the discharge end of the material injection frame (403), wherein the material injection module (405) comprises a material injection head (406) for receiving magnetic powder located below the discharge end of the material injection frame (403), a clearing cylinder (407) located above the material injection head (406), and a descending cylinder (408) for driving the material injection head (406) to descend, wherein the action end of the clearing cylinder (407) is placed in the material injection head (406).

3. A magnetic field pressure forming device according to claim 2, characterized in that: A descending plate (409) is provided on the action end of the descending cylinder (408), and the injection head (406) is provided on the descending plate (409) and partially extends downward from the descending plate (409). The descending cylinder (408) drives the descending plate (409) to descend so that the injection head (406) abuts against the top of the molding mold (501).

4. A magnetic field pressure forming device according to claim 2, characterized in that: A mounting bracket (410) is provided on the first vibration part (404), and a spray head (411) for spraying a release agent is provided on the mounting bracket (410).

5. The magnetic field pressure forming device according to claim 1, characterized in that: A second vibrating portion (203) for driving the powder delivery channel (202) to vibrate is disposed at the bottom of the powder delivery channel (202), and a sieving gate (204) that can be raised and lowered is disposed in the powder delivery channel (202).

6. The magnetic field pressure forming device according to claim 1, characterized in that: A rotating seat (303) is rotatably provided on the weighing unit (301), and a lifting cylinder (304) is provided on the side of the rotating seat (303). A lifting rod (305) is provided on the action end of the lifting cylinder (304). The lifting rod (305) is located below the rotating seat (303). The lifting cylinder (304) drives the lifting rod (305) to rise, so that the weighing hopper (302) rotates to transfer the magnetic powder. An elastic element (306) is provided on the rotating seat (303), one end of the elastic element (306) is in contact with the rotating seat (303), and the other end is in contact with the weighing unit (301), so that the weighing hopper (302) has a tendency to move away from the feeding direction.

7. The magnetic field pressure forming device according to claim 1, characterized in that: The molding die (501) comprises a shell, and a coil (505) arranged inside the shell, the coil (505) comprises a plurality of metal wires arranged in parallel and evenly spaced, the inner side and the outer side of the metal wire are respectively located on the same circumferential surface, the shell comprises an outer sleeve (506) and an upper end cover (507) and a lower end cover (508) arranged on both sides of the outer sleeve (506), the outer side of the coil (505) is provided with a cooling sleeve (512), a cooling cavity (509) is formed between the cooling sleeve (512) and the outer sleeve (506), and the outer sleeve (506) is provided with a water inlet pipe (510) and a water outlet pipe (511) connected to the cooling cavity (509).

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