Manganese-zinc electromagnetic wave absorption material stamping device with self-filling function

Abstract

The present invention relates to the technical field of processing of manganese-zinc electromagnetic wave absorbing materials. Specifically, it relates to a stamping device for manganese-zinc electromagnetic wave absorbing materials with a self-filling function. It includes a fuselage; a hydroforming mechanism, which is arranged on the top of the fuselage and has a forming cavity for storing powder inside, and an adjusting plate capable of moving up and down, which presses the powder into shape through the forming cavity; after pressing and forming, the adjusting plate moves downward so that the formed powder protrudes above the adjusting plate; a feeding mechanism, which is slidably arranged on the top of the adjusting plate. In this stamping device for manganese-zinc electromagnetic wave absorbing materials with a self-filling function, through the cooperation of the gap and the guiding member, a gap can be formed after the powder is formed, so that during the reset process of the feeding mechanism, the guiding member extends into the gap to scrape the powder on the top of the fuselage, thereby filling the powder into the forming cavity to avoid waste of powder.

Description

Technical Field

[0001] The present invention relates to the technical field of processing of manganese-zinc electromagnetic wave absorbing materials, and more specifically, to a stamping device for manganese-zinc electromagnetic wave absorbing materials with a self-filling function. Background Art

[0002] An electromagnetic wave absorbing material refers to a type of material that can absorb or significantly attenuate the electromagnetic wave energy received on its surface, thereby reducing electromagnetic wave interference. In engineering applications, in addition to requiring the electromagnetic wave absorbing material to have a high absorption rate for electromagnetic waves within a relatively wide frequency band, it is also required to have properties such as light weight, temperature resistance, humidity resistance, and corrosion resistance.

[0003] Manganese-zinc ferrite is a material with dielectric and magnetic properties, and its wave absorption characteristics are related to the frequency of electromagnetic waves. When electromagnetic waves enter the manganese-zinc ferrite material, the iron ions in its molecular structure will absorb the electromagnetic waves, thereby converting the energy of the electromagnetic waves into heat energy. This absorption effect can effectively weaken or eliminate electromagnetic wave interference and achieve the wave absorption effect.

[0004] In the process of manufacturing manganese-zinc electromagnetic wave absorbing materials, zinc ferrite particles ground into a powder state are mixed with polymers, and then the above materials are pressed by a molding machine to form the materials under high pressure.

[0005] In related technologies, for example, a Chinese patent with the publication number CN110328362A discloses a powder molding machine, including a machine base, a molding machine die frame mechanism, a feeding mechanism, and a discharging mechanism. The molding machine die frame mechanism is arranged on the machine base. The molding machine die frame mechanism includes a die frame, an upper die assembly, and a lower die assembly. The upper die assembly and the lower die assembly are symmetrically arranged in the die frame. The lower die assembly is provided with a molding cavity. The upper die assembly is used to extrude the powder accumulated in the molding cavity to form the powder into a preset shape. The feeding mechanism is used to convey the powder into the molding cavity. The discharging mechanism is used to output the molded product.

[0006] However, when the powder is conveyed into the molding cavity, some of the powder will also fall onto the surface of the adjusting plate along the bottom of the feeding structure, resulting in a large amount of powder remaining on the top of the adjusting plate and causing waste. Summary of the Invention

[0007] The purpose of the present invention is to provide a stamping device for manganese-zinc electromagnetic wave absorbing materials with a self-filling function to solve the problems raised in the above background art.

[0008] To achieve the above purpose, there is provided a stamping device for manganese-zinc electromagnetic wave absorbing materials with a self-filling function, including

[0009] a fuselage;

[0010] The hydraulic forming mechanism is arranged at the top of the fuselage and has a forming cavity for storing powder inside, as well as an adjusting plate capable of moving up and down. The powder is pressed into shape through the forming cavity. After pressing and forming, the adjusting plate moves downward so that the formed powder protrudes above the adjusting plate.

[0011] The feeding mechanism is slidably arranged on the top of the adjusting plate. When the feeding mechanism slides towards one end of the adjusting plate, it conveys the powder into the forming cavity. When the adjusting plate moves downward, a gap is formed between the bottom of the feeding mechanism and the adjusting plate; and

[0012] The guiding member can extend into the gap to scrape and collect the excess powder on the top of the adjusting plate during the reset process of the feeding mechanism towards the other end of the adjusting plate.

[0013] As a further improvement of this technical solution, the hydraulic forming mechanism includes a first hydraulic cylinder fixed to the top of the fuselage, an upper mold fixedly connected to the bottom of the first hydraulic cylinder, and a base and an adjusting plate located between the first hydraulic cylinder and the fuselage; among which:

[0014] The base is fixed to the top of the fuselage, and a lower mold protrudes from the top of the base;

[0015] The adjusting plate is located above the base. The adjusting plate is connected to the fuselage through a second hydraulic cylinder. A mold groove that can sleeve the outer wall of the lower mold is opened on the top of the base. A forming cavity is formed between the mold groove and the lower mold for the upper mold to insert and press the powder into shape.

[0016] As a further improvement of this technical solution, the feeding mechanism includes a storage box slidably arranged on the top of the adjusting plate. The bottom of the storage box has a discharge port. When the storage box slides above the forming cavity, the discharge port communicates with the forming cavity and fills the powder in the storage box into the forming cavity;

[0017] Vertical plates are arranged at both ends of the storage box on the top of the adjusting plate. The two vertical plates are located on both sides of the storage box to limit the storage box;

[0018] An electric push rod is arranged between the storage box and the adjusting plate. One end of the electric push rod is fixedly connected to one end of the adjusting plate, and the other end is longitudinally slidably connected to the side wall of the storage box.

[0019] As a further improvement of this technical solution, it further includes a jacking member. The jacking member includes convex plates fixedly arranged on both sides of the storage box, and a top plate with one end fixedly connected to the top of the base and the other end passing through the adjusting plate and supporting the convex plates;

[0020] When the adjusting plate moves downward, the top plate supports the storage box to maintain a fixed height, so that a gap is formed between the storage box and the top of the adjusting plate.

[0021] As a further improvement of the technical solution, a circular tube is longitudinally slidably arranged on the inner wall of the discharge port at the bottom of the storage box, and a connecting spring is arranged between the top of the circular tube and the top of the storage box.

[0022] As a further improvement of the technical solution, a filter screen is arranged at the bottom end of the circular tube.

[0023] As a further improvement of the technical solution, the guiding member includes a scraping plate longitudinally slidably arranged on the side wall of the storage box, and a compression spring elastically connecting the two is arranged between the top of the scraping plate and the top of the storage box.

[0024] As a further improvement of the technical solution, the downward movement distance of the adjusting plate is greater than the length of the compression spring.

[0025] As a further improvement of the technical solution, a movable plate is elastically connected to the top of the base through a return spring. The movable plate passes through the through hole opened at the top of the adjusting plate. A first inclined surface is arranged on one side of the scraping plate close to the movable plate, second inclined surfaces are arranged at both ends of the top of the movable plate, and barbs are arranged on one side of the movable plate close to the second inclined surface.

[0026] As a further improvement of the technical solution, a material guiding cavity is arranged inside the scraping plate. An inlet communicating with the material guiding cavity is arranged on one side of the scraping plate close to the storage box. The top of the material guiding cavity is communicated with a material guiding pipe, and one end of the material guiding pipe is communicated with the inside of the storage box; an installation groove is opened at one end of the top of the adjusting plate, and a piston plate is slidably arranged in the installation groove. An installation spring elastically connecting the two is arranged between the bottom of the piston plate and the bottom of the installation groove.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. In the manganese-zinc electromagnetic wave absorbing material stamping device with a self-filling function, through the cooperation of the top plate and the guiding member, a gap can be formed after the powder is formed, so that during the reset process of the feeding mechanism, the guiding member extends into the gap to scrape the powder on the top of the machine body, thereby filling the powder into the forming cavity to avoid waste of powder.

[0029] 2. In the manganese-zinc electromagnetic wave absorbing material stamping device with a self-filling function, during the process of compression energy storage and elastic release of the connecting spring, the surrounding powder will be disturbed due to the change of state, so that the powder can roll downwards, avoiding the phenomenon of powder aggregation and caking at a certain part in the storage box.

[0030] 3. In the manganese-zinc electromagnetic wave absorbing material stamping device with a self-filling function, during the reset process of the scraping plate, through the compression of the closed space, the powder located at the material guiding cavity is sucked into the gap, thereby realizing the rapid recovery and utilization of the powder on the top of the adjusting plate. Brief Description of the Drawings

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a schematic cross-sectional view of the overall structure of the present invention;

[0033] Figure 3 is a schematic diagram of the structure of the adjusting plate of the present invention;

[0034] Figure 4 is a schematic diagram of the structure of the gap of the present invention;

[0035] Figure 5 is a schematic diagram of the structure of the circular tube of the present invention;

[0036] Figure 6 is a schematic diagram of the structure of the movable plate of the present invention;

[0037] Figure 7 is a schematic diagram of the structure of the piston plate of the present invention.

[0038] The meanings of the various reference numerals in the figure are as follows:

[0039] 100, fuselage; 101, first hydraulic cylinder; 102, movable end; 103, upper mold; 104, base; 105, second hydraulic cylinder; 106, lower mold;

[0040] 110, adjusting plate; 111, vertical plate; 112, storage box; 113, electric push rod; 114, mold cavity;

[0041] 120, top plate; 121, convex plate; 122, gap;

[0042] 130, circular tube; 131, connecting spring; 132, filter screen;

[0043] 140, material guiding member; 141, scraping plate; 142, compression spring; 143, first inclined surface; 144, material guiding cavity; 145, material guiding pipe; 150, movable plate; 151, return spring; 152, second inclined surface; 153, convex thorns; 160, piston plate; 161, mounting spring. Detailed Embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in 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 in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0047] Please refer to Figures 1-4 As shown, a stamping device for manganese-zinc electromagnetic wave absorbing material with a self-filling function is provided, including a fuselage 100, a hydraulic forming mechanism, a feeding mechanism, and a guiding member 140. Among them, the hydraulic forming mechanism is arranged on the top of the fuselage 100, and has a forming cavity for storing powder inside, and an adjusting plate 110 that can move up and down. The powder is pressed into shape through the forming cavity. After being pressed into shape, the adjusting plate 110 moves downward so that the formed powder protrudes above the adjusting plate 110. The feeding mechanism is slidably arranged on the top of the adjusting plate 110. When the feeding mechanism slides towards one end of the adjusting plate 110, the powder is conveyed into the forming cavity. When the adjusting plate 110 moves downward, a gap 122 is formed between the bottom of the feeding mechanism and the adjusting plate 110. The guiding member 140 can extend into the gap 122 to scrape and collect the excess powder on the top of the adjusting plate 110 during the process of the feeding mechanism resetting towards the other end of the adjusting plate 110.

[0048] The stamping device for manganese-zinc electromagnetic wave absorbing material with a self-filling function of the present disclosure, through the cooperation of the top plate 120 and the guiding member 140, can form a gap 122 after the powder is formed. During the resetting process of the feeding mechanism, the guiding member 140 extends into the gap 122 to scrape the powder on the top of the fuselage 100, thereby filling the powder into the forming cavity and avoiding the waste of powder.

[0049] As Figure 2 shown, in some embodiments, the hydraulic forming mechanism includes a first hydraulic cylinder 101 fixed on the top of the fuselage 100, an upper mold 103 fixedly connected to the bottom of the first hydraulic cylinder 101, and a base 104 and an adjusting plate 110 located between the first hydraulic cylinder 101 and the fuselage 100. Then, asFigure 3 As shown in the figure, the base 104 is fixed to the top of the fuselage 100, and a lower mold 106 protrudes from the top of the base 104. The adjusting plate 110 is located above the base 104, and the adjusting plate 110 is connected to the fuselage 100 through a second hydraulic cylinder 105. A mold groove 114 that can be sleeved on the outer wall of the lower mold 106 is provided at the top of the base 104. A forming cavity is formed between the mold groove 114 and the lower mold 106 for the upper mold 103 to be inserted to press the powder into a shape. In this way, when the first hydraulic cylinder 101 drives the upper mold 103 to move downward, the upper mold 103 can be inserted into the forming cavity formed between the mold groove 114 and the lower mold 106, and powder is placed in the forming cavity. After the upper mold 103 is inserted into the forming cavity, under the action of high pressure, the powder is pressed into an absorbing material.

[0050] It should be noted that, to improve the stability of the upper mold 103 when moving downward, the present disclosure also provides a movable end 102 that fixedly connects the upper mold 103 and the first hydraulic cylinder 101. Four columns are slidably arranged around the movable end 102, and the four columns are fixedly arranged on the top of the adjusting plate 110, so as to limit the upper mold 103 and prevent the upper mold 103 from displacing during the downward movement.

[0051] After the absorbing material is pressed into a shape, the second hydraulic cylinder 105 is controlled to descend to drive the adjusting plate 110 to move downward. During the downward movement, the top of the mold groove 114 gradually approaches the top of the lower mold 106 until they are flush. After being flush, the formed absorbing material protrudes from the top of the adjusting plate 110. Then, the formed absorbing material is pushed to one end of the adjusting plate 110 in a sliding manner by a feeding mechanism, and when it slides above the forming cavity, powder is filled into the forming cavity.

[0052] The structure of the feeding mechanism is as Figure 3 shown. In some embodiments, the feeding mechanism includes a storage box 112 slidably arranged on the top of the adjusting plate 110. The top of the storage box 112 has an opening to enable external powder to be conveyed into the storage box 112. For example, a pipeline for conveying powder is connected to the opening, and powder is fed into the storage box 112 by conveying powder into the pipeline. At the same time, the bottom of the storage box 112 has a discharge port. When the storage box 112 slides above the forming cavity, the discharge port communicates with the forming cavity, and the powder in the storage box 112 is filled into the forming cavity. That is to say, the discharge port and the forming cavity are on the same axis. When the storage box 112 does not slide above the forming cavity, the discharge port contacts the top of the adjusting plate 110, and at this time, the powder in the storage box 112 cannot be discharged; when the storage box 112 slides above the forming cavity, the discharge port communicates with the forming cavity, and the powder in the storage box 112 is filled into the forming cavity.

[0053] Moreover, vertical plates 111 are provided at both ends of the top of the adjusting plate 110 and located on both sides of the storage box 112. The two vertical plates 111 can limit the storage box 112 on both sides to prevent the storage box 112 from shaking left and right. At the same time, as the power source for the sliding of the storage box 112, an electric push rod 113 is provided between the storage box 112 and the adjusting plate 110. One end of the electric push rod 113 is fixedly connected to one end of the adjusting plate 110, and the other end is longitudinally slidably connected to the side wall of the storage box 112. The longitudinal sliding connection can prevent the adjusting plate 110 from pulling the storage box 112 down during the downward movement through the electric push rod 113.

[0054] The formation of the gap 122 is achieved by a jacking member. As Figure 3 shown, in some embodiments, the jacking member includes convex plates 121 fixedly provided on both sides of the storage box 112, and a top plate 120 with one end fixedly connected to the top of the base 104 and the other end passing through the adjusting plate 110 and supporting the convex plate 121. In this way, under normal conditions, the bottom of the storage box 112 contacts the top of the adjusting plate 110 to prevent the powder in the storage box 112 from being discharged through the discharge port to the top of the adjusting plate 110; when the adjusting plate 110 moves downward, since the height of the top plate 120 does not change, the storage box 112 will maintain a fixed height, so that when the adjusting plate 110 moves downward, a gap 122 is formed between the storage box 112 and the top of the adjusting plate 110.

[0055] Once the gap 122 is formed, the powder in the storage box 112 will fall into the gap 122 through the discharge port, resulting in the leakage of the powder in the storage box 112. To avoid the phenomenon of powder leakage, as Figure 5 shown, in some implementations of the present disclosure, a circular tube 130 is longitudinally slidably provided on the inner wall of the discharge port at the bottom of the storage box 112. The top of the circular tube 130 is elastically connected to the top of the storage box 112, so that when a gap 122 appears between the storage box 112 and the adjusting plate 110, the circular tube 130 can elastically pop down to the top of the adjusting plate 110 to prevent the leakage of powder. Among them, the elastic connection between the circular tube 130 and the storage box 112 can be constructed in any suitable manner as long as it can meet the above requirement of popping down to the top of the adjusting plate 110.

[0056] In some embodiments, a connecting spring 131 can be provided between the top of the circular tube 130 and the inner wall of the top of the storage box 112. Under normal conditions, the connecting spring 131 is in a compressed state. When a gap appears between the storage box 112 and the adjusting plate 110, the elasticity of the connecting spring 131 is released, thereby pushing the circular tube 130 downward.

[0057] It can be understood that during the process of compression energy storage and elastic release of the connecting spring 131, the change in state will interfere with the surrounding powder, enabling the powder to roll downwards, avoiding the aggregation of the powder at a certain part in the storage box 112 and preventing the phenomenon of caking.

[0058] In some embodiments, a filter screen 132 may be further provided at the bottom end of the circular tube 130. The filter screen 132 located at the end of the circular tube 130 can filter the powder in the storage box 112. Moreover, with the cooperation of the above-mentioned connecting spring 131, the moving circular tube 130 can also prevent the powder from aggregating on the top of the filter screen 132 and avoid the phenomenon of caking.

[0059] Figure 5 The structural diagram of the material guiding member 140 is shown. As shown in the figure, in some embodiments, the material guiding member 140 includes a scraping plate 141 longitudinally and slidably arranged on the side wall of the storage box 112. A compression spring 142 for elastically connecting the top of the scraping plate 141 and the top of the storage box 112 is provided between the top of the scraping plate 141 and the top of the storage box 112. Both ends of the compression spring 142 are fixedly connected with connecting plates. One connecting plate is fixedly connected with the top of the scraping plate 141, and the other connecting plate is fixedly connected with the side wall of the storage box 112. In this way, in the normal state, the compression spring 142 is in a compressed state, and the bottom end of the scraping plate 141 is in contact with the top of the adjusting plate 110. When the storage box 112 is formed between the storage box 112 and the adjusting plate 110, the elasticity of the compression spring 142 is released, thereby pushing the scraping plate 141 downward to extend into the gap 122 and contact the top of the adjusting plate 110.

[0060] In some embodiments, the formed wave-absorbing material protrudes above the adjusting plate 110. The telescopic end of the electric push rod 113 extends to push the storage box 112 to move. The movement of the storage box 112 drives the scraping plate 141 to move, pushing the formed wave-absorbing material and the excess powder on the top of the adjusting plate 110 to one end of the adjusting plate 110. Then, continue to control the adjusting plate 110 to move downward so that the downward movement distance of the adjusting plate 110 can be greater than the length of the compression spring 142. At this time, the bottom of the scraping plate 141 is separated from the top of the adjusting plate 110. Then, continue to push the storage box 112 to move, so that the storage box 112 drives the scraping plate 141 to cross over the powder. After crossing over the powder, control the adjusting plate 110 to move upward so that the bottom end of the scraping plate 141 contacts the top of the adjusting plate 110 again. At this time, the powder is located between the scraping plate 141 and the storage box 112. During the reset process of the storage box 112, the scraping plate 141 follows the reset of the storage box 112 and scrapes the powder into the forming cavity.

[0061] In other embodiments, such as Figure 6As shown, the top of the base 104 is elastically connected with a movable plate 150 through a return spring 151, and the movable plate 150 passes through a through hole opened at the top of the adjusting plate 110. A first inclined surface 143 is arranged on one side of the scraper 141 close to the movable plate 150, second inclined surfaces 152 are arranged at both ends of the top of the movable plate 150, and barbs 153 are arranged on one side of the movable plate 150 close to the second inclined surfaces 152. In this way, when the material storage box 112 drives the scraper 141 to move towards one end of the adjusting plate 110, the first inclined surface 143 on the side wall of the scraper 141 pushes the movable plate 150. Due to the action of the return spring 151, when the movable plate 150 is squeezed by the first inclined surface 143, it first displaces towards the other side of the through hole. During the displacement process, the barbs 153 contact the side wall of the through hole. At this time, the friction between the first inclined surface 143 and the through hole is increased through the barbs 153, so that the first inclined surface 143 of the scraper 141 cannot press the movable plate 150 to move downwards. At this time, the scraper 141 moves upwards through the first inclined surface 143, so that the scraper 141 is separated from the top of the adjusting plate 110. When the scraper 141 reaches the other end of the movable plate 150, the scraper 141 moves downwards elastically to cross the powder. After crossing the powder, the material storage box 112 is controlled to reset. During the reset process, the scraper 141 follows the material storage box 112 to reset and scrapes the powder into the forming cavity.

[0062] It can be understood that to facilitate scraping the powder into the forming cavity, the width in the forming cavity can be the same as the length of the scraper 141; the scraper 141 can also be set in a "V" shape, so that when scraping the powder, the powder is gathered at the bending point of the scraper 141 to make all the powder scraped into the forming cavity; a storage cavity can also be arranged between the scraper 141 and the side wall of the material storage box 112, so that when there is more powder, part of the powder can be temporarily stored in the storage cavity.

[0063] Such as Figures 5-7As shown in the figure, in order to implement another method of collecting powder, in some other embodiments, a material guiding cavity 144 is provided inside the scraping plate 141. An inlet communicating with the material guiding cavity 144 is provided on one side of the scraping plate 141 close to the storage box 112. A material guiding pipe 145 is connected to the top of the material guiding cavity 144. One end of the material guiding pipe 145 is connected to the inside of the storage box 112. An installation groove is formed at one end of the top of the adjusting plate 110. A piston plate 160 is slidably arranged in the installation groove. An installation spring 161 elastically connecting the two is arranged between the bottom of the piston plate 160 and the bottom of the installation groove. In this way, when the storage box 112 drives the scraping plate 141 to reset, the scraping plate 141, the piston plate 160 and the two vertical plates 111 together enclose a sealed space for the gap 122. This sealed space is only communicated with the material guiding cavity 144 through the inlet. Therefore, during the reset process, the distance between the scraping plate 141 and the piston plate 160 becomes closer, the sealed space gradually decreases, the air pressure inside the sealed space becomes larger, and thus it flows into the storage box 112 through the inlet, the material guiding cavity 144 and the material guiding pipe 145. During the flowing process, the gas will also blow the powder into the gap 122.

[0064] In summary, during the reset process of the scraping plate 141, by compressing the sealed space, the powder located at the material guiding cavity 144 is sucked into the gap 122, so as to realize the rapid recovery and utilization of the powder on the top of the adjusting plate 110.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A punching device for manganese-zinc electromagnetic absorbing materials with self-filling function, characterized in that: include: fuselage(100); A hydraulic molding mechanism is arranged on the top of the machine body (100) and has a molding cavity for storing powder inside, and an adjustment plate (110) capable of moving up and down, and the powder is pressed and molded through the molding cavity; after the pressing and molding, the adjustment plate (110) moves downward so that the molded powder protrudes on the top of the adjustment plate (110); A feeding mechanism is slidably disposed on the top of the adjustment plate (110), and when the feeding mechanism slides toward one end of the adjustment plate (110), the powder is transported into the molding cavity, and when the adjustment plate (110) moves downward, a gap (122) is formed between the bottom of the feeding mechanism and the adjustment plate (110); and The material guide member (140) can extend into the gap (122) to scrape and collect excess powder on the top of the adjustment plate (110) when the feeding mechanism is reset to the other end of the adjustment plate (110); The feeding mechanism comprises a material storage box (112) slidably arranged on the top of the adjustment plate (110), and also comprises a push member, the push member comprising convex plates (121) fixedly arranged on both sides of the material storage box (112), and a top plate (120) having one end fixedly connected to the top of the base (104) and the other end penetrating the adjustment plate (110) and supporting the convex plates (121); When the adjustment plate (110) moves downward, the top plate (120) supports the material storage box (112) to maintain a fixed height, thereby forming a gap (122) between the material storage box (112) and the top of the adjustment plate (110); The material guide member (140) comprises a scraper (141) longitudinally slidably arranged on the side wall of the material storage box (112), and a compression spring (142) is arranged between the top of the scraper (141) and the top of the material storage box (112) to elastically connect the two.

2. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 1 is characterized in that: The hydraulic forming mechanism comprises a first hydraulic cylinder (101) fixed on the top of a fuselage (100), an upper mold (103) fixedly connected to the bottom of the first hydraulic cylinder (101), and a base (104) and an adjustment plate (110) located between the first hydraulic cylinder (101) and the fuselage (100); wherein: The base (104) is fixed on the top of the fuselage (100), and a lower mold (106) protrudes from the top of the base (104); The adjustment plate (110) is located above the base (104); the adjustment plate (110) is connected to the fuselage (100) via a second hydraulic cylinder (105); a die groove (114) is provided on the top of the base (104) and can be sleeved on the outer wall of the lower mold (106); a molding cavity is formed between the die groove (114) and the lower mold (106) for the upper mold (103) to be inserted to press the powder into a mold.

3. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 2 is characterized in that: The bottom of the material storage box (112) is provided with a discharge port, and when the material storage box (112) slides to above the molding cavity, the discharge port communicates with the molding cavity, and the powder in the material storage box (112) is filled into the molding cavity; The top of the adjustment plate (110) is located at both ends of the material storage box (112) and is provided with vertical plates (111); the two vertical plates (111) are located at both sides of the material storage box (112) and can limit the position of the material storage box (112); An electric push rod (113) is provided between the material storage box (112) and the adjustment plate (110); one end of the electric push rod (113) is fixedly connected to one end of the adjustment plate (110), and the other end is longitudinally slidably connected to the side wall of the material storage box (112).

4. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 3 is characterized in that: A circular tube (130) is longitudinally slidably disposed on the inner wall of the discharge opening at the bottom of the material storage box (112), and a connecting spring (131) is disposed between the top of the circular tube (130) and the top of the material storage box (112).

5. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 4 is characterized in that: A filter screen (132) is provided at the bottom end of the circular tube (130).

6. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 1 is characterized in that: The downward movement distance of the adjustment plate (110) is greater than the length of the compression spring (142).

7. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 1 is characterized in that: The top of the base (104) is elastically connected to a movable plate (150) via a return spring (151); the movable plate (150) passes through a through opening opened at the top of the adjustment plate (110); a first inclined surface (143) is provided on one side of the scraper (141) close to the movable plate (150); second inclined surfaces (152) are provided at both ends of the top of the movable plate (150); and a convex thorn (153) is provided on one side of the movable plate (150) close to the second inclined surface (152).

8. The punching device of manganese-zinc electromagnetic absorbing material with self-filling function according to claim 1 is characterized in that: A material guide cavity (144) is arranged inside the scraper (141); an inlet communicating with the material guide cavity (144) is arranged on a side of the scraper (141) close to the material storage box (112); a material guide tube (145) is communicated with the top of the material guide cavity (144); one end of the material guide tube (145) is communicated with the inside of the material storage box (112); a mounting groove is arranged at one end of the top of the adjustment plate (110); a piston plate (160) is slidably arranged in the mounting groove; a mounting spring (161) is arranged between the bottom of the piston plate (160) and the bottom of the mounting groove to elastically connect the two.

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