Inductor hot-pressing precision powder filling machine and powder filling method thereof

Abstract

The invention discloses an inductor hot-pressing precision powder filling machine and a powder filling method thereof.The inductor hot-pressing precision powder filling machine comprises a rack, a cold pressing mechanism, a cold pressing mold core and a powder feeding mechanism, the cold pressing mechanism is connected to the rack, the cold pressing mechanism comprises an upper stamping structure and a lower stamping structure which are vertically and oppositely arranged, and the upper stamping structure is connected with the lower stamping structure; a pressing space is formed between the upper stamping structure and the lower stamping structure; the cold pressing mold core is arranged in the pressing space and comprises a prefabricated block female mold, the upper stamping structure is located above the prefabricated block female mold, the lower stamping structure is located below the prefabricated block female mold, and the prefabricated block female mold is slidably connected with a hot pressing mold plate; the powder feeding mechanism is connected to one side of the cold pressing mold core and used for filling the prefabricated block female mold with powder. According to the technical scheme, the powder filling uniformity is improved, powder residues are reduced, and the powder filling amount is effectively controlled.

Description

Technical Field

[0001] The invention relates to the technical field of powder filling machines, and in particular to an inductive hot pressing precision powder filling machine and a powder filling method thereof. Background Art

[0002] In the inductor production process, powder filling is an important step in the hot pressing packaging stage, especially when filling hot pressing powder, the precise filling of powder plays a vital role in the performance and quality of the final product. The powder filling process in inductor production requires that the powder is evenly distributed in multiple cavities of the mold to ensure that the product after hot pressing packaging has consistent physical properties, especially the precise control of the powder filling amount, which directly affects the performance and stability of the inductor.

[0003] At present, the commonly used powder filling equipment in the inductor production process is a fixed volume powder filling machine, which generally includes a powder box, a powder filling plate, a powder filling plate upper cover, a powder filling plate lower cover, and a set of hot pressing template positioning and lifting mechanisms. Its basic working principle is that the powder in the powder box enters the holes of the mold template through the holes on the powder filling plate under the action of gravity and vibration. The action sequence of the powder filling process is: the holes on the powder filling plate are aligned with the cone holes on the powder filling plate cover, the powder enters the mold through these holes, and the powder is filled by vibration, gravity, and mold lifting.

[0004] Although the existing fixed volume powder filling machine can complete the powder filling task to a certain extent, it has some obvious shortcomings, which makes it unable to meet the higher requirements of modern inductor production for powder filling accuracy and consistency: Uneven powder filling: Existing powder filling equipment relies on the gravity flow and vibration of powder materials. The fluidity of powder is greatly affected by the characteristics of powder materials (such as particle size, humidity, electrostatic adsorption, etc.), resulting in uneven powder filling between different mold holes. In multi-hole molds, powder often flows unevenly due to differences in physical properties, making it difficult to ensure the consistency of powder in each hole, thus affecting the accuracy of hot pressing packaging.

[0005] Powder residue problem: The hole wall in the existing equipment is easy to be adsorbed by powder. Due to factors such as static electricity, hot melt adhesive components of powder materials, roughness of hole wall and equipment excitation, powder may remain on the hole wall, resulting in incomplete powder filling. The residual powder not only affects the accuracy of the powder filling amount, but also causes contamination to the product in subsequent processes.

[0006] The powder filling amount is difficult to adjust: The powder filling amount of traditional powder filling equipment is determined by the volume of the powder filling plate hole. Once the production process needs to adjust the powder filling amount, the powder filling plate and related accessories must be disassembled and replaced. This not only increases the production downtime, but also reduces the flexibility and adaptability of the equipment. Summary of the invention

[0007] The main purpose of the present invention is to provide an induction hot pressing precision powder filling machine and a powder filling method thereof, aiming to improve the uniformity of powder filling, reduce powder residue, and effectively control the powder filling amount.

[0008] To achieve the above-mentioned purpose, the inductive hot pressing precision powder filling machine proposed by the present invention comprises: frame; A cold pressing mechanism, the cold pressing mechanism is connected to the frame, the cold pressing mechanism comprises an upper punching structure and a lower punching structure which are arranged vertically opposite to each other, and a pressing space is provided between the upper punching structure and the lower punching structure; A cold pressing mold core, the cold pressing mold core is arranged in the pressing space, the cold pressing mold core comprises a prefabricated block mother mold, the upper punching structure is located above the prefabricated block mother mold, the lower punching structure is located below the prefabricated block mother mold, and the prefabricated block mother mold is slidably connected with a hot pressing template; A powder feeding mechanism is connected to one side of the cold pressing mold core and is used to fill powder into the prefabricated block mother mold.

[0009] In a possible embodiment, the upper punching structure includes an upper driving member and an upper punch connected to the upper driving member, and the lower punching structure includes two lower driving members and two lower punches respectively connected to the two driving members, the upper punch is located above the prefabricated block mold, and is used to push or press the prefabricated block mold, and the lower punch is located below the prefabricated block mold, and is used to support or press the prefabricated block mold.

[0010] In a possible implementation manner, the cold pressing mold core further includes: A mounting plate, wherein a first positioning track is arranged above the mounting plate, the prefabricated block female mold is slidably connected in the first positioning track, and a second positioning track is arranged below the mounting plate, the hot pressing template is slidably connected in the second positioning track; A switching cylinder is connected to the mounting plate and drives the prefabricated block mother mold.

[0011] In a possible implementation manner, a plurality of limiting holes are further provided at the bottom of the mounting plate for the lower punch to pass through.

[0012] In a possible implementation manner, the prefabricated block mold has a plurality of forming holes, and the upper and lower ends of the forming holes are circular structures of different sizes and are connected by an inclined surface or a curved surface.

[0013] In a possible implementation, the powder feeding mechanism includes: A powder feeding motor module, the powder feeding motor module is connected to the frame; A powder box, the powder box is drivingly connected to the powder feeding motor module, and the powder box is used to contain powder; A vibrator is abutted against the outer wall of the powder box and is used to make the powder in the powder box fall into the prefabricated block mold.

[0014] To achieve the above object, the present invention further provides a powder filling method for an inductive hot pressing precision powder filling machine, which is applied to the inductive hot pressing precision powder filling machine described in any possible embodiment above, and comprises the following steps: The powder feeding mechanism conveys the powder in the powder box to the prefabricated block mold through the cooperation of the vibration of the vibrator and the gravity of the powder; The lower punch cooperates with the prefabricated block mother mold to evenly fill the powder into the forming hole by gravity and vibration; The upper punch presses down, cooperating with the lower punch to compact the powder into shape; The upper punch is lifted, the lower punch is retracted, and the switching cylinder drives the prefabricated block mother mold to move backward to seal the prefabricated block; The hot pressing template enters the second positioning track, the switching cylinder is reset, and the upper punch presses down to push the prefabricated block into the hot pressing template; The hot pressing template is pulled out, and the upper punch and the lower punch are reset.

[0015] The technical solution of the present invention adopts the precise cooperation of the upper punch and the lower punch of the cold pressing mechanism, so that the powder can be evenly filled into the cold pressing die cavity, ensuring the consistency of the powder filling amount, avoiding the situation of too much or too little powder, improving the consistency of the physical properties of the product, and ensuring the quality of the product after hot pressing; the powder is completely pushed by the punch during the entire filling process, without involving adsorption or residue problems, avoiding the adhesion of the powder to the equipment, and ensuring the cleanliness of the filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the induction hot pressing precision powder filling machine of the present invention; Figure 2 for Figure 1 Sectional view at AA in the middle; Figure 3 It is a structural schematic diagram of another perspective of an embodiment of the induction hot pressing precision powder filling machine of the present invention; Figure 4 It is a structural schematic diagram of an embodiment of a cold pressing mold core of the present invention; Figure 5It is a structural schematic diagram of an embodiment of a powder feeding mechanism of the present invention.

[0018] Description of Figure Numbers: 10. Frame; 20. Cold pressing mechanism; 21. Upper punching structure; 211. Upper driving member; 212. Upper punch; 22. Lower punching structure; 221. Lower driving member; 222. Lower punch; 23. Pressing space; 30. Cold pressing mold core; 31. Prefabricated block mother mold; 311. Forming hole; 32. Mounting plate; 321. First positioning rail; 322. Second positioning rail; 33. Switching cylinder; 40. Powder feeding mechanism; 41. Powder feeding motor module; 42. Powder box; 43. Vibrator.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] In view of the problems in the background technology, the induction hot pressing precision powder filling machine proposed by the present invention comprises: Rack 10; A cold pressing mechanism 20, the cold pressing mechanism 20 is connected to the frame 10, the cold pressing mechanism 20 comprises an upper punching structure 21 and a lower punching structure 22 which are arranged vertically opposite to each other, and a pressing space 23 is provided between the upper punching structure 21 and the lower punching structure 22; A cold pressing mold core 30, wherein the cold pressing mold core 30 is arranged in the pressing space 23, and the cold pressing mold core 30 comprises a prefabricated block mother mold 31, wherein the upper punching structure 21 is located above the prefabricated block mother mold 31, and the lower punching structure 22 is located below the prefabricated block mother mold 31, and the prefabricated block mother mold 31 is slidably connected with a hot pressing template; A powder feeding mechanism 40 is connected to one side of the cold pressing mold core 30 and is used to fill powder into the prefabricated block mother mold 31 .

[0022] Combined with reference Figures 1 to 5As shown, in this embodiment, the frame 10 is the supporting skeleton of the entire powder filling machine, which is usually made of metal materials (such as steel or aluminum alloy) and has sufficient rigidity and stability to carry other components and transmit mechanical effects. The upper punch structure 21 and the lower punch structure 22 are respectively located on the upper and lower sides of the cold pressing mold core 30, and they are the core working parts of the cold press. The upper punch structure 21 usually includes a punch that can move vertically, and its function is to apply pressure to press the powder into shape. The lower punch structure 22 is similar, and is usually a punch that can move vertically, which is used for reaction force or auxiliary molding. The upper punch 212 and the lower punch 222 can be precisely controlled by a servo drive system to ensure that the pressure applied each time is uniform and adjustable. The pressing space 23 between the upper punch structure 21 and the lower punch structure 22 is used to place the prefabricated block mother mold 31, and the powder is compacted and molded by the pressure of these punches. During the cold pressing process, the powder is compressed and filled into the mother mold, and the powder block after molding is the prefabricated block. The prefabricated block master mold 31 is the core component in the cold pressing mold core 30, and its design directly determines the shape and size of the prefabricated block. Usually, the master mold is a mold with a cavity, and the powder will be cold pressed into the shape of the prefabricated block after filling. The sliding connection between the hot pressing template and the prefabricated block master mold 31 allows the hot pressing template to smoothly enter the mold core after cold pressing. The hot pressing template is a key component in the subsequent hot pressing process to ensure that the shape of the prefabricated block does not change during the hot pressing process. The sliding connection can be achieved by designing a guide rail or a slider to ensure the docking accuracy between the hot pressing template and the master mold. The powder feeding mechanism 40 is used to accurately fill the powder into the prefabricated block master mold 31. Usually, the powder feeding mechanism 40 will include a vibration system, a conveying device (such as a screw conveyor, air flow conveying, etc.) and a powder storage device. The vibration system can help the powder to be evenly distributed in the master mold cavity to avoid powder accumulation or vacancy problems. The powder feeding mechanism 40 is connected to one side of the cold pressing mold core 30 so that the powder can be directly fed into the prefabricated block master mold 31. After filling, the cold pressing process begins, the punch presses down and compacts the powder, and the formed prefabricated block is sent to the next step. The powder feeding mechanism 40 needs to be adjusted according to the characteristics of the powder (such as particle size, fluidity, etc.). For example, if the powder has poor fluidity, a vibration table or an air conveying system can be used to assist in powder feeding. If the powder has larger particles, a screw conveyor or other mechanical transmission system may be required.

[0023] The present application adopts the precise coordination of the upper punch 212 and the lower punch 222 of the cold pressing mechanism 20, so that the powder can be evenly filled into the cold pressing die cavity, ensuring the consistency of the powder filling amount, avoiding the situation of too much or too little powder, improving the consistency of the physical properties of the product, and ensuring the quality of the product after hot pressing; the powder is completely pushed by the punch during the entire filling process, and there is no adsorption or residue problem, which avoids the adhesion of the powder to the equipment and ensures the cleanliness of the filling process.

[0024] In a possible embodiment, the upper punching structure 21 includes an upper driving member 211 and an upper punch 212 connected to the upper driving member 211, and the lower punching structure 22 includes two lower driving members 221 and two lower punches 222 respectively connected to the two driving members, the upper punch 212 is located above the prefabricated block mold 31, and is used to push or press the prefabricated block mold 31, and the lower punch 222 is located below the prefabricated block mold 31, and is used to support or press the prefabricated block mold 31.

[0025] Combined with reference Figure 1 and Figure 2As shown, in this embodiment, the upper driving member 211 is a component for driving the upper punch 212 to move longitudinally. It can be a motor drive, a hydraulic cylinder or a pneumatic cylinder, etc., which can provide sufficient power to enable the upper punch 212 to move up and down accurately. The function of the upper driving member 211 is to apply pressure or push the prefabricated block mother mold 31 during the cold pressing process by controlling the movement of the upper punch 212. The upper punch 212 is located above the prefabricated block mother mold 31, and is usually a fixed or adjustable component, which moves up and down under the control of the upper driving member 211. The function of the upper punch 212 is to push or press the prefabricated block mother mold 31 during the downward pressing stage of the cold pressing process, so that the powder can be compacted after filling, and plays a key role in the process of forming the prefabricated block. The upper punch 212 can have different shapes and sizes to meet the requirements of different types of prefabricated block forming. The two lower driving members 221 are respectively located on both sides of the cold pressing mechanism 20, and are used to drive the lower punch 222 to make corresponding movements. They may be hydraulic cylinders, pneumatic cylinders or servo motors, which coordinate movement to ensure that the two lower punches 222 work symmetrically or simultaneously. The design of the two lower driving members 221 can increase the stability of the system and the uniform pressure on the prefabricated block mother mold 31. The lower punch 222 is located below the prefabricated block mother mold 31, and its function is to support the mother mold and apply pressure to the prefabricated block mother mold 31. The lower punch 222 is usually connected to the lower driving member 221, and provides pressure support to the lower part for the cold pressing process through its up and down movement. During the cold pressing process, the lower punch 222 can also play a role in fixing or adjusting the position of the mother mold. By using two lower punches 222, uniform pressure distribution can be ensured during cold pressing, deformation of the prefabricated block mother mold 31 can be avoided, and the shape accuracy of the prefabricated block can be ensured. The prefabricated block mother mold 31 is the core part of cold pressing molding, and the powder is compacted and formed into the shape of the prefabricated block in the prefabricated block mother mold 31. The upper punch 212 and the lower punch 222 apply pressure from the top and bottom respectively to ensure that the powder is fully filled and compacted into shape. The function of the upper punch 212 is to press the powder into the prefabricated block mother mold 31 by applying vertical pressure, and promote the prefabricated block to form. At this time, the movement of the upper punch 212 will ensure that the powder is evenly distributed and effectively compacted, so that the shape of the prefabricated block is more stable. The function of the lower punch 222 is mainly to support the prefabricated block mother mold 31 and provide reverse pressure to ensure that the pressure applied by the upper punch 212 does not cause the mother mold to deform or break. At the same time, the lower punch 222 can also assist in positioning the mother mold to ensure that its position does not shift during the molding process. Using two lower punches 222 can achieve more uniform pressure, avoiding deformation of the mother mold or instability of the prefabricated block caused by uneven pressure from a single punch. The double lower punch 222 provides more flexibility and stability in support and pressure.

[0026] Specifically, the punch and the lower punch 222 require a precise control system to operate synchronously. A servo motor control system can be used to monitor the pressure and displacement in real time through sensors to achieve precise molding control. Hydraulic or pneumatic systems can also achieve similar precise control, especially in scenarios where greater pressure is required. The upper drive 211 can select a hydraulic, pneumatic or electric drive system according to actual needs. If higher control accuracy is required, a servo motor system is more suitable; if large-scale production is considered, a hydraulic system usually has a higher load capacity and working stability. The design of the lower drive 221 should also match the upper drive 211 to ensure that the two punches can move synchronously during operation without pressure imbalance. The shape and size of the upper punch 212 and the lower punch 222 need to be consistent with the design of the prefabricated block master mold 31 to ensure that the applied pressure can be evenly distributed without causing damage or deformation of the mold. The precision requirements of the prefabricated block master mold 31 are high, so the surface quality and size control of the punch are also crucial.

[0027] The present application makes the pressing during the powder filling process more precise through the design of the upper punch 212 and the lower punch 222. The upper punch 212 is used to apply upward pressure, while the lower punch 222 is used to support and apply downward pressure to ensure uniform pressing of the powder, which helps to form the physical properties and consistency of the prefabricated block.

[0028] In a possible implementation manner, the cold pressing mold core 30 further includes: A mounting plate 32, a first positioning track 321 is arranged above the mounting plate 32, the prefabricated block female mold 31 is slidably connected in the first positioning track 321, a second positioning track 322 is arranged below the mounting plate 32, and the hot pressing template is slidably connected in the second positioning track 322; The switching cylinder 33 is connected to the mounting plate 32 and drives the prefabricated block mother mold 31 .

[0029] Combined with reference Figure 1 and Figure 4As shown, in this embodiment, the mounting plate 32 is used as a supporting structure to fix the various components of the cold pressing mold core 30. It provides a stable platform so that other components (such as positioning rails, prefabricated block mold 31 and hot pressing template) can be installed and moved smoothly and accurately. The mounting plate 32 is located at the bottom of the cold pressing mold core 30, and plays the role of supporting and fixing the prefabricated block mold 31 and the hot pressing template to ensure that they are accurately docked during the cold pressing molding and hot pressing process. The first positioning rail 321 is located above the mounting plate 32 and is used for sliding connection with the prefabricated block mold 31. The first positioning rail 321 ensures that the prefabricated block mold 31 can accurately move along a predetermined path during the cold pressing and hot pressing process. The first positioning rail 321 allows the prefabricated block mold 31 to slide freely without obstruction, while also ensuring the accuracy and stability of its position, avoiding displacement or offset during the cold pressing process. The second positioning rail 322 is arranged below the mounting plate 32, and is used for sliding connection with the hot pressing template. Through the guidance of the second positioning rail 322, the hot pressing template can accurately move to the hot pressing working position after the cold pressing is completed. The design and installation method of this track is similar to that of the first positioning track 321, ensuring that the hot pressing template can accurately dock with the prefabricated block mother mold 31 to avoid uneven hot pressing due to inaccurate positioning. The role of the hot pressing template in this position is to further process the formed prefabricated block mother mold 31 (prefabricated block after cold pressing) during the hot pressing process. After cold pressing, the hot pressing template guides the prefabricated block mother mold 31 to the working area of ​​the template in the hot pressing to achieve the subsequent hot pressing process. The switching cylinder 33 is used to drive and switch the position of the prefabricated block mother mold 31 so that it can be smoothly switched during the cold pressing and hot pressing processes. The switching cylinder 33 drives the prefabricated block mother mold 31 to move forward and backward to ensure that the mother mold can be positioned to the corresponding position of the hot pressing template after cold pressing so as to start hot pressing. The switching cylinder 33 is usually controlled by air pressure and has fast and accurate operating characteristics. Its function is to accurately move the prefabricated block mother mold 31 to the hot pressing template position after cold pressing is completed to ensure the smooth progress of the hot pressing process.

[0030] In the present application, by setting a first positioning track 321 and a second positioning track 322, the positioning of the prefabricated block mother mold 31 and the hot pressing template during the cold pressing process is more precise, and the prefabricated block mother mold 31 and the hot pressing template can effectively cooperate with each other to avoid the error caused by the instability of the core structure; the switching cylinder 33 can drive the prefabricated block mother mold 31 to move, which is convenient for operations in different working stages, ensures smooth conversion during the powder filling process, and improves the flexibility of operation and the automation level of the equipment.

[0031] In a possible implementation manner, a plurality of limiting holes (not shown) are further provided at the bottom of the mounting plate 32 for the lower punch 222 to pass through.

[0032] In this embodiment, a plurality of limiting holes are provided at the bottom of the mounting plate 32, the main purpose of which is to provide a path for the lower punch 222 to pass through. These limiting holes ensure that the lower punch 222 can be accurately positioned during the movement, and limit its excessive movement to avoid interference with other components. The number and position of the limiting holes can be designed according to actual needs, and are usually set according to the size and stroke of the lower punch 222. Parameters such as the diameter and depth of the hole need to be accurately calculated to ensure that the lower punch 222 can pass smoothly without causing jamming or other interference. The lower punch 222 is located below the cold pressing die core 30, and plays a role in supporting or applying pressure to the prefabricated block mother mold 31. The lower punch 222 is usually controlled by a driving member to move up and down, and applies pressure upward or downward during the cold pressing process. The limiting holes provide a precise guide path for the lower punch 222 to ensure its stability during the pressing process. Through these limiting holes, the lower punch 222 can be prevented from deviating from the predetermined motion trajectory, ensuring the precise fit of the lower punch 222 with the prefabricated block mother mold 31. The setting of the limiting hole is not only to allow the lower punch 222 to pass through, but more importantly, it can play a positioning role during the movement of the lower punch 222. Through the cooperation of the limiting hole, it is ensured that the lower punch 222 can move and position according to the predetermined path in different process steps, thereby ensuring the uniformity and stability of the pressing force during the cold pressing process.

[0033] The present application provides a stable support for the lower punch 222 by setting a plurality of limiting holes at the bottom of the mounting plate 32, thereby preventing the lower punch 222 from being displaced or deformed during the pressing process, thereby improving the accuracy and stability of the equipment.

[0034] In a possible implementation manner, the prefabricated block matrix 31 has a plurality of forming holes 311 , and the upper and lower ends of the forming holes 311 are circular structures of different sizes and are connected by an inclined surface or a curved surface.

[0035] In this embodiment, the forming hole 311 refers to the channel opened in the prefabricated block mother mold 31. The shape, size and structure of these holes determine the geometric shape and size of the final molded block. The prefabricated block mother mold 31 is usually used in the cold pressing process to fill the powder and form a preliminary prefabricated block, and the forming hole 311 is the key to controlling and shaping the shape of the prefabricated block. These forming holes 311 control the final shape of the powder by guiding the powder to enter and solidify the shape. The design of the hole has an important influence on the filling of the powder, the accuracy of the molding and the mechanical properties of the prefabricated block. The upper and lower ends of the forming hole 311 are circular and different in size, indicating that the shape of the hole is not uniform, but has different diameters at the top and bottom. The circular structure of the upper and lower ends enables the forming hole 311 to guide the powder to flow under different pressures and finally form a shape that meets the requirements. The larger upper end may facilitate the filling of the powder, while the smaller lower end helps to compress the powder and maintain structural stability. When the upper and lower circular ports are connected by a bevel, the hole wall will form an angle, which helps the powder flow better, reduces the blockage of the powder, and avoids uneven pressure during the molding process. If a curved surface connection is used, the curve of the hole wall will make the powder obtain a more uniform pressure distribution during filling, which helps to avoid insufficient or excessive powder in corners or edges. The curved surface connection design can better guide the powder flow and ensure the uniform distribution of materials during the molding process.

[0036] The present application designs multiple forming holes 311 in the prefabricated block mother mold 31, and the upper and lower ends thereof are circular structures of different sizes. The distribution ratio of the powder can be adjusted according to actual needs, especially the powder ratio in the middle and around the hat-shaped prefabricated block, so as to meet the special requirements of the hot pressing process for powder distribution.

[0037] In a possible implementation, the powder feeding mechanism 40 includes: A powder feeding motor module 41, wherein the powder feeding motor module 41 is connected to the frame 10; A powder box 42, wherein the powder box 42 is drivingly connected to the powder feeding motor module 41, and the powder box 42 is used for containing powder; A vibrator 43 is in contact with an outer wall of the powder box 42 and is used to make the powder in the powder box 42 fall into the prefabricated block matrix 31 .

[0038] Combined with reference Figure 5As shown, in this embodiment, the powder feeding motor module 41 is a key component that drives the entire powder feeding process, and generally includes a motor, a transmission device (such as gears, belts, etc.) and an electronic control system. Its main function is to drive the powder box 42 to transport materials, ensuring that the powder can be fed into the prefabricated block mother mold 31 in an orderly manner under control. By adjusting the speed and working time of the powder feeding motor, the filling amount and speed of the powder can be accurately controlled. The powder feeding motor module 41 is usually connected to the gear or transmission belt through a motor to accurately drive the movement of the powder box 42, thereby achieving accurate feeding of the powder. The powder box 42 is a container or storage bin for storing and conveying powder. The internal design of the powder box 42 generally needs to prevent the powder from agglomerating and ensure that the powder can be released evenly and stably. The main function of the powder box 42 is to store the fed powder and to deliver the powder to the prefabricated block mother mold 31 through the drive of the powder feeding motor module 41. The design of the powder box 42 needs to ensure that the powder will not agglomerate during storage and can be easily discharged through vibration or other mechanisms. The powder box 42 is connected to the powder feeding motor module 41 through a driving device. Usually, a discharge port is designed at the bottom of the powder box 42 to ensure that the powder can fall smoothly into the mother mold. The vibrator 43 is an external device, usually composed of a motor and a vibration system. The vibrator 43 generates high-frequency vibration to make the powder flow and fall in the powder box 42. The function of the vibrator 43 is to loosen the powder in the powder box 42 and flow out smoothly through vibration, ensuring that the powder can be evenly filled into the prefabricated block mother mold 31. Vibration can effectively prevent the powder from agglomerating or clogging, thereby ensuring the uniformity and fluidity of the powder. The vibrator 43 generates vibration by contacting with the outer wall of the powder box 42. Different methods such as electric vibrators 43 and pneumatic vibrators 43 can be used. Electric vibrators 43 are common in this type of equipment. They generate vibrations by driving an eccentric shaft or a vibration plate by a motor.

[0039] The present application makes powder delivery more accurate through the driving connection between the powder feeding motor module 41 and the powder box 42. The addition of the vibrator 43 effectively ensures that the powder falls evenly into the prefabricated block mother mold 31, avoiding quality problems caused by uneven powder.

[0040] The present invention further provides a powder filling method for an inductive hot pressing precision powder filling machine, which is applied to the inductive hot pressing precision powder filling machine as described in any of the above embodiments, and comprises the following steps: The powder feeding mechanism conveys the powder in the powder box to the prefabricated block mold through the cooperation of the vibration of the vibrator and the gravity of the powder; The lower punch cooperates with the prefabricated block mother mold to evenly fill the powder into the forming hole by gravity and vibration; The upper punch presses down, cooperating with the lower punch to compact the powder into shape; The upper punch is lifted, the lower punch is retracted, and the switching cylinder drives the prefabricated block mother mold to move backward to seal the prefabricated block; The hot pressing template enters the second positioning track, the switching cylinder is reset, and the upper punch presses down to push the prefabricated block into the hot pressing template; The hot pressing template is pulled out, and the upper punch and the lower punch are reset.

[0041] In this embodiment, first, the powder feeding mechanism (including the powder box and the vibrator) starts working. The vibrator helps the powder to flow in the powder box by generating vibration, and at the same time uses gravity to gradually transport the powder to the prefabricated block mother mold. The vibration of the vibrator ensures that the powder falls smoothly and enters the mother mold evenly. Then, the lower punch cooperates with the forming hole of the prefabricated block mother mold, and uses gravity and vibration to evenly fill the powder into the forming hole of the mother mold. This process ensures that the powder is evenly distributed and avoids concentrated or uneven filling of the powder. Then, the upper punch starts to press down, cooperates with the lower punch, and applies pressure to the filled powder to compact it into shape. This process helps to form a compact prefabricated block to ensure that the powder will not spread out during the subsequent hot pressing process. Then, the upper punch is lifted, the lower punch retreats, and the prefabricated block mother mold moves backward by switching the drive of the cylinder, thereby sealing the formed prefabricated block. This step ensures the stability of the prefabricated block after cold pressing and prepares for the subsequent hot pressing process. Next, the hot pressing template enters the second positioning track and the switching cylinder is reset. At this time, the upper punch is pressed down again to push the sealed prefabricated block into the hot pressing template, ready for hot pressing. This step ensures that the prefabricated block can smoothly enter the hot pressing template and receive appropriate pressure and temperature during the hot pressing process. Finally, after the hot pressing process is completed, the hot pressing template is pulled out, and the upper and lower punches are reset to prepare for the next operation cycle. This step completes a complete process of powder filling, pressing and hot pressing.

[0042] The present application uses the vibration of the vibrator and the gravity of the powder to evenly transport the powder into the prefabricated block mold, and presses the powder by applying pressure from the punch, thereby ensuring the uniformity and density of the filling and meeting the requirements of the hot pressing process; the prefabricated block mold can be flexibly moved back to seal the prefabricated block under the action of the switching cylinder, ensuring that the powder does not overflow after filling, and when the hot pressing template enters, the prefabricated block can be accurately transferred to the hot pressing middle template, avoiding the problems of powder leakage and powder retention, and improving the overall production accuracy; the entire prefabricated block is directly put into the hole of the middle template, avoiding the scattering or retention of powder between processes, ensuring the integrity of the filling process and the consistency of each molding.

[0043] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An inductive hot pressing precision powder filling machine, characterized in that: include: frame; A cold pressing mechanism, the cold pressing mechanism is connected to the frame, the cold pressing mechanism comprises an upper punching structure and a lower punching structure which are arranged vertically opposite to each other, and a pressing space is provided between the upper punching structure and the lower punching structure; A cold pressing mold core, the cold pressing mold core is arranged in the pressing space, the cold pressing mold core comprises a prefabricated block mother mold, the upper punching structure is located above the prefabricated block mother mold, the lower punching structure is located below the prefabricated block mother mold, and the prefabricated block mother mold is slidably connected with a hot pressing template; A powder feeding mechanism is connected to one side of the cold pressing mold core and is used to fill powder into the prefabricated block mother mold.

2. The induction hot pressing precision powder filling machine according to claim 1, characterized in that: The upper punching structure includes an upper driving member and an upper punch connected to the upper driving member, and the lower punching structure includes two lower driving members and two lower punches respectively connected to the two driving members. The upper punch is located above the prefabricated block mold and is used to push or press the prefabricated block mold. The lower punch is located below the prefabricated block mold and is used to support or press the prefabricated block mold.

3. The induction hot pressing precision powder filling machine according to claim 2, characterized in that: The cold pressing mold core also includes: A mounting plate, wherein a first positioning track is arranged above the mounting plate, the prefabricated block female mold is slidably connected in the first positioning track, and a second positioning track is arranged below the mounting plate, the hot pressing template is slidably connected in the second positioning track; A switching cylinder is connected to the mounting plate and drives the prefabricated block mother mold.

4. The inductive hot pressing precision powder filling machine according to claim 3, characterized in that: The bottom of the mounting plate is also provided with a plurality of limiting holes for the lower punch to pass through.

5. The induction hot pressing precision powder filling machine according to claim 3, characterized in that: The prefabricated block mother mold is provided with a plurality of forming holes, and the upper and lower ends of the forming holes are circular structures of different sizes and are connected by an inclined surface or a curved surface.

6. The inductive hot pressing precision powder filling machine according to any one of claims 1 to 5, characterized in that: The powder feeding mechanism comprises: A powder feeding motor module, the powder feeding motor module is connected to the frame; A powder box, the powder box is drivingly connected to the powder feeding motor module, and the powder box is used to contain powder; A vibrator is abutted against the outer wall of the powder box and is used to make the powder in the powder box fall into the prefabricated block mold.

7. A powder filling method for an inductive hot pressing precision powder filling machine, applied to the inductive hot pressing precision powder filling machine as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: The powder feeding mechanism conveys the powder in the powder box to the prefabricated block mold through the cooperation of the vibration of the vibrator and the gravity of the powder; The lower punch cooperates with the prefabricated block mother mold to evenly fill the powder into the forming hole by gravity and vibration; The upper punch presses down, cooperating with the lower punch to compact the powder into shape; The upper punch is lifted, the lower punch is retracted, and the switching cylinder drives the prefabricated block mother mold to move backward to seal the prefabricated block; The hot pressing template enters the second positioning track, the switching cylinder is reset, and the upper punch presses down to push the prefabricated block into the hot pressing template; The hot pressing template is pulled out, and the upper punch and the lower punch are reset.

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