Steel sample die pressing device with high-precision powder quantifying structure

Abstract

The invention relates to the technical field of intelligent equipment manufacturing, and discloses a steel sample mold pressing device with a powder high-precision quantification structure, the steel sample mold pressing device comprises a mold pressing assembly and a quantitative batching mechanism, the quantitative batching mechanism further comprises a quantitative blanking assembly adopting a two-stage cooperative strategy, in the fine quantification stage, a coarse quantification spiral rotates reversely, and the powder high-precision quantification structure is formed. Meanwhile, a grid plate is arranged in the coarse blanking barrel of the device and is matched with a material pushing assembly capable of lifting and rotating, powder caking can be effectively crushed, it is ensured that the materials are homogeneous and loose, and after coarse quantification is completed, the material is prevented from falling off. The reverse coarse screw returns the remaining materials, and the remaining materials are subjected to secondary crushing through the grid plate and then guided into the fine quantitative channel, so that seamless and homogenized transfer of the materials between stations is achieved, the powder matching accuracy and batch consistency are conveniently guaranteed, and a solid foundation is laid for preparing steel samples with uniform components and reliable performance.

Description

Technical Field

[0001] This invention relates to the field of intelligent equipment manufacturing technology, and in particular to a steel sample molding device with a high-precision powder quantitative structure. Background Technology

[0002] In the process of molding steel samples, the proportions of various powders must be precise. Even slight deviations can lead to errors in the sample and affect its representativeness. The precise proportions of each raw material in the sample depend on the cutting accuracy. If the cutting accuracy is insufficient, the proportional error will be directly amplified into the analytical error, ultimately making it difficult to guarantee the accuracy and repeatability of the experimental data.

[0003] In Chinese patent publication CN106825555B, this invention relates to a quantitative powder feeding device. It uses a quantitative orifice to accommodate a specific amount of powder. The volume of the quantitative orifice is adjusted by regulating the insertion depth of the quantitative rod within it, based on the actual usage of the powder. This allows for convenient modification of the powder content within the orifice, improving adaptability to the production of products requiring different powders. The orifice is filled with powder for one quantitative measurement. Afterward, the powder is aligned with a feed orifice to allow it to exit, enabling another quantitative measurement to be performed continuously. Furthermore, this invention also provides a powder forming apparatus using the aforementioned quantitative powder feeding device.

[0004] In existing technologies for molding steel samples, when the powder raw materials are proportioned, even after the drive signal stops and the spiral blades cease rotation, the remaining material in the spiral channel continues to generate an uncontrolled subsequent flow under the combined effects of its own gravity, inertia, and the cohesive force between materials. This phenomenon causes the endpoint of the actuator's action to be out of sync with the actual endpoint of material delivery, making it difficult to accurately grasp the material feeding cutoff time. This easily leads to deviations such as overfeeding or underfeeding. At the same time, some powder is prone to agglomeration due to moisture absorption, static electricity, etc. The behavior of these agglomerates during the delivery process is random. If they get stuck at the quantitative point and are not discharged, it will lead to underfeeding; if they are discharged as a whole, it will easily lead to overfeeding. This easily disrupts the repeatability and consistency of the quantitative process, causing the actual material ratio between batches to deviate from the preset theoretical value. Ultimately, this results in significant proportional errors in the chemical composition or density of the molded steel samples, which directly affects the reliability of subsequent material performance test data and the accuracy of experimental analysis conclusions. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of inaccurate feeding, which affects the accuracy of the steel powder raw material ratio and thus affects the performance of the steel sample molded into a sample. To this end, we propose a steel sample molding device with a high-precision quantitative structure for powder.

[0006] To achieve the above objectives, this application adopts the following technical solution: a steel sample molding device with a high-precision quantitative powder structure, comprising: a molding device support frame, a molding assembly installed inside the molding device support frame, the molding assembly including a hydraulic push rod, the hydraulic push rod being fixedly connected inside the molding device support frame, a molding protrusion being fixedly connected to the output end of the hydraulic push rod, a sample protrusion being provided at the bottom of the molding protrusion, the sample protrusion being fixedly connected to the inside of the molding device support frame, a molding groove being slidably connected to the outside of the sample protrusion, and an anti-overflow mechanism being sleeved on the outside of the molding protrusion, the anti-overflow mechanism being used to prevent powder from overflowing during molding;

[0007] A mixing component is installed on the side of the molding device support frame. Several quantitative dispensing mechanisms are installed on the top of the mixing component. Each quantitative dispensing mechanism includes a quantitative cylinder. A quantitative feeding component is installed at the bottom of the quantitative cylinder. The quantitative feeding component includes a hollow rod. A large rotating blade is fixedly connected to the outer wall of the hollow rod. A drive shaft is coaxially inserted inside the hollow rod. A small rotating blade is fixedly connected to the outer wall of the drive shaft. A drive component is installed at the top of the drive shaft. The drive component is used to make the drive shaft and the hollow rod rotate in opposite directions.

[0008] The large rotary blade is fitted with a coarse feed cylinder, and a mesh plate is provided on the top of the large rotary blade, which is fixedly connected to the inner wall of the coarse feed cylinder.

[0009] Preferably, the hollow rod has several feeding grooves evenly spaced on its sides, the bottom of the feeding grooves is flush with the top surface of the grid plate, the grid plate is sleeved on the outside of the hollow rod, and the grid plate and the hollow rod are rotatably connected.

[0010] Preferably, a pusher assembly is provided above the grid plate. The pusher assembly includes a screw section, which is integrated with the drive shaft, and the position of the screw section corresponds to the feed chute.

[0011] Preferably, a ball nut is installed on the outside of the screw section, and a lifting cylinder is fixedly connected to the outside of the ball nut. The lifting cylinder is slidably connected to the inner wall of the hollow rod. A dustproof sealing plate is provided on the top of the small rotating blade. The dustproof sealing plate is fixedly sleeved on the outside of the drive shaft, and the dustproof sealing plate is rotatably connected to the lifting cylinder.

[0012] Preferably, the outer wall of the lifting cylinder is integrally connected with a limiting protrusion, the limiting protrusion corresponds one-to-one with the feeding groove, and the limiting protrusion is slidably connected to the inside of the feeding groove. The top of the limiting protrusion is fixedly connected with a telescopic baffle, and the top of the telescopic baffle is fixedly connected to the inside of the feeding groove.

[0013] Preferably, a downward pressure plate is fixedly connected to the outer wall of the limiting protrusion. The plate surface of the downward pressure plate is set at an angle relative to the radial plane of the lifting cylinder, which is used to guide the powder to flow towards the lifting cylinder.

[0014] Preferably, the drive assembly includes a drive motor mounted on the top of the metering cylinder, and the output end of the drive motor is fixedly connected to the drive shaft. The drive assembly also includes a sun gear fixedly connected to the top of the drive shaft.

[0015] Preferably, the sun gear is engaged with planet gears on its side, and the outer wall of the planet gears is engaged with toothed rings, which are fixedly connected to the inner wall of the hollow rod. A support disk is provided at the bottom of the sun gear to support the planet gears.

[0016] Preferably, the molding assembly further includes an electric push rod, which is installed on the side of the molding device support frame, and the output end of the electric push rod is fixedly connected to a push box. The top of the push box has a through hole for receiving the powder discharged from the mixing component and conveying the powder to the inner cavity of the molding groove for molding.

[0017] Preferably, the anti-spill mechanism includes a spring, which is sleeved on the outside of the molded protrusion. The top end of the spring is fixedly connected to the molded protrusion, and the bottom end of the spring is fixedly connected to a splash guard, which is slidably sleeved on the outside of the molded protrusion.

[0018] The technical effects and advantages of this invention are as follows:

[0019] The steel sample molding device provided by the present invention is equipped with a quantitative feeding mechanism, which adopts a method of coarse and fine quantitative feeding in coordination. During the fine quantitative feeding stage, the large rotating plate of the coarse quantitative feeding is instructed to rotate in the opposite direction to actively counteract the overflow of material caused by gravity and inertia, thereby eliminating the overflow of material at the material feeding cutoff. Meanwhile, a grid plate is installed above to crush and homogenize the powder. Combined with a lifting and rotating downward pressure plate, it can forcibly shear and crush any powder lumps that may exist during the coarse feeding process, ensuring that the material entering the feeding channel is always in a homogeneous and loose state. After the coarse metering is completed, the reverse coarse metering rotor sends the remaining material back to the grid plate for secondary processing and then introduces it into the fine metering channel. This achieves seamless and homogeneous transfer of material between the two feeding stations, which not only improves the batching efficiency, but also fundamentally ensures the extreme accuracy of the proportion of each powder raw material and the high repeatability between batches. This lays a solid foundation for the final molded steel sample to have accurate chemical composition, uniform microstructure and stable and reliable physical and mechanical properties, and significantly improves the credibility of scientific research experimental data and the consistency of product quality. Attached Figure Description

[0020] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0021] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the entire invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the molding component of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the metering cylinder portion of the present invention;

[0025] Figure 5 This is a cross-sectional structural diagram of the quantitative feeding component of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the feeding component of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the feeding component of the present invention;

[0028] Figure 8 This is a three-dimensional structural diagram of the driving component part of the present invention.

[0029] Legend: 1. Molding device support frame; 2. Molding assembly; 3. Mixing assembly; 4. Metering cylinder; 5. Metering feeding assembly; 6. Pushing assembly; 7. Drive assembly; 8. Weighing sensor; 201. Hydraulic push rod; 202. Molding protrusion; 203. Anti-overflow mechanism; 204. Molding groove; 205. Sample protrusion; 206. Push box; 207. Electric push rod; 501. Hollow rod; 502. Large rotating blade 503. Coarse feed cylinder; 504. Drive shaft; 505. Small rotary vane; 506. Mesh plate; 507. Feed chute; 601. Lifting cylinder; 602. Limiting protrusion; 603. Downward pressing rotary plate; 604. Ball bearing nut; 605. Dustproof sealing plate; 606. Screw section; 607. Telescopic baffle; 701. Drive motor; 702. Sun gear; 703. Planetary gear; 704. Gear ring; 705. Support plate. Detailed Implementation

[0030] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0031] Reference Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a technical solution: a steel sample molding device with a high-precision quantitative powder structure, comprising: a molding device support frame 1, a molding component 2 installed inside the molding device support frame 1, the molding component 2 including a hydraulic push rod 201, the hydraulic push rod 201 being fixedly connected inside the molding device support frame 1, a molding protrusion 202 being fixedly connected to the output end of the hydraulic push rod 201, a sample protrusion 205 being provided at the bottom of the molding protrusion 202, the sample protrusion 205 being fixedly connected to the inside of the molding device support frame 1, and a molding groove 204 being slidably connected to the outside of the sample protrusion 205; the molding component 2 also includes an electric push rod 207, the electric push rod 207 being installed on the side of the molding device support frame 1, and a push box 206 being fixedly connected to the output end of the electric push rod 207, the top of the push box 206 having a through hole for receiving the powder discharged from the mixing component 3 and conveying the powder to the molding groove. The inner cavity of the groove 204 receives molding. An anti-overflow mechanism 203 is sleeved on the outside of the molding protrusion 202 to prevent powder from overflowing during molding. The anti-overflow mechanism 203 includes a spring, which is sleeved on the outside of the molding protrusion 202. The top end of the spring is fixedly connected to the molding protrusion 202, and the bottom end of the spring is fixedly connected to a splash guard, which is slidably sleeved on the outside of the molding protrusion 202. In the spring's natural state, the splash guard is slightly lower than the molding protrusion. Therefore, when the molding protrusion 202 is pressed down, the splash guard first contacts the molding groove 204, and its inner diameter is consistent with the size of the opening of the molding groove 204, just blocking the opening of the molding groove 204. When the molding protrusion 202 continues to be pressed down, at the moment when its bottom surface contacts the powder inside the molding groove 204, the powder cannot overflow due to the blockage of the splash guard, which helps to prevent powder waste and also helps to ensure the uniformity of the quality of the molded steel sample.

[0032] When preparing steel samples using molding technology, precise proportioning of various powdered raw materials is an absolute prerequisite for achieving the designed material performance and scientific research value. This is because the final sample's microstructure, chemical composition uniformity, and macroscopic physical and mechanical properties, such as hardness, strength, wear resistance, and corrosion resistance, are directly determined by the mixing ratio of different raw material powders, such as matrix iron powder, graphite, alloying elements, and lubricants. Any minute deviation in proportion will be solidified or even amplified during subsequent pressing and high-temperature sintering processes. This inaccuracy in composition not only renders the sample unrepresentative but also directly leads to distorted experimental data, causing subsequent material performance testing and analysis conclusions to lose scientific reliability and repeatability, thus rendering the entire preparation process meaningless. Therefore, precise proportioning is the cornerstone for ensuring the successful transformation from powder mixtures into high-performance homogeneous steel samples.

[0033] In existing technologies, the core problem in precisely metering various raw materials lies in the unavoidable asynchrony between the mechanical action of the actuator and the physical inertia of the material flow. Specifically, when the control system issues a stop signal, the material already at the discharge port does not stop immediately. Instead, under the coupling effect of its own gravity and inertia, an uncontrollable overshoot occurs. This uncontrolled residual discharge causes the actual discharge point to always lag behind the mechanism's stop command, resulting in a random error that is difficult to predict and compensate for. Therefore, operators cannot accurately correlate the theoretically calculated discharge amount with the actual stopping time, which easily leads to deviations such as over-discharge or under-discharge, restricting the consistency of proportioning accuracy and product quality. To solve this technical problem, this application makes the following improvements:

[0034] Please see Figure 1 , Figure 5 and Figure 8As shown, a mixing component 3 is installed on the side of the molding device support frame 1. Several quantitative dispensing mechanisms are installed on the top of the mixing component 3. The quantitative dispensing mechanism includes a quantitative cylinder 4. A quantitative feeding component 5 is installed at the bottom of the quantitative cylinder 4. The quantitative feeding component 5 includes a hollow rod 501. A large rotating blade 502 is fixedly connected to the outer wall of the hollow rod 501. A drive shaft 504 is coaxially inserted inside the hollow rod 501. A small rotating blade 505 is fixedly connected to the outer wall of the drive shaft 504. Several feeding slots 507 are equally spaced on the side of the hollow rod 501. A drive component 7 is installed at the top of the drive shaft 504. The drive component 7 is used to drive the drive shaft 504. Rotating in the opposite direction to the hollow rod 501, the drive assembly 7 includes a drive motor 701, which is mounted on the top of the metering cylinder 4 and its output end is fixedly connected to the drive shaft 504. The drive assembly 7 also includes a sun gear 702, which is fixedly connected to the top of the drive shaft 504. Planet gears 703 are meshed on the side of the sun gear 702, and a gear ring 704 is meshed on the outer wall of the planet gears 703. The gear ring 704 is fixedly connected to the inner wall of the hollow rod 501. A support disk 705 is provided at the bottom of the sun gear 702 to support the planet gears 703.

[0035] When the sun gear 702 rotates clockwise, the planet gear 703 is externally meshed with it, so the planet gear 703 rotates in the opposite direction to the sun gear 702. Furthermore, since the gear ring 704 is internally meshed with the planet gear 703, the gear ring 704 also maintains the same rotation direction as the planet gear 703. Thus, the gear ring 704 and the sun gear 702 can maintain opposite rotation directions, thereby driving the hollow rod 501 and the drive shaft 504 to rotate in opposite directions.

[0036] During the initial feeding, the hollow rod 501 and the large rotary blade 502 are rotated in the forward direction under the driving action of the drive component 7, which plays the role of feeding. Due to their large diameter and pitch, their feeding capacity and feeding speed are strong, and the function of coarse metering is initially completed. When the feeding amount is close to the metering amount, if it continues to feed, the final node will be difficult to control due to the large feeding amount per unit time. Therefore, at this time, the drive component 7 changes the driving direction, so that the drive shaft 504 starts to rotate in the forward direction. Due to its small diameter and pitch, the feeding amount is easier to control, thereby making up the remaining feeding amount and playing the role of fine metering. At the same time as the drive shaft 504 and the small rotary blade 505 start to rotate in the forward direction to feed, the hollow rod 501 and the large rotary blade 502 start to rotate in the reverse direction. The reverse rotation is used to rotate the material above the large rotary blade 502 upward, which counteracts the tendency of it to continue to move downward due to gravity and inertia, and prevents it from feeding too much.

[0037] The large-pitch, large-diameter hollow rod 501 and large vane 502 perform rapid coarse metering, significantly improving initial feeding efficiency. Subsequently, the system switches to a small-pitch, small-diameter vane 505 for precise metering and replenishment. Leveraging its smaller feed rate per unit rotation and higher control resolution, this greatly enhances the metering accuracy in the final stage. Simultaneously, during the fine metering stage, the large vane 502 is instructed to rotate in the opposite direction. This key design actively counteracts any overflow that might occur due to material gravity and inertia, eliminating the primary risk of overfeeding after the coarse metering mechanism stops. Through division of labor and dynamic compensation, a balance between efficiency, accuracy, and stability in the feeding process is achieved, ultimately ensuring high precision and repeatability of the proportioning results.

[0038] Some powders are prone to agglomeration due to moisture absorption, static electricity, etc. These agglomerates differ significantly from normal loose powders in physical properties and exhibit highly random behavior. On the one hand, they may be too large and form bridging or blockages in the feed inlet or spiral channel, interrupting material flow and resulting in insufficient actual feed quantity for that batch. On the other hand, agglomerates adhering to the pipe wall or blades may suddenly detach entirely under external vibration or mechanical disturbance, causing a pulse-like feed that far exceeds expectations, leading to excessive feed quantity. This unpredictable random fluctuation of overfeeding or underfeeding can easily lead to deviations in feed accuracy, making it impossible to guarantee the consistency of the molding sample ratio. To solve this technical problem, this application has made the following further improvements:

[0039] Please see Figure 4 , Figure 6 and Figure 7As shown, a coarse feed cylinder 503 is sleeved on the outside of the large rotary blade 502. A mesh plate 506 is provided on the top of the large rotary blade 502 and is fixedly connected to the inner wall of the coarse feed cylinder 503. The bottom end of the feed chute 507 is flush with the top surface of the mesh plate 506. The mesh plate 506 is sleeved on the outside of the hollow rod 501 and is rotatably connected to the hollow rod 501. A pusher assembly 6 is provided above the mesh plate 506. The pusher assembly 6 includes a screw section 606, which is integrated with the drive shaft 504. The position of the screw section 606 corresponds to the feed chute 507. A ball nut 604 is installed on the outside of the screw section 606. A lifting cylinder 601 is fixedly connected to the outside of the ball nut 604 and is slidably connected to the hollow rod 501. The inner wall of the shaft is provided with a dustproof sealing plate 605 on the top of the small rotating blade 505. The dustproof sealing plate 605 is fixedly sleeved on the outside of the drive shaft 504 and is rotatably connected to the lifting cylinder 601. The outer wall of the lifting cylinder 601 is integrally connected with a limiting protrusion 602. The limiting protrusion 602 corresponds one-to-one with the feeding groove 507 and is slidably connected to the inside of the feeding groove 507. The top of the limiting protrusion 602 is fixedly connected with a telescopic baffle 607 and the top of the telescopic baffle 607 is fixedly connected to the inside of the feeding groove 507. The outer wall of the limiting protrusion 602 is fixedly connected with a downward rotating plate 603. The plate surface of the downward rotating plate 603 is set at an angle relative to the radial plane of the lifting cylinder 601 to guide the powder to flow towards the lifting cylinder 601.

[0040] When the large rotary vane 502 rotates forward to perform its feeding function, the screw section 606 is also rotating forward, rotating the material downward. Under the driving action of the screw section 606 and the ball nut 604, the downward pressure rotary plate 603 rotates and moves downward, further pushing the material below it, similar to a piston pushing the material downward. This pushes the material below through the mesh of the grid plate 506 and into the coarse feeding cylinder 503 to receive the feed. Powdered materials can fall smoothly through the mesh. At the same time, the grid lines of the grid plate 506 also have a dividing effect on the agglomerated material, which can crush the agglomerated material, thus ensuring that the material entering the coarse feeding cylinder 503 is in a loose state.

[0041] When the coarse feeding is finished and the large rotary vane 502 starts to reverse, the reversing large rotary vane 502 has an upward conveying effect on the material inside the coarse feeding cylinder 503, thereby pushing the material inside it upward again, so that it passes through the mesh and reaches the top of the grid plate 506. At this time, the downward pressure rotary plate 603 is also in a reverse state. The reversed downward pressure rotary plate 603 can take away the material that was originally located above the grid plate 506. At the same time, the pushing component 6 rises, and the feeding chute 507 is in an open state. The material that has been divided and broken by the grid plate 506 will gradually enter the interior of the lifting cylinder 601 through the feeding chute 507, and be conveyed downward by the small rotary vane 505, which is in a forward state at this time, for precise metering.

[0042] The powerful shearing force generated by the rotating and pressing down of the upper pusher component 6 can effectively break up agglomerated materials when passing through the grid plate 506, ensuring that the materials entering the coarse feed cylinder 503 are homogeneous and loose from the source, laying a reliable foundation for coarse metering. Moreover, the reversing action of the large rotary vane 502 after completing the coarse feeding not only effectively eliminates the risk of material overrushing in the coarse feed cylinder 503, but also pushes the remaining material upward, allowing it to pass through the grid plate 506 again for secondary crushing and screening, and then introduces it into the inlet of the hollow rod 501. This process achieves double protection against residual agglomerates, and at the same time completes the seamless and homogeneous transfer of materials from the coarse metering station to the fine metering station, thereby ensuring the consistency of materials throughout the entire process from coarse metering to fine metering, and ultimately significantly improving the accuracy and stability of the proportioning.

[0043] Working principle: Each drive component 7 is used to proportion various powder raw materials. First, the drive component 7 drives the drive shaft 504 to reverse the small rotary vane 505. At this time, the hollow rod 501 and the large rotary vane 502 are in the forward rotation state. The large rotary vane 502 has a larger feed volume and is used for coarse metering. At the same time, under the cooperation of the screw section 606 and the ball nut 604, the lifting cylinder 601 and the lowering rotary plate 603 slide downward along the feed chute 507. Because the limiting protrusion 602 is stuck inside the feed chute 507, the lifting cylinder 601 and the lowering rotary plate 603 can only rotate with the lifting cylinder 601. The lowering rotary plate 603 moves downward while rotating forward, thereby generating a downward driving force on the material inside the metering cylinder 4, causing it to pass through the grid plate 506 and enter the coarse feed cylinder 503. Under the action of the large rotary vane 502... The material is fed into the mixing component 3 for coarse feeding. When it approaches the quantitative mark, the drive component 7 starts to drive the drive shaft 504 to rotate forward with the small vane 505. At this time, the hollow rod 501 and the large vane 502 are adjusted to the reverse state to adjust the movement state of the large vane 502 in time, rotating the material above it upward to prevent it from continuing to fall under the action of gravity and inertia, thus preventing excessive feeding. The reversed large vane 502 generates an upward thrust on the material, allowing it to pass through the mesh of the grid plate 506 and reach the top of the grid plate 506. At this time, the ball nut 604 moves the lifting cylinder 601 and the downward pressing plate 603 upward. The lower section of the feed chute 507 is in an open state, allowing the material conveyed by the large vane 502 to enter the interior of the hollow rod 501 through the feed chute 507 and continue to be conveyed downward by the small vane 505, completing the fine feeding.

[0044] A weighing sensor 8 is installed at the bottom of the drive assembly 7 to control the feeding amount by weighing. Various powder raw materials are quantitatively fed into the mixing assembly 3 through the drive assembly 7, where they are stirred. The mixed material is then fed into the pusher box 206. At the same time, the electric push rod 207 drives the pusher box 206 to slide forward above the molding groove 204. Under its own gravity, the powder is poured into the molding groove 204. Then, the electric push rod 207 drives the pusher box 206 to retract, while the hydraulic push rod 201 drives the mold... As the pressing protrusion 202 presses down, the anti-overflow mechanism 203 moves downward along with it. The splash guard in the anti-overflow mechanism 203 first contacts the top surface of the molding groove 204 and surrounds the opening at the top of the molding groove 204. Then the pressing protrusion 202 continues to press down, extending into the molding groove 204 to compress the powder inside. After the powder is formed, the pressing protrusion 202 rises while the molding groove 204 descends. At this time, the sample model located above the sample protrusion 205 can be removed from the molding groove 204.

[0045] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A steel sample sheet molding device having a powder high-precision dosing structure, characterized by, The mould pressing device support frame is internally provided with a mould pressing assembly, the mould pressing assembly comprises a hydraulic push rod, and the hydraulic push rod is fixedly connected to the inside of the mould pressing device support frame, the output end of the hydraulic push rod is fixedly connected with a mould pressing protrusion, and the bottom of the mould pressing protrusion is provided with a sample protrusion, the sample protrusion is fixedly connected to the inside of the mould pressing device support frame, and the outside of the sample protrusion is slidably connected with a mould pressing groove, the outside of the mould pressing protrusion is provided with an anti-overflow mechanism, and the anti-overflow mechanism is used for preventing powder overflow during mould pressing; The mixing assembly is installed on the side of the mould pressing device support frame, a plurality of quantitative feeding mechanisms are installed on the top of the mixing assembly, the quantitative feeding mechanism comprises a quantitative cylinder, the bottom of the quantitative cylinder is provided with a quantitative discharging assembly, the quantitative discharging assembly comprises a hollow rod, the outer wall of the hollow rod is fixedly connected with a large rotating piece, a driving shaft is coaxially inserted into the inside of the hollow rod, the outer wall of the driving shaft is fixedly connected with a small rotating piece, and the top end of the driving shaft is provided with a driving assembly. The outside of the large rotating piece is provided with a coarse discharging cylinder, and the top of the large rotating piece is provided with a grid plate, and the grid plate is fixedly connected to the inner wall of the coarse discharging cylinder.

2. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 1, characterized by: A plurality of feeding grooves are equidistantly arranged on the side of the hollow rod, the bottom end of the feeding groove is flush with the top surface of the grid plate, the grid plate is arranged on the outside of the hollow rod, and the grid plate is rotatably connected with the hollow rod.

3. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 1, characterized by: A pushing assembly is arranged above the grid plate, the pushing assembly comprises a screw rod section, the screw rod section is integrally arranged with the driving shaft, and the position of the screw rod section corresponds to the feeding groove.

4. The steel sample die press device having a powder high-precision quantification structure according to claim 3, characterized in that: A ball nut is arranged on the outside of the screw rod section, the outside of the ball nut is fixedly connected with a lifting cylinder, the lifting cylinder is slidably connected to the inner wall of the hollow rod, the top of the small rotating piece is provided with a dust sealing piece, the dust sealing piece is fixedly arranged on the outside of the driving shaft, and the dust sealing piece is rotatably connected with the lifting cylinder.

5. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 4, characterized by: A limiting protrusion is integrally connected to the outer wall of the lifting cylinder, the limiting protrusion corresponds to the feeding groove in a one-to-one manner, and the limiting protrusion is slidably connected to the inside of the feeding groove.

6. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 5, characterized by: The top end of the limiting protrusion is fixedly connected with a telescopic baffle, and the top end of the telescopic baffle is fixedly connected to the inside of the feeding groove.

7. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 1, characterized by: The outer wall of the limiting protrusion is fixedly connected with a downward rotating plate, the plate surface of the downward rotating plate is arranged at an inclination angle relative to the radial plane of the lifting cylinder, and is used for guiding the powder to flow in the direction close to the lifting cylinder.

8. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 7, characterized by: The driving assembly comprises a driving motor, the driving motor is arranged on the top of the quantitative cylinder, and the output end of the driving motor is fixedly connected with the driving shaft, and the driving assembly further comprises a sun gear, and the sun gear is fixedly connected to the top end of the driving shaft. The side of the sun gear is engaged with a planetary gear, the outer wall of the planetary gear is engaged with a gear ring, the gear ring is fixedly connected to the inner wall of the hollow rod, the bottom of the sun gear is provided with a supporting disc, and the supporting disc is used for supporting the planetary gear.

9. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 1, characterized by: The mould pressing assembly further comprises an electric push rod, the electric push rod is installed on the side of the mould pressing device support frame, and the output end of the electric push rod is fixedly connected with a pushing box, and a through hole is formed in the top of the pushing box for receiving the powder discharged by the mixing assembly and conveying the powder into the inner cavity of the mould pressing groove.

10. The steel sample sheet molding device having a powder high-precision dosing structure according to claim 1, characterized by: The anti-overflow mechanism comprises a spring, and the spring is sleeved outside the mould pressing block, the top end of the spring is fixedly connected with the mould pressing block, and the bottom end of the spring is fixedly connected with a splash-proof cover, and the splash-proof cover is sleeved outside the mould pressing block in a sliding mode.

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