A one-in-many powder weighing device

Abstract

The application provides a one-out-multiple powder weighing device, which comprises a bin body, a powder weighing assembly, a feeding assembly and a feeding assembly. The powder weighing assembly comprises a fixed plate, a first driving part connected with the fixed plate, a plurality of weighing parts arranged on the fixed plate, a hopper suspended in a groove in the middle of the fixed plate and connected with the weighing parts, and a second driving part arranged on the hopper. The feeding assembly is arranged above the powder weighing assembly, and the feeding assembly is arranged below the powder weighing assembly. The feeding assembly comprises a feeding part, a plurality of independent hoppers arranged on the feeding part, a feeding channel, and a third driving part connected with the feeding part. The two ends of the feeding channel are respectively matched with the independent hoppers and the hopper. The first driving part is used for driving the fixed plate to move, the second driving part is used for driving the hopper to move to realize the opening and closing of the hopper, and the third driving part is used for driving the feeding part to move. The application solves the problem that there is no low-cost, high-efficiency and compact and reliable one-out-multiple powder weighing device in the prior art.

Description

Technical Field

[0001] This invention relates to the field of powder weighing technology, and in particular to a multi-powder weighing device. Background Technology

[0002] Powder molding technology is a processing method that involves placing powder in a mold and pressing the powder to form parts. It is commonly used for molding resin and metal parts. The powder weighing device is a crucial component in powder molding technology. After the powder is weighed, it enters the mold for molding, thus facilitating quality control during processing and benefiting workpiece production.

[0003] In existing powder weighing equipment, a single-channel feeding and single-hopper weighing mode is typically used, meaning one set of feeding components corresponds to one weighing hopper, and only one portion of powder can be weighed at a time. This one-to-one powder weighing device has a mature structure and simple control, and is widely used in various powder forming presses. With the continuous improvement of production efficiency requirements, the industry has also seen the emergence of multi-station powder weighing solutions that integrate multiple sets of feeding components, weighing components, and transfer components into the same equipment to achieve simultaneous weighing of multiple portions of powder.

[0004] However, such multi-station powder weighing solutions are essentially simple combinations of multiple independent powder weighing units in physical space. Each unit needs to be equipped with its own complete set of feeding, weighing, and transfer mechanisms, resulting in a large number of parts, complex structure, and significantly increased manufacturing costs. At the same time, the lack of effective functional integration and space reuse between the powder weighing units makes the overall size of the equipment too large, which is not conducive to its arrangement in compact production lines and also increases the difficulty of daily maintenance and cleaning. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a single-output multi-powder weighing device, which aims to solve the problem of the lack of a low-cost, high-efficiency, compact and reliable single-output multi-powder weighing device in the prior art.

[0006] A multi-powder weighing device according to an embodiment of the present invention includes: Warehouse body; The powder weighing assembly is disposed in the hopper and includes a fixed plate, a first driving component connected to the fixed plate, a plurality of weighing components disposed on the fixed plate, a hopper suspended in a groove in the middle of the fixed plate and connected to the weighing components, and a second driving component disposed on the hopper. A feeding assembly, located above the powder weighing assembly, is used to feed powder into the hopper; A feeding assembly is disposed below the powder weighing assembly and includes a feeding component, multiple independent hoppers and a feeding channel disposed on the feeding component, and a third driving component connected to the feeding component. The two ends of the feeding channel are respectively adapted to the independent hoppers and the hopper. The first driving component is used to drive the fixed plate to move, the second driving component is used to drive the hopper to move to realize the opening and closing of the hopper, and the third driving component is used to drive the feeding component to move.

[0007] In addition, a multi-powder weighing device according to the above embodiments of the present invention may also have the following additional technical features: Furthermore, multiple hoppers are suspended side by side in the groove, and each weighing component is connected to the side of the corresponding hopper via a clamping member. The second driving member is disposed on the hopper away from the clamping member and connected to the bottom plate, so that the bottom plate closes or opens the bottom of the hopper. The bottom plate and the hopper are set independently of each other.

[0008] Furthermore, the feeding assembly includes a vibrating feeding component, a feeding channel disposed on the vibrating feeding component, a feeding pipe fixed on the top of the hopper body located on one side of the feeding channel, and a blocking component located on the other side of the feeding channel.

[0009] Furthermore, the hopper includes a first hopper, a second hopper, and a third hopper arranged sequentially from the first direction to the second direction, the silo includes a first silo, a second silo, and a third silo arranged sequentially from the first direction to the second direction, and the feeding channel includes a plurality of independent first pipes, second pipes, and third pipes of the same length, used to connect to the corresponding hoppers and silos respectively.

[0010] Furthermore, the hopper has openings at the top and bottom, and a scraper is provided at the bottom of the hopper.

[0011] Furthermore, the feeding channel includes a material gathering chamber located below the outlet of the feeding pipe and multiple independently arranged feeding pipes. The multiple feeding pipes are connected to the material gathering chamber and are flush with one end near the material gathering chamber. The other end of the multiple feeding pipes is adapted to different hoppers respectively.

[0012] Furthermore, the vibrating feeding component is equipped with a vibration excitation unit and an elastic support unit; the vibration excitation unit is installed at an angle to output synthetic vibration, which is decomposed into a vertical vibration component for loosening powder and a horizontal vibration component for driving powder to slide along the feeding channel; the elastic support unit is fixed inside the lower chamber and supports the feeding component as a whole to counteract the amplitude attenuation of vibration during transmission in the feeding channel pipeline.

[0013] Furthermore, the friction coefficient and cross-sectional area of ​​each of the feed pipes are different; wherein, in the initial state, the height of the material in the material accumulation chamber is greater than the height of any of the feed pipes, and the magnitude of the friction coefficient and the magnitude of the cross-sectional area are inversely proportional to the length of the feed pipe.

[0014] Furthermore, each of the feed pipes is provided with a height-adjustable suspension baffle, and the plurality of suspension baffles are equidistantly distributed along the length of the feed pipe.

[0015] Furthermore, the first driving component includes a driving member and a slide rail fixed to the top of the lower compartment and respectively disposed on both sides of the through slot. The driving member is connected to the movable block, the slide rail is adapted to the slider, and the slider and the movable block are connected to the fixed plate through a connecting member. The driving member is used to drive the movable block to move closer to or away from the driving member.

[0016] This invention constructs a multi-station collaborative powder weighing assembly by dividing a single chamber into an upper and lower chamber and integrating multiple weighing components and multiple hoppers onto a single fixed plate. Based on this, a single first drive component drives the entire fixed plate to move laterally, simultaneously switching the positions of each hopper relative to the feeding component and the feeding channel. Compared to simply assembling multiple independent powder weighing units, each requiring its own drive and transmission mechanism, this integrated layout structurally reduces the number of drive sources and transmission chains, avoiding increased manufacturing costs and complex synchronous control due to redundant drive components. Simultaneously, the feeding component, located in the lower chamber, receives powder from the upper chamber hopper via a channel. A third drive component drives the entire feeding component to move laterally, ensuring accurate alignment of each feeding channel with its corresponding hopper at the unloading position. This allows for the orderly transfer of multiple portions of powder between the upper and lower chambers in a single operation, significantly improving efficiency. Therefore, the upper chamber centrally handles feeding and weighing, while the lower chamber centrally handles receiving and discharging. These functions are layered and stacked vertically, maximizing space utilization. This allows the machine to achieve multi-station powder weighing efficiency while maintaining a compact structure and small size, facilitating flexible arrangement within the production line. Thus, this invention solves the problem of the lack of a low-cost, highly efficient, compact, and reliable single-output multi-powder weighing device in the prior art. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a multi-powder weighing device according to an embodiment of the present invention; Figure 2 This is an assembly diagram of the powder weighing component and the feeding component in one embodiment of the present invention; Figure 3 This is a schematic diagram of the powder weighing component in one embodiment of the present invention; Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5 This is a schematic diagram of the feeding assembly in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the silo in one embodiment of the present invention; Figure 7 This is a schematic diagram of the feeding channel in one embodiment of the present invention; Figure 8 This is a schematic diagram of the feeding channel in one embodiment of the present invention;

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be thorough and complete.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figures 1 to 8 The image shows a multi-powder weighing device according to an embodiment of the present invention, comprising: a bin body 10, the bin body 10 including an upper bin and a lower bin, the bottom of the upper bin being provided with a through groove to connect to the lower bin; The powder weighing assembly 20 is installed in the upper chamber of the silo body 10, including a fixed plate 21, a first drive component 22 connected to the fixed plate 21, a plurality of weighing components 23 installed on the fixed plate 21, a hopper 24 suspended in the groove in the middle of the fixed plate 21 and connected to the weighing components 23, and a second drive component 25 installed on the hopper 24. The feeding component 30 is located in the upper chamber of the hopper 10 and above the powder weighing component 20, and is used to feed powder into the hopper 24. The feeding assembly 40 is located in the lower chamber of the silo body 10 and below the powder weighing assembly 20. It includes a feeding component 41, multiple independent silos 42 and a feeding channel 43 on the feeding component 41, and a third drive component 44 connected to the feeding component 41. The two ends of the feeding channel 43 are respectively adapted to the independent silos 42 and the hopper 24. The first driving component 22 is used to drive the fixed plate 21 to move laterally, the second driving component 25 is used to drive the bottom plate 26 of the hopper 24 to rotate relative to the main body of the hopper 24, and the third driving component 44 is used to drive the feeding component 41 to move laterally.

[0023] Understandably, by dividing a single bin 10 into an upper and lower bin, and integrating multiple weighing components 23 and multiple hoppers 24 onto a single fixed plate 21, a multi-station collaborative powder weighing assembly 20 is formed. Based on this, a single first drive component 22 drives the entire fixed plate 21 to move laterally, simultaneously completing the position switching of each hopper 24 relative to the feeding component 30 and the feeding channel 43. Compared to simply assembling multiple independent powder weighing units, each requiring its own drive and transmission mechanism, this integrated layout structurally reduces the number of drive sources and transmission chains, avoiding increased manufacturing costs and complex synchronous control due to redundancy in the drive components 221. Simultaneously, the feeding component 40, located in the lower bin, receives powder from the upper bin hopper 24 via a channel, and a third drive component 44 drives the feeding component 41 to move laterally, ensuring accurate alignment of each feeding channel 43 with the corresponding hopper 24 at the unloading position. This enables the orderly transfer of multiple portions of powder between the upper and lower bins in a single operation, greatly improving efficiency. Therefore, the upper chamber centrally handles feeding and weighing, while the lower chamber centrally handles receiving and discharging. These functions are layered and stacked vertically, maximizing space utilization. This allows the machine to achieve multi-station powder weighing efficiency while maintaining a compact structure and small size, facilitating flexible arrangement within the production line. Thus, this invention solves the problem of the lack of a low-cost, highly efficient, compact, and reliable single-output multi-powder weighing device in the prior art.

[0024] Specifically, multiple hoppers 24 are suspended side-by-side in the groove. Each weighing component 23 is connected to the side of its corresponding hopper 24 via clamping members. A second driving component 25 is located on the side of the hopper 24 away from the clamping members and connected to the base plate 26, allowing the base plate 26 to close or open the bottom of the hopper 24. The base plate 26 and the hoppers 24 are independently configured. In practice, each hopper 24 is suspended side-by-side in the groove of the fixing plate 21 and connected to the weighing component 23 one-to-one via side clamping members. This allows the weight change of each hopper 24 to be directly and independently transmitted to its corresponding weighing component 23, without interference from adjacent hoppers 24, thus forming multiple uncoupled weighing units. Furthermore, the side-mounted weighing components 23 allow for direct bottom discharge from the hoppers 24, eliminating the need for the existing flip-feeding method. This results in a more compact structural distribution and higher efficiency compared to the flip-feeding method. Furthermore, by positioning the second drive component 25, which drives the opening and closing of the base plate 26, on the side away from the clamping component, the torque generated by the unloading action is transmitted around the clamping point. This transmission path is essentially isolated from the force-sensitive direction of the weighing component 23, significantly reducing the disturbance to the weighing signal caused by the unloading impact. Simultaneously, the base plate 26 and the hopper 24 body adopt independent separate structures. During unloading, only the base plate 26 rotates and opens while the hopper 24 body remains stationary. The weighing component 23 maintains a stable connection with the hopper 24 body throughout the unloading process, without any additional displacement or deformation during the unloading action. This layout eliminates the need for overall movement switching between the weighing and unloading stages for each hopper 24. The weighing and unloading functions are structurally decoupled, improving the reliability of the unloading action while ensuring independent powder weighing accuracy.

[0025] Additionally, the feeding assembly 30 includes a vibrating feeding component 31, a feeding channel 32 disposed on the vibrating feeding component 31, a feeding pipe 33 fixed to the top of the upper hopper on one side of the feeding channel 32, and a sealing component 34 located on the other side of the feeding channel 32. In specific implementation, the feeding assembly 30 uses the vibrating feeding component 31 as a power source to drive the feeding channel 32 disposed on it to generate continuous vibration, causing the powder to form a stable forward sliding motion within the channel, realizing quantitative conveying from the outside of the device towards the hopper 24. The feeding pipe 33 is fixed to the top of the upper hopper and located on one side of the feeding channel 32, serving as the only inlet for the powder to enter the device. Its fixed position relative to the feeding channel 32 determines the initial flow direction of the powder after it enters, ensuring that the incoming material can accurately fall into the working area of ​​the feeding channel 32. The sealing component 34 is provided on the other side of the feeding channel 32, which can promptly close the end of the channel at the end of feeding, preventing residual vibration from shaking the remaining powder to non-target positions or causing dust to escape due to airflow disturbance.

[0026] Specifically, the hopper 24 includes a first hopper 241, a second hopper 242, and a third hopper 243 arranged sequentially from the first direction to the second direction. The hopper 42 includes a first hopper 421, a second hopper 422, and a third hopper 423 arranged sequentially from the first direction to the second direction. The feeding channel 43 includes multiple independent first pipes, second pipes, and third pipes. The two ends of the first pipes, second pipes, and third pipes are respectively connected to the first hopper 241 and the first hopper 421, the second hopper 242 and the second hopper 422, and the third hopper 243 and the third hopper 423, so that the lengths of the first pipes, second pipes, and third pipes are consistent. In specific implementation, by arranging the hoppers 24 and the hoppers 42 sequentially in the same direction and configuring independent first pipes, second pipes, and third pipes for each pair of corresponding relationships, three sets of unloading channels that are spatially juxtaposed but completely isolated in terms of flow channels are constructed. Each pipeline is connected at both ends to a designated hopper 24 and silo 42, ensuring that each weighed portion of powder can only enter the designated silo 42 through its dedicated channel during the unloading stage. This structurally eliminates the possibility of cross-contamination or mixing between different batches of powder during transfer. Simultaneously, maintaining the same length for all three pipelines eliminates time differences and frictional resistance variations caused by varying pipeline lengths, ensuring consistent flow characteristics across all pathways under the same driving conditions. This equal-length design allows for natural synchronization of the unloading process for multiple portions of powder, achieving equal transfer of powder from each hopper 24 to the corresponding silo 42 without additional timing control, providing a simplified synchronization basis for multi-station collaborative operations. It should be noted that the three hoppers 24 and three silos 42 are only one embodiment of the present invention; the number of hoppers, silos, and independent pipelines can also be 2, 4, 5, 6, 7, 8, ..., N. Furthermore, in this specific embodiment, the driving method and direction of movement of each driving component are merely examples and not limitations. Any structure or device that can achieve the same effect is within the protection scope of this invention.

[0027] Additionally, the hopper 42 has openings at the top and bottom, and a scraper is installed at the bottom. In practice, the powder is first piled up in different feeding channels 43. When the powder is being distributed, the third drive component 44 drives the feeding assembly 40 to move, aligning the hopper 42 with the mold. At this time, the feeding component 41 vibrates, causing the powder in the feeding channels 43 to enter different hoppers 42 and then into the corresponding molds for distribution. The scraper at the bottom of the hopper 42 moves along the lower surface of the hopper 42 during the discharge process, scraping the discharge area to level the powder after it enters the mold, thus completing the auxiliary distribution and preventing local accumulation of powder during discharge. In addition, it can also prevent residual accumulation of powder at the outlet due to moisture absorption or static electricity. As a result, the outlet of the hopper 42 remains clean after each discharge, and the next batch of powder will not mix with the residual old material, avoiding cross-contamination and eliminating the accumulation of weighing deviations caused by different residual amounts. Stable weighing and discharging accuracy is maintained in continuous multi-batch operations.

[0028] As an example, and not a limitation, in some optional embodiments, the feed channel 32 includes a material-gathering chamber located below the outlet of the feed pipe 33 and multiple independently arranged feed pipes. The multiple feed pipes are connected to the material-gathering chamber and are flush with one end near the chamber. The other ends of the multiple feed pipes are respectively adapted to different hoppers 24. In specific implementations, the material-gathering chamber is located below the outlet of the feed pipe 33 to receive powder from a single feed pipe 33 and provide temporary collection and buffering, avoiding splashing and uneven distribution caused by powder directly impacting the inlets of each feed pipe after exiting the pipe. The multiple feed pipes are flush with each other at the end near the material-gathering chamber, meaning each pipe inlet is at the same horizontal level and the same material depth. This ensures equal material intake opportunities when the material level in the material-gathering chamber is sufficient, eliminating inherent differences in material supply caused by different inlet positions. Each feed pipe extends independently to a different weighing hopper 24, forming a one-to-many distribution path from a single feed source to multiple weighing targets. This combination of material aggregation buffering and level distribution smoothly transitions the distribution process from single-source feeding to multi-target hoppers 24, providing an equalized entry point for subsequent hoppers 24 to obtain a more consistent feed volume. Furthermore, the use of feed pipes of varying lengths ensures that the powder weight in each hopper 24 reaches the target weight in batches within a short time. When the powder weight in the first hopper 24 is close to reaching the target weight, the vibration frequency or amplitude can be adjusted based on the difference between the powder weight in the first hopper 24 and the target weight. This precisely ensures that the powder weight in the first hopper 24 reaches the target weight, while the powder weight in other hoppers 24 is still significantly short of the target weight. This targeted vibration adjustment does not affect the subsequent powder weight reaching the target in other hoppers 24. Once the first hopper 24 reaches the target weight, the corresponding feed pipe can be sealed using the appropriate sealing component. However, this setup can lead to powder accumulation and even clumping in the feed pipes that are blocked earlier, affecting subsequent powder feeding, weighing, and use. Therefore, after each hopper 24 completes weighing and transfers the powder to the feeding assembly 40 in the lower chamber, the feed channel 32 stops feeding, the blocking components open, and the vibrating feed component 31 operates, causing the feed channel 32 to empty. The recovery box on the side of the lower chamber faces each hopper 24, thus recovering the emptied powder. After emptying, the feed channel 32 resumes feeding, causing the powder to accumulate to a certain height in the aggregation chamber to cover each feed pipe.

[0029] Additionally, the vibrating feed component 31 is equipped with a vibrating excitation unit and an elastic support unit. The vibrating excitation unit is installed at an angle to output a composite vibration. This composite vibration is decomposed into a vertical vibration component for loosening the powder and a horizontal vibration component for driving the powder to slide along the feeding channel 43. The elastic support unit is fixed inside the lower chamber and supports the feeding component 41 as a whole, thus offsetting the amplitude attenuation of the vibration during transmission through the feeding channel 43. In specific implementation, the vibrating excitation unit is installed at an angle, and its output excitation force has both vertical and horizontal components, which are combined to form a composite vibration acting on the powder. The vertical vibration component loosens the powder, disrupting the interlocking and bridging structure between particles, keeping the powder in an easily flowable, activated state. The horizontal vibration component gives the powder a continuous forward acceleration, driving it to slide directionally along the conveying surface of the feeding channel 43, achieving a continuous feeding process that simultaneously loosens and conveys the powder. The elastic support unit is fixed inside the lower compartment and supports the feeding component 41 as a whole. On the one hand, it provides a stable elastic boundary for the vibration system, so that the vibration energy is concentrated on the powder conveying rather than dissipated in the rigid impact of the structure. On the other hand, the excitation force is evenly transmitted to the entire feeding channel 43 pipeline by the overall support method, which effectively compensates for the amplitude attenuation caused by material damping and connection gaps during the long-distance transmission of vibration along the pipeline. This ensures that the pipeline end far from the excitation source can still maintain sufficient vibration intensity, thereby maintaining a similar conveying capacity over the entire length.

[0030] Specifically, the friction coefficient and cross-sectional area of ​​each feed pipe differ. Initially, the height of the material in the aggregate chamber is greater than the height of any feed pipe, and the friction coefficient and cross-sectional area are inversely proportional to the length of the feed pipe. In practice, given the inconsistent lengths of the feed pipes, the friction coefficient and flow cross-sectional area of ​​each pipe are configured differently to actively compensate for the inherent impact of length differences on conveying capacity. The friction coefficient is inversely proportional to the pipe length, meaning that longer pipes have smoother inner walls and lower conveying resistance, thus achieving higher powder sliding speeds under the same vibration drive conditions, compensating for the arrival time lag and energy loss along the path caused by the longer distance. The cross-sectional area is also inversely proportional to the pipe length, meaning that longer pipes have smaller flow cross-sections, which, under consistent inlet feed pressure, can limit the feed volume per unit time, and, combined with increased speed, stabilize the mass flow rate. Simultaneously, the initial state is set so that the material height in the material-gathering chamber is greater than the height of any feed pipe, ensuring that the inlet of each pipe is always fully submerged throughout the feeding process, unaffected by small fluctuations in the material level within the chamber. This combination of friction coefficient and cross-sectional area being inversely proportional to length works synergistically from both driving force and flow capacity perspectives, enabling each feed pipe to achieve a relatively consistent mass conveying rate despite varying lengths. This provides a structural basis for achieving equal-volume feeding from multiple hoppers 24. Furthermore, this configuration ensures consistent feeding efficiency across all hoppers 24, preventing sequential weighing and further improving feeding efficiency. However, this implementation is not suitable for situations where the required powder weight for each hopper 24 is inconsistent; the implementation without adjusting the friction coefficient and cross-sectional area is more appropriate. Therefore, in specific implementations, the corresponding feed pipe can be selected according to requirements.

[0031] In addition, each feed pipe is equipped with a height-adjustable suspended baffle, with multiple suspended baffles evenly distributed along the length of the feed pipe. In practical implementation, under conditions where some types of powder are prone to agglomeration and feeding is pulsating, the powder may accumulate locally within the pipe during vibration conveying, forming momentary bulges. This causes a sharp reduction in the effective flow cross-section at that point, temporarily obstructing the powder flow. When the powder bulge suddenly collapses under continuous vibration, it will rush into the hopper 24 in a short time, causing a short-term, sudden feeding deviation and disrupting the stability and consistency of the weighing in each hopper 24. To address this problem, suspended floating baffles are evenly spaced along the length of each feed pipe, with a fixed gap between the lower end of the baffle and the bottom surface of the conveying pipe. During normal conveying, the powder passes smoothly through the gap below the baffles, and the baffles do not produce a significant throttling effect. When a temporary bulge of powder forms at a certain point in the pipeline due to powder agglomeration or feeding pulsations, the height of the powder pile exceeds the lower edge of the baffle. Under vibration, it comes into contact with the baffle and scrapes it. The floating baffle applies a cutting and leveling action to the bulge, scraping it flat and redistributing it to the surrounding area, so that the effective flow cross section is quickly restored, eliminating the feeding pulse caused by local blockage and sudden collapse. The baffles are evenly distributed along the length of the pipeline, so that this scraping and leveling action covers the entire length of the pipeline. No matter where the powder pile forms, it can be dealt with by the nearest baffle in a timely manner. Structurally, it suppresses the generation and propagation of sudden feeding deviations and ensures the continuous and stable feeding process of each hopper. Under the condition that the powder has excellent flowability and no tendency to agglomerate, the turbulence baffle can be omitted without affecting the normal function of the device.

[0032] Specifically, the first driving component 22 is located in the lower compartment and connected to the feeding component 41 via a through slot. The first driving component 22 includes a driving element 221 fixed to the top of the lower compartment and a slide rail 222 respectively located on both sides of the through slot. The driving element 221 is connected to the movable block 223, and the slide rail 222 is adapted to the slider 224. The slider 224 and the movable block 223 are connected to the fixed plate 21 via a connector 225. The driving element 221 is used to drive the movable block 223 to move closer to or away from the driving element 221. In a specific implementation, the main body of the first driving component 22 is installed on the top of the lower compartment, and its driving element 221 and slide rail 222 are placed on both sides of the through slot, forming a symmetrically arranged drive-guide structure. The driving element 221 drives the movable block 223 to move linearly, while the slide rail 222 provides lateral support and motion constraint for the entire motion assembly through the adapted slider 224. The two work together to ensure that the driving force is output smoothly in a preset direction without generating a deflection torque. The slider 224 and the movable block 223 are connected to the fixed plate 21 of the feeding component 41 via the connector 225. The driving force is transmitted to the entire feeding component 41 through this connection path, driving it to move laterally along the direction defined by the through slot. The symmetrical layout on both sides ensures that the feeding component 41 is subjected to balanced forces on both sides during movement, effectively suppressing the swaying or jamming that may occur due to unilateral drive, and ensuring the repeatability of the positioning accuracy of each feeding channel 43 when docking with the upper hopper 24. This drive structure integrates power output, motion guidance, and load transmission in a compact space at the top of the lower hopper, providing a reliable mechanical guarantee for the accurate switching of the feeding component 41 between various stations. In addition, the lower hopper location also avoids the influence of dust generated by the vibration feeding and weighing in the upper hopper.

[0033] In summary, this invention divides a single chamber 10 into an upper and lower chamber, and integrates multiple weighing components 23 and multiple hoppers 24 onto a single fixed plate 21, forming a multi-station collaborative powder weighing assembly 20. Based on this, a single first drive component 22 drives the entire fixed plate 21 to move laterally, simultaneously switching the positions of each hopper 24 relative to the feeding component 30 and the feeding channel 43. Compared to simply assembling multiple independent powder weighing units, each requiring its own drive and transmission mechanism, this integrated layout structurally reduces the number of drive sources and transmission chains, avoiding increased manufacturing costs and complex synchronous control due to redundancy in the drive components 221. Simultaneously, the feeding component 40, located in the lower chamber, receives powder from the upper chamber hoppers 24 via a channel, and a third drive component 44 drives the feeding component 41 to move laterally, ensuring accurate alignment of each feeding channel 43 with its corresponding hopper 24 at the unloading position. This enables the orderly transfer of multiple portions of powder between the upper and lower chambers in a single operation, significantly improving efficiency. Therefore, the upper chamber centrally handles feeding and weighing, while the lower chamber centrally handles receiving and discharging. These functions are layered and stacked vertically, maximizing space utilization. This allows the machine to achieve multi-station powder weighing efficiency while maintaining a compact structure and small size, facilitating flexible arrangement within the production line. Thus, this invention solves the problem of the lack of a low-cost, highly efficient, compact, and reliable single-output multi-powder weighing device in the prior art.

[0034] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A multi-powder weighing device, characterized in that, include: Warehouse body; The powder weighing assembly is disposed in the hopper and includes a fixed plate, a first driving component connected to the fixed plate, a plurality of weighing components disposed on the fixed plate, a hopper suspended in a groove in the middle of the fixed plate and connected to the weighing components, and a second driving component disposed on the hopper. A feeding assembly, located above the powder weighing assembly, is used to feed powder into the hopper; A feeding assembly is disposed below the powder weighing assembly and includes a feeding component, multiple independent hoppers and a feeding channel disposed on the feeding component, and a third driving component connected to the feeding component. The two ends of the feeding channel are respectively adapted to the independent hoppers and the hopper. The first driving component is used to drive the fixed plate to move, the second driving component is used to drive the hopper to move to realize the opening and closing of the hopper, and the third driving component is used to drive the feeding component to move.

2. The multi-powder weighing device according to claim 1, characterized in that, Multiple hoppers are suspended side by side in the groove. Each weighing component is connected to the side of the corresponding hopper via a clamping member. The second driving member is disposed on the hopper away from the clamping member and connected to the bottom plate so that the bottom plate can close or open the bottom of the hopper. The bottom plate and the hopper are set independently of each other.

3. The multi-powder weighing device according to claim 1, characterized in that, The feeding assembly includes a vibrating feeding component, a feeding channel disposed on the vibrating feeding component, a feeding pipe fixed on the top of the hopper body on one side of the feeding channel, and a blocking component located on the other side of the feeding channel.

4. The multi-powder weighing device according to claim 2, characterized in that, The hopper includes a first hopper, a second hopper, and a third hopper arranged sequentially from a first direction to a second direction. The silo includes a first silo, a second silo, and a third silo arranged sequentially from the first direction to the second direction. The feeding channel includes a plurality of independent first pipes, second pipes, and third pipes of equal length, used to connect to the corresponding hoppers and silos respectively.

5. The multi-powder weighing device according to claim 1, characterized in that, The hopper has openings at the top and bottom, and a scraper is provided at the bottom of the hopper.

6. The multi-powder weighing device according to claim 3, characterized in that, The feeding channel includes a material gathering chamber located below the outlet of the feeding pipe and multiple independently arranged feeding pipes. The multiple feeding pipes are connected to the material gathering chamber and are flush with one end near the material gathering chamber. The other end of the multiple feeding pipes is adapted to different hoppers.

7. The multi-powder weighing device according to claim 6, characterized in that, The vibrating feed component is equipped with a vibration excitation unit and an elastic support unit. The vibration excitation unit is installed at an angle to output a composite vibration. The composite vibration is decomposed into a vertical vibration component for loosening the powder and a horizontal vibration component for driving the powder to slide along the feeding channel. The elastic support unit is fixed inside the lower compartment and supports the feeding component as a whole to counteract the amplitude attenuation of the vibration during the transmission process in the feeding channel pipeline.

8. The multi-powder weighing device according to claim 7, characterized in that, The friction coefficient and cross-sectional area of ​​each of the feed pipes are different; wherein, in the initial state, the height of the material in the material chamber is greater than the height of any of the feed pipes, and the magnitude of the friction coefficient and the magnitude of the cross-sectional area are inversely proportional to the length of the feed pipe.

9. The multi-powder weighing device according to claim 8, characterized in that, Each of the feed pipes is equipped with a height-adjustable suspension baffle, and the plurality of suspension baffles are equidistantly distributed along the length of the feed pipe.

10. The multi-powder weighing device according to claim 1, characterized in that, The first driving component includes a driving member and a slide rail fixed to the top of the lower compartment and respectively disposed on both sides of the through slot. The driving member is connected to the movable block, the slide rail is adapted to the slider, and the slider and the movable block are connected to the fixed plate through a connector. The driving member is used to drive the movable block to move closer to or away from the driving member.

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