Method for tabletting sample powder, supporting mold and preparation method of supporting mold

Abstract

The invention provides a method for sample powder tabletting, a supporting mold and a preparation method of the supporting mold, the supporting mold comprises boric acid, starch and gelatin, the upper portion of the supporting mold is a cylinder, the upper end of the cylinder comprises a sample groove used for containing sample powder, and the lower end of the sample groove is provided with a plurality of clamping grooves used for clamping the sample powder. The lower portion of the supporting die is a circular truncated cone with the diameter smaller than the outer diameter of the cylinder. According to the technical scheme provided by the invention, the problems of low preparation efficiency, insufficient mechanical properties, high sample powder filling amount, low core forming rate and the like of traditional powder tablets are solved, rapid, low-cost and high-quality powder tablet preparation is realized, and the requirements of X-fluorescence spectrum detection on samples are met.

Description

Technical Field

[0001] This invention relates to the field of X-ray fluorescence spectrometer sample preparation technology, specifically to a method for pressing sample powder into tablets, a support mold, and a method for preparing the support mold. Background Technology

[0002] Generally, before performing component analysis on powder samples using X-ray fluorescence spectrometry, the powder samples need to be compressed into tablets for easier detection. However, with the widespread application of X-ray fluorescence spectroscopy in various fields, higher requirements have been placed on powder compression techniques.

[0003] In traditional powder compression methods, pure boric acid compression is the most common, but this method has many drawbacks. Regarding preparation efficiency, pure boric acid compression typically requires a "funnel filling method" of layered boric acid and sample loading. The process involves first filling the sample cup with boric acid, then carefully placing the sample inside, and finally filling with more boric acid. This cumbersome process, with multiple loading steps, not only increases the workload for operators but also takes a long time, resulting in low single-batch compression efficiency and making it difficult to meet the needs of rapid testing of large numbers of samples. Furthermore, pure boric acid tablets are relatively fragile after molding. During sample transportation and testing, they are highly susceptible to breakage in the event of a fall from a height. This not only damages the sample and affects the accuracy of the test results but also necessitates sample re-preparation, further wasting time and costs.

[0004] In the use of sample cups, traditional methods, due to unreasonable powder filling techniques, result in a high powder content within the sample cup, but a low percentage of the sample that can actually participate in the detection (i.e., form the effective detection core), leading to a low core formation rate. Excessive powder filling not only wastes material but also affects detection accuracy, as too many non-effective detection portions may interfere with the detection signal.

[0005] Therefore, a technical solution is needed to address the problems of low preparation efficiency, insufficient mechanical properties, high sample powder filling amount and low core formation rate in traditional powder pressing, so as to achieve rapid, low-cost and high-quality powder pressing preparation and meet the sample requirements of X-ray fluorescence spectroscopy detection. Summary of the Invention

[0006] This application aims to provide a method for sample powder pressing, a support mold, and a method for preparing the support mold, which solves the problems of low preparation efficiency, insufficient mechanical properties, high sample powder filling amount and low core formation rate in traditional powder pressing, and achieves rapid, low-cost, and high-quality powder pressing preparation to meet the sample requirements of X-ray fluorescence spectroscopy detection.

[0007] According to one aspect of this application, a support mold for compressing sample powder into tablets is provided. The support mold includes boric acid, starch, and gelatin. The upper part of the support mold is a cylinder, and the upper end of the cylinder includes a sample groove for accommodating the sample powder. The lower part of the support mold is a frustum with a diameter smaller than the outer diameter of the cylinder.

[0008] According to some embodiments, the overall thickness of the support mold is 8~12mm and the diameter is 38~40mm.

[0009] According to some embodiments, the boric acid has a mass ratio of 70% to 80%.

[0010] According to some embodiments, the mass fraction of the starch is 5% to 12%.

[0011] According to some embodiments, the mass fraction of the gelatin is 3% to 10%.

[0012] According to some embodiments, it further includes: a first excipient and a second excipient, wherein the first excipient includes: sodium carboxymethyl cellulose, and the mass ratio of the first excipient is 5% to 12%, and the second excipient includes: a lubricant, and the mass ratio of the second excipient is 0% to 5%.

[0013] According to some embodiments, the maximum pressure bearing capacity of the support mold is not less than 80t.

[0014] According to another aspect of this application, a method for preparing a support mold is provided, comprising: Prepare raw materials according to the quality ratio; The raw materials are placed in a mixer and mixed to obtain a mixed raw material with consistent composition; The mixed raw materials are placed into a molding die and pressurized to obtain the support die.

[0015] According to some embodiments, when the mixed raw materials are placed into a molding die for pressure molding, the mixed raw materials placed into the molding die are 8-15g, the external pressure is not less than 6 tons, and the pressure holding time is not less than 5 seconds.

[0016] According to another aspect of this application, a method for compressing sample powder into tablets is provided, the method comprising: Place the sample powder into the sample slot of the support mold as described in any of the above items; The supporting mold and the sample powder are pressurized to obtain a sample tablet.

[0017] According to embodiments of this application, sample tablets are fabricated by placing sample powder in the supporting mold and applying pressure in an integrated manner, thereby improving the quality of sample tablets and reducing the need for heavy pressing or scrapping due to problems such as bubbles, cracks, and breakage. This integrated rapid tableting method eliminates the need for layered filling, reducing the tableting time by more than 50% compared to traditional boric acid tableting. Taking batch sample testing as an example, traditional methods may require several hours to complete the tableting of a certain number of samples, while the method of this invention can complete the tableting of the same number of samples in a shorter time, greatly improving the efficiency of sample preparation and saving a significant amount of time for subsequent testing, thus meeting the needs of rapid testing. Moreover, the design of this invention reduces the amount of major raw materials such as boric acid, and the cost of composite raw materials is reduced by approximately 20% compared to the pure boric acid process. In large-scale sample preparation, the reduction in raw material costs will bring significant economic benefits.

[0018] According to some embodiments, the support mold has good air permeability, demolding properties and pressure bearing capacity (≥80 tons), which can significantly improve the uniformity and integrity of sample pressing, improve the accuracy and repeatability of test data, and reduce resource waste and manual re-inspection costs.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 A schematic diagram of a support mold for pressing sample powder tablets is shown according to an example embodiment.

[0022] Figure 2 A flowchart illustrating a method for preparing a support mold according to an example embodiment is shown.

[0023] Figure 3 A flowchart of a method for compressing sample powder into tablets according to an example embodiment is shown. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0025] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0028] It should be understood that although the terms first, second, third, etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this application. As used herein, the term "and / or" includes all combinations of any one and more of the associated listed items.

[0029] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0030] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments, and the modules or processes in the drawings are not necessarily essential for implementing this application, and therefore cannot be used to limit the scope of protection of this application.

[0031] With the widespread application of X-ray fluorescence spectroscopy in various fields, higher requirements have been placed on powder compression technology.

[0032] In traditional powder compression methods, pure boric acid compression is the most common, but this method has many drawbacks. In terms of preparation efficiency, pure boric acid compression typically requires a "funnel-filling method" where boric acid and sample are layered. First, the sample powder and binder are thoroughly mixed, then the mixture is loaded into a compression mold and pressed to obtain a sample for X-ray fluorescence analysis. The entire process is cumbersome, with multiple fillings increasing the workload of operators and consuming a lot of time, resulting in low efficiency per compression and making it difficult to meet the needs of rapid detection of large numbers of samples. Furthermore, pure boric acid compression tablets are relatively fragile after molding. During sample transportation and testing, they are prone to breakage in the event of a fall from a height. This not only damages the sample and affects the accuracy of the test results, but also requires re-preparation, further wasting time and costs.

[0033] Currently, commonly used tableting methods include direct powder compression, adding solid binders, and adding liquid binders. While direct powder compression is simple, fast, and inexpensive, it has drawbacks. It's difficult to compress certain non-metallic mineral samples, affecting irradiation results, and powder scattering can easily contaminate the instrument's sample chamber. Furthermore, traditional methods cannot compress samples with insufficient powder (less than 0.5g) due to high powder consumption. Adding solid binders (usually paraffin wax) can compress difficult-to-compress samples, but accurate weighing of the binder is necessary to ensure the correct rock-to-binder ratio. Thorough and uniform mixing of the powder sample and binder typically requires an electric mixer, which is costly and relatively complex to operate. Cleaning the electric mixer is also troublesome, and incomplete cleaning can easily lead to cross-contamination. Adding liquid binders results in minimal dilution of powdered samples, and adding liquid binders to samples is easier and less expensive than adding solid binders, avoiding cross-contamination. This method is widely used in current slide preparation scenarios. However, slides prepared using liquid binders tend to have higher water content, requiring longer drying times. Controlling the drying temperature and duration to ensure sample consistency throughout the process is a significant challenge.

[0034] To address these issues, this application proposes a method for sample powder tableting, a supporting mold, and a method for preparing the supporting mold. This solves the problems of low preparation efficiency, insufficient mechanical properties, high sample powder filling volume, and low core formation rate inherent in traditional powder tableting. It achieves rapid, low-cost, and high-quality powder tablet preparation, meeting the sample requirements of X-ray fluorescence spectroscopy. According to the embodiments, sample tablets are prepared by placing the sample powder in the supporting mold for integrated pressing, improving the quality of the tablets and reducing the need for heavy pressing or scrapping due to air bubbles, cracks, and breakage. This integrated rapid tableting method eliminates the need for layered filling, reducing the time required for a single tableting process by more than 50% compared to traditional boric acid tableting. For example, in batch sample testing, traditional methods may require several hours to complete the tableting of a certain number of samples. However, the method of this invention can complete the tableting of the same number of samples in a shorter time, greatly improving sample preparation efficiency and saving significant time for subsequent testing, thus meeting the needs of rapid detection. Furthermore, the design of this invention reduces the amount of major raw materials such as boric acid, and the cost of composite raw materials is reduced by approximately 20% compared to the pure boric acid process. In the process of large-scale sample preparation, the reduction of raw material costs will bring significant economic benefits.

[0035] According to some embodiments, the support mold has good air permeability, demolding properties and pressure bearing capacity (≥80 tons), which can significantly improve the uniformity and integrity of sample pressing, improve the accuracy and repeatability of test data, and reduce resource waste and manual re-inspection costs.

[0036] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application.

[0037] Figure 1 A schematic diagram of a support mold for pressing sample powder tablets is shown according to an example embodiment.

[0038] See Figure 1 The figure shows a support mold for pressing sample powder into tablets, the support mold comprising: boric acid, starch, and gelatin.

[0039] According to some embodiments, the powder tablet support mold of the present invention is composed of a mixture of various components in a specific mass ratio, including boric acid, starch, and gelatin. Boric acid serves as the main support material of the mold. Boric acid possesses good chemical stability and certain formability, providing basic structural support for the mold and is a fundamental component for mold forming. Starch is used to adjust the porosity and formability of the mold. During the pressing process, the distribution and morphological changes of starch particles can affect the pore structure inside the mold. Appropriate porosity ensures gas expulsion during pressing, avoiding internal defects caused by gas residue, and also helps improve the forming quality of the mold, making it more dense and uniform. Gelatin primarily enhances the toughness and adhesion of the mold. Gelatin molecules can form hydrogen bonds and other forces, creating a flexible network structure inside the mold. This allows the mold to absorb energy when subjected to external impact, reducing the possibility of breakage, and also aids in the adhesion between components, improving the overall structural stability.

[0040] According to some embodiments, the upper part of the support mold is a cylinder, and the upper end of the cylinder includes a sample groove for accommodating the sample powder. The lower part of the support mold is a frustum with a diameter smaller than the outer diameter of the cylinder. The overall thickness of the support mold is 8-12 mm, and the diameter is 38-40 mm. For example, the outer diameter of the mold is designed to be 39.7 mm, a size determined through extensive experiments and market research. During the experiments, molds of different diameters were tested, considering factors such as the mold's compatibility with the sample, the molding effect, and the installation stability on the spectrometer sample stage. Simultaneously, dimensional data of mainstream spectrometer sample stages on the market were collected and comprehensively analyzed to determine that this diameter is compatible with mainstream spectrometer sample stages, ensuring the mold's versatility and compatibility in subsequent testing processes, allowing for direct use without additional modifications to the spectrometer sample stage. The design of the support mold combines the advantages of materials science and structural engineering, and is compatible with most spectrometer sample stages currently on the market, making it convenient, practical, and widely applicable.

[0041] According to some embodiments, the powder tableting support mold is composed of a mixture of various components in a specific mass ratio. Optionally, the mass ratio of boric acid is 70% to 80%. The mass ratio of starch is 5% to 12%. The mass ratio of gelatin is 3% to 10%.

[0042] According to some embodiments, the support device further includes a first auxiliary agent and a second auxiliary agent, wherein the first auxiliary agent includes sodium carboxymethyl cellulose (CMC-Na), and the mass percentage of the first auxiliary agent is 5% to 12%. The main function of the first auxiliary agent is to improve the adhesion and moisture resistance of the mold. CMC-Na is a water-soluble polymer compound with good adhesion properties, which can better combine with components such as boric acid and gelatin to enhance the adhesion strength of the entire system. In addition, its moisture resistance can prevent the mold from degrading due to water absorption in humid environments, ensuring the stability of the mold under different environmental conditions.

[0043] According to some embodiments, the second adjuvant includes a lubricant, wherein the mass fraction of the second adjuvant is 0% to 5%. The lubricant can reduce the friction between the components during mixing and pressing, making the mixing more uniform and the pressing process smoother, thus helping to improve the molding quality and production efficiency of the mold.

[0044] According to some embodiments, the powder tableting support mold of the present invention is suitable for various powder samples, including ores, soil, chemical raw materials, etc. The maximum pressure bearing capacity of the support mold is not less than 80t, making it widely applicable to the tableting of various samples. Whether in the field of geological exploration for ore sample testing, in environmental monitoring for soil sample analysis, or in the chemical production process for raw material and product testing, this mold can be used for efficient and high-quality tableting, demonstrating broad application prospects.

[0045] Figure 2 A flowchart illustrating a method for preparing a support mold according to an example embodiment is shown.

[0046] See Figure 2 The figure shows a method for preparing a support mold, and the specific steps are as follows: In S101, raw materials are prepared according to the mass ratio.

[0047] According to some embodiments, the components are weighed according to the mass percentages described above: boric acid: 70%~80%, starch: 5%~12%, gelatin: 3%~10%, and a first excipient (such as sodium carboxymethyl cellulose, CMC-Na): 5%~12%, and a second excipient (lubricant, such as magnesium stearate): 0%~5%. All raw materials should be dried to avoid moisture affecting the uniformity of mixing and subsequent molding results.

[0048] In S103, the raw materials are placed in a stirrer and mixed to obtain a mixed raw material with consistent composition.

[0049] According to some embodiments, the weighed raw materials are added to a high-speed mixer or planetary mixer for thorough mixing. The mixing time is controlled at 10-30 minutes. Specifically, low-speed premixing combined with high-speed homogenization can be used to ensure uniform component distribution. After mixing, let it stand for later use.

[0050] In S105, the mixed raw materials are placed into a molding die and pressurized to obtain the support die.

[0051] According to some embodiments, when the mixed raw material is placed into a molding die for pressure molding, 8-15g of the mixed raw material is placed into the molding die, the applied pressure is not less than 6 tons, and the holding time is not less than 5 seconds. Specifically, not less than 8g of the mixed raw material is loaded into a dedicated molding die cavity and pressure molded using a hydraulic press or an automatic tablet press.

[0052] When determining the pressure value, a series of comparative experiments were conducted on different component ratios, with different pressures applied for each. The experiments revealed that initially, when the applied pressure was too low, the components inside the support mold were not fully compacted, resulting in a loose overall structure and poor impact resistance. With continuous small-scale pressure application, the mold's forming improved slightly, but many defects remained. Although the internal structure of the support mold became denser, its compressive strength was substandard, and its quality stability was poor. At a pressure of 6 tons, the components inside the mold were fully compacted, forming a dense and uniform structure. After testing for strength, impact resistance, and other properties, the structure performed excellently without altering the physicochemical properties of the components. Therefore, preferably, a mold forming pressure of not less than 6 tons is the optimal pressing pressure. After pressing, the mold is demolded to obtain a preliminarily formed support mold.

[0053] According to some embodiments, generally, after the support mold is demolded, the forming mold needs to be trimmed, ground, or surface polished. Dimensional checks are performed to ensure it meets usage requirements. Afterwards, it is cleaned before packaging and sealed to prevent moisture intrusion.

[0054] According to some embodiments, the holding time is at least 5 seconds to achieve rapid molding. Experiments were conducted by setting different holding times. It was found that when the holding time is less than 5 seconds, the internal pressure of the mold is insufficient, gas cannot escape, the molding is incomplete, demolding is prone to breakage, the structure of the supporting mold area is unstable, micro-cracks appear after placement, and the mold quality consistency is poor during mass production. When the holding time is 8 seconds or more, the mold forming rate is stable and high, the cup wall forming effect is ideal, the wall thickness is uniform, and the performance indicators fluctuate little in repeated experiments. Although the molding quality is good when the holding time is too long, the production efficiency decreases, the cost increases, and the performance improvement is not significant. Therefore, the holding time should be at least 5 seconds to ensure high-quality molding while shortening the production time.

[0055] Extensive experimental verification has shown that the optimal total amount of mold materials (boric acid, gelatin, starch, sodium carboxymethyl cellulose, and other additives) is 8-15 grams. When the total amount is too small, the mold structure is loose and lacks strength, resulting in poor sample encapsulation and support. With a total material amount of 8-15 grams, the mold forms well, with a dense and uniform internal structure, a low proportion of sample cracks, and stable spectral detection signals. When the total amount increases to over 15 grams, the internal pressure distribution during pressing becomes uneven, the sample crack rate rises to 15%, the gas escape from the mold is obstructed, numerous air bubbles are present, and the sample crack rate reaches as high as 25%, failing to meet testing requirements. In conclusion, maintaining a total amount of 8-15 grams ensures an optimal balance between product quality, performance, and cost. Example

[0056] 1. Raw material preparation Weigh out 750g of boric acid, 60g of gelatin, 80g of starch, and 80g of sodium carboxymethyl cellulose according to the specified mass ratio, and add an appropriate amount of lubricant (such as 30g of zinc stearate). Place the above ingredients into a mixing container and stir thoroughly until all components are mixed evenly.

[0057] Note: Gelatin particle size is less than 120 mesh.

[0058] 2. Mold assembly According to the design dimensions of the support mold, a suitable self-made split metal mold is assembled to ensure that all parts of the mold are tightly connected without looseness or gaps, thus ensuring the stability of the pressing process and the sealing of the mold.

[0059] 3. Suppression process Pour the well-mixed raw materials into the assembled metal mold, place it on the press, set the pressure to 8 tons, and the holding time to 8 seconds. Start the press to press the raw materials. After pressing is complete, wait for the press pressure to release, carefully disassemble the mold, and remove the formed powder tablet support mold.

[0060] 4. Performance Testing The performance of the molded support is tested to ensure the quality of the finished product.

[0061] According to some embodiments, during pressing, the raw materials mixed in a specific ratio are placed into the self-made split-type metal mold. The metal mold is designed according to the dimensions of the designed support mold. The metal mold adopts a split design, consisting of multiple components, and is reusable. Precise slots, threads, and other connection methods ensure a tight fit during assembly, guaranteeing the integrity and stability of the pressing process. During disassembly, the components can be quickly separated to remove the forming mold. High-strength, wear-resistant high-quality alloy steel is selected as the mold material, and the surface undergoes special treatments such as hard chrome plating to improve wear resistance and corrosion resistance. Before each use, the mold is cleaned and inspected to ensure no debris residue and component damage. After use, rust-preventive oil is applied and the mold is stored properly to extend its service life and reduce production costs.

[0062] Figure 3 A flowchart of a method for compressing sample powder into tablets according to an example embodiment is shown.

[0063] See Figure 3 The figure illustrates a method for compressing sample powder into tablets, the method comprising the following steps: In S301, the sample powder is placed into the sample slot of the support mold as described in any of the preceding claims.

[0064] According to some embodiments, the sample powder to be pressed (such as powder for XRF or FTIR analysis) is uniformly filled into the sample slot at the top of the support mold. During the loading process, clumping or voids should be avoided to ensure uniform powder filling. Specifically, the loading amount can be controlled according to sample requirements, typically 1-5g, which users can flexibly choose based on sample density and actual analytical requirements. The powder particle size should be pre-ground and sieved (e.g., ≤200 mesh) to ensure uniform pressing. If the sample is hygroscopic or highly reactive, the operation should be carried out in a dry or inert gas protected environment to prevent sample deterioration.

[0065] In S303, the support mold and the sample powder are pressurized to obtain a sample tablet.

[0066] According to some embodiments, a support mold containing the sample powder is placed in a tablet press, and pressure is applied to the entire mold using upper and lower punches. The specific pressure and holding time can be selected according to the sample. Generally, a pressure range of 10~40MPa (corresponding to approximately 10~80 tons of equipment pressure) and a holding time of 10~30 seconds are recommended to obtain a denser and flatter tablet. After pressurization, the pressure is released and the mold is demolded, removing the support mold and the sample tablet attached to it.

[0067] Before performing component analysis of the powder sample using X-ray fluorescence spectrometry, the support mold and the sample pellet attached to it are placed directly on the test stage for testing.

[0068] According to some embodiments, the design of this invention employs an integrated rapid tableting process, eliminating the need for layered filling and reducing the tableting time by more than 50% compared to traditional boric acid tableting. Taking batch sample testing as an example, traditional methods may require several hours to complete the tableting of a certain number of samples, while the method of this invention can complete the tableting of the same number of samples in a much shorter time, significantly improving sample preparation efficiency and saving considerable time for subsequent testing, thus meeting the needs of rapid detection.

[0069] According to some embodiments, the design of the present invention reduces the amount of main raw materials such as boric acid, and the cost of composite raw materials is reduced by about 20% compared with the pure boric acid process. In the process of large-scale sample preparation, the reduction in raw material costs will bring significant economic benefits.

[0070] According to some embodiments, the design of this invention uses an integrated pressurization method to compress sample powder into tablets, thereby improving the quality of the tablets and reducing the rate of heavy pressing or scrap due to problems such as air bubbles, cracks, and breakage. The support mold has good air permeability, demolding properties, and pressure-bearing capacity (≥80 tons), which can significantly improve the uniformity and integrity of the compressed samples, enhance the accuracy and repeatability of test data, and reduce resource waste and manual re-inspection costs.

[0071] According to some embodiments, the design of the present invention improves the efficiency of sample tablet production while reducing material costs, has a wide range of applications, is easy to implement, and has strong commercialization capabilities.

[0072] In this specification, “unit” and “module” refer to software and / or hardware that can independently or in conjunction with other components perform a specific function. The hardware may be, for example, a field-programmable gate array (FPGA), an integrated circuit, etc.

[0073] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some service interface; the indirect coupling or communication connection between apparatuses or units may be electrical or other forms.

[0076] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0077] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0078] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage device. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] Exemplary embodiments of this application have been specifically shown and described above. It should be understood that this application is not limited to the detailed structures, arrangements, or implementation methods described herein; rather, this application is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended provisions.

Claims

1. A support mold for pressing sample powder into tablets, characterized in that, The support mold includes boric acid, starch, and gelatin. The upper part of the support mold is a cylinder, and the upper end of the cylinder includes a sample groove for accommodating the sample powder. The lower part of the support mold is a frustum with a diameter smaller than the outer diameter of the cylinder.

2. The supporting mold according to claim 1, characterized in that, The overall thickness of the support mold is 8~12mm, and the diameter is 38~40mm.

3. The supporting mold according to claim 1, characterized in that, The boric acid content is 70% to 80% by mass.

4. The supporting mold according to claim 1, characterized in that, The starch content is 5% to 12% by mass.

5. The supporting mold according to claim 1, characterized in that, The mass percentage of the gelatin is 3% to 10%.

6. The supporting mold according to claim 1, characterized in that, Also includes: The first excipient and the second excipient, wherein the first excipient includes sodium carboxymethyl cellulose, and the mass ratio of the first excipient is 5% to 12%, and the second excipient includes a lubricant, and the mass ratio of the second excipient is 0% to 5%.

7. The supporting mold according to claim 1, characterized in that, The maximum pressure bearing capacity of the supporting mold is not less than 80t.

8. A method for preparing a support mold, characterized in that, include: Prepare raw materials according to the quality ratio; The raw materials are placed in a mixer and mixed to obtain a mixed raw material with consistent composition; The mixed raw materials are placed into a molding die and pressurized to obtain the support die.

9. The preparation method according to claim 8, characterized in that, When the mixed raw materials are placed into the molding mold for pressure molding, the mixed raw materials placed into the molding mold are 8~15g, the external pressure is not less than 6 tons, and the pressure holding time is not less than 5 seconds.

10. A method for compressing sample powder into tablets, characterized in that, The method includes: The sample powder is placed into the sample slot of the supporting mold as described in any one of claims 1-7; The supporting mold and the sample powder are pressurized to obtain a sample tablet.

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