Powdery material sampling and forming device

Abstract

The utility model discloses a powdery material sampling and forming device, which belongs to the technical field of material forming devices and comprises a rack, a tabletting die, a die shifting device, a sampling device and a tabletting device. The sampling device is connected with an unloading conveying pipe of a powder tank truck and is used for collecting a powder sample and conveying the powder sample into the tabletting mold; the tabletting device is mounted on the rack and is used for tabletting the powder sample in the tabletting mold; and the mold shifting device is arranged on the rack and is used for moving the tabletting mold from one position to another position, so that the tabletting mold moves among the positions of the sampling device, the tabletting device and the detection device. The die shifting device can automatically move the tabletting die from a sampling position, a tabletting position to a detection position, so that the connection among multiple processes is realized, the manual intervention is reduced, and the production efficiency and the operation precision are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material forming devices, in particular to a powdery material sampling and forming device. Background Art

[0002] The shaping and forming of powdered materials is a crucial process in modern industrial production, widely used in industries such as pharmaceuticals, food, and chemicals. Powder shaping equipment is typically used to convert loose powdered materials into solid products with a defined shape and density, such as tablets, food blocks, or industrial granules, through compression or other processes. Because these industries place extremely high demands on product quality, shaping accuracy, and production efficiency, powdered material sampling and shaping technologies are particularly critical.

[0003] In the production and processing of powdered materials, sampling and molding operations are core steps to ensure product quality consistency and accuracy. Powdered materials have the characteristics of fine particles and strong fluidity, which makes the sampling and tableting processes more difficult. Traditional sampling and tableting equipment often have difficulty achieving precise control when faced with these physical properties. For example, traditional mold shifting devices often rely on manual operation or simple mechanical structures, resulting in inaccurate positioning of the mold, which is prone to deviations during the tableting process, thereby affecting the molding quality of the product. If the pressure is not properly controlled during the molding process, the pressure will often be too high or too low, resulting in cracks or incomplete molding of the powdered material during tableting.

[0004] Furthermore, traditional sampling devices also have significant design deficiencies, particularly during material feeding and storage, which can easily lead to uneven sampling and even sample contamination. This not only affects the representativeness of the sample, but also reduces the efficiency of subsequent molding operations and the stability of product quality. Utility Model Content

[0005] The purpose of the utility model is to provide a powder material sampling and molding device to solve the problem that mold shifting devices mostly adopt manual or simple mechanical structures, and the positioning of the mold is not accurate, which leads to deviations in the tableting process and affects the molding quality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a powder material sampling and forming device, comprising a frame, a tablet pressing die, a die shifting device, a sampling device and a tablet pressing device;

[0007] The sampling device is connected to the unloading conveying pipe of the powder tanker and is used to collect powder samples and convey them to the tablet pressing mold;

[0008] The tablet pressing device is installed on the frame and is used to tablet the powder sample in the tablet pressing mold;

[0009] The mold shifting device is arranged on the frame, and is used to move the tablet pressing mold from one position to another position, so that the tablet pressing mold moves between the positions of the sampling device, the tablet pressing device and the detection device.

[0010] Preferably, the tablet pressing mold includes an outer mold and a mold core, and the mold core is arranged inside the outer mold.

[0011] Preferably, the mold shifting device includes a driving mechanism and a mold bracket, the driving mechanism is fixed on the frame, the driving mechanism is connected to the moving part of the mold bracket, and the tableting mold is installed on the mold bracket.

[0012] Preferably, the tablet pressing device includes a bottom plate, a top plate, a pressing drive, an upper pressing head and a pressing rod, the bottom plate is fixedly mounted on the frame; the top plate is arranged opposite to the bottom plate, and the top plate is connected to the bottom plate through a connecting member; the pressing drive is mounted on the lower part of the frame; the upper pressing head is mounted on the top plate and cooperates with the tablet pressing mold; the pressing rod is arranged at the output end of the pressing drive to press the powder sample in the tablet pressing mold.

[0013] Preferably, the sheet pressing device further comprises a mold closing spring, and the mold closing spring is arranged on the pressing rod.

[0014] Preferably, the sampling device includes a feeding cylinder, a picking cylinder, a picking piston and a picking drive; the picking cylinder includes a picking section and a discharge section, the picking section is located in the feeding cylinder, and the picking piston is arranged inside the picking cylinder and moves axially along the picking cylinder to transport the powder from the picking section to the discharge section.

[0015] Preferably, the sampling device further comprises

[0016] A sample storage cylinder, the sample storage cylinder is arranged below the unloading section, and a second valve is provided below the sample storage cylinder;

[0017] a pressure relief valve, the pressure relief valve being arranged on the sample storage cylinder;

[0018] A pressure sensor is installed on the feeding cylinder.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the powder material sampling and molding device has strong sample sampling and molding capabilities, and also has high operating accuracy and stability, and is suitable for tableting molding scenarios of powder materials.

[0020] The precise movement of the mold shifting device ensures the stable positioning of the tableting mold between different process positions, avoids molding deviations caused by inaccurate positioning, and improves the operating reliability and molding accuracy of the equipment. At the same time, the mold shifting device can automatically move the tableting mold between the sampling position and the tableting position, realizing the connection between multiple processes, reducing manual intervention, and improving production efficiency and operating accuracy.

[0021] The axial movement of the extraction piston, located within the extraction barrel, precisely controls the collection and delivery of powder, ensuring smooth and complete delivery of powder samples from the extraction section to the discharge section, enhancing the accuracy and reliability of the sampling process. The extraction piston minimizes disturbances to the powder during delivery, reducing sample dispersion and loss during the sampling process, thereby improving sample integrity and representativeness and ensuring the authenticity of the sampling results.

[0022] The tableting device applies uniform vertical pressure through the compacting drive, ensuring that the powder sample is evenly compressed and formed, ensuring sample consistency and quality stability. During the tableting process, the precise fit between the upper pressing head and the die, as well as the pressure transmission structure, ensures tableting accuracy, thereby improving the repeatability of sample quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 This is a schematic diagram of the main structure of the present utility model.

[0025] Figure 3 This is a schematic structural diagram of the tablet pressing mold of the present utility model.

[0026] Figure 4 This is a structural schematic diagram of the mold shifting device of the present utility model.

[0027] Figure 5 This is a schematic structural diagram of the sampling device of the present invention.

[0028] Figure 6 This is a structural schematic diagram of the tablet pressing device of the present utility model.

[0029] Figure 7 This is a schematic diagram of the installation structure of the circumferential drive mechanism of the present utility model.

[0030] Legend: 1. Frame; 2. Tablet pressing mold; 2.1. Outer mold; 2.2. Mold core; 2.3. Mold core stopper; 2.4. Stopper; 3. Mold shifting device; 3.1. Driving mechanism; 3.1.1. Linear driving mechanism; 3.1.2. Circular driving mechanism; 3.2. Mold bracket; 4. Sampling device; 4.1. Feed cylinder; 4.2. Removal cylinder; 4.2.1. Removal section; 4.2.11. Removal port; 4.2.2. Discharging section; 4.2.21, discharging port; 4.3, discharging piston; 4.4, discharging drive; 4.5, first valve; 4.6, sample storage cylinder; 4.7, second valve; 4.8, pressure relief valve; 4.9, pressure sensor; 5, tablet pressing device; 5.1, bottom plate; 5.2, top plate; 5.3, connecting piece; 5.4, pressing drive; 5.5, upper pressure head; 5.6, pressure rod; 5.7, mold closing spring; 5.8, force sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] As shown in the reference figure, the utility model provides a powder material sampling and forming device, which includes a frame 1, a tablet pressing mold 2, a mold shifting device 3, a sampling device 4 and a tablet pressing device 5;

[0033] Specifically, the tableting mold 2 includes an outer mold 2.1 and a core mold 2.2. The core mold 2.2 is a cylindrical structure arranged inside the outer mold 2.1. The outer mold 2.1 is a sleeve-shaped structure with a through-hole design that runs from top to bottom. The through-hole is tightly matched with the core mold 2.2 to ensure that the core mold can remain stable during the tableting process; a core stop platform 2.3 is provided at the lower part of the through-hole. The function of the stop platform 2.3 is to lower the core mold 2.2 to prevent the core mold 2.2 from falling out of the lower part of the outer mold 2.1 due to gravity or other external forces. The stop platform 2.3 not only ensures the safety and stability of the core mold during operation, but also effectively prevents the core mold from accidentally falling off, thereby increasing the operational reliability of the equipment; a stop platform 2.4 is provided on the outer side of the upper end of the outer mold 2.1. The stop table 2.4 is used to precisely cooperate with the mold bracket 3.2 of the mold shifting device 3. Through this cooperation, the mold bracket 3.2 can provide stable support and precise positioning for the tablet pressing mold, thereby ensuring that the tablet pressing mold can maintain a stable posture during various operations (such as tablet pressing, shifting and demoulding) and will not be displaced by external forces, thereby improving the accuracy and consistency of the tablet pressing operation.

[0034] The die shifting device 3 comprises a drive mechanism 3.1 and a die holder 3.2. The drive mechanism 3.1 is fixed to the machine frame 1 and connected to the moving parts of the die holder 3.2. The tableting die 2 is mounted on the die holder 3.2. The die shifting device 3 enables the tableting die 2 to be smoothly moved between different operating positions to accommodate various operational requirements, such as loading, tableting, and testing.

[0035] The driving mechanism 3.1 is preferably a linear driving mechanism 3.1.1. The linear driving mechanism 3.1.1 includes a linear motion component, a guide assembly and a power assembly. The guide assembly is mounted on the frame 1, and the linear motion component is supported and mounted thereon by the guide assembly to ensure the stability and accuracy of its motion path. The power assembly is connected to the linear motion component and drives it to perform reciprocating linear motion along the track of the guide assembly to achieve linear displacement of the mold holder 3.2, thereby driving the tableting mold 2 to move precisely between different positions. The type of power assembly can be diverse, including motors, cylinders, hydraulic cylinders or electric cylinders, etc., and a suitable power source is selected according to the specific application requirements to ensure the efficiency and reliability of the shifting process.

[0036] Furthermore, the drive mechanism 3.1 can also be in the form of a circular drive mechanism. The drive mechanism 3.1 achieves positional changes in the tableting mold 2 through a circular motion assembly. The circular drive mechanism enables the mold holder 3.2 to move along a circular path, thereby flexibly adjusting the working position of the tableting mold 2 to accommodate the requirements of different process steps. Whether a linear drive mechanism or a circular drive mechanism, the mold shifting device 3 ensures precise positioning and stable movement of the tableting mold 2 during various operational steps, such as loading, tableting, and testing, thereby improving the overall efficiency and operational accuracy of the entire device.

[0037] The sampling device 4 includes a feeding barrel 4.1, a collecting barrel 4.2, a collecting piston 4.3, and a collecting drive 4.4. The two ends of the feeding barrel 4.1 are connected to the unloading conveying pipe 8 of the powder tanker, ensuring that the powder can be smoothly transported from the tanker to the sampling device. The collecting barrel 4.2 comprises a segmented structure consisting of a collecting section 4.2.1 and a discharging section 4.2.2. The collecting section 4.2.1 is located within the feeding barrel 4.1, and a collecting port 4.2.11 is provided at the head of the collecting section 4.2.1. The collecting port 4.2.11 faces the direction of the incoming material, allowing the powder to enter the collecting port smoothly during transportation, ensuring the efficiency and quality of sample collection.

[0038] The discharge section 4.2.2 is provided with a discharge port 4.2.21, below which is a first valve 4.5. This valve controls the flow of powder from the discharge port 4.2.21. Below this valve is a sample storage cylinder 4.6, which temporarily stores collected powder samples. A second valve 4.7 is also located below the sample storage cylinder 4.6, allowing the stored sample to be released or processed at an appropriate time.

[0039] Because feeding cylinder 4.1 generates high pressure when feeding, during sampling, when first valve 4.5 is opened and closed, the pressure inside sample storage cylinder 4.6 balances with the pressure inside feeding cylinder 4.1, typically exceeding the ambient atmospheric pressure. To prevent damage to the sample inside the cylinder due to excessive pressure, sample storage cylinder 4.6 is equipped with a pressure relief valve 4.8. When the pressure inside sample storage cylinder 4.6 becomes excessive, this valve opens to release excess pressure, ultimately balancing the pressure inside the cylinder with the ambient atmospheric pressure, ensuring the safety and stability of the sample during storage.

[0040] The sampling piston 4.3 is located within the sampling barrel 4.2 and is driven by the sampling drive 4.4. Driven by the sampling drive 4.4, the sampling piston 4.3 moves axially along the sampling barrel 4.2, smoothly conveying the powder from the sampling section 4.2.1 to the discharge section 4.2.2. This allows the sampling device to precisely control the collection and delivery of the powder sample, ensuring the integrity and representativeness of the sample.

[0041] To further optimize the sampling process, a pressure sensor 4.9 is also installed on the feeding barrel 4.1. This sensor is used to monitor the air pressure within the feeding barrel 4.1 in real time to determine the powder delivery status. This function enables the device to adjust sampling and delivery operations in real time based on pressure changes within the feeding barrel 4.1, ensuring the continuity and efficiency of the sampling process and preventing sampling failures or inaccuracies caused by air pressure fluctuations.

[0042] The tablet pressing device 5 comprises a bottom plate 5.1, a top plate 5.2, a connecting member 5.3 and a pressing drive member 5.4.

[0043] The bottom plate 5.1 is fixed to the frame 1, providing a stable support base for the entire tablet pressing device. The compacting drive 5.4 is mounted on the bottom plate 5.1 and is responsible for providing the required vertical pressure for the tablet pressing process. The bottom plate 5.1 and the top plate 5.2 are arranged parallel to each other to form a parallel and stable structure, ensuring uniform force transmission during the tablet pressing process. The bottom plate 5.1 and the top plate 5.2 are connected by a plurality of connectors 5.3, which not only play a fixing role, but also provide additional support for the stability of the top plate 5.2, preventing structural deformation or displacement caused by uneven pressure during the powder material forming process.

[0044] An upper pressing head 5.5 is provided below the top plate 5.2, and the bottom surface of the upper pressing head 5.5 is arranged parallel to the bottom plate 5.1 to ensure that the pressure applied during tableting is evenly distributed on the tableting mold 2, ensuring the consistency and reliability of the powder material molding quality.

[0045] The pressing drive member 5.4 is provided with a pressing rod 5.6, which is arranged at the output end of the pressing drive member 5.4 to compress the powder sample in the tablet pressing mold 2 under the drive of the pressing drive member 5.4.

[0046] The pressure rod 5.6 is also provided with a mold closing spring 5.7. The mold closing spring 5.7 provides auxiliary pressure during the tableting process to ensure that when the pressing drive is running, pressure can be applied to the outer mold 2.1 smoothly and evenly, avoiding the tableting effect affected by instantaneous pressure fluctuations.

[0047] In the above embodiment, the pressing drive 5.4 can be powered by various sources, including electric cylinders, hydraulic cylinders, pneumatic cylinders, slider-crank mechanisms, or cam mechanisms, depending on specific application requirements. This diverse power selection allows the tableting device to be more adaptable, meeting varying tableting intensity and speed requirements, ensuring optimal tableting results under a variety of process conditions.

[0048] To further enhance the precision and controllability of the tableting process, a force sensor 5.8 is installed between the upper pressing head 5.5 and the top plate 5.2. This sensor monitors the pressure applied to the tableting die in real time, ensuring that each step of the powdered material forming process remains within the optimal pressure range. This improves the precision and consistency of powdered material forming and effectively avoids tableting defects caused by excessive or insufficient pressure.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder material sampling and forming device, characterized in that: It comprises a frame (1), a tablet pressing mold (2), a mold shifting device (3), a sampling device (4) and a tablet pressing device (5); The sampling device (4) is connected to the unloading conveying pipe of the powder tanker and is used to collect the powder sample and convey it to the tablet pressing mold (2); The tablet pressing device (5) is installed on the machine frame (1) and is used to tablet the powder sample in the tablet pressing mold (2); The mold shifting device (3) is arranged on the frame (1), and is used to move the tablet pressing mold (2) from one position to another position, so that the tablet pressing mold (2) moves between the positions of the sampling device (4), the tablet pressing device (5) and the detection device (6).

2. The powder material sampling and forming device according to claim 1, characterized in that: The tablet pressing mold (2) comprises an outer mold (2.1) and a mold core (2.2), and the mold core (2.2) is arranged inside the outer mold (2.1).

3. The powder material sampling and forming device according to claim 2, characterized in that: The mold shifting device (3) comprises a driving mechanism (3.1) and a mold bracket (3.2); the driving mechanism (3.1) is fixed on the frame (1); the driving mechanism (3.1) is connected to a moving part of the mold bracket (3.2); and the tablet pressing mold (2) is mounted on the mold bracket (3.2).

4. The powder material sampling and forming device according to claim 3, characterized in that: The tablet pressing device (5) comprises a bottom plate (5.1), a top plate (5.2), a pressing drive (5.4), an upper pressing head (5.5) and a pressing rod (5.6); the bottom plate (5.1) is fixedly mounted on the frame (1); the top plate (5.2) is arranged opposite to the bottom plate (5.1), and the top plate (5.2) is connected to the bottom plate (5.1) via a connecting member (5.3); the pressing drive (5.4) is mounted on the lower part of the frame (1); the upper pressing head (5.5) is mounted on the top plate (5.2) and cooperates with the tablet pressing mold (2); the pressing rod (5.6) is arranged at the output end of the pressing drive (5.4) to press the powder sample in the tablet pressing mold (2).

5. The powder material sampling and forming device according to claim 4, characterized in that: The sheet pressing device (5) further comprises a mold closing spring (5.7), and the mold closing spring (5.7) is arranged on the pressing rod (5.6).

6. The powder material sampling and forming device according to claim 1, characterized in that: The sampling device (4) comprises a feeding cylinder (4.1), a taking cylinder (4.2), a taking piston (4.3) and a taking drive (4.4); the taking cylinder (4.2) comprises a taking section (4.2.1) and a discharge section (4.2.2); the taking section (4.2.1) is located inside the feeding cylinder (4.1); the taking piston (4.3) is arranged inside the taking cylinder (4.2) and moves along the axial direction of the taking cylinder (4.2) to transport powder from the taking section (4.2.1) to the discharge section (4.2.2).

7. The powder material sampling and forming device according to claim 6, characterized in that: The sampling device (4) further comprises, A sample storage cylinder (4.6), the sample storage cylinder (4.6) is arranged below the unloading section (4.2.2), and a second valve (4.7) is provided below the sample storage cylinder (4.6); a pressure relief valve (4.8), the pressure relief valve (4.8) being arranged on the sample storage cylinder (4.6); A pressure sensor (4.9) is mounted on the feeding cylinder (4.1).

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