Self-cleaning type rotary pressing sheet structure
By introducing an air cavity exchange mechanism between the upper press rod and the piston in the rotary pressing device, the automatic cleaning of the pressing hole is achieved, which solves the problem of difficulty in cleaning residual materials and improves production efficiency and equipment life.
Patent Information
- Application Number
- CN202420666503.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In the existing rotary tablet pressing device, the residual material in the tablet pressing hole is difficult to clean, especially the powder is difficult to flush out after it condenses into blocks, resulting in difficulty in maintaining equipment and low production efficiency.
A self-cleaning rotary tablet structure is designed. Through the cooperation of the upper press rod and the piston, real-time jet and inhalation function of the tablet hole is realized. The gas exchange in the air cavity and the ups and downs of the piston are used to automatically clean the residue. Material to prevent it from condensing into blocks.
Real-time cleaning of tablet press holes is realized, reducing equipment downtime and maintenance time, improving production continuity and efficiency, extending equipment service life, and reducing operational difficulty and maintenance costs.
Smart Images
Figure CN222329136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tabletting medicine, in particular to a self-cleaning rotary tabletting structure. Background Art
[0002] The rotary tablet press is a core component of the tablet press, which is mainly used to press the material into tablets. Its working principle is to make the material under pressure in the mold through rotational motion, thereby completing the tableting process. The rotary tablet press is usually composed of a turntable, a die, a pressing wheel and other components, and has the characteristics of compact structure, simple operation and high production efficiency. In the rotary tablet press, the turntable is one of the key components, on which multiple dies are installed. The number and arrangement of the dies can be adjusted according to production needs. When the turntable rotates, the die moves accordingly, and the material enters the die through the feeding mechanism. At the same time, the pressing wheel applies pressure to the material so that it is pressed into tablets in the die. In order to improve the tableting quality and production efficiency, the rotary tablet press is usually equipped with an automatic adjustment system, which can automatically adjust parameters such as pressure and speed according to the properties of the material and production requirements. In addition, some advanced rotary tablet presses also use intelligent control technology, which can realize remote monitoring and operation, and improve the automation level of the production process. It is necessary to pay attention to keeping the equipment clean and lubricated, and regularly check and replace wearing parts to ensure the normal operation of the equipment and extend its service life.
[0003] In the prior art, the tablet press needs to be cleaned after use. However, due to the presence of multiple tablet pressing holes in the tablet press turntable, a large amount of residual material will be difficult to clean. Generally, it is necessary to blow it out with a high-pressure water gun or air gun. Some residual powder has even condensed into blocks due to the repeated downward pressure of the tablet press and cannot be flushed out. Summary of the invention
[0004] (I) Technical problems solved: In view of the deficiencies of the prior art, the utility model provides a self-cleaning rotary tablet pressing structure with an automatic cleaning function, which can prevent residual powder from condensing into blocks, thus solving the problem of difficulty in cleaning residual materials in the tablet press.
[0005] (ii) Technical solution: In order to achieve the above-mentioned purpose of having an automatic cleaning function and being able to prevent residual powder from condensing into blocks, the utility model provides the following technical solution: a self-cleaning rotary tabletting structure, comprising a workbench, a rotating chassis is provided on the workbench, the upper end of the rotating chassis is connected to the tabletting turntable through a rotating shaft, the tabletting turntable is connected to the driving disc through a rotating shaft, a limiting disc is provided on the upper end of the driving disc, a tabletting hole is provided in the circumferential direction of the tabletting turntable, an upper pressure rod is provided in the tabletting hole, the lower end of the upper pressure rod is connected to the rotating chassis, the upper pressure rod is provided with an air cavity, a piston is provided in the air cavity, the piston is connected to a fixing member through a connecting rod, a pressure rod hole is provided on the driving disc, a lower pressure rod is provided in the pressure rod hole, and the upper end of the lower pressure rod is connected to the limiting disc.
[0006] Preferably, an upper slide groove is provided on the rotating chassis, and a tablet pressing platform is provided on a quarter of the circumferential section of the upper slide groove, and the tablet pressing platform is connected to the other circumferential sections of the rotating chassis through a smooth slope, and an upper clamping joint is provided on the end of the lower end of the upper pressure rod, and the upper clamping joint is clamped with the upper slide groove.
[0007] Preferably, the number of the lower pressure rods is equal to the number of the pressure rod holes on the driving disc, and the number of the pressure rod holes arranged on the driving disc is at least twenty, which are evenly distributed on the outer ring of the driving disc in the circumferential direction.
[0008] Preferably, the rotating chassis is connected to a driver.
[0009] Preferably, a lower sliding groove is provided on the tablet pressing turntable, and a lower clamping joint is provided at the end of the lower end of the upper pressing rod, and the lower clamping joint is clamped with the lower sliding groove.
[0010] (III) Beneficial effects: Compared with the prior art, the utility model provides a self-cleaning rotary tablet pressing structure, which has the following beneficial effects:
[0011] 1. The self-cleaning rotary tablet pressing structure can clean the tablet pressing hole in real time during the tablet pressing process by coordinating the upper pressure rod with the piston. The piston and the connecting rod cooperate with the up and down movement of the upper pressure rod to realize the injection and suction of the tablet pressing hole. During the rising process of the upper pressure rod, the piston moves downward relative to the inner cavity of the upper pressure rod, so that the inner cavity of the upper pressure rod generates low pressure to draw air to the outside. When the tablets are pressed, the upper pressure rod descends. During the descending process, the piston in the inner cavity of the lower pressure rod moves upward relative to the inner cavity of the lower pressure rod, squeezing the air in the inner cavity of the upper pressure rod and discharging the air in the inner cavity of the upper pressure rod. The discharged air blows the material remaining in the tablet pressing hole and blows it out of the tablet pressing hole, thereby achieving a real-time cleaning function and preventing the residual material in the tablet pressing hole from accumulating and condensing into blocks. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the self-cleaning rotary tablet pressing structure in the utility model;
[0013] Figure 2 This is a front view of the self-cleaning rotary tablet pressing structure in the utility model;
[0014] Figure 3 It is a three-dimensional structural schematic diagram of the rotating parts of the self-cleaning rotary tablet pressing structure in the utility model;
[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper pressing rod and the piston assembly of the self-cleaning rotary tablet pressing structure in the utility model;
[0016] Figure 5 This is a cross-sectional view of the assembly of the upper pressure rod and the piston of the self-cleaning rotary pressure plate structure in the utility model.
[0017] In the figure: 1-workbench, 2-rotating chassis, 3-rotating shaft, 4-tablet pressing turntable, 5-driving disc, 6-limiting disc, 7-tablet pressing hole, 8-upper pressure rod, 9-fixing part, 10-piston, 11-connecting rod, 12-lower pressure rod, 13-upper slide groove, 14-driver, 801-upper clamping joint. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-5 , a self-cleaning rotary tablet pressing structure comprises a workbench 1, on which a loading and unloading mechanism and other auxiliary equipment are provided, which are structural components commonly used in the prior art and are not described in detail herein. A rotating chassis 2 is provided on the workbench 1, and the upper end of the rotating chassis 2 is connected to a tablet pressing turntable 4 through a rotating shaft 3, and the tablet pressing turntable 4 is connected to a driving disc 5 through a rotating shaft 3, and a limiting disc 6 is provided at the upper end of the driving disc 5, and a tablet pressing hole 7 is provided in the circumferential direction of the tablet pressing turntable 4, and an upper pressing rod 8 is provided in the tablet pressing hole 7, and the lower end of the upper pressing rod 8 is connected to the rotating chassis 2, and the upper pressing rod 8 is provided with an air cavity, and a piston 10 is provided in the air cavity, and the piston 10 is connected to a fixing member 9 through a connecting rod 11, and a pressing rod hole is provided on the driving disc, and a lower pressing rod 12 is provided in the pressing rod hole, and the upper end of the lower pressing rod 12 is connected to the limiting disc 6.
[0020] The gas circuit is connected to ensure that the air cavity of the upper pressure rod 8 is connected to the external gas source so as to realize the gas exchange in the air cavity. As needed, valves, filters and other accessories can be set on the gas circuit to adjust the gas flow and cleanliness. Turn on the power of the equipment and start the rotation of the rotating chassis 2 and the driving disc 5. As the tableting turntable 4 rotates, the upper pressure rod 8 moves up and down in the tableting hole 7 to complete the tableting operation of the material. At the same time, the lower pressure rod 12 moves synchronously under the drive of the driving disc to assist in completing the tableting process.
[0021] During the tableting process, the up and down movement of the upper pressure rod 8 will drive the piston 10 to move in the air cavity, realizing gas exchange in the air cavity. When the upper pressure rod 8 rises, the piston 10 drops relative to the upper pressure rod 8, the air pressure in the air cavity decreases, and the external air is sucked in; when the upper pressure rod 8 drops, the piston 10 rises relative to the upper pressure rod 8, compresses the air in the air cavity, and sprays the air outward through the upper pressure rod 8. At the same time, the movement of the lower pressure rod 12 will also squeeze the air in the air cavity through the piston 10 inside it, further enhancing the spray effect of the upper pressure rod 8.
[0022] These jet actions will effectively blow and remove the materials remaining in the tableting hole 7, realizing the self-cleaning function. The structure realizes the self-cleaning function of the tableting hole 7 through mechanical movement, without manual intervention, and can remove the residual materials in the tableting hole 7 in real time to prevent material accumulation and condensation. The self-cleaning function reduces the equipment downtime and maintenance time caused by material residue, and improves the continuity and efficiency of tableting production. It reduces equipment damage and maintenance costs caused by material residue, and extends the service life of the equipment. The structure is simple in design and easy to operate, without the need for complicated operating steps and maintenance procedures, reducing the difficulty of operation and labor costs.
[0023] An upper slide groove is provided on the rotating chassis 2, and a tablet pressing platform is provided in a quarter of the circumferential section of the upper slide groove. The tablet pressing platform is connected to the other circumferential sections of the rotating chassis 2 through a smooth landslide. An upper clamping joint is provided at the lower end of the upper pressure rod 8, and the upper clamping joint is clamped with the upper slide groove.
[0024] Through the cooperation of the upper slide and the upper clamping joint, the upper pressing rod 8 can realize accurate positioning and stable motion trajectory on the rotating chassis 2. When the tableting turntable 4 drives the upper pressing rod 8 to rotate to the tableting platform area, the upper pressing rod 8 can accurately align with the tableting platform, thereby ensuring the accuracy and stability of the tableting operation. Since the tableting platform is connected to other sections of the rotating chassis 2 through a smooth landslide, the upper pressing rod 8 can smoothly transition during the tableting process, avoiding the problems of uneven tableting or material scattering caused by sudden height changes, thereby improving the quality and consistency of tableting. By designing the tableting platform of a quarter circumference section, the rhythm and sequence of the tableting operation can be reasonably arranged, making the tableting process more efficient and orderly. At the same time, the design of the landslide also enables the upper pressing rod 8 to move smoothly in the non-tabletting area, ready for the next tableting operation. Through the mechanical connection of the upper slide and the upper clamping joint, additional transmission mechanisms and control systems are reduced, making the entire tableting structure more concise and compact. At the same time, this design also reduces the complexity and difficulty of operation, making it easier for operators to master and use the equipment. The upper chute and upper clamp joint have a reasonable structural design and can withstand greater pressure and friction, thereby improving the durability and service life of the equipment. In addition, since the equipment wear and damage caused by material residue is reduced, the service life of the equipment is further extended.
[0025] The number of the lower pressure rods 12 is equal to the number of pressure rod holes on the driving disc 5. The number of pressure rod holes provided on the driving disc 5 is at least twenty and is equidistantly distributed on the outer ring of the driving disc 5 in the circumferential direction. The rotating chassis 2 is connected to the driver 13. A lower slide groove is provided on the tablet pressing turntable 4, and a lower clamping joint is provided at the end of the lower end of the upper pressure rod 8, and the lower clamping joint is clamped with the lower slide groove.
[0026] The number of the lower pressing rods 12 is equal to the number of the pressing rod holes, ensuring that each tabletting hole 7 has a corresponding lower pressing rod 12 to assist in tabletting. This design makes the pressure distribution during the tabletting process more uniform, and improves the stability and quality of the tabletting. At the same time, the design of equidistant distribution also avoids the problem of inconsistent tabletting effects caused by position differences. The rotating chassis 2 is connected to the driver 13, so that the entire tabletting process can be accurately controlled by the driver 13. This includes the adjustment of key parameters such as rotation speed and tabletting force, thereby ensuring the accuracy and consistency of the tabletting operation. The lower slide groove set on the tabletting turntable 4 and the lower clamping joint design at the lower end of the upper pressing rod 8 make the connection between the upper pressing rod 8 and the tabletting turntable 4 more stable and reliable. This mechanical connection method not only improves the overall stability of the equipment, but also simplifies the operation process and reduces the difficulty of operation.
[0027] Working principle: During the operation of the device, the piston 10 is arranged in the inner cavity of the upper pressure rod 8. As the upper pressure rod 8 fluctuates up and down during the tabletting process, the piston 10 fluctuates in the inner cavity of the upper pressure rod 8. The upper pressure rod 8 rises, and the piston 10 descends relative to the upper pressure rod 8. The air pressure in the inner cavity of the upper pressure rod 8 decreases, absorbing air outward. When the upper pressure rod 8 descends, the piston 10 rises relative to the upper pressure rod 8, compressing the air in the inner cavity of the upper pressure rod 8 so that the upper pressure rod 8 ejects air outward. Through the piston 10 and the connecting rod 11, the upper pressure rod 8 fluctuates up and down to achieve the ejection and suction of the tabletting hole 7. When the piston 10 in the inner cavity of the lower pressure rod 12 moves upward relative to the inner cavity of the lower pressure rod 12, the air in the inner cavity of the upper pressure rod 8 is squeezed to discharge the air in the inner cavity of the upper pressure rod 8. The discharged air blows the material remaining in the tabletting hole 7 and blows it out of the tabletting hole 7, thereby achieving a real-time cleaning function to prevent the residual material in the tabletting hole 7 from accumulating and condensing into blocks.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A self-cleaning rotary tablet pressing structure, comprising a workbench (1), a rotating chassis (2) being arranged on the workbench (1), the upper end of the rotating chassis (2) being connected to a tablet pressing turntable (4) via a rotating shaft (3), the tablet pressing turntable (4) being connected to a driving disc (5) via a rotating shaft (3), a limiting disc (6) being arranged at the upper end of the driving disc (5), characterized in that: The tablet pressing turntable (4) is provided with a tablet pressing hole (7) in the circumferential direction, an upper pressure rod (8) is provided in the tablet pressing hole (7), the lower end of the upper pressure rod (8) is connected to the rotating chassis (2), the upper pressure rod (8) is provided with an air cavity, a piston (10) is provided in the air cavity, and the piston (10) is connected to the fixing member (9) through a connecting rod (11), a pressure rod hole is provided on the driving disc, a lower pressure rod (12) is provided in the pressure rod hole, and the upper end of the lower pressure rod (12) is connected to the limiting disc (6).
2. The self-cleaning rotary tablet pressing structure according to claim 1, characterized in that: The rotating chassis (2) is provided with an upper slide groove, a tablet pressing platform is provided at a quarter of the circumference of the upper slide groove, the tablet pressing platform is connected to the other circumference of the rotating chassis (2) via a smooth slide, and an upper clamping joint (801) is provided at the end of the lower end of the upper pressure rod (8), and the upper clamping joint (801) is mutually clamped with the upper slide groove.
3. The self-cleaning rotary tablet pressing structure according to claim 1, characterized in that: The number of the lower pressure rods (12) is equal to the number of pressure rod holes on the driving disc (5); the number of pressure rod holes provided on the driving disc (5) is at least twenty and is evenly distributed on the outer ring of the driving disc (5) in the circumferential direction.
4. The self-cleaning rotary tablet pressing structure according to claim 1, characterized in that: The rotating chassis (2) is connected to a drive (13).
5. The self-cleaning rotary tablet pressing structure according to claim 1, characterized in that: The tablet pressing turntable (4) is provided with a lower sliding groove, and the lower end of the upper pressing rod (8) is provided with a lower clamping joint, and the lower clamping joint is clamped with the lower sliding groove.