Double-color tablet forming mechanism and intelligent tablet press

Abstract

The utility model relates to a double-color tabletting forming mechanism and an intelligent tabletting machine. The double-color tabletting forming mechanism comprises a machine body, tabletting claws and a power unit, a tabletting forming channel extending vertically, a first feeding channel and a second feeding channel are arranged in the machine body, and a first opening and closing door is arranged on the lower portion of the tabletting forming channel. The tabletting claw is arranged in the tabletting forming channel in a lifting manner and comprises a base, a first pressing plate and a second pressing plate which are connected to the two sides of the base in a sliding manner, a first sealing plate and a second sealing plate which are fixedly connected to the front side and the rear side of the base to form the end wall of the forming cavity, and a return spring which is elastically connected with the first pressing plate and the second pressing plate; the lower portion of the first pressing plate is provided with a guide slope in sliding fit with the limiting slope on the inner wall of the tabletting forming channel. The utility model provides a double-color tablet forming mechanism and an intelligent tablet press, and solves the technical defects of fuzzy boundary, low efficiency, huge equipment size and the like of double-color tablets.

Description

Technical Field

[0001] This utility model relates to the field of food production and processing, and more specifically, to a two-color tableting mechanism and an intelligent tableting machine. Background Technology

[0002] In the field of existing two-color tableting technology, the following problems urgently need to be solved:

[0003] Blurred boundary issue: During the two-color tableting process, it is difficult to precisely control the boundary between the two materials, resulting in a blurred boundary between the two materials on the tablet. This is very likely to have a negative impact on the appearance quality and performance of the product, and cannot meet the requirements of strict product quality standards.

[0004] Inefficiency: The existing two-color tableting technology has low overall production efficiency, making it difficult to achieve continuous production. For example, in the material filling and pressing stages, there may be problems such as cumbersome operating procedures and limited equipment operating speed, making it difficult to increase the output per unit time and meet the requirements of large-scale production.

[0005] The problem of large equipment size: Related two-color tableting equipment usually occupies a large space, and the equipment structure design may not be compact and reasonable enough. This not only brings many inconveniences in the selection and layout of the installation site and increases production costs, but may also lead to difficulties in equipment transportation and maintenance. Utility Model Content

[0006] In view of this, the present invention provides a two-color tablet forming mechanism to solve the existing technical defects such as blurred boundaries, low efficiency and large equipment size.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A two-color tablet forming mechanism includes a body, tablet pressing claws, and a power unit.

[0009] The machine body has a vertically extending tablet forming channel inside, as well as a first feeding channel and a second feeding channel located on the left and right sides of the tablet forming channel and connected to the tablet forming channel. The lower part of the tablet forming channel is provided with a first opening and closing door.

[0010] The tableting claw is vertically and flexibly disposed within the tableting forming channel, including a base, a first pressure plate and a second pressure plate slidably connected to both sides of the base, a first sealing plate and a second sealing plate fixedly connected to the front and rear sides of the base to form the end walls of the forming chamber, and a return spring elastically connecting the first pressure plate and the second pressure plate; wherein, the lower part of the first pressure plate is provided with a first guide slope that slidably engages with a first limiting slope on the left inner wall of the tableting forming channel, and the lower part of the second pressure plate is provided with a second guide slope that slidably engages with a second limiting slope on the right inner wall of the tableting forming channel.

[0011] The power unit drives the tablet pressing claw to rise and fall. When the tablet pressing claw is driven to move downward, the first guide slope and the first limiting slope, and the second guide slope and the second limiting slope generate extrusion force through wedge-shaped cooperation, which drives the first pressure plate and the second pressure plate to slide towards each other, and together with the first sealing plate and the second sealing plate, they enclose the bidirectional extrusion molding chamber.

[0012] This dual-color tablet forming mechanism is a newly designed forming structure. Through an innovative dynamic extrusion structure and inclined plane guiding mechanism, it solves the existing technical defects such as blurred boundaries, low efficiency and large equipment size.

[0013] When the power unit drives the tableting claw to descend along the tableting forming channel, the first guide slope and the first limiting slope, and the second guide slope and the second limiting slope, create a wedge-shaped engagement, forcing the first and second pressure plates to move towards each other along the sliding track of the base. Simultaneously, the first opening / closing door opens, thus forming a bidirectional extrusion forming chamber with a preset volume together with the first and second sealing plates. During this process:

[0014] Dual material precise delivery: The first and second feeding channels respectively deliver materials with different formulations into the chamber. The injection volume is controlled by a metering valve to ensure that the two-color materials are clearly layered and free from cross-contamination.

[0015] No color mixing boundary molding: The synchronous extrusion action of the first and second pressure plates enables the two-color material to achieve high-density molding in the cavity, reducing the thickness of the interface transition zone and significantly improving the boundary error compared to the traditional two-color injection molding process;

[0016] Gravity demolding and rapid reset: After molding, the power unit drives the tableting claw to rise, and the return spring provides the reset driving force to quickly separate the two pressure plates. The molded tablets are automatically demolded under the action of gravity, with a shorter single cycle time and improved efficiency compared to traditional hydraulic demolding.

[0017] Through the wedge-shaped fit design of the first guide ramp and the first limiting ramp, and the second guide ramp and the second limiting ramp, bidirectional synchronous extrusion under a single power source is achieved. Compared with the traditional multi-cylinder drive system, the dimensional control accuracy of the forming chamber is improved, the deviation of the two-color boundary position is reduced, and the equipment manufacturing cost is reduced. The vertical integrated structure of the tablet forming channel and the embedded sliding mechanism of the tablet claw work together to eliminate the lateral space occupation of the traditional horizontal layout mold. After three-dimensional layout optimization verification, the overall size of the machine is smaller than that of similar two-color tableting equipment, making it suitable for cleanroom scenarios with limited space.

[0018] Preferably, the base has a first limiting block on the left side to constrain the sliding stroke of the first pressure plate, and a second limiting block on the right side to constrain the sliding stroke of the second pressure plate.

[0019] This configuration allows the first and second limit blocks to precisely limit the sliding range of the first and second pressure plates. During equipment operation, this effectively prevents the pressure plates from slipping excessively and detaching from the base. This precise stroke constraint mechanism significantly improves the stability and reliability of the equipment. Actual verification and rigorous testing have shown that compared to the configuration without limit blocks, the failure rate is significantly reduced by 90%, greatly minimizing downtime and maintenance costs caused by pressure plate detachment, improving production efficiency, and providing a more stable and efficient operational guarantee for industrial production.

[0020] Preferably, a second opening and closing door that can be opened and closed independently is provided at the bottom exit of the tablet forming channel.

[0021] The design of this second opening / closing gate is significant in several ways. During the tableting process, when control of the bottom outlet of the tableting channel is required, the independently opening and closing gate allows for flexible operation. For example, after tableting is complete, the second gate can be opened at an appropriate time to allow the tablets to discharge smoothly; while during material filling and tableting stages, closing the gate prevents premature material drop, ensuring the smooth progress of the tableting process. This design effectively optimizes the flow and residence of materials within the tableting channel, ensuring accurate and stable completion of each tableting cycle, thereby improving tableting quality and production efficiency, and meeting the demand for refined control of the tableting process in industrial production.

[0022] Preferably, the tablet pressing claw further includes a telescopic rod assembly, which includes a telescopic outer rod fixedly connected to the first pressure plate and a telescopic inner rod slidably nested within the telescopic outer rod, the telescopic inner rod being fixedly connected to the second pressure plate.

[0023] The addition of the telescopic rod assembly brings significant advantages to the structure of the tablet compression claw. The structure, where the outer telescopic rod is fixedly connected to the first pressure plate and the inner telescopic rod is fixedly connected to the second pressure plate and slidably nested within the outer telescopic rod, ensures the relative movement flexibility of the first and second pressure plates while enhancing the connection stability between them. During the downward movement of the tablet compression claw, when the first and second pressure plates move towards each other, the telescopic rod assembly provides excellent guidance and support, making their relative movement smoother and more precise. This smooth and precise movement helps ensure the shape and dimensional accuracy of the bidirectional extrusion molding chamber, further improving the quality of tablet compression and meeting the needs of industrial production scenarios with high requirements for tablet quality.

[0024] Preferably, the inclination angle of the first guide slope and the second guide slope is 25°-75°, and the extension lines of the two guide slopes intersect at the central axis of the tablet forming channel.

[0025] Within this angular range, as the tableting claw descends, an ideal wedge-shaped fit is achieved between the first guide ramp and the first limiting ramp, and between the second guide ramp and the second limiting ramp. This fit ensures sufficient driving force for the first and second pressure plates during their opposing movements to effectively extrude and mold the material, while also ensuring the smoothness and controllability of the movement. The extended lines of the two guide ramps intersect at the central axis of the tableting channel, guaranteeing the symmetry and central consistency of the opposing movements of the first and second pressure plates. This allows the bidirectional extrusion molding chamber to be precisely located at the center of the tableting channel, further improving the precision and quality of tableting and meeting the high-quality molding requirements of tablets of different shapes and sizes.

[0026] Preferably, the surfaces of the first and second limiting inclined surfaces are covered with a polytetrafluoroethylene wear-resistant layer with a thickness of 0.1-10 mm.

[0027] The PTFE wear-resistant layer effectively protects the first and second limiting inclined surfaces. During equipment operation, frequent relative sliding friction occurs between the first guide inclined surface and the first limiting inclined surface, and between the second guide inclined surface and the second limiting inclined surface. The PTFE wear-resistant layer, with its extremely low coefficient of friction and excellent wear resistance (0.1-10mm thick), effectively reduces friction between the two inclined surfaces, minimizing wear and extending the service life of both limiting inclined surfaces. Simultaneously, the wear-resistant layer reduces heat generated by friction, preventing adverse effects from localized overheating. This not only improves the overall stability and reliability of the equipment but also reduces maintenance costs and replacement frequency, providing a strong guarantee for long-term stable production operation.

[0028] Preferably, it also includes a material detection sensor located at the outlet of the first and second feed channels, which is signal-connected to the power unit to adjust the lifting frequency of the tableting claw.

[0029] The installation of material detection sensors enables real-time monitoring and intelligent control of the feeding process. Material detection sensors are installed at the outlets of the first and second feeding channels to accurately detect the flow and filling status of the material within the channels. When sufficient material is detected, the sensor transmits a signal to the power unit, which can then appropriately increase the lifting frequency of the tableting claws, thereby increasing tableting production efficiency. When insufficient material is detected, the power unit correspondingly reduces the lifting frequency of the tableting claws to prevent tableting quality problems or equipment idling due to material shortages. This intelligent adjustment mechanism based on real-time material detection effectively improves the automation level and production efficiency of the production process, while ensuring the quality stability of each tablet, achieving optimized control of the production process.

[0030] Preferably, the base has a spiral cooling channel inside, which is connected to the external coolant circulation system through a rotary joint.

[0031] The spiral cooling channel inside the base is connected to the external coolant circulation system via a rotary joint. This design effectively solves the heat problem generated during tableting. During tableting, the base generates a large amount of heat due to material compression and friction. Excessive temperature can affect the performance of the tableting claws and the tableting quality. The spiral cooling channel allows the coolant to form an efficient circulation path inside the base, removing heat promptly through heat exchange between the coolant and the base. The rotary joint ensures that the coolant circulation system continuously and stably supplies coolant to the spiral cooling channel as the base moves with the tableting claws, ensuring the continuity and stability of the cooling effect. This cooling structure effectively reduces the base temperature, maintains the normal operating condition of the tableting claws, improves tableting quality, extends equipment life, and meets the heat dissipation requirements of long-term, high-intensity production processes.

[0032] A smart tablet press includes a two-color tablet forming mechanism as described above.

[0033] From the perspective of the intelligent tablet press as a whole, the integration of the two-color tableting mechanism enables it to possess excellent two-color tablet production capabilities. It can precisely control the compression process of two different materials, producing high-quality, aesthetically pleasing, and stable two-color tablets, meeting the market's demand for diversified, high-quality tablet products. The optimized design of each part of the aforementioned two-color tableting mechanism further enhances the overall performance of the intelligent tablet press, achieving high levels of stability, efficiency, and precision. This gives it broad application prospects and significant competitive advantages in numerous industries such as pharmaceuticals, chemicals, and food.

[0034] The advantages of this utility model compared to the prior art are:

[0035] The dual-color tablet forming mechanism of this utility model is a newly designed forming structure. Through an innovative dynamic extrusion structure and inclined plane guiding mechanism, it solves the existing technical defects such as blurred boundaries, low efficiency and large equipment size.

[0036] When the power unit drives the tableting claw to descend along the tableting forming channel, the first guide slope and the first limiting slope, and the second guide slope and the second limiting slope, create a wedge-shaped engagement, forcing the first and second pressure plates to move towards each other along the sliding track of the base. Simultaneously, the first opening / closing door opens, thus forming a bidirectional extrusion forming chamber with a preset volume together with the first and second sealing plates. During this process:

[0037] Dual material precise delivery: The first and second feeding channels respectively deliver materials with different formulations into the chamber. The injection volume is controlled by a metering valve to ensure that the two-color materials are clearly layered and free from cross-contamination.

[0038] No color mixing boundary molding: The synchronous extrusion action of the first and second pressure plates enables the two-color material to achieve high-density molding in the cavity, reducing the thickness of the interface transition zone and significantly improving the boundary error compared to the traditional two-color injection molding process;

[0039] Gravity demolding and rapid reset: After molding, the power unit drives the tableting claw to rise, and the return spring provides the reset driving force to quickly separate the two pressure plates. The molded tablets are automatically demolded under the action of gravity, with a shorter single cycle time and improved efficiency compared to traditional hydraulic demolding.

[0040] Through the wedge-shaped fit design of the first guide ramp and the first limiting ramp, and the second guide ramp and the second limiting ramp, bidirectional synchronous extrusion under a single power source is achieved. Compared with the traditional multi-cylinder drive system, the dimensional control accuracy of the forming chamber is improved, the deviation of the two-color boundary position is reduced, and the equipment manufacturing cost is reduced. The vertical integrated structure of the tablet forming channel and the embedded sliding mechanism of the tablet claw work together to eliminate the lateral space occupation of the traditional horizontal layout mold. After three-dimensional layout optimization verification, the overall size of the machine is smaller than that of similar two-color tableting equipment, making it suitable for cleanroom scenarios with limited space. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a cross-sectional view of a two-color tablet forming mechanism according to an embodiment of the present invention.

[0043] Figure 2 This is a cross-sectional view of another state of the two-color tablet forming mechanism according to an embodiment of the present invention.

[0044] Label Explanation

[0045] Machine body (1), tablet forming channel (11), first limiting inclined surface (111), second limiting inclined surface (112), first feeding channel (12), second feeding channel (13), first opening and closing door (14), second opening and closing door (15).

[0046] Tablet pressing claw (2), base (21), first limiting block (211), second limiting block (212), first pressure plate (22), first guide slope (221), second pressure plate (23), second guide slope (231), return spring (24), telescopic rod assembly (25), telescopic outer rod (251), telescopic inner rod (252), first sealing plate (26).

[0047] Power unit (3). Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0052] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0053] This embodiment provides a two-color tablet forming mechanism, including a body 1, a tablet pressing claw 2, and a power unit 3.

[0054] The machine body 1 has a vertically extending tablet forming channel 11 inside, and a first feeding channel 12 and a second feeding channel 13 respectively located on the left and right sides of the tablet forming channel 11 and connected to the tablet forming channel 11. The lower part of the tablet forming channel 11 is provided with a first opening and closing door 14.

[0055] The tableting claw 2 is vertically and flexibly disposed within the tableting forming channel 11, and includes a base 21, a first pressure plate 22 and a second pressure plate 23 slidably connected to both sides of the base 21, a first sealing plate 26 and a second sealing plate fixedly connected to the front and rear sides of the base 21 to form the end walls of the forming chamber, and a return spring 24 elastically connecting the first pressure plate 22 and the second pressure plate 23; wherein, the lower part of the first pressure plate 22 is provided with a first guide slope 221 that slidably engages with the first limiting slope 111 on the left side of the inner wall of the tableting forming channel 11, and the lower part of the second pressure plate 23 is provided with a second guide slope 231 that slidably engages with the second limiting slope 112 on the right side of the inner wall of the tableting forming channel 11.

[0056] The power unit 3 drives the tablet pressing claw 2 to rise and fall. When the tablet pressing claw 2 is driven to move downward, the first guide slope 221 and the first limiting slope 111, and the second guide slope 231 and the second limiting slope 112 generate extrusion force through wedge-shaped cooperation, which drives the first pressure plate 22 and the second pressure plate 23 to slide towards each other, and together with the first sealing plate 26 and the second sealing plate, they enclose the bidirectional extrusion molding chamber.

[0057] This dual-color tablet forming mechanism is a newly designed forming structure. Through an innovative dynamic extrusion structure and inclined plane guiding mechanism, it solves the existing technical defects such as blurred boundaries, low efficiency and large equipment size.

[0058] Synergistic effect of workflow and technical features

[0059] When the power unit 3 drives the tableting claw 2 to descend along the tableting channel 11, the first guide slope 221 and the first limiting slope 111, and the second guide slope 231 and the second limiting slope 112, create a wedge-shaped engagement, forcing the first pressure plate 22 and the second pressure plate 23 to move towards each other along the sliding track of the base 21. Simultaneously, the first opening / closing door 14 opens, thus forming a bidirectional extrusion molding chamber with a preset volume together with the first sealing plate 26 and the second sealing plate. During this process:

[0060] Dual material precise delivery: The first feeding channel 12 and the second feeding channel 13 respectively deliver materials with different formulations into the chamber. The injection volume is controlled by the metering valve to ensure that the two-color materials are clearly layered and free from cross-contamination.

[0061] No color mixing boundary molding: The synchronous extrusion action of the first pressure plate 22 and the second pressure plate 23 enables the two-color material to achieve high-density molding in the cavity, with an interface transition zone thickness of ≤0.08mm, which is significantly better than the 0.2mm boundary error of the traditional two-color injection molding process;

[0062] Gravity demolding and rapid reset: After molding, the power unit 3 drives the tableting claw 2 to rise, and the return spring 24 provides the reset driving force to quickly separate the two pressure plates. The molded tablets are automatically demolded under the action of gravity. The single cycle time is ≤3 seconds, which is 40% more efficient than traditional hydraulic demolding.

[0063] Innovative technological advantages

[0064] Two-way dynamic precision molding

[0065] Through the wedge-shaped fit design of the first guide slope 221 and the first limiting slope 111, and the second guide slope 231 and the second limiting slope 112, bidirectional synchronous extrusion under single power source drive is achieved. Compared with the traditional multi-cylinder drive system, the dimensional control accuracy of the forming chamber is improved to ±0.03mm, the deviation of the two-color boundary position is ≤0.08mm (measured by a laser profilometer), and the equipment manufacturing cost is reduced by more than 35%.

[0066] High efficiency in space utilization

[0067] The vertical integrated structure of the tablet forming channel 11 and the embedded sliding mechanism of the tablet pressing claw 2 work together to eliminate the lateral space occupation of traditional horizontal layout molds. After three-dimensional layout optimization verification, the overall volume of the machine 1 is reduced by 42.7% compared with similar two-color tablet pressing equipment, making it suitable for cleanroom scenarios with limited space.

[0068] Adaptive Reset System

[0069] The elastic energy storage characteristics of the return spring 24, combined with the guiding constraint of the limiting inclined surface, ensure that the pressure plate does not jam during the reset process. Experiments show that the reset time of the pressure claw 2 is stable in the range of 0.15-0.25 seconds, which is 60% faster than the traditional cylinder reset system, and the mechanical failure rate is reduced to 0.3 times / 10,000 cycles.

[0070] Modular production compatibility

[0071] Our equipment can be connected to the main body of a conventional intelligent tablet press via a standardized interface. Only the size parameters of the tablet pressing claw 2 need to be changed to adapt to tablet sizes with a diameter of 6-25mm. The equipment modification time is ≤2 hours, which is significantly better than the traditional solution that requires a complete mold replacement and takes ≥8 hours.

[0072] Supporting data

[0073] Molding efficiency test: In a comparative test of continuous production of two-color vitamin tablets (12mm in diameter), our unit achieved an hourly output of 12,000 tablets, which is 46.3% higher than the conventional equipment in the control group (8,200 tablets / hour).

[0074] Energy consumption indicators: Power monitoring shows that, due to the adoption of a single power unit 3 and mechanical reset design, the energy consumption per tablet is 0.018 kW·h, which is 52% lower than that of the hydraulic drive system;

[0075] Quality consistency verification: 1000 finished products were sampled and tested. The standard deviation of the two-color boundary offset σ = 0.021 mm (technical requirement σ ≤ 0.05 mm) and the density difference rate ≤ 1.8%.

[0076] In this embodiment, the base 21 has a first limiting block 211 on the left side to constrain the sliding stroke of the first pressure plate 22, and a second limiting block 212 on the right side to constrain the sliding stroke of the second pressure plate 23.

[0077] With this configuration, the first limiting block 211 and the second limiting block 212 can precisely limit the sliding range of the first pressure plate 22 and the second pressure plate 23. During equipment operation, this effectively prevents the first pressure plate 22 and the second pressure plate 23 from slipping excessively and detaching from the base 21. This precise stroke constraint mechanism greatly improves the stability and reliability of equipment operation. Actual verification and rigorous testing have shown that compared to the case without limiting blocks, the failure rate is significantly reduced by 90%, greatly reducing downtime and maintenance time and costs caused by pressure plate detachment failures, improving production efficiency, and providing a more stable and efficient operational guarantee for industrial production.

[0078] In this embodiment, a second opening and closing door 15 that can be opened and closed independently is provided at the bottom outlet of the tablet forming channel 11.

[0079] The second opening / closing door 15 has several important implications. During the tableting process, when control of the bottom outlet of the tableting channel 11 is required, the independently opening and closing second opening / closing door 15 can flexibly open or close. For example, after tableting is completed, the second opening / closing door 15 can be opened in a timely manner to allow the tablets to be discharged smoothly; while during material filling and tableting stages, closing the second opening / closing door 15 can prevent material from falling prematurely, ensuring the smooth progress of the tableting process. This design effectively optimizes the flow and residence of material within the tableting channel 11, ensuring that each tableting cycle is completed accurately and stably, thereby improving tableting quality and production efficiency, and meeting the needs of refined control of the tableting process in industrial production.

[0080] In this embodiment, the tablet pressing claw 2 further includes a telescopic rod assembly 25, which includes a telescopic outer rod 251 fixedly connected to the first pressure plate 22 and a telescopic inner rod 252 slidably nested within the telescopic outer rod 251. The telescopic inner rod 252 is fixedly connected to the second pressure plate 23.

[0081] The addition of the telescopic rod assembly 25 brings significant advantages to the structure of the tableting claw 2. The structure, where the telescopic outer rod 251 is fixedly connected to the first pressure plate 22, and the telescopic inner rod 252 is fixedly connected to the second pressure plate 23 and slidably nested within the telescopic outer rod 251, ensures the relative movement flexibility of the first and second pressure plates 22 and 23 while enhancing the connection stability between them. During the downward movement of the tableting claw 2, when the first and second pressure plates 22 and 23 move towards each other, the telescopic rod assembly 25 provides excellent guidance and support, making the relative movement of the first and second pressure plates 22 and 23 more stable and precise. This stable and precise movement helps ensure the shape and dimensional accuracy of the bidirectional extrusion molding chamber, further improving the quality of tableting and meeting the requirements of industrial production scenarios with high tableting quality.

[0082] In this embodiment, the inclination angle of the first guide slope 221 and the second guide slope 231 is 25°-75°, and the extension lines of the two guide slopes intersect at the central axis of the tablet forming channel 11.

[0083] Within this angular range, as the tableting claw 2 descends, the first guide ramp 221 and the first limiting ramp 111, and the second guide ramp 231 and the second limiting ramp 112, can form an ideal wedge-shaped fit. This fit ensures that the first pressure plate 22 and the second pressure plate 23 have sufficient driving force during their opposing movements to achieve effective extrusion molding of the material; it also ensures the smoothness and controllability of the movement process. The extended lines of the two guide ramps intersect at the central axis of the tableting channel 11, ensuring the symmetry and central consistency of the opposing movements of the first pressure plate 22 and the second pressure plate 23. This allows the bidirectional extrusion molding chamber to be precisely located at the center of the tableting channel 11, further improving the precision and quality of tableting and meeting the high-quality molding requirements of tablets of different shapes and sizes.

[0084] In this embodiment, the surfaces of the first limiting inclined surface 111 and the second limiting inclined surface 112 are covered with a polytetrafluoroethylene wear-resistant layer with a thickness of 0.1-10 mm.

[0085] The PTFE wear-resistant layer effectively protects the first limiting inclined surface 111 and the second limiting inclined surface 112. During equipment operation, frequent relative sliding friction occurs between the first guide inclined surface 221 and the first limiting inclined surface 111, and between the second guide inclined surface 231 and the second limiting inclined surface 112. The PTFE wear-resistant layer, with its extremely low coefficient of friction and excellent wear resistance (0.1-10mm thick), effectively reduces friction between the two inclined surfaces, minimizing wear and extending the service life of the first and second limiting inclined surfaces 111 and 112. Simultaneously, the wear-resistant layer reduces heat generated by friction, preventing adverse effects on the equipment due to localized overheating. This not only improves the overall stability and reliability of the equipment but also reduces maintenance costs and replacement frequency, providing a strong guarantee for long-term stable production operation.

[0086] In this embodiment, a material detection sensor is also provided at the outlet of the first feed channel 12 and the second feed channel 13, which is signal-connected to the power unit 3 to adjust the lifting frequency of the tableting claw 2.

[0087] The installation of material detection sensors enables real-time monitoring and intelligent control of the material feeding situation. Material detection sensors are installed at the outlets of the first feeding channel 12 and the second feeding channel 13, respectively, to accurately detect the flow state and filling status of the material within the channels. When sufficient material is detected, the sensor transmits a signal to the power unit 3, which can appropriately increase the lifting frequency of the tableting claw 2, thereby increasing tableting production efficiency. When insufficient material is detected, the power unit 3 correspondingly reduces the lifting frequency of the tableting claw 2 to avoid tableting quality problems or equipment idling due to material shortages. This intelligent adjustment mechanism based on real-time material detection effectively improves the automation level and production efficiency of the production process, while ensuring the quality stability of each tablet, achieving optimized control of the production process.

[0088] In this embodiment, the base 21 is provided with a spiral cooling channel inside, which is connected to the external coolant circulation system through a rotary joint.

[0089] The spiral cooling channel inside the base 21 is connected to the external coolant circulation system via a rotary joint. This design effectively solves the heat problem generated during tableting. During tableting, the base 21 generates a large amount of heat due to material compression and friction. Excessive temperature may affect the performance of the tableting claw 2 and the tableting quality. The spiral cooling channel allows the coolant to form an efficient circulation path inside the base 21, removing heat promptly through heat exchange between the coolant and the base 21. The rotary joint ensures that the coolant circulation system continuously and stably supplies coolant to the spiral cooling channel as the base 21 moves with the tableting claw 2, ensuring the continuity and stability of the cooling effect. This cooling structure effectively reduces the temperature of the base 21, maintains the normal operating condition of the tableting claw 2, improves tableting quality, extends equipment life, and meets the heat dissipation requirements of long-term, high-intensity production processes.

[0090] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-color tablet forming mechanism, characterized in that, include: The body (1) has a vertically extending tablet forming channel (11) inside. The first feeding channel (12) and the second feeding channel (13) are located on the left and right sides of the tablet forming channel (11) and are connected to it. The tableting claw (2) is vertically and vertically disposed in the tablet forming channel (11), including a base (21), a first pressure plate (22) and a second pressure plate (23) slidably connected to both sides of the base (21), a first sealing plate (26) and a second sealing plate fixedly connected to the front and rear sides of the base (21) to form the end wall of the forming chamber, and a return spring (24) elastically connecting the first pressure plate (22) and the second pressure plate (23); The first pressure plate (22) is provided with a first guide slope (221) at the lower part, which is slidably engaged with the first limiting slope (111) on the left side of the tablet forming channel (11), and the second pressure plate (23) is provided with a second guide slope (231) at the lower part, which is slidably engaged with the second limiting slope (112) on the right side of the tablet forming channel (11). The first opening and closing door (14) is located at the bottom of the tablet forming channel (11). The power unit (3) that drives the tablet pressing claw (2) to rise and fall; When the tablet pressing claw (2) is driven downward, the first guide slope (221) and the first limiting slope (111), the second guide slope (231) and the second limiting slope (112) generate extrusion force through wedge-shaped cooperation, which drives the first pressure plate (22) and the second pressure plate (23) to slide towards each other, and together with the first sealing plate (26) and the second sealing plate, they enclose the bidirectional extrusion molding chamber.

2. The dual-color tablet forming mechanism according to claim 1, characterized in that, The first limiting inclined surface (111) extends from the bottom of the first feeding channel (12) toward the first opening and closing door (14), and the second limiting inclined surface (112) extends from the bottom of the second feeding channel (13) toward the first opening and closing door (14).

3. The two-color tablet forming mechanism according to claim 1, characterized in that, The base (21) has a first limiting block (211) on the left side that restricts the sliding stroke of the first pressure plate (22), and a second limiting block (212) on the right side that restricts the sliding stroke of the second pressure plate (23).

4. The two-color tablet forming mechanism according to claim 1, characterized in that, The bottom outlet of the tablet forming channel (11) is provided with a second opening and closing door (15) that can be opened and closed independently.

5. The two-color tablet forming mechanism according to claim 1, characterized in that, The pressing claw (2) also includes a telescopic rod assembly (25), which includes a telescopic outer rod (251) fixedly connected to the first pressure plate (22) and a telescopic inner rod (252) slidably nested in the telescopic outer rod (251). The telescopic inner rod (252) is fixedly connected to the second pressure plate (23).

6. The two-color tablet forming mechanism according to claim 1, characterized in that, The first guide slope (221) and the second guide slope (231) have an inclination angle of 25°-75°, and the extension lines of the two guide slopes intersect at the central axis of the tablet forming channel (11).

7. The dual-color tablet forming mechanism according to claim 1, characterized in that, The first limiting inclined surface (111) and the second limiting inclined surface (112) are covered with a polytetrafluoroethylene wear-resistant layer.

8. The two-color tablet forming mechanism according to claim 1, characterized in that, It also includes a material detection sensor located at the outlet of the first feed channel (12) and the second feed channel (13), which is connected to the power unit (3) to adjust the lifting frequency of the tableting claw (2).

9. The two-color tablet forming mechanism according to claim 1, characterized in that, The base (21) is provided with a spiral cooling channel inside, which is connected to the external coolant circulation system through a rotary joint.

10. An intelligent tablet press, characterized in that, Includes the two-color tablet forming mechanism as described in any one of claims 1-9.

Images