A traditional Chinese medicine patch medicine filling and forming apparatus

Abstract

The application provides a traditional Chinese medicine patch medicine filling and forming device, which comprises a rack, a base material conveying mechanism, a quantitative filling mechanism and a pressing and forming mechanism arranged in sequence along a conveying direction, a matched storage and feeding mechanism, a visual positioning mechanism and a control system, the base material conveying mechanism is provided with a vacuum positioning jig capable of being quickly disassembled, and is compatible with a full series of non-woven fabric patch base materials with a size of 7*7 cm to 20*20 cm, the storage and feeding mechanism is integrated with a constant-temperature jacket and a low-speed anti-layering stirring structure, a dry-caking prevention closed valve is arranged at a discharging end, stable conveying of traditional Chinese medicine paste with high viscosity and easy dry caking is adapted, the quantitative filling mechanism adopts a sanitary screw quantitative pump and a quick-change discharging nozzle, and combined visual positioning is used to realize accurate filling of the paste in the center, and the pressing and forming mechanism is provided with a self-adapting profiling pressing head with a buffer structure, so that the paste forming thickness is uniform and the edge is neat.

Description

Technical Field

[0001] The present invention relates to the technical field of production equipment for external traditional Chinese medicine preparations, in particular to an integrated mechanical device for quantitative drug filling and compression molding, which is suitable for traditional Chinese medicine acupoint application products such as Sanfu Plasters and Sanjiu Plasters. Background Art

[0002] Traditional Chinese medicine acupoint application is one of the core categories of external therapy of traditional Chinese medicine. Represented by Sanfu Plasters and Sanjiu Plasters, application products have extremely high acceptance among medical institutions and the public nationwide due to their definite clinical effect and convenient use. At present, the preparation of traditional Chinese medicine plasters is still dominated by manual work: operators manually distribute the prepared traditional Chinese medicine ointment onto the non-woven breathable adhesive tape substrate, and then manually level and shape it by a scraper or a pressure plate; The existing manual production mode has obvious defects: Low production efficiency: the daily output of a single worker is limited, it is difficult to cope with the explosive demand during concentrated periods such as the dog days of summer and the nine cold days of winter, and the labor cost is high while the labor intensity is great; Inconsistent quality: the filling amount of ointment depends on manual feel, and the dose error can reach more than ±20%. The spreading thickness and the position of the drug core are greatly affected by the experience of operators, leading to obvious quality fluctuation between batches; Insufficient cleanliness and compliance: the whole process is open manual operation, which is easy to introduce microbial contamination and difficult to meet the production cleanliness requirements for Class I medical devices; Faults in the inheritance of technical talents: the training cycle for skilled plaster spreading workers is long, and young practitioners are unwilling to engage in this work, so traditional skills face the dilemma of inheritance; Although there are general dispensing equipment and traditional plaster coating equipment on the current market, none of them can adapt to the production characteristics of traditional Chinese medicine application: general dispensing equipment is designed for low-viscosity industrial adhesives, and has poor conveying stability for high-viscosity, easily-dried traditional Chinese medicine ointment, which is prone to blockage and has insufficient precision; traditional plaster coating equipment adopts a continuous coil structure, which is suitable for large-scale standardized plaster production, and cannot be directly applied to fixed-point filling and small-batch multi-specification production of prefabricated single-piece non-woven plasters, with high modification cost and poor flexibility; Up to now, there has been no special automatic equipment specially for traditional Chinese medicine application products that integrates quantitative filling and compression molding in the industry, which is difficult to support the standardization and large-scale upgrading of the traditional Chinese medicine application industry. Summary of the Invention

[0003] Aiming at the defects of the prior art, the present invention provides a drug filling and molding device for traditional Chinese medicine application products, which realizes the automation and standardization of application production, solves the defects of low manual production efficiency and large quality fluctuation. Meanwhile, special design is made for the characteristics of high viscosity and easy drying of traditional Chinese medicine ointment, which is compatible with rapid switching production of multi-specification substrates, meets the compliant production requirements of medical institutions and pharmaceutical enterprises, and promotes the upgrading of the traditional traditional Chinese medicine application industry to modern manufacturing.

[0004] The technical solution adopted is: a Chinese herbal patch filling and forming device, the structure of which includes: a frame, a substrate conveying mechanism, a quantitative filling mechanism, a compression forming mechanism, a material storage and feeding mechanism, a vision positioning mechanism, and a control system.

[0005] As a further improvement of the present invention, the substrate conveying mechanism includes a stepping conveying component and a quick-assembly positioning fixture, which is used to carry and fix non-woven fabric adhesive substrates of different specifications.

[0006] As a further improvement of the present invention, the material storage and feeding mechanism is connected to the quantitative filling mechanism via pipeline for storing and stably conveying the traditional Chinese medicine paste. The material storage and feeding mechanism includes a sealed storage tank, which is equipped with a constant temperature jacket and a low-speed stirring assembly. The bottom outlet of the tank is equipped with an anti-drying sealing valve.

[0007] As a further improvement of the present invention, the quantitative filling mechanism includes a screw quantitative pump and a replaceable dispensing nozzle. The screw quantitative pump is used to quantitatively deliver the paste to the dispensing nozzle, which is positioned corresponding to the center of the application substrate.

[0008] As a further improvement of the present invention, the compression forming mechanism is located downstream of the quantitative filling mechanism and includes a lifting drive assembly and an adaptive contouring head. The adaptive contouring head is used to compress the paste filled on the substrate into a preset shape and thickness.

[0009] As a further improvement of the present invention, the visual positioning mechanism is set up at the workstations of the quantitative filling mechanism and the compression forming mechanism respectively, and is used to collect the substrate position signal and feed it back to the control system.

[0010] As a further improvement of the present invention, the control system is electrically connected to the substrate conveying mechanism, the quantitative filling mechanism, the compression forming mechanism, the material storage and feeding mechanism, and the visual positioning mechanism, respectively, for controlling the coordinated operation of each mechanism.

[0011] As a further improvement of the present invention, the positioning fixture is a grooved fixture that matches the shape of the dressing substrate. Vacuum adsorption holes are distributed on the bottom surface of the fixture. The vacuum adsorption holes are connected to a vacuum generator through pipelines. Different specifications of positioning fixtures correspond to dressing substrates with dimensions of 7×7cm, 12×12cm, 15×20cm, and 20×20cm. The fixture is quickly connected to the conveying assembly through a snap-fit ​​structure.

[0012] As a further improvement of the present invention, the top of the sealed storage tank is provided with a sealed feeding port, the low-speed stirring assembly includes a geared motor and a frame-type stirring paddle, the stirring speed range is 5-20 r / min, and the constant temperature jacket 511 is arranged around the side wall of the storage tank, and a constant temperature circulating medium is circulated inside to control the temperature of the paste in the tank at 20-30℃.

[0013] As a further improvement of the present invention, the screw metering pump is a sanitary positive displacement screw pump, the pump body contacting the ointment is made of 316L medical grade stainless steel, the discharge nozzle is connected to the outlet of the screw metering pump through a quick-connect clamp connector, and the outlet size of the discharge nozzle corresponds one-to-one with the core specification of the dressing substrate.

[0014] As a further improvement of the present invention, the pressing surface of the adaptive contouring pressure head is provided with a food-grade non-stick coating, and a buffer spring assembly is provided inside the pressure head to balance the pressure at each point on the pressing surface. The lifting drive component is a servo electric cylinder, which is used to precisely control the downward stroke and pressing pressure of the pressure head. The pressing pressure adjustment range is 5-50N, and the holding time adjustment range is 0.5-3s.

[0015] As a further improvement of the present invention, the visual positioning mechanism includes an upstream positioning camera and a downstream detection camera. The upstream positioning camera is set on the feeding side of the quantitative filling mechanism to identify the center position of the substrate and calibrate the filling point. The downstream detection camera is set on the discharging side of the compression forming mechanism to detect the forming quality and positional deviation of the paste.

[0016] As a further improvement of the present invention, the end of the substrate conveying mechanism is provided with a feeding station, which is equipped with a pneumatic non-conforming product rejection component. The non-conforming product rejection component is electrically connected to the control system and sorts out non-conforming products according to the visual inspection results.

[0017] As a further improvement of the present invention, the control system includes a PLC controller, a touch screen and a parameter storage module. The parameter storage module has multiple sets of production parameters corresponding to different dressing specifications, including filling dosage, pressing pressure, conveying cycle time and holding time, and supports one-click switching and custom saving.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention addresses the characteristics of traditional Chinese medicine pastes, such as high viscosity, easy drying, and temperature sensitivity, by designing a constant-temperature stirring and storage structure with an anti-drying and sealing mechanism. This solves the industry pain points of unstable conveying and easy clogging in general equipment, ensuring the stability of continuous production.

[0019] 2. This invention uses a volumetric screw pump to achieve precise metering, combined with visual positioning for centered filling, and an adaptive contouring pressure head for leveling. The dosage error is ≤±2%, the paste thickness is uniform, the edges are neat, and the product consistency is far superior to manual production, with stable and controllable batch quality.

[0020] 3. This invention is compatible with all mainstream dressing sizes, such as 7×7cm, 12×12cm, 15×20cm, and 20×20cm, by quickly changing the positioning fixture and the dispensing nozzle. The formula can be switched with one click without complicated debugging, which is perfectly suited to the small-batch, multi-variety production scenarios of medical institutions.

[0021] 4. This invention integrates feeding and positioning, quantitative filling, compression forming, detection and sorting into one unit. The production efficiency of a single device can reach 5-8 times that of manual labor, greatly reducing labor costs and labor intensity, and can easily meet the demand during peak production periods. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a device for filling and forming traditional Chinese medicine plasters.

[0023] Figure 2 This is a partial three-dimensional structural diagram of a substrate conveying structure.

[0024] Figure 3 This is a cross-sectional structural diagram of a material storage and supply mechanism.

[0025] Figure 4 This is a three-dimensional structural diagram of a quantitative filling mechanism.

[0026] Figure 5 This is a cross-sectional structural diagram of a compression forming mechanism.

[0027] Figure 6 This belongs to the logic block diagram of the equipment control system.

[0028] In the diagram: Frame-1, Substrate conveying structure-2, Quantitative filling mechanism-3, Compression forming mechanism-4, Material storage and feeding mechanism-5, Vision positioning mechanism-6, Control system-7, Unloading station-8; Conveying assembly-21, positioning fixture-22, vacuum suction hole-221, vacuum generator-222, snap-fit ​​structure-223; Sealed storage tank-51, constant temperature jacket-511, low speed stirring assembly-512, discharge port-513, with anti-drying sealing valve-514; Screw metering pump-31, discharge nozzle-32; Lifting drive assembly-41, adaptive contouring pressure head-42. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: Example: Figures 1 to 6 As shown: This invention provides a device for filling and forming traditional Chinese medicine plasters. Its structure includes: frame 1, substrate conveying mechanism 2, quantitative filling mechanism 3, compression forming mechanism 4, material storage and feeding mechanism 5, vision positioning mechanism 6, and control system 7.

[0030] The substrate conveying mechanism 2 includes a stepping conveying component 21 and a quick-assembly and disassembly positioning fixture 22, which is used to carry and fix non-woven fabric adhesive substrates of different specifications.

[0031] The material storage and feeding mechanism 5 is connected to the quantitative filling mechanism 3 via pipeline and is used to store and stably transport the traditional Chinese medicine paste. The material storage and feeding mechanism 5 includes a sealed storage tank 51, which is equipped with a constant temperature jacket 511 and a low-speed stirring assembly 512. The bottom outlet 513 of the tank is equipped with an anti-drying sealing valve 514.

[0032] The quantitative filling mechanism 3 includes a screw quantitative pump 31 and a replaceable dispensing nozzle 32. The screw quantitative pump 31 is used to quantitatively deliver the paste to the dispensing nozzle 32, which is positioned at the center of the substrate.

[0033] The compression forming mechanism 4 is located downstream of the quantitative filling mechanism 3 and includes a lifting drive assembly 41 and an adaptive contouring head 42. The adaptive contouring head 42 is used to compress the paste filled on the substrate into a preset shape and thickness.

[0034] The visual positioning mechanism 6 is set up at the workstations of the quantitative filling mechanism 3 and the compression forming mechanism 4, respectively, and is used to collect the substrate position signal and feed it back to the control system 7.

[0035] The control system 7 is electrically connected to the substrate conveying mechanism 2, the quantitative filling mechanism 3, the compression forming mechanism 4, the material storage and feeding mechanism 5, and the visual positioning mechanism 6, respectively, and is used to control the coordinated operation of each mechanism.

[0036] The positioning fixture 22 is a grooved fixture that matches the shape of the dressing substrate. Vacuum adsorption holes 221 are distributed on the bottom surface of the fixture. The vacuum adsorption holes 221 are connected to the vacuum generator 222 through pipelines. Different sizes of positioning fixtures correspond to dressing substrates of 7×7cm, 12×12cm, 15×20cm and 20×20cm. The fixture is quickly connected to the conveying assembly 21 through the snap-fit ​​structure 223.

[0037] The sealed storage tank 51 is provided with a sealed feeding port at the top. The low-speed stirring assembly 512 includes a geared motor and a frame-type stirring paddle, with a stirring speed range of 5-20 r / min. The constant temperature jacket 511 is arranged around the side wall of the storage tank 51 and is filled with a constant temperature circulating medium to control the temperature of the paste in the tank at 20-30℃.

[0038] The screw metering pump 31 is a sanitary positive displacement screw pump. The pump body in contact with the ointment is made of 316L medical grade stainless steel. The discharge nozzle 32 is connected to the outlet of the screw metering pump 31 through a quick-connect clamp connector. The outlet size of the discharge nozzle 32 corresponds one-to-one with the core size of the dressing substrate.

[0039] The adaptive contouring pressure head 42 has a food-grade non-stick coating on its pressing surface. The pressure head has a buffer spring assembly inside to balance the pressure at various points on the pressing surface. The lifting drive assembly 41 is a servo electric cylinder used to precisely control the pressing stroke and pressing pressure of the pressure head. The pressing pressure adjustment range is 5-50N, and the holding time adjustment range is 0.5-3s.

[0040] The visual positioning mechanism 6 includes an upstream positioning camera and a downstream detection camera. The upstream positioning camera is set on the feeding side of the quantitative filling mechanism 3 to identify the center position of the substrate and calibrate the filling point. The downstream detection camera is set on the discharging side of the compression forming mechanism 4 to detect the forming quality and positional deviation of the paste.

[0041] The substrate conveying mechanism is equipped with a feeding station 8 at its end. The feeding station 8 is equipped with a pneumatic non-conforming product rejection component. The non-conforming product rejection component is electrically connected to the control system 7 and sorts out non-conforming products according to the visual inspection results.

[0042] The control system 7 includes a PLC controller, a touch screen, and a parameter storage module. The parameter storage module has multiple sets of production parameters corresponding to different dressing specifications, including filling dosage, pressing pressure, conveying cycle time, and holding time, and supports one-click switching and custom saving.

[0043] The specific functions and operation procedures of this embodiment are as follows: In this invention, the main frame 1 of the Chinese herbal patch filling and forming equipment is welded from 304 stainless steel square tubes with a brushed surface, making it corrosion-resistant and easy to clean. Along the conveying direction of the substrate from left to right, the substrate conveying mechanism 2, the quantitative filling mechanism 3, and the compression forming mechanism 4 are installed sequentially on the frame 1. The material storage and feeding mechanism 5 is independently set on the rear side of the frame 1 and is connected to the quantitative filling mechanism 3 through a sanitary hose. The visual positioning mechanism 6 is respectively set above the filling station and the inspection station. The unloading station 8 with a defective product rejection component is set at the right end of the frame 1. The core of the material storage and feeding mechanism 5 is a 10L sealed storage tank 51. The tank body is made of 316L stainless steel, which meets the medical cleanliness requirements. The side wall of the tank is surrounded by a constant temperature jacket 511, which is connected to an external constant temperature water circulation machine to stably control the temperature of the paste inside the tank at 25℃, thus offsetting the influence of ambient temperature fluctuations on the viscosity of the paste. The top of the tank is equipped with a sealed feeding port for adding the prepared Chinese herbal paste. A low-speed stirring component 512 is installed in the center of the tank. The frame stirring paddle is driven by a geared motor and the speed is set to 10r / min. Slow stirring prevents the paste from separating and avoids high-speed stirring from damaging the Chinese herbal components. A pneumatic anti-drying sealing valve 514 is installed at the discharge port 513 at the bottom of the tank. The valve is normally open when the equipment is running and automatically closes when the machine stops to isolate air and prevent the paste from drying and clogging the pipeline. The outlet 513 of the sealed storage tank 51 is connected to the inlet of the screw metering pump 31 of the metering filling mechanism 3 through a food-grade silicone hose. The screw metering pump 31 is a sanitary positive displacement three-screw pump driven by a servo motor. The displacement per revolution is fixed. The filling volume is precisely controlled by controlling the number of revolutions. The metering accuracy for high-viscosity Chinese medicine ointment can reach ±2%. The pump outlet is connected to a replaceable outlet nozzle 32 through a quick-release clamp. The outlet nozzle has a conical converging structure. The outlet diameter can be selected according to the size of the medicine core. For example, a φ20mm outlet nozzle is used when producing 7×7cm patches, and a φ30mm outlet nozzle is used when producing 12×12cm patches. The replacement operation does not require tools and can be completed in 1 minute. The pressing and forming mechanism 4 is fixed above the frame 1 by a portal bracket. The lifting drive component 41 adopts a servo electric cylinder, which is vertically installed at the center of the bracket beam. The stroke accuracy is 0.01mm, which can accurately control the pressing depth and pressure. The lower end of the electric cylinder telescopic rod is connected to the adaptive contouring pressure head 42. The shape of the pressure head matches the design shape of the drug core. The pressure head has 8 sets of buffer springs arranged in a matrix inside, which gives the pressing surface a floating adaptive capability. Even if there is a warping or thickness deviation of less than 0.5mm in the substrate, it can be compensated by spring compression to ensure that the pressure of each point of the paste is uniform and the thickness is consistent. The bottom surface of the pressure head is sprayed with a polytetrafluoroethylene anti-stick coating, which is smooth and non-stick to the paste, ensuring that the surface of the formed drug core is flat and without defects. The stepping conveyor component 21 of the substrate conveying mechanism 2 is a synchronous belt conveyor line driven by a servo motor to achieve precise stepping conveying. Positioning fixtures 22 are installed at equal intervals on the synchronous belt. The fixtures are connected to the synchronous belt through the quick-release buckle structure 223 on the side. They can be removed and replaced by pressing the buckle. The positioning fixture 22 is a recessed groove that matches the shape of the substrate. The depth of the groove is the same as the thickness of the substrate. After the substrate is placed in, the surface is flush, which can achieve rapid coarse positioning. Six vacuum adsorption holes 221 are evenly distributed on the bottom surface of the fixture. They are connected to the vacuum generator on the side of the frame through a rotary joint. After the substrate is placed in, the vacuum is activated to firmly adsorb and fix the substrate. No displacement will occur during the conveying and pressing process. The device is equipped with 4 sets of positioning fixtures, which correspond to four mainstream dressing sizes: 7×7cm, 12×12cm, 15×20cm, and 20×20cm. The replacement time for a single set of fixtures is ≤5 minutes, making it suitable for small-batch production of multiple sizes. The visual positioning mechanism 6 includes two industrial CCD cameras, both of which are vertically mounted above the workstation via a gantry bracket; An upstream positioning camera is installed on the feeding side of the filling station. When the substrate arrives at the filling station with the conveyor line and stops, the camera takes an image of the substrate. The precise center coordinates of the substrate are calculated by the edge recognition algorithm and fed back to the PLC controller to fine-tune the filling point, eliminate substrate placement error and conveying step error, and ensure that the paste is accurately filled in the center of the substrate with a centering deviation of ≤0.5mm. Downstream inspection cameras are installed on the discharge side of the pressing station to collect images of the formed patch. Through algorithm analysis, the diameter, roundness, thickness uniformity, centering deviation, and surface defects such as bubbles and defects of the drug core are automatically determined to determine whether the product is qualified. The defective product rejection component is installed on the side of the end of the unloading station 8 of the conveyor line. It adopts a pneumatic push rod structure. When a defective product is detected to have arrived at the unloading station 8, the PLC sends a signal and the push rod extends to push the defective product to the waste collection box on the other side, so as to realize the automatic sorting of qualified and defective products. The control system 7 uses a PLC controller as the core control unit, and is equipped with a 10-inch touch screen as the human-machine interface, with a built-in parameter storage module. The parameter storage module pre-stores 8 sets of standard production formulas, which correspond to different specifications and different ointment properties of patch products. Each formula includes a complete set of parameters such as filling dosage, delivery cycle, pressing pressure, holding time, and vacuum suction. Operators can simply select the corresponding formula to call it up with one click, or modify the parameters and save it as a new formula. The system has functions such as real-time monitoring of operating status, automatic fault alarm, and production output statistics. All production parameters are traceable and meet the management requirements for compliant production. The complete workflow of this equipment (taking the production of 7×7cm Sanfu Patch as an example) Install the 7×7cm positioning fixture 22, replace the φ20mm discharge nozzle, add the prepared traditional Chinese medicine paste to the sealed storage tank 51, set the constant temperature to 25℃ and the stirring speed to 10r / min; call the "7×7cm Sanfu Patch" formula on the touch screen, confirm the filling dosage of 0.5g, the pressing pressure of 20N, the holding time of 1s, and the cycle time of 2s, place the non-woven breathable tape substrate with release paper into the groove of the positioning fixture 22, start the equipment, the vacuum generator starts to adsorb and fix the substrate, the conveyor line steps to send the substrate to the filling station and pauses, the upstream positioning camera identifies the center of the substrate, after the point is calibrated, the screw metering pump 3 1. Start-up: Precisely extrude 0.5g of paste to the center of the substrate. After filling, the substrate steps to the pressing station. The servo electric cylinder drives the contour pressing head to press down, holding the pressure at 20N for 1 second, pressing the paste into a uniform 40mm round core. Then the pressing head resets, and the formed product is conveyed to the inspection station. The downstream camera detects and judges the product. Qualified products are output from the end unloading station 8. When unqualified products arrive at the unloading station 8, they are pushed into the waste box by the push rod. After production is completed, the equipment is shut down, the remaining paste is discharged, sealed and refrigerated, and the parts that come into contact with the paste, such as the discharge nozzle 32, the conveying pipeline, and the pressing head 42, are disassembled, cleaned and disinfected for the next use.

[0044] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A device for filling and forming traditional Chinese medicine plasters, comprising: The machine frame (1), substrate conveying mechanism (2), quantitative filling mechanism (3), compression forming mechanism (4), material storage and feeding mechanism (5), vision positioning mechanism (6), and control system (7) are characterized in that: The substrate conveying mechanism (2) includes a step conveying assembly (21) and a quick-release positioning fixture (22), which is used to carry and fix non-woven fabric substrates of different specifications. The material storage and feeding mechanism (5) is connected to the quantitative filling mechanism (3) via pipeline and is used to store and stably transport the Chinese medicine paste. The material storage and feeding mechanism (5) includes a sealed storage tank (51). The sealed storage tank (51) is equipped with a constant temperature jacket (511) and a low-speed stirring assembly (512). The bottom outlet (513) of the tank is equipped with an anti-drying sealing valve (514). The quantitative filling mechanism (3) includes a screw quantitative pump (31) and a replaceable dispensing nozzle (32). The screw quantitative pump (31) is used to quantitatively deliver the paste to the dispensing nozzle (32). The dispensing nozzle (32) is set at the center position corresponding to the application substrate. The compression forming mechanism (4) is located downstream of the quantitative filling mechanism (3) and includes a lifting drive assembly (41) and an adaptive contouring head (42). The adaptive contouring head (42) is used to compress the paste filled on the substrate into a preset shape and thickness. The visual positioning mechanism (6) is set up at the workstations of the quantitative filling mechanism (3) and the compression forming mechanism (4) respectively, and is used to collect the substrate position signal and feed it back to the control system (7). The control system (7) is electrically connected to the substrate conveying mechanism (2), the quantitative filling mechanism (3), the compression forming mechanism (4), the material storage and supply mechanism (5), and the visual positioning mechanism (6) respectively, and is used to control the coordinated operation of each mechanism.

2. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The positioning fixture (22) is a grooved fixture that matches the shape of the dressing substrate. Vacuum adsorption holes (221) are distributed on the bottom surface of the fixture. The vacuum adsorption holes (221) are connected to the vacuum generator (222) through pipelines. Different specifications of positioning fixtures correspond to dressing substrates of 7×7cm, 12×12cm, 15×20cm and 20×20cm in size. The fixture is quickly connected to the conveying assembly (21) through a snap-fit ​​structure (223).

3. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The top of the sealed storage tank (51) is provided with a sealed feeding port. The low-speed stirring assembly (512) includes a geared motor and a frame stirring paddle. The stirring speed range is 5-20 r / min. The constant temperature jacket (511) is arranged around the side wall of the storage tank (51) and is filled with a constant temperature circulating medium to control the temperature of the paste in the tank at 20-30℃.

4. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The screw metering pump (31) is a sanitary positive displacement screw pump. The pump body in contact with the ointment is made of 316L medical grade stainless steel. The discharge nozzle (32) is connected to the outlet of the screw metering pump (31) through a quick-connect clamp connector. The outlet size of the discharge nozzle (32) corresponds one-to-one with the core specifications of the dressing substrate.

5. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The adaptive contouring pressure head (42) has a food-grade non-stick coating on its pressing surface. The pressure head is equipped with a buffer spring assembly to balance the pressure at each point on the pressing surface. The lifting drive assembly (41) is a servo electric cylinder to precisely control the pressing stroke and pressing pressure of the pressure head. The pressing pressure adjustment range is 5-50N, and the holding time adjustment range is 0.5-3s.

6. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The visual positioning mechanism (6) includes an upstream positioning camera and a downstream detection camera. The upstream positioning camera is set on the feeding side of the quantitative filling mechanism (3) to identify the center position of the substrate and calibrate the filling point. The downstream detection camera is set on the discharge side of the compression forming mechanism (4) to detect the forming quality and position deviation of the paste.

7. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The end of the substrate conveying mechanism is provided with a feeding station (8), which is equipped with a pneumatic non-conforming product rejection component. The non-conforming product rejection component is electrically connected to the control system (7) and sorts out non-conforming products according to the visual inspection results.

8. The device for filling and forming traditional Chinese medicine plasters according to claim 1, characterized in that: The control system (7) includes a PLC controller, a touch screen and a parameter storage module. The parameter storage module has multiple sets of production parameters corresponding to different dressing specifications, including filling dosage, pressing pressure, conveying cycle and holding time, and supports one-click switching and custom saving.

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