Weighing conveyor structure

Abstract

The application discloses a weighing conveying structure and belongs to the technical field of traditional Chinese medicine formula granule weighing and conveying. The weighing conveying structure comprises a supporting plate, a conveying assembly is fixedly connected to the surface of the supporting plate, a plurality of weighing assemblies are fixedly connected to the surface of the conveying assembly, a material moving assembly is fixedly connected to the surface of the supporting plate and located on the inner side of the conveying assembly, and two clamping assemblies are fixedly connected to the surface of the supporting plate. The weighing assembly is used for placing a film bag, and the weighing assembly is used for weighing granules falling into the film bag. The conveying assembly drives the weighing assembly to realize reciprocating movement. When the granules in the weighing assembly meet the conditions, the granules are pushed out and pulled back by the material moving assembly. The weighing precision and efficiency can be improved on the basis of weighing traditional Chinese medicine granules, and multiple structures can be conveniently maintained.

Description

Technical Field

[0001] This invention relates to the field of weighing and conveying technology for traditional Chinese medicine formula granules, and more specifically, to a weighing and conveying structure. Background Technology

[0002] Traditional Chinese medicine (TCM) granules are made from single-herb TCM decoction pieces through extraction and concentration. They are granules used in TCM clinical prescriptions, making them convenient for patients to use. They preserve all the characteristics of the original TCM decoction pieces, enabling physicians to differentiate syndromes and treat accordingly, and adjust the formula according to the patient's condition. They are potent and highly effective, and also have many advantages such as not requiring decoction, direct administration, small dosage, rapid action, complete ingredients, definite curative effect, safety and hygiene, convenient carrying and storage, easy preparation, and suitability for industrial production.

[0003] Despite continuous advancements in weighing and conveying technology, existing publicly available solutions have inherent flaws in ensuring weighing accuracy. Many current solutions fail to effectively isolate interference forces during the weighing process. For example, in pneumatic conveying weighing systems, negative or positive pressure within the conveying pipeline can be transmitted to the load cells through connecting components, generating unstable tension forces that lead to large fluctuations in weighing readings and compromised accuracy. When material continuously enters the weighing zone on the conveyor belt, material downstream of the weighing section can exert thrust or pressure on the upstream weighing process, causing the measured weight to differ from the independent weight of the target material, thus introducing errors. Furthermore, for materials of considerable length, when the weighing platform has a limited length, the ends of the material may overlap with the upstream and downstream conveyors, preventing the weight from being fully applied to the load cells and resulting in severely inaccurate weighing results. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a weighing and conveying structure. The present invention can not only weigh Chinese medicine granules, but also improve the weighing accuracy and efficiency, and facilitate the maintenance of multiple structures.

[0005] To solve the above problems, the present invention adopts the following technical solution: A weighing and conveying structure includes: a support plate, a conveying assembly fixedly connected to the surface of the support plate, a plurality of weighing components fixedly connected to the surface of the conveying assembly, a material transfer assembly fixedly connected to the surface of the support plate and inside the conveying assembly, and two clamping assemblies fixedly connected to the surface of the support plate. The weighing assembly places the film roll bag, and the particles fall into the film roll bag and are weighed by the weighing assembly. The weighing assembly is driven by the conveying assembly to achieve a cyclical movement. When the particles in the weighing assembly meet the conditions, the material transfer assembly pushes them out and pulls them back. As a preferred embodiment of the present invention, the conveying assembly includes multiple drive wheels rotatably connected to the surface of the support plate and arranged in a rectangular shape. The multiple drive wheels are connected by a drive chain. Multiple mounting plates are fixedly connected to the surface of the drive chain. A first servo motor is fixedly connected to the bottom of the support plate, and the output shaft of the first servo motor is fixedly connected to one of the drive wheels.

[0006] As a preferred embodiment of the present invention, a mounting bracket is fixedly connected to the surface of the mounting plate, and an auxiliary roller is rotatably connected to the surface of the mounting bracket.

[0007] In a preferred embodiment of the present invention, the weighing assembly includes a weighing base fixedly connected to the surface of the mounting plate, a tray fixedly connected to the upper surface of the weighing base, a weighing device fixedly connected inside the tray, and a medicine box disposed inside the tray.

[0008] As a preferred embodiment of the present invention, the surfaces on both sides of the medicine box are provided with limiting protrusions adapted to the tray, the top of the medicine box is provided with a medicine inlet, and the surface of the weighing seat is rotatably connected with an auxiliary wheel, and the auxiliary wheel is in contact with the upper surface of the support plate.

[0009] In a preferred embodiment of the present invention, the material transfer assembly includes a mounting base fixedly connected to the surface of the support plate and located inside the transmission wheel. A threaded rod is rotatably connected to the surface of the mounting base, and a material transfer seat is threadedly connected to the surface of the threaded rod. An installation rod is fixedly connected to the surface of the material transfer seat, and a vacuum suction cup is fixedly connected to one end of the outer side of the installation rod.

[0010] As a preferred embodiment of the present invention, a second servo motor is fixedly connected to the surface of the mounting base, and the output shaft of the second servo motor is fixedly connected to one end of the threaded rod. Guide rods are provided on both sides of the mounting base and on both sides of the threaded rod, and the transfer seat is slidably connected to the surface of the guide rods.

[0011] In a preferred embodiment of the present invention, the clamping assembly includes a folded plate fixedly connected to the surface of a support plate, a gripper rotatably connected to the surface of the folded plate, an electric push rod for longitudinal adjustment fixedly connected to the surface of the folded plate, and a hinge rod for adjusting the gripper rotatably connected to the surface of the piston rod of the electric push rod.

[0012] Compared with the prior art, the advantages of this invention are: (1) The present invention eliminates the mutual interference between materials in continuous conveying by moving the weighing component along with the conveying component. The material is weighed in an independent medicine box with clear mechanical boundaries. The stable support system composed of auxiliary wheels and support plates effectively isolates the vibration caused by the transmission chain, providing the sensor with near-ideal static measurement conditions. This ensures that high-precision weighing can be achieved even during dynamic conveying. Multiple independent workstations operate in parallel and in a cyclical manner, which separates the feeding, weighing and transferring processes in space and overlaps them in time, realizing a true assembly line operation.

[0013] (2) The present invention has a clear function for each of the conveying component, weighing component, material transfer component and clamping component, which are integrated by the support plate. The modular design allows each part to be debugged, calibrated or replaced independently. If a single weighing component fails, it can be quickly disconnected from the mounting plate for replacement without affecting the operation of other workstations. The entire module of the material transfer component can also be disassembled and maintained relatively independently, which solves the maintenance problem and greatly reduces downtime and maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the weighing and conveying structure of the present invention; Figure 2 This is a schematic diagram of the conveying component and the material transfer component in the weighing and conveying structure of the present invention; Figure 3 This is a schematic diagram of a partial structure in the weighing and conveying structure of the present invention; Figure 4 This is a schematic diagram of the weighing component in the weighing and conveying structure of the present invention; Figure 5 This is a schematic diagram of the clamping component in the weighing and conveying structure of the present invention.

[0015] Explanation of the labels in the diagram: 1. Support plate; 2. Conveying assembly; 201. Drive wheel; 202. Drive chain; 203. Mounting plate; 204. First servo motor; 205. Mounting frame; 206. Auxiliary roller; 3. Weighing assembly; 301. Weighing seat; 302. Tray; 303. Weigher; 304. Medicine box; 305. Limiting protrusion; 306. Medicine inlet; 307. Auxiliary wheel; 4. Transfer assembly; 401. Mounting seat; 402. Threaded rod; 403. Transfer seat; 404. Mounting rod; 405. Vacuum suction cup; 406. Second servo motor; 407. Guide rod; 5. Clamping assembly; 501. Folding plate; 502. Gripper; 503. Electric push rod; 504. Hinge rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] Example: Please see Figure 1-5 The weighing and conveying structure includes: a support plate 1, a conveying component 2 fixedly connected to the surface of the support plate 1, a plurality of weighing components 3 fixedly connected to the surface of the conveying component 2, a material transfer component 4 fixedly connected to the surface of the support plate 1 and located inside the conveying component 2, and two clamping components 5 fixedly connected to the surface of the support plate 1. Weighing component 3 places the roll film bag, and the particles fall into the roll film bag and weigh them. The weighing component 3 is driven by the conveying component 2 to achieve a cyclical movement. When the particles in the weighing component 3 meet the conditions, the transfer component 4 pushes them out and pulls them back.

[0018] In a specific embodiment of the present invention, multiple weighing components 3 are fixed on the conveying component 2 and reciprocate with it. Each weighing component 3 is used to carry the roll film bag to be filled. When the granular material falls into the roll film bag, the weighing component 3 weighs it in real time. The control system continuously monitors the weight data. Once the weight of a certain station reaches a preset value, an instruction is issued, and the station moves to the working area of ​​the transfer component 4. The transfer component 4 starts, pushes the weighed roll film bag off the weighing component 3, and transfers it to the next process. Then the transfer component 4 resets. Two clamping components 5 are used to assist in positioning or clamping and fixing the roll film bag in the transfer or other processes to ensure the stability and accuracy of the operation. Under the support of the support plate 1, the entire system realizes a fully automated cycle of feeding, conveying, weighing, judging, and transferring.

[0019] Specifically, the conveying assembly 2 includes multiple drive wheels 201 rotatably connected to the surface of the support plate 1 and arranged in a rectangular shape. The multiple drive wheels 201 are connected by a drive chain 202. Multiple mounting plates 203 are fixedly connected to the surface of the drive chain 202. A first servo motor 204 is fixedly connected to the bottom of the support plate 1. The output shaft of the first servo motor 204 is fixedly connected to one drive wheel 201. A mounting frame 205 is fixedly connected to the surface of one mounting plate 203. An auxiliary roller 206 is rotatably connected to the surface of the mounting frame 205.

[0020] In a specific embodiment of the present invention, multiple transmission wheels 201 are rectangularly distributed and mounted on the support plate 1, forming a closed circular transmission path by a transmission chain 202 connected in series. A first servo motor 204 serves as the power source, driving one of the transmission wheels 201 to rotate, thereby causing the entire transmission chain 202 and the mounting plate 203 fixed on it to perform precise intermittent or continuous movements. Each mounting plate 203 serves as the mounting base for a workstation, supporting a weighing component 3. The use of servo motors allows for high-precision programming control of the conveying speed and start / stop positions, ensuring that each workstation accurately stops at the feeding point, weighing point, and transfer point. The rectangular layout makes the conveying path regular, saves internal space, and facilitates the arrangement of the transfer component 4 fixing mechanism inside the chain.

[0021] Specifically, the weighing component 3 includes a weighing base 301 fixedly connected to the surface of the mounting plate 203, a tray 302 fixedly connected to the upper surface of the weighing base 301, a weighing device 303 fixedly connected inside the tray 302, and a medicine box 304 disposed inside the tray 302.

[0022] In a specific embodiment of the present invention, the weighing base 301 is fixed on the moving mounting plate 203 as a load-bearing base, the tray 302 is fixed on the weighing base 301, and the weighing device 303 is integrated inside the tray. The medicine box 304 is placed on the tray 302. During operation, the granular material falls into the roll film bag inside the medicine box 304 through the feeding mechanism above. The weighing device 303 senses the total weight of the tray 302, the medicine box 304 and the material inside in real time, and transmits the weight signal to the control system. The control system can obtain the net weight of the material by subtracting the tare weight of the tray 302 and the empty medicine box 304.

[0023] Specifically, the surfaces on both sides of the medicine box 304 are provided with limiting protrusions 305 that are adapted to the tray 302, the top of the medicine box 304 is provided with a medicine inlet 306, and the surface of the weighing seat 301 is rotatably connected with an auxiliary wheel 307, and the auxiliary wheel 307 is in contact with the upper surface of the support plate 1.

[0024] In a specific embodiment of the present invention, the medicine box 304 has structures on both sides that are adapted to the shape of the tray 302 to ensure that it can be stably placed on the tray 302 and prevent displacement or tipping during the conveying process. The medicine inlet 306 at the top is used to guide the granular material to fall accurately into the bag and prevent splashing. Another auxiliary wheel 307 is rotatably connected to the weighing seat 301 and contacts the upper surface of the support plate 1, but provides support at the other end of the workstation.

[0025] Specifically, the material transfer assembly 4 includes a mounting base 401 fixedly connected to the surface of the support plate 1 and located inside the transmission wheel 201. A threaded rod 402 is rotatably connected to the surface of the mounting base 401. A material transfer seat 403 is threadedly connected to the surface of the threaded rod 402. A mounting rod 404 is fixedly connected to the surface of the material transfer seat 403. A vacuum suction cup 405 is fixedly connected to one end of the outer side of the mounting rod 404.

[0026] In a specific embodiment of the present invention, when the weighing of a certain workstation reaches the standard, the conveying component 2 transports it to the corresponding position of the transfer component 4 and stops. The mounting base 401 of the transfer component 4 is fixed on the support plate 1. The second servo motor 406 drives the threaded rod 402 to rotate. The transfer seat 403, which is connected to the threaded rod 402 through a threaded pair, converts the rotational motion into precise linear motion under the constraint of the guide rod 407. The transfer seat 403 drives the mounting rod 404 and the vacuum suction cup 405 at the end to extend. The vacuum suction cup 405 adsorbs the weighed medicine box 304. Then the transfer seat 403 moves in the opposite direction to pull it off the tray 302 and transfers it to the designated position before releasing it. After completion, the transfer seat 403 resets and waits for the next work cycle.

[0027] Specifically, a second servo motor 406 is fixedly connected to the surface of the mounting base 401, and the output shaft of the second servo motor 406 is fixedly connected to one end of the threaded rod 402. Guide rods 407 are provided on the surface of the mounting base 401 and on both sides of the threaded rod 402, and the transfer seat 403 is slidably connected to the surface of the guide rods 407.

[0028] In a specific embodiment of the present invention, the second servo motor 406 is directly connected to the threaded rod 402, providing precise rotational power. Two guide rods 407 are arranged in parallel on both sides of the threaded rod 402. When the threaded rod 402 rotates, the transfer seat 403 tends to move under the action of the threaded driving force. However, the guide rods 407 restrict it to slide only along the axial direction and cannot rotate, thereby ensuring that the movement trajectory of the transfer seat 403 and the vacuum suction cup 405 is a strict straight line.

[0029] Specifically, the clamping assembly 5 includes a folded plate 501 fixedly connected to the surface of the support plate 1, a gripper 502 rotatably connected to the surface of the folded plate 501, an electric push rod 503 for longitudinal adjustment fixedly connected to the surface of the folded plate 501, and a hinge rod 504 for adjusting the gripper 502 rotatably connected to the surface of the piston rod of the electric push rod 503.

[0030] In a specific embodiment of the present invention, the clamping assembly 5 is symmetrically arranged on both sides of the conveying path. Its base is a folded plate 501 fixed on the support plate 1. The gripper 502 is mounted on the folded plate 501 through a rotating shaft and can rotate around the shaft. The cylinder of the electric push rod 503 is fixed on the folded plate 501. The end of its piston rod is connected to the non-clamping end of the gripper 502 through a hinge rod 504. When clamping is required, the piston rod of the electric push rod 503 extends and pushes the hinge rod 504. The hinge rod 504 then pushes the gripper 502 to rotate around its rotating shaft, so that the ends of the two grippers 502 come closer to each other, thereby clamping the medicine box 304 located in the middle. When it is necessary to release, the piston rod of the electric push rod 503 retracts and pulls the gripper 502 to rotate in the opposite direction and open through the hinge rod 504.

[0031] The method of using the weighing and conveying structure includes the following steps: After the system starts, the first servo motor 204 drives the conveying assembly 2, which consists of multiple transmission wheels 201 and transmission chains 202, to start running. Multiple mounting plates 203 are fixed at equal intervals on the chain. Each mounting plate 203 carries a complete weighing assembly 3. Empty medicine boxes 304 are placed on the pallet 302 by manual or automatic feeding mechanism. The conveying assembly 2 conveys each station through a fixed feeding point in an intermittent or low-speed continuous motion. At the feeding point, granular material is fed into the roll-film bag inside the moving medicine box 304. At this time, the weighing device 303 integrated inside the tray 302 starts working in real time. It continuously measures the total weight of the tray 302, the medicine box 304 and the material inside, and transmits the data to the central control system in real time. The control system has stored the tare weight values ​​of the tray 302 and the empty medicine box 304 at each station. The net weight of the material is obtained by real-time subtraction. During the entire conveying and feeding process, the auxiliary wheels 307 at the bottom of the weighing seat 301 provide stable support for the moving station and effectively filter the vibration from the chain drive and motor drive, creating a near-static measurement environment for the weighing device 303. This is the key to achieving high-precision dynamic weighing or static weighing. When the control system determines that the net weight of the material in the medicine box 304 at a certain workstation has reached the preset target weight, it stops feeding the workstation. At the same time, the control system records the workstation number and plans its movement path. Under the precise control of the servo motor, the conveying component 2 accurately transports the weighed workstation to the designated position in front of the transfer component 4. During this process, if the design requires the clamping components 5 located on both sides of the position, they can move in advance. The electric push rod 503 drives the gripper 502 to close through the hinge rod 504, gently and firmly clamping the two sides of the medicine box 304, making it accurately positioned and eliminating all shaking. Then the material transfer assembly 4 starts working, the second servo motor 406 starts, driving the threaded rod 402 to rotate. Under the strict guidance of the guide rods 407 on both sides, the material transfer seat 403 drives the mounting rod 404 and the vacuum suction cup 405 to extend smoothly in a straight line. The vacuum suction cup 405 contacts and adsorbs the top or side of the medicine box 304 that has been clamped and fixed. Then the gripper 502 of the clamping assembly 5 is released, the material transfer seat 403 moves in the opposite direction, and smoothly removes the medicine box 304 and the weighed material inside from the tray 302. It is then transferred laterally to the next process receiving port that is perpendicular or parallel to the main conveyor line. After being transferred to the position, the vacuum is released, the medicine box 304 is put down, and the material transfer seat 403 quickly returns to the waiting position. The empty medicine box at station 304, whose material has been removed, returns to the feeding point as the transmission chain 202 continues to circulate, starting a new round of feeding, weighing, and transferring processes.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A weighing and conveying structure, characterized in that, include: A support plate (1) is fixedly connected to a conveying assembly (2), and a plurality of weighing assemblies (3) are fixedly connected to the surface of the conveying assembly (2). A material transfer assembly (4) is fixedly connected to the surface of the support plate (1) and inside the conveying assembly (2). Two clamping assemblies (5) are fixedly connected to the surface of the support plate (1). The weighing component (3) places the roll film bag, and the particles fall into the roll film bag. The weighing component (3) weighs them. The conveying component (2) drives the weighing component (3) to achieve a cyclical movement. When the particles in the weighing component (3) meet the conditions, the transfer component (4) pushes them out and pulls them back.

2. The weighing and conveying structure according to claim 1, characterized in that, The conveying assembly (2) includes a plurality of drive wheels (201) rotatably connected to the surface of the support plate (1) and arranged in a rectangular shape. The plurality of drive wheels (201) are connected by a drive chain (202). A plurality of mounting plates (203) are fixedly connected to the surface of the drive chain (202). A first servo motor (204) is fixedly connected to the bottom of the support plate (1), and the output shaft of the first servo motor (204) is fixedly connected to a drive wheel (201).

3. The weighing and conveying structure according to claim 2, characterized in that, A mounting bracket (205) is fixedly connected to the surface of one of the mounting plates (203), and an auxiliary roller (206) is rotatably connected to the surface of the mounting bracket (205).

4. The weighing and conveying structure according to claim 3, characterized in that, The weighing component (3) includes a weighing base (301) fixedly connected to the surface of the mounting plate (203), a tray (302) fixedly connected to the upper surface of the weighing base (301), a weighing device (303) fixedly connected inside the tray (302), and a medicine box (304) provided inside the tray (302).

5. The weighing and conveying structure according to claim 4, characterized in that, The medicine box (304) has limiting protrusions (305) on both sides that are adapted to the tray (302). The medicine box (304) has a medicine inlet (306) on the top. The surface of the weighing seat (301) is rotatably connected to an auxiliary wheel (307), and the auxiliary wheel (307) is in contact with the upper surface of the support plate (1).

6. The weighing and conveying structure according to claim 5, characterized in that, The material transfer assembly (4) includes a mounting base (401) fixedly connected to the surface of the support plate (1) and located inside the transmission wheel (201). A threaded rod (402) is rotatably connected to the surface of the mounting base (401). A material transfer seat (403) is threadedly connected to the surface of the threaded rod (402). An installation rod (404) is fixedly connected to the surface of the material transfer seat (403). A vacuum suction cup (405) is fixedly connected to one end of the outer side of the installation rod (404).

7. The weighing and conveying structure according to claim 6, characterized in that, The surface of the mounting base (401) is fixedly connected to a second servo motor (406), and the output shaft of the second servo motor (406) is fixedly connected to one end of the threaded rod (402). The surface of the mounting base (401) and both sides of the threaded rod (402) are provided with guide rods (407), and the transfer seat (403) is slidably connected to the surface of the guide rods (407).

8. The weighing and conveying structure according to claim 7, characterized in that, The clamping assembly (5) includes a folded plate (501) fixedly connected to the surface of the support plate (1), a gripper (502) rotatably connected to the surface of the folded plate (501), an electric push rod (503) for longitudinal adjustment fixedly connected to the surface of the folded plate (501), and a hinge rod (504) for adjusting the gripper (502) rotatably connected to the surface of the piston rod of the electric push rod (503).

Images