Finished product quantitative packaging and conveying equipment for traditional Chinese medicine decoction piece processing

Abstract

The invention relates to the technical field of traditional Chinese medicine decoction piece packaging, in particular to finished product quantitative packaging and conveying equipment for traditional Chinese medicine decoction piece processing, which comprises a classification conveying device mounted below a packaging machine, and the classification conveying device comprises a linear conveyor, a limiting placement tool, a limiting blanking rail, a continuous pressure measuring device and a classification pushing device; the multiple limiting placing tools are evenly distributed on the linear conveyor and used for limiting and placing the packaging bags. The limiting blanking rail is fixedly mounted on the linear conveyor, and the discharging end of the limiting blanking rail is arranged above the limiting placing tool; the continuous pressure measuring device is arranged on the side of the limiting blanking rail, is fixedly connected with the linear conveyor, is provided with a plurality of detection ends and is used for detecting the sealing performance of the packaging bag; and the classified pushing device is arranged beside the continuous pressure measuring device. The packaging quality and the packaging efficiency can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine decoction piece packaging technology, specifically to a finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces. Background Technology

[0002] As a primary form of clinical application in Traditional Chinese Medicine (TCM), the quality stability and storage safety of prepared herbal pieces are of paramount importance. After processing, prepared herbal pieces often require small-dose quantitative packaging for easy dispensing, sales, and patient use. During this process, the airtightness of the packaging is crucial to protecting the prepared herbal pieces from deliquescence, oxidation, insect infestation, and microbial contamination. Therefore, rapid and accurate airtightness testing of the finished product after packaging has become an indispensable quality control step in the TCM prepared herbal piece processing production line.

[0003] With the development of intelligent manufacturing technology, traditional packaging inspection methods relying on manual visual inspection or random sampling are no longer sufficient to meet the efficiency and consistency requirements of large-scale, continuous production. Therefore, the industry has successively proposed various automated equipment integrating weighing, packaging, and inspection functions. For example, Chinese Patent No. CN118289257B discloses a fully automatic small-dose weighing and packaging machine based on an intelligent platform. This equipment, through the collaboration of an elastic conveyor belt, a rotary weighing mechanism, and a bag-making and sealing system, realizes the automatic feeding, filtering, quantitative weighing, and packaging of traditional Chinese medicine decoction pieces. Its particularly prominent innovation lies in the integration of an automatic inspection component based on machine vision: pressure is applied to the packaging bag using a pressure plate, and a monitoring camera captures the movement of the surrounding ribbons after the bag is compressed. Combined with image recognition algorithms, it determines whether the packaging is leaking or empty, and then a pusher performs automatic sorting.

[0004] This technical solution offers a novel approach to online, non-destructive testing of packaging seals, reducing the burden of manual re-inspection to some extent. However, in practical production applications, especially for materials like traditional Chinese medicine decoction pieces that require extremely high moisture resistance, this testing method still has significant limitations. The main problem is that when there are micron-sized pores or minor gaps in the packaging seal, the gas leakage rate and flow are low under the brief, intermittent pressing of the pressure plate, resulting in insufficient airflow to drive the relatively large ribbon to move with sufficient amplitude. Coupled with interference factors such as ambient light and vibration in industrial environments, image recognition systems are prone to misinterpreting these weak signals as acceptable, leading to the failure to detect slowly leaking defective packaging. Once such packaging enters the market, the decoction pieces will gradually become damp and deteriorate during storage and transportation, causing quality problems and safety risks. Therefore, existing airflow-driven and visual discrimination-based detection modes inherently lack sensitivity and reliability in detecting minute leaks, making it difficult to meet the high-requirement monitoring needs of products like traditional Chinese medicine decoction pieces for reliable packaging seal monitoring. Summary of the Invention

[0005] To address the aforementioned issues, a finished product quantitative packaging and conveying device for processing Chinese herbal medicine slices is provided. Through a classification and conveying device, the packaging quality and efficiency of Chinese herbal medicine slices can be effectively improved.

[0006] To address the problems of existing technologies, this invention provides a finished product quantitative packaging and conveying device for processing traditional Chinese medicine decoction pieces, comprising a sorting and conveying device installed below a packaging machine. The sorting and conveying device includes a linear conveyor, limiting placement fixtures, limiting discharge rails, a continuous pressure measuring device, and a sorting and pushing device. Several limiting placement fixtures are evenly distributed on the linear conveyor, and are used to limit the placement of packaging bags. The limiting discharge rails are fixedly installed on the linear conveyor, with their discharge ends positioned above the limiting placement fixtures. The continuous pressure measuring device is located beside the limiting discharge rails and is fixedly connected to the linear conveyor. The continuous pressure measuring device has several detection ends and is used to detect the sealing performance of the packaging bags. The sorting and pushing device is located beside the continuous pressure measuring device and is fixedly connected to the linear conveyor.

[0007] Preferably, the bottom of the limiting placement device is fixedly connected to the linear conveyor, the limiting placement device has a limiting placement groove inside, multiple positioning holes on the limiting placement device, a material discharge port on the side of the limiting placement device, two movable adjustment plates inside the limiting placement device, and a bidirectional adjustment screw installed on the limiting placement device, which is threadedly connected to the two movable adjustment plates.

[0008] Preferably, the limiting placement device further includes an automatic adjustment device for adjusting the movable adjustment plate. The automatic adjustment device includes a rotary drive device and an adjustment limiting device, which are respectively disposed on both sides of the limiting placement device. The rotary drive device is used to drive the bidirectional adjustment screw to rotate, and the adjustment limiting device is used to limit the position of the movable adjustment plate.

[0009] Preferably, the rotary drive device includes a first mounting bracket, a first linear driver, a first bidirectional lead screw slide, and a drive coupling; the first mounting bracket is fixedly mounted on the linear conveyor; the first bidirectional lead screw slide is slidably mounted on the first mounting bracket and is horizontally positioned; two drive couplings are provided and evenly distributed at the movable end of the first bidirectional lead screw slide, and the drive couplings are fixedly connected to the movable end of the first bidirectional lead screw slide; the first linear driver is fixedly mounted on the first mounting bracket, and the output end of the first linear driver is fixedly connected to the first bidirectional lead screw slide.

[0010] Preferably, the drive coupling includes a first rotary driver, a drive shaft, a movable mounting block, a docking sleeve, a first spring, a driven gear, and a drive gear; the drive shaft is rotatably mounted on a first bidirectional lead screw slide; the movable mounting block is fixedly mounted on the movable end of the first bidirectional lead screw slide; the docking sleeve is slidably mounted on the movable mounting block, and the docking sleeve has a docking groove inside, which matches the end of the bidirectional adjusting screw; the first spring is disposed between the docking sleeve and the movable mounting block; the driven gear is fixedly connected to the docking sleeve; the drive gear is rotatably mounted on the movable mounting block and rotatably connected, and the axis of the drive gear is slidably connected to the drive shaft, and the drive gear and the driven gear mesh with each other; the first rotary driver is fixedly mounted on the first bidirectional lead screw slide, and the output end of the first rotary driver is drively connected to the drive shaft.

[0011] Preferably, the adjusting limit device includes a second mounting bracket, a second rotary driver, a rotating mounting frame, and a limit adjusting mechanism; the second mounting bracket is fixedly connected to the linear conveyor; the rotating mounting frame is rotatably mounted on the second mounting bracket; the second rotary driver is fixedly mounted on the second mounting bracket, and the output end of the second rotary driver is drively connected to the rotating mounting frame; the limit adjusting mechanism is mounted on the rotating mounting frame.

[0012] Preferably, the limit adjustment mechanism includes a limit contact frame, a second linear actuator, a connecting block, and connecting rods; there are two limit contact frames, which are slidably connected to the rotating mounting frame, and a ball bearing slide is provided on the side of the limit contact frame, with a first pressure sensor installed between the ball bearing slide and the limit contact frame; the second linear actuator is fixedly mounted on the rotating mounting frame; the connecting block is fixedly mounted on the output end of the second linear actuator; there are two connecting rods distributed on the limit contact frame, with one end of the connecting rod rotatably connected to the limit contact frame, and the end of the connecting rod away from the limit contact frame rotatably connected to the connecting block.

[0013] Preferably, the limiting material discharge rail is fixedly installed on the linear conveyor. The bottom of the limiting material discharge rail is an inclined surface. The bottom of the inclined slide rail is also provided with a material discharge port. An infrared sensor is provided below the material discharge port. The limiting material discharge rail is provided with a third bidirectional screw slide. Two guide plates are installed on the movable end of the third bidirectional screw slide. One end of the guide plate is fixedly connected to the movable end of the third bidirectional screw slide. An elastic guide belt is provided between the guide plate and the inclined slide rail.

[0014] Preferably, the continuous pressure measuring device includes a circulating conveyor, a docking mounting frame, a second spring, a pressing strip, and a third spring; the circulating conveyor is fixedly installed above the linear conveyor, and guide rails are installed at both ends of the circulating conveyor; several docking mounting frames are provided and evenly distributed on the circulating conveyor, the docking mounting frames are slidably connected to the circulating conveyor, a second pressure sensor is provided on the docking mounting frame, and multiple docking protrusions are also provided on the docking mounting frame, and sliding rollers are installed on the side of the docking mounting frame; several second springs are provided and evenly distributed between the docking mounting frame and the circulating conveyor; several pressing strips are provided and evenly distributed on the docking mounting frame, and the pressing strips are slidably installed on the docking mounting frame; several third springs are provided and evenly distributed between the pressing strips and the second pressure sensor.

[0015] Preferably, the sorting and pushing device includes a third mounting frame, a third linear driver, and a push plate; the third mounting frame is fixedly mounted on the linear conveyor; the third linear driver is fixedly mounted on the third mounting frame, and the output end of the third linear driver extends toward the limiting placement device; the push plate is fixedly mounted on the output end of the third linear driver.

[0016] The advantages of this invention compared to the prior art are: 1. This invention utilizes a continuous pressure measuring device to synchronously press and move the packaging bag while the linear conveyor drives the limiting placement device. This continuous pressing method extends the pressing time, allowing sufficient time for gas to leak when the packaging bag has micron-sized holes or minor defects such as poor adhesion, resulting in more noticeable pressure changes. By repeatedly detecting and comparing pressure values, the continuous pressure measuring device can accurately detect pressure differences caused by minute leaks, effectively solving the problems of low sensitivity and susceptibility to interference leading to misjudgments in existing technologies. This significantly improves the reliability of detection and meets the requirements for reliable monitoring of the sealing of traditional Chinese medicine decoction pieces packaging.

[0017] 2. This invention integrates a linear conveyor, a limiting placement fixture, a limiting drop rail, a continuous pressure measuring device, and a sorting and pushing device to form a complete automated inspection process. After the packaging machine completes packaging, the packaging bags accurately fall into the limiting placement fixture via the limiting drop rail. The linear conveyor drives its movement, and the continuous pressure measuring device completes the inspection during the movement. Finally, the sorting and pushing device pushes leaking packaging bags to the non-conforming product area based on the inspection results. The entire process requires minimal manual intervention, achieving online, efficient, and automated inspection and sorting of the sealing properties of traditional Chinese medicine decoction piece packaging bags. This reduces the burden of manual re-inspection, improves production efficiency, and ensures product quality and safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a finished product quantitative packaging and conveying device for processing Chinese herbal medicine slices according to the present invention. Figure 1 .

[0019] Figure 2 This is a three-dimensional schematic diagram of a finished product quantitative packaging and conveying device for processing Chinese herbal medicine slices according to the present invention. Figure 2 .

[0020] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0021] Figure 4 This is a three-dimensional schematic diagram of a limiting placement device in a finished product quantitative packaging and conveying equipment for processing Chinese herbal medicine slices according to the present invention.

[0022] Figure 5 This is a three-dimensional schematic diagram of a rotary drive device in a finished product quantitative packaging and conveying equipment for processing Chinese herbal medicine slices according to the present invention.

[0023] Figure 6 yes Figure 5 A magnified view of a section at point B.

[0024] Figure 7 This is a three-dimensional schematic diagram of an adjusting limit device in a finished product quantitative packaging and conveying equipment for processing Chinese herbal medicine slices according to the present invention.

[0025] Figure 8 This is a three-dimensional schematic diagram of a limiting material discharge rail in a finished product quantitative packaging and conveying equipment for processing Chinese herbal medicine slices according to the present invention.

[0026] Figure 9 This is a three-dimensional schematic diagram of a continuous pressure measuring device in a finished product quantitative packaging and conveying equipment for processing Chinese herbal medicine slices according to the present invention.

[0027] Figure 10 yes Figure 9 A magnified view of a section at point C.

[0028] The numbers on the map are: 1. Linear conveyor; 2. Limiting and placing device; 21. Limiting and placing groove; 22. Movable adjusting plate; 23. Positioning hole; 24. Bidirectional adjusting screw; 25. Discharge port; 26. Rotary drive device; 261. First mounting bracket; 262. First linear actuator; 263. First bidirectional screw slide; 264. Drive coupling; 2641. First rotary actuator; 2642. Drive shaft; 2643. Movable mounting block; 2644. Connecting sleeve; 2645. First spring; 2646. Driven gear; 2647. Drive gear; 27. Adjusting and limiting device; 271. Second mounting bracket; 272. Second rotary actuator; 273. Rotary mounting plate Mounting frame; 2741, Limiting contact frame; 2742, Second linear actuator; 2743, Connecting block; 2744, Connecting rod; 2745, Ball bearing slide; 3, Limiting discharge rail; 31, Inclined surface; 32, Vibration motor; 33, Guide plate; 34, Elastic guide belt; 35, Third bidirectional screw slide; 4, Continuous pressure measuring device; 41, Circulating conveyor; 411, Guide rail; 42, Docking mounting frame; 421, Docking block; 422, Second pressure sensor; 423, Sliding roller; 43, Second spring; 44, Pressing strip; 45, Third spring; 5, Classification and pushing device; 51, Third mounting frame; 52, Push plate; 53, Third linear actuator. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 10 As shown, a finished product quantitative packaging conveying equipment for processing Chinese herbal medicine slices includes a sorting conveying device installed below the packaging machine. The sorting conveying device includes a linear conveyor 1, a limiting placement device 2, a limiting discharge rail 3, a continuous pressure measuring device 4, and a sorting pushing device 5. Several limiting placement devices 2 are provided and evenly distributed on the linear conveyor 1. The limiting placement devices 2 are used to limit the placement of packaging bags. The limiting discharge rail 3 is fixedly installed on the linear conveyor 1, and the discharge end of the limiting discharge rail 3 is located above the limiting placement device 2. The continuous pressure measuring device 4 is located beside the limiting discharge rail 3 and is fixedly connected to the linear conveyor 1. The continuous pressure measuring device 4 has several detection ends and is used to detect the sealing performance of the packaging bags. The sorting pushing device 5 is located beside the continuous pressure measuring device 4 and is fixedly connected to the linear conveyor 1.

[0031] After the packaging machine completes the packaging of Chinese herbal medicine slices, the packaging bags containing the Chinese herbal medicine slices fall into the limiting feed rail 3. The limiting feed rail 3 accurately conveys the packaging bags to the limiting placement device 2 below, achieving the initial positioning of the packaging bags.

[0032] The linear conveyor 1 starts, driving the limiting placement device 2 to move. The limiting placement device 2 moves to below the continuous pressure measuring device 4, at which point the working end of the continuous pressure measuring device 4 applies limiting pressure to the packaging bag on the limiting placement device 2.

[0033] When the packaging bag is initially pressed, the working end of the continuous pressure measuring device 4 will detect the pressure value that the packaging bag is subjected to at this time, and record the pressure value as the initial pressure value.

[0034] As the linear conveyor 1 continues to move, driving the limiting device 2, the continuous pressure measuring device 4 moves synchronously and continuously presses the packaging bag. This synchronous movement and pressing method ensures that the packaging bag is continuously pressed during the conveying process, effectively extending the pressing time. The longer pressing time helps allow sufficient time for gas to leak out when there are small holes in the packaging bag, thus creating a more obvious pressure change, which is convenient for subsequent detection and identification.

[0035] The linear conveyor 1 continuously moves the limiting device 2. Once the packaging bag has moved to the designated area, the continuous pressure measuring device 4 checks the pressure value of the packaging bag again. The pressure value obtained this time is compared with the initial pressure value. If there is a difference between the two pressure values, it indicates that there is gas leakage in the packaging bag during continuous pressing, which means that the packaging bag is leaking. If the two pressure values ​​are basically the same, it can be considered that the packaging bag is well sealed.

[0036] The sorting and pushing device 5 operates based on the detection results of the continuous pressure measuring device 4. For packaging bags found to be leaking, the sorting and pushing device 5 pushes them to the non-conforming product area.

[0037] Through the above workflow, efficient and accurate detection of the sealing of Chinese herbal medicine packaging bags is achieved, effectively solving the problem of insufficient sensitivity and reliability in detecting minute leaks in existing technologies, and meeting the needs of high-requirement products such as Chinese herbal medicine for reliable monitoring of packaging sealing.

[0038] See Figures 1 to 4 As shown, the bottom of the limiting placement device 2 is fixedly connected to the linear conveyor 1. The limiting placement device 2 has a limiting placement groove 21 inside, and multiple positioning holes 23 on the limiting placement device 2. The side of the limiting placement device 2 has a material discharge port. The limiting placement device 2 also has two movable adjustment plates 22 inside, and a bidirectional adjustment screw 24 is installed on the limiting placement device 2. The bidirectional adjustment screw 24 is threadedly connected to the two movable adjustment plates 22.

[0039] The limiting placement device 2 has a limiting placement groove 21 inside, the main function of which is to store the packaging bags. After the packaging machine finishes packaging the Chinese herbal medicine pieces, the packaging bags containing the Chinese herbal medicine pieces are accurately conveyed into the limiting placement groove 21 via the limiting feeding rail 3, realizing the initial positioning and storage of the packaging bags.

[0040] The limiting placement device 2 is provided with multiple positioning holes 23, which have a precise positioning function. When the continuous pressure testing device 4 performs a seal test on the packaging bag, the working end of the continuous pressure testing device 4 can accurately align with the positioning holes 23 to ensure that the pressing position is accurate, thereby ensuring the reliability of the test results.

[0041] The limiting placement device 2 has a material discharge port on its side, which is used in conjunction with the sorting and pushing device 5 to detach the packaging bag. After the continuous pressure measuring device 4 completes the sealing test of the packaging bag, the sorting and pushing device 5 sorts the packaging bag according to the test results. For unqualified packaging bags, the sorting and pushing device 5 pushes the packaging bag out of the limiting placement groove 21 through the material discharge port, so that it enters the unqualified product area.

[0042] The limiting placement device 2 also has two movable adjusting plates 22 inside, and is equipped with a bidirectional adjusting screw 24, which is threadedly connected to the two movable adjusting plates 22. By rotating the bidirectional adjusting screw 24, the two movable adjusting plates 22 can be moved synchronously. Since the two movable adjusting plates 22 are located within the limiting placement groove 21, the movement of the movable adjusting plates 22 can adjust the storage space inside the limiting placement groove 21. This storage space adjustment function can accommodate packaging bags of different sizes and specifications, ensuring that the packaging bags can be stably placed within the limiting placement groove 21; by precisely adjusting the storage space, the packaging bags can be kept in a centered position within the limiting placement groove 21. When the centrally placed packaging bag is subsequently subjected to the pressing test of the continuous pressure testing device 4, the uniformity and accuracy of the pressing can be guaranteed, which is beneficial to improving the accuracy of the sealing test.

[0043] See Figure 1 As shown, the limiting placement device 2 also includes an automatic adjustment device for adjusting the movable adjustment plate 22. The automatic adjustment device includes a rotary drive device 26 and an adjustment limiting device 27. The rotary drive device 26 and the adjustment limiting device 27 are respectively arranged on both sides of the limiting placement device 2. The rotary drive device 26 is used to drive the bidirectional adjustment screw 24 to rotate, and the adjustment limiting device 27 is used to limit the position of the movable adjustment plate 22.

[0044] When the rotary drive device 26 is activated, the rotational power it generates is transmitted to the bidirectional adjusting screw 24, driving the bidirectional adjusting screw 24 to rotate around its own axis. Since the bidirectional adjusting screw 24 is threadedly connected to the two movable adjusting plates 22 within the limiting placement device 2, according to the principle of threaded transmission, the rotation of the bidirectional adjusting screw 24 will cause the two movable adjusting plates 22 to move synchronously along the axial direction of the bidirectional adjusting screw 24. This synchronous movement ensures that the two movable adjusting plates 22 can adjust their positions at the same speed and direction, thereby achieving uniform adjustment of the storage space inside the limiting placement slot 21.

[0045] An adjusting limit device 27 is installed on the other side of the limiting placement fixture 2, and its main function is to precisely limit the position of the movable adjusting plate 22. As the movable adjusting plate 22 moves with the rotation of the bidirectional adjusting screw 24, the adjusting limit device 27 positions the movable adjusting plate 22 using a preset limiting structure. When the movable adjusting plate 22 moves to the preset suitable position, the adjusting limit device 27 sends a signal to control the rotary drive device 26 to stop rotating, thereby fixing the movable adjusting plate 22 in that position and ensuring that the storage space of the limiting placement slot 21 reaches the required size to accommodate the placement needs of packaging bags of different sizes.

[0046] Through the close cooperation of the rotary drive device 26 and the adjusting limit device 27, the automatic adjustment device achieves automatic and precise adjustment of the positions of the two movable adjusting plates 22 in the limiting placement fixture 2. Compared with the traditional manual adjustment method, the automatic adjustment device not only improves the accuracy of adjustment and avoids errors that may be caused by human operation, but also significantly improves the adjustment efficiency, reduces manual intervention and operation time, and provides a strong guarantee for the efficient and stable processing of Chinese herbal medicine packaging bags.

[0047] See Figures 1 to 6 As shown, the rotary drive device 26 includes a first mounting bracket 261, a first linear driver 262, a first bidirectional lead screw slide 263, and a drive coupling 264. The first mounting bracket 261 is fixedly mounted on the linear conveyor 1. The first bidirectional lead screw slide 263 is slidably mounted on the first mounting bracket 261 and is horizontally arranged. There are two drive couplings 264, which are evenly distributed on the movable end of the first bidirectional lead screw slide 263 and are fixedly connected to the movable end of the first bidirectional lead screw slide 263. The first linear driver 262 is fixedly mounted on the first mounting bracket 261 and its output end is fixedly connected to the first bidirectional lead screw slide 263.

[0048] When it is necessary to adjust the distance between the two movable adjusting plates 22 within the limiting placement device 2, the first linear actuator 262 is activated. The first linear actuator 262 begins operation, generating linear motion at its output end, pushing the first bidirectional lead screw slide 263 towards the limiting placement device 2. As the first bidirectional lead screw slide 263 moves, the two drive couplings 264 mounted on the movable end also approach the bidirectional adjusting screw 24. When the drive couplings 264 move to both ends of the bidirectional adjusting screw 24, the first linear actuator 262 stops operating. At this point, the two drive couplings 264 have accurately reached their predetermined positions, preparing for subsequent docking operations.

[0049] After the drive connector 264 is positioned, the first bidirectional screw slide 263 starts, and its movable end drives the two drive connectors 264 to move horizontally synchronously. During the movement, the drive connectors 264 and the two ends of the bidirectional adjusting screw 24 are precisely aligned, ensuring that power can be effectively transmitted from the drive connectors 264 to the bidirectional adjusting screw 24. After alignment, the first bidirectional screw slide 263 continues to apply power, driving the bidirectional adjusting screw 24 to rotate around its own axis through the drive connectors 264. Since the bidirectional adjusting screw 24 is threadedly connected to the two movable adjusting plates 22 inside the limiting placement device 2, the rotation of the bidirectional adjusting screw 24 causes the two movable adjusting plates 22 to move synchronously along the axial direction of the bidirectional adjusting screw 24, thereby adjusting the distance between the two movable adjusting plates 22 to meet the placement requirements of packaging bags of different sizes.

[0050] See Figures 5 to 6 As shown, the drive coupling 264 includes a first rotary driver 2641, a drive shaft 2642, a movable mounting block 2643, a docking sleeve 2644, a first spring 2645, a driven gear 2646, and a driving gear 2647. The drive shaft 2642 is rotatably mounted on the first bidirectional lead screw slide 263. The movable mounting block 2643 is fixedly mounted on the movable end of the first bidirectional lead screw slide 263. The docking sleeve 2644 is slidably mounted on the movable mounting block 2643. The docking sleeve 2644 has a docking groove inside, which is connected to the end of the bidirectional adjusting screw 24. Matching; a first spring 2645 is disposed between the mating sleeve 2644 and the movable mounting block 2643; the driven gear 2646 is fixedly connected to the mating sleeve 2644; the driving gear 2647 is rotatably mounted on the movable mounting block 2643 and rotatably connected, the axial position of the driving gear 2647 is slidably connected to the drive shaft 2642, and the driving gear 2647 and the driven gear 2646 mesh with each other; a first rotary actuator 2641 is fixedly mounted on the first bidirectional lead screw slide 263, and the output end of the first rotary actuator 2641 is connected to the drive shaft 2642 for transmission.

[0051] When the first bidirectional lead screw slide 263 drives the two movable mounting blocks 2643 to move horizontally, the mating sleeve 2644 on the movable mounting block 2643 moves closer to the end of the bidirectional adjusting screw 24. During the mating process, if the mating groove of the mating sleeve 2644 fails to accurately align with the end of the bidirectional adjusting screw 24, the mating sleeve 2644 will be blocked by the end of the bidirectional adjusting screw 24, thus contracting and moving on the movable mounting block 2643. At this time, the first spring 2645 is compressed, producing elastic deformation and storing elastic potential energy.

[0052] Subsequently, the first rotary actuator 2641 is activated, and its output drives the drive shaft 2642 to rotate. The rotation of the drive shaft 2642 drives the drive gear 2647 to rotate. Since the drive gear 2647 meshes with the driven gear 2646, the rotation of the drive gear 2647 drives the driven gear 2646 to rotate. The driven gear 2646 is fixedly connected to the mating sleeve 2644, so the rotation of the driven gear 2646 causes the mating sleeve 2644 to rotate accordingly. During the rotation of the mating sleeve 2644, when the mating groove rotates to the appropriate position, the elastic potential energy stored in the first spring 2645 is released, pushing the mating sleeve 2644 to reset, allowing the mating groove to accurately engage with the end of the bidirectional adjusting screw 24.

[0053] After docking is completed, the first rotary actuator 2641 continues to transmit power through the drive shaft 2642, the driving gear 2647, and the driven gear 2646, causing the docking sleeve 2644 to drive the bidirectional adjusting screw 24 to rotate synchronously. Since the bidirectional adjusting screw 24 is threadedly connected to the two movable adjusting plates 22 inside the limiting placement device 2, according to the principle of threaded transmission, the rotation of the bidirectional adjusting screw 24 will cause the two movable adjusting plates 22 to move synchronously along the axial direction of the bidirectional adjusting screw 24, thereby realizing the adjustment of the distance between the two movable adjusting plates 22 to meet the placement requirements of packaging bags of different sizes.

[0054] See Figure 1 and Figure 7 As shown, the adjusting limit device 27 includes a second mounting bracket 271, a second rotary driver 272, a rotating mounting frame 273, and a limit adjusting mechanism; the second mounting bracket 271 is fixedly connected to the linear conveyor 1; the rotating mounting frame 273 is rotatably mounted on the second mounting bracket 271; the second rotary driver 272 is fixedly mounted on the second mounting bracket 271, and the output end of the second rotary driver 272 is connected to the rotating mounting frame 273 in a transmission connection; the limit adjusting mechanism is mounted on the rotating mounting frame 273.

[0055] When it is necessary to ensure the accuracy of the adjustment of the two movable adjustment plates 22, and after the rotary drive device 26 has driven the two movable adjustment plates 22 back to their initial positions, the control system issues a command to start the second rotary drive 272. The second rotary drive 272 starts working, and its output end generates rotational power, which is transmitted to the rotating mounting frame 273 through the transmission mechanism, driving the rotating mounting frame 273 to rotate around the mounting axis. As the rotating mounting frame 273 rotates, the limit adjustment mechanism also moves accordingly until the limit adjustment mechanism accurately moves to the preset position in the limit placement slot 21. This preset position is pre-set according to the placement requirements of packaging bags of different sizes, ensuring that the limit adjustment mechanism can effectively limit the movable adjustment plates 22.

[0056] After the limit adjustment mechanism reaches the preset position, the automatic adjustment device restarts, driving the two movable adjustment plates 22 to move towards the limit adjustment mechanism. Since the bidirectional adjustment screw 24 is threadedly connected to the movable adjustment plates 22, the rotary drive device 26 drives the bidirectional adjustment screw 24 to rotate, causing the two movable adjustment plates 22 to move synchronously along the axial direction of the bidirectional adjustment screw 24. During the movement, the movable adjustment plates 22 gradually approach the limit adjustment mechanism until they are in contact with it. At this point, the movable adjustment plates 22 stop moving, indicating that they have reached the appropriate position, and the storage space of the limit placement slot 21 has reached the required size, accommodating the placement needs of packaging bags of different specifications.

[0057] See Figure 7 As shown, the limit adjustment mechanism includes a limit contact frame 2741, a second linear actuator 2742, a connecting block 2743, and a connecting rod 2744. Two limit contact frames 2741 are provided, and each limit contact frame 2741 is slidably connected to a rotating mounting frame 273. A ball bearing slide 2745 is provided on the side of each limit contact frame 2741, and a first pressure sensor is installed between the ball bearing slide 2745 and the limit contact frame 2741. The second linear actuator 2742 is fixedly mounted on the rotating mounting frame 273. The connecting block 2743 is fixedly mounted on the output end of the second linear actuator 2742. Two connecting rods 2744 are provided, distributed on the limit contact frame 2741. One end of each connecting rod 2744 is rotatably connected to the limit contact frame 2741, and the end of each connecting rod 2744 away from the limit contact frame 2741 is rotatably connected to the connecting block 2743.

[0058] When the position of the limiting contact frame 2741 needs to be adjusted to accommodate the placement requirements of packaging bags of different sizes, the control system issues a command to activate the second linear actuator 2742. The second linear actuator 2742 then operates, driving the connecting block 2743 to move in a straight line. Since the two ends of the connecting rod 2744 are rotatably connected to the connecting block 2743 and the limiting contact frame 2741 respectively, the movement of the connecting block 2743 will cause the connecting rod 2744 to move synchronously. According to the motion principle of the linkage mechanism, the movement of the connecting rod 2744 will cause the two limiting contact frames 2741 to move synchronously in either a contraction or expansion phase. When the storage space of the limiting placement slot 21 needs to be increased, the two limiting contact frames 2741 expand synchronously; when the storage space needs to be reduced, the connecting block 2743 is driven to move in the opposite direction, causing the two limiting contact frames 2741 to contract synchronously.

[0059] During the movement of the limiting contact bracket 2741, its side ball bearing slide 2745 directly contacts the movable adjusting plate 22. The ball bearing slide 2745 reduces the friction between the limiting contact bracket 2741 and the movable adjusting plate 22, allowing the limiting contact bracket 2741 to move and return more smoothly. When the limiting contact bracket 2741 moves to contact the movable adjusting plate 22, the first pressure sensor starts working, detecting the contact pressure between the limiting contact bracket 2741 and the movable adjusting plate 22 in real time. When the contact pressure reaches a preset value, it indicates that the limiting contact bracket 2741 has accurately contacted the movable adjusting plate 22.

[0060] See Figure 1 and Figure 8 As shown, the limiting material drop rail 3 is fixedly installed on the linear conveyor 1. The bottom of the limiting material drop rail 3 is an inclined surface 31. The bottom of the inclined slide rail is also provided with a material drop port. An infrared sensor is provided below the material drop port. The limiting material drop rail 3 is provided with a third bidirectional screw slide 35. Two guide plates 33 are installed on the movable end of the third bidirectional screw slide 35. One end of the guide plate 33 is fixedly connected to the movable end of the third bidirectional screw slide 35. An elastic guide belt 34 is provided between the guide plate 33 and the inclined slide rail.

[0061] A vibration motor 32 is also installed on the limiting material drop rail 3.

[0062] After the packaging machine finishes packaging the Chinese herbal medicine slices, the packaging bag falls into the limiting feeding rail 3 and slides along the bottom inclined surface 31 to the feeding port under the action of gravity, so as to achieve precise delivery to the upper limit placement device 2 of the downward linear conveyor 1.

[0063] The limiting and unloading rail 3 integrates a third bidirectional screw slide 35, with two guide plates 33 mounted on its movable end. One end of each guide plate 33 is fixedly connected to the movable end of the screw slide, and an elastic guide belt 34 is provided between the guide plate 33 and the inclined slide rail. During the sliding of the packaging bag, the two guide plates 33 form a dynamic guiding channel through the elastic guide belt 34, ensuring that the packaging bag accurately falls into the center position of the limiting and placing device 2. By controlling the stroke of the third bidirectional screw slide 35, the distance between the two guide plates 33 can be adjusted to achieve adaptive guidance and adjustment for packaging bags of different widths.

[0064] The limiting discharge rail 3 is also equipped with a vibration motor 32. When the internal packaging bag becomes blocked, the vibration motor 32 starts to generate vibration force, which helps the packaging bag overcome static friction resistance and continue to slide, ensuring the continuity of the discharge process. An infrared sensor installed below the discharge port can detect whether the packaging bag passes through in real time, providing signal feedback for the start and stop control of the subsequent linear conveyor 1 and the positioning of the limiting placement device 2.

[0065] See Figure 1 , Figure 9 and Figure 10 As shown, the continuous pressure measuring device 4 includes a circulating conveyor 41, a docking mounting frame 42, a second spring 43, a pressing strip 44, and a third spring 45. The circulating conveyor 41 is fixedly installed above the linear conveyor 1, and guide rails 411 are installed at both ends of the circulating conveyor 41. Several docking mounting frames 42 are provided and evenly distributed on the circulating conveyor 41. The docking mounting frames 42 are slidably connected to the circulating conveyor 41. A second pressure sensor 422 is provided on the docking mounting frame 42. Several docking protrusions are also provided on the docking mounting frame 42. Sliding rollers 423 are installed on the side of the docking mounting frame 42. Several second springs 43 are provided and evenly distributed between the docking mounting frame 42 and the circulating conveyor 41. Several pressing strips 44 are provided and evenly distributed on the docking mounting frame 42. The pressing strips 44 are slidably installed on the docking mounting frame 42. Several third springs 45 are provided and evenly distributed between the pressing strips 44 and the second pressure sensor 422.

[0066] During operation, the circulating conveyor 41 rotates synchronously with the linear conveyor 1, driving multiple docking mounting frames 42 to perform periodic cyclical motion. When the docking mounting frame 42 moves to the area of ​​the guide rail 411, the sliding roller 423 contacts the guide rail 411 and is guided, forcing the docking mounting frame 42 to retract, simultaneously compressing the second spring 43 to store energy. After retracting, the docking mounting frame 42 moves smoothly to directly above the limiting placement device 2, the sliding roller 423 disengages from the guide rail 411, the second spring 43 releases its elastic potential energy, pushing the docking mounting frame 42 downward, so that the docking protrusion and the positioning hole 23 on the limiting placement device 2 complete precise docking and positioning.

[0067] At this time, the pressing strip 44 continuously presses the packaging bag in the limiting placement groove 21 under the elastic force of the third spring 45. The third spring 45 deforms under pressure and transmits the pressure to the second pressure sensor 422. The second pressure sensor 422 collects the pressure value of the third spring 45 in real time and judges the sealing performance of the packaging bag by analyzing the pressure change curve: if there is a slight leak, the gas escapes and the pressure gradually decreases, forming a pressure difference; if the seal is good, the pressure value remains stable.

[0068] Through the synchronous movement of the circulating conveyor 41 and the linear conveyor 1, the guiding control of the guide rail 411, the elastic transmission of the spring group, and the dynamic detection of the pressure sensor, the continuous pressure measuring device 4 realizes long-term, continuous, and high-precision sealing detection of the packaging bags of Chinese herbal medicine slices during the transportation process, effectively improving the detection sensitivity and reliability of micro-leakage and ensuring reliable monitoring of packaging sealing.

[0069] See Figure 2 and Figure 3 As shown, the sorting and pushing device 5 includes a third mounting frame 51, a third linear driver 53, and a pusher plate 52; the third mounting frame 51 is fixedly mounted on the linear conveyor 1; the third linear driver 53 is fixedly mounted on the third mounting frame 51, and the output end of the third linear driver 53 extends toward the limiting placement device 2; the pusher plate 52 is fixedly mounted on the output end of the third linear driver 53.

[0070] During the inspection process, when the continuous pressure testing device 4 completes the sealing test of the packaging bag and determines that there is a leak, the sorting and pushing device 5 starts to perform its action. After receiving the control signal, the third linear actuator 53 drives the push plate 52 to extend horizontally, and the front end of the push plate 52 is precisely aligned with the material discharge port on the side of the limiting placement device 2. The push plate 52 applies a pushing force to the packaging bag in the limiting placement groove 21 through linear motion, so that the packaging bag overcomes the constraint force of the limiting placement groove 21, detaches from the limiting placement device 2 from the material discharge port, and falls into the preset non-conforming product collection area.

[0071] For packaging bags that pass the sealing test, the sorting and pushing device 5 remains in standby mode, the pusher 52 does not move, and the packaging bags continue to be transported to the qualified product collection area by the linear conveyor 1. This achieves automated sorting and processing of leaking packaging bags, ensures the effective separation of unqualified products, and guarantees the integrity and reliability of the sealing test process for Chinese herbal medicine packaging.

[0072] Specific working principle: After the packaging machine completes the packaging of Chinese herbal medicine slices, the packaging bags containing the Chinese herbal medicine slices fall into the limiting feed rail 3. The limiting feed rail 3 accurately conveys the packaging bags to the limiting placement device 2 below, achieving the initial positioning of the packaging bags.

[0073] The linear conveyor 1 starts, driving the limiting placement device 2 to move. The limiting placement device 2 moves to below the continuous pressure measuring device 4, at which point the working end of the continuous pressure measuring device 4 applies limiting pressure to the packaging bag on the limiting placement device 2.

[0074] When the packaging bag is initially pressed, the working end of the continuous pressure measuring device 4 will detect the pressure value that the packaging bag is subjected to at this time, and record the pressure value as the initial pressure value.

[0075] As the linear conveyor 1 continues to move, driving the limiting device 2, the continuous pressure measuring device 4 moves synchronously and continuously presses the packaging bag. This synchronous movement and pressing method ensures that the packaging bag is continuously pressed during the conveying process, effectively extending the pressing time. The longer pressing time helps allow sufficient time for gas to leak out when there are small holes in the packaging bag, thus creating a more obvious pressure change, which is convenient for subsequent detection and identification.

[0076] The linear conveyor 1 continuously moves the limiting device 2. Once the packaging bag has moved to the designated area, the continuous pressure measuring device 4 checks the pressure value of the packaging bag again. The pressure value obtained this time is compared with the initial pressure value. If there is a difference between the two pressure values, it indicates that there is gas leakage in the packaging bag during continuous pressing, which means that the packaging bag is leaking. If the two pressure values ​​are basically the same, it can be considered that the packaging bag is well sealed.

[0077] The sorting and pushing device 5 operates based on the detection results of the continuous pressure measuring device 4. For packaging bags found to be leaking, the sorting and pushing device 5 pushes them to the non-conforming product area.

[0078] Through the above workflow, efficient and accurate detection of the sealing of Chinese herbal medicine packaging bags is achieved, effectively solving the problem of insufficient sensitivity and reliability in detecting minute leaks in existing technologies, and meeting the needs of high-requirement products such as Chinese herbal medicine for reliable monitoring of packaging sealing.

[0079] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces, comprising a sorting and conveying device installed below the packaging machine, characterized in that, The sorting and conveying device includes a linear conveyor (1), a limiting placement device (2), a limiting dropping rail (3), a continuous pressure measuring device (4), and a sorting and pushing device (5); Several limiting placement devices (2) are provided and evenly distributed on the linear conveyor (1). The limiting placement devices (2) are used to limit the placement of packaging bags. The limiting material drop rail (3) is fixedly installed on the linear conveyor (1), and the discharge end of the limiting material drop rail (3) is set above the limiting placement device (2); The continuous pressure testing device (4) is set on the side of the limiting material drop rail (3). The continuous pressure testing device (4) is fixedly connected to the linear conveyor (1). The continuous pressure testing device (4) is equipped with several detection ends. The continuous pressure testing device (4) is used to detect the sealing performance of the packaging bag. The sorting and pushing device (5) is set on the side of the continuous pressure measuring device (4), and the sorting and pushing device (5) is fixedly connected to the linear conveyor (1).

2. The finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 1, characterized in that, The bottom of the limiting placement device (2) is fixedly connected to the linear conveyor (1). The limiting placement device (2) is provided with a limiting placement groove (21) inside. The limiting placement device (2) is also provided with multiple positioning holes (23). The side of the limiting placement device (2) is provided with a material discharge port. The limiting placement device (2) is also provided with two movable adjustment plates (22) inside. The limiting placement device (2) is also equipped with a bidirectional adjustment screw (24), which is threadedly connected to the two movable adjustment plates (22).

3. The finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 2, characterized in that, The limiting placement device (2) also includes an automatic adjustment device for adjusting the movable adjustment plate (22). The automatic adjustment device includes a rotary drive device (26) and an adjustment limiting device (27). The rotary drive device (26) and the adjustment limiting device (27) are respectively arranged on both sides of the limiting placement device (2). The rotary drive device (26) is used to drive the bidirectional adjustment screw (24) to rotate, and the adjustment limiting device (27) is used to limit the position of the movable adjustment plate (22).

4. The finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 3, characterized in that, The rotary drive device (26) includes a first mounting bracket (261), a first linear actuator (262), a first bidirectional lead screw slide (263), and a drive connector (264). The first mounting bracket (261) is fixedly mounted on the linear conveyor (1); The first bidirectional screw slide (263) is slidably mounted on the first mounting bracket (261), and the first bidirectional screw slide (263) is set horizontally; Two drive connectors (264) are provided and are evenly distributed on the movable end of the first bidirectional lead screw slide (263). The drive connectors (264) are fixedly connected to the movable end of the first bidirectional lead screw slide (263). The first linear actuator (262) is fixedly mounted on the first mounting bracket (261), and the output end of the first linear actuator (262) is fixedly connected to the first bidirectional lead screw slide (263).

5. A finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 4, characterized in that, The drive coupling (264) includes a first rotary driver (2641), a drive shaft (2642), a movable mounting block (2643), a docking sleeve (2644), a first spring (2645), a driven gear (2646), and a driving gear (2647). The drive shaft (2642) is rotatably mounted on the first bidirectional lead screw slide (263); The movable mounting block (2643) is fixedly installed on the movable end of the first bidirectional lead screw slide (263); The docking sleeve (2644) is slidably mounted on the movable mounting block (2643). The docking sleeve (2644) has a docking groove inside, which matches the end of the bidirectional adjusting screw (24). The first spring (2645) is disposed between the mating sleeve (2644) and the movable mounting block (2643); The driven gear (2646) is fixedly connected to the mating sleeve (2644); The drive gear (2647) is rotatably mounted on the movable mounting block (2643) and rotatably connected. The axial position of the drive gear (2647) is slidably connected to the drive shaft (2642). The drive gear (2647) and the driven gear (2646) mesh with each other. The first rotary driver (2641) is fixedly mounted on the first bidirectional lead screw slide (263), and the output end of the first rotary driver (2641) is connected to the drive shaft (2642) for transmission.

6. A finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 3, characterized in that, The adjusting limit device (27) includes a second mounting bracket (271), a second rotary driver (272), a rotating mounting bracket (273), and a limit adjusting mechanism; The second mounting bracket (271) is fixedly connected to the linear conveyor (1); The rotating mounting bracket (273) is rotatably mounted on the second mounting bracket (271); The second rotary actuator (272) is fixedly mounted on the second mounting bracket (271), and the output end of the second rotary actuator (272) is connected to the rotating mounting bracket (273) for transmission. The limit adjustment mechanism is installed on the rotating mounting bracket (273).

7. A finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 6, characterized in that, The limit adjustment mechanism includes a limit contact frame (2741), a second linear actuator (2742), a connecting block (2743), and a connecting rod (2744). Two limit contact frames (2741) are provided. The limit contact frames (2741) are slidably connected to the rotating mounting frame (273). A ball bearing slide (2745) is provided on the side of the limit contact frame (2741). A first pressure sensor is installed between the ball bearing slide (2745) and the limit contact frame (2741). The second linear actuator (2742) is fixedly mounted on the rotating mounting bracket (273); The connecting block (2743) is fixedly installed at the output end of the second linear driver (2742); There are two connecting rods (2744), which are distributed on the limiting contact frame (2741). One end of the connecting rod (2744) is rotatably connected to the limiting contact frame (2741), and the other end of the connecting rod (2744) away from the limiting contact frame (2741) is rotatably connected to the connecting block (2743).

8. A finished product quantitative packaging and conveying equipment for processing traditional Chinese medicine decoction pieces according to claim 1, characterized in that, The limiting material drop rail (3) is fixedly installed on the linear conveyor (1). The bottom of the limiting material drop rail (3) is an inclined surface (31). The bottom of the inclined slide rail is also provided with a material drop port. An infrared sensor is provided below the material drop port. The limiting material drop rail (3) is provided with a third bidirectional screw slide (35). The movable end of the third bidirectional screw slide (35) is equipped with two guide plates (33). One end of the guide plate (33) is fixedly connected to the movable end of the third bidirectional screw slide (35). An elastic guide belt (34) is provided between the guide plate (33) and the inclined slide rail.

9. A finished product quantitative packaging and conveying device for processing traditional Chinese medicine decoction pieces according to claim 1, characterized in that, The continuous pressure measuring device (4) includes a circulating conveyor (41), a docking mounting frame (42), a second spring (43), a pressing bar (44), and a third spring (45). The circulating conveyor (41) is fixedly installed above the linear conveyor (1), and guide rails (411) are installed at both ends of the circulating conveyor (41). A number of docking mounting frames (42) are provided and are evenly distributed on the circulating conveyor (41). The docking mounting frames (42) are slidably connected to the circulating conveyor (41). A second pressure sensor (422) is provided on the docking mounting frame (42). A number of docking protrusions are also provided on the docking mounting frame (42). A sliding roller (423) is installed on the side of the docking mounting frame (42). Multiple second springs (43) are provided and are evenly distributed between the docking mounting frame (42) and the circulating conveyor (41); Several pressing strips (44) are provided and are evenly distributed on the docking mounting frame (42). The pressing strips (44) are slidably installed on the docking mounting frame (42). Several third springs (45) are provided and are evenly distributed between the pressing strip (44) and the second pressure sensor (422).

10. A finished product quantitative packaging and conveying device for processing traditional Chinese medicine decoction pieces according to claim 1, characterized in that, The sorting and pushing device (5) includes a third mounting bracket (51), a third linear actuator (53), and a push plate (52); The third mounting bracket (51) is fixedly mounted on the linear conveyor (1); The third linear actuator (53) is fixedly mounted on the third mounting bracket (51), and the output end of the third linear actuator (53) extends toward the limiting placement device (2); The push plate (52) is fixedly installed at the output end of the third linear driver (53).

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