Vacuum packaging machine for traditional Chinese medicine decoction pieces

Abstract

The invention belongs to the technical field of medicinal material packaging, and discloses a traditional Chinese medicine decoction piece vacuum packaging machine which comprises a pushing part located on the side, away from a packaging film, of a vertical heat sealing assembly. In the downward moving process of the packaging film roll, the vertical heat sealing assembly is used for conducting side sealing; after the bottom end of the medicine is sealed through the horizontal heat sealing assembly, the medicine moves downwards, the medicine is input into the formed packaging film roll, and the pushing part acts and stretches into the formed packaging film roll to completely push the medicine into the formed packaging film roll; the material pushing part is arranged to stretch into the formed packaging film roll, medicinal materials are actively pushed into the formed packaging bag, and the problem that light and fluffy traditional Chinese medicinal materials such as dandelions and selfheal are difficult to naturally settle due to the gravity effect is effectively solved; and it is ensured that the medicinal materials can completely enter the packaging bag, sealing failure or yield reduction caused by insufficient filling is avoided, and the stability and reliability of the packaging process are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medicinal material packaging, and particularly relates to a vacuum packaging machine for Chinese medicinal slices. Background Art

[0002] With the continuous development of the traditional Chinese medicine industry, in order to meet the consistent amount of medicinal materials used each time, medicinal material manufacturers have introduced quantitative bagged Chinese herbal medicine slices. In order to further improve production efficiency and the consistency of packaging quality, automated packaging equipment specifically for Chinese herbal medicine slices has also appeared on the market - Chinese herbal medicine slice packaging machines. After searching, the application number is CN202221924707.8, a vacuum packaging device for Chinese herbal medicine slice processing, which can achieve quantitative packaging, effectively improve the work efficiency of users, and bring better use prospects; however, the packaging device has the following problems in actual application: First, for relatively fluffy medicinal herbs like dandelion and Prunella vulgaris, fragments of the herb can easily get stuck in the seal when packaging. This not only compromises the sealing properties of the package but can also cause contamination or moisture during transportation and storage, negatively impacting the herb's quality and shelf life.

[0003] Secondly, current packaging for Chinese herbal medicines (TCMs) is mostly done in coils and sealed by heat. Typically, the bottom of the bag is sealed before the herbs are added. While this practice helps speed up the packaging process, it also presents some challenges in practice. Given the lightweight and bulky nature of many TCMs, gravity has a difficult time allowing them to settle smoothly to the bottom of the bag. If the bottom is sealed, this can cause blockage or accumulation during the filling process, preventing the herbs from fully entering the bag.

[0004] Finally, to ensure the quality and storage safety of traditional Chinese medicines, vacuum packaging has become an essential standard feature of the processing of Chinese herbal medicine slices. However, when vacuum packaging certain light, fluffy herbs, due to their inherent light weight, low density, and loose structure, they are easily swept up by the high-speed airflow during vacuum pumping and carried into the vacuum pipe. This can cause internal contamination or even blockage of the equipment, impacting production efficiency and normal operation. Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a vacuum packaging machine for Chinese herbal medicine slices to solve the problems existing in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution of the present invention is a vacuum packaging machine for Chinese herbal medicine slices, the packaging machine comprising a unwinding component and a packaging component, the unwinding component is used for supplying a packaging film roll, the packaging component comprises a vertical heat-sealing component and a horizontal heat-sealing component for forming the packaging film roll, the packaging machine also comprises a pushing component, the pushing component is located on the side of the vertical heat-sealing component away from the packaging film; during the downward movement of the packaging film roll, the vertical heat-sealing component performs side sealing; after the bottom end is sealed by the horizontal heat-sealing component, it moves downward to input the medicinal materials into the formed packaging film roll, the pushing component moves, extends into the formed packaging film roll, and completely pushes the medicinal materials into the formed packaging film roll, and the horizontal heat-sealing component performs top sealing on the packaging film roll; at the same time, pressing down the medicinal materials in the formed packaging film roll by the pushing component can reduce the movement of the medicinal materials during vacuum and avoid the situation where the medicinal materials are carried away by the vacuum airflow.

[0007] Preferably, the pushing component includes a driving assembly, and a pushing plate is provided on the output end of the driving assembly; the driving assembly controls the movement of the pushing plate to push the medicinal materials completely into the formed packaging film roll; the pushing plate can switch between a retracted state and a pushing state; when the pushing plate is located behind the vertical heat sealing assembly, the pushing plate is in a retracted state; under the control of the driving assembly, the pushing plate extends into the formed packaging film roll, and the pushing plate switches from the retracted state to the pushing state, so as to push the medicinal materials completely into the formed packaging film roll; after completing the medicinal material pushing action, the pushing plate switches from the pushing state to the retracted state, and is retracted behind the vertical heat sealing assembly under the control of the driving assembly.

[0008] Furthermore, the push plate is arranged with an airbag structure; when the airbag is inflated, the push plate switches to a pushing state; when the gas in the airbag is emptied, the push plate switches to a retracted state; the airbag structure is used to press down the medicinal materials, so that the pushing component can be adjusted according to the specific shape of the medicinal materials; at the same time, physical damage to the medicinal materials is avoided.

[0009] Furthermore, the airbag includes a support rod, a storage tube is slidably provided on the support rod, a capsule is provided between the support rod and the storage tube, and the capsule is located at the front end of the support rod; when the storage tube moves to the rear end of the support rod, the capsule is released and inflated, so that the airbag enters a pushing state; when the storage tube moves from the rear end of the support rod to the front end of the support rod, it can push the gas in the capsule to be discharged, and the airbag is in a retracted state.

[0010] Furthermore, when the pushing component performs the pushing operation, the length direction of the support rod is the same as the direction of the packaging film roll; the capsule is arranged in a conical shape, the axial direction of the capsule is parallel to the length direction of the support rod, and the large end face of the capsule faces the medicinal materials in the packaging film roll after molding, so as to perform the pushing operation.

[0011] Furthermore, the unwinding component is arranged on a workbench, and the unwinding component includes a material guide member with a cylindrical structure, the outer side of the material guide member is used to guide the packaging film roll to be formed, and the inner side of the material guide member is used to guide the medicinal materials so that the medicinal materials can be smoothly moved into the formed packaging film roll; the material guide member is located above the horizontal heat sealing component, and the material guide member is slidably arranged on the workbench; when medicinal materials are added to the formed packaging film roll, the material guide member descends and closes the distance with the horizontal heat sealing component to ensure that the medicinal materials can reach the formed packaging film roll; when the pushing component performs a pushing operation, the material guide member rises and opens a distance with the horizontal heat sealing component to avoid the existence of the material guide member affecting the movement of the pushing component.

[0012] Furthermore, a fixed rail is provided between the material guide member and the workbench, and the fixed rail is used to control the sliding trajectory of the material guide member; the driving assembly includes a horizontal assembly for controlling the horizontal movement of the push plate and a vertical assembly for controlling the vertical movement of the push plate, and a connecting rod is provided between the movable end of the horizontal assembly and the material guide member, and the two ends of the connecting rod are respectively rotatably provided on the material guide member and the movable end of the horizontal assembly, and the connection position of the connecting rod and the material guide member is located above the horizontal assembly; when the horizontal assembly controls the push plate to extend into the formed packaging film roll, the material guide member moves up under the action of the connecting rod and the fixed rail, so that the material guide member automatically avoids when the pushing component is in action.

[0013] Preferably, the horizontal heat sealing assembly includes a heat sealing seat, wherein a first hot pressing knife and a second hot pressing knife are respectively slidably provided on the heat sealing seat, and a first linear moving part and a second linear moving part are respectively provided between the first hot pressing knife and the heat sealing seat and between the second hot pressing knife and the heat sealing seat, the first linear moving part and the second linear moving part drive the first hot pressing knife and the second hot pressing knife to complete the bottom sealing and top sealing of the packaging film roll; a tightening wheel is provided between the horizontal heat sealing assembly and the vertical heat sealing assembly, and the tightening wheel drives the packaging film to move; the vertical heat sealing assembly includes a mounting seat, the mounting seat is provided with a third linear moving part and a fourth linear moving part, and the third linear moving part and the fourth linear moving part are both provided with hot pressing wheels; the third linear moving part and the fourth linear moving part drive the hot pressing wheels to approach, and under the drive of the tightening wheel, the side sealing of the packaging film is completed.

[0014] Furthermore, a baffle is provided on the mounting seat; when the hot pressing wheel completes the side sealing and moves away, the baffle limits the position of the packaging film to prevent the packaging film from contacting the hot pressing wheel for a long time and causing local overheating.

[0015] The technical effects of the present invention are mainly reflected in the following aspects: By setting a pushing component that extends into the formed packaging film roll, the medicinal materials are actively pushed into the formed packaging bag, effectively overcoming the problem that light and fluffy Chinese medicinal materials such as dandelion and selfheal are difficult to settle naturally due to gravity; ensuring that the medicinal materials can completely enter the packaging bag, avoiding sealing failure or reduced yield due to insufficient filling, and improving the stability and reliability of the packaging process.

[0016] The push plate utilizes an airbag structure, which pushes the material through inflation and deflates to reset it. This design offers excellent adaptability and cushioning capabilities, automatically adjusting pressure distribution based on the volume of the medicinal material, preventing mechanical damage during the pushing process. It is particularly suitable for fragile and easily crushed Chinese medicinal pieces. Furthermore, the airbag's flexible contact enhances the density of the medicinal material before sealing, providing an excellent foundation for subsequent vacuum processing.

[0017] The traditional vertical heat sealing component structure is improved, and the side sealing is completed during the movement of the packaging film through the hot pressure wheel (i.e. "sealing on the move"), so that when the vertical heat sealing component and the pushing component are arranged at different horizontal heights, the moving stroke required by the vertical component is significantly reduced; it also enables the pushing component to continue to remain between the packaging film to be sealed on the side after the heat sealing is completed without affecting the sealing process, avoiding spatial conflict between the pushing component and the heat sealing component, so that the two can operate synchronously and coordinatedly; the pushing component does not need to repeatedly move in and out, reducing action delays and error accumulation, and improving the efficiency and stability of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present invention; Figure 2 for Figure 1 Structural diagram of the unwinding component; Figure 3 for Figure 1 Structural diagram of the packaged components; Figure 4 for Figure 3 Structural diagram of the mid-level heat seal assembly; Figure 5 for Figure 3 Structural diagram of the vertical heat sealing assembly; Figure 6 for Figure 1 Schematic diagram of the coordination between the unwinding component and the pushing component; Figure 7 for Figure 6 Schematic diagram of the structure of the middle pusher component; Figure 8 for Figure 7 Schematic diagram of the structure of the middle push plate adopting the airbag structure; Figure 9 Schematic diagram of the cooperation effect of the vertical heat sealing component and the pushing component in the present invention; In the figure: 1. workbench; 2. unwinding component; 21. material guide; 22. fixed rail; 23. connecting rod; 3. packaging component; 31. vertical heat sealing component; 311. mounting seat; 312. third linear moving component; 313. fourth linear moving component; 314. hot pressing wheel; 315. baffle; 32. horizontal heat sealing component; 321. heat sealing seat; 322. first hot pressing knife; 323. second hot pressing knife; 33. tightening wheel; 4. material pushing component; 41. driving component; 411. horizontal component; 412. vertical component; 42. push plate; 43. support rod; 44. storage tube; 45. capsule. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation methods of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and grasp. In the embodiments, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, in this specific embodiment, if the connection or fixing method between the components is not particularly specified, the connection or fixing method can be fixed by bolts or pins commonly used in the prior art, or by pin connections, etc. Therefore, it will not be described in detail in this embodiment.

[0020] See also Figure 1 The vacuum packaging machine for Chinese herbal medicine slices provided by this invention addresses key issues faced by traditional Chinese herbal medicine slice packaging equipment when handling fluffy medicinal materials, such as poor sealing, difficulty filling, and the possibility of medicinal materials being sucked into the pipe during the vacuum process. It is suitable for quantitative packaging of lightweight, fluffy Chinese medicinal materials (such as dandelion, prunella vulgaris, and chrysanthemum); however, this is not limited to this application and can also be used in other similar or similar production processes. Furthermore, the quantitative weighing and medicinal material conveying components of the vacuum packaging machine for Chinese herbal medicine slices are common knowledge and will not be described here.

[0021] Example 1 See also Figure 1This embodiment discloses a vacuum packaging machine for Chinese herbal medicine slices, which includes a unwinding component 2 and a sealing component 3. The unwinding component 2 is used to supply a packaging film roll. The sealing component 3 includes a vertical heat sealing component 31 and a horizontal heat sealing component 32 for forming the packaging film roll, which respectively complete the side sealing, bottom sealing and top sealing operations of the packaging film; the packaging machine also includes a pushing component 4, which is located on the side of the vertical heat sealing component 31 away from the packaging film; when the packaging film roll moves downward, the vertical heat sealing component 31 performs side sealing; after the horizontal heat sealing component 32 performs bottom sealing, a bag-like structure with an upward opening is formed, ready for filling with medicinal materials. After completing the bottom seal, the machine moves downward, feeding the medicinal materials into the formed packaging bag. At this point, due to the lightness and fluffy structure of some Chinese medicinal materials (such as dandelion and Prunella vulgaris), gravity hinders their ability to settle smoothly to the bottom of the bag. At this point, the pusher component 4 activates, extending into the formed packaging film roll and completely pushing the medicinal materials into the finished bag. This solves common problems with conventional equipment, such as insufficient filling, accumulation and blockage, and poor sealing, significantly improving packaging success rate and product quality. After the medicinal materials are filled and compacted by the pusher component 4, the horizontal heat-sealing assembly 32 seals the top of the packaging film roll while simultaneously performing vacuum extraction. Because the pusher component 4 has already compacted the medicinal materials, disturbances caused by the vacuum airflow are significantly reduced, effectively preventing the risk of the medicinal materials being drawn into the vacuum line. The downward pressure of the medicinal materials within the formed packaging film roll by the pusher component 4 reduces movement of the medicinal materials during vacuuming, preventing them from being carried away by the vacuum airflow. Traditional equipment relies on gravity to fill medicinal materials, which can significantly lead to incomplete filling when dealing with lightweight, fluffy materials. The present invention incorporates a pusher component 4 to actively propel the medicinal materials into the bag, ensuring complete filling. This pusher component 4 is retractable and located behind the vertical heat-sealing assembly 31 (i.e., on the side of the vertical heat-sealing assembly 31 facing away from the packaging film), ensuring a flexible participation in the filling process without interfering with the heat-sealing operation. While pushing the medicinal materials into the bag, it also applies a certain amount of pressure to achieve initial compaction. This not only helps to increase packaging density but, more importantly, significantly reduces the possibility of medicinal materials flying into the vacuum line due to airflow disturbances during the subsequent vacuum extraction phase. This effectively prevents equipment clogging and contamination, ensuring stable operation.

[0022] See also Figure 7 、 Figure 8The pushing component 4 includes a driving assembly 41, and a pushing plate 42 is provided at the output end of the driving assembly 41. The pushing plate 42 can switch between a retracted state and a pushing state. The driving assembly 41 controls the movement of the pushing plate 42 to completely push the medicinal materials into the formed packaging film roll. When the pushing plate 42 is located behind the vertical heat sealing assembly 31, the pushing plate 42 is in a retracted state. Under the control of the driving assembly 41, the pushing plate 42 extends into the formed packaging film roll, so that the pushing plate 42 switches from the retracted state to the pushing state. In the pushing state, the pushing plate 42 passes between the two layers of packaging film to be laterally sealed and extends into the formed packaging film roll, so as to completely push the medicinal materials into the formed packaging film roll. After the medicinal material pushing action is completed, the pushing plate 42 switches from the pushing state to the retracted state and is retracted to the rear of the vertical heat sealing assembly 31 under the control of the driving assembly 41.

[0023] The push plate 42 is configured with an airbag structure; it can automatically adjust the pressure distribution according to the specific shape of the medicinal material, ensuring that the medicinal material will not be physically damaged during the pushing process. The state conversion of the airbag depends on the inflation and deflation process: when the airbag is inflated, the push plate 42 switches to the pushing state; when the airbag is emptied of the gas, the push plate 42 switches to the stowed state; the airbag includes a support rod 43, on which a storage tube 44 is slidingly provided, and a capsule 45 is provided between the support rod 43 and the storage tube 44, and the capsule 45 is located at the front end of the support rod 43; when the storage tube 44 moves to the rear end of the support rod 43, the capsule 45 is released, and the capsule 45 is inflated, so that the airbag enters the pushing state; when the storage tube 44 moves from the rear end of the support rod 43 to the front end of the support rod 43, it can push the gas in the capsule 45 to be discharged, and the airbag is in the stowed state. When the pushing component 4 is performing the pushing operation, the length direction of the support rod 43 is the same as the direction of the packaging film roll, ensuring that the thrust direction is accurate; the capsule 45 is arranged in a conical shape, and the axial direction of the capsule 45 is parallel to the length direction of the support rod 43. The large end face of the capsule 45 faces the medicinal materials in the packaging film roll after molding, which helps to more effectively push the medicinal materials into the packaging bag and apply appropriate pressure to reduce the movement of the medicinal materials during the vacuum treatment stage. It not only solves the problem that light and fluffy Chinese medicinal materials are difficult to completely fill, but also avoids the risk of damage to medicinal materials caused by traditional rigid push plates 42, improves packaging efficiency and quality, and also ensures the stability of medicinal materials in subsequent vacuum treatment. The airbag structure is a conventional airbag, which is equipped with an air control circuit. The air control circuit is used to control the inflation and exhaust of the airbag. The air control circuit is arranged along the horizontal component 411 and the vertical component 412.

[0024] See also Figure 6The unwinding component 2 is disposed on the workbench 1 and includes a guide member 21 having a cylindrical structure. The outer side of the guide member 21 is used to guide the packaging film roll into shape, ensuring that the packaging film forms a stable bag-like structure under the action of the vertical heat sealing component 31 and the horizontal heat sealing component 32. The inner side of the guide member 21 is used to guide the medicinal materials so that they can be smoothly moved into the formed packaging film roll. Here, the structure and function of the guide member 21 are the same as those of traditional medicinal material quantitative packaging equipment. The difference is that the guide member 21 in this embodiment is movable, as follows: The material guide 21 is located above the horizontal heat sealing component 32. The material guide 21 is not fixed, but is slidably arranged on the workbench 1 and can move up and down according to the needs of the packaging process; in the stage of adding medicinal materials, the material guide 21 descends and closes the distance with the horizontal heat sealing component 32 to ensure that the medicinal materials can reach the formed packaging film roll; in the stage of pushing the material, the material guide 21 rises and opens the distance with the horizontal heat sealing component 32 to avoid the existence of the material guide 21 affecting the action of the pushing component 4.

[0025] See also Figure 9 In order to ensure that the guide member 21 moves smoothly and in the correct direction during the lifting process and to prevent deviation or jamming, a fixed rail 22 is provided between the guide member 21 and the workbench 1, and the fixed rail 22 is used to control the sliding trajectory of the guide member 21; the linkage control mechanism between the guide member 21 and the pushing member 4 is realized by the connecting rod 23, and the driving assembly 41 includes a horizontal assembly 411 for controlling the horizontal movement of the push plate 42 and a vertical assembly 412 for controlling the vertical movement of the push plate 42. A connecting rod 23 is provided between the moving end of the horizontal assembly 411 and the guide member 21, and the two ends of the connecting rod 23 are respectively rotatably provided on the moving ends of the guide member 21 and the horizontal assembly 411. The connection position between the connecting rod 23 and the material guide member 21 is located above the horizontal component 411; when the horizontal component 411 controls the push plate 42 to extend into the formed packaging film roll, the horizontal component 411 extends forward, and the material guide member 21 moves upward under the action of the connecting rod 23 and the fixed rail 22, so that the material guide member 21 automatically avoids when the pushing component 4 moves; after pushing is completed, the horizontal component 411 is retracted, the connecting rod 23 is reset, and the material guide member 21 also falls back to the initial position synchronously, preparing for the introduction of medicinal materials for the next cycle.

[0026] about Figure 6 and Figure 7Further explanation, the assembly method of the components of the driving assembly 41 in the figure is as follows: the vertical assembly 412 is set on the moving end of the horizontal assembly 411, and the push plate 42 is set on the moving end of the vertical assembly 412, so that the driving assembly 41 drives the push plate 42 to move horizontally and vertically. The connecting rod 23 is connected to the moving end of the horizontal assembly 411, and the vertical assembly 412 is set on the moving end of the horizontal assembly 411; therefore, the push plate 42 originally connected to the moving end of the horizontal assembly 411 is Figure 6 and Figure 7 The horizontal component 411 and the vertical component 412 can be connected to each other in the horizontal direction. Specifically, the horizontal component 411 and the vertical component 412 can be pneumatically controlled or hydraulically controlled telescopic rods or telescopic cylinders, slides with independent motors, etc.

[0027] See also Figure 2 、 Figure 3 、 Figure 4 The horizontal heat sealing assembly 32 includes a heat sealing seat 321, on which a first heat pressing blade 322 and a second heat pressing blade 323 are slidably mounted. A first linear moving component and a second linear moving component are respectively disposed between the first heat pressing blade 322 and the heat sealing seat 321 and between the second heat pressing blade 323 and the heat sealing seat 321. The first linear moving component and the second linear moving component drive the first heat pressing blade 322 and the second heat pressing blade 323 to complete the bottom and top sealing of the packaging film roll. A tightening wheel 33 is disposed between the horizontal heat sealing assembly 32 and the vertical heat sealing assembly 31, and the tightening wheel 33 drives the packaging film to move. The vertical heat sealing assembly 31 and the horizontal heat sealing assembly 32 have similar structures, that is, both the vertical heat sealing assembly 31 and the horizontal heat sealing assembly 32 adopt the heat sealing structure of a conventional quantitative packaging machine. The horizontal heat sealing assembly 32 and the vertical heat sealing assembly 31 described in this embodiment are based on the design concept of a conventional quantitative packaging machine and will not be described in detail.

[0028] Example 2 See also Figure 5 This embodiment discloses a vacuum packaging machine for Chinese herbal medicine slices. Based on the overall structure of the first embodiment, the structure optimization and improvement of the vertical heat sealing component 31 are mainly described as follows: During the vacuum packaging process of Chinese herbal medicine slices, the vertical heat sealing component 31 is responsible for sealing the sides of the packaging film and is a key link in forming a complete bag-like structure. Since the pushing component 4 is introduced in Example 1 to solve the problem of insufficient filling of lightweight medicinal materials, if the traditional fixed-position vertical heat sealing component 31 is directly used, it will bring the following contradictions: the vertical heat sealing component 31 needs to simultaneously apply heat pressure to both sides of the packaging film to complete the side sealing; the push plate 42 of the pushing component 4 needs to be inserted between the packaging films to complete the pushing operation. If the two are arranged at the same horizontal height, there will be spatial interference: if the push plate 42 is not withdrawn in time, it will affect the closure of the hot pressing knife, resulting in sealing failure; if the push plate 42 is still between the packaging films when the hot pressing knife is working, it may cause mechanical obstruction or damage to the film material; at the same time, if the push plate 42 needs to be completely withdrawn, it will cause the subsequent pushing action to fail to enter the packaging bag smoothly, affecting the packaging efficiency and success rate. If the two are not arranged at the same horizontal height, although the above-mentioned spatial interference problem is avoided, the vertical component 412 needs to have a larger moving stroke due to the influence of the length of the hot pressing knife in order to be able to push the medicinal materials to the bottom end of the formed packaging film roll.

[0029] To solve the above problems, this embodiment improves the vertical heat sealing assembly 31: The vertical heat-sealing assembly 31 includes a mounting base 311, which is equipped with a third linear movable member 312 and a fourth linear movable member 313. Both the third and fourth linear movable members 312 and 313 are equipped with heat-pressing wheels 314. The heat-pressing wheels 314 are driven toward each other by the third and fourth linear movable members 312 and 313, and driven by the take-up wheel 33, the heat-pressing wheels 314 complete the side sealing of the packaging film. This allows the packaging film to be sealed on its side while moving downward, rather than at a fixed position. By utilizing the vertical heat-sealing assembly 31's ability to complete the side sealing while the packaging film is moving (i.e., "sealing on the move"), the structural design challenges associated with traditional heat-pressing blades due to length limitations are effectively avoided.

[0030] Compared to the traditional heat-pressing blade structure, the use of the heat-pressing wheel 314 significantly reduces the required travel distance of the vertical component 412 when the vertical heat-sealing assembly 31 and the pusher component 4 are arranged at different horizontal heights (i.e., the pusher component 4 is located on the upper rear side of the vertical heat-sealing assembly 31), thereby reducing the design complexity and energy consumption of the actuator. At the same time, because the heat-sealing process is completed during the movement of the packaging film, the pusher component 4 can perform bag insertion and material pushing operations within the non-working area of the vertical heat-sealing assembly 31, without interfering with each other, effectively solving the spatial interference problem between the traditional heat-pressing blade and the pusher plate. Furthermore, this dynamic heat-sealing method allows the pusher component 4 to remain between the packaging films to be laterally sealed after the heat-sealing is completed without affecting the sealing process, thus achieving its continuous standby state during the packaging process, making it easier for it to quickly reach between the packaging films in the next cycle to complete the material pushing action, thereby improving overall packaging efficiency and stability.

[0031] Furthermore, a baffle 315 is provided on the mounting seat 311; when the hot pressing wheel 314 completes the side sealing and moves away, the baffle 315 limits the position of the packaging film to prevent the packaging film from contacting the hot pressing wheel 314 for a long time and causing local overheating.

[0032] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A vacuum packaging machine for Chinese herbal medicine slices, comprising a reeling unit and a packaging unit, wherein the reeling unit is used to supply a packaging film roll, and the packaging unit comprises a vertical heat sealing component and a horizontal heat sealing component for forming the packaging film roll, characterized in that: The packaging machine further comprises a material pushing component, which is located on a side of the vertical heat sealing assembly away from the packaging film; The pushing component includes a driving assembly, and a pushing plate is provided on the output end of the driving assembly; When the packaging film roll moves downward, the vertical heat sealing component performs side sealing; after the bottom is sealed by the horizontal heat sealing component, it moves downward to input the medicinal materials into the formed packaging film roll, and the driving component controls the movement of the pushing plate to extend into the formed packaging film roll to completely push the medicinal materials into the formed packaging film roll, and the horizontal heat sealing component performs top sealing on the packaging film roll; at the same time, the pushing component presses down the medicinal materials in the formed packaging film roll, thereby reducing the movement of the medicinal materials during vacuum and preventing the medicinal materials from being carried away by the vacuum airflow.

2. The vacuum packaging machine for Chinese herbal medicine slices according to claim 1, wherein: The push plate can be switched between a retracted state and a material pushing state; When the push plate is located behind the vertical heat sealing assembly, the push plate is in a retracted state; under the control of the drive assembly, the push plate extends into the formed packaging film roll, and the push plate switches from the retracted state to the pushing state, so as to completely push the medicinal materials into the formed packaging film roll; after completing the medicinal material pushing action, the push plate switches from the pushing state to the retracted state, and is retracted to the rear of the vertical heat sealing assembly under the control of the drive assembly.

3. The vacuum packaging machine for Chinese herbal medicine slices according to claim 2, wherein: The push plate adopts an airbag structure; When the airbag is inflated, the push plate switches to a pushing state; when the airbag is exhausted, the push plate switches to a retracted state; The airbag structure is used to press down the medicinal material, so that the pushing component can be adjusted according to the specific shape of the medicinal material; at the same time, physical damage to the medicinal material is avoided.

4. The vacuum packaging machine for Chinese herbal medicine slices according to claim 3, wherein: The airbag includes a support rod, a storage tube is slidably provided on the support rod, a capsule body is provided between the support rod and the storage tube, and the capsule body is located at the front end of the support rod; When the storage tube moves to the rear end of the support rod, the bladder is released and air is inflated into the bladder, so that the bladder enters a material pushing state; When the storage tube moves from the rear end of the support rod to the front end of the support rod, it can push the gas in the airbag to be discharged, and the airbag is in a stowed state.

5. The vacuum packaging machine for Chinese herbal medicine slices according to claim 4, characterized in that: When the pushing component performs the pushing operation, the length direction of the support rod is the same as the direction of the packaging film roll; the capsule is arranged in a conical shape, the axial direction of the capsule is parallel to the length direction of the support rod, and the large end face of the capsule faces the medicinal materials in the packaging film roll after molding, so as to perform the pushing operation.

6. The vacuum packaging machine for Chinese herbal medicine slices according to any one of claims 2 to 5, characterized in that: The unwinding component is arranged on a workbench, and includes a material guide having a cylindrical structure. The outer side of the material guide is used to guide the packaging film roll to be formed, and the inner side of the material guide is used to guide the medicinal materials so that the medicinal materials can be smoothly moved into the formed packaging film roll. The material guide is located above the horizontal heat sealing assembly, and the material guide is slidably arranged on the workbench; When adding medicinal materials into the formed packaging film roll, the material guide member descends and the horizontal heat sealing component is shortened to ensure that the medicinal materials can reach the formed packaging film roll; When the pushing component performs a pushing operation, the material guiding component rises and is spaced apart from the horizontal heat sealing assembly, so as to prevent the existence of the material guiding component from affecting the movement of the pushing component.

7. The vacuum packaging machine for Chinese herbal medicine slices according to claim 6, characterized in that: A fixed rail is provided between the material guide member and the workbench, and the fixed rail is used to control the sliding track of the material guide member; The driving assembly includes a horizontal assembly for controlling the horizontal movement of the push plate and a vertical assembly for controlling the vertical movement of the push plate. A connecting rod is provided between the movable end of the horizontal assembly and the material guide member. Both ends of the connecting rod are rotatably provided on the material guide member and the movable end of the horizontal assembly, respectively. The connection position of the connecting rod and the material guide member is located above the horizontal assembly. When the horizontal component controls the push plate to extend into the formed packaging film roll, the material guide member moves upward under the action of the connecting rod and the fixed rail, so that the material guide member automatically avoids when the pushing component moves.

8. The vacuum packaging machine for Chinese herbal medicine slices according to any one of claims 1 to 5, characterized in that: The horizontal heat sealing assembly includes a heat sealing seat, on which a first heat pressing knife and a second heat pressing knife are slidably arranged respectively. A first linear moving component and a second linear moving component are respectively arranged between the first heat pressing knife and the heat sealing seat and between the second heat pressing knife and the heat sealing seat. The first linear moving component and the second linear moving component drive the first heat pressing knife and the second heat pressing knife to complete bottom sealing and top sealing of the packaging film roll; A tightening wheel is provided between the horizontal heat sealing assembly and the vertical heat sealing assembly, and the tightening wheel drives the packaging film to move; The vertical heat sealing assembly includes a mounting base, which is provided with a third linear moving part and a fourth linear moving part. The third linear moving part and the fourth linear moving part are both provided with hot pressing wheels. The third linear moving part and the fourth linear moving part drive the hot pressing wheels to approach each other, and under the drive of the tightening wheel, the side sealing of the packaging film is completed.

9. The vacuum packaging machine for Chinese herbal medicine slices according to claim 8, characterized in that: A baffle is provided on the mounting seat; When the hot pressing wheel completes the side sealing and moves away, the baffle limits the position of the packaging film to prevent the packaging film from contacting the hot pressing wheel for a long time and causing local overheating.

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