Transition mechanism, freeze dryer and control method of transition mechanism

Abstract

The application relates to a transition mechanism, a freeze dryer and a control method of the transition mechanism. A transition mechanism is applied to a freeze dryer, the freeze dryer comprises a freeze dryer body and a conveying mechanism, and the transition mechanism comprises a support, a carrier which is slidingly matched with the support along a first direction, the first direction being parallel to an in-out direction of materials in and out of the freeze dryer body, and a turnover assembly which is rotationally matched with the carrier; the turnover assembly comprises a first turnover plate and a second turnover plate which are rotationally connected, and in a working state, the first turnover plate and the second turnover plate constitute a transition platform for bridging the freeze dryer body and the conveying mechanism. The above scheme can improve the motion adjustment flexibility of the transition mechanism plate body, optimize the docking adaptability of the conveying mechanism and the freeze dryer body, ensure the material transfer stability, and meet the efficient and stable operation requirements of the automatic in-out material of the freeze dryer.

Description

Technical Field

[0001] This application relates to the field of freeze dryer technology, and in particular to a transition mechanism, a freeze dryer, and a control method for the transition mechanism. Background Technology

[0002] In an automated feeder / discharge production line for freeze dryers, the transition mechanism, acting as a material transfer bridge between the conveying mechanism and the freeze dryer body, directly impacts the docking adaptability and material transfer stability due to the flexibility of its plate movement adjustment. In related technologies, many transition mechanisms lack sufficient plate movement adjustment capabilities, exhibiting poor docking adaptability with the conveying mechanism and freeze dryer body, easily leading to docking deviations and unstable material transfer processes, thus failing to meet the high-efficiency and stable operation requirements of automated feeder / discharge freeze dryers. Summary of the Invention

[0003] Therefore, it is necessary to provide a control method for the transition mechanism, the freeze dryer, and the transition mechanism to improve the flexibility of the movement adjustment of the transition mechanism plate, optimize the docking and compatibility with the conveying mechanism and the freeze dryer body, ensure the stability of material transfer, and meet the high-efficiency and stable operation requirements of the freeze dryer for automatic feeding and discharging.

[0004] A transition mechanism is applied to a freeze dryer, the freeze dryer including a freeze dryer body and a conveying mechanism, the transition mechanism comprising:

[0005] support;

[0006] A platform, slidably fitted to the support along a first direction, the first direction being parallel to the material feeding and discharging direction of the freeze dryer body; and

[0007] A flipping assembly is rotatably fitted to the platform; the flipping assembly includes a first flip plate and a second flip plate that are rotatably connected. In the working state, the first flip plate and the second flip plate form a transition platform for bridging the freeze dryer body and the conveying mechanism.

[0008] In some embodiments, the flipping assembly includes a rotating arm, one end of the second flip plate is rotatably connected to the first flip plate, the other end is rotatably connected to the rotating arm, and the end of the rotating arm away from the second flip plate is rotatably connected to the platform.

[0009] In some embodiments, the flipping component includes:

[0010] The first drive module is installed inside the platform and connected to the rotating arm to drive the rotating arm to rotate relative to the platform.

[0011] The second drive module is installed inside the second flap and connected to the rotating arm to drive the second flap to rotate relative to the rotating arm;

[0012] The third drive module is installed inside the second flap and connected to the first flap to drive the first flap to rotate relative to the second flap.

[0013] In some embodiments, the first drive module includes a first rotating shaft rotatably connected to the platform, and the second drive module includes a second rotating shaft rotatably connected to the second flip plate. The first rotating shaft and the second rotating shaft are respectively fixed to both ends of the rotating arm. The second rotating shaft, the rotating arm and the first rotating shaft are hollow inside and communicate with each other at the connection point.

[0014] In some embodiments, in the working state, the first flap and the second flap are horizontally arranged; in the storage state, the first flap and the second flap are vertically arranged, and the rotating arm has a clearance groove on the side facing the conveying mechanism for avoiding the conveying mechanism.

[0015] In some embodiments, the rotating arm includes a first segment, a second segment, and a third segment connected in sequence, wherein the end of the first segment away from the second segment is rotatably connected to the platform, and the end of the third segment away from the second segment is rotatably connected to the second flap.

[0016] In the stored state, the first segment is positioned from the platform toward the side closer to the freeze dryer body, the two ends of the second segment are respectively connected to the first segment and the third segment, and the first segment and the third segment are located on the side of the second segment away from the freeze dryer body, and the first segment, the second segment and the third segment form the clearance groove.

[0017] In some embodiments, the end of the second flap away from the first flap has a docking portion, and in the working state, the docking portion is used to engage with the conveying mechanism; the platform can slide along the first direction to adjust the insertion depth of the docking portion.

[0018] In some embodiments, the end of the first flap away from the second flap has a first snap-fit ​​portion, which is used to insert and / or snap-fit ​​with the movable plate of the freeze dryer body.

[0019] A freeze dryer includes the aforementioned transition mechanism, and further includes a feeding mechanism, the freeze dryer body, and the conveying mechanism. The feeding mechanism is capable of pushing the material on the conveying mechanism into the freeze dryer body via the transition platform during loading, and pushing the material in the freeze dryer body to the conveying mechanism via the transition platform during unloading.

[0020] In some embodiments, the freeze dryer body includes a housing and a feed door. The housing has a freeze-drying chamber and a feed inlet communicating with the freeze-drying chamber. The feed door is movable relative to the housing to block or open the feed inlet. The feed door has an internal flow channel for supplying medium flow.

[0021] In some embodiments, the flow channel inside the door includes a plurality of flow sections connected in sequence, wherein the extension directions of any adjacent flow sections are arranged at an angle.

[0022] In some embodiments, the housing is provided with a feed gate shaft that is rotatably connected thereto. The feed gate is fixedly connected to the feed gate shaft, and the feed gate shaft can realize the communication between the flow channel inside the gate and the external heat exchange medium during rotation.

[0023] In some embodiments, the feed gate shaft has an independent inflow section and an outflow section inside, the liquid inlet of the flow channel inside the gate and the inflow section are connected by a liquid inlet pipe, and the liquid outlet of the flow channel inside the gate and the outflow section are connected by a liquid outlet pipe.

[0024] In some embodiments, the freeze dryer body includes a door lock assembly, which includes a driver mounted on the housing and a locking pin connected to the driver. When the feed door blocks the feed inlet, the driver can drive the locking pin to move to lock the feed door.

[0025] In some embodiments, the freeze dryer body has a freeze drying chamber, which is provided with a plurality of movable plates arranged in a vertical direction. The movable plates are movable in the vertical direction to dock with the transition platform.

[0026] In some embodiments, the feeding mechanism includes a material feeding pusher plate and a loading / unloading pusher plate assembly; the material feeding pusher plate is disposed on the side of the conveying mechanism opposite to the transition platform and is used to push the material on the conveying mechanism to the transition platform during feeding; the loading / unloading pusher plate assembly is configured to move along the first direction under magnetic force to push the material arriving at the transition platform into the freeze dryer body during feeding and enter the freeze dryer body during unloading, pushing the material in the freeze dryer body to the conveying mechanism via the transition platform.

[0027] In some embodiments, the loading and unloading pusher assembly includes a first pusher and a second pusher arranged along the first direction, the first pusher and the second pusher being configured to retract and lower the pusher by rotation.

[0028] In some embodiments, the feeding mechanism includes a magnetic screw, a magnetic nut, and a trolley. The magnetic nut is mounted on the trolley, and the first push plate and the second push plate are rotatably connected to the trolley. The rotating magnetic screw drives the magnetic nut to move along the first direction by magnetic force.

[0029] In some embodiments, the magnetic screw includes a first part installed inside the freeze dryer body, a second part installed on the first flap, and a third part installed on the second flap. The first part, the second part, and the third part are detachably connected in sequence. In the working state, the magnetic screw extends along the first direction.

[0030] A control method for a transition mechanism, used to control the operation of the aforementioned transition mechanism, the control method comprising:

[0031] When switching from the working state to the storage state, the platform is controlled to move away from the main body of the freeze dryer, and the entire flipping assembly rotates away from the main body of the freeze dryer.

[0032] The second flap is controlled to rotate downward relative to the platform, and the first flap rotates downward relative to the second flap, with the included angle between the first flap and the second flap gradually decreasing;

[0033] The second flap is controlled to rotate upward relative to the platform, while the first flap continues to rotate downward relative to the second flap, and the included angle between the first flap and the second flap continues to decrease;

[0034] The second flap stops rotating after it reaches a vertical position; the first flap is controlled to rotate upward relative to the second flap until the first flap reaches a vertical position.

[0035] The aforementioned transition mechanism, freeze dryer, and control method involve a platform slidingly fitted onto a support along a first direction (parallel to the material feeding / discharging direction of the freeze dryer body). This sliding fit allows the platform to flexibly adjust the position of the tilting assembly along the material feeding / discharging direction. Simultaneously, the tilting assembly rotates onto the platform and includes a first and second tilting plate rotatably connected. The rotational fit between the tilting assembly and the platform enables overall posture adjustment of the tilting assembly, while the rotational connection between the first and second tilting plates allows for separate angle adjustment. In summary, the coordinated adjustment of the translational position, the overall posture adjustment of the tilting assembly, and the separate angle adjustment between the two tilting plates achieves multi-dimensional and precise motion adjustment of the transition mechanism, enhancing the flexibility of plate movement adjustment. Adaptability adjustments can be made according to the actual docking conditions between the freeze dryer body and the conveying mechanism, optimizing the docking compatibility with the conveying mechanism and the freeze dryer body, ensuring stable material transfer, and meeting the efficient and stable automatic feeding and discharging operation requirements of the freeze dryer. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a transition mechanism in one embodiment of this application.

[0037] Figure 2 This is a schematic diagram showing the position of the transition mechanism in its working state in one embodiment of this application.

[0038] Figure 3 This is a schematic diagram showing the position of the transition mechanism in its stowed state in one embodiment of this application.

[0039] Figure 4 This is a schematic diagram of the internal structure of the platform and the second flap in one embodiment of this application.

[0040] Figure 5 This is a side view of a freeze dryer in one embodiment of this application (with the transition mechanism in operation).

[0041] Figure 6 This is an isometric perspective view of a freeze dryer in one embodiment of this application (with the transition mechanism in operation).

[0042] Figure 7 This is a side view of a freeze dryer in one embodiment of this application (the transition mechanism is in a retracted state).

[0043] Figure 8 This is a schematic diagram of the structure of the feeding door, door lock assembly, and door drive assembly in one embodiment of this application.

[0044] Figure 9 This is a partial enlarged view of the door lock assembly in one embodiment of this application.

[0045] Figure 10 This is a schematic diagram of the feeding mechanism in one embodiment of this application.

[0046] Figure label:

[0047] 1. Freeze dryer body; 101. Housing; 1011. Freeze drying chamber; 1012. Feed inlet; 102. Door lock assembly; 1021. Driver; 1022. Locking pin; 1023. Lock frame; 2. Feeding mechanism; 201. Material handling push plate; 202. Loading and unloading push plate assembly; 2021. First push plate; 2022. Second push plate; 203. Magnetic screw; 2031. First part; 2032. Second part; 2033. Third part; 204. Trolley; 4. Support; 401. Slide rail; 5. First flip plate; 6. Second flip plate; 601. Connecting part; 7. First locking part; 16. Moving plate; 1601. Fourth locking part; 17. Feed door; 1701. Inner flow channel; 18. Conveying mechanism; 1801. Comb plate; 22. Platform; 2201. Slider; 2202. Cable routing hole; 23. Rotating arm; 2301. Clearance groove; 2302. First section; 2303. Second section; 2304. Third section; 24. First drive module; 2401. First drive component; 2402. First rotating shaft; 2403. First belt drive structure; 2404. First connecting shaft; 25. Second drive module; 2502. Second rotating shaft; 26. Third drive module; 2602. Third rotating shaft; 27. Swing arm; 28. Feed gate rotating shaft; 2801. Inflow section; 2802. Outflow section; 29. ​​Liquid inlet pipe; 30. Liquid outlet pipe; 31. Gate drive assembly. Detailed Implementation

[0048] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] See Figure 1 ,as well as Figures 5 to 7 This application provides a transition mechanism in one embodiment, applied to a freeze dryer, which includes a freeze dryer body 1 and a conveying mechanism 18. The transition mechanism includes a support 4, a platform 22, and a tilting assembly. The platform 22 is slidably fitted to the support 4 along a first direction, parallel to the material feeding and discharging direction of the freeze dryer body 1. The tilting assembly is rotatably fitted to the platform 22. The tilting assembly includes a first flip plate 5 and a second flip plate 6 rotatably connected. In operation, the first flip plate 5 and the second flip plate 6 form a transition platform for bridging the freeze dryer body 1 and the conveying mechanism 18.

[0050] In the above embodiment, the platform 22 is slidably fitted to the bracket 4 along the first direction (parallel to the material feeding and discharging direction of the freeze dryer body 1). This sliding fit structure allows the platform 22 to drive the flipping component to flexibly translate and adjust its position along the feeding and discharging direction. At the same time, the flipping component is rotatably fitted to the platform 22, and the flipping component includes a first flip plate 5 and a second flip plate 6 rotatably connected. The rotatable fit between the flipping component and the platform 22 can realize the overall posture adjustment of the flipping component, while the rotatable connection between the first flip plate 5 and the second flip plate 6 can realize the separate angle adjustment of the two. In summary, the translational position adjustment, the overall posture adjustment of the flipping component, and the separate angle adjustment between the two flip plates work together to realize multi-dimensional and refined motion adjustment of the transition mechanism, improve the flexibility of plate motion adjustment, and can be adapted to the actual docking conditions of the freeze dryer body 1 and the conveying mechanism 18. This optimizes the docking adaptability with the conveying mechanism 18 and the freeze dryer body 1, ensures the stability of material transfer, and meets the efficient and stable operation requirements of the freeze dryer for automatic feeding and discharging.

[0051] Specifically, the freeze dryer body 1 includes a housing 101, which has a freeze-drying chamber 1011 and a feed inlet 1012 connected to the freeze-drying chamber 1011. The freeze-drying chamber 1011 is equipped with multi-layer movable plates 16 for carrying materials. The movable plates 16 can be moved to dock with a transition platform, providing a receiving base for loading and unloading materials. The material conveying direction (i.e., the second direction) of the conveying mechanism 18 is perpendicular to the first direction, and both are in a horizontal plane. The transition mechanism has... Figure 2 The working status shown and as follows Figure 3 The diagram shows the storage state. The working state includes a feeding stage and a discharging stage, during which the feed door 17 is open and the feed inlet 1012 is connected to the outside. During the feeding stage, the material is fed into the freeze dryer body 1 through the feed inlet 1012 to await freeze drying; during the discharging stage, the freeze-dried material is discharged from the freeze dryer body 1 through the feed inlet 1012. When the transition mechanism is in the storage state, it can avoid the freeze dryer body 1. At this time, the feed door 17 of the freeze dryer body 1 can be closed, and the freeze dryer body 1 can start the freeze drying process.

[0052] See also Figure 10 More specifically, during the feeding stage, the conveying mechanism 18 conveys the material to a preset position (specifically, the front side of the material handling push plate 201, which will be described in detail in subsequent embodiments), and the feeding mechanism 2 precisely pushes the material along the transition platform onto the moving plate 16 of the freeze dryer body 1; during the unloading stage, part of the structure of the feeding mechanism 2 extends into the freeze dryer body 1, and pushes the freeze-dried material to the conveying mechanism 18 via the transition platform, whereby the conveying mechanism 18 completes the subsequent transfer.

[0053] Based on the structural design of the transition mechanism, it can achieve multi-dimensional adjustment while conveniently completing the avoidance action of the freeze dryer body 1. For example, after the loading or unloading process is completed, the transition mechanism can switch to the storage state to avoid the feed door 17 and feed inlet 1012 of the freeze dryer body 1, making it easy to close the feed door 17. In addition, during the process of the multi-layer moving plate 16 rising and falling in the vertical direction and docking with the transition platform in sequence, the platform 22 can move backward in the first direction to avoid the moving plate 16, avoid interference between the moving plate 16 and the transition mechanism when it rises and falls, and ensure the continuous and smooth operation of loading and unloading.

[0054] See Figure 1 In some embodiments, a slide rail 401 extending along a first direction is connected to the bracket 4, and a slider 2201 is connected to the platform 22. The slider 2201 is slidably engaged with the slide rail 401 so that the platform 22 can be slidably engaged with the bracket 4 along the first direction, thereby guiding and limiting the sliding of the platform 22 relative to the bracket 4 and improving the smoothness of its sliding.

[0055] See Figures 1 to 3 In some embodiments, the flipping assembly includes a rotating arm 23, one end of the second flip plate 6 is rotatably connected to the first flip plate 5, the other end is rotatably connected to the rotating arm 23, and the end of the rotating arm 23 away from the second flip plate 6 is rotatably connected to the platform 22.

[0056] Specifically, the rotating arm 23 serves as a connecting medium, with one end rotatably connected to the platform 22 and the other end rotatably connected to the end of the second flap 6 furthest from the first flap 5. The end of the second flap 6 closest to the first flap 5 is rotatably connected to the first flap 5. All three rotation axes (parallel to the second direction) are located in the horizontal plane and perpendicular to the first direction. In the working state, the rotating arm 23 rotates downward relative to the platform 22, simultaneously cooperating with the rotation of the second flap 6 relative to the rotating arm 23 and the relative rotation of the two flaps to form a flat transition platform. In the storage state, the rotating arm 23 rotates upward relative to the platform 22, simultaneously cooperating with the rotation of the second flap 6 relative to the rotating arm 23 and the relative rotation of the two flaps to avoid obstructing the freeze dryer body 1, ultimately resulting in the second flap 6 and the first flap 5 standing vertically above the platform 22.

[0057] In the above embodiments, a multi-stage rotation structure is built by the rotating arm 23, which enriches the freedom of motion adjustment of the flipping component, making the unfolding and retraction of the first flip plate 5 and the second flip plate 6 smoother, and can better adjust the docking angle and position of the transition platform, improve the docking compatibility with the freeze dryer body 1 and the conveying mechanism 18, and can also effectively avoid the freeze dryer body 1 when storing.

[0058] See Figures 1 to 4In some embodiments, the flipping assembly includes a first drive module 24, a second drive module 25, and a third drive module 26. The first drive module 24 is installed inside the platform 22 and connected to the rotating arm 23 to drive the rotating arm 23 to rotate relative to the platform 22; the second drive module 25 is installed inside the second flip plate 6 and connected to the rotating arm 23 to drive the second flip plate 6 to rotate relative to the rotating arm 23; the third drive module 26 is installed inside the second flip plate 6 and connected to the first flip plate 5 to drive the first flip plate 5 to rotate relative to the second flip plate 6.

[0059] In the above embodiments, three drive modules independently drive the relative rotation of the rotating arm 23, the first flap 5, and the second flap 6, ensuring precise control of each motion node in the multi-stage rotating structure and adapting to various docking conditions between the freeze dryer body 1 and the conveying mechanism 18. Furthermore, the design of the drive modules being built into the corresponding components enables the internal encapsulation of electrical components, eliminating exposed parts and meeting stringent waterproof and explosion-proof requirements. It also reduces blind spots in cleaning and sterilization, improves the convenience of cleaning and disinfection, and allows for a more compact structural layout.

[0060] See Figures 1 to 4 In some embodiments, the first drive module 24 includes a first rotating shaft 2402 rotatably connected to the platform 22, and the second drive module 25 includes a second rotating shaft 2502 rotatably connected to the second flip plate 6. The first rotating shaft 2402 and the second rotating shaft 2502 are respectively fixedly connected to the two ends of the rotating arm 23. The second rotating shaft 2502, the rotating arm 23 and the first rotating shaft 2402 are hollow inside and interconnected at the connection point.

[0061] In the above embodiments, the first rotating shaft 2402, the rotating arm 23, and the second rotating shaft 2502 are designed as hollow and interconnected structures, providing built-in wiring channels for the cables of each drive module, realizing a concealed cable layout, and eliminating exposed wiring structures in the equipment. This reduces blind spots in cleaning and sterilization, improves the convenience of cleaning and disinfection, protects cables from wear and tear by materials and the environment, and makes the overall structure simpler and more compact, further optimizing the space utilization and reliability of the equipment.

[0062] Furthermore, the bottom wall of the platform 22 is provided with a wiring hole 2202, through which the cables of the second drive module 25 and the third drive module 26 can pass sequentially through the second rotating shaft 2502 and the rotating arm 23 into the first rotating shaft 2402, and then exit through the wiring hole 2202. The cable of the first drive module 24 can also exit through the wiring hole 2202.

[0063] See Figures 1 to 4 In some embodiments, the flipping assembly includes two rotating arms 23 spaced apart. One end of each rotating arm 23 is rotatably connected to both ends of the second flip plate 6, and the other end of each rotating arm 23 is rotatably connected to both ends of the platform 22. This improves the smoothness of the flipping assembly's rotation.

[0064] Specifically, the first drive module 24 includes two first rotating shafts 2402 rotatably connected to the platform 22. The ends of the two first rotating shafts 2402 that are close to each other are spaced apart to form a wiring gap. The cable can pass through this gap and exit the wiring hole 2202. The ends of the two first rotating shafts 2402 that are opposite to each other are respectively fixedly connected to two rotating arms 23.

[0065] Furthermore, the first drive module 24 includes a first drive component 2401, a first connecting shaft 2404, and two first belt drive structures 2403. The first drive component 2401 is a motor, which is fixedly installed inside the platform 22 and connected to the first connecting shaft 2404 to drive the first connecting shaft 2404 to rotate. The two first belt drive structures 2403 are spaced apart on the first connecting shaft 2404, and the two first belt drive structures 2403 are correspondingly connected to the two first rotating shafts 2402 to transmit power to the corresponding first rotating shafts 2402. In this way, synchronous driving of the two spaced first rotating shafts 2402 can be achieved through one first drive component 2401, thereby achieving synchronous driving of the two rotating arms 23.

[0066] Similarly, in some embodiments, the second drive module 25 includes two second rotating shafts 2502 rotatably connected to the second flap 6. The ends of the two second rotating shafts 2502 that are close to each other are spaced apart, while the ends that are opposite to each other are fixedly connected to two rotating arms 23. The second drive module 25 includes a second drive component (specifically a motor), which is fixedly installed inside the second flap 6 and connected to a second connecting shaft to drive the second connecting shaft to rotate. Two second belt drive structures are spaced apart on the second connecting shaft, and the two second belt drive structures are correspondingly connected to the two second rotating shafts 2502 to transmit power to the corresponding second rotating shafts 2502. Since the second rotating shafts 2502 are fixed to the rotating arms 23 and the second drive component is fixed to the second flap 6, the second flap 6 will ultimately rotate relative to the rotating arms 23 around the second rotating shafts 2502.

[0067] Similarly, in some embodiments, the third drive module 26 includes two third rotating shafts 2602 rotatably connected to the second flap 6. The ends of the two third rotating shafts 2602 that are close to each other are spaced apart, while the ends that are opposite to each other are fixedly connected to both ends of the first flap 5. The third drive module 26 includes a third drive component (specifically a motor), which is fixedly installed inside the second flap 6 and connected to a third connecting shaft to drive the third connecting shaft to rotate. Two third belt drive structures are spaced apart on the third connecting shaft, and the two third belt drive structures are correspondingly connected to the two third rotating shafts 2602 to transmit power to the corresponding third rotating shafts 2602, thereby driving the first flap 5 to rotate relative to the second flap 6.

[0068] See Figures 1 to 3 ,as well as Figure 7 In some embodiments, in the working state, the first flap 5 and the second flap 6 are horizontally arranged; in the storage state, the first flap 5 and the second flap 6 are vertically arranged, and the rotating arm 23 has a clearance groove 2301 on the side facing the conveying mechanism 18 for avoiding the conveying mechanism 18.

[0069] In the working state, the first flip plate 5 and the second flip plate 6 remain horizontal and coplanar, forming a flat transition platform to ensure smooth material conveying. In the storage state, the two stand vertically above the platform 22. At this time, the side of the rotating arm 23 away from the freeze dryer body 1 faces the conveying mechanism 18. The clearance groove 2301 opened on it can avoid the conveying mechanism 18, so that the transition mechanism does not occupy the working space of the conveying mechanism 18 after being stored, and also avoids collision interference between equipment, making the spatial layout of the whole machine more compact and reasonable.

[0070] See Figure 3 and Figure 7 Furthermore, in some embodiments, the rotating arm 23 includes a first segment 2302, a second segment 2303, and a third segment 2304 connected in sequence. The end of the first segment 2302 away from the second segment 2303 is rotatably connected to the platform 22, and the end of the third segment 2304 away from the second segment 2303 is rotatably connected to the second flap 6. In the stored state, the first segment 2302 is set from the platform 22 toward the side closer to the freeze dryer body 1. The two ends of the second segment 2303 are respectively connected to the first segment 2302 and the third segment 2304, and the first segment 2302 and the third segment 2304 are located on the side of the second segment 2303 away from the freeze dryer body 1. The first segment 2302, the second segment 2303, and the third segment 2304 form a clearance groove 2301.

[0071] Specifically, the rotating arm 23 is integrally formed in three sections, resembling a "C" shape. In its retracted state, the rotating arm 23 bends towards the freeze dryer body 1. The first section 2302 extends from the platform 22 towards the freeze dryer body 1, and its extension direction can be parallel to or at an angle to the first direction. The second section 2303 extends upwards from the first section 2302. The third section 2304 extends away from the second section 2303 towards the freeze dryer body 1, and its extension direction can be parallel to or at an angle to the first direction. Furthermore, as... Figure 7 As shown, in the storage state, the bearing surfaces of the first flap 5 and the second flap 6 (that is, the surfaces used to bear materials in the working state) face away from the freeze dryer body 1, that is, towards the operator, so that the operator can clean them.

[0072] See Figure 1 and Figure 6In some embodiments, the end of the second flap 6 away from the first flap 5 has a docking part 601. In the working state, the docking part 601 is used to engage with the conveying mechanism 18. The platform 22 can slide along the first direction to adjust the insertion depth of the docking part 601.

[0073] Specifically, the docking part 601 has a comb-tooth structure, and its tooth shape is adapted to the front end of the comb plate 1801 of the conveying mechanism 18. In the working state, the comb teeth are interlocked to form a stable connection. When the platform 22 slides along the first direction, the depth of the docking part 601 inserted into the comb plate 1801 can be precisely adjusted to ensure a stable connection between the transition platform and the conveying mechanism 18. This plug-in mating structure not only ensures that the material smoothly transitions from the conveying mechanism 18 to the second flip plate 6 and the first flip plate 5, but also avoids the moving plates 16 by adjusting the insertion depth during the loading and unloading process of multiple moving plates 16, ensuring the continuous and efficient operation of the whole machine.

[0074] In the above embodiments, the docking part 601 is inserted into the conveying mechanism 18, and the insertion depth is adjusted by sliding the platform 22 to achieve precise alignment between the transition mechanism and the conveying mechanism 18, thereby improving docking stability. The comb-shaped docking part 601 cooperates with the comb structure at the front end of the comb plate 1801, which not only ensures the smoothness of material conveying but also enhances the structural rigidity of the docking point, preventing material from getting stuck or falling during the transition. At the same time, the insertion depth can be flexibly adjusted according to different material specifications or conveying speeds to optimize the material transfer path.

[0075] In other embodiments, the docking part 601 and the conveying mechanism 18 can also adopt the form of plug-in connection of the socket and the pin. The pin is inserted into the corresponding socket to form a precise positioning connection, which can also realize the fixation of the docking position and the adjustment of the insertion depth, adapting to different equipment docking conditions and production needs.

[0076] See Figure 1 , Figure 2 and Figure 5 In some embodiments, the end of the first flap 5 away from the second flap 6 has a first snap-fit ​​portion 7, which is used to insert and / or snap-fit ​​with the movable plate 16 of the freeze dryer body 1.

[0077] In the above embodiments, the first snap-fit ​​part 7 is inserted into and / or snap-fitted into the movable plate 16 (specifically, the fourth snap-fit ​​part 1601 provided at the end of the movable plate 16 near the first flip plate 5), thereby achieving precise positioning and stable connection between the transition mechanism and the movable plate 16, eliminating gaps and steps at the docking point, ensuring the stability of material transfer, and preventing material tipping or falling. At the same time, the insertion / snap-fitting configuration allows for easy assembly and disassembly, does not affect the rapid switching and docking of the multi-layer movable plates 16, and ensures efficient loading and unloading operations.

[0078] Specifically, the fourth snap-fit ​​part 1601 is a protruding post structure protruding from the end of the movable plate, and the first snap-fit ​​part 7 is correspondingly a slot structure. In the working state, the protruding post is embedded into the slot to form a snap-fit ​​engagement, realizing a seamless connection between the transition platform and the movable plate 16. The platform 22 can move along the first direction to drive the slot and the protruding post to complete docking or separation, which is simple and efficient. Of course, the two can also adopt other plugging and / or snap-fit ​​forms such as protruding post and insertion hole, snap block and snap hook, or comb teeth interlacing, as long as the mating structure can achieve precise positioning and stable connection.

[0079] See Figure 1 , Figures 5 to 7 The freeze dryer provided in one embodiment of this application includes the transition mechanism in any of the foregoing embodiments, and also includes a feeding mechanism 2, a freeze dryer body 1 and a conveying mechanism 18. The feeding mechanism 2 can push the material on the conveying mechanism 18 into the freeze dryer body 1 via the transition platform when feeding, and push the material in the freeze dryer body 1 to the conveying mechanism 18 via the transition platform when unloading.

[0080] In the above embodiments, the transition mechanism, feeding mechanism 2, freeze dryer body 1, and conveying mechanism 18 form an integrated automatic feeding and discharging system, realizing the fully automated connection of materials from conveying and transferring to freeze drying, and improving the operational efficiency of freeze drying production. As the core transfer bridge, the transition mechanism's multi-dimensional adjustment and stable connection characteristics make the transfer of materials between the conveying mechanism 18 and the freeze dryer body 1 smoother. Combined with the precise pushing of the feeding mechanism 2, it effectively reduces material transfer losses.

[0081] See Figures 5 to 7 ,as well as Figure 10 In some embodiments, the feeding mechanism 2 includes a material feeding pusher 201 and a loading and unloading pusher assembly 202; the material feeding pusher 201 is disposed on the side of the conveying mechanism 18 away from the transition platform and is used to push the material on the conveying mechanism 18 to the transition platform during feeding; the loading and unloading pusher assembly 202 is configured to move along a first direction under magnetic force to push the material reaching the transition platform into the freeze dryer body 1 during feeding and enter the freeze dryer body 1 during unloading, pushing the material in the freeze dryer body 1 to the conveying mechanism 18 via the transition platform.

[0082] Specifically, during the feeding stage, when the conveying mechanism 18 delivers the first batch of material to the front of the material handling pusher plate 201, the material handling pusher plate 201 first pushes the first batch of material forward by one row, deviating it from the conveying path of the conveying mechanism 18 (to avoid interference with subsequent materials). After the conveying mechanism 18 delivers the second batch of material, the material handling pusher plate 201 pushes the second batch of material forward along with the first batch of material by one row... This process is repeated to complete multiple short pushes of materials. Then, the material handling pusher plate 201 pushes the temporarily stored multiple rows of material forward, ensuring that all of them reach the transition platform. Then, the loading and unloading pusher plate assembly 202 moves forward under magnetic force, pushing the multiple rows of material onto the moving plate 16 inside the freeze-drying chamber 1011. After the feeding is completed, the loading and unloading pusher plate assembly 202 exits the freeze-drying chamber 1011. During the unloading stage, the loading and unloading pusher assembly 202 extends into the freeze dryer body 1 under magnetic force, pushing the freeze-dried material on the moving plate 16 to the conveying mechanism 18 via the transition platform, and then the conveying mechanism 18 transports the material away.

[0083] In the above embodiments, the material feeding pusher 201 and the loading and unloading pusher assembly 202 work together to achieve material connection between the conveying mechanism 18 and the freeze dryer body 1, realize automatic loading and unloading, improve production efficiency, and the loading and unloading pusher assembly 202 moves under magnetic force, has good overload protection characteristics, moves smoothly and controls precisely, can effectively reduce equipment operating noise, and improve the reliability and sterility guarantee level of the feeding process.

[0084] See Figures 5 to 7 ,as well as Figure 10 In some embodiments, the loading and unloading pusher assembly 202 includes a first pusher 2021 and a second pusher 2022 arranged along a first direction, the first pusher 2021 and the second pusher 2022 being configured to retract and lower the pusher by rotating.

[0085] Specifically, the first pusher plate 2021 is located in front of the second pusher plate 2022, that is, the first pusher plate 2021 is located on the side closer to the freeze dryer body 1. Both pushers can be retracted when rotated upwards to avoid material, and can be lowered when rotated downwards to push the material. During the loading stage, as the material handling pusher plate 201 pushes the material to the transition platform, both pushers retract to avoid material; once the material reaches the transition platform, the second pusher plate 2022 lowers, pushing the material forward onto the moving plate 16 of the freeze-drying chamber 1011. During the unloading stage, the loading / unloading pusher plate assembly 202 first enters the freeze-drying chamber 1011, reaching the front end of the freeze-drying chamber 1011, during which both pushers retract to avoid material; then the first pusher plate 2021 lowers, pushing the material backwards. When the loading and unloading pusher assembly 202 moves backward to the end of its stroke, the first pusher 2021 retracts, and the loading and unloading pusher assembly 202 moves forward (towards the freeze dryer body 1) a certain distance. Then the second pusher 2022 is lowered, and the material is pushed backward by the second pusher 2022 until the material reaches the conveying range of the conveying mechanism 18 via the transition platform.

[0086] In the above embodiments, by rotating and retracting or lowering the two push plates, combined with movement along the first direction, material can be pushed in different directions. In other embodiments, the first push plate 2021 and the second push plate 2022 are configured to retract and lower the push plate by moving up and down.

[0087] See Figures 5 to 7 ,as well as Figure 10 In some embodiments, the feeding mechanism 2 includes a magnetic screw 203, a magnetic nut, and a trolley 204. The magnetic nut is mounted on the trolley 204, and the first push plate 2021 and the second push plate 2022 are rotatably connected to the trolley 204. The rotating magnetic screw 203 drives the magnetic nut to move along a first direction by magnetic force.

[0088] Specifically, the magnetic nut is fixedly installed inside the trolley 204, and is suspended outside the magnetic screw 203. The magnetic nut contains a permanent magnet, and the magnetic screw 203 contains a permanent magnet or an electromagnetic coil. Driven by a motor or other driving components, the magnetic screw 203 rotates, generating a rotating magnetic field. This rotating magnetic field forms a magnetic coupling with the permanent magnet inside the magnetic nut, driving the magnetic nut to move linearly along the axial direction of the magnetic screw 203. This, in turn, drives the trolley 204 and the two push plates rotatably connected to the trolley 204 to move along a first direction to push materials.

[0089] In the above embodiments, magnetic non-contact transmission is adopted, with no direct mechanical contact between the magnetic screw 203 and the magnetic nut. This avoids particulate matter generated by friction and wear, as well as volatile contamination from lubricating media, meeting the requirements for use in high-cleanliness environments such as pharmaceutical manufacturing. Simultaneously, magnetic coupling transmission has excellent overload protection characteristics, smooth movement, and precise control, effectively reducing equipment operating noise and improving the reliability and aseptic assurance level of the feeding process.

[0090] See Figures 5 to 7 ,as well as Figure 10 In some embodiments, the magnetic screw 203 includes a first part 2031 installed in the freeze dryer body 1, a second part 2032 installed on the first flap 5, and a third part 2033 installed on the second flap 6. The first part 2031, the second part 2032 and the third part 2033 are detachably connected in sequence. In the working state, the magnetic screw 203 extends along the first direction.

[0091] Specifically, in the retracted state, the first flap 5 and the second flap 6 are vertically retracted outside the freeze dryer body 1. The second part 2032 and the third part 2033 are separated from the first part 2031. The trolley 204, carrying two push plates, is located on the second flap 6. In the working state, the first flap 5 and the second flap 6 are unfolded into a horizontal position. At this time, the three parts of the magnetic screw 203 are connected in sequence, and the entire magnetic screw 203 extends along the first direction. When the motor drives the first part 2031 of the magnetic screw 203 to rotate, the second part 2032 connected to the first part 2031 and the third part 2033 connected to the second part 2032 will rotate synchronously, thereby driving the magnetic nut to move along the first direction through magnetic force, and thus driving the trolley 204 and the two push plates to move synchronously to achieve material pushing. The three parts of the magnetic screw 203 can be detachably installed by plugging them together, for example, by connecting them through a structure similar to a plum blossom coupling; or, they can be connected by snap-fit.

[0092] In the above embodiment, the magnetic screw 203 is constructed as three detachably connected parts, which can adapt to the position changes of the two flaps between the working state and the storage state. In the working state, the magnetic screw 203 is connected to form a complete structure to realize the magnetic drive of the trolley 204. In the storage state, they are separated from each other, so that the second part 2032, the third part 2033 and the trolley 204 are stored outside the freeze dryer body 1 along with the two flaps.

[0093] Preferably, in some embodiments, two sets of trolleys 204, magnetic nuts, and magnetic screws 203 are provided and spaced apart along the second direction. A first push plate 2021 and a second push plate 2022 are rotatably connected between the two trolleys 204. By providing two sets of structures, the smoothness of the trolleys 204 operation can be improved, and the magnetic driving force is stronger.

[0094] In addition, the freeze dryer body 1 and the two flip plates are equipped with guide rails for moving and guiding the trolley 204. The guide rails are set in a similar way to the magnetic screw 203, and can also be connected in the working state to form a complete track extending along the first direction. In the storage state, they are separated, and some structures are stored with the flip plates.

[0095] See Figures 7 to 9 In some embodiments, the freeze dryer body 1 includes a housing 101 and a feed door 17. The housing 101 has a freeze drying chamber 1011 and a feed inlet 1012 communicating with the freeze drying chamber 1011. The feed door 17 can move relative to the housing 101 to block or open the feed inlet 1012. The feed door 17 is provided with an internal flow channel 1701 for the flow of medium.

[0096] In the above embodiments, the feed door 17 can move relative to the housing 101 to open and close the feed inlet 1012, adapting to different working conditions of the freeze dryer for feeding, unloading, and sealing during freeze drying. The design of the flow channel 1701 inside the door allows for temperature control of the feed door 17 through the flow of the medium, ensuring that the temperature of the feed door 17 matches the working conditions inside the freeze drying chamber 1011. This avoids problems such as frost and condensation caused by temperature differences, ensuring the temperature stability inside the freeze drying chamber 1011 and improving the reliability of the freeze drying process. At the same time, the temperature-controlled feed door 17 can reduce heat exchange between the inside and outside of the chamber, reduce energy consumption, and optimize the energy efficiency of freeze drying production.

[0097] Specifically, the feed door 17 is rotatably connected to the housing 101, and the feed door 17 is opened or closed by rotating. Of course, in other embodiments, the feed door 17 can also be designed to be slidably connected to the housing 101, and can be opened or closed by sliding up and down.

[0098] Furthermore, during the loading and unloading stage, the feed door 17 rotates and opens relative to the housing 101, exposing the feed inlet 1012, which facilitates the material entering and exiting the freeze-drying chamber 1011 via the transition platform. During the freeze-drying stage, the feed door 17 rotates and closes to seal the feed inlet 1012, preventing external interference with the vacuum and temperature environment inside the freeze-drying chamber 1011. At this time, a medium with a suitable temperature is introduced into the flow channel 1701 inside the door, keeping the feed door 17 at a temperature close to that inside the freeze-drying chamber 1011. This avoids frost formation caused by contact between the inner wall of the low-temperature chamber and the room-temperature door panel, and also reduces heat loss. This ensures the stable operation of the freeze-drying process and improves the energy efficiency of the equipment.

[0099] See Figure 8 In some embodiments, the housing 101 is provided with a feed gate shaft 28 rotatably connected thereto, and the feed gate 17 is fixedly connected to the feed gate shaft 28. The feed gate shaft 28 can realize the communication between the flow channel 1701 inside the gate and the external heat exchange medium during rotation.

[0100] Specifically, a heat exchange medium at a suitable temperature flows into the inner flow channel 1701 through the structure on the feed gate shaft 28, exchanging heat with the feed gate 17 to achieve temperature control of the feed gate 17 and match the temperature of the feed gate 17 with the operating conditions inside the freeze-drying chamber 1011. After heat exchange in the inner flow channel 1701, the heat exchange medium flows out through the structure on the feed gate shaft 28 again to exchange heat with the external heat exchanger, thus completing one heat cycle. By continuously circulating the heat exchange medium in the above manner, continuous temperature control of the feed gate 17 can be achieved.

[0101] In the above embodiments, the feed gate pivot 28 not only enables the installation of the feed gate 17, allowing the feed gate 17 to rotate relative to the housing 101 and realize the opening and closing of the feed inlet 1012, but also serves as an intermediary between the external heat exchange medium and the flow channel 1701 inside the gate. This allows the heat exchange medium to flow in and out of the feed gate 17 during rotation, thereby enabling the heat exchange medium to be introduced into the flow channel 1701 inside the gate for temperature control in advance during the closing of the feed inlet 1012. In this way, the temperature of the feed gate 17 can reach the required level as soon as possible, thereby shortening the waiting time after the feed inlet 1012 is closed and starting freeze drying as soon as possible.

[0102] Furthermore, in some embodiments, the feed gate shaft 28 is provided with an independent inflow section 2801 and an outflow section 2802. The liquid inlet of the flow channel 1701 inside the gate and the inflow section 2801 are connected through the liquid inlet pipe 29, and the liquid outlet of the flow channel 1701 inside the gate and the outflow section 2802 are connected through the liquid outlet pipe 30.

[0103] Specifically, a swing arm 27 is fixedly connected to the feed door shaft 28, the feed door 17 is fixedly connected to the swing arm 27, and a door drive assembly 31 is also fixedly installed on the housing 101. The power output end of the door drive assembly 31 is connected to the feed door shaft 28 to drive the feed door shaft 28 to rotate, thereby driving the feed door 17 to rotate.

[0104] The inflow section 2801 and the outflow section 2802 are spaced apart, for example, symmetrically arranged at both ends of the feed gate shaft 28. Both the inlet pipe 29 and the outlet pipe 30 are flexible hoses, such as corrugated metal pipes or high-temperature resistant silicone tubing. The heat exchange medium flowing out of the heat exchanger enters the inner flow channel 1701 of the gate through the inflow section 2801 and the inlet pipe 29 of the feed gate shaft 28, completes heat exchange with the feed gate 17, and then flows out through the outlet pipe 30 and the outflow section 2802 of the feed gate shaft 28, and flows through the heat exchanger again for heat exchange, forming a closed-loop medium circulation path. The directional transport of the medium is achieved through the built-in flow channel structure of the feed gate shaft 28, ensuring that the feed gate 17 can be rotated while ensuring the inflow and outflow of the heat exchange medium during rotation. This allows for smoother flow of the temperature-controlled medium within the inner flow channel 1701, further improving the temperature control uniformity and heat insulation sealing effect of the feed gate 17.

[0105] Preferably, the end face of the feed door 17 is provided with a sealing ring. During the freeze-drying stage, the feed door 17 rotates to close, and the sealing ring is pressed between the feed door 17 and the door frame to improve the sealing performance at this point.

[0106] See Figure 8 In some embodiments, the flow channel 1701 inside the door includes a plurality of flow sections connected in sequence, and the extension directions of any adjacent flow sections are arranged at an angle.

[0107] This configuration extends the flow path of the heat exchange medium inside the feed gate 17, increases the contact area and contact time between the medium and the feed gate 17 panel, allows for more complete heat transfer of the heat exchange medium, makes the temperature of each area of ​​the feed gate 17 more uniform, and further optimizes the temperature control and insulation effect.

[0108] For example, in some embodiments, the flow channel 1701 inside the door is arranged in a coil, serpentine, or annular shape, preferably a spiral coil structure. In the embodiment shown in the accompanying drawings, the flow channel 1701 inside the door is serpentine, and the included angle between the extension directions of adjacent flow sections is 90 degrees. Of course, in other embodiments, this included angle can also be an acute angle or an obtuse angle.

[0109] See Figures 8 to 9 In some embodiments, the freeze dryer body 1 includes a door lock assembly 102, which includes a driver 1021 mounted on the housing 101 and a locking pin 1022 connected to the driver 1021. When the feed door 17 blocks the feed inlet 1012, the driver 1021 can drive the locking pin 1022 to move to lock the feed door 17.

[0110] In the above embodiments, the feed door 17 is locked by driving the locking pin 1022 to move through the driver 1021. During the freeze-drying stage, the feed door 17 can be tightly pressed against the door frame, further improving the sealing effect of the feed inlet 1012 and preventing the temperature environment inside the freeze-drying chamber 1011 from leaking due to the loose door, thus ensuring the stable operation of the freeze-drying process. In addition, the automated locking structure does not require manual operation, which can improve the convenience and reliability of equipment operation.

[0111] Specifically, when the feed door 17 rotates to close and seal the feed inlet 1012, the relevant sensor receives the signal, and the driver 1021 drives the locking pin 1022 to extend and engage / press against the corresponding mating position of the feed door 17, firmly locking the feed door 17 and keeping the sealing ring between the door body and the door frame in a stable compressed state, eliminating the sealing gap; when it is necessary to open the feed door 17 for feeding or discharging, the driver 1021 drives the locking pin 1022 to reset and retract, releasing the lock on the feed door 17 without interfering with the normal opening and closing action of the door body.

[0112] Furthermore, the door lock assembly 102 also includes a lock frame 1023, which is fixedly installed on the housing 101. The driver 1021 is fixedly installed on the lock frame 1023. The lock frame 1023 provides a stable mounting and support base for the driver 1021 and the locking pin 1022, ensuring the stability of the locking action.

[0113] In some embodiments, the locking pin 1022 has a first inclined surface at one end facing the feed door 17, and the feed door 17 has a second inclined surface adapted to the first inclined surface at a corresponding position. The driver 1021 drives the locking pin 1022 to move linearly in a direction perpendicular to the pressing direction of the feed door 17 (the locking pin 1022 moves towards the feed door 17 in the second direction; the pressing direction of the feed door 17 is parallel to the first direction and faces away from the conveying mechanism 18). Through the mutual pushing of the two inclined surfaces, the horizontal thrust of the locking pin 1022 parallel to the feed door 17 is converted into a pressure that presses the feed door 17 vertically, so that the feed door 17 is tightly pressed against the door frame, further improving the sealing effect. Of course, in other embodiments, locking methods such as locking pins being inserted into the feed door slot or locking pins pressing against the door body limiting boss can also be used, as long as the feed door 17 can be firmly locked and sealed.

[0114] See Figures 5 to 7 In some embodiments, the freeze dryer body 1 has a freeze drying chamber 1011, which is provided with a plurality of movable plates 16 arranged in a vertical direction. The movable plates 16 can move in a vertical direction to dock with the transition platform.

[0115] In the above embodiments, multiple movable plates 16 are arranged vertically inside the freeze-drying chamber 1011, and the movable plates 16 can be moved vertically to dock with the transition platform, which can realize the simultaneous freeze-drying of multiple layers of materials in the freeze dryer body 1, greatly improving the material carrying capacity and production efficiency of a single batch of freeze-drying; at the same time, the movable design of the movable plates 16 can accurately match the height of the transition platform, ensuring seamless docking of each layer of movable plates 16 with the transition platform, so that there is no drop or jamming during the material transfer process, ensuring the stability and continuity of multi-layer loading and unloading operations.

[0116] Specifically, during feeding, the moving plate 16 can be controlled to move vertically to the height of docking with the transition platform, and the feeding mechanism 2 will push the material onto each moving plate 16 one by one to complete the continuous feeding of multiple layers of material; during unloading, the freeze-dried moving plate 16 will also move to the docking height in sequence, and the material will be pushed to the conveying mechanism 18 through the transition platform to realize the orderly discharge of multiple layers of material.

[0117] Furthermore, a moving plate drive unit can be installed inside the freeze-drying chamber 1011, which can drive multiple moving plates 16 to move vertically via a synchronous belt structure. For example, multiple moving plates 16 can be fixed to the synchronous belt in the synchronous belt structure, so that when the synchronous belt moves, it can drive multiple moving plates 16 to move up and down synchronously.

[0118] See Figure 1 , Figure 3 ,as well as Figures 5 to 7 One embodiment of this application provides a control method for controlling the operation of the aforementioned transition mechanism, the control method comprising:

[0119] S100. When switching from the working state to the storage state, the control platform 22 moves away from the freeze dryer body 1, and the entire flipping assembly rotates away from the freeze dryer body 1.

[0120] S200, control the second flap 6 to rotate downward relative to the platform 22, the first flap 5 to rotate downward relative to the second flap 6, and the included angle between the first flap 5 and the second flap 6 gradually decreases;

[0121] S300, control the second flap 6 to rotate upward relative to the platform 22, the first flap 5 to continue rotating downward relative to the second flap 6, and the included angle between the first flap 5 and the second flap 6 to continue to decrease;

[0122] S400, the second flap 6 stops rotating after rotating to the vertical position; control the first flap 5 to rotate upward relative to the second flap 6 until the first flap 5 rotates to the vertical position.

[0123] Specifically, in step S100, the platform 22 is first controlled to move away from the freeze dryer body 1 along the first direction to avoid obstacles, and then the rotating arm 23 in the flipping assembly is controlled to rotate upward around the platform 22 along with the two flip plates. Alternatively, the movement of the platform 22 and the rotation of the rotating arm 23 can be performed simultaneously.

[0124] In step S200, the second flap 6 is controlled to rotate downward relative to the rotating arm 23, and the first flap 5 rotates downward relative to the second flap 6. During this process, the included angle between the first flap 5 and the second flap 6 gradually decreases to avoid the feed door 17, feed inlet 1012, and other structures of the freeze dryer body 1. The rotation of the second flap 6 and the rotation of the first flap 5 can be performed sequentially or simultaneously.

[0125] In step S300, the second flap 6 is controlled to rotate upward relative to the rotating arm 23, while the first flap 5 continues to rotate downward relative to the second flap 6. The included angle between the first flap 5 and the second flap 6 continues to decrease, so as to continue to avoid the feed door 17, feed inlet 1012, and other structures of the freeze dryer body 1. The rotation of the second flap 6 and the rotation of the first flap 5 can be performed sequentially or simultaneously.

[0126] When the second flap 6 rotates upward relative to the rotating arm 23 to a vertical position, the second flap 6 stops rotating and remains stationary in that position. Proceed to step S400. At this time, the first flap 5 is already far away from the freeze dryer body 1 and will not collide with the freeze dryer body 1. Therefore, control the first flap 5 to rotate directly upward relative to the second flap 6. Stop rotating when the first flap 5 is also in a vertical position. At this time, both flaps are vertically standing above the platform 22 and are in a retracted state.

[0127] Of course, in addition to the above-mentioned motion coordination forms, in other embodiments, the rotating arm 23 and the two flaps in the transition mechanism can also avoid the freeze dryer body 1 during state switching through other motion coordination forms (e.g., changes in the order of component movement, changes in the distance of movement or the angle of rotation, etc.).

[0128] In summary, in this embodiment, the transition mechanism achieves dual optimization of docking adaptability and avoidance flexibility by combining the translational adjustment of the platform 22 with the multi-dimensional rotation of the flipping component. During docking, the platform 22 can slide along the first direction, cooperating with the multi-stage rotation of the rotating arm 23, the first flip plate 5, and the second flip plate 6 to achieve seamless and precise alignment between the transition platform and the freeze dryer body 1 and the conveying mechanism 18, significantly improving docking stability and material transfer smoothness. When avoidance is required, on the one hand, when the multi-layer moving plate 16 is vertically raised and lowered for docking, the platform 22 can translate backward along the first direction to directly avoid the movement path of the moving plate 16, avoiding interference; on the other hand, when the feed door 17 needs to be closed to start the freeze-drying process, the platform 22 can move backward to an avoidance position, simultaneously cooperating with the multi-stage rotation of the rotating arm 23, the first flip plate 5, and the second flip plate 6 to switch to a storage state, avoiding the feed door 17, feed inlet 1012, and other structures of the freeze dryer body 1, without affecting door closure and cavity sealing. Overall, the coordinated operation of translational adjustment and multi-level rotation ensures precise fit during docking and achieves efficient avoidance under various working conditions, making the transition mechanism more flexible and adaptable.

[0129] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A transition mechanism applied to a freeze dryer, the freeze dryer comprising a freeze dryer body and a conveying mechanism, characterized in that, The transition mechanism includes: support; A platform, slidably fitted to the support along a first direction, the first direction being parallel to the material feeding and discharging direction of the freeze dryer body; and A flipping assembly is rotatably fitted to the platform; the flipping assembly includes a first flip plate and a second flip plate that are rotatably connected. In the working state, the first flip plate and the second flip plate form a transition platform for bridging the freeze dryer body and the conveying mechanism.

2. The transition mechanism according to claim 1, characterized in that, The flipping assembly includes a rotating arm, one end of the second flip plate is rotatably connected to the first flip plate, and the other end is rotatably connected to the rotating arm. The end of the rotating arm away from the second flip plate is rotatably connected to the platform.

3. The transition mechanism according to claim 2, characterized in that, The flipping component includes: The first drive module is installed inside the platform and connected to the rotating arm to drive the rotating arm to rotate relative to the platform. The second drive module is installed inside the second flap and connected to the rotating arm to drive the second flap to rotate relative to the rotating arm; The third drive module is installed inside the second flap and connected to the first flap to drive the first flap to rotate relative to the second flap.

4. The transition mechanism according to claim 3, characterized in that, The first drive module includes a first rotating shaft rotatably connected to the platform, and the second drive module includes a second rotating shaft rotatably connected to the second flip plate. The first rotating shaft and the second rotating shaft are respectively fixed to both ends of the rotating arm. The second rotating shaft, the rotating arm and the first rotating shaft are hollow inside and interconnected at the connection point.

5. The transition mechanism according to any one of claims 2 to 4, characterized in that, In the working state, the first flap and the second flap are horizontally arranged; in the storage state, the first flap and the second flap are vertically arranged, and the rotating arm has a clearance groove on the side facing the conveying mechanism for avoiding the conveying mechanism.

6. The transition mechanism according to claim 5, characterized in that, The rotating arm includes a first section, a second section, and a third section connected in sequence. The end of the first section away from the second section is rotatably connected to the platform, and the end of the third section away from the second section is rotatably connected to the second flap. In the stored state, the first segment is positioned from the platform toward the side closer to the freeze dryer body, the two ends of the second segment are respectively connected to the first segment and the third segment, and the first segment and the third segment are located on the side of the second segment away from the freeze dryer body, and the first segment, the second segment and the third segment form the clearance groove.

7. The transition mechanism according to any one of claims 1 to 4, characterized in that, The second flap has a docking portion at the end away from the first flap. In the working state, the docking portion is used to insert and cooperate with the conveying mechanism. The platform can slide along the first direction to adjust the insertion depth of the docking portion.

8. The transition mechanism according to any one of claims 1 to 4, characterized in that, The end of the first flap away from the second flap has a first snap-fit ​​portion, which is used to insert and / or snap-fit ​​with the moving plate of the freeze dryer body.

9. A freeze dryer, characterized in that, The freeze dryer includes a transition mechanism as described in any one of claims 1 to 8, and further includes a feeding mechanism, the freeze dryer body and the conveying mechanism. The feeding mechanism is capable of pushing the material on the conveying mechanism into the freeze dryer body via the transition platform during loading, and pushing the material in the freeze dryer body to the conveying mechanism via the transition platform during unloading.

10. The freeze dryer according to claim 9, characterized in that, The freeze dryer body includes a housing and a feed door. The housing has a freeze-drying chamber and a feed inlet connected to the freeze-drying chamber. The feed door can move relative to the housing to block or open the feed inlet. The feed door has an internal flow channel for the flow of medium.

11. The freeze dryer according to claim 10, characterized in that, The flow channel inside the door includes multiple flow sections connected in sequence, and the extension directions of any adjacent flow sections are arranged at an angle.

12. The freeze dryer according to claim 10, characterized in that, The housing is provided with a feed gate shaft that is rotatably connected to it. The feed gate is fixedly connected to the feed gate shaft, and the feed gate shaft can realize the communication between the flow channel inside the gate and the external heat exchange medium during rotation.

13. The freeze dryer according to claim 12, characterized in that, The feed gate shaft has independent inflow and outflow sections. The inlet of the flow channel inside the gate and the inflow section are connected by an inlet pipe, and the outlet of the flow channel inside the gate and the outflow section are connected by an outlet pipe.

14. The freeze dryer according to claim 10, characterized in that, The freeze dryer body includes a door lock assembly, which includes a driver installed on the housing and a locking pin connected to the driver. When the feed door blocks the feed inlet, the driver can drive the locking pin to move to lock the feed door.

15. The freeze dryer according to claim 9, characterized in that, The freeze dryer body has a freeze drying chamber, which is provided with multiple movable plates arranged in a vertical direction. The movable plates can move in the vertical direction to dock with the transition platform.

16. The freeze dryer according to claim 9, characterized in that, The feeding mechanism includes a material feeding pusher plate and a loading and unloading pusher plate assembly; the material feeding pusher plate is disposed on the side of the conveying mechanism opposite to the transition platform and is used to push the material on the conveying mechanism to the transition platform during feeding; the loading and unloading pusher plate assembly is configured to move along the first direction under magnetic force to push the material arriving at the transition platform into the freeze dryer body during feeding and enter the freeze dryer body during unloading, pushing the material in the freeze dryer body to the conveying mechanism via the transition platform.

17. The freeze dryer according to claim 16, characterized in that, The loading and unloading pusher assembly includes a first pusher and a second pusher arranged along the first direction. The first pusher and the second pusher are configured to retract and lower the pusher by rotating.

18. The freeze dryer according to claim 17, characterized in that, The feeding mechanism includes a magnetic screw, a magnetic nut, and a trolley. The magnetic nut is mounted on the trolley. The first push plate and the second push plate are rotatably connected to the trolley. The rotating magnetic screw drives the magnetic nut to move along the first direction by magnetic force.

19. The freeze dryer according to claim 18, characterized in that, The magnetic screw includes a first part installed inside the freeze dryer body, a second part installed on the first flap, and a third part installed on the second flap. The first part, the second part, and the third part are detachably connected in sequence. In the working state, the magnetic screw extends along the first direction.

20. A control method for a transition mechanism, used to control the operation of the transition mechanism according to any one of claims 1 to 8, characterized in that, The control method includes: When switching from the working state to the storage state, the platform is controlled to move away from the main body of the freeze dryer, and the entire flipping assembly rotates away from the main body of the freeze dryer. The second flap is controlled to rotate downward relative to the platform, and the first flap rotates downward relative to the second flap, with the included angle between the first flap and the second flap gradually decreasing; The second flap is controlled to rotate upward relative to the platform, while the first flap continues to rotate downward relative to the second flap, and the included angle between the first flap and the second flap continues to decrease; The second flap stops rotating after it reaches a vertical position; the first flap is controlled to rotate upward relative to the second flap until the first flap reaches a vertical position.

Images