Freeze-drying equipment for preparing freeze-dried facial mask

Abstract

The present invention discloses a freeze-drying device for preparing freeze-dried facial masks, relating to the field of freeze-dried facial mask preparation. The device comprises a base plate and a top plate. A film-spreading and liquid-injection device, a fixed-point liquid-replenishing device, and a vacuum drying device are sequentially provided at the bottom of the top plate. A circulating transmission device is provided on the base plate for sequentially transferring facial masks to the film-spreading and liquid-injection device, the fixed-point liquid-replenishing device, and the vacuum drying device. The vacuum drying device comprises a turntable located below the top plate, a stepping motor provided on the top plate for driving the turntable, a plurality of telescopic cylinders arranged in an annular array on the turntable with their actuating ends extending through the turntable, a freeze-drying hood provided at the actuating ends of the telescopic cylinders, an auxiliary heating component and a magnetic sealing component sequentially provided on the inner wall of the freeze-drying hood from top to bottom, and a vacuum component provided at the bottom of the turntable with its exhaust end connected to the plurality of freeze-drying hoods. The present invention provides freeze-drying equipment that facilitates the streamlined and rapid production of freeze-dried facial masks.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of freeze-dried facial mask preparation, and specifically relates to a freeze-drying device for preparing freeze-dried facial mask. Background Art

[0002] A freeze-dried mask is a mask that is made by fusing mask essence, moisturizers and other ingredients with the membrane cloth fibers, using vacuum freeze-drying to sublimate the moisture to form a solid dry film. The storage of freeze-dried masks does not require the addition of thickeners and preservatives, and is therefore safer.

[0003] According to the vacuum freeze-drying device for processing freeze-dried facial masks provided by the patent document with application number CN202011547627.0, the product includes a rotary vane pump, which is connected to the pressure differential valve through a pipeline, the pressure differential valve is connected to the water vapor condenser through a pipeline, the water vapor condenser is connected to the butterfly valve, the butterfly valve is connected to the freeze drying chamber, and an air release valve is installed on the pipeline between the freeze drying chamber and the butterfly valve, the refrigeration compressor unit is connected to the water vapor condenser, the water vapor condenser is connected to the freeze drying chamber through a pipeline, the first vacuum gauge is installed on the freeze drying chamber, the freeze drying chamber is installed on the machine base, the freeze drying chamber is connected to the expansion valve through a pipeline, the expansion valve is connected to the solenoid valve through a pipeline, the solenoid valve is connected to the water vapor condenser through a pipeline, and a second vacuum gauge and a diaphragm valve are installed on the water vapor condenser. The product in the above patent has a compact structure, convenient and reliable operation, adopts a direct cooling and direct heating structure, eliminates the need for a heat exchanger, reduces heat loss, saves energy, and uses a water vapor condenser to capture water vapor for drying, and has a good sealing effect.

[0004] The product in the above patent has a compact structure, is easy to operate, and uses a water vapor condenser to capture water vapor for drying, but it is not convenient for the rapid process production of freeze-dried masks and is not convenient for small-space, low-energy freeze-drying of masks. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a freeze-drying device for preparing freeze-dried facial masks to solve the technical problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: A freeze-drying device for preparing freeze-dried facial masks, comprising a base plate and a top plate whose bottom is connected to the upper surface of the base plate via a plurality of support columns, wherein a film spreading and liquid injection device, a fixed-point liquid replenishing device, and a vacuum drying device are sequentially provided at the bottom of the top plate, and a circulating transmission device is provided on the base plate, wherein the circulating transmission device is used to sequentially transfer the facial mask to the film spreading and liquid injection device, the fixed-point liquid replenishing device, and the vacuum drying device;

[0007] The circulating transmission device includes an assembly line conveyor belt provided on a base plate, a plurality of positioning racks provided on the side walls of the assembly line conveyor belt, a facial mask placement box located in the positioning racks, a refrigeration component embedded in the facial mask placement box, and a facial mask top component embedded in the facial mask placement box with an execution end passing through the refrigeration component and extending to the upper surface of the facial mask placement box;

[0008] The vacuum drying device includes a turntable located at the bottom of the top plate, a stepping motor provided on the top plate and used to drive the turntable to rotate, a plurality of telescopic cylinders arranged in a circular array on the turntable and with the execution ends passing through the turntable, a freeze-drying cover provided at the execution ends of the telescopic cylinders, an auxiliary heating component and a magnetic sealing component provided on the inner wall of the freeze-drying cover in sequence from top to bottom, and a vacuum component provided at the bottom of the turntable and with the exhaust end connected to the plurality of freeze-drying covers.

[0009] Preferably, the magnetic sealing component includes a first electromagnetic ring disposed on the inner wall of the freeze-drying cover, an elastic sealing ring disposed on top of the first electromagnetic ring, and a plurality of iron plates disposed in an annular array on top of the elastic sealing ring. In this preferred embodiment, the magnetic sealing component can achieve a stable connection and seal between the mask storage box and the freeze-drying cover.

[0010] Preferably, the auxiliary heating component includes a cross plate mounted on the inner wall of the freeze-drying cover, a circular heating plate located at the center of the cross plate, and a heating ring mounted on the cross plate and sleeved around the circular heating plate. In this preferred embodiment, the auxiliary heating component facilitates providing heat to the frozen mask during the vacuum drying process, thereby facilitating the direct sublimation of ice into gaseous water.

[0011] Preferably, the vacuum component includes an exhaust ring disposed at the bottom of the turntable, an exhaust pipe disposed at the bottom of the turntable and connected to the exhaust ring at both ends, an exhaust port disposed at the bottom of the exhaust pipe, a suction pipe having one end rotatably connected to the exhaust port, an annular array of electrically controlled valves disposed at the bottom of the exhaust ring and connected to the exhaust ring, and a foldable tube having one end connected to the electrically controlled valves and the other end connected to the freeze-drying cover. In this preferred embodiment, the vacuum component facilitates simultaneous vacuum extraction of multiple freeze-drying covers.

[0012] Preferably, the film spreading and liquid injection device includes a first drive cylinder disposed at the bottom of the top plate, a base box disposed at the actuating end of the first drive cylinder, a liquid injection ring located within the base box, a liquid source tube having one end connected to the liquid injection ring and the other end penetrating the base box and extending to the upper portion of the base box, a plurality of liquid injection tubes having one end connected to the bottom of the liquid injection ring and the other end connected to the bottom of the base box, and a plurality of film spreading components disposed in an annular array at the bottom of the inner wall of the base box, with the actuating ends penetrating the bottom of the inner wall of the base box and extending to the lower portion of the base box. In this preferred embodiment, the film spreading and liquid injection device facilitates the spreading of the facial mask and the addition of mask liquid.

[0013] Preferably, the film spreading component includes a through-hole formed in the bottom inner wall of the base box, a plurality of micro-electric cylinders disposed in the bottom inner wall of the base box, and a toggle lever disposed at the actuating end of the micro-electric cylinders, one end of which extends through the through-hole to the exterior of the base box. In this preferred embodiment, the film spreading component is used to spread the facial mask, thereby preventing wrinkles in the mask from affecting its ability to absorb the mask liquid.

[0014] Preferably, the fixed-point rehydration device includes a second drive cylinder disposed at the bottom of the top plate, a positioning plate horizontally disposed at the actuating end of the second drive cylinder, a micromotor disposed on the actuating plate with its actuating end extending through the actuating plate and to the bottom of the actuating plate, a circular mounting cover disposed at the actuating end of the micromotor, a linear module disposed within the circular mounting cover, and a rehydration tube disposed at the actuating end of the linear module. In this preferred embodiment, the fixed-point rehydration device facilitates secondary addition of the mask solution, thereby facilitating control of the active ingredient content at different locations on the freeze-dried mask.

[0015] Preferably, the refrigeration component includes a plurality of semiconductor refrigeration rings embedded in the mask placement box, and the plurality of semiconductor refrigeration rings are radially distributed. In this preferred embodiment, the mask liquid is frozen by the refrigeration component.

[0016] Preferably, the mask top component includes a lifting chamber embedded in the mask placement box and located below the semiconductor refrigeration ring, a lifting plate disposed in the lifting chamber, a micro-power cylinder embedded in the mask placement box and used to drive the lifting plate up and down, and a plurality of top posts disposed on the upper surface of the driving lifting plate and extending to the upper surface of the mask placement box. In this preferred embodiment, the mask is lifted up by the mask top component, which facilitates the mask to absorb the mask liquid, facilitates the mask to fully contact with air during freeze-drying, and facilitates the discharge of sublimated gaseous water.

[0017] Preferably, the bottom of the facial mask placement box is funnel-shaped, and the side wall of the facial mask placement box is sleeved with a second electromagnetic ring. In this preferred embodiment, the second electromagnetic ring facilitates the intelligent connection or separation between the facial mask placement box and the positioning frame.

[0018] In summary, the present invention mainly has the following beneficial effects:

[0019] The device of the present invention facilitates the rapid and streamlined production of freeze-dried facial masks, facilitates the control of the distribution of the effective ingredients of the freeze-dried facial masks on the facial masks, and facilitates the freeze-drying of the facial masks in a small space and with low energy consumption.

[0020] The circular transmission device can sequentially transmit the facial mask to the film spreading and liquid injection device, the fixed-point liquid replenishing device and the vacuum drying device;

[0021] In the circulation transmission device, a plurality of positioning racks are circulated and transmitted through an assembly line conveyor belt. A second electromagnetic ring facilitates the intelligent connection or separation between the mask placement box and the positioning rack. The mask liquid is frozen by a refrigeration component, and the mask is lifted up by a mask lifting component, which facilitates the mask to absorb the mask liquid, facilitates the mask to fully contact with air during freeze-drying, and facilitates the discharge of sublimated gaseous water.

[0022] The mask spreading and liquid injection device facilitates the spreading of the mask while adding the mask liquid. The mask spreading is achieved by the mask spreading component to prevent the mask wrinkles from affecting the effect of the mask absorbing the mask liquid.

[0023] The fixed-point rehydration device facilitates secondary addition of mask liquid, so as to control the content of active ingredients at different positions on the freeze-dried mask;

[0024] In the vacuum drying device, a magnetic sealing component can achieve a stable connection and seal between the mask placement box and the freeze-drying cover. The auxiliary heating component can provide heat to the frozen mask during the vacuum drying process, so that the ice can directly sublime into gaseous water. The vacuum component can facilitate vacuum suction of multiple freeze-drying covers at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric view of the overall structure of the present invention.

[0026] Figure 2 It is an exploded view of the overall structure of the present invention.

[0027] Figure 3 This is an exploded view of the membrane spreading and liquid injection device structure of the present invention.

[0028] Figure 4 This is an exploded view of the fixed-point fluid infusion device structure of the present invention.

[0029] Figure 5 It is an exploded diagram of the vacuum drying device structure of the present invention.

[0030] Figure 6 It is an exploded view of the structure of the circulating transmission device of the present invention.

[0031] Figure 7 It is a cross-sectional view of the overall structure of the present invention.

[0032] Figure 8 It is a cross-sectional view of the structure of the vacuum drying device of the present invention.

[0033] Figure 9 It is an enlarged view of the structure at point A of the present invention.

[0034] Figure 10 It is an enlarged view of the structure at location B of the present invention.

[0035] Description of the drawings: 10, base plate; 11, top plate; 20, film spreading and liquid injection device; 21, first driving cylinder; 22, base box; 23, liquid injection ring; 24, liquid source pipe; 25, liquid injection pipe; 26, film spreading component; 261, through hole; 262, micro electric cylinder; 263, toggle rod; 30, fixed-point liquid injection device; 31, second driving cylinder; 32, positioning plate; 33, micro motor; 34, circular mounting cover; 35, linear module; 36, liquid injection pipe; 40, vacuum drying device; 41, turntable; 42, stepping motor; 43, telescopic cylinder; 44, freeze-drying cover; 45, auxiliary heating component; 451, cross plate; 452, Circular heating plate; 453, heating ring; 46, magnetic sealing component; 461, first electromagnetic ring; 462, elastic sealing ring; 463, iron sheet; 47, vacuum component; 471, exhaust ring; 472, exhaust pipe; 473, exhaust port; 474, suction pipe; 475, electric control valve; 476, folding tube; 50, circulating transmission device; 51, assembly line conveyor belt; 52, positioning frame; 53, facial mask placement box; 531, second electromagnetic ring; 54, refrigeration component; 541, semiconductor refrigeration ring; 55, facial mask top component; 551, lifting chamber; 552, lifting plate; 553, micro power cylinder; 554, top column. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0037] The following describes an embodiment of the present invention based on its overall structure. Example

[0038] Please refer to the attached Figure 1 、 2As shown in Figures 6, 7, and 10, in a preferred embodiment of the present invention, a freeze-drying device for preparing a freeze-dried facial mask comprises a base plate 10, and a top plate 11 whose bottom is connected to the upper surface of the base plate 10 by a plurality of support columns, a film spreading and liquid injection device 20, a fixed-point liquid replenishing device 30, and a vacuum drying device 40 are sequentially arranged at the bottom of the top plate 11, a circulating transmission device 50 is provided on the base plate 10, and the circulating transmission device 50 is used to transfer the facial mask to the film spreading and liquid injection device 20, the fixed-point liquid replenishing device 30, and the vacuum drying device 40 in sequence; the circulating transmission device 50 comprises an assembly line conveyor belt 51 provided on the base plate 10, a plurality of positioning racks 52 provided on the side walls of the assembly line conveyor belt 51, a facial mask placement box 53 located in the positioning rack 52, a refrigeration component 54 embedded in the facial mask placement box 53, and a refrigeration component 55 embedded in the facial mask placement box 5 3 and the execution end passes through the refrigeration component 54 and extends to the upper surface of the mask placement box 53; the refrigeration component 54 includes a plurality of semiconductor refrigeration rings 541 embedded in the mask placement box 53, and the plurality of semiconductor refrigeration rings 541 are radially distributed, and the mask top component 55 includes a lifting cavity 551 embedded in the mask placement box 53 and located below the semiconductor refrigeration ring 541, a lifting plate 552 provided in the lifting cavity 551, a micro-power cylinder 553 embedded in the mask placement box 53 and used to drive the lifting plate 552 to rise and fall, and a plurality of top columns 554 provided on the upper surface of the driving lifting plate 552 and with the top extending to the upper surface of the mask placement box 53, the bottom of the mask placement box 53 is funnel-shaped, and the side wall of the mask placement box 53 is sleeved with a second electromagnetic ring 531.

[0039] It should be noted that, in this preferred embodiment, the circulating transmission device 50 can sequentially transmit the facial mask to the film spreading and liquid injection device 20, the fixed-point liquid replenishing device 30, and the vacuum drying device 40. The station before the film spreading and liquid injection device 20 can be provided with an automatic facial mask loading device to load the facial mask sheet into the facial mask placement box 53. A packaging station can be provided after the vacuum drying device 40 to package the freeze-dried facial mask. A cleaning station can also be provided after the packaging station to clean the facial mask placement box 53.

[0040] When the circulating transmission device 50 is working, the assembly line conveyor belt 51 drives the multiple positioning racks 52 to move, and the positioning racks 52 drive the facial mask placement box 53 to move, so as to move the facial mask placement box 53 to each processing station. When the facial mask placement box 53 reaches the bottom of the film spreading and liquid injection device 20, the film spreading and liquid injection device 20 stretches the facial mask in the facial mask placement box 53 and adds facial mask liquid to prevent the facial mask wrinkles from affecting the effect of the facial mask absorbing the facial mask liquid. At this time, the top component 55 on the facial mask lifts up the facial mask to facilitate the facial mask sheet to absorb the facial mask liquid. The refrigeration component 54 is turned on to freeze the facial mask sheet that has absorbed the facial mask liquid.

[0041] When the mask placement box 53 reaches the bottom of the fixed-point rehydration device 30, the fixed-point rehydration device 30 performs secondary rehydration at the set rehydration position on the mask sheet, and the mask liquid after rehydration is directly frozen under the action of the refrigeration component 54;

[0042] When the mask placement box 53 reaches the bottom of the vacuum drying device 40, the second electromagnetic ring 531 on the side wall of the mask placement box 53 is powered off, and the vacuum drying device 40 magnetically sucks the mask placement box 53 out of the positioning frame 52 to freeze-dry the frozen mask sheets in the mask placement box 53. At the same time, the mask placement box 53 containing the freeze-dried mask sheets is placed in the positioning frame 52. The funnel-shaped bottom of the mask placement box 53 facilitates the placement of the mask placement box 53 in the positioning frame 52. The second electromagnetic ring 531 electromagnetically attracts the positioning frame 52 to complete the fixation.

[0043] Furthermore, the assembly line conveyor belt 51 is composed of two rotating wheels, a conveyor belt and a motor. The motor drives one of the rotating wheels to rotate, the rotating wheel drives the conveyor belt to move, and the conveyor belt drives the positioning frame 52 to circulate and transmit;

[0044] Furthermore, when the refrigeration component 54 is working, the semiconductor refrigeration ring 541 is turned on, and multiple semiconductor refrigeration rings 541 work simultaneously to reduce the temperature. The multiple semiconductor refrigeration rings 541 are radially distributed, which has a good and uniform cooling effect.

[0045] Furthermore, when the top component 55 of the mask is working, the execution end of the micro-power cylinder 553 can drive the lifting plate 552 to rise and fall, and the lifting plate 552 drives the top column 554 to rise and fall. The micro-power cylinder 553 can be an electric cylinder. The mask placement box 53 can be set to have an energy storage module powered by the electric cylinder, and the positioning frame 52 can be set to have a wireless charging module to wirelessly charge the energy storage module.

[0046] Please refer to the attached Figure 2 、 5As shown in Figures 8 and 9, in another preferred embodiment of the present invention, the vacuum drying device 40 includes a turntable 41 located at the lower part of the top plate 11, a stepping motor 42 provided on the top plate 11 and used to drive the turntable 41 to rotate, a plurality of telescopic cylinders 43 arranged in an annular array on the turntable 41 and with the execution end passing through the turntable 41, a freeze-drying cover 44 provided at the execution end of the telescopic cylinder 43, an auxiliary heating component 45 and a magnetic sealing component 46 arranged on the inner wall of the freeze-drying cover 44 in sequence from top to bottom, and a vacuum component 47 provided at the bottom of the turntable 41 and with the exhaust end connected to the plurality of freeze-drying covers 44, the magnetic sealing component 46 includes a first electromagnetic ring 461 provided on the inner wall of the freeze-drying cover 44, an elastic sealing ring 462 provided on the top of the first electromagnetic ring 461, and an annular array provided on the elastic sealing ring 462. There are multiple iron sheets 463 on the top, the auxiliary heating component 45 includes a cross plate 451 provided on the inner wall of the freeze-drying cover 44, a circular heating plate 452 provided at the center of the cross plate 451, and a heating ring 453 provided on the cross plate 451 and sleeved on the outside of the circular heating plate 452. The vacuum component 47 includes an exhaust ring 471 provided at the bottom of the turntable 41, an exhaust pipe 472 provided at the bottom of the turntable 41 and connected to the exhaust ring 471 at both ends, an exhaust port 473 provided at the bottom of the exhaust pipe 472, a suction pipe 474 with one end rotatably connected to the exhaust port 473, an annular array of electric control valves 475 provided at the bottom of the exhaust ring 471 and connected to the exhaust ring 471, and a folding tube 476 with one end connected to the electric control valve 475 and the other end connected to the freeze-drying cover 44.

[0047] It should be noted that, in this preferred embodiment, when the vacuum drying device 40 is working, the execution end of the telescopic cylinder 43 drives the freeze-drying cover 44 to descend. When the freeze-drying cover 44 covers the outside of the mask placement box 53, the magnetic sealing component 46 magnetically fixes the mask placement box 53, and the telescopic cylinder 43 resets. At this time, the vacuum component 47 performs vacuum suction on the mask placement box 53 and the freeze-drying cover 44, and the auxiliary heating component 45 provides heat at a set time to assist the sublimation of ice into gaseous water. The stepping motor 42 can drive the turntable 41 to rotate, thereby driving the multiple freeze-drying covers 44 to adjust their positions, so that the vacuum drying device 40 can accept and release the mask placement box 53;

[0048] Furthermore, when the magnetic sealing component 46 is working, the first electromagnetic ring 461 electromagnetically attracts the outer wall of the mask placement box 53, and at the same time, the first electromagnetic ring 461 generates an attractive force on the iron sheet 463, and the iron sheet 463 squeezes the elastic sealing ring 462, so that the elastic sealing ring 462 can better seal the gap between the freeze-drying cover 44 and the mask placement box 53;

[0049] Furthermore, when the auxiliary heating component 45 is working, the circular heating plate 452 and the heating ring 453 are energized to generate heat;

[0050] Furthermore, when the vacuum component 47 is working, the suction pipe 474 can be connected to the negative pressure system, the electric control valve 475 is opened, and the air is extracted in sequence through the folding tube 476, the electric control valve 475, the exhaust ring 471, the exhaust pipe 472, the exhaust port 473, and the suction pipe 474.

[0051] Please refer to the attached Figure 2 、 3 As shown in Figures 4 and 7, in another preferred embodiment of the present invention, the film spreading and liquid injection device 20 includes a first driving cylinder 21 provided at the bottom of the top plate 11, a base box 22 provided at the execution end of the first driving cylinder 21, a liquid injection ring 23 located in the base box 22, a liquid source tube 24 with one end connected to the liquid injection ring 23 and the other end passing through the base box 22 and extending to the upper part of the base box 22, a plurality of liquid injection tubes 25 with one end connected to the bottom of the liquid injection ring 23 and the other end connected to the bottom of the base box 22, and a plurality of film spreading components 26 provided in a circular array at the bottom of the inner wall of the base box 22 and the execution end passing through the bottom of the inner wall of the base box 22 and extending to the lower part of the base box 22, the film spreading component 26 includes a tube 24 provided through the base box 22, a through hole 261 at the bottom of the inner wall of the base box 22, a plurality of micro electric cylinders 262 provided at the bottom of the inner wall of the base box 22, and a toggle rod 263 provided at the execution end of the micro electric cylinder 262 and one end extending to the outside of the base box 22 through the through hole 261. The fixed-point fluid replenishment device 30 includes a second driving cylinder 31 provided at the bottom of the top plate 11, a positioning plate 32 horizontally provided at the execution end of the second driving cylinder 31, a micro motor 33 provided on the positioning plate 32 and with the execution end passing through the positioning plate 32 and extending to the lower part of the positioning plate 32, a circular mounting cover 34 provided at the execution end of the micro motor 33, a linear module 35 provided in the circular mounting cover 34, and a fluid replenishment tube 36 provided at the execution end of the linear module 35.

[0052] It should be noted that, in this preferred embodiment, when the film spreading and liquid injection device 20 is working, the execution end of the first driving cylinder 21 drives the base box 22 to descend until the bottom of the toggle rod 263 contacts the mask sheet, and the multiple micro-electric cylinders 262 are opened at the same time, and the execution end of the micro-electric cylinder 262 drives the toggle rod 263 to move, and the multiple toggle rods 263 to toggle and stretch the mask. After the stretching is completed, the liquid injection system connected to the liquid source tube 24 injects a certain amount of mask liquid into the liquid source tube 24, and the mask liquid passes through the liquid source tube 24, the liquid injection ring 23 and the liquid injection tube 25 in sequence and enters the mask placement box 53;

[0053] When the fixed-point fluid replenishment device 30 is working, the executive end of the second driving cylinder 31 drives the positioning plate 32 to descend to the designated position, and the executive end of the micro motor 33 drives the circular mounting cover 34 to rotate to rotate the linear module 35. The linear module 35 drives the fluid replenishment tube 36 to move linearly. The micro motor 33 and the linear module 35 work together to move the fluid replenishment tube 36 to the designated position. At this time, the injection system connected to the fluid replenishment tube 36 injects the facial mask liquid into the fluid replenishment tube 36 for secondary fluid replenishment.

[0054] The working principle of the present invention is:

[0055] The electrical components in the present invention are all triggered to operate by a PLC controller, and the model of the PLC controller is "6ES7312-5BE03-0AB0".

[0056] The circular transmission device 50 can sequentially transmit the facial mask to the film spreading and liquid injection device 20, the fixed-point liquid replenishing device 30, and the vacuum drying device 40. The station before the film spreading and liquid injection device 20 can be provided with an automatic facial mask loading device to load the facial mask sheets into the facial mask placement box 53. A packaging station can be provided after the vacuum drying device 40 to package the freeze-dried facial mask. A cleaning station can also be provided after the packaging station to clean the facial mask placement box 53.

[0057] When the circulating transmission device 50 is working, the assembly line conveyor belt 51 drives the multiple positioning racks 52 to move, and the positioning racks 52 drive the facial mask placement box 53 to move, so as to move the facial mask placement box 53 to each processing station. When the facial mask placement box 53 reaches the bottom of the film spreading and liquid injection device 20, the film spreading and liquid injection device 20 stretches the facial mask in the facial mask placement box 53 and adds facial mask liquid to prevent the facial mask wrinkles from affecting the effect of the facial mask absorbing the facial mask liquid. At this time, the top component 55 on the facial mask lifts up the facial mask to facilitate the facial mask sheet to absorb the facial mask liquid. The refrigeration component 54 is turned on to freeze the facial mask sheet that has absorbed the facial mask liquid.

[0058] When the mask placement box 53 reaches the bottom of the fixed-point rehydration device 30, the fixed-point rehydration device 30 performs secondary rehydration at the set rehydration position on the mask sheet, and the mask liquid after rehydration is directly frozen under the action of the refrigeration component 54;

[0059] When the mask placement box 53 reaches the bottom of the vacuum drying device 40, the second electromagnetic ring 531 on the side wall of the mask placement box 53 is powered off, and the vacuum drying device 40 magnetically sucks the mask placement box 53 out of the positioning frame 52 to freeze-dry the frozen mask sheets in the mask placement box 53. At the same time, the mask placement box 53 containing the freeze-dried mask sheets is placed in the positioning frame 52. The funnel-shaped bottom of the mask placement box 53 facilitates the placement of the mask placement box 53 in the positioning frame 52. The second electromagnetic ring 531 electromagnetically attracts the positioning frame 52 to complete the fixation.

[0060] The conveyor belt 51 of the assembly line is composed of two rotating wheels, a conveyor belt and a motor. The motor drives one of the rotating wheels to rotate, the rotating wheel drives the conveyor belt to move, and the conveyor belt drives the positioning frame 52 to circulate.

[0061] When the refrigeration component 54 is working, the semiconductor refrigeration ring 541 is turned on, and multiple semiconductor refrigeration rings 541 work simultaneously to reduce the temperature. The multiple semiconductor refrigeration rings 541 are radially distributed, which has a good and uniform cooling effect;

[0062] When the mask top component 55 is working, the actuator end of the micro-power cylinder 553 can drive the lifting plate 552 to move up and down, and the lifting plate 552 drives the top column 554 to move up and down. The micro-power cylinder 553 can be an electric cylinder. The mask placement box 53 can be provided with an energy storage module that supplies power to the electric cylinder. The positioning frame 52 can be provided with a wireless charging module to wirelessly charge the energy storage module.

[0063] When the vacuum drying device 40 is working, the execution end of the telescopic cylinder 43 drives the freeze-drying cover 44 to descend. When the freeze-drying cover 44 covers the outside of the mask placement box 53, the magnetic sealing component 46 magnetically fixes the mask placement box 53, and the telescopic cylinder 43 returns to its original position. At this time, the vacuum component 47 performs vacuum suction on the mask placement box 53 and the freeze-drying cover 44. The auxiliary heating component 45 provides heat at a set time to assist the sublimation of ice into gaseous water. The stepping motor 42 can drive the turntable 41 to rotate, thereby driving the multiple freeze-drying covers 44 to adjust their positions, so that the vacuum drying device 40 can accept and release the mask placement box 53;

[0064] When the magnetic sealing component 46 is working, the first electromagnetic ring 461 electromagnetically attracts the outer wall of the mask placement box 53, and at the same time, the first electromagnetic ring 461 generates an attractive force on the iron sheet 463, which squeezes the elastic sealing ring 462, so that the elastic sealing ring 462 can better seal the gap between the freeze-drying cover 44 and the mask placement box 53;

[0065] When the auxiliary heating component 45 is working, the circular heating plate 452 and the heating ring 453 are energized to generate heat;

[0066] When the vacuum component 47 is working, the suction pipe 474 can be connected to the negative pressure system, the electric control valve 475 is opened, and the air is extracted in sequence through the folding tube 476, the electric control valve 475, the air extraction ring 471, the air extraction pipe 472, the air extraction port 473, and the suction pipe 474;

[0067] When the film spreading and liquid injection device 20 is working, the actuator end of the first driving cylinder 21 drives the base box 22 to descend until the bottom of the toggle rod 263 contacts the mask sheet. The multiple micro-electric cylinders 262 are opened at the same time, and the actuator ends of the micro-electric cylinders 262 drive the toggle rod 263 to move. The multiple toggle rods 263 toggle and stretch the mask. After the stretching is completed, the injection system connected to the liquid source tube 24 injects a certain amount of mask liquid into the liquid source tube 24. The mask liquid passes through the liquid source tube 24, the injection ring 23 and the injection tube 25 in sequence and enters the mask placement box 53.

[0068] When the fixed-point fluid replenishment device 30 is working, the executive end of the second driving cylinder 31 drives the positioning plate 32 to descend to the designated position, and the executive end of the micro motor 33 drives the circular mounting cover 34 to rotate to rotate the linear module 35. The linear module 35 drives the fluid replenishment tube 36 to move linearly. The micro motor 33 and the linear module 35 work together to move the fluid replenishment tube 36 to the designated position. At this time, the injection system connected to the fluid replenishment tube 36 injects the facial mask liquid into the fluid replenishment tube 36 for secondary fluid replenishment.

[0069] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A freeze-drying device for preparing a freeze-dried facial mask, comprising a base plate (10), and a top plate (11) whose bottom is connected to the upper surface of the base plate (10) via a plurality of support columns, characterized in that: The bottom of the top plate (11) is provided with a film spreading and liquid injection device (20), a fixed-point liquid replenishing device (30), and a vacuum drying device (40) in sequence, and the base plate (10) is provided with a circulating transmission device (50), and the circulating transmission device (50) is used to transmit the facial mask to the film spreading and liquid injection device (20), the fixed-point liquid replenishing device (30), and the vacuum drying device (40) in sequence; The circulating transmission device (50) includes an assembly line conveyor belt (51) provided on a base plate (10), a plurality of positioning frames (52) provided on the side walls of the assembly line conveyor belt (51), a facial mask placement box (53) located in the positioning frames (52), a refrigeration component (54) embedded in the facial mask placement box (53), and a facial mask top component (55) embedded in the facial mask placement box (53) with an execution end passing through the refrigeration component (54) and extending to the upper surface of the facial mask placement box (53); The vacuum drying device (40) includes a turntable (41) located at the lower part of the top plate (11), a stepping motor (42) provided on the top plate (11) and used to drive the turntable (41) to rotate, a plurality of telescopic cylinders (43) provided in a circular array on the turntable (41) and with the execution ends passing through the turntable (41), a freeze-drying cover (44) provided at the execution ends of the telescopic cylinders (43), an auxiliary heating component (45) and a magnetic sealing component (46) provided on the inner wall of the freeze-drying cover (44) in sequence from top to bottom, and a vacuum component (47) provided at the bottom of the turntable (41) and with the exhaust end connected to the plurality of freeze-drying covers (44).

2. A freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The magnetic sealing component (46) includes a first electromagnetic ring (461) provided on the inner wall of the freeze-drying cover (44), an elastic sealing ring (462) provided on the top of the first electromagnetic ring (461), and a plurality of iron sheets (463) provided in an annular array on the top of the elastic sealing ring (462).

3. A freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The auxiliary heating component (45) includes a cross plate (451) provided on the inner wall of the freeze-drying cover (44), a circular heating plate (452) provided at the center of the cross plate (451), and a heating ring (453) provided on the cross plate (451) and sleeved on the outside of the circular heating plate (452).

4. A freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The vacuum component (47) includes an exhaust ring (471) provided at the bottom of the turntable (41), an exhaust pipe (472) provided at the bottom of the turntable (41) and connected to the exhaust ring (471) at both ends, an exhaust port (473) provided at the bottom of the exhaust pipe (472), an exhaust pipe (474) rotatably connected to the exhaust port (473) at one end, an annular array of electrically controlled valves (475) provided at the bottom of the exhaust ring (471) and connected to the exhaust ring (471), and a folding tube (476) having one end connected to the electrically controlled valve (475) and the other end connected to the freeze-drying cover (44).

5. A freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The film spreading and liquid injection device (20) includes a first driving cylinder (21) arranged at the bottom of the top plate (11), a base box (22) arranged at the execution end of the first driving cylinder (21), a liquid injection ring (23) located in the base box (22), a liquid source tube (24) having one end connected to the liquid injection ring (23) and the other end passing through the base box (22) and extending to the upper part of the base box (22), a plurality of liquid injection tubes (25) having one end connected to the bottom of the liquid injection ring (23) and the other end connected to the bottom of the base box (22), and a plurality of film spreading components (26) arranged in a ring array at the bottom of the inner wall of the base box (22) and the execution end passing through the bottom of the inner wall of the base box (22) and extending to the lower part of the base box (22).

6. A freeze-drying device for preparing a freeze-dried facial mask according to claim 5, characterized in that: The film-unfolding component (26) comprises a through hole (261) passing through the bottom of the inner wall of the base box (22), a plurality of micro electric cylinders (262) arranged at the bottom of the inner wall of the base box (22), and a toggle rod (263) arranged at the execution end of the micro electric cylinder (262) and one end of which extends to the outside of the base box (22) through the through hole (261).

7. The freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The fixed-point fluid replenishment device (30) includes a second driving cylinder (31) arranged at the bottom of the top plate (11), a positioning plate (32) horizontally arranged at the execution end of the second driving cylinder (31), a micro motor (33) arranged on the positioning plate (32) and having an execution end passing through the positioning plate (32) and extending to the lower part of the positioning plate (32), a circular mounting cover (34) arranged at the execution end of the micro motor (33), a linear module (35) arranged in the circular mounting cover (34), and a fluid replenishment tube (36) arranged at the execution end of the linear module (35).

8. The freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The refrigeration component (54) comprises a plurality of semiconductor refrigeration rings (541) embedded in the facial mask placement box (53), and the plurality of semiconductor refrigeration rings (541) are distributed radially.

9. A freeze-drying device for preparing a freeze-dried facial mask according to claim 8, characterized in that: The mask top component (55) includes a lifting chamber (551) embedded in the mask placement box (53) and located below the semiconductor refrigeration ring (541), a lifting plate (552) disposed in the lifting chamber (551), a micro-power cylinder (553) embedded in the mask placement box (53) and used to drive the lifting plate (552) to move up and down, and a plurality of top columns (554) disposed on the upper surface of the lifting plate (552) and with the top extending to the upper surface of the mask placement box (53).

10. The freeze-drying device for preparing a freeze-dried facial mask according to claim 1, characterized in that: The bottom of the facial mask placement box (53) is funnel-shaped, and the side wall of the facial mask placement box (53) is sleeved with a second electromagnetic ring (531).

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