Dressing preparation equipment

Abstract

The utility model discloses dressing preparation equipment, and relates to the technical field of dressing production, the dressing comprises a base material and a dressing part arranged on the base material, the dressing preparation equipment comprises a rack and a plurality of spraying devices, and a spraying station is formed on the rack; each material spraying device comprises a spraying head movably arranged relative to the rack and a material spraying driving part in driving connection with the spraying head, the material spraying driving part is used for driving the spraying head to move, and the spraying heads are used for spraying the base material when the base material is located at the material spraying station. And dressings made of the same or different materials are sprayed to the base material according to the preset paths, and the dressing part is formed. According to the technical scheme, the same or different dressings can be sprayed according to requirements, the formed dressing parts can have different or same materials and shapes, and the requirements of different wounds for material performance are met.

Description

Technical Field

[0001] The utility model relates to the technical field of dressing production, in particular to a dressing preparation device. Background Art

[0002] Currently, dressings are generally prepared by spraying and pressing, with a single material and shape. The wound surface and non-wound surface have different material performance requirements. The wound surface requires properties such as moisture retention and fluid absorption, while the non-wound surface is used to fix the dressing. Some wound surfaces are irregular due to sutures and other reasons, and the existing preparation equipment is difficult to meet the needs of different wound surfaces. Utility Model Content

[0003] The main purpose of the utility model is to provide a dressing preparation device, aiming to solve the problem that the existing preparation devices have single materials and single shapes and are difficult to meet the needs of different wound surfaces.

[0004] To achieve the above-mentioned purpose, the utility model provides a dressing preparation device, wherein the dressing includes a base material and a dressing portion arranged on the base material, and the dressing preparation device includes:

[0005] A frame, wherein a material spraying station is formed on the frame; and

[0006] A plurality of spraying devices, each of which comprises a spray head movably arranged relative to the frame, and a spray driving member drivingly connected to the spray head, wherein the spray driving member is used to drive the spray head to move, and each of the spray heads is used to spray dressings of the same or different materials on the substrate according to preset paths when the substrate is in the spraying station to form the dressing portion.

[0007] In one embodiment, the dressing preparation device further comprises a conveying line extending in a transverse direction, and the conveying line can convey the substrate to the spraying station in a transverse direction;

[0008] The nozzle is located above the conveying line and can be movably arranged in the longitudinal, transverse and vertical directions relative to the frame.

[0009] In one embodiment, the spray driving component includes a three-axis linear module arranged on the frame, and the output end of the three-axis linear module is fixedly connected to the spray head to drive the spray head to move longitudinally, vertically and horizontally.

[0010] In one embodiment, the frame is further provided with a stamping station located on the conveying line, and the stamping station and the spraying station are arranged at intervals in the transverse direction;

[0011] The dressing preparation equipment also includes a stamping device arranged at the stamping station, and the stamping device includes a stamping head that can be movably arranged in the up and down directions relative to the frame, and a stamping drive component that is drivingly connected to the stamping head. The stamping drive component is used to drive the stamping head to move, so that the stamping head can stamp the dressing when the substrate after spraying is in the stamping station to form the dressing part with a specific shape.

[0012] In one embodiment, the frame is further formed with a preheating station located on the conveyor line, and the spraying station, preheating station and stamping station are sequentially spaced in the transverse direction;

[0013] The dressing preparation equipment further comprises a preheating device, which is used to preheat the dressing when the substrate is in the preheating station.

[0014] In one embodiment, the frame is further provided with a cutting station located on the conveying line, and the spraying station and the cutting station are arranged in sequence and spaced apart in the transverse direction;

[0015] The dressing preparation equipment also includes a cutting device, which includes a cutting head movably arranged relative to the frame, and a cutting drive component drivingly connected to the cutting head, and the cutting drive component is used to drive the cutting head to move so that the cutting head can cut the substrate when the substrate after spraying is in the cutting station.

[0016] In one embodiment, the frame is further provided with a visual inspection station located on the conveying line, and the material spraying station, the visual inspection station and the cutting station are sequentially spaced apart in the transverse direction;

[0017] The dressing preparation equipment also includes a visual inspection device located at the visual inspection station, and the visual inspection device is used to obtain image information of the substrate and the dressing part when the substrate after spraying is in the visual inspection station.

[0018] In one embodiment, the dressing preparation device further comprises a feeding device, wherein the feeding device comprises:

[0019] A feeding roller is rotatably mounted on the frame along an axis extending in the longitudinal direction, and the feeding roller is used to unwind the rolled substrate;

[0020] a plurality of transmission rollers, rotatably mounted on the frame along an axis extending longitudinally; and

[0021] A feeding drive is at least connected to the feeding roller to drive the feeding roller to rotate so as to feed the substrate to the conveying line.

[0022] In one embodiment, the plurality of transmission rollers include at least one tensioning roller movably disposed in an up-and-down direction relative to the frame;

[0023] The feeding drive member includes a first driving part drivingly connected to the feeding roller and a second driving part drivingly connected to the tensioning roller. The first driving part is used to drive the feeding roller to rotate, and the second driving part is used to drive the tensioning roller to move in the up and down directions.

[0024] In one embodiment, the nozzle comprises:

[0025] Discharge pipe;

[0026] A feeding pipe, connected to the discharge pipe, for providing dressing to the discharge pipe;

[0027] A nozzle is arranged at one end of the discharge pipe;

[0028] a blocking member, the blocking member being slidably disposed in the discharge pipe to have a blocking position for blocking the connection between the feed pipe and the discharge pipe, and an open position for being separated from the connection between the feed pipe and the discharge pipe; and,

[0029] A blocking driving member is drivingly connected to the blocking member to drive the blocking member to move.

[0030] In the technical solution of the utility model, a plurality of spray devices are provided, each of which includes a spray head movably arranged relative to the frame, and a spray drive component drivingly connected to the spray head, and the spray drive component is used to drive the spray head to move; in this way, when the substrate arrives at the spray station, each of the spray heads is driven to move by the spray drive components, and each of the spray heads sprays according to a preset path, and can spray the same or different dressings as required, and the formed dressing part can have different or the same materials and shapes to meet the requirements of different wound surfaces for material performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a dressing preparation device provided by the utility model;

[0033] Figure 2 for Figure 1A partial enlarged view of the middle A;

[0034] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle nozzle;

[0035] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0036] Figure 5 for Figure 1 A partial enlarged view of point C in the middle.

[0037] Description of Figure Numbers:

[0038] 100. Dressing preparation equipment; 1. Frame; 11. Spraying station; 12. Punching station; 13. Preheating station; 14. Cutting station; 2. Spraying device; 21. Nozzle; 211. Discharge pipe; 212. Feed pipe; 213. Nozzle; 214. Blocking part; 215. Blocking drive part; 22. Spraying drive part; 3. Conveyor line; 4. Punching device; 41. Punching head; 42. Punching drive part; 5. Preheating device; 6. Cutting device; 7. Feeding device; 71. Feeding roller; 72. Drive roller; 721. Tensioning roller.

[0039] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] Currently, dressings are generally prepared by spraying and pressing, with a single material and shape. The wound surface and non-wound surface have different material performance requirements. The wound surface requires properties such as moisture retention and fluid absorption, while the non-wound surface is used to fix the dressing. Some wound surfaces are irregular due to sutures and other reasons, and the existing preparation equipment is difficult to meet the needs of different wound surfaces.

[0044] The utility model provides a dressing preparation device, aiming to solve the problem that the existing preparation devices have single materials and single shapes and are difficult to meet the needs of different wound surfaces.

[0045] See also Figure 1 and Figure 2 In one embodiment of the utility model, a dressing preparation device 100, the dressing includes a substrate and a dressing portion arranged on the substrate, the dressing preparation device 100 includes a frame 1 and a plurality of spraying devices 2, and a spraying station 11 is formed on the frame 1; each of the spraying devices 2 includes a spray head 21 movably arranged relative to the frame 1, and a spray driving member 22 drivingly connected to the spray head 21, the spray driving member 22 is used to drive the spray head 21 to move, and each of the spray heads 21 is used to spray dressings of the same or different materials on the substrate according to each preset path when the substrate is in the spraying station 11, so as to form the dressing portion.

[0046] In the technical solution of the present invention, a plurality of spray devices 2 are provided, each of the spray devices 2 comprises a spray head 21 movably arranged relative to the frame 1, and a spray driving member 22 drivingly connected to the spray head 21, the spray driving member 22 is used to drive the spray head 21 to move; in this way, when the substrate arrives at the spray station 11, each of the spray driving members 22 drives each of the spray heads 21 to move, each of the spray heads 21 sprays according to a preset path, and can spray the same or different dressings as required, and the formed dressing part can have different or the same materials and shapes to meet the requirements of different wound surfaces for material performance.

[0047] In order to realize the automation of dressing preparation, the dressing preparation equipment 100 also includes a conveyor line 3 extending in the transverse direction, and the conveyor line 3 can convey the substrate to the spraying station 11 in the transverse direction; the spray head 21 is located above the conveyor line 3, and can be movably arranged in the longitudinal, transverse and vertical directions relative to the frame 1. In this way, the substrate can be continuously conveyed by the conveyor line 3, and then the spraying drive 22 drives each spray head 21 to spray the dressing on the substrate according to a preset path, so that the dressing part can be continuously produced.

[0048] The present design does not limit the specific form of the conveyor line 3. For example, the conveyor line 3 may be a conveyor roller, a conveyor belt, or a conveyor chain, as long as it can convey the substrate.

[0049] See also Figure 1 and Figure 5 In the embodiment of the utility model, the dressing preparation device 100 further includes a feeding device 7, the feeding device 7 includes a feeding roller 71, a transmission roller 72 and a feeding drive, the feeding roller 71 is rotatably mounted on the frame 1 along an axis extending in the longitudinal direction, and the feeding roller 71 is used to unwind the rolled substrate; the transmission roller 72 is rotatably mounted on the frame 1 along an axis extending in the longitudinal direction, and a plurality of the transmission rollers are provided; the feeding drive is at least connected to the feeding roller 71 to drive the feeding roller 71 to rotate, so as to feed the substrate to the conveyor line 3. With such a configuration, the substrate can be automatically fed through the action of the feeding roller and the transmission roller, thereby realizing the automation of production and preparation.

[0050] In order to ensure the stability of the substrate during loading, in the embodiment of the utility model, the multiple transmission rollers 72 include at least one tensioning roller 721 that can be movably arranged in the up-down direction relative to the frame 1; the loading drive member includes a first driving part that is drivingly connected to the loading roller 71, and a second driving part that is drivingly connected to the tensioning roller 721, the first driving part is used to drive the loading roller 71 to rotate, and the second driving part is used to drive the tensioning roller 721 to move in the up-down direction. In this way, after the substrate is wound around the multiple transmission rollers 72 and the tensioning roller 721, the tensioning roller 721 can be driven up and down by the second driving part, thereby changing the tension of the substrate and ensuring the stability of its transportation.

[0051] The first driving unit includes but is not limited to a motor, and the motor can directly drive the loading roller 71 to rotate to unwind the substrate, and can also include other transmission components such as gears and chains.

[0052] The present design does not limit the specific form of the second driving part. For example, the second driving part can be a cylinder, an oil cylinder, or a motor and a threaded substructure, as long as it can drive the tensioning roller 721 to move in the up and down directions.

[0053] The spray drive member 22 has various forms. Figure 2 In an embodiment of the utility model, the spray drive 22 includes a three-axis linear module arranged on the frame 1, and the output end of the three-axis linear module is fixedly connected to the spray head 21 to drive the spray head 21 to move in the longitudinal, vertical and horizontal directions; in this way, the three-axis linear module can drive the spray head 21 to move in three dimensions, so that the spray head 21 can plan the preset path according to the shape and thickness of the required dressing part, and then spray the dressing according to the preset path to obtain the required dressing part. In another embodiment, the spray drive 22 can be a three-axis manipulator, as long as it can drive the spray head 21 to move in the longitudinal, vertical and horizontal directions.

[0054] The dressing preparation device 100 further includes a plurality of supply boxes, the number of which corresponds to the number of the nozzles 21 , and the supply boxes are provided with supply pumps for providing materials to the nozzles 21 .

[0055] It is understandable that in order to accommodate more dressings, the feed box is usually larger, which makes it difficult to install it directly on the frame 1, so that the distance between the nozzle 21 and the feed box is far. Although the continuous production of the dressing parts can be achieved through the conveying line 3, there is a certain interval between the two dressing parts, which will cause a certain spraying gap of the nozzle 21. If the feed pump is repeatedly turned on and off during the production process, it will cause the feed to the nozzle 21 to be slow and the feed pump to be easily damaged; please refer to Figure 2 and Figure 3 In an embodiment of the utility model, the nozzle 21 includes a discharge pipe 211, a feed pipe 212, a nozzle 213, a blocking member 214 and a blocking drive member 215. The feed pipe 212 is connected to the discharge pipe 211 to provide dressing to the discharge pipe 211, and the feed pipe 212 is connected to the supply box; the nozzle 213 is arranged at one end of the discharge pipe 211; the blocking member 214 is slidably arranged in the discharge pipe 211 to have a blocking position for blocking the connection between the feed pipe 212 and the discharge pipe 211, and an open position separated from the connection between the feed pipe 212 and the discharge pipe 211; the blocking drive member 215 is drivingly connected to the blocking member 214 to drive the blocking member 214 to move. With such an arrangement, during production, the feed pump is continuously started to feed the feed pipe 212. During the spraying gap, the blocking member 214 is driven to move to the blocking position by the blocking drive member 215, so that the dressing will not be sprayed out from the nozzle 21, and the feed pipe 212 will be filled with the dressing. When the spraying process is required, the blocking member 214 is driven to move to the open position by the blocking drive member 215, and the dressing can enter the discharge pipe 211 from the feed pipe 212, thereby being quickly sprayed out from the nozzle 213, reducing the spraying gap, greatly improving the production efficiency, and the reduction in the spraying gap will not cause excessive pressure in the feed pipe 212.

[0056] Among them, this design does not limit the specific form of the blocking drive member 215, and the blocking drive member 215 can be a cylinder, an electric push rod, etc.

[0057] It is understandable that some dressings need to be stamped during preparation, such as hydrocolloid dressings, while some dressings do not need to be stamped during preparation, such as hydrogel dressings. In order to improve the applicability of the dressing preparation device 100, please refer to Figure 1 and Figure 4In an embodiment of the utility model, a stamping station 12 located on the conveyor line 3 is also formed on the frame 1, and the stamping station 12 and the spraying station 11 are spaced apart in the horizontal direction; the dressing preparation equipment 100 also includes a stamping device 4 arranged at the stamping station 12, and the stamping device 4 includes a stamping head 41 that can be movably arranged in the up and down directions relative to the frame 1, and a stamping driving member 42 drivingly connected to the stamping head 41, and the stamping driving member 42 is used to drive the stamping head 41 to move, so that the stamping head 41 can stamp the dressing when the substrate after spraying is in the stamping station 12 to form the dressing part of a specific shape. In this way, after the substrate passes through the spraying station 11, the substrate is conveyed to the stamping station 12 by the conveyor line 3, and can be rotated for stamping or not according to needs. When stamping is required, the stamping head 41 is driven by the stamping drive 42 to move, and then the dressing on the substrate is stamped, so as to form the dressing part of the required shape.

[0058] The punching head 41 and the punching driving member 42 are detachably arranged, and different punching heads 41 can be replaced according to needs to increase the application range of the equipment.

[0059] The present design does not limit the specific form of the stamping drive member 42. For example, the stamping drive member 42 may be an oil cylinder, an air cylinder, or a threaded substructure, as long as it can drive the stamping head 41 to move in the up and down directions.

[0060] In order to prevent the dressing part from being too hardened after reaching the spraying station 11 and causing damage to the punching head 41 during punching, please refer to Figure 1 and Figure 4 In the embodiment of the utility model, the frame 1 is further formed with a preheating station 13 located on the conveyor line 3, and the spraying station 11, the preheating station 13 and the stamping station 12 are sequentially arranged in a spaced relationship in the transverse direction; the dressing preparation equipment 100 also includes a preheating device 5, which is used to preheat the dressing when the substrate is in the preheating station 13. In this way, after the substrate passes through the spraying station 11, before reaching the stamping station 12, the dressing part is preheated and softened by the preheating device 5 of the preheating station 13, which is convenient for subsequent stamping and forming.

[0061] There are many specific preheating methods for the preheating device 5, such as heat radiation heating or hot air heating. Of course, in the embodiment of the utility model, heat radiation heating is preferred. Compared with hot air heating, heat radiation heating will not blow the dressing after the dressing part softens, which is convenient for subsequent stamping and forming.

[0062] To cut the formed dressing portion, refer to Figure 1 In an embodiment of the utility model, a cutting station 14 located on the conveying line 3 is also formed on the frame 1, and the spraying station 11 and the cutting station 14 are arranged in sequence and spaced apart in the lateral direction; the dressing preparation equipment 100 also includes a cutting device 6, and the cutting device 6 includes a cutting head movably arranged relative to the frame 1, and a cutting drive connected to the cutting head, and the cutting drive is used to drive the cutting head to move, so that the cutting head can cut the substrate when the substrate after spraying is in the cutting station 14.

[0063] It should be noted that the cutting station 14 can be arranged after the spraying station 11 or after the stamping station 12. In order to improve the applicability of the equipment, the cutting station 14 is arranged after the stamping station 12, that is, the spraying station 11, the preheating station 13, the stamping station 12 and the cutting station 14 are arranged sequentially in the horizontal direction.

[0064] In order to prevent the substrate from being offset during the conveying process of the conveyor line 3, which causes the finished product cut by the cutting head to deviate from the expected one, in an embodiment of the utility model, the frame 1 is also formed with a visual inspection station located on the conveyor line 3, and the spraying station 11, the visual inspection station and the cutting station 14 are arranged in sequence in the horizontal direction; the dressing preparation equipment 100 also includes a visual inspection device located at the visual inspection station, and the visual inspection device is used to obtain image information of the substrate and the dressing part when the substrate after spraying is in the visual inspection station. Before the substrate is cut by the cutting head, the image information of the substrate and the dressing part is obtained by the visual inspection device, and then the cutting drive is controlled to work according to the image information and the preset product information, so as to ensure that the finished products cut by the cutting head are consistent and reduce the probability of defective products.

[0065] The visual detection device can be a CMOS or a CCD.

[0066] It is understandable that the dressing is usually covered with a release film or release paper on the dressing portion to prevent the dressing portion from being contaminated. Therefore, in an embodiment of the present invention, the dressing preparation equipment 100 also includes a laminating device for covering the substrate and the dressing portion with a release film or release paper before cutting.

[0067] Of course, the waste material of the substrate can be rolled up after cutting to keep the production environment clean. Therefore, in this embodiment, the dressing preparation equipment 100 also includes a rolling device, which includes a rolling roller rotatable along an axis extending longitudinally relative to the base to roll up the substrate.

[0068] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dressing preparation device, characterized in that: The dressing comprises a base material and a dressing portion arranged on the base material, and the dressing preparation device comprises: A frame, wherein a material spraying station is formed on the frame; and A plurality of spraying devices, each of which comprises a spray head movably arranged relative to the frame, and a spray driving member drivingly connected to the spray head, wherein the spray driving member is used to drive the spray head to move, and each of the spray heads is used to spray dressings of the same or different materials on the substrate according to preset paths when the substrate is in the spraying station to form the dressing portion.

2. The dressing preparation device according to claim 1, characterized in that: The dressing preparation equipment further comprises a conveying line extending in a transverse direction, and the conveying line can convey the substrate to the spraying station in a transverse direction; The nozzle is located above the conveying line and can be movably arranged in the longitudinal, transverse and vertical directions relative to the frame.

3. The dressing preparation device according to claim 2, characterized in that: The spray driving component includes a three-axis linear module arranged on the frame, and the output end of the three-axis linear module is fixedly connected to the spray head to drive the spray head to move longitudinally, vertically and horizontally.

4. The dressing preparation device according to claim 2, characterized in that: The frame is also provided with a stamping station located on the conveying line, and the stamping station and the spraying station are arranged at intervals in the horizontal direction; The dressing preparation equipment also includes a stamping device arranged at the stamping station, and the stamping device includes a stamping head that can be movably arranged in the up and down directions relative to the frame, and a stamping drive component that is drivingly connected to the stamping head. The stamping drive component is used to drive the stamping head to move, so that the stamping head can stamp the dressing when the substrate after spraying is in the stamping station to form the dressing part.

5. The dressing preparation device according to claim 3, characterized in that: The frame is also provided with a preheating station located on the conveying line, and the spraying station, the preheating station and the stamping station are arranged in sequence and at intervals in the transverse direction; The dressing preparation equipment further comprises a preheating device, which is used to preheat the dressing when the substrate is in the preheating station.

6. The dressing preparation device according to claim 2, characterized in that: The frame is also provided with a cutting station located on the conveying line, and the spraying station and the cutting station are arranged in sequence and spaced apart in the transverse direction; The dressing preparation equipment also includes a cutting device, which includes a cutting head movably arranged relative to the frame, and a cutting drive component drivingly connected to the cutting head, and the cutting drive component is used to drive the cutting head to move so that the cutting head can cut the substrate when the substrate after spraying is in the cutting station.

7. The dressing preparation device according to claim 6, characterized in that The frame is also provided with a visual inspection station located on the conveying line, and the material spraying station, the visual inspection station and the cutting station are sequentially arranged at intervals in the transverse direction; The dressing preparation equipment also includes a visual inspection device located at the visual inspection station, and the visual inspection device is used to obtain image information of the substrate and the dressing part when the substrate after spraying is in the visual inspection station.

8. The dressing preparation device according to claim 2, characterized in that: The dressing preparation device further includes a feeding device, which includes: A feeding roller is rotatably mounted on the frame along an axis extending in the longitudinal direction, and the feeding roller is used to unwind the rolled substrate; a plurality of transmission rollers, rotatably mounted on the frame along an axis extending longitudinally; and A feeding drive is at least connected to the feeding roller to drive the feeding roller to rotate so as to feed the substrate to the conveying line.

9. The dressing preparation device according to claim 8, characterized in that The plurality of transmission rollers include at least one tensioning roller movably arranged in an up-and-down direction relative to the frame; The feeding drive member includes a first driving part drivingly connected to the feeding roller and a second driving part drivingly connected to the tensioning roller. The first driving part is used to drive the feeding roller to rotate, and the second driving part is used to drive the tensioning roller to move in the up and down directions.

10. The dressing preparation device according to any one of claims 1 to 9, characterized in that The nozzle comprises: Discharge pipe; A feeding pipe, connected to the discharge pipe, for providing dressing to the discharge pipe; A nozzle is arranged at one end of the discharge pipe; a blocking member, the blocking member being slidably disposed in the discharge pipe to have a blocking position for blocking the connection between the feed pipe and the discharge pipe, and an open position for being separated from the connection between the feed pipe and the discharge pipe; and, A blocking driving member is drivingly connected to the blocking member to drive the blocking member to move.

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