A device for applying hydrogel coating and indentation for producing medical patch

Abstract

The present invention discloses an external hydrogel coating and indentation device for medical patch production, which belongs to the technical field of medical patch production, and comprises an automatic conveyor belt, on which an automatic coating structure, a coating uniform structure and a coating and indentation structure are respectively mounted, and the coating uniform structure comprises a support frame, a gel thickness adjustment component and a gel scraping component, the support frame is mounted on the automatic conveyor belt, the gel thickness adjustment component is arranged on the support frame, and the gel scraping component is arranged on the support frame; the coating and indentation structure comprises a mounting frame, on which an indentation moving component is arranged, the indentation moving component and the mounting frame are slidably matched, and the indentation moving component is provided with a trace adjustment component. The present invention can adjust the spacing between two adjacent indentation rods according to the needs of hydrogel production, so as to enhance adhesion, improve air permeability, increase flexibility, and enhance aesthetics and design sense.

Description

Technical Field

[0001] The invention belongs to the technical field of medical patch production, and in particular relates to an external hydrogel coating and indentation device for medical patch production. Background Art

[0002] Medical patch is a patch product used in the medical field, usually composed of a base material, adhesive and drugs (if any). The base material of the medical patch can be non-woven fabric, cotton, plastic film, etc. Different materials have different properties, such as breathability, softness, waterproofness, etc., which can meet different clinical needs.

[0003] The existing Chinese patent with publication number CN220784101U discloses a hydrogel coating creasing machine for medical patch production, which belongs to the technical field of medical patch production, and comprises a workbench and a hydraulic module. A mounting frame is fixedly installed on the outer wall of the workbench, and a hydraulic module is arranged on the mounting frame. A connecting plate is fixedly installed on the outer wall of the hydraulic module, and a quick-release component is arranged at one end of the connecting plate. The quick-release component comprises a fixed block and a toothed bar, a gear is rotatably installed on the top surface of the fixed block, a slide groove is arranged on the top surface of the fixed block, and travel grooves are arranged at both ends of the fixed block, and the gear is meshingly connected with the toothed bar; by arranging a driving component and a quick-release component, through this design, it is effectively realized that the creasing template on the creasing machine can be quickly replaced, its operation is simplified, and it is avoided that it is difficult for non-professional staff to replace the template, which greatly reduces the labor intensity and has a good use effect.

[0004] However, during the use of the existing patent, the spacing between the indentation templates cannot be adjusted. When indenting different medical patches, the position of the indentation cannot be adjusted, resulting in reduced fit and air permeability of the medical patch and affecting the subsequent tearing of the medical patch. Summary of the invention

[0005] The embodiment of the present invention provides an external hydrogel coating and indentation device for producing a medical patch to solve the problems in the prior art.

[0006] The embodiment of the present invention adopts the following technical scheme: a device for coating and indenting an external hydrogel for producing a medical patch, comprising an automatic conveyor belt, on which an automatic coating structure, a uniform coating structure and a coating and indentation structure are respectively mounted, and the automatic conveyor belt can drive the medical patch to pass through the automatic coating structure, the uniform coating structure and the coating and indentation structure in sequence; the uniform coating structure comprises a support frame, a gel thickness adjustment component and a gel scraping component, the support frame is mounted on the automatic conveyor belt, the gel thickness adjustment component is arranged on the support frame, the gel thickness adjustment component and the support frame are slidably matched, the gel scraping component is arranged on the support frame and the gel scraping component scrapes the gel on the gel thickness adjustment component; the coating and indentation structure comprises a mounting frame, on which an indentation moving component is arranged, the indentation moving component and the mounting frame are slidably matched, the indentation moving component is provided with a trace adjustment component, and the trace adjustment component and the indentation moving component are slidably matched.

[0007] Furthermore, the gel thickness adjustment component includes a rotating roller, a rotating motor, two sliders and two adjusting electric cylinders. Two slide grooves are provided on the support frame. The two ends of the rotating roller are respectively rotatably connected to the two sliders. The rotating motor is located on the sliders and the rotating motor and the rotating roller are transmission-connected. The two sliders slide in the two slide grooves respectively. The two adjusting electric cylinders are symmetrically arranged on the top of the support frame, and the telescopic ends of the adjusting electric cylinders are connected to the top of the adjusting block.

[0008] Furthermore, the gel scraping assembly includes a driving motor and a scraping plate, the scraping plate is rotatably connected to the support frame, the scraping plate is located above the rotating roller, the driving motor is located on the support frame and the driving motor is transmission-connected to the scraping plate.

[0009] Furthermore, the scraping plate and the rotating roller are made of polyurethane material.

[0010] Furthermore, the indentation moving assembly includes a moving electric cylinder, a moving frame plate and a rotating motor, the moving frame plate is horizontally arranged on the main shaft of the rotating motor, the moving electric cylinder is located on the top of the mounting frame and the telescopic end of the moving electric cylinder is connected to the rotating motor.

[0011] Furthermore, the trace adjustment assembly includes two position adjustment parts symmetrically arranged in the movable frame plate, the position adjustment parts include an adjusting cylinder, a slide rail and a plurality of adjustment blocks, the slide rail is horizontally arranged in the movable frame plate, a plurality of adjustment blocks are equidistantly arranged on the slide rail, the adjustment blocks are slidably fitted with the slide rail, a hinged frame hinged to each other is provided between two adjacent adjustment blocks, the adjusting cylinder is horizontally arranged in the movable frame plate, the telescopic end of the adjusting cylinder is connected to one of the adjustment blocks, and a detachable indentation rod is provided on the adjustment blocks of the two position adjustment parts.

[0012] Furthermore, the adjustment block is provided with an adjustment block that slides with it, the adjustment block is provided with an adjustment tooth plate, the adjustment block is provided with an adjustment gear that meshes with the adjustment tooth plate, the adjustment gear is provided with a rotating rod, the rotating rod is rotatably connected to the adjustment block, and the adjustment block is provided with a locking screw, and the locking screw can resist and press the adjustment block.

[0013] Furthermore, a threaded hole is provided on the adjusting block, one end of the indentation rod is connected to the threaded hole by a screw, and the other end of the indentation rod is connected to the adjusting block by a screw.

[0014] Furthermore, the indentation rod is in the shape of a round rod, and the indentation rod is in the shape of a square rod.

[0015] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0016] Firstly, when the distance of the indentation rods is adjusted, the operation of the regulating cylinder will drive one of the adjustment blocks to move horizontally on the slide rail, thereby driving the other adjustment blocks to move horizontally on the slide rail through the hinged rod. During use, the two position adjustment parts work synchronously, thereby driving the position of the horizontally arranged indentation rods to move horizontally. During the process of indenting the hydrogel, the spacing and distance between the multiple indentation rods can be adjusted according to the needs of the hydrogel; the spacing between two adjacent indentation rods can be adjusted according to the needs of hydrogel production, so as to enhance adhesion, improve air permeability, increase flexibility, and enhance aesthetics and design.

[0017] Secondly, when the indentation rod of the present invention is used, it is necessary to keep the indentation rod in a horizontal state, and the position of the adjusting block needs to be adjusted and leveled. At this time, the locking screw can be loosened, and the rotating rod can be rotated to drive the adjusting gear to rotate on the adjusting tooth plate, thereby driving the adjusting block to move in the adjusting block, and the position of the indentation rod can be tightened and fixed. At this time, the locking screw is rotated to resist and press the position of the adjusting block through the rotation of the locking screw, and the position of the adjusting block will not move, so that the indentation rod is in a horizontal state, so that the hydrogel can be indented by the indentation rod later; during use, when the length of the indentation rod needs to be compensated, the rotating rod can also be rotated to drive the position of the adjusting block to move horizontally in the adjusting block, thereby moving the position of the threaded hole on the adjusting block to the indentation rod for the installation of the indentation rod.

[0018] Thirdly, after the hydrogel is coated, the present invention rotates the motor to drive the rotating roller to rotate on the two sliders, so that the hydrogel can be evenly distributed and adhered to the medical patch. When producing different batches and different types of medical patches, hydrogels of different thicknesses need to be coated. At this time, the two adjusting electric cylinders can work simultaneously to drive the two sliders to move up and down in the two slide grooves respectively, so as to drive the position of the rotating roller to move up and down. The interval between the rotating roller and the automatic conveyor belt can be adjusted according to the required thickness of the hydrogel, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 A top view of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the uniformly coated structure in the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the gel thickness adjustment component and the gel scraping component in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the indentation moving component in the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the coating indentation structure in the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the trace adjustment component in the present invention;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the position adjustment member in the present invention;

[0028] Fig. 9 The structure of the indentation rod in the present invention is shown in FIG. Figure 1 ;

[0029] Fig.10 The structure of the indentation rod in the present invention is shown in FIG. Figure 2 ;

[0030] Reference numerals

[0031] Automatic conveyor belt 1, automatic coating structure 2, uniform coating structure 3, support frame 31, slide trough 310, gel thickness adjustment component 32, rotating roller 321, rotating motor 322, slider 323, adjusting electric cylinder 324, gel scraping component 33, driving motor 331, scraping plate 332, coating indentation structure 4, mounting frame 41, indentation moving component 42, moving electric cylinder 421, moving frame plate 422, rotating motor 423, trace adjustment component 43, position adjustment part 430, adjusting cylinder 431, slide rail 432, adjusting block 433, articulated frame 434, indentation rod 44, adjusting block 451, adjusting tooth plate 452, adjusting gear 453, rotating rod 454, locking screw 455, threaded hole 456. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] Reference Figures 1 to 10 As shown, an embodiment of the present invention provides an external hydrogel coating and indentation device for producing a medical patch, comprising an automatic conveyor belt 1, on which an automatic coating structure 2, a coating uniform structure 3 and a coating indentation structure 4 are respectively mounted, and the automatic conveyor belt 1 can drive the medical patch to pass through the automatic coating structure 2, the coating uniform structure 3 and the coating indentation structure 4 in sequence; The coating uniform structure 3 includes a support frame 31, a gel thickness adjustment component 32 and a gel scraping component 33, wherein the support frame 31 is mounted on the automatic conveyor belt 1, the gel thickness adjustment component 32 is arranged on the support frame 31, the gel thickness adjustment component 32 and the support frame 31 are slidably matched, the gel scraping component 33 is arranged on the support frame 31 and the gel scraping component 33 scrapes the gel on the gel thickness adjustment component 32; the coating indentation structure 4 includes a mounting frame 41, the mounting frame 41 is provided with an indentation moving component 42, the indentation moving component 42 and the mounting frame 41 are slidably matched, the indentation moving component 42 is provided with a trace adjustment component 43, the trace adjustment component 43 and the indentation moving component 42 are slidably matched

[0035] In this embodiment, the gel thickness adjustment component 32 includes a rotating roller 321, a rotating motor 322, two sliders 323 and two adjusting electric cylinders 324. Two slide grooves 310 are provided on the support frame 31. The two ends of the rotating roller 321 are respectively rotatably connected to the two sliders 323. The rotating motor 322 is located on the sliders 323 and the rotating motor 322 is transmission-connected to the rotating roller 321. The two sliders 323 slide in the two slide grooves 310 respectively. The two adjusting electric cylinders 324 are symmetrically arranged on the top of the support frame 31. The telescopic ends of the adjusting electric cylinders 324 are connected to the top of the adjustment block 451.

[0036] After the hydrogel is applied, the rotating motor 322 drives the rotating roller 321 to rotate on the two sliders 323, so that the hydrogel can be evenly distributed and adhered to the medical patch. When producing different batches and different types of medical patches, hydrogels of different thicknesses need to be applied. At this time, the two adjusting electric cylinders 324 can work simultaneously to drive the two sliders 323 to move up and down in the two slide grooves 310 respectively, and the position of the rotating roller 321 can be driven to move up and down. The distance between the rotating roller 321 and the automatic conveyor belt 1 can be adjusted according to the required thickness of the hydrogel, thereby improving the applicability of the device.

[0037] In this embodiment, the gel scraping assembly 33 includes a driving motor 331 and a scraping plate 332. The scraping plate 332 is rotatably connected to the support frame 31. The scraping plate 332 is located above the rotating roller 321. The driving motor 331 is located on the support frame 31 and the driving motor 331 is transmission-connected to the scraping plate 332.

[0038] After a period of time, when the thickness of the hydrogel is adjusted, or when the thickness of the hydrogel of the same batch of medical patches is adjusted, a large amount of hydrogel will adhere to the rotating roller 321, which needs to be processed. At this time, the driving motor 331 will drive the scraper plate 332 to rotate, so that the scraper plate 332 is in contact with the rotating roller 321. During the rotation of the rotating roller 321, the scraper plate 332 will scrape the adhered hydrogel. If the rotating roller 321 is adhered with hydrogel, it will cause uneven coating of the hydrogel on the subsequent products. Scraping the hydrogel on the rotating roller 321 can ensure that the thickness and uniformity of each coating are consistent, thereby improving the quality stability of the product; the adhered hydrogel may absorb dust and impurities in the air, and these impurities may be mixed into the product in the subsequent production process, affecting the purity and performance of the product. Scraping the hydrogel can reduce this risk.

[0039] In this embodiment, the scraping plate 332 and the rotating roller 321 are made of polyurethane material at the glue scraping point. Long service life: polyurethane has excellent wear resistance and can withstand long-term friction without being easily worn when scraping glue on the rotating roller 321. This greatly extends the service life of the scraping plate 332 and reduces the cost and workload of frequently replacing the scraping plate 332. Maintaining the scraping effect: even after long-term use, the polyurethane scraping plate 332 can still maintain a good scraping effect. Its surface will not become rough due to wear, thereby ensuring that the glue can be effectively scraped off and the rotating roller 321 can be kept clean.

[0040] In this embodiment, the indentation moving assembly 42 includes a moving electric cylinder 421, a moving frame plate 422 and a rotating motor 423. The moving frame plate 422 is horizontally arranged on the main shaft of the rotating motor 423. The moving electric cylinder 421 is located at the top of the mounting frame 41 and the telescopic end of the moving electric cylinder 421 is connected to the rotating motor 423.

[0041] When indenting the trace on the hydrogel, the movable electric cylinder 421 drives the movable frame plate 422 to move downward, and moves the position of the movable frame plate 422 downward to the hydrogel, and the hydrogel is indented by a plurality of indentation rods 44, and the rotating motor 423 drives the position of the movable frame plate 422 to rotate, so that the movable frame plate 422 rotates 90 degrees, and the movable frame plate 422 is driven by the movable electric cylinder 421 to move downward to the hydrogel again, so as to form a grid-shaped indentation on the hydrogel.

[0042] In this embodiment, the trace adjustment component 43 includes two position adjustment parts 430 symmetrically arranged in the movable frame plate 422, and the position adjustment part 430 includes an adjusting cylinder 431, a slide rail 432 and a plurality of adjustment blocks 433. The slide rail 432 is horizontally arranged in the movable frame plate 422, and a plurality of adjustment blocks 433 are evenly spaced on the slide rail 432. The adjustment blocks 433 are slidably fitted with the slide rail 432, and a hinged frame 434 hinged to each other is provided between two adjacent adjustment blocks 451. The adjusting cylinder 431 is horizontally arranged in the movable frame plate 422, and the telescopic end of the adjusting cylinder 431 is connected to one of the adjustment blocks 433. A detachable indentation rod 44 is provided on the adjustment blocks 433 of the two position adjustment parts 430.

[0043] When adjusting the distance of the indentation rods 44, the operation of the regulating cylinder 431 will drive one of the adjustment blocks 433 to move horizontally on the slide rail 432, thereby driving the other adjustment blocks 433 to move horizontally on the slide rail 432 through the hinged rod. During use, the two position adjustment members 430 work synchronously, thereby driving the position of the horizontally set indentation rods 44 to move horizontally. During the process of indenting the hydrogel, the spacing and distance between the multiple indentation rods 44 can be adjusted according to the needs of the hydrogel; the spacing between two adjacent indentation rods 44 can be adjusted according to the needs of hydrogel production, so as to enhance adhesion, improve air permeability, increase flexibility, and enhance aesthetics and design.

[0044] When indenting the hydrogels on the medical patches of the same batch, the distance and spacing between the two indentation rods 44 are the same.

[0045] When the position distance of the plurality of indentation rods 44 is adjusted, the grid-shaped indentation forms many tiny depressions and protrusions on the surface of the material, greatly increasing the contact area with other objects. For example, in adhesive products, the grid-shaped indentation can make the glue penetrate and adhere better, and improve the bonding strength;

[0046] The concave part of the grid can form a certain degree of mechanical interlocking with the object to be pasted, further enhancing the adhesion. This mechanical interlocking effect is similar to the meshing of gears, making the pasting more secure and not easy to fall off;

[0047] The grid-shaped indentation creates many tiny channels on the surface of the material, which is conducive to the circulation of air. The grid-shaped indentation can improve the breathability of the product, reduce the skin's stuffiness, and reduce the risk of infection.

[0048] In humid environments, the grid-shaped indentations can help to expel water vapor and prevent it from accumulating between the material and the skin. This helps keep the skin dry and improves the comfort and use of the product;

[0049] Grid-shaped indentation can disperse the stress on the material into each grid unit, reducing local stress concentration. This makes the material more flexible and less likely to break or damage when bent or stretched.

[0050] The grid-shaped indentation makes it easier for the material to adapt to irregular curved shapes. For example, when fitting to joints and other parts of the human body, the grid-shaped indentation can better fit the skin and improve the performance of the product.

[0051] It should be noted that the distances that the adjustment blocks 433 slide on the slide rail 432 are the same and fixed, and the distances that the indentation rod 44 moves each time are also the same and fixed.

[0052] In this embodiment, the adjustment block 433 is provided with an adjustment block 451 that slides with it, and the adjustment block 451 is provided with an adjustment tooth plate 452. The adjustment block 433 is provided with an adjustment gear 453 that meshes with the adjustment tooth plate 452. The adjustment gear 453 is provided with a rotating rod 454, and the rotating rod 454 is rotatably connected to the adjustment block 433. The adjustment block 433 is provided with a locking screw 455, and the locking screw 455 can resist and press the adjustment block 451.

[0053] When the indentation rod 44 is used, it is necessary to keep the indentation rod 44 in a horizontal state, so the position of the adjustment block 451 needs to be adjusted and leveled. At this time, the locking screw 455 can be loosened, and the rotating rod 454 can be rotated to drive the adjustment gear 453 to rotate on the adjustment tooth plate 452, thereby driving the adjustment block 451 to move in the adjustment block 433, and the position of the indentation rod 44 can be tightened and fixed. At this time, the locking screw 455 is rotated, and the position of the adjustment block 451 is pressed against by the rotation of the locking screw 455, and the position of the adjustment block 451 will not move, so that the indentation rod 44 is in a horizontal state, so that the hydrogel can be indented by the indentation rod 44 later;

[0054] During use, when the length of the indentation rod 44 needs to be compensated, the rotating rod 454 can also be rotated to drive the position of the adjustment block 451 to move horizontally within the adjustment block 433, thereby moving the position of the threaded hole 456 on the adjustment block 451 to the indentation rod 44 to facilitate the installation of the indentation rod 44.

[0055] In this embodiment, a threaded hole 456 is provided on the adjustment block 451, one end of the indentation rod 44 is connected to the threaded hole 456 by a screw, and the other end of the indentation rod 44 is connected to the adjustment block 433 by a screw; the indentation rod 44 is connected to the threaded hole 456 on the adjustment block 451 by a screw, and the indentation rod 44 can be quickly and conveniently replaced during use to produce different types of medical patches.

[0056] In this embodiment, the indentation rod 44 is in the shape of a round rod, and the indentation rod 44 is in the shape of a square; when indenting the hydrogel, different shapes of indentation rods 44 can be selected to meet different production needs, so that the produced medical patch has a better effect, and different types of medical patches can also be produced.

[0057] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A device for applying hydrogel to medical patches, characterized in that: The invention comprises an automatic conveyor belt (1), on which an automatic coating structure (2), a coating uniform structure (3) and a coating indentation structure (4) are respectively mounted, and the automatic conveyor belt (1) can drive the medical patch to pass through the automatic coating structure (2), the coating uniform structure (3) and the coating indentation structure (4) in sequence; The uniform coating structure (3) comprises a support frame (31), a gel thickness adjustment component (32) and a gel scraping component (33). The support frame (31) is mounted on the automatic conveyor belt (1), and the gel thickness adjustment component (32) is arranged on the support frame (31). The gel thickness adjustment component (32) and the support frame (31) are slidably matched. The gel scraping component (33) is arranged on the support frame (31) and the gel scraping component (33) scrapes the gel on the gel thickness adjusting component (32); The coating indentation structure (4) comprises a mounting frame (41), on which an indentation moving component (42) is provided, and the indentation moving component (42) is slidably matched with the mounting frame (41). The indentation moving component (42) is provided with a trace adjustment component (43), and the trace adjustment component (43) is slidably matched with the indentation moving component (42); The gel thickness adjustment component (32) comprises a rotating roller (321), a rotating motor (322), two sliders (323) and two adjustment electric cylinders (324). The support frame (31) is provided with two slide grooves (310), the two ends of the rotating roller (321) are respectively rotatably connected to two sliders (323), the rotating motor (322) is located on the slider (323) and the rotating motor (322) is transmission-connected to the rotating roller (321). The two sliding blocks (323) slide in the two sliding grooves (310) respectively, the two adjusting electric cylinders (324) are symmetrically arranged on the top of the support frame (31), and the telescopic ends of the adjusting electric cylinders (324) are connected to the top of the adjusting block (451); The gel scraping assembly (33) comprises a driving motor (331) and a scraping plate (332). The scraper plate (332) is rotatably connected to the support frame (31), and the scraper plate (332) is located above the rotating roller (321). The driving motor (331) is located on the support frame (31) and is in transmission connection with the scraping plate (332); The indentation moving assembly (42) comprises a moving electric cylinder (421), a moving frame plate (422) and a rotating motor (423). The movable frame plate (422) is horizontally arranged on the main shaft of the rotating motor (423); the movable electric cylinder (421) is located on the top of the mounting frame (41) and the telescopic end of the movable electric cylinder (421) is connected to the rotating motor (423); The trace adjustment component (43) comprises two position adjustment members (430) symmetrically arranged in the movable frame plate (422). The position adjustment member (430) comprises an adjustment cylinder (431), a slide rail (432) and a plurality of adjustment blocks (433). The slide rail (432) is horizontally arranged in the movable frame plate (422), and a plurality of adjustment blocks (433) are arranged on the slide rail (432) at equal intervals, and the adjustment blocks (433) are slidably matched with the slide rail (432). A mutually hinged hinge frame (434) is provided between two adjacent adjustment blocks (451), the adjustment cylinder (431) is horizontally arranged in the movable frame plate (422), and the telescopic end of the adjustment cylinder (431) is connected to one of the adjustment blocks (433). The adjustment blocks (433) of the two position adjustment members (430) are provided with detachable indentation rods (44); The adjusting block (433) is provided with an adjusting block (451) that is slidably matched therewith, and the adjusting block (451) is provided with an adjusting tooth plate (452). An adjusting gear (453) meshing with the adjusting toothed plate (452) is provided in the adjusting block (433), a rotating rod (454) is provided on the adjusting gear (453), and the rotating rod (454) is rotatably connected to the adjusting block (433). A locking screw (455) is disposed on the adjusting block (433), and the locking screw (455) can press against the adjusting block (451); The adjusting block (451) is provided with a threaded hole (456), one end of the indentation rod (44) is connected to the threaded hole (456) by means of a screw, and the other end of the indentation rod (44) is connected to the adjusting block (433) by means of a screw.

2. The device for applying hydrogel for external application for producing medical patch according to claim 1, characterized in that: The scraping plate (332) and the scraping part of the rotating roller (321) are made of polyurethane material.

3. The device for applying hydrogel for external application for producing medical patch according to claim 1, characterized in that: The indentation rod (44) is in the shape of a round rod, and the indentation rod (44) is in the shape of a square.

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